US4770966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic photosensitive material comprising amorphous carbon protective layer containing hydrogen and fluorine
Assignee: Fuji Electric Co Ltd
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Filing: 1987-03-12
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Granted: 1988-09-13
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Expires: 2007-03-12
Abstract
Abstract A photosensitive material comprising a photosensitive layer composed of an amorphous silicon-based material formed on an electrically conductive support, and a surface layer formed on said photosensitive layer, the surface layer being composed of amorphous carbon containing hydrogen and fluorine has improved printing durability and humidity resistance.
Inventors
- 👤 Toyoki Kazama
- 👤 Koichi Aizawa
- 👤 Kenichi Hara
- 👤 Toshiyuki Iijima
- 👤 Yukio Takano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:10
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08235; G03G5/043; G03G5/0433; G03G5/08285
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
An electrophotographic photosensitive material comprising in sequence: (a) a conductive support; (b) a photosensitive layer comprising amorphous silicon; and (c) a surface protective layer comprising amorphous carbon containing 40 to 60 atomic percent hydrogen and 0.1 to 5 atomic percent fluorine.
Claim 2
Dependent Claim
41 words
An electrophotographic photosensitive material comprising in sequence: (a) a conductive support; (b) a photosensitive layer comprising amorphous silicon; and (c) a surface protective layer comprising amorphous carbon containing 40 to 60 atomic percent hydrogen and 0.1 to 5 atomic percent fluorine.
Claim 3
Independent Claim
36 words
A method of improving adhesion of an amorphous carbon layer containing hydrogen to an adjacent silicon layer in an electrophotographic photosensitive material which comprises adding 0.1 to 5 atomic percent fluorine to the amorphous carbon layer.
Claim 4
Independent Claim
36 words
A method of improving adhesion of an amorphous carbon layer containing hydrogen to an adjacent silicon layer in an electrophotographic photosensitive material which comprises adding 0.1 to 5 atomic percent fluorine to the amorphous carbon layer.
References Cited (Backward Citations)
US4664999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |