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US4571371A
Expired / Lapsed
US
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Electrophotographic photosensitive layer comprising silicone compound leveling agent
Assignee: Canon Inc
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Filing: 1984-05-07
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Granted: 1986-02-18
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Expires: 2004-05-07
Abstract
Abstract An electrophotographic photosensitive member comprises a substrate and a photosensitive layer, and an electroconductive layer containing an electroconductive material, a binder and a leveling agent is provided between the substrate and the photosensitive layer. The silicone compound leveling agent improves the interfaces between the electroconductive layer and both the substrate and photosensitive layer.
Inventors
- 👤 Yuichi Yashiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:18
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/142
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
65 words
An electrophotographic photosensitive member which comprises an electroconductive layer having a volume resistivity of not more than 10 13 ohm·cm and containing a mixture of an electroconducitve power, a binder resin and a silicone compound leveling agent, said agent in an amount of 0.001 to 1% by weight of the electroconductive layer, between a substrate made of a metal or alloy and a photosensitive layer.
Claim 2
Dependent Claim
65 words
An electrophotographic photosensitive member which comprises an electroconductive layer having a volume resistivity of not more than 10 13 ohm·cm and containing a mixture of an electroconducitve power, a binder resin and a silicone compound leveling agent, said agent in an amount of 0.001 to 1% by weight of the electroconductive layer, between a substrate made of a metal or alloy and a photosensitive layer.
Claim 3
Dependent Claim
49 words
An electrophotographic photosensitive member according to claim 1 in which the leveling agent is a silicone compound of the formula (1): ##STR4## where R is a member selected from the group consisting of hydrogen, alkyl, alkylaryl, glycol residue, hydroxyalkyl, hydroxy, and amino, and n and m are positive integers.
Claim 4
Dependent Claim
42 words
An electrophotographic photosensitive member according to claim 2 in which the leveling agent is a member selected from the group consisting of dimethylpolysiloxane, alkyl modified silicone, alkylaryl modified silicone, polyether modified silicone, glycol modified silicone, alcohol modified silicone, and amine modified silicone.
Claim 5
Dependent Claim
39 words
An electrophotographic photosensitive member according to claim 1 in which the electroconductive material is electroconductive powders of a member selected from the group consisting of nickel, copper, silver, aluminum, iron oxide, tin oxide, antimony oxide, indium oxide and carbon.
Claim 6
Dependent Claim
17 words
An electrophotographic photosensitive member according to claim 1 in which the electroconductive layer contains a non-electroconductive pigment.
Claim 7
Dependent Claim
35 words
An electrophotographic photosensitive member according to claim 5 in which the non-electroconductive pigment is a member selected from the group consisting of zinc oxide, titanium oxide, calcium carbonate, aluminum oxide, barium carbonate and barium sulfate.
Claim 8
Dependent Claim
23 words
An electrophotographic photosensitive member according to claim 1 in which an adhesive layer is provided between the electroconductive layer and the photosensitive layer.
Claim 9
Dependent Claim
61 words
An electrophotographic photosensitive member according to claim 7 in which the adhesive layer is a film containing a member selected from the group consisting of polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyridine, polyvinyl pyrrolidone, polyethylene oxide, polyacrylic acid, methylcellulose, ethylcellulose, polyglutamic acid, casein, gelatin, starch, polyamide resins, phenolic resins, polyvinylformal, polyurethan elastomer, alkyd resins, ethylene-vinyl acetate copolymer and vinylpyrrolidone-vinyl acetate copolymer.
Claim 10
Dependent Claim
20 words
An electrophotographic photosensitive member according to claim 7 in which the adhesive layer is a film composed of polyamide resins.
Claim 11
Dependent Claim
17 words
An electrophotographic photosensitive member according to claim 9 in which the polyamide resins are copolymerized polyamide resins.
Claim 12
Dependent Claim
23 words
An electrophotographic photosensitive member according to claim 1 in which the photosensitive layer is a film containing a photoconductive powder and a binder.
Claim 13
Dependent Claim
28 words
An electrophotographic photosensitive member according to claim 1 in which the photosensitive layer has a laminate structure composed of a charge generation layer and a charge transfer layer.
Claim 14
Dependent Claim
44 words
An electrophotographic photosensitive member according to claim 12 which the charge generation layer is a film containing a pigment or dye selected from the group consisting of azo pigments, quinone pigments, quinocyanine pigments, perylene pigments, indigo pigments, phthalocyanine pigments, quinacridone pigments and pyrylium dyes.
Claim 15
Dependent Claim
23 words
An electrophotographic photosensitive member according to claim 12 in which the charge generation layer is a film containing azo pigments and a binder.
Claim 16
Dependent Claim
16 words
An electrophotographic photosensitive member according to claim 14 in which the azo pigments are disazo pigments.
Claim 17
Dependent Claim
19 words
An electrophotographic photosensitive according to claim 12 in which the charge generation layer contains phthalocyanine pigments and a binder.
Claim 18
Dependent Claim
41 words
An electrophotographic photosensitive member according to claim 12 in which the charge transfer layer is a film containing a charge transfer material selected from the group consisting of polycyclic aromatic compounds, nitrogen containing heterocyclic compounds, and hydrazone compounds, and a binder.
Claim 19
Dependent Claim
24 words
An electrophotographic photosensitive member according to claim 12 in which the charge transfer layer is a film containing a hydrazone compound and a binder.
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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) | 1989-02-17 | 1989-08-19 | 1990-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-17 | 1993-08-19 | 1994-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-17 | 1997-08-19 | 1998-02-18 | $7700.00 | Window Closed / Lapsed |