US4486521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive member with doped and oxygen containing amorphous silicon layers
Assignee: Canon Inc
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Filing: 1983-03-14
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Granted: 1984-12-04
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Expires: 2003-03-14
Abstract
Abstract A photoconductive member comprises a support for a photoconductive member and an amorphous layer containing an amorphous material comprising silicon atom as a matrix and having photoconductivity, said amorphous layer comprising a first layer region containing oxygen atom as a constituent atom, the oxygen atom being distributed continuously in the direction of the layer thickness and enriched at the support side, and a second layer region containing an atom of the group III of the periodic table as a constituent atom, said first layer region being internally present at the support side in the amorphous layer, and the layer thickness T B of said second layer region and a layer thickness T resulted from subtracting T B from the layer thickness of the amorphous layer satisfying the relation, T B /T≦1.
Inventors
- 👤 Teruo Misumi
- 👤 Kyosuke Ogawa
- 👤 Junichiro Kanbe
- 👤 Keishi Saitoh
- 👤 Yoichi Osato
- 👤 Shigeru Shirai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:47
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08235; G03G5/08242
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
179 words
A photoconductive member which comprises a support for a photoconductive member and an amorphous layer containing an amorphous material comprising silicon atom as a matrix and at least one of a hydrogen and a halogen atom and having photoconductivity, said amorphous layer comprising a first layer region containing oxygen atom as a constituent atom, the oxygen being distributed continuously in the direction of the layer thickness T O , of said first layer region and enriched at the support side, and a second layer region containing an atom of group III of the periodic table as a constituent atom, said first layer region being internally present at the support side in the amorphous layer, and the layer thickness T B of said second layer region is 50 microns or less and a layer thickness T, which is 0.5 microns or more, derived by subtracting T B from the layer thickness of the amorphous layer and satisfying the relation, T B /T≦1, and wherein T B =T O ; T B >T O ; or T O <T B .
Claim 2
Dependent Claim
179 words
A photoconductive member which comprises a support for a photoconductive member and an amorphous layer containing an amorphous material comprising silicon atom as a matrix and at least one of a hydrogen and a halogen atom and having photoconductivity, said amorphous layer comprising a first layer region containing oxygen atom as a constituent atom, the oxygen being distributed continuously in the direction of the layer thickness T O , of said first layer region and enriched at the support side, and a second layer region containing an atom of group III of the periodic table as a constituent atom, said first layer region being internally present at the support side in the amorphous layer, and the layer thickness T B of said second layer region is 50 microns or less and a layer thickness T, which is 0.5 microns or more, derived by subtracting T B from the layer thickness of the amorphous layer and satisfying the relation, T B /T≦1, and wherein T B =T O ; T B >T O ; or T O <T B .
Claim 3
Dependent Claim
28 words
A photoconductive member according to claim 1, wherein the first layer region and the second layer region share in common at least a portion of said mutual region.
Claim 4
Dependent Claim
28 words
A photoconductive member according to claim 1, wherein the first layer region is provided as an end portion layer region at the support side in said amorphous layer.
Claim 5
Dependent Claim
28 words
A photoconductive member according to claim 1, wherein the second layer region is provided as an end portion layer region at the support side in said amorphous layer.
Claim 6
Dependent Claim
21 words
A photoconductive member according to claim 1, wherein the content of hydrogen atoms in said amorphous layer is 1-40 atomic %.
Claim 7
Dependent Claim
21 words
A photoconductive member according to claim 1, wherein the content of halogen atoms in said amorphous layer is 1-40 atomic %.
Claim 8
Dependent Claim
26 words
A photoconductive member according to claim 1, wherein the total content of both hydrogen atoms and halogen atoms in said amorphous layer is 1-40 atomic %.
Claim 9
Dependent Claim
22 words
A photoconductive member according to claim 1, wherein the content of oxygen atoms in the first layer region is 0.001-50 atomic %.
Claim 10
Dependent Claim
31 words
A photoconductive member according to claim 1, wherein the content of atoms belonging to the group III of the periodic table in the second layer region is 0.01-5×10 4 atomic ppm.
Claim 11
Dependent Claim
30 words
A photoconductive member according to claim 1, wherein further an amorphous layer comprising an amorphous material containing silicon atoms and carbon atoms is provided on the amorphous layer having photoconductivity.
Claim 12
Dependent Claim
18 words
A photoconductive member according to claim 10, wherein said amorphous materials containing carbon atoms contain further hydrogen atoms.
Claim 13
Dependent Claim
17 words
A photoconductive member according to claim 10, said amorphous materials containing carbon atoms contain further halogen atoms.
Claim 14
Dependent Claim
21 words
A photoconductive member according to claim 10, said amorphous materials containing carbon atoms contain further both hydrogen atoms and halogen atoms.
Claim 15
Dependent Claim
21 words
A photoconductive member according to claim 10, wherein a layer thickness of said amorphous layer cotaining carbon atoms is 0.003-30 μ.
Claim 16
Dependent Claim
60 words
A photoconductive member according to claim 10, wherein said amorphous material containing silicon atoms and carbon atoms is selected from the group consisting of (1) a-Si a C 1-a , wherein 0.1≦a≦0.99999 (2) a-(Si b C 1-b ) c H 1-c , wherein 0.1≦b≦0.99999 and 0.6≦c≦0.99, (3) a-(Si d C 1-d ) e (X,H) 1-e , wherein 0.1≦d≦0.99999 and 0.8≦e≦0.99.
Claim 17
Dependent Claim
27 words
A photoconductive member according to claim 1 wherein the first layer region has a localized region containing oxygen atoms at a higher concentration on the support side.
References Cited (Backward Citations)
US4361638A
Cited
US4409308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |