US4443528A
Expired / Lapsed
US
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Photoconductive materials comprising nitro or cyano substituted phthalocyanine compounds for electrophotography
Assignee: Artience Co Ltd
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Filing: 1983-03-21
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Granted: 1984-04-17
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Expires: 2003-03-21
Abstract
Abstract A photoconductive material comprising a phthalocyanine and a phthalocyanine derivative in which the phthalocyanine molecule has benzene nuclei substituted with at least one member selected from nitro and cyano groups, and an electrophotographic plate comprising a photoconductive layer of the photoconductive material dispersed in a binder resin.
Inventors
- 👤 Shinichi Tamura
- 👤 Toshio Seta
- 👤 Tsuneo Tanaka
- 👤 Mititika Hikosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:57
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
31 words
A photoconductive material comprising a phthalocyanine and a phthalocyanine derivative in which the phthalocyanine molecule has benzene nuclei substituted with at least one member selected from nitro groups and cyano groups.
Claim 2
Dependent Claim
31 words
A photoconductive material comprising a phthalocyanine and a phthalocyanine derivative in which the phthalocyanine molecule has benzene nuclei substituted with at least one member selected from nitro groups and cyano groups.
Claim 3
Dependent Claim
24 words
A photoconductive material according to claim 1, wherein said phthalocyanine has a crystal form selected from the group consisting of α and β forms.
Claim 4
Dependent Claim
26 words
A photoconductive material according to claim 1 or 2, wherein said phthalocyanine derivative has 1-8 members selected from nitro and cyano substituents in the phthalocyanine molecule.
Claim 5
Dependent Claim
27 words
A photoconductive material according to claim 3, wherein said material comprises 100 parts by weight of the phthalocyanine and 0.1-20 parts by weight of the phthalocyanine derivative.
Claim 6
Dependent Claim
19 words
An electrophotographic plate comprising a photoconductive layer of the photoconductive material of claim 4 dispersed in a binder resin.
Claim 7
Dependent Claim
14 words
An electrophotographic plate according to claim 5, wherein no ordinary chemical sensitizer is contained.
Claim 8
Dependent Claim
11 words
An electrophotographic plates according to claim 6, further comprising an antioxidant.
Claim 9
Dependent Claim
37 words
A photoconductive material comprises a composition obtained by mixing a phthalocyanine and a phthalocyanine derivative with an inorganic acid capable of forming a salt with the phthalocyanine, and precipitating the mixture with water or an basic material.
Claim 10
Dependent Claim
37 words
A photoconductive material comprises a composition obtained by mixing a phthalocyanine and a phthalocyanine derivative with an inorganic acid capable of forming a salt with the phthalocyanine, and precipitating the mixture with water or an basic material.
Claim 11
Dependent Claim
13 words
A photoconductive material according to claim 8, wherein said phthalocyanine is copper phthalocyanine.
Claim 12
Dependent Claim
13 words
A photoconductive material according to claim 8, wherein said phthalocyanine is metal-free phthalocyanine.
Claim 13
Dependent Claim
23 words
A photoconductive material according to any one of claims 8, 9 or 10, wherein the phthalocyanine of said phthalocyanine derivative is copper phthalocyanine.
Claim 14
Dependent Claim
30 words
A photoconductive material according to any one of claims 8, 9 or 10, wherein said phthalocyanine derivative has 1-8 members selected from nitro and cyano substituents in the phthalocyanine molecule.
Claim 15
Dependent Claim
33 words
A photoconductive material according to any one of claims 8, 9 or 10, wherein said material comprises 100 parts by weight of the phthalocyanine and 0.01-20 parts by weight of the phthalocyanine derivative.
Claim 16
Dependent Claim
19 words
An electrophotographic plate comprising a photoconductive layer of the photoconductive material of claim 13 dispersed in a binder resin.
Claim 17
Dependent Claim
14 words
An electrophotographic plate according to claim 14, wherein no ordinary chemical sensitizer is contained.
Claim 18
Dependent Claim
11 words
An electrophotographic plate according to claim 15, further comprising an antioxidant.
Claim 19
Dependent Claim
17 words
An electrophotographic plate according to claim 14, wherein said photoconductive layer has a protective layer formed thereon.
Claim 20
Dependent Claim
18 words
A photoconductive material comprising a composition obtained by synthesizing a phthalocyanine in the presence of a phthalocyanine derivative.
Claim 21
Dependent Claim
18 words
A photoconductive material comprising a composition obtained by synthesizing a phthalocyanine in the presence of a phthalocyanine derivative.
Claim 22
Dependent Claim
24 words
A photoconductive material according to claim 18, wherein said phthalocyanine derivative has 1-8 members selected from nitro and cyano substituents in the phthalocyanine molecule.
Claim 23
Dependent Claim
29 words
A photoconductive material according to claim 18 or 19, wherein said material comprises 100 parts by weight of a phthalocyanine and 0.1-20 parts by weight of a phthalocyanine derivative.
Claim 24
Dependent Claim
19 words
An electrophotographic plate comprising a photoconductive layer of the photoconductive material of claim 20 dispersed in a binder resin.
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) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |