US4738913A
Expired / Lapsed
US
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Light receiving member for use in electrophotography comprising surface layer of a-Si:C:H
Assignee: Canon Inc
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Filing: 1987-01-21
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Granted: 1988-04-19
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Expires: 2007-01-21
Abstract
Abstract There is provided an improved light receiving member for use in electrophotography comprising a substrate for electrophotography and a light receiving layer constituted by a charge injection inhibition layer, a photoconductive layer and a surface layer, the charge injection inhibition layer being formed of an amorphous material containing silicon atoms as the main constituent atoms and an element for controlling the conductivity, the photoconductive layer being formed of an amorphous material containing silicon atoms as the main constituent atoms and at least one kind selected from hydrogen atoms and halogen atoms and the surface layer being formed of an amorphous material containing silicon atoms, carbon atoms and hydrogen atoms, and the amount of the hydrogen atoms contained in the surface layer being in the range from 41 to 70 atomic %.
Inventors
- 👤 Shigeru Shirai
- 👤 Keishi Saito
- 👤 Takayoshi Arai
- 👤 Minoru Kato
- 👤 Yasushi Fujioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:23
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/0825; G03G5/08235; G03G5/08242; G03G5/08257
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
127 words
A light receiving member for use in electrophotography comprising a substrate for electrophotography and a light receiving layer constituted by a charge injection inhibition layer, a photoconductive layer and a surface layer, the charge injection inhibition layer being formed of an amorphous material containing silicon atoms as the main constituent atoms and an element for controlling the conductivity, the photoconductive layer being formed of an amorphous material containing silicon atoms as the main constituent atoms and at least one kind selected from hydrogen atoms and halogen atoms and the surface layer being formed of an amorphous material containing silicon atoms, carbon atoms and hydrogen atoms, and the amount of the hydrogen atoms contained in the surface layer being in the range of 41 to 70 atomic %.
Claim 2
Dependent Claim
127 words
A light receiving member for use in electrophotography comprising a substrate for electrophotography and a light receiving layer constituted by a charge injection inhibition layer, a photoconductive layer and a surface layer, the charge injection inhibition layer being formed of an amorphous material containing silicon atoms as the main constituent atoms and an element for controlling the conductivity, the photoconductive layer being formed of an amorphous material containing silicon atoms as the main constituent atoms and at least one kind selected from hydrogen atoms and halogen atoms and the surface layer being formed of an amorphous material containing silicon atoms, carbon atoms and hydrogen atoms, and the amount of the hydrogen atoms contained in the surface layer being in the range of 41 to 70 atomic %.
Claim 3
Dependent Claim
28 words
A light receiving member for use in electrophotography according to claim 1, wherein the photoconductive layer contains at least one kind selected from nitrogen atoms and oxygen atoms.
Claim 4
Dependent Claim
34 words
A light receiving member for use in electrophotography according to claim 1 or 2, wherein the charge injection inhibition layer contains at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms.
Claim 5
Dependent Claim
38 words
A light receiving member for use in electrophotography according to claim 1, wherein the charge injection inhibition layer contains the element for controlling the conductivity in the state of being largely distributed in the side of the substrate.
Claim 6
Dependent Claim
46 words
A light receiving member for use in electrophotography according to claim 3, wherein the charge injection inhibition layer contains at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms in the state of being more largely distributed in the layer region near substrate.
Claim 7
Dependent Claim
41 words
A light receiving member for use in electrophotography according to claim 3, wherein the charge injection inhibition layer contains at least one kind selected from nitrogen atoms, hydrogen atoms and carbon atoms only in the layer region adjacent to the substrate.
Claim 8
Dependent Claim
43 words
A light receiving member for use in electrophotography according to claim 1, wherein an absorption layer for light of long wavelength formed of an amorphous material containing silicon atoms and germanium atoms is disposed between the substrate and the charge injection inhibition layer.
Claim 9
Dependent Claim
38 words
A light receiving member for use in electrophotography according to claim 7, wherein the absorption layer for light of long wavelength contains one kind selected from element for controlling the conductivity, nitrogen atoms, oxygen atoms and carbon atoms.
Claim 10
Dependent Claim
33 words
A light recieving member for use in electrophotography according to claim 1, 4 or 8, wherein the element for controlling the conductivity is an atom belonging the group III of the periodic table.
Claim 11
Dependent Claim
33 words
A light receiving member for us in electrophotography according to claim 1, 4 or 8, wherein the element for controlling the conductivity is an atom belonging the group V of the periodic table.
Claim 12
Dependent Claim
62 words
A light receiving member for use in electrophotography according to claim 1, wherein a contact layer formed of an amorphous material containing silicon atoms and at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms is disposed between the substrate and the absorption layer for light of long wavelength or between the substrate and the charge injection inhibition layer.
Claim 13
Dependent Claim
33 words
An electrophotographic process comprising the steps of charging the light receiving member of claim 1, and thereafter, irradiating the light receiving member with an electromagnetic wave carrying information, thereby forming an electrostatic image.
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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |