US4886724A
Expired / Lapsed
US
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Photosensitive member having an overcoat layer and process for manufacturing the same
Assignee: Minolta Co Ltd
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Filing: 1988-03-07
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Granted: 1989-12-12
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Expires: 2008-03-07
Abstract
Abstract A photosensitive member of the present invention comprises an electrically conductive substrate, a photosensitive layer comprising an organic material and a hydrogen-containing amorphous carbon overcoat layer containing one or more elements selected from the group consisting of chalcogen and elements in Group III, IV and V of the periodic table. The overcoat layer contains hydrogen in an amount of about 30 to about 60 atomic % based on the combined amount of hydrogen atoms and carbon atoms.
Inventors
- 👤 Kenji Masaki
- 👤 Izumi Osawa
- 👤 Masanori Fujiwara
- 👤 Isao Doi
- 👤 Yumiko Takedomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:43
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08285; G03G5/043; G03G5/0436
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
88 words
A photosensitive member comprising: an electrically conductive substrate; a photoconductive layer comprising an organic material and having a charge retaining function and a charge transporting function; and an overcoat layer formed on said photoconductive layer and comprising amorphous carbon containing hydrogen, said overcoat layer containing at least one element selected from the group consisting of chalcogen and elements of Group III, IV and V of the periodic table, said overcoat layer having a thickness of from about 0.01 to about 5 microns and being formed by plasma polymerization.
Claim 2
Dependent Claim
88 words
A photosensitive member comprising: an electrically conductive substrate; a photoconductive layer comprising an organic material and having a charge retaining function and a charge transporting function; and an overcoat layer formed on said photoconductive layer and comprising amorphous carbon containing hydrogen, said overcoat layer containing at least one element selected from the group consisting of chalcogen and elements of Group III, IV and V of the periodic table, said overcoat layer having a thickness of from about 0.01 to about 5 microns and being formed by plasma polymerization.
Claim 3
Dependent Claim
37 words
A photosensitive member as claimed in claim 1 wherein the amount of the hydrogen contained in the overcoat layer is about 30 to about 60 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 the chalcogen contained in the overcoat layer is about 0.1 to about 20 atomic % based on all the constituent atoms therein.
Claim 5
Dependent Claim
35 words
A photosensitive member as claimed in claim 3 wherein the amount of the chalcogen contained in the overcoat layer is preferably about 0.5 to about 20 atomic % based on all the constituent atoms therein.
Claim 6
Dependent Claim
41 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 0.1 to about 20 atomic % based on all the constituent atoms therein.
Claim 7
Dependent Claim
42 words
A photosensitive member as claimed in claim 5 wherein the amount of the elements in Group III of the periodic table contained in the overcoat layer is preferably about 0.5 to about 20 atomic % based on all the constituent atoms therein.
Claim 8
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 0.1 to about 50 atomic % based on all the constituent atoms therein.
Claim 9
Dependent Claim
42 words
A photosensitive member as claimed in claim 7 wherein the amount of the elements in Group IV of the periodic table contained in the overcoat layer is preferably about 1.0 to about 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 V of the periodic table contained in the overcoat layer is about 0.1 to about 20 atomic % based on all the constituent atoms therein.
Claim 11
Dependent Claim
42 words
A photosensitive member as claimed in claim 9 wherein the amount of the elements in Group V of the periodic table contained in the overcoat layer is preferably about 0.5 to about 20 atomic % based on all the constituent atoms therein.
Claim 12
Dependent Claim
169 words
A process for preparing a photosensitive member comprising: a first step of forming a photoconductive layer on an electrically conductive substrate, said photoconductive layer comprising an organic material and having a charge retaining function and a charge transporting function; a second step of heating the substrate on which the photoconductive layer is formed to a temperature not exceeding 100° C.; a third step of introducing gaseous material containing at least chalcogen atoms, elements in Group III, IV and V of the periodic table into a reaction chamber; and a fourth step of applying electric power to cause glow discharge in the reaction chamber to thereby form an overcoat layer on the photoconductive layer, said overcoat layer comprising amorphous carbon containing hydrogen, and said overcoat layer containing at least one element selected from the group consisting of chalcogen and elements in Group III, IV and V of the periodic table, said overcoat layer having a thickness of from about 0.01 to about 5 microns and being formed by plasma polymerization.
Claim 13
Dependent Claim
169 words
A process for preparing a photosensitive member comprising: a first step of forming a photoconductive layer on an electrically conductive substrate, said photoconductive layer comprising an organic material and having a charge retaining function and a charge transporting function; a second step of heating the substrate on which the photoconductive layer is formed to a temperature not exceeding 100° C.; a third step of introducing gaseous material containing at least chalcogen atoms, elements in Group III, IV and V of the periodic table into a reaction chamber; and a fourth step of applying electric power to cause glow discharge in the reaction chamber to thereby form an overcoat layer on the photoconductive layer, said overcoat layer comprising amorphous carbon containing hydrogen, and said overcoat layer containing at least one element selected from the group consisting of chalcogen and elements in Group III, IV and V of the periodic table, said overcoat layer having a thickness of from about 0.01 to about 5 microns and being formed by plasma polymerization.
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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) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |