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US4501807A
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Photoconductive member having an amorphous silicon layer
Assignee: Canon Inc
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Filing: 1983-03-08
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Granted: 1985-02-26
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Expires: 2003-03-08
Abstract
Abstract A photoconductive member comprising a support for photoconductive member and an amorphous layer exhibiting photoconductivity comprising an amorphous material containing silicon atoms as a matrix is characterized in that said amorphous layer has a first layer region containing, as constituent atoms, oxygen atoms in a distribution which is nonuniform and continuous in the direction of the layer thickness and a second layer region containing, as constituent atoms, the atoms (A) belonging to group III or group V of the periodic table in a distribution which is continuous in the direction of the layer thickness, said second layer existing internally beneath the surface of said amorphous layer.
Inventors
- 👤 Shigeru Shirai
- 👤 Kyosuke Ogawa
- 👤 Junichiro Kanbe
- 👤 Keishi Saitoh
- 👤 Yoichi Osato
- 👤 Teruo Misumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:12
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08235; G03G5/08242; G03G5/08221; G03G5/08228
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
127 words
A photoconductive member comprising a support for a photoconductive member, and an amorphous layer exhibiting photoconductivity comprising an amorphous material containing silicon atoms as a matrix, and at least one of hydrogen atoms and halogen atoms, characterized in that said amorphous layer comprises a first layer region extending throughout the entire thickness of said amorphous layer and containing, as constituent atoms, oxygen atoms in a distribution which is nonuniform and continuous in the direction of the layer thickness, and a second layer region containing, as constituent atoms, the atoms (A) belonging to Group III or Group V of the periodic table in a distribution which is continuous in the direction of the layer region thickness, said second layer existing internally beneath the surface of said amorphous layer.
Claim 2
Dependent Claim
127 words
A photoconductive member comprising a support for a photoconductive member, and an amorphous layer exhibiting photoconductivity comprising an amorphous material containing silicon atoms as a matrix, and at least one of hydrogen atoms and halogen atoms, characterized in that said amorphous layer comprises a first layer region extending throughout the entire thickness of said amorphous layer and containing, as constituent atoms, oxygen atoms in a distribution which is nonuniform and continuous in the direction of the layer thickness, and a second layer region containing, as constituent atoms, the atoms (A) belonging to Group III or Group V of the periodic table in a distribution which is continuous in the direction of the layer region thickness, said second layer existing internally beneath the surface of said amorphous layer.
Claim 3
Dependent Claim
21 words
A photoconductive member according to claim 1, wherein the first layer region comprises the whole layer region of the amorphous layer.
Claim 4
Dependent Claim
25 words
A photoconductive member according to claim 1, wherein the state of distribution of the atoms (A) is uniform in the direction of the layer thickness.
Claim 5
Dependent Claim
28 words
A photoconductive member according to claim 1, wherein the oxygen atoms are distributed with greater concentration at the end portion of the layer region on the support side.
Claim 6
Dependent Claim
29 words
A photoconductive member according to claim 1, further comprising a second amorphous layer comprising an amorphous material containing silicon atoms and carbon atoms on said amorphous layer exhibiting photoconductivity.
Claim 7
Dependent Claim
18 words
A photoconductive member according to claim 5, wherein the amorphous layer containing carbon atoms further contains hydrogen atoms.
Claim 8
Dependent Claim
18 words
A photoconductive member according to claim 5, wherein the amorphous layer containing carbon atoms further contains halogen atoms.
Claim 9
Dependent Claim
22 words
A photoconductive member according to claim 5, wherein the amorphous layer containing carbon atoms further contains both hydrogen atoms and halogen atoms.
Claim 10
Dependent Claim
49 words
A photoconductive member according to claim 1, wherein the second layer region contains atoms belonging to the group V of the periodic table, and the other region (B) of the amorphous layer exhibiting photoconductivity excluding the second layer region contains atoms belonging to group III of the periodic table.
Claim 11
Dependent Claim
18 words
A photoconductive member according to claim 1, wherein hydrogen atoms are contained in the amorphous layer exhibiting photoconductivity.
Claim 12
Dependent Claim
23 words
A photoconductive member according to claim 1, wherein the content of hydrogen atoms in the amorphous layer is 1 to 40 atomic %.
Claim 13
Dependent Claim
18 words
A photoconductive member according to claim 1, wherein halogen atoms are contained in the amorphous layer exhibiting photoconductivity.
Claim 14
Dependent Claim
23 words
A photoconductive member according to claim 1, wherein the content of halogen atoms in the amorphous layer is 1 to 40 atomic %.
Claim 15
Dependent Claim
23 words
A photoconductive member according to claim 1, wherein both of hydrogen atoms and halogen atoms are contained in the amorphous layer exhibiting photoconductivity.
Claim 16
Dependent Claim
23 words
A photoconductive member according to claim 1, wherein the total content of hydrogen atoms and halogen atoms is 1 to 40 atomic %.
Claim 17
Dependent Claim
25 words
A photoconductive member according to claim 1, wherein the content of oxygen atoms contained in the first layer region is 0.001 to 30 atomic %.
Claim 18
Dependent Claim
26 words
A photoconductive member according to claim 1, wherein the content of the atoms (A) in the second layer region is 0.01 to 5×10 4 atomic ppm.
Claim 19
Dependent Claim
37 words
A photoconductive member according to claim 14, wherein the relation between the layer thickness T 0 of the amorphous layer and the layer thickness t B of the second layer region is t B /T 0 ≦0.4.
Claim 20
Dependent Claim
21 words
A photoconductive member according to claim 1, wherein the layer thickness of the second layer region is 30 Å to 5μ.
Claim 21
Dependent Claim
20 words
A photoconductive member according to claim 1, wherein the thickness T 0 of the amorphous layer is 1 to 100μ.
Claim 22
Dependent Claim
37 words
A photoconductive member according to claim 1, wherein the first layer region has the maximum value C max of the distributed concentrations of oxygen atoms at the end portion of the layer region on the support side.
Claim 23
Dependent Claim
16 words
A photoconductive member according to claim 21, wherein C max is 10 atomic % or more.
Claim 24
Dependent Claim
32 words
A photoconductive member according to claim 21, wherein C max is provided in the layer region within 5μ thickness from the end portion on the support side of the first layer region.
Claim 25
Dependent Claim
33 words
A photoconductive member according to claim 9, wherein the content of the atoms belonging to group III of the periodic table in the other layer region (B) is 0.001 to 1000 atomic ppm.
Claim 26
Dependent Claim
22 words
A photoconductive member according to claim 5, wherein the layer thickness of the amorphous layer containing carbon atoms is 0.003 to 30μ.
References Cited (Backward Citations)
US4361638A
Cited
US4414319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |