US4801515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive member having an overcoat layer
Assignee: Minolta Co Ltd
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Filing: 1987-07-02
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Granted: 1989-01-31
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Expires: 2007-07-02
Abstract
Abstract A photosensitive member of the present invention comprises an electrically conductive substrate, a photoconductive layer and an overcoat layer. The photoconductive layer comprises selenium-arsenic alloy layer, or selenium layer and selenium-tellurium layer formed in this order. The overcoat layer comprises amorphous carbon containing hydrogen and contains a kind of atom selected from the group consisting of halogen, oxygen and nitrogen. The photosensitive member of this construction is harmless and excellent in electrophotographic characteristics inclusive of durability and surface hardness.
Inventors
- 👤 Shuji Iino
- 👤 Hideo Hotomi
- 👤 Masanori Fujiwara
- 👤 Isao Doi
- 👤 Izumi Osawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:01
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08285; G03G5/043; G03G5/0433
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
62 words
A photosensitive member comprising: an electrically conductive substrate; a photoconductive layer comprising a selenium-arsenic alloy layer or comprising a selenium layer and a selenium-tellurium layer formed in that order; and an overcoat layer formed on said photoconductive layer and comprising amorphous carbon containing hydrogen, said overcoat layer containing one kind of atom selected from the group consisting of halogen, oxygen and nitrogen.
Claim 2
Dependent Claim
62 words
A photosensitive member comprising: an electrically conductive substrate; a photoconductive layer comprising a selenium-arsenic alloy layer or comprising a selenium layer and a selenium-tellurium layer formed in that order; and an overcoat layer formed on said photoconductive layer and comprising amorphous carbon containing hydrogen, said overcoat layer containing one kind of atom selected from the group consisting of halogen, oxygen and nitrogen.
Claim 3
Dependent Claim
36 words
A photosensitive member as claimed in claim 1 wherein the amount of said hydrogen contained in said overcoat layer is about 30 to 60 atomic % based on the combined amount of hydrogen and carbon therein.
Claim 4
Dependent Claim
35 words
A photosensitive member as claimed in claim 2 wherein halogen atoms are contained in said overcoat layer in an amount of about 0.1 to about 50 atomic % based on all the constituent atoms therein.
Claim 5
Dependent Claim
35 words
A photosensitive member as claimed in claim 2 wherein oxygen atoms are contained in said overcoat layer in an amount of about 0.1 to about 10 atomic % based on all the constituent atoms therein.
Claim 6
Dependent Claim
35 words
A photosensitive member as claimed in claim 2 wherein nitrogen atoms are contained in said overcoat layer in an amount of about 0.1 to about 10 atomic % based on all the constituent atoms therein.
Claim 7
Dependent Claim
18 words
A photosensitive member as claimed in claim 1 wherein said overcoat layer is prepared by organic plasma polymerization.
Claim 8
Dependent Claim
22 words
A photosensitive member as claimed in claim 1 wherein the thickness of the overcoat layer is about 0.2 to about 5 microns.
Claim 9
Dependent Claim
104 words
A photosensitive member comprising: an electrically conductive substrate; a photoconductive layer comprising a selenium-arsenic alloy layer or comprising a selenium layer and a selenium-tellurium layer formed in that order; and an overcoat layer formed on said photoconductive layer and comprising amorphous carbon containing hydrogen in an amount of about 30 to about 60 atomic % based on the combined amount of hydrogen and carbon, said overcoat layer containing about 0.1 to about 50 atomic % of halogen or about 0.1 to about 7 atomic % of oxygen or about 0.1 to about 5 atomic % of nitrogen based on all the constituent atoms therein.
Claim 10
Dependent Claim
104 words
A photosensitive member comprising: an electrically conductive substrate; a photoconductive layer comprising a selenium-arsenic alloy layer or comprising a selenium layer and a selenium-tellurium layer formed in that order; and an overcoat layer formed on said photoconductive layer and comprising amorphous carbon containing hydrogen in an amount of about 30 to about 60 atomic % based on the combined amount of hydrogen and carbon, said overcoat layer containing about 0.1 to about 50 atomic % of halogen or about 0.1 to about 7 atomic % of oxygen or about 0.1 to about 5 atomic % of nitrogen based on all the constituent atoms therein.
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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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |