US4994337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive member having an overcoat layer
Assignee: Minolta Co Ltd
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Filing: 1988-06-16
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Granted: 1991-02-19
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Expires: 2008-06-16
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 atoms, halogen atoms and at least one element selected from the group consisting of chalcogen, oxygen, nitrogen and elements in Group III and IV of the periodic table. The photosensitive member of this construction is harmless and excellent in electrophotographic characteristics inclusive of durability and surface hardness.
Inventors
- 👤 Kenji Masaki
- 👤 Izumi Osawa
- 👤 Isao Doi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G5/14704; G03G5/02; G03G5/04; G03G5/043; G03G5/0433; G03G5/08; G03G5/082; G03G5/08285
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
A photosensitive member comprising: an electrically conductive substrate; a photoconductive layer for retaining and transporting charges, said photoconductive layer comprising a selenium-arsenic alloy layer or comprising a selenium layer and selenium-tellurium layer formed in this order; and an overcoat layer formed on said photoconductive layer and comprising amorphous carbon containing hydrogen, said overcoat layer containing halogen atoms and at least one element selected from the group consisting of chalcogen, oxygen, nitrogen and elements in Group III and IV of the periodic table.
Claim 2
Dependent Claim
82 words
A photosensitive member comprising: an electrically conductive substrate; a photoconductive layer for retaining and transporting charges, said photoconductive layer comprising a selenium-arsenic alloy layer or comprising a selenium layer and selenium-tellurium layer formed in this order; and an overcoat layer formed on said photoconductive layer and comprising amorphous carbon containing hydrogen, said overcoat layer containing halogen atoms and at least one element selected from the group consisting of chalcogen, oxygen, nitrogen and elements in Group III and IV of the periodic table.
Claim 3
Dependent Claim
36 words
A photosensitive member as claimed in claim 1 wherein the amount of the hydrogen contained in the overcoat layer is about 5 to 50 atomic % based on the combined amount of hydrogen and carbon therein.
Claim 4
Dependent Claim
34 words
A photosensitive member as claimed in claim 1 wherein the amount of halogen atoms contained in the overcoat layer is about 0.01 to about 50 atomic % based on all the constituent atom therein.
Claim 5
Dependent Claim
35 words
A photosensitive member as claimed in claim 3 wherein the amount of halogen atoms contained in the overcoat layer is preferably about 0.1 to about 10 atomic % based on all the constituent atoms therein.
Claim 6
Dependent Claim
34 words
A photosensitive member as claimed in claim 1 wherein the amount of the chalcogen contained in the overcoat layer is about 0.01 to about 20 atomic % based on all the constituent atoms therein.
Claim 7
Dependent Claim
34 words
A photosensitive member as claimed in claim 1 wherein the amount of the oxygen contained in the overcoat layer is about 0.01 to about 20 atomic % based on all the constituent atoms therein.
Claim 8
Dependent Claim
34 words
A photosensitive member as claimed in claim 1 wherein the amount of the nitrogen contained in the overcoat layer is about 0.01 to about 20 atomic % based on all the constituent atoms therein.
Claim 9
Dependent Claim
40 words
A photosensitive member as claimed in claim 1 wherein the amount of the elements in Group III of the periodic table contained in the overcoat layer is about 0.01 to 20 atomic % based on all the constituent atoms therein.
Claim 10
Dependent Claim
41 words
A photosensitive member as claimed in claim 1 wherein the amount of the elements in Group IV of the periodic table contained in the overcoat layer is about 0.01 to about 40 atomic % based on all the constituent atoms therein.
Claim 11
Dependent Claim
18 words
A photosensitive member as claimed in claim 1 wherein said overcoat layer is prepared by organic plasma polymerization.
Claim 12
Dependent Claim
22 words
A photosensitive member as claimed in claim 1 wherein the thickness of the overcoat layer is about 0.01 to about 5 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) | 1994-02-18 | 1994-08-20 | 1995-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-18 | 1998-08-20 | 1999-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-18 | 2002-08-20 | 2003-02-19 | $7700.00 | Window Closed / Lapsed |