Patent US4582769A successfully refreshed from Google Patents.
US4582769A
Expired / Lapsed
US
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Electrophotographic element with amorphous Si(C) overlayer
Assignee: Fujifilm Holdings Corp
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Filing: 1984-04-04
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Granted: 1986-04-15
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Expires: 2004-04-04
Abstract
Abstract An electrophotographic photosensitive material comprising an electrically conductive support and a photoconductive layer of amorphous silicon containing a silicon atom and a hydrogen atom and/or a halogen atom provided said support, which comprises a low-photoconductive overcoat layer of amorphous silicon containing a carbon atom in a ratio of 5 to 35 atomic % on said photoconductive layer.
Inventors
- 👤 Keishiro Kido
- 👤 Kazuhiro Kawajiri
- 👤 Hiroshi Sunagawa
- 👤 Hiroshi Tamura
- 👤 Mitsuo Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:32
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08221
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
59 words
An electrophotographic photosensitive material comprising an electrically conductive support and a photoconductive layer of amorphous silicon containing a silicon atom and a hydrogen atom and/or a halogen atom provided on said support, and further comprising a low-photoconductive overcoat layer of amorphous silicon containing a carbon atom in a ratio of 5 to 35 atomic % on said photoconductive layer.
Claim 2
Dependent Claim
59 words
An electrophotographic photosensitive material comprising an electrically conductive support and a photoconductive layer of amorphous silicon containing a silicon atom and a hydrogen atom and/or a halogen atom provided on said support, and further comprising a low-photoconductive overcoat layer of amorphous silicon containing a carbon atom in a ratio of 5 to 35 atomic % on said photoconductive layer.
Claim 3
Dependent Claim
33 words
The electrophotographic photosensitive material as claimed in claim 1, wherein a halogen atom is incorporated in the amorphous silicon of the low-photoconductive overcoat layer in an amount of 1 to 50 atomic %.
Claim 4
Dependent Claim
17 words
The electrophotographic photosensitive material as claimed in claim 2, wherein said halogen atom is a fluorine atom.
Claim 5
Dependent Claim
27 words
The electrophotographic photosensitive material as claimed in any one of claims 1 to 3, wherein the thickness of the low-photoconductive layer ranges from 0.005 to 0.3 μm.
References Cited (Backward Citations)
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Cited
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Cited
JPS57115559A
Cited
US4443529A
Cited
US4465750A
Cited
US4452875A
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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) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |