US4461820A
Expired / Lapsed
US
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Amorphous silicon electrophotographic image-forming member having an aluminum oxide coated substrate
Assignee: Canon Inc
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Filing: 1982-02-01
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Granted: 1984-07-24
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Expires: 2002-02-01
Abstract
Abstract An electrophotographic image-forming member comprises (1) a substrate for electrophotography which has a surface coating of an aluminum oxide containing water chemi-structurally and (2) a photoconductive layer which is laid on said surface coating of the substrate and constituted of an amorphous material containing at least one of hydrogen atom and halogen atom in a matrix of silicon atom, said photoconductive layer containing at least one of oyxgen atom, nitrogen atom, and carbon atom.
Inventors
- 👤 Shigeru Shirai
- 👤 Junichiro Kanbe
- 👤 Tadaji Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:46
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08221; G03G5/10; G03G5/102; G03G5/104
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
69 words
A electrophotographic image-forming member comprising (1) a substrate for electrophotography which has a surface coating of an aluminum oxide containing water chemi-structurally and (2) a photoconductive layer which is laid on said substrate, and comprises an amorphous material containing at least one of hydrogen atom and halogen atom in a matrix of silicon atom, said photoconductive layer containing at least one of oxygen atom, nitrogen atom, and carbon atom.
Claim 2
Dependent Claim
69 words
A electrophotographic image-forming member comprising (1) a substrate for electrophotography which has a surface coating of an aluminum oxide containing water chemi-structurally and (2) a photoconductive layer which is laid on said substrate, and comprises an amorphous material containing at least one of hydrogen atom and halogen atom in a matrix of silicon atom, said photoconductive layer containing at least one of oxygen atom, nitrogen atom, and carbon atom.
Claim 3
Dependent Claim
15 words
An electrophotographic image-forming member according to claim 1, wherein said photoconductive layer contains oxygen atoms.
Claim 4
Dependent Claim
23 words
An electrophotographic image-forming member according to claim 2, wherein the oxygen atom content in said photoconductive layer is 0.005 to 20 atomic %.
Claim 5
Dependent Claim
15 words
An electrophotographic image-forming member according to claim 1, wherein said photoconductive layer contains nitrogen atoms.
Claim 6
Dependent Claim
23 words
An electrophotographic image-forming member according to claim 4, wherein the nitrogen atom content in said photoconductive layer is 0.01 to 20 atomic %.
Claim 7
Dependent Claim
15 words
An electrophotographic image-forming member according to claim 1, wherein said photoconductive layer contains carbon atoms.
Claim 8
Dependent Claim
23 words
An electrophotographic image-forming member according to claim 6, wherein the carbon atom content in said photoconductive layer is 0.001 to 20 atomic %.
Claim 9
Dependent Claim
18 words
An electrophotographic image-forming member according to claim 1, wherein said photoconductive layer contains oxygen atoms and nitrogen atoms.
Claim 10
Dependent Claim
18 words
An electrophotographic image-forming member according to claim 1, wherein said photoconductive layer contains oxygen atoms and carbon atoms.
Claim 11
Dependent Claim
18 words
An electrophotographic image-forming member according to claim 1, wherein said photoconductive layer contains nitrogen atoms and carbon atoms.
Claim 12
Dependent Claim
20 words
An electrophotographic image-forming member according to claim 1, wherein said photoconductive layer contains oxygen atoms, nitrogen atoms, and carbon atoms.
Claim 13
Dependent Claim
19 words
An electrophotographic image-forming member according to claim 1, wherein said amorphous material further contains germanium as a constituent atom.
Claim 14
Dependent Claim
19 words
An electrophotographic image-forming member according to claim 1, wherein said photoconductive layer is doped with a conductor type-determining impurity.
Claim 15
Dependent Claim
24 words
An electrophotographic image-forming member according to claim 13, wherein said impurity is an element belonging to the group III A of the periodic table.
Claim 16
Dependent Claim
30 words
An electrophotographic image-forming member according to claim 14, wherein said element belongs to the group III A of the periodic table is selected from B, Al, Ga, In, and Tl.
Claim 17
Dependent Claim
23 words
An electrophotographic image-forming member according to claim 14, wherein said impurity is contained in an amount of up to 3×10 -2 atomic %.
Claim 18
Dependent Claim
24 words
An electrophotographic image-forming member according to claim 13, wherein said impurity is an element belonging to the group V A of the periodic table.
Claim 19
Dependent Claim
30 words
An electrophotographic image-forming member according to claim 17, wherein said element belonging to the group V A of the periodic table is selected from N, P, As, Sb, and Bi.
Claim 20
Dependent Claim
23 words
An electrophotographic image-forming member according to claim 17, wherein said impurity is contained in an amount of up to 5×10 -3 atomic %.
Claim 21
Dependent Claim
22 words
An electrophotographic image-forming member according to claim 1, wherein hydrogen atoms are contained in an amount of 1 to 40 atomic %.
Claim 22
Dependent Claim
22 words
An electrophotographic image-forming member according to claim 1, wherein halogen atoms are contained in an amount of 1 to 40 atomic %.
Claim 23
Dependent Claim
24 words
An electrophotographic image-forming member according to claim 1, wherein the total content of hydrogen atom and halogen atom is 1 to 40 atomic %.
Claim 24
Dependent Claim
19 words
An electrophotographic image-forming member according to claim 1, wherein the thickness of said photoconductive layer is 1 to 100μ.
Claim 25
Dependent Claim
19 words
An electrophotographic image-forming member according to claim 1, wherein the thickness of said surface coating is 0.05 to 10μ.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |