Patent US4581311A successfully refreshed from Google Patents.
US4581311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive composition with vinylidene chloride-acrylonitrile copolymer additive
Assignee: Fujifilm Holdings Corp
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Filing: 1985-05-07
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Granted: 1986-04-08
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Expires: 2005-05-07
Abstract
Abstract A photoconductive composition is disclosed which contains an organic photoconductor and a vinylidene chloride-acrylonitrile copolymer. Furthermore, there is disclosed an electrophotographic photoreceptive material using such a photoconductive composition as its photoreceptive layer. The material has improved flexibility while maintaining desirable electrophotographic characteristics.
Inventors
- 👤 Shunichi Kondo
- 👤 Kenji Sano
- 👤 Hideo Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:10
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/05; G03G5/0528; G03G5/0532; G03G5/0539; G03G5/0546
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
47 words
A photoconductive composition, comprising; an organic photoconductor of a molecular weight of about 100,000 to 1,000,000; and a vinylidene chloride-acrylonitrile copolymer, wherein the vinylidene chloride-acrylonitrile copolymer is present in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the organic photoconductor.
Claim 2
Dependent Claim
47 words
A photoconductive composition, comprising; an organic photoconductor of a molecular weight of about 100,000 to 1,000,000; and a vinylidene chloride-acrylonitrile copolymer, wherein the vinylidene chloride-acrylonitrile copolymer is present in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the organic photoconductor.
Claim 3
Dependent Claim
29 words
A photoconductive composition as claimed in claim 1, wherein the photoconductor is comprised of π-electron systems having polycyclic aromatic rings in a main or side chain of the photoconductor.
Claim 4
Dependent Claim
29 words
A photoconductive composition as claimed in claim 1, wherein the photoconductor is comprised of π-electron systems having aromatic heterocyclic rings in a main or side chain of the photoconductor.
Claim 5
Dependent Claim
82 words
A photoconductive composition as claimed in claim 1, wherein the photoconductor is an N-vinylcarbazole copolymer containing an N-ethylenecarbazole repeating unit in a fraction of 50 mole % or more, the N-ethylenecarbazole unit being represented by the following general formula: ##STR2## wherein Q is a substituent selected from the group consisting of an aryl group, an alkylaryl group, an amino group, an alkylamino group, a dialkylamino group, an arylamino group, a diarylamino group, an N-alkyl-N-arylamino group, a nitro group, or a halogen atom.
Claim 6
Dependent Claim
76 words
An electrophotographic photoreceptive material, comprising: a support base having a conductive surface; and an electrophotographic photoreceptive layer positioned on the conductive surface, the electrophotographic photoreceptive layer being comprised of a photoconductive composition comprising an organic photoconductor of a molecular weight of about 100,000 to 1,000,000 and a vinylidene chloride-acrylonitrile copolymer, wherein the vinylidene chloride-acrylonitrile copolymer is present in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the organic photoconductor.
Claim 7
Dependent Claim
76 words
An electrophotographic photoreceptive material, comprising: a support base having a conductive surface; and an electrophotographic photoreceptive layer positioned on the conductive surface, the electrophotographic photoreceptive layer being comprised of a photoconductive composition comprising an organic photoconductor of a molecular weight of about 100,000 to 1,000,000 and a vinylidene chloride-acrylonitrile copolymer, wherein the vinylidene chloride-acrylonitrile copolymer is present in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the organic photoconductor.
Claim 8
Dependent Claim
30 words
An electrophotographic photoreceptive material as claimed in claim 5, wherein the photoconductor is comprised of π-electron systems having polycyclic aromatic rings in a main or side chain of the photoconductor.
Claim 9
Dependent Claim
30 words
An electrophotographic photoreceptive material as claimed in claim 5, wherein the photoconductor is comprised of π-electron systems having aromatic heterocyclic rings in a main or side chain of the photoconductor.
Claim 10
Dependent Claim
84 words
An electrophotographic photoreceptive material as claimed in claim 5, wherein the organic photoconductor is an N-vinylcarbazole copolymer comprising an N-ethylenecarbazole having a repeating unit in a fraction of 50 mole % or more, the N-ethylenecarbazole unit being represented by the following general formula: ##STR3## wherein Q is selected from the group consisting of an aryl group, an alkylaryl group, an amino group, an alkylamino group, a dialkylamino group, an arylamino group, a diarylamino group, an N-alkyl-N-arylamino group, a nitro group, or a halogen atom.
Claim 11
Dependent Claim
37 words
An electrophotographic photoreceptive material as claimed in claim 5, wherein the support base is rendered electrically conductive by evaporating a compound selected from the group consisting of a metal, SnO 2 or In 2 O 3 thereon.
Claim 12
Dependent Claim
21 words
An electrophotographic photoreceptive material as claimed in claim 9, wherein the support base is comprised of drums or sheets of metal.
Claim 13
Dependent Claim
18 words
An electrophotographic photoreceptive material as claimed in claim 9, wherein the support base is comprised of paper sheets.
Claim 14
Dependent Claim
18 words
An electrophotographic photoreceptive material as claimed in claim 9, wherein the support base is comprised of plastic films.
Claim 15
Dependent Claim
18 words
An electrophotographic photoreceptive material as claimed in claim 9, wherein the support base is comprised of glass plates.
Claim 16
Dependent Claim
24 words
An electrophotographic photoreceptive material as claimed in claim 5, wherein the support base is comprised of In 2 O 3 evaporated polyethylene terephthalate film.
Claim 17
Dependent Claim
27 words
An electrophotographic photoreceptive material as claimed in claim 5. wherein the support base is comprised of polyethylene terephthalate film having SnO 2 fine powder dispersed in gelatin.
Claim 18
Dependent Claim
78 words
An electrophotographic photoreceptive material as claimed in claim 9, wherein the organic photoconductor is an N-vinylcarbazole copolymer comprising an N-ethylenecarbazole having a repeating unit in a fraction of 50 mole % or more, the N-ethylenecarbazole unit being represented by the following general formula: ##STR4## wherein Q is an aryl group, an alkylaryl group, an amino group, an alkylamino group, a dialkylamino group, an arylamino group, a diarylamino group, an N-alkyl-N-arylamino group, a nitro group, or a halogen atom.
Claim 19
Dependent Claim
82 words
An electrophotographic photoreceptive material, comprising: a support base having a conductive surface; an electrophotographic photoreceptive layer positioned on the conductive surface, the electrophotographic photoreceptive layer being comprised of a photoconductive composition comprising an organic photoconductor of a molecular weight of about 100,000 to 1,000,000 wherein said photoconductor possesses film forming ability; and a vinylidene chloride-acrylonitrile copolymer, wherein the vinylidene chloride-acrylonitrile copolymer is present in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the organic photoconductor.
Claim 20
Dependent Claim
82 words
An electrophotographic photoreceptive material, comprising: a support base having a conductive surface; an electrophotographic photoreceptive layer positioned on the conductive surface, the electrophotographic photoreceptive layer being comprised of a photoconductive composition comprising an organic photoconductor of a molecular weight of about 100,000 to 1,000,000 wherein said photoconductor possesses film forming ability; and a vinylidene chloride-acrylonitrile copolymer, wherein the vinylidene chloride-acrylonitrile copolymer is present in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the organic photoconductor.
Claim 21
Dependent Claim
84 words
An electrophotographic photoreceptive material, comprising: a support base having a conductive surface; an electrophotographic photoreceptive layer positioned on the conductive surface, the electrophotographic photoreceptive layer being comprised of a photoconductive composition comprising an organic photoconductor of a molecular weight of about 100,000 to 1,000,000 wherein said photoconductor possesses film forming ability; a vinylidene chloride-acrylonitrile copolymer, wherein the vinylidene chloride-acrylonitrile copolymer is present in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the organic photoconductor; and a binder.
Claim 22
Dependent Claim
84 words
An electrophotographic photoreceptive material, comprising: a support base having a conductive surface; an electrophotographic photoreceptive layer positioned on the conductive surface, the electrophotographic photoreceptive layer being comprised of a photoconductive composition comprising an organic photoconductor of a molecular weight of about 100,000 to 1,000,000 wherein said photoconductor possesses film forming ability; a vinylidene chloride-acrylonitrile copolymer, wherein the vinylidene chloride-acrylonitrile copolymer is present in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the organic photoconductor; and a binder.
Claim 23
Dependent Claim
23 words
An electrophotographic photoreceptive material as claimed in claim 5, wherein the support base is rendered electrically conductive by laminating a metallic foil thereon.
Claim 24
Dependent Claim
54 words
An electrophotographic photoreceptive material as claimed in claim 5, wherein the support base is rendered electrically conductive by coating the support base with fine particles selected from the group consisting of a dispersion of SnO 2 , In 2 O 3 , CuI, carbon black or a metal power dispersed in a binder polymer.
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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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |