US4820601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoresponsive imaging members with protective copolyurethane overcoatings
Assignee: Xerox Corp
•
Filing: 1988-02-01
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Granted: 1989-04-11
•
Expires: 2008-02-01
Abstract
Abstract An imaging member comprised of a photoconductive layer, and a protective copolyurethane overcoating of the formula: ##STR1## wherein A is a trivalent group; A' is a bivalent group; R is selected from the group consisting of alkylene, substituted alkylene, arylene, and substituted arylene; x and y are number mole fractions of from about 0.05 to about 0.95 subsequent to the provision that the sum of x+y is equal to 1.0. Also disclosed are processes for the preparation of the aforementioned copolyurethanes.
Inventors
- 👤 Beng S. Ong
- 👤 Dasarao K. Murti
- 👤 John R. C. Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:45
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G18/677; C08G18/678; G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G5/14708; G03G5/14713; G03G5/14747; G03G5/14769; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/10
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
70 words
An imaging member comprised of a photoconductive layer, and a protective copolyurethane coating of the formula: ##STR9## wherein A is a trivalent group; A' is a bivalent group; R is selected from the group consisting of alkylene, substituted alkylene, arylene, and substituted arylene; x and y are number mole fractions of from about 0.05 to about 0.95 subsequent to the provision that the sum of x+y is equal to 1.0.
Claim 2
Dependent Claim
70 words
An imaging member comprised of a photoconductive layer, and a protective copolyurethane coating of the formula: ##STR9## wherein A is a trivalent group; A' is a bivalent group; R is selected from the group consisting of alkylene, substituted alkylene, arylene, and substituted arylene; x and y are number mole fractions of from about 0.05 to about 0.95 subsequent to the provision that the sum of x+y is equal to 1.0.
Claim 3
Dependent Claim
16 words
An imaging member in accordance with claim 1 wherein the photoconductive layer is comprised of selenium.
Claim 4
Dependent Claim
18 words
An imaging member in accordance with claim 1 wherein the photoconductive layer is comprised of a selenium alloy.
Claim 5
Dependent Claim
17 words
An imaging member in accordance with claim 3 wherein the alloy is selenium arsenic, or selenium tellurium.
Claim 6
Dependent Claim
21 words
An imaging member in accordance with claim 1 wherein the trivalent group A contains from 4 to about 20 carbon atoms.
Claim 7
Dependent Claim
13 words
An imaging member in accordance with claim 1 wherein A is 2,2-dimethylene butyl.
Claim 8
Dependent Claim
13 words
An imaging member in accordance with claim 1 wherein A is 2,2-dimethylene propyl.
Claim 9
Dependent Claim
13 words
An imaging member in accordance with claim 1 wherein A is 2,2-dimethylene ethyl.
Claim 10
Dependent Claim
13 words
An imaging member in accordance with claim 1 wherein A is triethylene amine.
Claim 11
Dependent Claim
22 words
An imaging member in accordance with claim 1 wherein R is an arylene group of from 6 to about 24 carbon atoms.
Claim 12
Dependent Claim
22 words
An imaging member in accordance with claim 1 wherein R is a alkylene group of from 1 to about 20 carbon atoms.
Claim 13
Dependent Claim
12 words
An imaging member in accordance with claim 1 wherein R is hexamethylene.
Claim 14
Dependent Claim
12 words
An imaging member in accordance with claim 1 wherein R is phenylene.
Claim 15
Dependent Claim
12 words
An imaging member in accordance with claim 1 wherein R is tolylene.
Claim 16
Dependent Claim
25 words
An imaging member in accordance with claim 1 wherein the bivalent group A' contains heteroatoms selected from the group consisting of nitrogen, oxygen, and sulfur.
Claim 17
Dependent Claim
20 words
An imaging member in accordance with claim 1 wherein A' is --CH 2 CH 2 OCH 2 CH 2 --.
Claim 18
Dependent Claim
24 words
An imaging member in accordance with claim 1 wherein A' is --CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 --.
Claim 19
Dependent Claim
24 words
An imaging member in accordance with claim 1 wherein A' is --CH 2 CH 2 N(t-C 4 H 9 )CH 2 CH 2 --.
Claim 20
Dependent Claim
20 words
An imaging member in accordance with claim 1 wherein A' is --CH 2 CH 2 SCH 2 CH 2 --.
Claim 21
Dependent Claim
24 words
An imaging member in accordance with claim 1 wherein the bivalent group A' is an alkylene of from 2 to about 20 carbon atoms.
Claim 22
Dependent Claim
28 words
An imaging member in accordance with claim 1 wherein A' is --(CH 2 ) n -- wherein n is a number of from about 2 to about 20.
Claim 23
Dependent Claim
20 words
An imaging member in accordance with claim 1 wherein A' is --CH 2 C(CH 3 ) 2 CH 2 --.
Claim 24
Dependent Claim
20 words
An imaging member in accordance with claim 1 wherein A' is --CH 2 C 6 H 10 CH 2 --.
Claim 25
Dependent Claim
36 words
An imaging member in accordance with claim 1 wherein the copolyurethane is selected from the group consisting of those represented by the formulas of FIGS. 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10.
Claim 26
Dependent Claim
12 words
An imaging member in accordance with claim 1 containing a supporting substrate.
Claim 27
Dependent Claim
37 words
An imaging member comprised of supporting substrate, a photogenerating layer comprised of a photogenerating pigment optionally dispersed in a resinous binder, an aryl amine hole transport layer, and as a protective overcoating the copolyurethanes of claim 1.
Claim 28
Dependent Claim
25 words
An imaging member in accordance with claim 26 wherein the photogenerating pigment is selected from the group consisting of metal phthalocyanines and metal free phthalocyanines.
Claim 29
Dependent Claim
28 words
An imaging member in accordance with claim 26 wherein the hole transporting layer contains molecules of the formula ##STR10## wherein X is an alkyl group, or halogen atom.
Claim 30
Dependent Claim
18 words
An imaging member in accordance with claim 26 wherein the overcoating is the copolyurethanes represented by FIG. 1.
Claim 31
Dependent Claim
18 words
An imaging member in accordance with claim 26 wherein the overcoating is the copolyurethane represented by FIG. 3.
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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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |