US4371600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Release overcoat for photoresponsive device
Assignee: Xerox Corp
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Filing: 1981-06-26
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Granted: 1983-02-01
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Expires: 2001-06-26
Abstract
Abstract This invention relates to a release material and photoresponsive devices, especially layered devices, containing such material; the release material being comprised of a cross-linked siloxy coupled, dihydroxy polymer said cross-linked material being comprised of a silicone polymer of the following formula: ##STR1## wherein R and R' are independently selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl, R" is selected from the group consisting of alkenes and substituted alkenes, Y is a dihydroxy radical, and m and n are numbers of sufficient value in order to result in a polymer having a molecular weight of from about 2,000 to about 250,000.
Inventors
- 👤 Richard L. Schank
- 👤 Dana G. Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:44
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G5/14708; G03G5/14713; G03G5/14747; G03G5/14773; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0557; G03G5/0578
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
An overcoated photoresponsive device comprised of a substrate, overcoated with a transport layer, which in turn is overcoated with a photogenerating layer containing therein as a release material a cross-linked silicone polymer of the formula: ##STR7## wherein R and R' are independently selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl, R" is selected from the group consisting of alkenes and substituted alkenes, Y is a dihydroxy radical, and m and n are numbers of sufficient value so as to result in a polymer having a molecular weight of from about 2,000 to about 250,000.
Claim 2
Dependent Claim
99 words
An overcoated photoresponsive device comprised of a substrate, overcoated with a transport layer, which in turn is overcoated with a photogenerating layer containing therein as a release material a cross-linked silicone polymer of the formula: ##STR7## wherein R and R' are independently selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl, R" is selected from the group consisting of alkenes and substituted alkenes, Y is a dihydroxy radical, and m and n are numbers of sufficient value so as to result in a polymer having a molecular weight of from about 2,000 to about 250,000.
Claim 3
Dependent Claim
30 words
An overcoated photoresponsive device in accordance with claim 1, wherein the substrate is overcoated with a photogenerating layer, and the photogenerating layer in turn is overcoated with a transport layer.
Claim 4
Dependent Claim
19 words
An overcoated photoresponsive device in accordance with claims 1 or 2, wherein the photogenerating layer is comprised of selenium.
Claim 5
Dependent Claim
18 words
An overcoated photoresponsive device in accordance with claim 2, wherein the photogenerating layer is comprised of trigonal selenium.
Claim 6
Dependent Claim
24 words
An overcoated photoresponsive device in accordance with claims 1 or 2, wherein the photogenerating layer is comprised of metal free phthalocyanines or methal phthalocyanines.
Claim 7
Dependent Claim
20 words
An overcoated photoresponsive device in accordance with claims 1 or 2, wherein the photogenerating layer is comprised of vanadyl phthalocyanine.
Claim 8
Dependent Claim
62 words
An overcoated photoresponsive device in accordance with claims 1 or 2, wherein the charge transport layer is comprised of molecules of the formula; ##STR8## dispersed in a highly insulating and transparent organic resinous material, wherein X is selected from the group consisting of (ortho) CH 3 , (meta) CH 3 , (para) CH 3 , (ortho) Cl, (meta) Cl, and (para) Cl.
Claim 9
Dependent Claim
17 words
An overcoated photoresponsive device in accordance with claims 1 or 2, wherein the transport molecule is N,N'-diphenyl-N,N'-bis-(methylphenyl)-[1,1-biphenyl]-4,4'-diamine.
Claim 10
Dependent Claim
31 words
An overcoated photoresponsive device in accordance with claims 1 or 2, wherein the silicone polymer is a cross-linked dimethylsiloxy-bisphenyl-A/methylvinylsiloxy-bisphenol-A polymer, methylphenolsiloxy-bisphenol-A/methylvinylsiloxy-bisphenol-A polymer, dimethylsiloxy-bisphenol-A/methylallylsiloxy-bisphenol-A polymer, methylphenolsiloxy-bisphenol-A/methylallylsiloxy-bisphenol-A polymer, diethylsiloxy-bisphenol-A/methylvinylsiloxy-bisphenol-A polymer, or methyloctylsiloxy-bisphenol-A/methylvinylsiloxy-bisphenol-A 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) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |