US5126767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink tank with dual-member sealing closure
Assignee: Canon Inc
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Filing: 1990-01-16
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Granted: 1992-06-30
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Expires: 2010-01-16
Abstract
Abstract An ink jet recording apparatus includes an ink tank and an ink bladder for containing ink disposed in the tank. An ink path directs ink in the ink bladder outwardly therefrom, and a closure member for closing the ink path comprises at least two sealing materials having different functions. A housing member houses the ink bladder and the closure member, and an ink supply system having a hollow needle supplies ink to a recording head for discharging the ink.
Inventors
- 👤 Naohito Asai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:45
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/1752; B41J2/17523; B41J2/17513
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
114 words
An ink jet recording apparatus comprising: an ink tank; an ink container for containing an ink disposed within said ink tank; an ink outlet for directing the ink in said ink container outwardly therefrom; a closure member for closing said ink outlet, said closure member further comprising; a first elastic member of low gas permeability and having a compression permanent set, and a second elastic member with a compression permanent set lower than that of said first elastic member, wherein said first and second elastic members are disposed in that order from said outlet; and an ink supply system having a path for supplying the ink to a recording head for discharging the ink.
Claim 2
Dependent Claim
114 words
An ink jet recording apparatus comprising: an ink tank; an ink container for containing an ink disposed within said ink tank; an ink outlet for directing the ink in said ink container outwardly therefrom; a closure member for closing said ink outlet, said closure member further comprising; a first elastic member of low gas permeability and having a compression permanent set, and a second elastic member with a compression permanent set lower than that of said first elastic member, wherein said first and second elastic members are disposed in that order from said outlet; and an ink supply system having a path for supplying the ink to a recording head for discharging the ink.
Claim 3
Dependent Claim
21 words
An ink jet recording apparatus according to claim 1, wherein said ink tank is detachable from the ink jet recording apparatus.
Claim 4
Dependent Claim
32 words
An ink tank according to claim 1, wherein said first elastic member is selected from the group of materials consisting of butyl rubber, polychloroprene rubber, nitrile rubber, isobutylene rubber, and polysulfide rubber.
Claim 5
Dependent Claim
40 words
An ink tank according to claim 1, wherein said second elastic member is selected from the group of materials consisting of silicone rubber, urethane rubber, polyethylene chloride, epichlorohydrin rubber, nitrile rubber (N13R), isoprene rubber, butadiene rubber, chloroprene rubber and fluororubber.
Claim 6
Dependent Claim
18 words
An ink tank according to claim 1, wherein said ink container contains the ink in a bladder-like container.
Claim 7
Dependent Claim
22 words
An ink tank according to claim 1, wherein said ink outlet is provided on a leading end of an ink introducing tube.
Claim 8
Dependent Claim
86 words
An ink tank comprising: an ink container for containing an ink therein; an ink outlet for directing the ink in said ink container outwardly therefrom; and a closure member for closing said ink outlet, said closure member further comprising; a first elastic member of low gas permeability and having a compression permanent set, and a second elastic member with a compression permanent set lower than that of said first elastic member, wherein said first and second elastic members are disposed in that order from said outlet.
Claim 9
Dependent Claim
86 words
An ink tank comprising: an ink container for containing an ink therein; an ink outlet for directing the ink in said ink container outwardly therefrom; and a closure member for closing said ink outlet, said closure member further comprising; a first elastic member of low gas permeability and having a compression permanent set, and a second elastic member with a compression permanent set lower than that of said first elastic member, wherein said first and second elastic members are disposed in that order from said outlet.
Claim 10
Dependent Claim
22 words
An ink tank according to claim 7, wherein said ink tank is usable with, and detachable from, an ink jet recording apparatus.
Claim 11
Dependent Claim
32 words
An ink tank according to claim 7, wherein said first elastic member is selected from the group of materials consisting of butyl rubber, polychloroprene rubber, nitrile rubber, isobutylene rubber, and polysulfide rubber.
Claim 12
Dependent Claim
40 words
An ink tank according to claim 7, wherein said second elastic member is selected from the group of materials consisting of silicone rubber, urethane rubber, polyethylene chloride, epichlorohydrin rubber, nitrile rubber (N13R), isoprene rubber, butadiene rubber, chloroprene rubber and fluororubber.
Claim 13
Dependent Claim
19 words
An new ink tank according to claim 7, wherein said ink container contains the ink in a bladder-like container.
Claim 14
Dependent Claim
22 words
An ink tank according to claim 7, wherein said ink outlet is provided on a leading end of an ink introducing tube.
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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) | 1995-06-30 | 1995-12-30 | 1996-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-30 | 1999-12-30 | 2000-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-30 | 2003-12-30 | 2004-06-30 | $7700.00 | Window Closed / Lapsed |