US4416962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic member having aluminum oxide layer
Assignee: Canon Inc
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Filing: 1981-12-07
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Granted: 1983-11-22
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Expires: 2001-12-07
Abstract
Abstract An electrophotographic image-forming member comprises a substrate for electrophotography and a photoconductive layer which is laid on said substrate and constituted of an amorphous material containing at least one of hydrogen atom or halogen atom in a matrix of silicon atom, said substrate being constituted of aluminum oxide containing chemi-structually water at least on the surface thereof.
Inventors
- 👤 Shigeru Shirai
- 👤 Junichiro Kanbe
- 👤 Tadaji Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:49
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/104; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08221; G03G5/14; G03G5/142
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
56 words
An electrophotographic image-forming member comprising a substrate for electrophotography and a photoconductive layer which is laid on said substrate and comprising an amorphous material containing at least one of hydrogen atom and halogen atom in a matrix of silicon atom, said substrate being constituted of aluminum oxide containing chemi-structually water at least on the surface thereof.
Claim 2
Dependent Claim
56 words
An electrophotographic image-forming member comprising a substrate for electrophotography and a photoconductive layer which is laid on said substrate and comprising an amorphous material containing at least one of hydrogen atom and halogen atom in a matrix of silicon atom, said substrate being constituted of aluminum oxide containing chemi-structually water at least on the surface thereof.
Claim 3
Dependent Claim
19 words
An electrophotographic image-forming member according to claim 1, wherein the amorphous material further contains gerumanium as a constituent atom.
Claim 4
Dependent Claim
22 words
An electrophotographic image-forming member according to claim 1, wherein the content of hydrogen atom in the photoconductive layer ranges 1-40 atomic %.
Claim 5
Dependent Claim
22 words
An electrophotographic image-forming member according to claim 1, wherein the content of halogen atom in the photoconductive layer ranges 1-40 atomic %.
Claim 6
Dependent Claim
22 words
An electrophotographic image-forming member according to claim 1, wherein the total content of hydrogen atom and halogen atom ranges 1-40 atomic %.
Claim 7
Dependent Claim
27 words
An electrophotographic image-forming member according to claim 1, wherein an aluminum oxide containing chemistructually water has the chemical formula of Al 2 O 3 .H 2 O.
Claim 8
Dependent Claim
27 words
An electrophotographic image-forming member according to claim 1, wherein an aluminum oxide containing chemistructurally water has the chemical formula of Al 2 O 3 .3H 2 O.
Claim 9
Dependent Claim
24 words
An electrophotographic image-forming member according to claim 1, wherein the photoconductive layer further contains an element in the Group IIIA of the periodic table.
Claim 10
Dependent Claim
38 words
An electophotographic image-forming member according to claim 8, wherein the element in the Group IIIA of the periodic table is at least one of the elements selected from the group consisting of B, Al, Ga, In and Tl.
Claim 11
Dependent Claim
24 words
An electrophotographic image-forming member according to claim 1, wherein the photoconductive layer further contains an element in the Group VA of the periodic table.
Claim 12
Dependent Claim
38 words
An electrophotographic image-forming member according to claim 10, wherein the element in the Group VA of the periodic table is at least one of the elements selected from the group consisting of N, P, As, Sb and Bi.
Claim 13
Dependent Claim
17 words
An electrophotographic image-forming member according to claim 1, wherein the thickness of the photoconductive layer ranges 1-100μ.
Claim 14
Dependent Claim
51 words
An electrophotographic image-forming member comprising a substrate for electrophotography and a photoconductive layer which is laid on the substrate and comprising an amorphous material containing silicon atom as a matrix, said substrate having a coating of aluminum oxide containing chemistructually water on the surface side in contact with said photoconductive layer.
Claim 15
Dependent Claim
51 words
An electrophotographic image-forming member comprising a substrate for electrophotography and a photoconductive layer which is laid on the substrate and comprising an amorphous material containing silicon atom as a matrix, said substrate having a coating of aluminum oxide containing chemistructually water on the surface side in contact with said photoconductive layer.
Claim 16
Dependent Claim
19 words
An electrophotographic image-forming member according to claim 13, wherein the amorphous material further contains gerumanium as a constituent atom.
Claim 17
Dependent Claim
20 words
An electrophotographic image-forming member according to claim 13, wherein the photoconductive layer further contains hydrogen atom as a constituent atom.
Claim 18
Dependent Claim
22 words
An electrophotographic image-forming member according to claim 15, wherein the content of hydrogen atom in the photoconductive layer ranges 1-40 atomic %.
Claim 19
Dependent Claim
20 words
An electrophotographic image-forming member according to claim 13, wherein the photoconductive layer further contains halogen atoms as a constituent atom.
Claim 20
Dependent Claim
30 words
An electrophotographic image-forming member according to claim 17, wherein the halogen atom is at least one of the elements selected from the group consisting of F, Cl, Br and I.
Claim 21
Dependent Claim
22 words
An electrophotographic image-forming member according to claim 17, wherein the content of halogen atom in the photoconductive layer ranges 1-40 atomic %.
Claim 22
Dependent Claim
19 words
An electrophotographic image-forming member according to claim 13, wherein the photoconductive layer contains both hydrogen atom and halogen atom.
Claim 23
Dependent Claim
22 words
An electrophotographic image-forming member according to claim 20, wherein the total content of hydrogen atom and halogen atom ranges 1-40 atomic %.
Claim 24
Dependent Claim
16 words
An electrophotographic image-forming member according to claim 13, wherein the thickness of the coating ranges 0.05-10μ.
Claim 25
Dependent Claim
24 words
An electrophotographic image-forming member according to claim 13, wherein the photoconductive layer further contains an element in the Group IIIA of the periodic table.
Claim 26
Dependent Claim
38 words
An electrophotographic image-forming member according to claim 23, wherein the element in the Group IIIA of the periodic table is at least one of the elements selected from the group consisting of B, Al, Ga, In and Tl.
Claim 27
Dependent Claim
24 words
An electrophotographic image-forming member according to claim 13, wherein the photoconductive layer further contains an element in the Group VA of the periodic table.
Claim 28
Dependent Claim
30 words
An electrophotographic image-forming member according to claim 25, wherein the element is at least one of the elements selected from the group consisting of N, P, As, Sb and Bi.
Claim 29
Dependent Claim
17 words
An electrophotographic image-forming member according to claim 13, wherein the thickness of the photoconductive layer ranges 1-100μ.
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) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |