US4443529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive member having an amorphous silicon photoconductor and a double-layer barrier layer
Assignee: Canon Inc
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Filing: 1982-04-14
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Granted: 1984-04-17
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Expires: 2002-04-14
Abstract
Abstract A photoconductive member comprising a support for photoconductive member, a photoconductive layer constituted of an amorphous material comprising silicon atom as a matrix and a barrier layer between said support and said photoconductive layer, said barrier layer having a double-layer structure of a first barrier layer constituted of an amorphous material comprising silicon atom as a matrix and containing impurities which control the property of conductivity and a second barrier layer constituted of an electrically insulating material different from said amorphous material constituting said first barrier layer.
Inventors
- 👤 Junichiro Kanbe
- 👤 Shigeru Shirai
- 👤 Tadaji Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:33
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/142; G03G5/144; C; C23; C23C; C23C16/00; C23C16/22; C23C16/24; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08221; G03G5/08235; H; H10; H10F; H10F30/00; H10F71/00; H10F71/10; H10F71/103; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
105 words
A photoconductive member comprising a support for photoconductive member, a photoconductive layer constituted of an amorphous material comprising silicon atom as a matrix and a barrier layer between said support and said photoconductive layer, said barrier layer having a double-layer structure layered from the side of said support of a first barrier layer comprising an amorphous silicon material containing (i) hydrogen or halogen and (ii) impurities wherein (i) and (ii) are in amounts sufficient to impede the injection of free carriers from the support and a second barrier layer constituted of an electrically insulating material different from said amorphous material constituting said first barrier layer.
Claim 2
Dependent Claim
105 words
A photoconductive member comprising a support for photoconductive member, a photoconductive layer constituted of an amorphous material comprising silicon atom as a matrix and a barrier layer between said support and said photoconductive layer, said barrier layer having a double-layer structure layered from the side of said support of a first barrier layer comprising an amorphous silicon material containing (i) hydrogen or halogen and (ii) impurities wherein (i) and (ii) are in amounts sufficient to impede the injection of free carriers from the support and a second barrier layer constituted of an electrically insulating material different from said amorphous material constituting said first barrier layer.
Claim 3
Dependent Claim
72 words
A photoconductive member according to claim 1, wherein the barrier layer has the function to prevent injection of free carriers from the side of said support toward the side of said photoconductive layer and permit passage of photocarriers migrating toward the side of said support among the photocarriers generated in said photoconductive layer upon irradiation with an electromagnetic wave, to which said photoconductive layer is sensitive, to the side of said support.
Claim 4
Dependent Claim
25 words
A photoconductive member according to claim 1, wherein the amorphous material constituting the photoconductive layer contains at least one of hydrogen atom and halogen atom.
Claim 5
Dependent Claim
41 words
A photoconductive member according to claim 1, wherein the second barrier layer is constituted of an amorphous material containing at least one selected from the group consisting of carbon atom, nitrogen atom and oxygen atom in the matrix of silicon atom.
Claim 6
Dependent Claim
21 words
A photoconductive member according to claim 4, wherein the amorphous material contains at least one of hydrogen atom and halogen atom.
Claim 7
Dependent Claim
20 words
A photoconductive member according to claim 1, wherein the second barrier layer is constituted of an electrically insulating metal oxide.
Claim 8
Dependent Claim
24 words
A photoconductive member according to claim 1, wherein the content of impurities in the first barrier layer is 30 to 5×10 4 atomic ppm.
Claim 9
Dependent Claim
21 words
A photoconductive member according to claim 1, wherein the first barrier layer has a thickness of 50 Å to 2 μ.
Claim 10
Dependent Claim
21 words
A photoconductive member according to claim 1, wherein the second barrier layer has a thickness of 10 Å to 1.2 μ.
Claim 11
Dependent Claim
14 words
A photoconductive member according to claim 1, wherein the impurity is a p-type impurity.
Claim 12
Dependent Claim
27 words
A photoconductive member according to claim 10, wherein the p-type impurity is an atom selected from the atoms belonging to the Group III of the Periodic table.
Claim 13
Dependent Claim
14 words
A photoconductive member according to claim 1, wherein the impurity is a n-type impurity.
Claim 14
Dependent Claim
27 words
A photoconductive member according to claim 12, wherein the n-type impurity is an atom selected from the atoms belonging to the Group V of the Periodic table.
Claim 15
Dependent Claim
14 words
A photoconductive member according to claim 1 which comprises further a surface barrier layer.
Claim 16
Dependent Claim
22 words
A photoconductive member according to claim 14, wherein the thickness of said surface barrier layer ranges from 30 Å to 5 μ.
Claim 17
Dependent Claim
24 words
A photoconductive member according to claim 14, wherein the surface barrier layer is made from the material to that of the second barrier layer.
Claim 18
Dependent Claim
27 words
A photoconductive member according to claim 1, wherein the photoconductive layer contains at least one member selected from the group consisting of carbon, nitrogen, and oxygen atoms.
Claim 19
Dependent Claim
20 words
A photoconductive member according to claim 17, wherein the content of oxygen atoms ranges from 0.001 to 30 atomic %.
Claim 20
Dependent Claim
20 words
A photoconductive member according to claim 17, wherein the content of nitrogen atoms ranges from 0.001 to 30 atomic %.
Claim 21
Dependent Claim
20 words
A photoconductive member according to claim 17, wherein the content of carbon atoms ranges from 0.001 to 30 atomic %.
Claim 22
Dependent Claim
14 words
A photoconductive member according to claim 1, wherein the photoconductive layer contains hydrogen atoms.
Claim 23
Dependent Claim
20 words
A photoconductive member according to claim 21, wherein the content of hydrogen atoms ranges from 1 to 40 atomic %.
Claim 24
Dependent Claim
20 words
A photoconductive member according to claim 1, wherein the content of halogen atoms ranges from 1 to 40 atomic %.
Claim 25
Dependent Claim
17 words
A photoconductive member according to claim 1, wherein the photoconductive layer contains both hydrogen and halogen atoms.
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) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |