US5509140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replaceable ink cartridge
Assignee: Canon Inc
•
Filing: 1993-07-21
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Granted: 1996-04-16
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Expires: 2013-07-21
Abstract
Abstract A replaceable ink cartridge, usable with a bubble jet printer, comprises a container formed by front, back, top and bottom walls, and two side walls providing major surfaces of said container, with a partition dividing the container into first and second chambers communicating with each other through an opening formed by the partition proximate to the bottom wall. The first chamber, which is generally sealed from ambient air except through the opening, contains a reservoir of liquid ink, and the second chamber contains a sponge-like material for producing a negative pressure whereby ink is deliverable from the first chamber through the opening to an ink supply outlet in the front wall proximate to the bottom wall. The partition has at least one groove for forming an air flow passage from the second chamber to the first chamber through the opening, thereby permitting introduction of air into the first chamber and flow of liquid ink to the ink supply outlet through the opening. The container is removably mountable in a printer mounting with the bottom wall facing downward and the front wall facing an ink jet print head so that the ink supply outlet is connectable to an ink port of the print head.
Inventors
- 👤 Noribumi Koitabashi
- 👤 Masami Ikeda
- 👤 Sadayuki Sugama
- 👤 Naohito Asai
- 👤 Hiromitsu Hirabayashi
- 👤 Tsutomu Abe
- 👤 Hiroshi Sato
- 👤 Shigeyasu Nagoshi
- 👤 Eiichiro Shimizu
- 👤 Masahiko Higuma
- 👤 Yuji Akiyama
- 👤 Hitoshi Sugimoto
- 👤 Miyuki Matsubara
- 👤 Shinichi Sato
- 👤 Fumihiro Gotoh
- 👤 Masaya Uetsuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/1752; B41J2/17523; B41J2/17506; B41J2/17513; B41J2/17556; B41J2/17566; B41J29/00; B41J29/46; B41J2002/17573; B41J2002/17579
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
408 words
A replaceable ink cartridge for a bubble jet printer having a carriage adapted to scan a recording sheet, an ink jet print head having an ink port for supplying liquid ink thereto and being mounted to the carriage for ejecting liquid ink onto the recording sheet by the action of thermal energy while the carriage scans the recording sheet, and a mounting on the carriage for receiving said replaceable ink cartridge and supporting same for connection to the ink port of the ink jet print head, said replaceable ink cartridge comprising: a container formed by a front wall, back wall, top wall and bottom wall, each of which is elongated, and two side walls providing major surfaces of said container; a partition attached to said side walls and extending from said top wall toward said bottom wall to divide said container into a first chamber and a second chamber communicating with each other through an opening formed by said partition proximate to said bottom wall; said first chamber being defined by said partition and said back wall, top wall, bottom wall and said two side walls of said container and being generally sealed from ambient air except through said opening; said second chamber being defined by said partition and said front wall, top wall, bottom wall and said two side walls of said container and having an air vent for admitting ambient air into said second chamber; said first chamber containing a reservoir of liquid ink; said second chamber having an ink supply outlet in said front wall proximate to said bottom wall for supplying liquid ink to the ink port of the ink jet print head and containing a sponge-like material for producing a negative pressure whereby liquid ink is deliverable from said first chamber through said opening to said ink supply outlet; at least one groove in said partition extending from said opening to a position spaced from said top wall for forming an air flow passage from said second chamber to said first chamber through said opening, thereby permitting introduction of air into said first chamber and flow of liquid ink to said ink supply outlet through said opening; and said container being removably mountable in the bubble jet printer mounting with said bottom wall facing downward and said front wall facing the ink jet print head so that said ink supply outlet is connectable to the ink port of the ink jet print head.
Claim 2
Dependent Claim
408 words
A replaceable ink cartridge for a bubble jet printer having a carriage adapted to scan a recording sheet, an ink jet print head having an ink port for supplying liquid ink thereto and being mounted to the carriage for ejecting liquid ink onto the recording sheet by the action of thermal energy while the carriage scans the recording sheet, and a mounting on the carriage for receiving said replaceable ink cartridge and supporting same for connection to the ink port of the ink jet print head, said replaceable ink cartridge comprising: a container formed by a front wall, back wall, top wall and bottom wall, each of which is elongated, and two side walls providing major surfaces of said container; a partition attached to said side walls and extending from said top wall toward said bottom wall to divide said container into a first chamber and a second chamber communicating with each other through an opening formed by said partition proximate to said bottom wall; said first chamber being defined by said partition and said back wall, top wall, bottom wall and said two side walls of said container and being generally sealed from ambient air except through said opening; said second chamber being defined by said partition and said front wall, top wall, bottom wall and said two side walls of said container and having an air vent for admitting ambient air into said second chamber; said first chamber containing a reservoir of liquid ink; said second chamber having an ink supply outlet in said front wall proximate to said bottom wall for supplying liquid ink to the ink port of the ink jet print head and containing a sponge-like material for producing a negative pressure whereby liquid ink is deliverable from said first chamber through said opening to said ink supply outlet; at least one groove in said partition extending from said opening to a position spaced from said top wall for forming an air flow passage from said second chamber to said first chamber through said opening, thereby permitting introduction of air into said first chamber and flow of liquid ink to said ink supply outlet through said opening; and said container being removably mountable in the bubble jet printer mounting with said bottom wall facing downward and said front wall facing the ink jet print head so that said ink supply outlet is connectable to the ink port of the ink jet print head.
Claim 3
Dependent Claim
22 words
A replaceable ink cartridge as in claim 1, wherein said groove introduces ambient air to reduce negative pressure in said first chamber.
Claim 4
Dependent Claim
19 words
A replaceable ink cartridge as in claim 1 or 2, wherein said sponge-like material is an ink absorbing material.
Claim 5
Dependent Claim
16 words
A replaceable ink cartridge as in claim 3, wherein said sponge-like material is a foamed material.
Claim 6
Dependent Claim
34 words
A replaceable ink cartridge as in claim 4, wherein said foamed material is compressed in said second chamber so as to produce a varying negative pressure from said opening to said ink supply outlet.
Claim 7
Dependent Claim
31 words
A replaceable ink cartridge as in claim 3, wherein said liquid ink comprises water, coloring material and water-soluble organic solvent, and has a surface tension of 20 dyne/cm to 55 dyne/cm.
Claim 8
Dependent Claim
18 words
A replaceable ink cartridge as in claim 6, where said liquid ink contains at least one non-ionic surfactant.
Claim 9
Dependent Claim
18 words
A replaceable ink cartridge as in claim 7, wherein said container is made of at least semitransparent plastic.
Claim 10
Dependent Claim
33 words
A replaceable ink cartridge as in claim 8, wherein said air vent is in said front wall and a removable seal member is located over said ink supply outlet and said air vent.
Claim 11
Dependent Claim
20 words
A replaceable ink cartridge as in claim 9, wherein said container is contained in an air-tight sealed package for shipment.
Claim 12
Dependent Claim
34 words
A replaceable ink cartridge as in claim 3, wherein said sponge-like material has a predetermined pore size for controlling the delivery of said liquid ink from said ink reservoir to said ink supply outlet.
Claim 13
Dependent Claim
22 words
A replaceable ink cartridge as in claim 1, wherein said groove is formed by projections extending along a surface of said partition.
Claim 14
Dependent Claim
22 words
A replaceable ink cartridge as in claim 1, wherein said groove is formed by a channel in a surface of said partition.
Claim 15
Dependent Claim
20 words
A replaceable ink cartridge as in claim 1, wherein said groove is formed in a recessed portion of said partition.
References Cited (Backward Citations)
US4723129A
Cited
US4740796A
Cited
JPS5456847A
Cited
US4459600A
Cited
US4345262A
Cited
US4463359A
Cited
US4313124A
Cited
JPS5667269A
Cited
JPS5773623A
Cited
US4558333A
Cited
JPS5998857A
Cited
US4509062A
Cited
JPS59123670A
Cited
JPS59138461A
Cited
JPS6071260A
Cited
US4608577A
Cited
EP0139508A2
Cited
US4571599A
Cited
JPS6387242A
Cited
US4771295A
Cited
US5025271A
Cited
US4771295B1
Cited
US4794409A
Cited
EP0320165A1
Cited
JPH02522A
Cited
US5182581A
Cited
JPH0239213A
Cited
US5157421A
Cited
US5095321A
Cited
US4920362A
Cited
EP0373302A1
Cited
US4994824A
Cited
US5103243A
Cited
JPH02214666A
Cited
US5155502A
Cited
EP0378240A2
Cited
US5162817A
Cited
US5119115A
Cited
EP0419192A1
Cited
US5237342A
Cited
US5262802A
Cited
US4994828A
Cited
US5221334A
Cited
EP0486309A2
Cited
EP0488829A2
Cited
EP0490579A2
Cited
EP0493058A2
Cited
EP0529625A2
Cited
US5430471A
Cited
JPH0721423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-16 | 1999-10-16 | 2000-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-16 | 2003-10-16 | 2004-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-16 | 2007-10-16 | 2008-04-16 | $7700.00 | Window Closed / Lapsed |