Patent EP0644577A1 successfully refreshed from Google Patents.
Patent US6316761B1 successfully refreshed from Google Patents.
US5300997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image fixing apparatus
Assignee: Canon Inc
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Filing: 1992-12-11
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Granted: 1994-04-05
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Expires: 2012-12-11
Abstract
Abstract An image fixing apparatus includes a heater; a sheet in slidable contact with the heater; and a back-up member cooperative with the heater to form a nip therebetween such that the sheet is interposed in the nip. An unfixed image on a side of a recording material in contact with the sheet is heated and fixed by heat from the heater through the sheet. The sheet includes (i) a base resin layer in slidable contact with the heater, and (ii) a surface parting layer disposed on the base resin layer. The surface parting layer is thinner than the base resin layer.
Inventors
- 👤 Hiromitsu Hirabayashi
- 👤 Kensaku Kusaka
- 👤 Atsushi Arai
- 👤 Yoshiaki Takayanagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:23
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2021; G03G15/2064; G03G2215/00; G03G2215/20; G03G2215/2003; G03G2215/2009; G03G2215/2016; G03G2215/2035; G03G2215/2038
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
An image fixing apparatus comprising: a heater; a sheet in slidable contact with said heater; a back-up member cooperative with said heater to form a nip therebetween such that said sheet is interposed in the nip, wherein an unfixed image on a side of a recording material in contact with said sheet is heated and fixed by heat from said heater through said sheet; wherein said sheet comprises (i) a base resin layer in slidable contact with said heater, and (ii) a surface parting layer disposed on said base resin layer, said surface parting layer being thinner than said base resin layer.
Claim 2
Dependent Claim
102 words
An image fixing apparatus comprising: a heater; a sheet in slidable contact with said heater; a back-up member cooperative with said heater to form a nip therebetween such that said sheet is interposed in the nip, wherein an unfixed image on a side of a recording material in contact with said sheet is heated and fixed by heat from said heater through said sheet; wherein said sheet comprises (i) a base resin layer in slidable contact with said heater, and (ii) a surface parting layer disposed on said base resin layer, said surface parting layer being thinner than said base resin layer.
Claim 3
Dependent Claim
28 words
An apparatus according to claim 1, wherein said surface parting layer comprises a low resistance material, and said base resin layer is devoid of a low resistance material.
Claim 4
Dependent Claim
22 words
An apparatus according to claim 1, wherein said surface parting layer comprises fluorine resin, and said base resin layer comprises polyimide resin.
Claim 5
Dependent Claim
21 words
An apparatus according to claim 1, further comprising a primer layer bonding said surface parting layer to said base resin layer.
Claim 6
Dependent Claim
18 words
An apparatus according to claim 1, wherein a thickness of said sheet is not more than 50 microns.
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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) | 1997-04-04 | 1997-10-04 | 1998-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-04 | 2001-10-04 | 2002-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-04 | 2005-10-04 | 2006-04-05 | $7700.00 | Window Closed / Lapsed |