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US5204200A
Expired / Lapsed
US
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Laminated organic photosensitive material comprising an X-type nonmetal phthalocyanine in the charge generating layer
Assignee: Bando Chemical Industries Ltd
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Filing: 1991-02-07
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Granted: 1993-04-20
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Expires: 2011-02-07
Abstract
Abstract There is disclosed a laminated organic photosensitive material which comprises an electroconductive support, an undercoat, a charge producing layer and a charge transporting layer in sequence wherein the undercoat is composed of an alcohol soluble polyamide resin and wherein the charge producing layer contains X-type nonmetal phthalocyanine as a charge producing substance and a mixture of a vinyl chloride-etyhylene copolymer in an amount of 40-95% by weight and a vinyl chloride-vinyl acetate-maleic acid copolymer in an amount of 5-60% by weight based on the mixture as a binder resin for the layer.
Inventors
- 👤 Tomokazu Kobata
- 👤 Yosuke Matsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:12
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0532; G03G5/0539; G03G5/0542; G03G5/0546; G03G5/06; G03G5/0664; G03G5/0696; G03G5/14; G03G5/142
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
109 words
A laminated organic photosensitive material which comprises an electroconductive support, an undercoat formed on the electroconductive support, a charge producing layer provided on the undercoat and a charge transporting layer provided on the charge producing layer wherein the undercoat comprises an alcohol soluble polyamide resin and wherein the charge producing layer comprises (a) an X-type nonmetal phthalocyanine, as a charge producing substance, and (b) a mixture of a vinyl chloride-ethylene copolymer, in an amount of 40-95% by weight, based on the mixture, and a vinyl chloride-vinyl acetate-maleic acid copolymer, in an amount of 5-60% by weight, based on the mixture, as a binder resin for the charge producing layer.
Claim 2
Dependent Claim
109 words
A laminated organic photosensitive material which comprises an electroconductive support, an undercoat formed on the electroconductive support, a charge producing layer provided on the undercoat and a charge transporting layer provided on the charge producing layer wherein the undercoat comprises an alcohol soluble polyamide resin and wherein the charge producing layer comprises (a) an X-type nonmetal phthalocyanine, as a charge producing substance, and (b) a mixture of a vinyl chloride-ethylene copolymer, in an amount of 40-95% by weight, based on the mixture, and a vinyl chloride-vinyl acetate-maleic acid copolymer, in an amount of 5-60% by weight, based on the mixture, as a binder resin for the charge producing layer.
Claim 3
Dependent Claim
20 words
The laminated organic photosensitive material as claimed in claim 1 wherein the alcohol soluble polyamide resin is a nylon copolymer.
Claim 4
Dependent Claim
17 words
The laminated organic photosensitive material as claimed in claim 1 wherein the nylon copolymer is nylon 6/66.
Claim 5
Dependent Claim
17 words
The laminated organic photosensitive material as claimed in claim 1 wherein the nylon copolymer is nylon 6/66/610.
Claim 6
Dependent Claim
17 words
The laminated organic photosensitive material as claimed in claim 1 wherein the nylon copolymer is nylon 6/66/610/12.
Claim 7
Dependent Claim
23 words
The laminated organic photosensitive material as claimed in claim 1 wherein the alcohol soluble polyamide resin is soluble in methanol, ethanol or propanol.
Claim 8
Dependent Claim
19 words
The laminated organic photosensitive material as claimed in claim 1 wherein the undercoat has a thickness of 0.3-5 microns.
Claim 9
Dependent Claim
28 words
The laminated organic photosensitive material as claimed in claim 1 wherein the vinyl chloride-ethylene copolymer has an ethylene content of 3-10% and an average polymerization degree of 400-1500.
Claim 10
Dependent Claim
30 words
The laminated organic photosensitive material as claimed in claim 1 wherein the charge transporting layer contains the binder resin in an amount of 5-50% by weight based on the layer.
Claim 11
Dependent Claim
21 words
The laminated organic photosensitive material as claimed in claim 1 wherein the charge transporting layer has a thickness of 0.05-1 micron.
Claim 12
Dependent Claim
21 words
The laminated organic photosensitive material as claimed in claim 1 wherein the charge transporting layer has a thickness of 5-100 microns.
References Cited (Backward Citations)
US4877701A
Cited
US4800144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |