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US4565731A
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US
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Image-forming member for electrophotography
Assignee: Canon Inc
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Filing: 1982-09-15
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Granted: 1986-01-21
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Expires: 2002-09-15
Abstract
Abstract An image-forming member for electro-photography has a photoconductive layer comprising a hydrogenated amorphous semiconductor composed of silicon and/or germanium as a matrix and at least one chemical modifier such as carbon, nitrogen and oxygen contained in the matrix.
Inventors
- 👤 Toshiyuki Komatsu
- 👤 Yutaka Hirai
- 👤 Katsumi Nakagawa
- 👤 Tadaji Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08221; G03G5/08235; G03G5/08292; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y wherein 0.001≦x≦0.3 and 0.01≦y≦0.4, whereby said light-sensitive film exhibits photoconductive characteristics.
Claim 2
Dependent Claim
67 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y wherein 0.001≦x≦0.3 and 0.01≦y≦0.4, whereby said light-sensitive film exhibits photoconductive characteristics.
Claim 3
Dependent Claim
10 words
An article according to claim 1, wherein 0.001≦x≦0.3 and 0.01≦y≦0.4.
Claim 4
Dependent Claim
20 words
An article according to claim 1 wherein said amorphous material has a dark resistivity of at least 10 10 Ω.cm.
Claim 5
Dependent Claim
20 words
An article according to claim 2 wherein said amorphous material has a dark resistivity of at least 10 10 Ω.cm.
Claim 6
Dependent Claim
29 words
An article according to claim 1 wherein the at least one layer which is made of the amorphous photoconductive material is from about 1 to 80 microns in thickness.
Claim 7
Dependent Claim
44 words
An article according to claim 5 wherein said substrate comprises a faceplate having thereon a light-transmitting conducting layer, with at least one photoconductive layer positioned on said light-transmitting conducting layer, and with the amorphous photoconductive material layer adjacent said at least one photoconductive layer.
Claim 8
Dependent Claim
29 words
An article according to claim 1 or claim 5 wherein said amorphous photoconductive material has at least one impurity element incorporated therein for providing a desired conductivity type material.
Claim 9
Dependent Claim
21 words
An article according to claim 2, wherein said amorphous photoconductive material has a dark resistivity of at least 10 10 Ω.cm.
Claim 10
Dependent Claim
26 words
An article according to claim 2, wherein said amorphous photoconductive material has incorporated therein at least one impurity element for providing a desired conductivity type material.
Claim 11
Dependent Claim
74 words
An article according to claim 1, wherein said light-sensitive film is constructed of at least two layers of at least one photoconductive material, with one of said at least two layers made of said amorphous photoconductive material, and with the amorphous photoconductive material layer having a higher resistivity than the other photoconductive layers of said light-sensitive film, whereby the amorphous photoconductive material layer can act to store charge patterns formed in the light-sensitive film.
Claim 12
Dependent Claim
83 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0.001≦x≦0.3 and 0.01≦y≦0.4, with carbon in the amorphous photoconductive material being replaced by germanium at a desired component ratio, whereby said light-sensitive film exhibits photoconductive characteristics.
Claim 13
Dependent Claim
83 words
An article comprising a light-sensitive film constructed of at least a single layer of at least one photoconductive material on a substrate, wherein at least one layer of said at least a single layer is made of an amorphous photoconductive material whose composition is expressed by a formula [Si 1-x C x ] 1-y [H] y where 0.001≦x≦0.3 and 0.01≦y≦0.4, with carbon in the amorphous photoconductive material being replaced by germanium at a desired component ratio, whereby said light-sensitive film exhibits photoconductive characteristics.
Claim 14
Dependent Claim
21 words
An article according to claim 11, wherein said amorphous photoconductive material has a dark resistivity of at least 10 10 Ω.cm.
Claim 15
Dependent Claim
26 words
An article according to claim 11, wherein said amorphous photoconductive material has at least one impurity element incorporated therein for providing a desired conductivity type material.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-01-20 | 1989-07-22 | 1990-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-20 | 1993-07-22 | 1994-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-20 | 1997-07-22 | 1998-01-21 | $7700.00 | Window Closed / Lapsed |