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US4471042A
Expired / Lapsed
US
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Image-forming member for electrophotography comprising hydrogenated amorphous matrix of silicon and/or germanium
Assignee: Canon Inc
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Filing: 1979-05-04
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Granted: 1984-09-11
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Expires: 1999-05-04
Abstract
Abstract An image-forming member for electrophotography 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
2026-11-03 05:49
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08235; G03G5/08221; G03G5/08292
Claims Analysis
Total Claims: 119
Claim 1
Independent Claim
86 words
An image forming member for electrophotography which comprises: (a) a substrate and; (b) a photoconductive layer, said photoconductive layer comprising an hydrogenated amorphous semiconductor and a high dark resistance and a high SN ratio for electrophotographic processing, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) oxygen as a chemical modifier.
Claim 2
Dependent Claim
86 words
An image forming member for electrophotography which comprises: (a) a substrate and; (b) a photoconductive layer, said photoconductive layer comprising an hydrogenated amorphous semiconductor and a high dark resistance and a high SN ratio for electrophotographic processing, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) oxygen as a chemical modifier.
Claim 3
Dependent Claim
87 words
An image forming member for electrophotography which comprises: (a) a substrate and; (b) a photoconductive layer, said photoconductive layer comprising an hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) oxygen and at least one member selected from the group consisting of carbon and nitrogen, as a chemical modifier.
Claim 4
Dependent Claim
87 words
An image forming member for electrophotography which comprises: (a) a substrate and; (b) a photoconductive layer, said photoconductive layer comprising an hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) oxygen and at least one member selected from the group consisting of carbon and nitrogen, as a chemical modifier.
Claim 5
Dependent Claim
71 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising an amorphous semiconductor which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an amorphous form in said photoconductive layer and containing hydrogen and oxygen in effective amounts to provide enhanced high dark resistance and a high SN ratio.
Claim 6
Dependent Claim
71 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising an amorphous semiconductor which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an amorphous form in said photoconductive layer and containing hydrogen and oxygen in effective amounts to provide enhanced high dark resistance and a high SN ratio.
Claim 7
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising an amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an amorphous form in said photoconductive layer and containing (i) hydrogen, (ii) oxygen and (iii) at least one member selected from the group consisting of carbon and nitrogen wherein said (i), (ii) and (iii) are present in effective amounts to provide enhanced high dark resistance and a high SN ratio.
Claim 8
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising an amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an amorphous form in said photoconductive layer and containing (i) hydrogen, (ii) oxygen and (iii) at least one member selected from the group consisting of carbon and nitrogen wherein said (i), (ii) and (iii) are present in effective amounts to provide enhanced high dark resistance and a high SN ratio.
Claim 9
Dependent Claim
75 words
An image forming member for electrophotography which comprises: (a) a substrate and; (b) a photoconductive layer, said photoconductive layer comprising an hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a depletion layer in said photoconductive layer.
Claim 10
Dependent Claim
75 words
An image forming member for electrophotography which comprises: (a) a substrate and; (b) a photoconductive layer, said photoconductive layer comprising an hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a depletion layer in said photoconductive layer.
Claim 11
Dependent Claim
93 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) an effective amount of a chemical modifier to provide enhanced high dark resistance and a high SN ratio for electrophotographic processing, said chemical modifier being carbon and oxygen, and; (c) a depletion layer in said photoconductive layer.
Claim 12
Dependent Claim
93 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) an effective amount of a chemical modifier to provide enhanced high dark resistance and a high SN ratio for electrophotographic processing, said chemical modifier being carbon and oxygen, and; (c) a depletion layer in said photoconductive layer.
Claim 13
Dependent Claim
84 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a depletion layer in said photoconductive layer.
Claim 14
Dependent Claim
84 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a depletion layer in said photoconductive layer.
Claim 15
Dependent Claim
84 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) carbon and at least one member selected from the group consisting of oxygen and nitrogen, and; (c) a barrier layer disposed between the substrate and the photoconductive layer.
Claim 16
Dependent Claim
84 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) carbon and at least one member selected from the group consisting of oxygen and nitrogen, and; (c) a barrier layer disposed between the substrate and the photoconductive layer.
Claim 17
Dependent Claim
79 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) from 0.1-30 atomic percent of nitrogen as a chemical modifier, and; (c) a barrier layer disposed between the substrate and the photoconductive layer.
Claim 18
Dependent Claim
79 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) from 0.1-30 atomic percent of nitrogen as a chemical modifier, and; (c) a barrier layer disposed between the substrate and the photoconductive layer.
Claim 19
Dependent Claim
86 words
An image forming member for electrophotography which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a barrier layer in contact with the photoconductive layer.
Claim 20
Dependent Claim
86 words
An image forming member for electrophotography which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a barrier layer in contact with the photoconductive layer.
Claim 21
Dependent Claim
85 words
An image forming member for electrophotography which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an amorphous form in said photoconductive layer; (ii) hydrogen and; (iii) oxygen in effective amounts to provide enhanced high dark resistance and a high SN ratio, and; (c) a barrier layer disposed between the substrate and the photoconductive layer.
Claim 22
Dependent Claim
85 words
An image forming member for electrophotography which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an amorphous form in said photoconductive layer; (ii) hydrogen and; (iii) oxygen in effective amounts to provide enhanced high dark resistance and a high SN ratio, and; (c) a barrier layer disposed between the substrate and the photoconductive layer.
Claim 23
Dependent Claim
83 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a depletion layer in said photoconductive layer, and; (d) a covering layer overlying the photoconductive layer.
Claim 24
Dependent Claim
83 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a depletion layer in said photoconductive layer, and; (d) a covering layer overlying the photoconductive layer.
Claim 25
Dependent Claim
93 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a depletion layer in said photoconductive layer, and; (d) a covering layer overlying the photoconductive layer.
Claim 26
Dependent Claim
93 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a depletion layer in said photoconductive layer, and; (d) a covering layer overlying the photoconductive layer.
Claim 27
Dependent Claim
77 words
An image forming member for electrophotography which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an amorphous form in said photoconductive layer; (ii) oxygen, as a chemical modifier, and; (c) a depletion layer in said photoconductive layer, and; (d) a covering layer overlying the photoconductive layer.
Claim 28
Dependent Claim
77 words
An image forming member for electrophotography which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in an amorphous form in said photoconductive layer; (ii) oxygen, as a chemical modifier, and; (c) a depletion layer in said photoconductive layer, and; (d) a covering layer overlying the photoconductive layer.
Claim 29
Dependent Claim
74 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor; which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a covering layer overlying the photoconductive layer.
Claim 30
Dependent Claim
74 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor; which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a covering layer overlying the photoconductive layer.
Claim 31
Dependent Claim
84 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a covering layer overlying the photoconductive layer.
Claim 32
Dependent Claim
84 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a covering layer overlying the photoconductive layer.
Claim 33
Dependent Claim
71 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) an oxygen chemical modifier, and; (c) an electrically insulating covering layer overlying the photoconductive layer.
Claim 34
Dependent Claim
71 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) an oxygen chemical modifier, and; (c) an electrically insulating covering layer overlying the photoconductive layer.
Claim 35
Dependent Claim
94 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a covering layer overlying the photoconductive layer, said covering layer being comprised of a synthetic resin.
Claim 36
Dependent Claim
94 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a covering layer overlying the photoconductive layer, said covering layer being comprised of a synthetic resin.
Claim 37
Dependent Claim
104 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising an hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a covering layer overlying the photoconductive layer, said covering layer being comprised of a synthetic resin.
Claim 38
Dependent Claim
104 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising an hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a covering layer overlying the photoconductive layer, said covering layer being comprised of a synthetic resin.
Claim 39
Dependent Claim
66 words
An image forming member for electrophotography which comprises: (a) a substrate and; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier.
Claim 40
Dependent Claim
66 words
An image forming member for electrophotography which comprises: (a) a substrate and; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier.
Claim 41
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) carbon and at least one member selected from the group consisting of oxygen and nitrogen, as a chemical modifier, and; (c) a covering layer overlying the photoconductive layer.
Claim 42
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) carbon and at least one member selected from the group consisting of oxygen and nitrogen, as a chemical modifier, and; (c) a covering layer overlying the photoconductive layer.
Claim 43
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a depletion layer in said photoconductive layer; (d) a barrier layer disposed between the substrate and the photoconductive layer; and (e) a covering layer overlying the photoconductive layer.
Claim 44
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a depletion layer in said photoconductive layer; (d) a barrier layer disposed between the substrate and the photoconductive layer; and (e) a covering layer overlying the photoconductive layer.
Claim 45
Dependent Claim
105 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and, (c) a depletion layer in said photoconductive layer; (d) a barrier layer disposed between the substrate and the photoconductive layer; and (e) a covering layer overlying the photoconductive layer.
Claim 46
Dependent Claim
105 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and, (c) a depletion layer in said photoconductive layer; (d) a barrier layer disposed between the substrate and the photoconductive layer; and (e) a covering layer overlying the photoconductive layer.
Claim 47
Dependent Claim
60 words
An image forming member for electrophotography which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) carbon and (iii) nitrogen.
Claim 48
Dependent Claim
60 words
An image forming member for electrophotography which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) carbon and (iii) nitrogen.
Claim 49
Dependent Claim
84 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) carbon and at least one member selected from the group consisting of oxygen and nitrogen, as a chemical modifier, and (c) a covering layer overlying the photoconductive layer.
Claim 50
Dependent Claim
84 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) carbon and at least one member selected from the group consisting of oxygen and nitrogen, as a chemical modifier, and (c) a covering layer overlying the photoconductive layer.
Claim 51
Dependent Claim
87 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a barrier layer disposed between the substrate and the photoconductive layer; and (d) a covering layer overlying the photoconductive layer.
Claim 52
Dependent Claim
87 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer; and (ii) from 0.1-30 atomic percent of a nitrogen chemical modifier, and; (c) a barrier layer disposed between the substrate and the photoconductive layer; and (d) a covering layer overlying the photoconductive layer.
Claim 53
Dependent Claim
97 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a barrier layer disposed between the substrate and the photoconductive layer; and (d) a covering layer overlying the photoconductive layer.
Claim 54
Dependent Claim
97 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen and at least one member selected from the group consisting of carbon and oxygen, as a chemical modifier, and; (c) a barrier layer disposed between the substrate and the photoconductive layer; and (d) a covering layer overlying the photoconductive layer.
Claim 55
Dependent Claim
59 words
A photoconductive member which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) from 0.1-30 atomic percent of nitrogen.
Claim 56
Dependent Claim
59 words
A photoconductive member which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) from 0.1-30 atomic percent of nitrogen.
Claim 57
Dependent Claim
69 words
A photoconductive member which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) oxygen present in effective amounts to provide enhanced high dark resistance and a high SN ratio.
Claim 58
Dependent Claim
69 words
A photoconductive member which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) oxygen present in effective amounts to provide enhanced high dark resistance and a high SN ratio.
Claim 59
Dependent Claim
25 words
An image forming member for electrophotography according to claim 20 wherein said chemical modifier is present in an amount from 0.1 to 20 atomic percent.
Claim 60
Dependent Claim
23 words
An image forming member for electrophotography according to claim 20 wherein said chemical modifier is present in an amount from 0.2-15 atomic percent.
Claim 61
Dependent Claim
26 words
An image forming member for electrophotography according to claims 15, 16, 17 or 21 in which said covering layer is composed of an electrically insulating material.
Claim 62
Dependent Claim
28 words
An image forming member for electrophotography according to claims 7, 15, 16, 17 or 20 further comprising a barrier layer disposed between the substrate and the photoconductive layer.
Claim 63
Dependent Claim
21 words
An image forming member for electrophotography according to claim 20 in which said photographic layer contains 1-40 atomic percent of hydrogen.
Claim 64
Dependent Claim
26 words
An image forming member for electrophotography according to claim 21 or 25 in which said chemical modifier is present in an amount from 0.1-30 atomic percent.
Claim 65
Dependent Claim
18 words
An image forming member for electrophotography according to claims 21 in which said semiconductor comprises carbon and oxygen.
Claim 66
Dependent Claim
18 words
An image forming member for electrophotography according to claim 21 in which said semiconductor comprises carbon and nitrogen.
Claim 67
Dependent Claim
24 words
An image forming member for electrophotography according to claim 21 in which carbon is present in an amount from 0.1 to 30 atomic percent.
Claim 68
Dependent Claim
24 words
An image forming member for electrophotography according to claim 21 in which oxygen is present in an amount from 0.1 to 30 atomic percent.
Claim 69
Dependent Claim
22 words
An image forming member for electrophotography according to claim 21 in which nitrogen is present in an amount from 0.1-30 atomic percent.
Claim 70
Dependent Claim
22 words
An image forming member for electrophotography according to claim 24 in which hydrogen is present in an amount from 1-40 atomic percent.
Claim 71
Dependent Claim
24 words
An image forming member for electrophotography according to claim 24 or 25 in which carbon is present in an amount from 0.1-30 atomic percent.
Claim 72
Dependent Claim
24 words
An image forming member for electrophotography according to claim 24 or 25 in which nitrogen is present in an amount from 0.1-30 atomic percent.
Claim 73
Dependent Claim
22 words
An image forming member for electrophotography according to claim 25 in which oxygen is present in an amount from 0.1-30 atomic percent.
Claim 74
Dependent Claim
21 words
An image forming member for electrophotography according to claim 3 or 20 further comprising a depletion layer in the photoconductive layer.
Claim 75
Dependent Claim
24 words
An image forming member for electrophotography according to claims 22 or 23 in which hydrogen is present in an amount from 1-40 atomic percent.
Claim 76
Dependent Claim
50 words
A photoconductive member which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) germanium as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen in an amount from 0.1-30 atomic percent.
Claim 77
Dependent Claim
50 words
A photoconductive member which comprises: (a) a substrate (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) germanium as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; (ii) nitrogen in an amount from 0.1-30 atomic percent.
Claim 78
Dependent Claim
21 words
A photoconductive member according to claim 47 in which said photoconductive layer comprising hydrogen in an amount from 1-40 atomic percent.
Claim 79
Dependent Claim
18 words
A photoconductive member according to claim 47 in which further comprising a covering layer overlying the photoconductive layer.
Claim 80
Dependent Claim
19 words
A photoconductive member according to claim 49 in which said covering layer being composed of an electrically insulating material.
Claim 81
Dependent Claim
17 words
A photoconductive member according to claim 50 in which said electrically insulating material being an inorganic compound.
Claim 82
Dependent Claim
17 words
A photoconductive member according to claim 50 in which said electrically insulating material being an organic compound.
Claim 83
Dependent Claim
18 words
A photoconductive member according to claim 49 in which said covering layer being composed of a synthetic resin.
Claim 84
Dependent Claim
18 words
A photoconductive member according to claim 47 in which further comprising a depletion layer in the photoconductive layer.
Claim 85
Dependent Claim
22 words
A photoconductive member according to claim 48 in which further comprising a barrier layer disposed between the substrate and the photoconductive layer.
Claim 86
Dependent Claim
19 words
A photoconductive member according to claim 55 in which said barrier layer is composed of an organic insulating compound.
Claim 87
Dependent Claim
19 words
A photoconductive member according to claim 55 in which said barrier layer is composed of an inorganic insulating compound.
Claim 88
Dependent Claim
19 words
A photoconductive member according to claim 57 in which said inorganic insulating compound is Al 2 O 3 .
Claim 89
Dependent Claim
29 words
A photoconductive member according to claim 47 in which said photoconductive layer comprising at least one member selected from the group consisting of B, Al, Ga, In and Tl.
Claim 90
Dependent Claim
28 words
A photoconductive member according to claim 47 in which said photoconductive layer comprising at least one member selected from the group consisting of P, As, Sb and Bi.
Claim 91
Dependent Claim
18 words
A photoconductive member according to claim 47 in which said photoconductive layer further comprising silicon as a matrix.
Claim 92
Dependent Claim
24 words
An image forming member for electrophotography according to any one of claims 3-27 in which the thickness of the photoconductive layer is 1-80 microns.
Claim 93
Dependent Claim
24 words
An image forming member for electrophotography according to any one of claims 3-27 in which the thickness of the photoconductive layer is 5-80 microns.
Claim 94
Dependent Claim
26 words
An image forming member for electrophotography according to any one of claims 15-17 or 21-27 in which the thickness of the covering layer is 0.5-70 microns.
Claim 95
Dependent Claim
29 words
An image forming member for electrophotography according to any one of claims 1-27 in which said photoconductive layer further comprises an element of Group IIIA in the Periodic Table.
Claim 96
Dependent Claim
30 words
An image forming member for electrophotography according to claim 65 in which said element of Group IIIA in the Periodic Table is selected from B, Al, Ga, In and Tl.
Claim 97
Dependent Claim
29 words
An image forming member for electrophotography according to any one of claims 1-27 in which said photoconductive layer further comprises an element of Group VA in the Periodic Table.
Claim 98
Dependent Claim
29 words
An image forming member for electrophotography according to claim 67 in which said element of Group VA in the Periodic Table is selected from P, As, Sb and Bi.
Claim 99
Dependent Claim
25 words
An image forming member for electrophotography according to any one of claims 8-11 in which said barrier layer is composed of an inorganic insulating compound.
Claim 100
Dependent Claim
22 words
An image forming member for electrophotography according to claim 69 in which said inorganic insulating compound is Al 2 O 3 .
Claim 101
Dependent Claim
25 words
An image forming member for electrophotography according to any one of claims 8-11 in which said barrier layer is composed of an inorganic insulating compound.
Claim 102
Dependent Claim
29 words
An image forming member for electrophotography according to any one of claims 1, 2, 18 or 19 which further comprises a barrier layer between said substrate and photoconductive layer.
Claim 103
Dependent Claim
28 words
An image forming member for electrophotography according to any one of claims 1, 2, 18 or 19 in which a depletion layer is formed in said photoconductive layer.
Claim 104
Dependent Claim
23 words
An image forming member for electrophotography according to claim 21 wherein said chemical modifier is present in an amount from 0.1-20 atomic percent.
Claim 105
Dependent Claim
22 words
An image forming member for electrophotography according to claim 21 wherein said chemical modifier is present in amounts of 0.2-15 atomic percent.
Claim 106
Dependent Claim
25 words
An image forming member for electrophotography according to any one of claims 12-17 or 26-28 in which said covering layer is an organic insulating compound.
Claim 107
Dependent Claim
32 words
An image-forming member for electrophotography according to any one of claims 1 or 2 further comprising a covering layer overlying the photoconductive layer, said covering layer being comprised of a synthetic resin.
Claim 108
Dependent Claim
35 words
An image-forming member for electrophotography according to any one of claims 17 or 25 further comprising: (d) a depletion layer in said photoconductive layer; and (e) a barrier layer in contact with said photoconductive layer.
Claim 109
Dependent Claim
23 words
An image forming member for electrophotography according to claim 6 further comprising a barrier layer disposed between the substrate and the photoconductive layer.
Claim 110
Dependent Claim
101 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) a chemical modifier present in an amount from 0.1 to 30 atomic percent and selected from the group consisting of oxygen and nitrogen, and; (c) an electrically insulating covering layer overlying the photoconductive layer.
Claim 111
Dependent Claim
101 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) a chemical modifier present in an amount from 0.1 to 30 atomic percent and selected from the group consisting of oxygen and nitrogen, and; (c) an electrically insulating covering layer overlying the photoconductive layer.
Claim 112
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) a chemical modifier of oxygen and at least one member selected from the group consisting of carbon and nitrogen, and; (c) a covering layer overlying the photoconductive layer.
Claim 113
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) a chemical modifier of oxygen and at least one member selected from the group consisting of carbon and nitrogen, and; (c) a covering layer overlying the photoconductive layer.
Claim 114
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) a chemical modifier of nitrogen and at least one member selected from the group consisting of oxygen and carbon, and; (c) a covering layer overlying the photoconductive layer.
Claim 115
Dependent Claim
95 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) a chemical modifier of nitrogen and at least one member selected from the group consisting of oxygen and carbon, and; (c) a covering layer overlying the photoconductive layer.
Claim 116
Dependent Claim
92 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) oxygen in an amount from 0.1 to 30 atomic percent as a chemical modifier; and (c) an electrically insulating covering layer overlying the photoconductive layer.
Claim 117
Dependent Claim
92 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) oxygen in an amount from 0.1 to 30 atomic percent as a chemical modifier; and (c) an electrically insulating covering layer overlying the photoconductive layer.
Claim 118
Dependent Claim
90 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) nitrogen in an amount from 0.1 to 30 atomic percent as a chemical modifier; and (c) a covering layer overlying the photoconductive layer.
Claim 119
Dependent Claim
90 words
An image forming member for electrophotography which comprises: (a) a substrate; (b) a photoconductive layer, said photoconductive layer comprising a hydrogenated amorphous semiconductor, which semiconductor comprises: (i) a member of the group selected from silicon, germanium or mixtures thereof as a matrix, said matrix being in a hydrogenated amorphous form in said photoconductive layer and; wherein said photoconductive layer contains 1-40 atomic percent of hydrogen and; (ii) nitrogen in an amount from 0.1 to 30 atomic percent as a chemical modifier; and (c) a covering layer overlying the photoconductive layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |