US5557310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink container with ring-shaped ink absorbing member
Assignee: Canon Inc
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Filing: 1994-07-22
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Granted: 1996-09-17
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Expires: 2014-07-22
Abstract
Abstract An ink jet head cartridge includes a recording head for ejecting ink; an ink container for containing the ink to be supplied to the recording head; an ink supply port for supplying the ink from the container to the head; a porous ink absorbing material disposed in the container and having a ring shape with a central opening; and an engaging portion engaging with the central opening wherein the absorbing material has a higher density proximate to the supply port than proximate to the engaging portion.
Inventors
- 👤 Mitsuru Kurata
- 👤 Tokihide Ebata
- 👤 Noribumi Koitabashi
- 👤 Hiromitsu Hirabayashi
- 👤 Hitoshi Sugimoto
- 👤 Haruo Uchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:14
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/1752; B41J2/17513; B41J2/19
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
An ink jet head cartridge comprising: a recording head for ejecting ink; an ink container for containing ink to be supplied to said recording head; an ink supply port for supplying the ink from said ink container to said recording head; a porous or fibrous ink absorbing material disposed in said ink container for retaining the ink therein, wherein said ink absorbing material has a ring shape with a central opening; and an engaging portion engaging with said central opening of said ink absorbing material, wherein said ink absorbing material has a higher density proximate to said ink supply port than proximate to said engaging portion.
Claim 2
Dependent Claim
106 words
An ink jet head cartridge comprising: a recording head for ejecting ink; an ink container for containing ink to be supplied to said recording head; an ink supply port for supplying the ink from said ink container to said recording head; a porous or fibrous ink absorbing material disposed in said ink container for retaining the ink therein, wherein said ink absorbing material has a ring shape with a central opening; and an engaging portion engaging with said central opening of said ink absorbing material, wherein said ink absorbing material has a higher density proximate to said ink supply port than proximate to said engaging portion.
Claim 3
Dependent Claim
12 words
A cartridge according to claim 21, wherein the ring shape is rectangular.
Claim 4
Dependent Claim
18 words
A cartridge according to claim 1, wherein said recording head has an ink ejection element using thermal energy.
Claim 5
Dependent Claim
113 words
An ink jet recording apparatus comprising: an ink jet head cartridge including: an ink container for containing ink to be supplied to said recording head; an ink supply port for supplying the ink from said ink container to said recording head, a porous or fibrous ink absorbing material disposed in said ink container for retaining the ink therein, wherein said ink absorbing material has a ring shape with a central opening, and an engaging portion engaging with said central opening of said ink absorbing material, wherein said ink absorbing material has a higher density proximate to said ink supply port than proximate to said engaging portion; and a carriage for mounting said cartridge.
Claim 6
Dependent Claim
113 words
An ink jet recording apparatus comprising: an ink jet head cartridge including: an ink container for containing ink to be supplied to said recording head; an ink supply port for supplying the ink from said ink container to said recording head, a porous or fibrous ink absorbing material disposed in said ink container for retaining the ink therein, wherein said ink absorbing material has a ring shape with a central opening, and an engaging portion engaging with said central opening of said ink absorbing material, wherein said ink absorbing material has a higher density proximate to said ink supply port than proximate to said engaging portion; and a carriage for mounting said cartridge.
Claim 7
Dependent Claim
97 words
An ink container for containing ink to be supplied to a recording head, the container comprising: an ink supply port for supplying the ink from said ink container to said recording head; a porous or fibrous ink absorbing material disposed in said ink container for retaining the ink therein, wherein said ink absorbing material has a ring shape with a central opening; and an engaging portion engaging with said central opening of said ink absorbing material, wherein said ink absorbing material has a higher density proximate to said ink supply port than proximate to said engaging portion.
Claim 8
Dependent Claim
97 words
An ink container for containing ink to be supplied to a recording head, the container comprising: an ink supply port for supplying the ink from said ink container to said recording head; a porous or fibrous ink absorbing material disposed in said ink container for retaining the ink therein, wherein said ink absorbing material has a ring shape with a central opening; and an engaging portion engaging with said central opening of said ink absorbing material, wherein said ink absorbing material has a higher density proximate to said ink supply port than proximate to said engaging portion.
Claim 9
Dependent Claim
42 words
An ink container according to claim 5, wherein said ink absorbing material has a size larger than an inside of said ink container before being inserted therein, and has a configuration different from a shape of the inside of said ink container.
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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) | 1999-09-17 | 2000-03-18 | 2000-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-17 | 2004-03-18 | 2004-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-17 | 2008-03-18 | 2008-09-17 | $7700.00 | Window Closed / Lapsed |