US20020038591A1

US20020038591A1 - Cutting device for recording medium and printer with cutting device

Info

Publication number: US20020038591A1
Application number: US09/964,504
Authority: US
Inventors: Itaru Fukushima; Satoshi Yamanushi; Yuuki Horigome
Original assignee: Individual
Current assignee: Canon Finetech Nisca Inc
Priority date: 2000-10-04
Filing date: 2001-09-28
Publication date: 2002-04-04
Also published as: JP2002114436A; US6951427B2; US20040179884A1; US20040177736A1

Abstract

A cutting device for cutting four edges out of recording media being fed, comprising: a side cutter for cutting both side edges of the recording media fed in a feed direction of the recording media; an end cutter for cutting a leading and trailing end edges out of the recording media fed in a feed direction of the recording media; and, a recording media feed path having a curve or a plurality of curves formed on at least a part thereof; wherein the side cutter is arranged on the corner or corners of the recording media feed path. The four edges of the recording media having an image or the like printed can be cut accurately and securely.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a cutting device for and a cutting method of recording media, such as photosensitive recording paper and the like having an image or the like printed, and to a printer having the cutting device. More specifically, it relates to a cutting device for and a cutting method of recording media accurately and securely and to a printer having the cutting device for continuously cutting a plurality of the recording media accurately and securely.

2. Description of the Prior Art

Prior printers make exposure on a photosensitive recording sheet before pressing it to develop, thereby forming an image on a surface of the photosensitive recording sheet. As an example, Japanese Patent Application Publication 2000-147678(A) discloses a recording apparatus as printer that: a photosensitive recording sheet called the Cycolor media is used that is formed of lamination of microcapsules filled with either one of coloring materials of cyan, magenta, and yellow each; the photosensitive recording sheet has a light of desired wavelength irradiated to a surface thereof to expose a color image; in other words, the surface is made to react to a light of specific wavelength to cure a sensitive material filled in the microcapsule together with the coloring material; the curing makes coloring reaction of the coloring material inactive; after that, a high pressure is applied to the active microcapsule without reacting to the light of specific wavelength to destroy for development (coloring), thereby forming the color image.

The prior printer mentioned above has an advantage that a running cost for printing can be kept low as consumable materials such as toner and ink or ink ribbon are not needed except for the above-mentioned Cycolor media only for forming, or printing, the color image. The above-mentioned Cycolor media is on the marked in forms as blank cut sheets, such as a rectangular form, before the printing processes (exposing and pressure-developing processes). In the cutting process to the blank forms, the Cycolor media has an undesired force applied to four edges thereof. The four edges result in destruction of the microcapsules of non-unactiviated (active) state having the coloring materials filled therein, the microcapsules being thereon. It is disadvantageous that the four edges cannot be developed to desired colors, but becomes black or undesirable results.

To overcome the problem, Japanese Patent Application Publication Hei 10-62871 (A) discloses a technique that in advance of the above-mentioned cutting step the four edges of the Cycolor media are pre-exposed to white and, the microcapsules existing on the edges are made inactive as a white frame to prevent the white edges from becoming black even if after that, a pressure is applied to the edges at the cutting step for a standard form.

However, the above-mentioned processing made on the recording media results in increased cost of the media as consumable item, or unavoidably increased running cost in the printing process with use of the media.

On the other hand, the printer having such a media used is useful as a photo-printer. The photosensitive recording paper having a color image formed, like the photograph having usual negative film used, has been needed to have the image formed on the entire surface without four edges in finish.

Various prior arts for cutting the recording media have been disclosed and put to practical use. Japanese Patent Application Publication Hei 11-202418(A), as an example, discloses a structure having a cutter unit made up of a horizontal cutter and a vertical cutter, the horizontal cutter being for cutting photosensitive material having a plurality of images printed (exposed) to specific lengths depending on lengths of individual prints formed on the photosensitive material and, the vertical cutter being for cutting the photosensitive material having the plurality of wide images printed to specific widths depending on widths of the individual prints, thereby horizontally and vertically cutting the photosensitive material for the plurality of prints. However, the structure unlike the present invention cannot only be used to cut the four edges out of the recording media, but also is not elaborated for accurate and secure cutting the photosensitive material in any way as to posture and holding state of the photosensitive material in cutting the photosensitive material.

OBJECT OF THE INVENTION

An object of the present invention is to provide a cutting device for recording media capable of cutting four edges of the recording media having an image or the like printed accurately and securely.

Another object of the present invention is to provide a cutting method of recording media capable of cutting four edges of the recording media having an image or the like printed accurately and securely.

Still another object of the present invention is to provide a printer having a cutting device for recording media capable of cutting four edges of the recording media having an image or the like printed accurately and securely to suppress a running cost while keeping quality image printed on the recording media.

SUMMARY OF THE INVENTION

Briefly, the foregoing objects are accomplished in accordance with aspects of the present invention by a cutting device for cutting four edges out of recording media being fed, comprising in combination: a side cutter for cutting both side edges of the recording media fed in a feed direction of the recording media; an end cutter for cutting a leading and trailing end edges out of the recording media fed in a feed direction of the recording media; and, a recording media feed path having a curve or a plurality of curves formed on at least a part thereof; wherein the side cutter is arranged on the corner or corners of the recording media feed path.

Also, the foregoing objects are accomplished in accordance with aspects of the present invention by a cutting method of recording media of cutting four edges out of recording media, comprising in combination: a both-side edge first-half-area cutting step of feeding the recording media to a first cutting position before cutting both-side edge first-half areas out of the recording media in a feed direction of the recording media while feeding the recording media; a both-side edge last-half-area cutting step of feeding the recording media to the first cutting position before cutting both-side edge last-half areas out of the recording media in the feed direction of the recording media while feeding the recording media; a leading end edge cutting step of feeding the recording media to a second cutting position before cutting a leading end edge out of the recording media in the feed direction of the recording media with the recording media stopped; and, a trailing end edge cutting step of feeding the recording media to the second cutting position before cutting a trailing end edge out of the recording media in the feed direction of the recording media with the recording media stopped; wherein either of the leading end edge cutting step or the tailing edge cutting step is performed between the both-side edge first-half-area cutting step and the both-side edge last-half-area cutting step.

Further, the foregoing objects are accomplished in accordance with aspects of the present invention by a printer, comprising in combination: an exposing section for exposing recording media; first feed means arranged in the exposing section for feeding the recording media; a developing section for pressing to develop the recording media exposed by the exposing section; a second feed means arranged in the course of a recording media feed path between the exposing section and the developing section for feeding to the developing section the recording media exposed by the exposing section; a cutting device for cutting four edges out of the recording media developed by the developing section; third feed means arranged between the developing section and the cutting device for feeding to the cutting device the recording media developed by the developing section; and, an apparatus housing for housing at least the exposing section, the developing section, the cutting device, and the first, second, and third feed means therein; wherein the first, second, and third feed means feed the recording media in a feed direction of the recording media while surface-contacting both side edges of the recording media, and the cutting device cuts the both side edges out of the recording media.

The foregoing and other objects, advantages, manner of operation and novel features of the present invention will be understood from the following detailed description when read in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front overview for an entire structure of the printer in an embodiment of the present invention. [0017]
FIG. 2 is an overview for structure of an exposing projector. [0018]
FIG. 3 is an enlarged side view for structure of peripheries around a cutting device. [0019]
FIG. 4 is an enlarged top view for structure of peripheries around a cutting device. [0020]
FIG. 5 is a perspective view for structure of an end cutter in the cutting device.[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The following describes in detail an embodiment of the printer according to the present invention in reference to the drawings attached here. [0022]
The printer according to the present invention includes an ink jet printer, a laser printer, and similar printing apparatuses. This embodiment described is for a printer appropriate for Cycolor film (hereinafter referred to as the Cycolor printer), the Cycolor film is a photosensitive recording sheet. [0023]
First, an overview of the Cycolor printer embodied according to the present invention is described below. [0024]
FIG. 1 is a front view illustrating the Cycolor printer [0025] 1. A top and a bottom of the figure correspond to those of an apparatus housing 100, and a right and left sides are to those of the apparatus housing 100.
A media container for [0026] media 3, including recording media and film, is arranged in an upper area of the apparatus housing 100. A media unloading port for the media 3 is arranged closed to the media container, on the top of the apparatus housing 100. A feed path is formed from the media container to the media unloading port. Along the feed path are disposed processing sections, including an exposing section, a developing section, and a fixing section. The feed path is disposed in a loop manner inside the apparatus housing 100 as wrapping the processing sections. Parts of the feed path are sharply curved, including a switchback section 64 and a alternative path 121 that will be described later. Such a construction allows every processing section to have space enough to make a single medium stay therein.
The media container has a [0027] cassette room 2 disposed on a side of the apparatus housing 1 00,on an upper left side in the figure. The cassette room 2 can load a media cassette 5 therein from a front side in the figure. The media cassette 5 is capable of containing a many number of media 3 for forming desired images. For loading the many number of media 3, they are put downward into the media cassette 5, vertically in the apparatus housing 100 (printer 1). In other words, the many number of media 3 can be loaded so that they can be linearly fed out of the media cassette 5 to the feed path without changing their direction.
Loading the [0028] media cassette 5 in the media container, or the cassette room 2, makes synchronization with a media picking arrangement (not shown) to run a pick roller 101. The pick roller 101 is pressed to the media 3 in the media cassette 5. At the same time, a media pressing arrangement (not shown) is run to press the media 3 in the media cassette 5 to the pick roller 101. As a result, the pick roller 101 can be kept to feed out the media 3 in the media cassette 5 one by one in sequence.
The [0029] cassette room 2 also has a media separating arrangement disposed therein for preventing more than one sheet of the media 3 fed by the pick roller 101 from being fed out to a feed path 51 (which will be described later) at the same time. The media separating arrangement is formed of a pick roller 101 and a separating roller 103 faced and pressed to each other. The feed roller 102 is controlled in rotation so as to feed out the media 3 toward the feed path 51, while the separating roller 103 is controlled in rotation so as to draw back the media 3 toward the pick roller 101. The feed roller 102 in the embodiment is controlled to have greater drive force (torque) than the separating roller 103. Such a media separating mechanism can separate the media 3 fed by the pick roller 101 one by one before feeding to the feed path 51.
The [0030] media 3 is formed of a viscous layer having polyester film coated with a bonding layer and containing numbers of photosensitive microcapsules called Cyris and a transparent PET (polyester terephthalate) layer covering it.
Each of the microcapsules is filled with a photosensitive agent reactive to a different wavelength and either one of dyes of CYM (cyan, yellow, and magenta). The microcapsule containing the cyan dye is cured with a red light received, that of the yellow dye with a blue light, and that of the magenta with a green light. Microcapsules being not reactive to lights of specific wavelengths and ones receiving no lights cannot be cured. Such microcapsules and a developing and fixing agent called the developer resin are bound to a special oily viscous agent to form the viscous layer. [0031]
Thus, when exposure is made by an exposing projector (which will be described later), red exposure portions have only the cyan dye cured, leaving the other dyes not cured. When a high pressure is applied by a developing roller arranged on the downstream end, the microcapsules containing the yellow dye and the magenta dye are disrupted, resulting in appearance of the red color. Similarly, green exposure portions have only the magenta dye cured, and the microcapsules containing the cyan dye and the yellow dye are destroyed, resulting in appearance of the green color. Blue exposure portions have only the yellow dye cured, and the microcapsules containing the cyan dye and the magenta dye are disrupted, resulting in appearance of the blue color. [0032]
The microcapsule is of a few microns of size. An LCD (liquid display panel) used for printing contains a few capsules per pixel. A curing degree of a microcapsule differs with amount of exposure. These mean that an image of numbers of color gradations can be formed with each microcapsule cured and disrupted depending on color data of each pixel. [0033]
A temperature controlling means (not shown) is disposed at the bottom of the [0034] cassette room 2 for controlling environment inside the media cassette 5. In the embodiment is used a Peltier device providing a Peltier effect that can produce temperature difference depending on direction of a current flowing at a junction of dissimilar metals thereof. The Peltier device can be set for either of heating or cooling by controlling the polarity of the voltage applied to the junction. The effect can be utilized to optimize the temperature and humidity inside the media cassette 5.
Below the [0035] feed path 51 is arranged the feed path 51 for feeding the media 3 fed out of the media cassette 5. The feed path 51 is directed down from the media cassette 5 toward a bottom of the apparatus housing 100 before being extended along the bottom of the apparatus housing 100 to an exposure path extended along the bottom.
The [0036] media cassette 51 has a plurality of feed rollers (two pairs of feed rollers 104 and 105 in this embodiment) arranged therealong. An error detecting sensor 107 is disposed upstream in front of the paired feed rollers 104, and a media detecting sensor 108 is disposed upstream in front of the paired feed rollers 105.
The [0037] error detecting sensor 107 is controlled to detects state of the media 3 and signals a feed error when a plurality of media 3 are not separated by the media separating arrangement mentioned above before being fed out at the same time. In the operation, feeding of the media 3 is stopped in synchronous with the feed error indication.
The [0038] media detecting sensor 108 is controlled to detect a leading end edge of the media 3 fed out of the feed path 51 via the paired feed rollers 104 before feeding out a leading end edge detection signal. In the operation, a media feeding arrangement (not shown) stops the pick roller 101 and the media separating arrangement, including the feed roller 102 and the separating roller 103, from rotating and allows only the paired feed rollers 104 and 105 according to the leading end edge detection signal. This can feed only single sheet of the media 3 to the feed path 51. The sheet of media 3 then is transferred to the exposure path. With the transference to the exposure path, the following sheet of media 3 is fed to the media cassette 5 at a predetermined instance before being stopped at a stand-by position (not shown) set in front of the exposure path. This assures the media 3 can be transferred to the exposure path one by one.
The exposure path is formed of a [0039] pre-stage path 52 disposed in series to the feed path 51 for feeding downstream the media 3 having passed through the feed path 51, a exposing stage 55 disposed downstream in series to the pre-stage path 52, and a post-stage path 57 disposed downstream in series to the exposing stage 55 for feeding the media 3 having passed through the exposing stage 55.
The exposure path has a plurality of paired rollers therein for feeding downstream the [0040] media 3 fed via the feed path 51. In the embodiment are disposed one pair of feed rollers 106 in the pre-stage path 52, three pairs of feed rollers 109, 110, and 111 in the exposing stage 55 at an equal interval, and one pair of feed rollers 112 in the post-stage path 57.
The exposing [0041] stage 55 has a media detecting sensor 113 disposed between the two pairs of feed rollers (between the paired rollers 110 and 111 in the embodiment). According to a sensor signal of the media detecting sensor 113, the media 3 can be halted once at an exposure position on the exposing stage 55. In detail, the media detecting sensor 113 sends the sensor signal out if the media 3 is put at the exposure position on the exposing stage 55 with the media 3 fed on the exposing stage 55 via the pre-stage path 52. At that time, the paired rollers 109, 110, and 111 are controlled to stop from rotating in synchronous with the sensor signal.
In the state that the [0042] media 3 is halted once, the media 3 is exposed separately to three primary color lights, including R (red), G (green), and B (blue), on a printing side 3 a thereof (FIG. 2) for a preprocess to form a desired image. It should be noticed that mylar light shields 55 a and 55 b are arranged on the upstream end and the downstream end of the exposing stage 55 respectively. The light shields 55 a and 55 b prevent the printing side 3 a of the media 3 from being irradiated by external noise lights (disturbing lights) while exposure is made on the exposing stage 55. In addition, a heater (not shown) is disposed on the bottom of the exposing stage 55 to keep the temperature of the exposing stage 55 to a specific value. The heater can minimize heat radiation of the exposing stage 55.
An exposing [0043] projector 60 as exposure light source is disposed at a position, above around a center of the apparatus housing 100, facing the exposing stage 55. The exposing projector 60 irradiates light to the printing surface 3 a of the media 3 for a specific exposure process.
The exposing [0044] projector 60 and the exposing stage 55 in the embodiment are integrated together as an exposing section for preprocessing to form the image on the printing surface 3 a of the media 3.
In the exposing [0045] projector 60, as shown in FIG. 2, the light radiated from the light source 60 a (metal halide lamp) is aligned to a parallel beam through a second optical system 60 b (an optical system including a fly array lens and a polarization converter device). The parallel beam then is deflected downward, or toward the exposing stage 55, by a mirror 60 c before passing a second optical system 60 d having a field lens, a three-color RGB filter driven to rotate, and a wave plate. If the three-color RGB filter is rotated, color image patterns are formed through an LCD panel 60 e in timing with respective R, G, and B lights. The image formed on the LCD panel 60e then is projected onto the printing surface 3 a of the media 3 on the exposing stage 55 via a deflecting plate 60 f and a projecting lens 60 g.
The [0046] media 3 having such an exposure process made is transferred to the post-stage path 57 via the paired feed rollers 112 before being controlled to stay on the post-stage path 57 for a specific sensitizing time. The sensitizing time is a period of time needed to develop colors on the exposed media 3 through a developing process (which will be described later) and optimized depending on kind of media 3, exposing time, and other factors. After the sensitizing time elapsed, the media having stayed on the post-stage path 57 is transferred to a feed path 62 via paired feed rollers 114. It should be noticed that the post-stage path 57 is flexed upward (from the bottom to the top of the apparatus housing 100 and is connected with the feed path 62. The feed path 62 is extended upward inside the apparatus housing 100.
The [0047] 62 formed vertically with respect to the apparatus housing 100 has paired cleaning rollers 115 and switchback section 64 disposed therearound in the order. The exposed media 3 is cleaned by the paired cleaning rollers 115 before being fed to the switchback section 64. In synchronous with feeding of the media 3, a successive media 3 is fed and positioned on the exposing stage 55.
The exposed [0048] media 3 is controlled to stay in the switchback section 64 for a dark time needed for coloring by the developing process (which will be described later). In detail, the switchback section 64 has two pairs of feed rollers 118 and 118 arranged therein along the feed path 62. The feed path 62 between the paired feed rollers 117 and 118 has a media detecting sensor 119 disposed thereon. If the exposed media 3 being fed by the paired feed rollers 117 and 118 reaches a specific position, the media detecting sensor 119 outputs an sensor signal. The paired rollers 117 and 118 are synchronized with the sensor signal to stop. The exposed media 3 is stayed at the specific position in the switchback section 64 for the sensitizing time. For the sensitizing time, the exposed media 3 being successively fed is made to stay on the feed paths 57 and 62 between the exposing stage 55 and the switchback section 64.
The [0049] feed path 62 in the switchback section 64 is extended upward inside the apparatus housing 100 before being broken at around a vertical center of the apparatus housing 100. The media 3 made to stay at the specific position in the switchback section 64 is returned on the same feed path 62 and guided through an alternative path 121 branched from an inlet of the switchback section 64 to a paired pressure developing rollers 68 that is a developing unit (which will be described later).
Now, the following describes structure, operation, and advantages of the [0050] switchback section 64.
The [0051] media 3 exposed on the exposing stage 55 continues photosensitization (exposure reaction) in the microcapsules thereof for a while even after the light irradiation stops. For the reason, the stabilizing time (dark time) for stabilizing the photosensitive reaction in the microcapsules is needed before the microcapsules are fractured by pressure of the paired pressure developing rollers 68. The stabilizing time can be obtained by making longer the feed path from the exposing stage 55 to the paired pressure developing rollers 68, However, arrangement must be made large due to the long feed path accordingly.
The [0052] switchback section 64 therefore is provided to make the media switchback to obtain the dark time needed without making the apparatus large. The paired feed rollers 117 and 118 in the switchback section 64 are arranged so that they can be controlled to drive independently of the other paired rollers, including the paired feed rollers 112 and 114, the paired cleaning rollers 115, and the paired pressure developing rollers 68, the dark time for reaching the paired pressure developing rollers 68 can be changed, made longer or shorter, freely by adjusting the staying time of the media 3 in the switchback section 64.
In detail, with the paired [0053] feed rollers 117 and 118 rotated, say, normally, the media 3 is taken onto the feed path 62 before being stopped at the specific position in the switchback section 64. When the dark time elapses, the paired feed rollers 117 and 118 are controlled to rotate in reverse direction if the paired pressure developing rollers 68 are synchronized with the paired feed rollers 117 and 118 in the switchback section 64, that is, if no preceding media 3 exists between the paired pressure developing rollers 68 for development. As a result, the media 3 is fed in the reverse direction on the same
In the embodiment, a switching [0054] gate 120 is disposed on the feed path 62 between the paired feed rollers 117 and the paired cleaning rollers 115. The switching gate 120 is actuated in synchronous with the reverse rotations of the paired feed rollers 117 and 118, the reverse rotations being given by the switchback driving arrangement. In that case, the media 3 fed in the reverse direction on the feed path 62 is fed to the alternative path 121 via the switching gate 120 before being guided to the paired pressure developing rollers 68 with the printing surface 3 a kept to direct up.
The paired pressure developing rollers [0055] 68, as shown in FIG. 1, are arranged to rotate as the rollers press each other at a specific pressure. The exposed media 3 in which the microcapsules have been cured has a load applied to both surfaces thereof when passing the 68 to destruct the microcapsules of hardness depending on amount of exposure. With the microcapsules of a specific hardness destructed, die (ink) in the microcapsules exudes out to develop, or color, the image.
On the downstream of the paired pressure developing rollers [0056] 68 is extended the 121 to the top of the apparatus housing 100 along inside the apparatus housing 100. The alternative path 121 has a plurality of paired feed rollers (two pairs in the embodiment, 122 and 123) provided in a course thereof. The media 3 having the development process made by the paired pressure developing rollers 68 is stabilized in the colorization while being fed on the alternative path 121 by the paired feed rollers 122 and 123.
In other words, the colorization needs some time (wait time) until the ink exudation stabilizes even after release of the pressure by the paired pressure developing rollers [0057] 68. To secure the wait time, it is preferable that length of the alternative path 121 should be made longer. It should be noticed that the alternative path 121 can be set to a desired length according to the switchback distance of the switchback section 64. This allows the wait time to be set depending on the kind of ink used.
On the upstream of the paired [0058] feed rollers 122 is disposed a media detecting sensor 125. If a downstream edge of the media 3 fed on the alternative path 121 passes the media detecting sensor 125, a signal output of the media detecting sensor 125 synchronizes a cutting device 72 to run, which will be described later.
A high-[0059] speed feed path 124 is provided in connection with an end of the alternative path 121 and extended through a top right side of the apparatus housing 100 to an outlet placed on a top left side of the apparatus housing 100.
For the high-[0060] speed feed path 124 are provided paired high-speed feed rollers 126 and the cutting device 72. The paired high-speed feed rollers 126 are controlled to rotate at the same rate as or a little faster than the feed rollers provided in the apparatus housing 100 except for the paired pressure developing rollers 68 at least. The cutting device 72 is arranged on the top of the apparatus housing 100 (top right side looking on the drawing) and serves to cut four margins of the media 3.
The [0061] cutting device 72, as shown in FIGS. 3 through 5, has a side cutter 72 a formed in a longer direction of the high-speed feed path 124, or the feed direction of the media 3, for cutting the both side edges of the media 3 while the media 3 is fed, and a end cutter 72 b formed along the feed path, in a direction traversing the high-speed feed path 124, for cutting the leading and trailing end edges of the media 3 while the media 3 is stopped. The side cutter 72 a cuts first halves of the both side edges of the media 3 in the feed direction before cutting the last halves of the both side edges in a specific timing. In the embodiment is arranged the side cutter 72 a on the upstream side of the high-speed feed path 124 and at a curve of the high-speed feed path 124 on the top corner of the apparatus housing 100 and is arranged the cutter 72 b on the virtually horizontal path on the downstream side thereof. Alternatively, the edge cutter 72 b may be arranged on the upstream of the high-speed feed path 124, and the side cutter 72 a may be arranged on the downstream side thereof.
The [0062] side cutter 72 a has paired rollers (first and second rollers 151 and 152) rotating while press-contacting with each other for guiding the media 3 along the high-speed feed path 124 and has rotary blades (first and second rotary blades 153 and 154) disposed on each end of the first and second rollers 151 and 152 respectively for cutting both side edges of the media 3 as rotated by the first and second rollers 151 and 152. That is, the media 3 is cut of the both side edges while fed to change in direction along a part of surface of the second roller 152 arranged downward as nipped by the first and second rollers 151 and 152. The high-speed feed path 124 in the embodiment has a curvature of around 90 degrees on a curved portion thereof on which the side cutter 72 a is arranged as the high-speed feed path 124 on the top corner of the apparatus housing 100. The first and second rotary blades 153 and 154 are rotated while always press-contacting with each other while the first and second rollers 151 and 152 are rotated. Each of the first rotary blades 153 disposed for the respective ends of the first roller 151 is fixed on the first roller 151 via a spacer 156 extendedly provided in the direction traversing the high-speed feed path 124. Each of the second rotary blades 154 disposed for the respective ends of the second roller 152 is always pressed outward (toward the first rotary blade 153 by an urging spring 155 arranged between the second rotary blade 154 and the second roller 152. With such a structure, the second rotary blade 154 is always kept pressed to the first rotary blade 153 by urging force of the urging spring 155.The extension of the spacer 156 can be adjusted to change the both side edge widths cut out of the media 3.
The [0063] end cutter 72 b has paired blades (upper blade 157 and lower blade 158) of capable of cutting the both leading and trailing edges of the media 3 by moving in a direction traversing the media 3 and up and down vertically in relation to the media 3. As an example of the embodiment, it is structured that the lower blade 158 is fixed on a frame supported on the apparatus housing 100, and the upper blade 157 is provided to move up and down along the lower blade 158. The present invention, however, should not be limited to the structure but instead, paired blades fixed on a sliding member moving in the direction traversing the media 3, as an example, can be used.
The [0064] cutting device 72 also has a driving arrangement for driving the cutting device 72 and can be controlled in its own timing. The driving arrangement is divided into a side cutter driving arrangement and an edge cutter driving arrangement that can be controlled in their respective own timings.
In the side cutter driving arrangement, the [0065] first roller 151 is linked via a gear arrangement 160 with the second roller 152, the second roller 152 is linked via an endless belt 161 with the paired high-speed feed rollers 126 (rollers arranged between the side cutter 72 a and the end cutter 72 b in the embodiment), and the paired high-speed feed rollers 126 are linked via an endless belt 162 with a side cutter driving motor 163.
In the edge cutter driving arrangement, the [0066] upper blade 157 is linked on both ends thereof with cams 165 via vertically sliding member 164, and the cams 165 are rotatably supported by an eccentric cam shaft 166. The eccentric cam shaft 166 is liked via a gear arrangement 167 with an edge cutter driving motor 168.
Controlling the driving arrangements in their own timings makes it possible to adjust time for a bleaching process which will be described later, resulting in increased efficiency and stabilization of the printing process. [0067]
The [0068] cutting device 72 described above is structured to eliminate curling of the media 3 for plain surface to cut the edges. As an example, the media 3 could be curved in the direction traversing or in a longer direction along the feed path when passing the processing sections provided on the upstream, particularly the paired pressure developing rollers 68 as the developing section.
As means for eliminating, or correcting, the curve, the [0069] side cutter 72 a has both the first and second rollers 151 and 152 served to eliminate the curve of the media 3 warping in the directing traversing the feed path when the first and second rotary blades 153 and 154 cut the both side edges of the media 3. That is, the both side edges are cut while the first and second rollers 151 and 152 stretch the width direction curve (curling) of the media 3. On the curve of the high-speed feed path 124, or on the top corner of the apparatus housing 100, as described above, is arranged the side cutter 72 a and the first and second roller 151 and 152. The media 3 could be curved in the direction traversing the feed path in the course curved along the part of the surface of the one pressure developing roller as pressed at a high pressure when passing the paired pressure developing rollers 68 as the developing section. To eliminate, or correct, the curve, the media 3 held by the first and second rollers 151 and 152 are positioned to a curving posture opposite to the curve produced in the media 3 in the developing section. For the purpose, the feed path from the developing section (the paired pressure developing rollers 68) to the cutting device 72 is virtually S-shaped, thereby eliminating, or correcting, the curve produced in the media 3.
The [0070] cutting device 72 has a decurling arrangement (not shown) for eliminating the curve of the media 3 in the longer direction of the feed path before the blades 157 and 158 of the end cutter 72 b cut the leading and trailing end edges of the media 3. The decurling arrangement can be formed of paired rollers of relatively large diameter. With such a structure, the leading and trailing end edges can be cut out while the curve (curling) in the longer direction is stretched by the decurling arrangement.
In the [0071] cutting device 72, a path length in the longer direction of the feed path from the side cutter 72 a to the end cutter 72 b is determined shorter than a length of the media 3 in the longer direction. It is further preferable that the path length in the longer direction of the feed path from the side cutter 72 a to the end cutter 72 b is determined a half of the length of the media 3 in the longer direction. With the path length determined as such, the cutting device 72 can be made compact, resulting in making the printer 1 smaller.
Further, to lead the [0072] media 3 into the side cutter 72 a and the end cutter 72 b of the cutting device 72 stably and securely, it preferable that a leading member, for example, a taper or mylar, should be arranged on the feed path right before leading the side cutter 72 a and the end cutter 72 b each.
The [0073] media 3 in the cutting device 72 is cut on the first halves of the both side edges by the side cutter 72 a first, on the leading end edge by the end cutter 72 b, on last halves of the both side edges by the side cutter 72 a, and on the trailing end edge by the end cutter 72 b in the order. For the operation, a media detecting sensor 128 is arranged in front of the upstream side of the end cutter 72 b for always detecting the leading and trailing positions on the upstream and downstream sides of the media 3 being fed, thereby controlling the end cutter 72 b for cutting timings of the leading and trailing end edges of the media 3. It should be noticed that rotational rates of the first and second rollers 151 and 152 of the paired side cutters 72 a are controlled to rotate at the same rate as the paired high-speed feed rollers 126.
The paired [0074] rollers 109,110, and 111 arranged in the media cassette 55 formed as parts of the exposing section, the paired feed rollers 112, 114, 117, and 118 arranged on the feed path for the media 3 from the media cassette 55 to the paired pressure developing rollers 68 as the developing section, and the paired feed rollers 122, 123, and 126 (paired high-speed feed rollers arranged between the paired feed rollers 123 and the side cutter 72 a) arranged on the feed path between the paired pressure developing rollers 68 and the cutting device 72, are all made to surface-contact the both side edges of the media 3 to feed to the downstream sides. The surface-contacting areas of the media 3 are cut out later by the side cutter 72 a of the cutting device 72. Even if the areas are scratched, therefore, the media 3 is not deteriorated in image quality, being able to keep the print at a desired status.
Below the cutting device [0075] 72 (higher portion of the apparatus housing 100) is arranged a containing section 75 for containing the margins cut out of the media 3 therein, or the margin dust cut out by the cutting device 72 drops into the containing section 75 to collect. In the embodiment, the both side edges cut out of the media 3 by the side cutter 72 a of the cutting device 72 drop arcing along parts of the surface of the second roller 152 down into a containing section 75. The leading and trailing end edges cut out of the media 3 by the end cutter 72 b drop vertically down into the containing section 75. In actual operation, the environment in the apparatus tends to generate static electricity as the atmosphere is at high temperature and the cut material is of polyester. The static electricity causes sticking of the cut margins when the margins of the media 3 are cut by the paired slitter rollers 72 a (side cutter) and the cutter 72 b, resulting in hard dropping of the various margins and sticking on the inlet. For the reason, the containing section 75 in the embodiment has a specific antistatic process made thereon. Examples of the antistatic process may include sticking of a conductive material such as copper tape to parts of the containing section 75 or forming the entire containing section 75 of a conductive material such as a metallic material.
The high-[0076] speed feed path 124 on the downstream end of the cutting device 72 has a bleaching section 77 for bleaching process.
The following describes the bleaching process briefly. [0077]
The [0078] media 3 exposed on the exposing stage 55 forms an image as it exudates necessary amount of die (ink) as being pressed. To express variable densities, the media 3 is exposed to intermediate amounts of light to make hardness of the microcapsules intermediate, thereby making the ink exudation intermediate. If the media 3 is left in such a condition after pressing, the ink exudation proceeds. The media 3 therefore cannot be fixed to a desired color. To prevent that, light is re-irradiated on the printing surface 3 a of the media 3 in the course of feeding from the cutting device 72 to a post-heating section 80 (outlet, which will be described later). Such a process can completely cure the microcapsules that have not been fully cured yet. The printing surface 3 a thus can keep stable print image for ages without color change.
The embodiment has the bleaching section [0079] 77 arrange with use of the space above the exposing projector 60. In view of the fact that considerable amount of the light emitted from the light source 60 a of the exposing projector 60 (FIG. 2) is leaked out thereof, the bleaching section 77 is arranged at a position where the leaked light can be used, that is, a position above the exposing projector 60.
It should be noticed that the [0080] printing surface 3 a of the media 3 is directed upward in the bleaching section 77, or in a direction opposite to the light source 60 a, as the media 3 is reverted in the switchback section 64. For the reason, to irradiate the leaked light down to the printing surface 3 a, a mirror (not shown) is arranged above the exposing projector 60. It is preferable to set the paired feed rollers arranged in the bleaching section 77 should be driven a little slower than the ones arranged in the other feed paths in view of fast continuous process of the media 3, as the bleaching exposure has to be made for a specific time for a desired effect.
On the downstream end of the bleaching section [0081] 77, or at the top left side of the apparatus housing 100, is disposed the outlet in which the post-heating section 80 is arranged.
The post heating is to make a heating process for accelerating the coloring process as the coloring takes long time until the die (ink) develops its primary color. The post heat is made at 90 degrees C. for one minute to virtually saturate exudation of the die, thereby preventing color change afterwards. [0082]
Making the [0083] media 3 stay on the feed path is limited in connection with the media 3 for continuous printing process to form the image on the media 3 and lowers the production capability as will be described later. For the reason, the post-heating section 80 in the embodiment is formed of a room for continuously stacking the media 3 vertically at a specific position and a temperature control arrangement, including a sensor and a heater, for keeping the room at a specific temperature. The room temperature is controlled to the desired one of 90 degrees C. mentioned above.
The bleached [0084] media 3 in the post-heating section 80 is led to paired retention guides (not shown) facing each other before position on leads (not shown) of lead screws 131. The lead screws 131 are at positions at which four corners of the media 3 can be stably supported. In the state, the paired retention guides are saved away once before the lead screws 131 are rotated one turn to move the media 3 down by one lead. The paired retention guides 83 then are returned to the media bringing position to position the following media 3 at the leads of the lead screws 131.
Such a repeated operation, including bringing the [0085] media 3, positioning, and moving down, makes the media 3 stay in the post-heating section 80. For the duration, the media 3 is heated by a heater (not shown) to fully develop the colors and prevent aging.
The lead screws [0086] 131 are further turned to make the media 3 discharge onto a discharge tray (not shown) via a feed belt (not shown) in ascending order.
[0087] Corners 146 and 147 on the feed path of the printer 1 constructed as described above are formed to curve at a curvature corresponding to a shape and dimensions of the apparatus housing 100. The corners 146 and 147 have one or a plurality of urging rollers provided for urging the media 3. The embodiment has one urging roller 148 disposed inside the corner 146 and has two urging rollers 149 and 150 disposed inside the corner 147. The urging rollers 148, 149, and 150 are structured to urge the media 3 outward from the printing surface 3 a side when the media 3 passes the corners 146 and 147. If the printing surface 3 a is urged directly on the printing area thereof, the printing surface 3 a is injured. To avoid this, the urging rollers 148,149, and 150 in the embodiment are arranged to urge (press) edges surrounding the printing area of the printing surface 3 a at specific urging forces. It should be noticed that the urging force can be optimized depending on the type of media 3, the feed speed, and the curvatures of the corners. Such a structure has the advantage that the media 3 can pass the corners 146 and 147 stably without deviation in the feed direction while the media 3 a is protected. The edges of the media 3 have no problem for scarring due to the urging rollers since they are cut out by the cutting device 72.
The following describes operation of the Cycolor printer configured as described above briefly. [0088]
When printing is started in the state that the [0089] media cassette 5 is loaded in the cassette room 2, the media 3 fed from the media cassette 5 by pick roller 101 are fed out one by one to the feed path 51 by the media separating arrangement, including the feed roller 102 and the separating roller 103, before being fed from the pre-stage path 52 to the exposing stage 55. The exposing stage 55 stops the media 3 once. The exposing projector 60 irradiates light onto the printing surface 3 a of the media 3 on the basis of a desired image pattern, thereby making the exposure process as a preprocess for forming the desired image.
After the exposure process ends, the exposed [0090] media 3 is transferred to the post-stage path 57 with the media 3 a directed up and specifically cleaned by the paired cleaning rollers 115 before being fed through the feed path 62 to the switchback section 64.
The [0091] switchback section 64 allows the exposed media 3 to stay for a time (dark time) enough to fully develop its colors. It should be noticed that the successive media 3 fed after are made to stay on the feed paths 57 and 62 between the exposing stage 55 and the switchback section 64. After that, the preceding media 3 is fed back on the feed path 62 again at a specific timing as the paired feed rollers 117 and 118 are controlled to rotate inversely.
The [0092] media 3 fed back on the feed path 62 is fed to the alternative path 121 via the switching gate 120, is guided to the paired pressure developing rollers 68, and has surface load applied to the both sides thereof, thereby forming (color-developing) the desired image.
The [0093] media 3 having the development process completed is continued to feed along parts of the surface on one of the paired pressure developing rollers 68 to transfer from the alternative path 121 to the high-speed feed path 124, is checked for paper jamming in the course of feed by the paper jam detecting sensor 127, and is fed to the cutting device 72.
The [0094] media 3 having the four side edges cut out by the cutting device 72 is bleaching-processed (ink-fixing-processed) during passing the bleaching section 77, is discharged to the take-out part (post-heating section 80) on the top left side of the apparatus housing 100. It should be noticed that the media detecting sensor 129 arranged in front of the upstream side of the post-heating section 80 controls the discharge timing for the media 3.
[0095] 3 The cutting device 72 in the embodiment, as described above, is structured to cut the four edges out of the media 3 being fed by having a side cutter 72 a for cutting both side edges of the media 3 fed in the feed direction of the media 3, having the end cutter 72 b for cutting the leading and trailing end edges out of the media 3 fed in the feed direction of the media 3, and having the feed path 124 having the curves formed on at least one part thereof where the side cutter is arranged on the corner of the feed path 124. The cutting device 72 therefore can cut the four edges out of the media 3 accurately and securely while making the media 3 elastic on the corner of the high-speed feed path 124.
Also, the cutting [0096] device 72 can be made compact since the path length in the longer direction of the feed path from the side cutter 72 a to the end cutter 72 b is determined shorter than, preferably the half of, the length of the media 3 in the longer direction.
Further, the cutting method provides accurate and secure cutting of the four edges out of the [0097] media 3 and shortening of the time taken by the cutting as well since the cutting method has the step of cutting the leading end edge or the step of cutting the trailing end edge put between the step of cutting the both side edge first half areas out of the media 3 and the step of cutting the both side edge last half areas out of the media 3.
Further more, with the printer [0098] 1 in the embodiment, the paired rollers 109, 110, and 111 arranged in the media cassette 55 formed as parts of the exposing section, the paired feed rollers 112, 114, 117, and 118 arranged on the feed path for the media 3 from the media cassette 55 to the paired pressure developing rollers 68 as the developing section, and the paired feed rollers 122, 123, and 126 (paired high-speed feed rollers arranged between the paired feed rollers 123 and the side cutter 72 a) arranged on the feed path between the paired pressure developing rollers 68 and the cutting device 72, are all made to surface-contact the both side edges of the media 3 to feed to the downstream sides. The surface-contacting areas of the media 3 are cut out later by the side cutter 72 a of the cutting device 72. Even if the areas are scratched, therefore, the media 3 is not deteriorated in image quality, being able to keep the print at a desired status. The media 3 used in such a printer 1 as described above can decrease the running cost since it, unlike the prior art, does not need the technique that the four edges of the media 3 are pre-exposed to white in advance and, the microcapsules existing on the edges are made inactive as the white frame to prevent the white edges from becoming black even if after that, the pressure is applied to the edges at the cutting step for the standard form (creating cut sheets).
Further, with the printer [0099] 1 in the embodiment, controlling the driving arrangements for driving the cutting device 72 in their own timings makes it possible to adjust time for a bleaching process which will be described later, resulting in increased efficiency and stabilization of the printing process.
Further more, with the printer [0100] 1 in the embodiment, the cutting device 72 is structured to eliminate curling of the media 3 for plain surface to cut the edges, thereby making it possible to always cut the edges out of the media 3 at accurate size.
More over, with the printer [0101] 1 in the embodiment, the dust of edges cut out by the cutting device 72 will not stick to the inlet of the containing section 75 but drops smoothly into the inside since the containing section 75 for collecting dust of the edges cut out by the cutting device 72 is antistatic-processed.
The present invention is not limited to the embodiment described above, but can be modified in many ways as follows. [0102]
The [0103] cutting device 72 in the above-described embodiment has the side cutter 72 a and the end cutter 72 b arranged in this order from the upstream to the downstream on the feed path. On the contrary, the end cutter 72 b and the side cutter 72 a can be arranged in this order from the upstream to the downstream on the feed path. With the cutting device structured above, the end cutter 72 b cuts the leading end edge margin and the trailing end edge margin out of the media 3 before the side cutter 72 a cuts the both side margins out of the media 3 from the first half area to the last half area. In that case, the same operational effect as the embodiment described above can be obtained with the structure that the path length in the longer direction of the feed path from the side cutter 72 a to the end cutter 72b is determined shorter than, preferably the half of, the length of the media 3 in the longer direction.
In the cutting device [0104] 72 (end cutter 72 b) in the embodiment described above, it is structured that the lower blade 158 is fixed on the frame 159 supported on the apparatus housing 100, and the upper blade 157 is provided to move up and down along the lower blade 158. The same operational effect can be obtained with a contrary structure that the upper blade 157 is fixed on the frame 159 supported on the apparatus housing 100, and the lower blade 158 is provided to move up and down along the upper blade 157.
The embodiment of the present invention has been described in detail with the example of Cycolor type printer suitable for the Cycolor film as a photosensitive recording sheet. The present invention can also be embodied for printers of other different types. [0105]

Claims

What we claim is:

1. A cutting device for cutting four edges out of recording media being fed, comprising in combination:

a side cutter for cutting both side edges of said recording media fed in a feed direction of said recording media;

an end cutter for cutting a leading and trailing end edges out of said recording media fed in a feed direction of said recording media; and,

a recording media feed path having a curve or a plurality of curves formed on at least a part thereof;

wherein said side cutter is arranged on said corner or corners of the recording media feed path.

2. The cutting device according to claim 1, wherein said side cutter is arranged on an upstream side in said feed direction of said recording media and said end cutter is arranged on a downstream side in said feed direction of said recording media.

3. The cutting device according to claim 1, wherein a length of a feed path formed between said side cutter and said end cutter for said recording media is determined shorter than a longer length of said recording media in a feed direction of said recording media.

4. The cutting device according to claim 1, wherein said side cutter has at least rotary blades and has feed rollers provided on the same axes of rotating shafts of said rotary blades for feeding said recording media, said recording media being fed along a part of a surface of said feed rollers while being changed in feed direction.

5. The cutting device according to claim 3, wherein said end cutter has at least paired blades, said paired blades being used to cut said leading and trailing end edges out of said recording media with said recording media stopped at a specific position, and said rotary blades being used to cut said both side edges out of said recording media while said recording media is fed.

6. A cutting method of recording media of cutting four edges out of recording media, comprising in combination:

a both-side edge first-half-area cutting step of feeding said recording media to a first cutting position before cutting both-side edge first-half areas out of said recording media in a feed direction of said recording media while feeding said recording media;

a both-side edge last-half-area cutting step of feeding said recording media to said first cutting position before cutting both-side edge last-half areas out of said recording media in said feed direction of said recording media while feeding said recording media;

a leading end edge cutting step of feeding said recording media to a second cutting position before cutting a leading end edge out of said recording media in said feed direction of said recording media with said recording media stopped; and,

a trailing end edge cutting step of feeding said recording media to said second cutting position before cutting a trailing end edge out of said recording media in said feed direction of said recording media with said recording media stopped;

wherein either of said leading end edge cutting step or said tailing edge cutting step is performed between said both-side edge first-half-area cutting step and said both-side edge last-half-area cutting step.

7. The cutting method according to claim 6, wherein said both-side edge first-half-area cutting step is performed before said leading end edge cutting step is performed and, said both-side edge last-half-area cutting step is performed before said trailing end edge cutting step is performed.

8. The cutting method according to claim 6, wherein said both-side edge first-half-area cutting step and said both-side edge last-half-area cutting step cut both said side edges out of said recording media while curve-feed said recording media.

9. The cutting method according to claim 8, wherein the curve-feed of said recording media in said both-side edge first-half-area cutting step and said both-side edge last-half-area cutting step is made at an angle of around 90 degrees.

10. The cutting method according to claim 6, wherein at least a part of said recording media is stopped as curved when either of said leading end edge cutting step or said trailing end edge cutting step is performed.

11. A printer, comprising in combination: an exposing section for exposing recording media;

first feed means arranged in said exposing section for feeding said recording media;

a developing section for pressing to develop said recording media exposed by said exposing section;

a second feed means arranged in the course of a recording media feed path between said exposing section and said developing section for feeding to said developing section said recording media exposed by said exposing section;

a cutting device for cutting four edges out of said recording media developed by said developing section;

third feed means arranged between said developing section and said cutting device for feeding to said cutting device said recording media developed by said developing section; and,

an apparatus housing for housing at least said exposing section, said developing section, said cutting device, and said first, second, and third feed means therein;

wherein said first, second, and third feed means feed said recording media in a feed direction of said recording media while surface-contacting both side edges of said recording media, and said cutting device cuts said both side edges out of said recording media.

12. The printer according to claim 11, wherein at least a part of said feed path for said recording media from said exposing section to said cutting device is curved, and said cutting device is arranged on the curving portion of said feed path for the recording media.

13. The printer according to claim 12, wherein said cutting device is arranged on an upper corner of said apparatus housing.

14. The printer according to claim 12, wherein said developing section has a curved feed path formed therein for leading said developed recording media to said cutting device and, the feed path for said recording media connecting said curved feed path with said feed path having said cutting device arranged thereon is virtually S-shaped.

15. The printer according to claim 14, wherein said cutting device has vertically cutting means having blades for cutting leading and trailing edges out of said recording media moving in the feed direction of said recording media as moving up and down vertically in relation to said recording media and has rotary cutting means having rotary blades for cutting said both side edges out of said recording media in the feed direction of said recording media by rotating while pressing each other.

16. The printer according to claim 15, further comprising in combination feed rollers provided on the same axes of rotating shafts of said rotary cutting means, said developing section having pressure rollers for feeding said recording media while pressing, wherein said recording media is fed along parts of surfaces of said feed rollers and said pressure rollers.

17. The printer according to claim 16, further comprising in combination a containing section arranged below said cutting device for containing the four edges cut out of said recording media by said cutting device, wherein said both side edges cut out of said recording media by said rotary cutting means drop arcing along parts of the surface of the feed roller down to be contained in said containing section, and said leading and trailing end edges cut out of the recording media by said vertically cutting means drop vertically down to be contained in said containing section.

18. The printer according to claim 17, wherein said containing section has a specific antistatic process made thereon.

19. The printer according to claim 18, wherein said antistatic process has a conductive material provided on at least a part of said containing section.