EP1164027A2 - Ink jet printer with device for avoiding undesirable belt movement - Google Patents
Ink jet printer with device for avoiding undesirable belt movement Download PDFInfo
- Publication number
- EP1164027A2 EP1164027A2 EP01000014A EP01000014A EP1164027A2 EP 1164027 A2 EP1164027 A2 EP 1164027A2 EP 01000014 A EP01000014 A EP 01000014A EP 01000014 A EP01000014 A EP 01000014A EP 1164027 A2 EP1164027 A2 EP 1164027A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- belt
- rollers
- ink jet
- jet printer
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/60—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing on both faces of the printing material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/007—Conveyor belts or like feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/02—Framework
- B41J29/023—Framework with reduced dimensions
Definitions
- the present invention relates to an apparatus and a method for printing images; the invention especially concerns the printer configuration.
- the invention is particularly suitable for ink-jet printing using a belt for conveying an image receiving substrate.
- transport of the image receiving substrate in one or the other stage of the printing process proceeds by a belt, c.q. a vacuum belt.
- E.g. US-A-4 469 026 discloses a printer having a sheet fed and drum transport assembly. Ink is applied to a sheet while it is transported by the drum. Subsequently, the receiving substrate is detached from the drum and conveyed by a vacuum belt past a dryer.
- Patent application WO 99/11 551 discloses a printer wherein sheets are transported by a vacuum drum.
- a simplex printer has one vacuum drum, while a duplex printer uses two counter-rotating drums.
- a duplex printer a first image is printed on one side of a paper sheet while the sheet is on the first drum; then the paper is fed to the second drum so that the first printed image contacts the second drum, and a second image is printed on the opposite side of the paper.
- the printer can also be used to print on a continuous web instead of on separate sheets.
- Printers wherein the image receiving substrate passes the printhead while it is carried by a belt can have problems with keeping the "throw distance" - i.e. the distance that the ink has to travel between the ink application means, for instance an ink-jet nozzle, and the receiving substrate - constant while such a belt can show movement to and away from the printhead, vertical movement. It is also possible that, during operation of the printer, such a belt not only shows a vertical movement, but also some lateral movement, so that the registering of colour selection of the image to be printed on the receiving substrate is not as good as it should be.
- US-A-5 966 145 it is disclosed to support the belt underneath the printhead so as to avoid the movement to and away from the printhead.
- the support is in sliding contact with the belt and does not add to the tensioning of the belt, so that problems with wear of the belt due to the sliding contact exist and since the supports do not add to the tension of the belt, the problems of vibration sill exist.
- the first object of the invention is realised by providing an ink jet printer comprising
- the second object of the invention is realised by providing an ink jet printer comprising
- an ink jet printer comprising
- Fig 1a shows schematically a belt moving over two rollers and with a guiding means creating a bulge in the belt.
- Fig 1b shows an enlarged portion (circle B) of the guiding means, showing the angle over which the belt forms an arc.
- Fig 2. shows schematically a belt and a guiding means comprising two rollers.
- Fig 3 shows schematically the placement of two rollers, one with a flange and not being parallel with each other.
- a monochrome printer In a monochrome printer, the problem of misregistering is less important and it may be sufficient to have an high quality printer when the "throw distance" is kept constant.
- a multicolour printer using a short belt, it may be that the undesired vertical movement does not exist and that only means for avoiding undesired lateral movement of the belt are necessary.
- a multicolour printer using a longer belt it may that means have to be incorporated for avoiding both the vertical movement and the lateral movement of the belt.
- the 'throw-distance' is the distance that the ink has to travel between the ink application means, for instance an ink-jet nozzle, and the receiving substrate.
- the belt may move slightly towards or away from the ink application means during the ink application, due to disturbances in the movement of the belt. This movement causes the throw-distance to change over time, and this changing "throw distance" results in lower print quality.
- FIG 1 a means to minimise and even avoid the undesired movement of the belt to and from the printhead, i.e. the vertical movement is shown.
- a belt (14), carrying an image receiving substrate (20) moves in the direction of arrow A over a first and second roller (13, 15), each of said rollers having an axis (13a, 15a).
- a guiding means (18) is placed at the location where ink is applied onto the receiving substrate (20) in such a way that the belt passes between the guiding means and an ink ejection means (11) (further on indicated by the wording "printhead").
- the guiding means (18) is placed so that the belt is pushed towards the printhead (11) away from the position (14a) it would have when no guiding means is present.
- the guiding means creates a bulge, d, in the belt, elevating the belt from the position the belt would have without guiding means towards the printhead (11).
- the guiding means (18) is preferably designed so as to avoid sliding contact between the belt and the guiding means, therefore include any kind of rotatable member. But most preferably it includes a small roller (with diameter smaller than the diameter of the rollers (13, 15)), with an axis substantially parallel to the axis of rollers (13, 15) in Fig. la.
- the guiding means (18) may guide the belt over convex arc covering an angle, ⁇ , between 0 and 90 °, both limits included. It is preferred that it guides the belt over a small convex arc covering an angle of e.g. 1° to 5°, or even smaller than 1°. In a very preferred embodiment, said angle ⁇ is such that 15" ⁇ ⁇ ⁇ 5 °. This angle is shown in figure 1b (an enlargement of part of figure la, the numericals in figure 1b have the same meaning as those in figure 1a).
- the guiding means used in this invention can very beneficially be designed to incorporate at least two rollers that are placed quite close together so that on top of the two rollers the belt is kept in a straight line.
- a printhead with several rows of nozzles can be accommodated above the guiding means and the throw distance for each of the rows of nozzles is kept constant, since the belt and the image receiving substrate on it are in a straight line under the rows of nozzles.
- Such guiding means are shown in figure 2, wherein a portion of a full colour printer, incorporating a belt (14) and guiding means (18a, 18b, 18c and 18d) is shown.
- the belt (14) passes over guiding means (18a, 18b, 18c and 18d) in the direction of arrow A.
- Each of the guiding means comprises two rollers ((21a, 22a),(21b, 22b), (21c, 22c), (21d, 22d)), said rollers having a radius R1 and R2.
- the radii of the rollers are only shown for guiding means 18a.
- the rollers in the guiding means are coupled to each other by a coupling means (23a, 23b, 23c and 23d) said coupling means being connected to a support (25a, 25b, 25c and 25d) so as to be movable around a connection means (24a, 24b, 24c and 24d).
- the supports (25a, 25b, 25c and 25d) are placed on a frame (26) in the printer so as to keep the belt (14) tensioned by each of the guiding means (18a, 18b, 18c and 18d) and to create 4 straight portions in the belt .
- a printhead (lla, llb, 11c and 11d) is positioned so that the nozzle plate of the printhead, having one or more arrays of nozzles, is parallel to each of said straight portions of the belt.
- the rollers (21a, 22a, 21b, 22b, 21c, 22c, 21d, 22d) in the guiding means ((18a, 18b, 18c and 18d) can have a different or an equal diameter depending on the needs of the design of the printer.
- the diameter of the rollers and the distance between the axis of the two rollers (18a) is adapted so as to have a good compromise between the length of the straight portion of the belt between points P1 and P2, the risk that the belt gets a vertical movement in that straight portion and the extension of the rows of nozzles in the nozzle plate.
- the distance between the two axis is larger than (R1 + R2) and smaller than 2 times (R1 + R2).
- the tightening means are vacuum applicators; a first vacuum applicator is located downstream and adjacent to the guiding means and a second vacuum applicator is located upstream and adjacent to the guiding means; the forces exerted by both vacuum applicators on the belt tighten the belt against the guiding means.
- the tightening means may be located anywhere along the belt and provide an adequate belt tension in the complete belt, while the guiding means have protruding positions as shown in figure 1a and 2. This second embodiment may be combined with the first one, i.e. vacuum applicators may be used to tighten the belt in the second embodiment.
- the means according to this invention for avoiding vertical movement of the belt offer several advantages :
- the roller may have flanges at both ends (as shown in figure 3) and more than one roller may have one or two flanges, it is sufficient for avoiding undesired lateral movement of the belt that one roller has one flange, since it is possible by making a judicious choice of the angle ⁇ to force the belt against the single flange.
- the size of the angle ⁇ is chosen so as to force the belt against the flange for avoiding lateral movement of the belt and so as to avoid too much friction of the belt against that flange.
- the sign of the angle ⁇ can be positive as well as negative and determines which flange is touched by the belt. Further on in this text when the size of angle ⁇ is mentioned, it is mentioned without its sign as its absolute value,
- FIG 3 this is schematically illustrated.
- a first roller (13) has flanges (13b) a both ends and is placed so as to be not parallel with the second roller (15).
- the line 13c shows the position of the first roller when it would be placed parallel.
- the first roller deviates from the parallelism with the second one over an angle ⁇ , chosen such that 15" ⁇
- ⁇ is chosen such that 15" ⁇
- the flanges (13b) on the first roller can be separate from the roller and simply clipped over the roller, or can be an integral part of the roller, when the roller is machined so as to have flanges incorporated directly.
- the form and height of the flanges is dictated by the belt, the tension on the belt, etc. and can easily be adapted to fulfil their purpose : forcing the belt against one of flanges and thus keeping it moving in the direction of arrow A, without undesired lateral movement.
Abstract
An ink jet printer wherein a belt (14) transports an image
receiving member (20) past a printhead (11) is equipped with guiding
means (18) for creating a bulge, d, in said belt (14), extending
towards said ink ejecting means (11), thus keeping the "throw
distance" constant and/or with rollers (13, 15) for moving the belt
(14), one of the rollers having a flange (13b) and being positioned
so as to force the belt agains the flange.
Description
The present invention relates to an apparatus and a method for
printing images; the invention especially concerns the printer
configuration. The invention is particularly suitable for ink-jet
printing using a belt for conveying an image receiving substrate.
In many ink jet printers, transport of the image receiving
substrate in one or the other stage of the printing process,
proceeds by a belt, c.q. a vacuum belt.
E.g. US-A-4 469 026 discloses a printer having a sheet fed and
drum transport assembly. Ink is applied to a sheet while it is
transported by the drum. Subsequently, the receiving substrate is
detached from the drum and conveyed by a vacuum belt past a dryer.
In US-A-5 712 672 a printer is disclosed wherein sheets are
transported by means of a vacuum belt past an ink-jet printhead and
through a microwave dryer.
Patent application WO 99/11 551 discloses a printer wherein
sheets are transported by a vacuum drum. A simplex printer has one
vacuum drum, while a duplex printer uses two counter-rotating drums.
In a duplex printer, a first image is printed on one side of a paper
sheet while the sheet is on the first drum; then the paper is fed to
the second drum so that the first printed image contacts the second
drum, and a second image is printed on the opposite side of the
paper. The printer can also be used to print on a continuous web
instead of on separate sheets.
Printers wherein the image receiving substrate passes the
printhead while it is carried by a belt (a vacuum belt as well as a
non-vacuum belt) can have problems with keeping the "throw distance"
- i.e. the distance that the ink has to travel between the ink
application means, for instance an ink-jet nozzle, and the receiving
substrate - constant while such a belt can show movement to and away
from the printhead, vertical movement. It is also possible that,
during operation of the printer, such a belt not only shows a
vertical movement, but also some lateral movement, so that the
registering of colour selection of the image to be printed on the
receiving substrate is not as good as it should be.
In US-A-5 966 145 it is disclosed to support the belt
underneath the printhead so as to avoid the movement to and away
from the printhead. The support is in sliding contact with the belt
and does not add to the tensioning of the belt, so that problems
with wear of the belt due to the sliding contact exist and since the
supports do not add to the tension of the belt, the problems of
vibration sill exist.
Thus it is still desired to have means and ways available to
minimise and even totally avoid undesired movement of the vacuum
belt, without excessive wear of the belt.
It is an object of the invention to provide an ink jet printer
with a belt for transporting an image receiving substrate comprising
means for minimising or even avoiding undesired movements of the
belt that can deteriorate the image quality of the printed image.
It is a further object of the invention to provide an ink jet
printer with a belt for transporting an image receiving substrate
comprising means for minimising or even avoiding undesired vertical
movement of the belt so as to have a constant "throw distance".
It is an other object of the invention to provide an ink jet
printer with a belt for transporting an image receiving substrate
comprising means for minimising or even avoiding lateral movement of
the belt so as to have a good registering of colour selections of
the image to be printed on the receiving substrate.
The first object of the invention is realised by providing an
ink jet printer comprising
said belt (14) contacts a guiding means (18), placed between said first and second roller, for creating a bulge, d, in said belt (14), extending towards said ink ejecting means (11).
The second object of the invention is realised by providing an
ink jet printer comprising
said first roller (13) has flanges (13b) at said first and second end and is placed in said printer so that it deviates from parallelism with said second roller (15).
In a very preferred embodiment of this invention there is
provided an ink jet printer comprising
- said first roller (13) has flanges (13b) at said first and second
end and is placed in said printer so that it deviates from
parallelism with said second roller (15)
and - said belt (14) contacts a guiding means (18), placed between said at least two rollers, for creating a bulge, d, in said belt, extending towards said ink ejecting means (11).
Fig 1a. shows schematically a belt moving over two rollers and
with a guiding means creating a bulge in the belt.
Fig 1b shows an enlarged portion (circle B) of the guiding
means, showing the angle over which the belt forms an arc.
Fig 2. shows schematically a belt and a guiding means
comprising two rollers.
Fig 3 shows schematically the placement of two rollers, one
with a flange and not being parallel with each other.
In an ink jet printer with a belt for transporting an image
receiving substrate there can be different undesired movements :
In a monochrome printer, the problem of misregistering is less
important and it may be sufficient to have an high quality printer
when the "throw distance" is kept constant. In a multicolour
printer, using a short belt, it may be that the undesired vertical
movement does not exist and that only means for avoiding undesired
lateral movement of the belt are necessary. In a multicolour
printer using a longer belt it may that means have to be
incorporated for avoiding both the vertical movement and the lateral
movement of the belt.
The 'throw-distance' is the distance that the ink has to travel
between the ink application means, for instance an ink-jet nozzle,
and the receiving substrate. When using a belt to transport a
receiving substrate past ink application means, the belt may move
slightly towards or away from the ink application means during the
ink application, due to disturbances in the movement of the belt.
This movement causes the throw-distance to change over time, and
this changing "throw distance" results in lower print quality.
In figure 1 a means to minimise and even avoid the undesired
movement of the belt to and from the printhead, i.e. the vertical
movement is shown. A belt (14), carrying an image receiving
substrate (20) moves in the direction of arrow A over a first and
second roller (13, 15), each of said rollers having an axis (13a,
15a). A guiding means (18) is placed at the location where ink is
applied onto the receiving substrate (20) in such a way that the
belt passes between the guiding means and an ink ejection means (11)
(further on indicated by the wording "printhead"). The guiding
means (18) is placed so that the belt is pushed towards the
printhead (11) away from the position (14a) it would have when no
guiding means is present. Thus the guiding means creates a bulge,
d, in the belt, elevating the belt from the position the belt would
have without guiding means towards the printhead (11).
The guiding means (18) is preferably designed so as to avoid
sliding contact between the belt and the guiding means, therefore
include any kind of rotatable member. But most preferably it
includes a small roller (with diameter smaller than the diameter of
the rollers (13, 15)), with an axis substantially parallel to the
axis of rollers (13, 15) in Fig. la. When the guiding means (18) is
designed as a single roller, it may guide the belt over convex arc
covering an angle, β, between 0 and 90 °, both limits included. It
is preferred that it guides the belt over a small convex arc
covering an angle of e.g. 1° to 5°, or even smaller than 1°. In a
very preferred embodiment, said angle β is such that 15" ≤ β ≤ 5 °.
This angle is shown in figure 1b (an enlargement of part of figure
la, the numericals in figure 1b have the same meaning as those in
figure 1a).
The guiding means used in this invention can very beneficially
be designed to incorporate at least two rollers that are placed
quite close together so that on top of the two rollers the belt is
kept in a straight line. When then the printhead is placed above
the guiding means, a printhead with several rows of nozzles can be
accommodated above the guiding means and the throw distance for each
of the rows of nozzles is kept constant, since the belt and the
image receiving substrate on it are in a straight line under the
rows of nozzles. Such guiding means are shown in figure 2, wherein
a portion of a full colour printer, incorporating a belt (14) and
guiding means (18a, 18b, 18c and 18d) is shown. The belt (14)
passes over guiding means (18a, 18b, 18c and 18d) in the direction
of arrow A. Each of the guiding means comprises two rollers
((21a, 22a),(21b, 22b), (21c, 22c), (21d, 22d)), said rollers having
a radius R1 and R2. In the figure 2 the radii of the rollers are
only shown for guiding means 18a. The rollers in the guiding means
are coupled to each other by a coupling means (23a, 23b, 23c and
23d) said coupling means being connected to a support (25a, 25b, 25c
and 25d) so as to be movable around a connection means (24a, 24b,
24c and 24d). The supports (25a, 25b, 25c and 25d) are placed on a
frame (26) in the printer so as to keep the belt (14) tensioned by
each of the guiding means (18a, 18b, 18c and 18d) and to create 4
straight portions in the belt . Over each of said straight portions
of the belt a printhead (lla, llb, 11c and 11d) is positioned so
that the nozzle plate of the printhead, having one or more arrays of
nozzles, is parallel to each of said straight portions of the belt.
The rollers (21a, 22a, 21b, 22b, 21c, 22c, 21d, 22d) in the guiding
means ((18a, 18b, 18c and 18d) can have a different or an equal
diameter depending on the needs of the design of the printer. In
each of the guiding means, the diameter of the rollers and the
distance between the axis of the two rollers (18a) is adapted so as
to have a good compromise between the length of the straight
portion of the belt between points P1 and P2, the risk that the belt
gets a vertical movement in that straight portion and the extension
of the rows of nozzles in the nozzle plate. Preferably the distance
between the two axis is larger than (R1 + R2) and smaller than 2
times (R1 + R2).
Preferably, means are provided to tighten the belt and to
ensure that the belt contacts the guiding means (18). In a first
embodiment, the tightening means are vacuum applicators; a first
vacuum applicator is located downstream and adjacent to the guiding
means and a second vacuum applicator is located upstream and
adjacent to the guiding means; the forces exerted by both vacuum
applicators on the belt tighten the belt against the guiding means.
In a second embodiment, the tightening means may be located anywhere
along the belt and provide an adequate belt tension in the complete
belt, while the guiding means have protruding positions as shown in
figure 1a and 2. This second embodiment may be combined with the
first one, i.e. vacuum applicators may be used to tighten the belt
in the second embodiment.
The means according to this invention for avoiding vertical
movement of the belt offer several advantages :
In an ink jet printer , using a belt for transporting the image
receiving substrate to the printhead(s), it is not only necessary to
keep the throw distance constant, but also a good registering of
colour selection of the image to be printed on the receiving
substrate has to be achieved. This registering can be compromised
by lateral movement of the belt.
It was found that when one of the rollers for moving the belt
has at one end of the roller a flange and is placed in said printer
so that it is not parallel with the other roller(s) for moving the
belt, then the belt is always forced against the flange when the
roller deviates from the parallelism over a well chosen angle α. By
forcing the belt against the flange, the belt is kept moving without
undesired lateral movement. Although the roller may have flanges at
both ends (as shown in figure 3) and more than one roller may have
one or two flanges, it is sufficient for avoiding undesired lateral
movement of the belt that one roller has one flange, since it is
possible by making a judicious choice of the angle α to force the
belt against the single flange. When more than one roller has
flanges it is beneficial in the construction of an ink jet printer
of this invention to make sure that the belt is only forced against
one of the flanges. The size of the angle α is chosen so as to
force the belt against the flange for avoiding lateral movement of
the belt and so as to avoid too much friction of the belt against
that flange. The sign of the angle α can be positive as well as
negative and determines which flange is touched by the belt.
Further on in this text when the size of angle α is mentioned, it is
mentioned without its sign as its absolute value, |α|.
In figure 3 this is schematically illustrated. A belt (14) -
for sake of clarity shown as being transparent - moves in direction
of arrow A over two rollers (13, 15) with axis (13a, 15a). A first
roller (13) has flanges (13b) a both ends and is placed so as to be
not parallel with the second roller (15). The line 13c shows the
position of the first roller when it would be placed parallel. The
first roller deviates from the parallelism with the second one over
an angle α, chosen such that 15" ≤ |α| ≤ 5 °. Preferably α is
chosen such that 15" ≤ |α| ≤ 2 °. The flanges (13b) on the first
roller can be separate from the roller and simply clipped over the
roller, or can be an integral part of the roller, when the roller is
machined so as to have flanges incorporated directly. The form and
height of the flanges is dictated by the belt, the tension on the
belt, etc. and can easily be adapted to fulfil their purpose :
forcing the belt against one of flanges and thus keeping it moving
in the direction of arrow A, without undesired lateral movement.
As explained above it may be necessary in some printers to
combine the means according to this invention for avoiding the
undesired vertical movement with the means according to this
invention for avoiding the undesired lateral movement of the belt.
Therefore this invention incorporates an ink jet printer
comprising
- said first roller (13) has a flange (13b) at said first end and is placed in said printer so that it deviates from parallelism with said second roller (15) over an angle α chosen so that said belt is forced against said flange and
- said belt (14) contacts a guiding means (18a), placed between said at least two rollers, for creating a bulge, d, in said belt.
Claims (9)
- An ink jet printer comprisingcharacterised in thatan ink ejecting means (11),a belt (14) for passing a receiving substrate (20) near said ink ejecting means anda first and a second roller (13, 15) for moving said belt (14) in the sense of arrow A, each of said rollers having a first and a second end and an axis (13a, 15a),
said belt (14) contacts a guiding means (18), placed between said first and second roller, for creating a bulge, d, in said belt (14), extending towards said ink ejecting means (11). - An ink jet printer according to claim 1, wherein said guiding means (18) is a single roller.
- An ink jet printer according to claim 1 or 2, wherein said guiding means (18) guides said belt (14) over a convex arc covering an angle β chosen so that 15" ≤ β ≤ 5°.
- An ink jet printer according to claim 1, wherein said guiding means (18a) comprises at least two rollers (21a, 22a) coupled to each other by a coupling means (23a) said coupling means being connected to a support (25a) so as to be movable around connection means (24a).
- An ink jet printer according to claim 4, wherein said guiding means (18a) guides said belt over said at least two rollers (21a, 22a), keeping said belt substantially straight when on said at least two rollers.
- An ink jet printer comprisingcharacterised in thatan ink ejecting means (11),a belt (14) for passing a receiving substrate (20) near said ink ejecting means anda first and a second roller (13, 15) for moving said belt (14) in the sense of arrow A, each of said rollers having a first and a second end and an axis (13a, 15a),
said first roller (13) has a flange (13b) at said first end and is placed in said printer so that it deviates from parallelism with said second roller (15) over an angle α chosen so that said belt is forced against said flange. - An ink jet printer according to claim 6, wherein said axis of one said rollers deviates from parallelism over an angle α, said angle α being chosen so that 15" ≤ |α| ≤ 2 °.
- An ink jet printer according to claim 6 or 7, wherein said belt (14) contacts a guiding means (18a), placed between said at least two rollers, for creating a bulge, d, in said belt.
- An ink jet printer according to claim 8, wherein said guiding means (18) comprises at least two rollers (21a, 22a) coupled to each other by a coupling means (23a) said coupling means being connected to a support (25a) so as to be movable around connection means (24a).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01000014A EP1164027B1 (en) | 2000-02-23 | 2001-02-13 | Ink jet printer with device for avoiding undesirable belt movement |
| EP07101580A EP1780028B1 (en) | 2000-02-23 | 2001-02-13 | Ink jet printer with device for avoiding undesirable belt movement |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00200622A EP1127698B1 (en) | 2000-02-23 | 2000-02-23 | Compact printing apparatus and method |
| EP00200622 | 2000-02-23 | ||
| EP01000014A EP1164027B1 (en) | 2000-02-23 | 2001-02-13 | Ink jet printer with device for avoiding undesirable belt movement |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07101580A Division EP1780028B1 (en) | 2000-02-23 | 2001-02-13 | Ink jet printer with device for avoiding undesirable belt movement |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1164027A2 true EP1164027A2 (en) | 2001-12-19 |
| EP1164027A3 EP1164027A3 (en) | 2003-08-13 |
| EP1164027B1 EP1164027B1 (en) | 2007-05-02 |
Family
ID=26071883
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01000014A Expired - Lifetime EP1164027B1 (en) | 2000-02-23 | 2001-02-13 | Ink jet printer with device for avoiding undesirable belt movement |
| EP07101580A Expired - Lifetime EP1780028B1 (en) | 2000-02-23 | 2001-02-13 | Ink jet printer with device for avoiding undesirable belt movement |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07101580A Expired - Lifetime EP1780028B1 (en) | 2000-02-23 | 2001-02-13 | Ink jet printer with device for avoiding undesirable belt movement |
Country Status (1)
| Country | Link |
|---|---|
| EP (2) | EP1164027B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7118103B2 (en) | 2003-04-14 | 2006-10-10 | Heidelberger Druckmaschinen Ag | Device for conveying sheets through a printing machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2032611B1 (en) * | 2022-07-27 | 2024-02-05 | Canon Kk | A printer with a definition roller for an endless belt |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4469026A (en) | 1979-09-20 | 1984-09-04 | Ibm Corporation | Method and apparatus for controlling drying and detaching of printed material |
| US5712672A (en) | 1995-04-03 | 1998-01-27 | Xerox Corporation | Recording sheet transport and effluents removal system |
| WO1999011551A1 (en) | 1997-09-04 | 1999-03-11 | Xaar Technology Limited | Vacuum drums for printing, and duplex printers |
| US5966145A (en) | 1993-03-26 | 1999-10-12 | Canon Kabushiki Kaisha | Ink jet printing on the full width of a printing medium |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1189311A (en) * | 1966-07-04 | 1970-04-22 | Tmm Research Ltd | Textile Yarn or Filament Advancing Roller Arrangement |
| NL8303239A (en) * | 1983-09-21 | 1985-04-16 | Rapistan Van Der Lande Bv | Roller-conveyor track bend - has driving belt guided by rollers with flanges at inside of bend |
| NL192678C (en) * | 1987-03-12 | 1997-12-02 | Rapistan Van Der Lande Bv | Belt conveyor. |
| JP2576508B2 (en) * | 1987-06-11 | 1997-01-29 | 三菱電機株式会社 | Thermal printer |
| US4795154A (en) * | 1987-06-25 | 1989-01-03 | Ideal Loisirs | Continuous slot racing system |
| JP3016924B2 (en) * | 1991-10-02 | 2000-03-06 | キヤノン株式会社 | Recording device |
| JP2750269B2 (en) * | 1993-12-20 | 1998-05-13 | キヤノン株式会社 | Sheet conveying device and sheet sorting and storage device |
| JPH08156353A (en) * | 1994-10-07 | 1996-06-18 | Canon Inc | Printing apparatus |
| US5992994A (en) * | 1996-01-31 | 1999-11-30 | Hewlett-Packard Company | Large inkjet print swath media support system |
-
2001
- 2001-02-13 EP EP01000014A patent/EP1164027B1/en not_active Expired - Lifetime
- 2001-02-13 EP EP07101580A patent/EP1780028B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4469026A (en) | 1979-09-20 | 1984-09-04 | Ibm Corporation | Method and apparatus for controlling drying and detaching of printed material |
| US5966145A (en) | 1993-03-26 | 1999-10-12 | Canon Kabushiki Kaisha | Ink jet printing on the full width of a printing medium |
| US5712672A (en) | 1995-04-03 | 1998-01-27 | Xerox Corporation | Recording sheet transport and effluents removal system |
| WO1999011551A1 (en) | 1997-09-04 | 1999-03-11 | Xaar Technology Limited | Vacuum drums for printing, and duplex printers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7118103B2 (en) | 2003-04-14 | 2006-10-10 | Heidelberger Druckmaschinen Ag | Device for conveying sheets through a printing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1780028A3 (en) | 2007-05-09 |
| EP1780028A2 (en) | 2007-05-02 |
| EP1164027A3 (en) | 2003-08-13 |
| EP1164027B1 (en) | 2007-05-02 |
| EP1780028B1 (en) | 2008-06-04 |
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