Patent US5677925A successfully refreshed from Google Patents.
US5280299A
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US
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Ink filling method for ink jet recording apparatus
Assignee: Canon Inc
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Filing: 1991-06-21
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Granted: 1994-01-18
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Expires: 2011-06-21
Abstract
Abstract An ink jet head cartridge include an ink container and a porous material contained in the container for retaining the ink. A process for filling the ink container includes the steps of supplying ink in a quantity greater than that which the porous material can retain through a first port and removing through a second port at least a quantity of ink which the porous material cannot retain. The process can also be performed through a single port. At least one of the ports can also be used for communicating with a recording head portion of the cartridge.
Inventors
- 👤 Hideo Saikawa
- 👤 Seiichiro Karita
- 👤 Toshio Kashino
- 👤 Akio Saito
- 👤 Hiroshi Nakagomi
- 👤 Teruo Arashima
- 👤 Makiko Kimura
- 👤 Hiroshi Sugitani
- 👤 Yoshifumi Hattori
- 👤 Masami Ikeda
- 👤 Masaaki Izumida
- 👤 Shigeaki Tanaka
- 👤 Nobuyuki Kuwabara
- 👤 Asao Saito
- 👤 Kazuaki Masuda
- 👤 Tsuyoshi Orikasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:48
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/1752; B41J2/17506; B41J2/17513
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
A process of filling an ink container having a porous material with ink, said process comprising the steps of: providing an ink container having a porous material therein; supplying ink in a quantity greater than that which the porous material can retain by directing the ink into the ink container through a supply port connectable to a recording head; and after said supplying step, closing the supply port and removing from the ink container through a port different from the supply port at least a quantity of ink which the porous material cannot retain when the supply port is closed.
Claim 2
Dependent Claim
100 words
A process of filling an ink container having a porous material with ink, said process comprising the steps of: providing an ink container having a porous material therein; supplying ink in a quantity greater than that which the porous material can retain by directing the ink into the ink container through a supply port connectable to a recording head; and after said supplying step, closing the supply port and removing from the ink container through a port different from the supply port at least a quantity of ink which the porous material cannot retain when the supply port is closed.
Claim 3
Dependent Claim
29 words
A process according to claim 1, wherein said ink container has at least 15% of non-contact area between the porous material and an inside surface of the ink container.
Claim 4
Dependent Claim
18 words
A process according to claim 1, wherein the port different from the supply port comprises an air vent.
Claim 5
Dependent Claim
109 words
A process for filling with ink an ink container having a porous material, said process comprising the steps of: providing an ink container having a porous material therein; supplying ink in a quantity greater than that which the porous material can retain by directing the ink into the ink container through a supply port connectable to a liquid jet recording head; and closing the supply port and removing ink from the ink container through a port different from the supply port to keep a quantity of ink retainable by the porous material at a liquid jet recording head side of the ink container when the supply port is closed.
Claim 6
Dependent Claim
109 words
A process for filling with ink an ink container having a porous material, said process comprising the steps of: providing an ink container having a porous material therein; supplying ink in a quantity greater than that which the porous material can retain by directing the ink into the ink container through a supply port connectable to a liquid jet recording head; and closing the supply port and removing ink from the ink container through a port different from the supply port to keep a quantity of ink retainable by the porous material at a liquid jet recording head side of the ink container when the supply port is closed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-01-17 | 1997-07-19 | 1998-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-17 | 2001-07-19 | 2002-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-17 | 2005-07-19 | 2006-01-18 | $7700.00 | Window Closed / Lapsed |