US4418134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous composition-sensitive photoconductive composition
Assignee: Polychrome Corp
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Filing: 1983-03-28
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Granted: 1983-11-29
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Expires: 2003-03-28
Abstract
Abstract An aqueous composition-sensitive photoconductive composition useful in the preparation of aqueous composition decoatable electrophotographic elements, such elements and low cost lithographic printing plates prepared from said elements the aqueous composition-sensitive photoconductive composition comprising the admixture of an inorganic photoconductor, an organic photoconductor and an aqueous composition-sensitive resin, and, if desired, to increase exposure speed, a dyestuff photosensitizer.
Inventors
- 👤 Jayanti Patel
- 👤 Ken-ichi Shimazu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:14
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087; G03G5/09
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
53 words
A photoconductive composition, which is dispersible in aqueous compositions, consisting essentially of an admixture of I. at least one inorganic photoconductor selected from the group consisting of ZnO and TiO 2 , II. at least one photoconductive anthraquinone pigment, and III. at least one insulating resin soluble or dispersible in an aqueous composition.
Claim 2
Dependent Claim
53 words
A photoconductive composition, which is dispersible in aqueous compositions, consisting essentially of an admixture of I. at least one inorganic photoconductor selected from the group consisting of ZnO and TiO 2 , II. at least one photoconductive anthraquinone pigment, and III. at least one insulating resin soluble or dispersible in an aqueous composition.
Claim 3
Dependent Claim
14 words
The photoconductive composition according to claim 1 further containing at least one dyestuff sensitizer.
Claim 4
Dependent Claim
22 words
The photoconductive composition according to claim 1 wherein said dyestuff sensitizer is selected from the group consisting of triarylmethane and xanthene dyes.
Claim 5
Dependent Claim
14 words
The photoconductive composition according to claim 3 wherein said dyestuff sensitizer is Rose Bengal.
Claim 6
Dependent Claim
36 words
The photoconductive composition according to claim 1 further containing at least one additive selected from the group consisting of colorants, other resins, reactive diluents, plasticizers, fillers, thermally and/or photolytically activated polymerization initiators, and thermal polymerization inhibitors.
Claim 7
Dependent Claim
12 words
The photoconductive composition according to claim 1 wherein said photoconductor is ZnO.
Claim 8
Dependent Claim
26 words
The photoconductive composition according to claim 1 wherein said pigment is selected from the group consisting of C.I. Pigment Red 168, and C.I. Pigment Orange 43.
Claim 9
Dependent Claim
33 words
The photoconductive composition according to claim 1 wherein said resin is selected from the group consisting of phenolformaldehyde resins, phenoxy resins, epoxy resins and homo and co-polymers of vinyl acetate, and acrylic monomers.
Claim 10
Dependent Claim
36 words
The photoconductive composition according to claim 1 wherein said inorganic photoconductor is ZnO, the organic photoconductor is C.I. Pigment Orange 43, the resin is a carboxyl containing poly(vinyl acetate) copolymer and the sensitizer is Rose Bengal.
Claim 11
Dependent Claim
71 words
An electrophotographic element comprising a conductive base material having coated upon at least one surface thereof an photoconductive composition, which is soluble or dispersible in aqueous compositions, consisting essentially of as major ingredients: I. at least one inorganic photoconductor selected from the group consisting of Zn0 and TiO 2 , II. at least one photoconductive anthraquinone pigment, and III. at least one insulating resin soluble or dispersible in an aqueous composition.
Claim 12
Dependent Claim
71 words
An electrophotographic element comprising a conductive base material having coated upon at least one surface thereof an photoconductive composition, which is soluble or dispersible in aqueous compositions, consisting essentially of as major ingredients: I. at least one inorganic photoconductor selected from the group consisting of Zn0 and TiO 2 , II. at least one photoconductive anthraquinone pigment, and III. at least one insulating resin soluble or dispersible in an aqueous composition.
Claim 13
Dependent Claim
16 words
The element according to claim 10 wherein said composition further contains at least one dyestuff sensitizer.
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) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |