CA1203426A - Capping device for ink jet nozzle - Google Patents
Capping device for ink jet nozzleInfo
- Publication number
- CA1203426A CA1203426A CA000412633A CA412633A CA1203426A CA 1203426 A CA1203426 A CA 1203426A CA 000412633 A CA000412633 A CA 000412633A CA 412633 A CA412633 A CA 412633A CA 1203426 A CA1203426 A CA 1203426A
- Authority
- CA
- Canada
- Prior art keywords
- ink
- absorbing element
- head
- ink jet
- nozzles
- 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.)
- Expired
Links
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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16505—Caps, spittoons or covers for cleaning or preventing drying out
- B41J2/16508—Caps, spittoons or covers for cleaning or preventing drying out connected with the printer frame
Abstract
ABSTRACT OF THE DISCLOSURE
A capping device is disclosed for capping the front end of an ink jet nozzle, wherein an ink absorbing element is provided in the nozzle capping unit in such a position as to be brought into contact with the front end of the ink jet nozzle, and negative pressure for sucking ink from the nozzle is applied through the absorbing element.
A capping device is disclosed for capping the front end of an ink jet nozzle, wherein an ink absorbing element is provided in the nozzle capping unit in such a position as to be brought into contact with the front end of the ink jet nozzle, and negative pressure for sucking ink from the nozzle is applied through the absorbing element.
Description
z~
The present invention relates to a cappiny device for an ink jet nozzle, and more particularly to such capping device capable of preventing defective printing caused by uneven wetting of the nozzle face at the suction recovery step of no~zle operation.
As already known, ink jet nozzles may be utilized in the printing head of a printing apparatus to emit liquid ink jets towards a printing medium in response to electric signals. When such an ink je-t nozzle is subjected to mechanical shock or a sudden temperature change, air may enter the nozzle to destroy the normal meniscus, thus dis-abling normal ink emission in response to the electric signals. In order to avoid such a non-emitting state, the nozzle is subjected to suction from the front thereof, in order to restore the normal meniscus. However, when the cap used to apply the suction is lifted, ink may locally remain on the front face of the nozzle. This phenomenon is discussed further below.
An object of the present invention is to provide a capping device for an ink nozzle which can avoid ink reten-tion around the front ends of the nozzles when the cap is lifted therefrom.
According to the invention, there is provided a capping device for an ink jet printer comprising means for generating a negative pressure; and means for covering the front end of an ink jet head including ink jet nozzles, said covering means including an ink absorbing element, and an elastic member surrounding said ink absorbing 34~i element and arranged in such a position as to be brought into contact with the ink jet head to tightly seal the front end of the head after said ink absorbing element is brought into contact with the front end of the head when the front end of the head is covered with said covering means, and said ink absorbing element being arranged in such a position as to be brought into contact with the front end of the head and to receive the negative pressure generated by said negative pressure generating means where-by said pressure is applied to the front end of the headthrough said ink absorbing element thereby e~tracting the ink in the nozzles.
Further features of the present invention will become apparent from the following description of a pre-ferred embodiment thereof.
In the drawings:
Fig. 1 is a schematic view of a conventional cappingdevice;
Fig. 2 is a schematic view showing a state when the capping device shown in Fig. 1 is lifted;
Fig. 3 is a schematic view of an ink pool; and Fig. 4 is a schematic view of an embodiment of the present invention.
Figs. 1 to 3 show a printing head 1 positioned on a carriage (not shown) integral with a sub-tank and provided with multiple nozzles 2. ~he outer diameter of each nozzle is in the order of 0.4 mm. In the event of defec-tive printing such as lack of ink emission, a cap 3 moves .~
~3~L~6 toward -the nozzles 2 to tightly cover said nozzles with an elastic member 4. A suction pump 6 is activated in this state to generate a negative pressure in a space 7 through a pipe 5, whereby the ink is extracted from the nozzles into the space 7. Any air lock or foreign mat-ter in the nozzle hindering ink emission is ejected from the nozzle, thus enabling ink emission. However, when the cap is lifted in the direction of the arrow shown in Fig.
The present invention relates to a cappiny device for an ink jet nozzle, and more particularly to such capping device capable of preventing defective printing caused by uneven wetting of the nozzle face at the suction recovery step of no~zle operation.
As already known, ink jet nozzles may be utilized in the printing head of a printing apparatus to emit liquid ink jets towards a printing medium in response to electric signals. When such an ink je-t nozzle is subjected to mechanical shock or a sudden temperature change, air may enter the nozzle to destroy the normal meniscus, thus dis-abling normal ink emission in response to the electric signals. In order to avoid such a non-emitting state, the nozzle is subjected to suction from the front thereof, in order to restore the normal meniscus. However, when the cap used to apply the suction is lifted, ink may locally remain on the front face of the nozzle. This phenomenon is discussed further below.
An object of the present invention is to provide a capping device for an ink nozzle which can avoid ink reten-tion around the front ends of the nozzles when the cap is lifted therefrom.
According to the invention, there is provided a capping device for an ink jet printer comprising means for generating a negative pressure; and means for covering the front end of an ink jet head including ink jet nozzles, said covering means including an ink absorbing element, and an elastic member surrounding said ink absorbing 34~i element and arranged in such a position as to be brought into contact with the ink jet head to tightly seal the front end of the head after said ink absorbing element is brought into contact with the front end of the head when the front end of the head is covered with said covering means, and said ink absorbing element being arranged in such a position as to be brought into contact with the front end of the head and to receive the negative pressure generated by said negative pressure generating means where-by said pressure is applied to the front end of the headthrough said ink absorbing element thereby e~tracting the ink in the nozzles.
Further features of the present invention will become apparent from the following description of a pre-ferred embodiment thereof.
In the drawings:
Fig. 1 is a schematic view of a conventional cappingdevice;
Fig. 2 is a schematic view showing a state when the capping device shown in Fig. 1 is lifted;
Fig. 3 is a schematic view of an ink pool; and Fig. 4 is a schematic view of an embodiment of the present invention.
Figs. 1 to 3 show a printing head 1 positioned on a carriage (not shown) integral with a sub-tank and provided with multiple nozzles 2. ~he outer diameter of each nozzle is in the order of 0.4 mm. In the event of defec-tive printing such as lack of ink emission, a cap 3 moves .~
~3~L~6 toward -the nozzles 2 to tightly cover said nozzles with an elastic member 4. A suction pump 6 is activated in this state to generate a negative pressure in a space 7 through a pipe 5, whereby the ink is extracted from the nozzles into the space 7. Any air lock or foreign mat-ter in the nozzle hindering ink emission is ejected from the nozzle, thus enabling ink emission. However, when the cap is lifted in the direction of the arrow shown in Fig.
2, the extracted ink 8 is pulled in opposite directions by the nozzles and by the cap due to surface tension, and a part of the ink remains around the nozzles e~en if the latter are made water-repellent, whereby an ink pool 9 is formed around the nozzles. Ink emission is quite often hindered if such an ink pool exists. Such ink pool is particularly apt to appear in the case of a multiple-nozzle recording head, since the space 7 of the elastic member 4 inevitably has a oval cross section with a reduced ink holdiny ability.
~ig. 4 shows an embodiment of the present invention, wherein an ink absorbing element lO, composed for example of a sponge made principally from polyvinyl alcohol, remains in a wet state for several months when once wetted with ink, since the ink for ink jet printing dries very slowly. The ink absorbing element 10 is supported by an elastic member ...
~ 3~Z6 l 4 positioned in the cap 3 in such position that it can be brought into contact with the multiple nozzles 2. The front face of said ink absorbing element 10 coming into contact with the nozzles protrudes from the front face of a rim 4A of the elastic member 4 surrounding and supporting said absorbing element 10. Consequently, when the cap 4 is moved in a direc-tion A toward the nozzles, the wet ink absorbing element lO is at first brought into c~ntact with the front end of the multi-ple nozzles 2,~and then the rim 4A of the elastic mel~er 4 is brought into contact with the periphery of the multiple nozzles 2 to tightly enclose said nozzles. The ink absorbing elemen~
lO, being wetted with the ink and practically free from air, does not practically press the air into the nozzles when brought into contact therewith. Also when the cap is lifted from the nozzles, the ink absorbing element lO retains the extracted ink because of its stronger absorbing ability than that of the nozzles, thus avoiding the formation of ink pool on the fxont end of the nozzles. Consequently the nozzles are capable of normal ink emissions in response to electric signals immediately after the recovery step by suction.
The ink absorbing element lO, having a three-dimensiona~
porous structuret has a pore diameter larger than the nozzle diameter which is for example in the range of 60 microns.
Such larger pore diameter is selected in order to reduce the danger that a part of the ink absorbing element is pressed into _~_ lZ034;Z6 1 -the nozzles when the element is pressed ayainst the nozzles.
A part of the ink absorbing element eventually squeezed into 1, the nozzle may be torn off from the element and remain in the nozzle, thus disabling the ink emission from the nozzle. In case the pore diameter of the ink absorbing element is larger than the nozzle diameter as explained above, the nozzle apertur~
is most probably covered by a pore of the element, thus reduc-ing the possibility of intrusion of a part of the element into the nozzle. Aiso larger pores of the ink absorbing member provide a larger capacity as the ink reservoir~ Consequently the inX remaining around the nozzles at the lifting of the cap is entirely absorbed into the ink reservoir.
It is to be noted that the present invention is by no means limited to the foregoing embodiment but also is applicabl~
to a capping device not provided with the suction recovery function.
As explained in the foregoing, the present invention enables to retain the extracted ink in an ink absor~ing element when the cap is lifted from the nozzles, thereby avoiding the formation of ink pool on the front end of nozzles and thus ensuring satisfactory ink emission.
~ig. 4 shows an embodiment of the present invention, wherein an ink absorbing element lO, composed for example of a sponge made principally from polyvinyl alcohol, remains in a wet state for several months when once wetted with ink, since the ink for ink jet printing dries very slowly. The ink absorbing element 10 is supported by an elastic member ...
~ 3~Z6 l 4 positioned in the cap 3 in such position that it can be brought into contact with the multiple nozzles 2. The front face of said ink absorbing element 10 coming into contact with the nozzles protrudes from the front face of a rim 4A of the elastic member 4 surrounding and supporting said absorbing element 10. Consequently, when the cap 4 is moved in a direc-tion A toward the nozzles, the wet ink absorbing element lO is at first brought into c~ntact with the front end of the multi-ple nozzles 2,~and then the rim 4A of the elastic mel~er 4 is brought into contact with the periphery of the multiple nozzles 2 to tightly enclose said nozzles. The ink absorbing elemen~
lO, being wetted with the ink and practically free from air, does not practically press the air into the nozzles when brought into contact therewith. Also when the cap is lifted from the nozzles, the ink absorbing element lO retains the extracted ink because of its stronger absorbing ability than that of the nozzles, thus avoiding the formation of ink pool on the fxont end of the nozzles. Consequently the nozzles are capable of normal ink emissions in response to electric signals immediately after the recovery step by suction.
The ink absorbing element lO, having a three-dimensiona~
porous structuret has a pore diameter larger than the nozzle diameter which is for example in the range of 60 microns.
Such larger pore diameter is selected in order to reduce the danger that a part of the ink absorbing element is pressed into _~_ lZ034;Z6 1 -the nozzles when the element is pressed ayainst the nozzles.
A part of the ink absorbing element eventually squeezed into 1, the nozzle may be torn off from the element and remain in the nozzle, thus disabling the ink emission from the nozzle. In case the pore diameter of the ink absorbing element is larger than the nozzle diameter as explained above, the nozzle apertur~
is most probably covered by a pore of the element, thus reduc-ing the possibility of intrusion of a part of the element into the nozzle. Aiso larger pores of the ink absorbing member provide a larger capacity as the ink reservoir~ Consequently the inX remaining around the nozzles at the lifting of the cap is entirely absorbed into the ink reservoir.
It is to be noted that the present invention is by no means limited to the foregoing embodiment but also is applicabl~
to a capping device not provided with the suction recovery function.
As explained in the foregoing, the present invention enables to retain the extracted ink in an ink absor~ing element when the cap is lifted from the nozzles, thereby avoiding the formation of ink pool on the front end of nozzles and thus ensuring satisfactory ink emission.
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A capping device for an ink jet printer comprising:
means for generating a negative pressure; and means for covering the front end of an ink jet head including ink jet nozzles, said covering means including an ink absorbing element, and an elastic member surrounding said ink absorbing element and arranged in such a position as to be brought into contact with the ink jet head to tightly seal the front end of the head after said ink ab-sorbing element is brought into contact with the front end of the head when the front end of the head is covered with said covering means, and said ink absorbing element being arranged in such a position as to be brought into contact with the front end of the head and to receive the negative pressure generated by said negative pressure generating means whereby said pressure is applied to the front end of the head through said ink absorbing element thereby ex-tracting the ink in the nozzles.
means for generating a negative pressure; and means for covering the front end of an ink jet head including ink jet nozzles, said covering means including an ink absorbing element, and an elastic member surrounding said ink absorbing element and arranged in such a position as to be brought into contact with the ink jet head to tightly seal the front end of the head after said ink ab-sorbing element is brought into contact with the front end of the head when the front end of the head is covered with said covering means, and said ink absorbing element being arranged in such a position as to be brought into contact with the front end of the head and to receive the negative pressure generated by said negative pressure generating means whereby said pressure is applied to the front end of the head through said ink absorbing element thereby ex-tracting the ink in the nozzles.
2. A capping device according to Claim 1, wherein said ink absorbing element is composed of a porous sub-stance having a pore diameter larger than the diameter of said nozzle.
3. A capping device according to Claim 1 or 2, wherein said ink absorbing element is composed of a material which swells when wet.
4. A capping device for an ink jet nozzle comprising:
an ink absorbing element composed of a porous sub-stance having a pore diameter larger than the ink exit di-ameter of the ink jet nozzle; and a cap integrally supporting said ink absorbing element.
an ink absorbing element composed of a porous sub-stance having a pore diameter larger than the ink exit di-ameter of the ink jet nozzle; and a cap integrally supporting said ink absorbing element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP160425/1981 | 1981-10-08 | ||
| JP56160425A JPS5862057A (en) | 1981-10-08 | 1981-10-08 | Capping device of ink jet nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1203426A true CA1203426A (en) | 1986-04-22 |
Family
ID=15714643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000412633A Expired CA1203426A (en) | 1981-10-08 | 1982-10-01 | Capping device for ink jet nozzle |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4543589A (en) |
| JP (1) | JPS5862057A (en) |
| CA (1) | CA1203426A (en) |
| DE (1) | DE3237411A1 (en) |
| IT (1) | IT1148616B (en) |
Families Citing this family (65)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4819012A (en) * | 1983-06-10 | 1989-04-04 | Canon Kabushiki Kaisha | Ink-jet printer with cap means |
| JPH0659736B2 (en) * | 1983-06-10 | 1994-08-10 | キヤノン株式会社 | Inkjet recording device |
| JPS6013556A (en) * | 1983-07-05 | 1985-01-24 | Canon Inc | Ink jet recording apparatus |
| JPH0684081B2 (en) * | 1983-09-29 | 1994-10-26 | キヤノン株式会社 | Discharge recovery method |
| JPS6082355A (en) * | 1983-10-12 | 1985-05-10 | Canon Inc | Capping apparatus for inkjet recorder |
| JPH089231B2 (en) * | 1984-01-31 | 1996-01-31 | キヤノン株式会社 | Discharge recovery method |
| JPS60132390U (en) * | 1984-02-14 | 1985-09-04 | 岩崎通信機株式会社 | drawing machine |
| US4695851A (en) * | 1984-02-24 | 1987-09-22 | Canon Kabushiki Kaisha | Ink jet printer |
| US4567494A (en) * | 1984-06-29 | 1986-01-28 | Hewlett-Packard Company | Nozzle cleaning, priming and capping apparatus for thermal ink jet printers |
| DE3432620A1 (en) * | 1984-09-05 | 1986-03-13 | Agfa-Gevaert Ag, 5090 Leverkusen | COVER FOR THE NOZZLES OF A PRESSURE INK PRINT HEAD |
| JPS61118255A (en) * | 1984-11-14 | 1986-06-05 | Canon Inc | Suctional recoverer for ink jet printer |
| JPS61121950A (en) * | 1984-11-19 | 1986-06-09 | Canon Inc | Suction recovery apparatus of ink jet printer |
| US4999643A (en) * | 1984-11-19 | 1991-03-12 | Canon Kabushiki Kaisha | Discharge recovery device and apparatus having suction means and vent means communicating with capping means |
| JP2711835B2 (en) * | 1985-04-05 | 1998-02-10 | キヤノン株式会社 | Ink jet device |
| US6082846A (en) * | 1985-04-08 | 2000-07-04 | Canon Kabushiki Kaisha | Ink jet recording with recovery operation and associated test printing |
| US5202702A (en) * | 1985-04-08 | 1993-04-13 | Canon Kabushiki Kaisha | Ink jet recording apparatus and a method of cleaning a recording head used in the apparatus |
| JPS61273975A (en) * | 1985-05-29 | 1986-12-04 | Toshiba Corp | Recording apparatus |
| DE3522799A1 (en) * | 1985-06-26 | 1987-01-08 | Philips Patentverwaltung | COVER DEVICE FOR PROTECTING THE NOZZLE AREA OF AN INK JET PRINT HEAD |
| DE3524930A1 (en) * | 1985-07-12 | 1987-01-15 | Philips Patentverwaltung | Method and arrangement for the moisture-proof covering of an ink jet print head |
| US4737801A (en) * | 1985-07-24 | 1988-04-12 | Canon Kabushiki Kaisha | Ink supply device and an ink jet recording apparatus having the ink supply device |
| US4748459A (en) * | 1985-07-25 | 1988-05-31 | Canon Kabushiki Kaisha | Ink jet recording apparatus and capping device |
| DE3528926A1 (en) * | 1985-08-12 | 1987-02-19 | Siemens Ag | Method and device for cleaning and closing the nozzles of a print head in an ink jet printing apparatus |
| JPS62119042A (en) * | 1985-11-20 | 1987-05-30 | Toshiba Corp | Recorder |
| JPS62292438A (en) * | 1986-06-13 | 1987-12-19 | Canon Inc | Ink jet recorder |
| JP2522770B2 (en) * | 1986-08-05 | 1996-08-07 | キヤノン株式会社 | Inkjet device |
| DE3752179T2 (en) * | 1986-12-10 | 1998-08-20 | Canon Kk | Recording device and discharge regeneration method |
| JP2626805B2 (en) * | 1987-10-30 | 1997-07-02 | キヤノン株式会社 | Ink jet recording device |
| JP2817924B2 (en) * | 1987-11-17 | 1998-10-30 | キヤノン株式会社 | Ink jet recording device |
| US4965596A (en) * | 1988-02-09 | 1990-10-23 | Canon Kabushiki Kaisha | Ink jet recording apparatus with waste ink distribution paths to plural cartridges |
| GB8810241D0 (en) * | 1988-04-29 | 1988-06-02 | Am Int | Drop-on-demand printhead |
| DE3817754A1 (en) * | 1988-05-20 | 1989-11-23 | Siemens Ag | Device for cleaning and closing the nozzle surface of an ink jet print head |
| US6097407A (en) * | 1988-11-09 | 2000-08-01 | Canon Kabushiki Kaisha | Package for ink jet head |
| US5231416A (en) * | 1988-11-09 | 1993-07-27 | Canon Kabushiki Kaisha | Container for ink jet head and recovering method of ink jet head using container |
| JPH023832U (en) * | 1988-12-16 | 1990-01-11 | ||
| EP0589541B1 (en) * | 1988-12-21 | 1998-11-18 | Canon Kabushiki Kaisha | Ink jet recording apparatus with printhead capping means |
| US5689293A (en) * | 1989-01-23 | 1997-11-18 | Canon Kabushiki Kaisha | Ink jet head capping device |
| DE3917720A1 (en) * | 1989-05-31 | 1989-11-23 | Siemens Ag | Apparatus for cleaning the nozzle face of an ink jet print head |
| US5239316A (en) * | 1989-11-09 | 1993-08-24 | Dataproducts Corporation | Head tend media and system for an ink jet printer |
| DE69026360D1 (en) * | 1989-12-29 | 1996-05-09 | Canon Kk | Suction recovery device and color beam recorder provided with it |
| US5231424A (en) * | 1990-02-26 | 1993-07-27 | Canon Kabushiki Kaisha | Ink jet recording apparatus with efficient circulation recovery |
| JPH04355153A (en) * | 1991-05-31 | 1992-12-09 | Canon Inc | Ink jet recording apparatus |
| US5117244A (en) * | 1991-09-23 | 1992-05-26 | Xerox Corporation | Nozzle capping device for an ink jet printhead |
| US6170945B1 (en) * | 1992-08-25 | 2001-01-09 | Canon Kabushiki Kaisha | Ink jet recording apparatus with cartridge storage |
| JP2593616B2 (en) * | 1992-09-28 | 1997-03-26 | キヤノン株式会社 | Ink jet recording device |
| EP0630754B1 (en) * | 1993-06-25 | 1999-03-24 | Canon Kabushiki Kaisha | Ink jet recording apparatus |
| US5559539A (en) * | 1993-10-12 | 1996-09-24 | Dataproducts Corporation | Ink jet recording apparatus having self aligning print head cleaning system and method of operating the print head cleaning system |
| US5682186A (en) * | 1994-03-10 | 1997-10-28 | Hewlett-Packard Company | Protective capping apparatus for an ink-jet pen |
| SE9402605D0 (en) * | 1994-07-29 | 1994-07-29 | Jaerfaella Icc Ab | print Events |
| US5635965A (en) * | 1995-01-31 | 1997-06-03 | Hewlett-Packard Company | Wet capping system for inkjet printheads |
| DE19522595C2 (en) * | 1995-06-19 | 1998-06-04 | Francotyp Postalia Gmbh | Arrangement for an electronic hand franking machine with a spring-loaded chassis frame |
| DE19522600C2 (en) * | 1995-06-19 | 1998-06-04 | Francotyp Postalia Gmbh | Arrangement for an electronic hand franking machine with ink print head and cleaning part |
| DE69631741T2 (en) * | 1995-07-31 | 2005-03-17 | Hewlett-Packard Co. (N.D.Ges.D.Staates Delaware), Palo Alto | Repair station with translatory movement for color print heads |
| US5980018A (en) * | 1995-07-31 | 1999-11-09 | Hewlett-Packard Company | Translational service station system for inkjet printheads |
| US6328412B1 (en) | 1995-07-31 | 2001-12-11 | Hewlett-Packard Company | Integrated translational service station for inkjet printheads |
| AU1533497A (en) * | 1996-08-15 | 1998-03-06 | Minnesota Mining And Manufacturing Company | Service station for ink jet printers |
| US5956053A (en) | 1996-10-31 | 1999-09-21 | Hewlett-Packard Company | Dual seal capping system for inkjet printheads |
| JP2000103072A (en) * | 1998-09-29 | 2000-04-11 | Canon Inc | Recovery apparatus for ink-jet recording apparatus |
| AUPQ056099A0 (en) * | 1999-05-25 | 1999-06-17 | Silverbrook Research Pty Ltd | A method and apparatus (pprint01) |
| JP2002029070A (en) * | 2000-07-17 | 2002-01-29 | Canon Inc | Cap for ink jet recording apparatus and ink jet recording apparatus |
| JP4136741B2 (en) * | 2003-03-19 | 2008-08-20 | キヤノン株式会社 | Drug delivery device |
| JP4947257B2 (en) * | 2005-10-13 | 2012-06-06 | ブラザー工業株式会社 | Inkjet head packaging structure |
| JP4735193B2 (en) * | 2005-10-31 | 2011-07-27 | ブラザー工業株式会社 | Inkjet recording device |
| JP4758775B2 (en) * | 2006-01-25 | 2011-08-31 | セイコーエプソン株式会社 | Liquid ejecting apparatus and cap apparatus |
| JP4265639B2 (en) * | 2006-09-26 | 2009-05-20 | セイコーエプソン株式会社 | Liquid ejector |
| US8172360B2 (en) * | 2008-02-27 | 2012-05-08 | Hewlett-Packard Development Company, L.P. | Printhead servicing system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2349239A1 (en) * | 1973-10-01 | 1975-04-03 | Siemens Ag | LIQUID JET RECORDER |
| US4024548A (en) * | 1976-06-07 | 1977-05-17 | International Business Machines Corporation | Liquid absorbing assembly with two porosities |
| US4223322A (en) * | 1977-12-08 | 1980-09-16 | Olympia Werke Ag | Maintaining the nozzle surface of an ink writing head |
| DE2754630C3 (en) * | 1977-12-08 | 1981-02-19 | Olympia Werke Ag, 2940 Wilhelmshaven | Method and medium for cleaning the nozzle surface on an ink recording head |
| DE2929742A1 (en) * | 1979-07-23 | 1981-02-19 | Olympia Werke Ag | Suction cap for ink jet printer head - has spring loaded cap that is actuated to apply suction to print head nozzles |
| DE3051198C2 (en) * | 1979-10-23 | 1996-11-14 | Canon Kk | Cover and suction device for inkjet pens |
| US4383263A (en) * | 1980-05-20 | 1983-05-10 | Canon Kabushiki Kaisha | Liquid ejecting apparatus having a suction mechanism |
| US4340897A (en) * | 1981-07-29 | 1982-07-20 | Pitney Bowes Inc. | Cleaning device for writing heads used in ink jet recorders and printers |
-
1981
- 1981-10-08 JP JP56160425A patent/JPS5862057A/en active Granted
-
1982
- 1982-09-30 US US06/429,452 patent/US4543589A/en not_active Expired - Lifetime
- 1982-10-01 CA CA000412633A patent/CA1203426A/en not_active Expired
- 1982-10-08 DE DE19823237411 patent/DE3237411A1/en active Granted
- 1982-10-08 IT IT49238/82A patent/IT1148616B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5862057A (en) | 1983-04-13 |
| DE3237411A1 (en) | 1983-04-28 |
| IT8249238A0 (en) | 1982-10-08 |
| DE3237411C2 (en) | 1988-01-28 |
| IT1148616B (en) | 1986-12-03 |
| JPH0343066B2 (en) | 1991-07-01 |
| US4543589A (en) | 1985-09-24 |
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