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US4405702A
Expired / Lapsed
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Electrophotographic image-forming member with ladder-type silicon resin layer
Assignee: Canon Inc
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Filing: 1982-01-08
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Granted: 1983-09-20
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Expires: 2002-01-08
Abstract
Abstract An electrophotographic image-forming member comprises: an electrophotographic supporting substrate; a photoconductive layer constituted of an amorphous material which contains silicon atoms as matrix and at least one of hydrogen atoms and halogen atoms; and a resin layer formed by use of a ladder type of silicon resin, between said supporting substrate and photo-conductive layer.
Inventors
- 👤 Shigeru Shirai
- 👤 Junichiro Kanbe
- 👤 Shigeru Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:21
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/142; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/08221
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
54 words
An electrophotographic image-forming member which comprises: an electrophotographic supporting substrate; a photoconductive layer comprising an amorphous material which contains silicon atoms as matrix and at least one of hydrogen atoms and halogen atoms; and a resin layer formed by use of a ladder type of silicon resin, between said supporting substrate and photoconductive layer.
Claim 2
Dependent Claim
54 words
An electrophotographic image-forming member which comprises: an electrophotographic supporting substrate; a photoconductive layer comprising an amorphous material which contains silicon atoms as matrix and at least one of hydrogen atoms and halogen atoms; and a resin layer formed by use of a ladder type of silicon resin, between said supporting substrate and photoconductive layer.
Claim 3
Dependent Claim
17 words
An electrophotographic image-forming member of claim 1, wherein said amorphous material contains also germanium as constituent atoms.
Claim 4
Dependent Claim
21 words
An electrophotographic image-forming member of claim 1, which further has a barrier layer between the resin layer and the photoconductive layer.
Claim 5
Dependent Claim
19 words
An electrophotographic image-forming member of claim 3, wherein said barrier layer has a thickness of 30 to 1000 angstroms.
Claim 6
Dependent Claim
20 words
An electrophotographic image-forming member of claim 1, which further has a barrier layer between the substrate and the resin layer.
Claim 7
Dependent Claim
20 words
An electrophotographic image-forming member of claim 5, wherein the thickness of said barrier layer ranges from 30 to 1000 angstroms.
Claim 8
Dependent Claim
20 words
An electrophotographic image-forming member of claim 1, wherein the thickness of said resin layer ranges from 0.1 to 5 microns.
Claim 9
Dependent Claim
34 words
An electrophotographic image-forming member of claim 1, wherein said ladder-type silicon resins have the following formula: ##STR3## wherein R 1 and R 2 each represent a substituent selected from hydrogen, methyl, ethyl and phenyl.
Claim 10
Dependent Claim
17 words
An electrophotographic image-forming member of claim 1, wherein said substrate is in the shape of a cylinder.
Claim 11
Dependent Claim
20 words
An electrophotographic image-forming member of claim 1, wherein the thickness of said photoconductive layer ranges from 3 to 100 microns.
Claim 12
Dependent Claim
14 words
An electrophotographic image-forming member of claim 1, wherein said photoconductive layer contains an impurity.
Claim 13
Dependent Claim
20 words
An electrophotographic image-forming member of claim 11, wherein said impurity is an element in Group VA of the periodic table.
Claim 14
Dependent Claim
26 words
An electrophotographic image-forming member of claim 12, wherein said element in Group VA of the periodic table is selected from N, P, As, Sb, and Bi.
Claim 15
Dependent Claim
20 words
An electrophotographic image-forming member of claim 11, wherein said impurity is an element in Group IIIA of the periodic table.
Claim 16
Dependent Claim
26 words
An electrophotographic image-forming member of claim 14, wherein said element in Group IIIA of the periodic table is selected from B, Al, Ga, In, and Tl.
Claim 17
Dependent Claim
39 words
An electrophotographic image-forming member of claim 3, wherein said barrier layer comprises an amorphous material containing at least one selected from the group consisting of a carbon atom, a nitrogen atom and an oxygen atom in a silicon matrix.
Claim 18
Dependent Claim
29 words
An electrophotographic image-forming member of claim 16, wherein said amorphous material further contains at least one selected from the group consisting of a hydrogen atom and a halogen atom.
Claim 19
Dependent Claim
39 words
An electrophotographic image-forming member of claim 5, wherein said barrier layer comprises an amorphous material containing at least one selected from the group consisting of a carbon atom, a nitrogen atom, and an oxygen atom in a silicon matrix.
Claim 20
Dependent Claim
29 words
An electrophotographic image-forming member of claim 18, wherein said amorphous material further contains at least one selected from the group consisting of a hydrogen atom and a halogen atom.
Claim 21
Dependent Claim
17 words
An electrophotographic image-forming member of claim 3, wherein said barrier layer contains an electrically insulating metallic oxide.
Claim 22
Dependent Claim
71 words
An electrophotographic image-forming member of claim 20, wherein said electrically insulating metallic oxide is at least one selected from the group consisting of TiO 2 , Ce 2 O 3 , ZrO 2 , HfO 2 , GeO 2 , CaO, BeO, P 2 O 5 , Y 2 O 3 , Cr 2 O 3 , Al 2 O 3 , MgO, Mg.Al 2 O 3 and SiO 2 .MgO.
Claim 23
Dependent Claim
17 words
An electrophotographic image-forming member of claim 5, wherein said barrier layer contains an electrically insulating metallic oxide.
Claim 24
Dependent Claim
69 words
An electrophotographic image-forming member of claim 22, wherein said electrically insulating metallic oxide is at least one selected from the group consisting of TiO 2 , Ce 2 O 3 , ZrO 2 , HfO 2 , GeO 2 , CaO, BeO, P 2 O 5 , Y 2 O 3 , Cr 2 O 3 , Al 2 O 3 , MgO, MgO.Al 2 O 2 and SiO.MgO.
Claim 25
Dependent Claim
24 words
An electrophotographic image-forming member of claim 1, wherein the content of hydrogen (H) in said photoconductive layer ranges from one to 40 atomic percent.
Claim 26
Dependent Claim
24 words
An electrophotographic image-forming member of claim 1, wherein the content of halogen (X) in said photoconductive layer ranges from one to 40 atomic percent.
Claim 27
Dependent Claim
24 words
An electrophotographic image-forming member of claim 1, wherein the total content of hydrogen (H) and halogen (X) ranges from one to 40 atomic percent.
References Cited (Backward Citations)
US4265991A
Cited
JPS5689745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |