Patent US4983482A successfully refreshed from Google Patents.
US4983482A
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Photoconductive imaging members with polyurethane hole transporting layers
Assignee: Xerox Corp
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Filing: 1989-04-03
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Granted: 1991-01-08
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Expires: 2009-04-03
Abstract
Abstract A layered photoresponsive imaging member comprised of a photogenerating layer, and in contact therewith a hole transporting layer comprised of charge transport polyurethanes of the following formula, optionally doped with a charge transport compound, or optionally dispersed in an inert resinous binder: ##STR1## wherein A, B and Z are independently selected from the group of bifunctional linkages; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y represent the mole fractional numbers of the polyurethane structural composition units, subject to the provision that x is greater than 0 and that the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Inventors
- 👤 Beng S. Ong
- 👤 Dasarao K. Murti
- 👤 Lupu Alexandru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:51
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/329; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/075; G03G5/076; G03G5/0763; G03G5/0764
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
86 words
A layered photoresponsive imaging member comprised of a photogenerating layer, and a hole transporting layer comprised of charge transport polyurethanes of the following formula: ##STR6## wherein A, B and Z are independently selected from the group of bifunctional linkages; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y represent mole fraction numbers wherein x is greater than 0 and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 2
Dependent Claim
86 words
A layered photoresponsive imaging member comprised of a photogenerating layer, and a hole transporting layer comprised of charge transport polyurethanes of the following formula: ##STR6## wherein A, B and Z are independently selected from the group of bifunctional linkages; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y represent mole fraction numbers wherein x is greater than 0 and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 3
Dependent Claim
22 words
An imaging member in accordance with claim 1 wherein A, B, and Z are alkylene, arylene, substituted arylene, ether or a polyether.
Claim 4
Dependent Claim
20 words
An imaging member in accordance with claim 1 wherein n is a number of from about 5 to about 1,000.
Claim 5
Dependent Claim
36 words
An imaging member in accordance with claim 1 wherein R is an alkyl group containing from 1 to about 25 carbon atoms, and Ar is an aryl group containing from 6 to about 30 carbon atoms.
Claim 6
Dependent Claim
23 words
An imaging member in accordance with claim 1 wherein R and Ar are aryl groups containing from 6 to about 24 carbon atoms.
Claim 7
Dependent Claim
24 words
An imaging member in accordance with claim 1 wherein A, B or Z is alkylene group of from 1 to about 20 carbon atoms.
Claim 8
Dependent Claim
24 words
An imaging member in accordance with claim 1 wherein A B, or Z is arylene group of from 6 to about 30 carbon atoms.
Claim 9
Dependent Claim
25 words
An imaging member in accordance with claim 1 wherein B or Z is ether or polyether segment containing from 2 to about 30 carbon atoms.
Claim 10
Dependent Claim
28 words
An imaging member in accordance with claim 1 wherein R is methyl, ethyl, propyl, or butyl, and Ar is phenyl, tolyl, anisyl, ethylphenyl, propylphenyl, xylyl, halophenyl, or alkylthiophenyl.
Claim 11
Dependent Claim
28 words
An imaging member in accordance with claim 4 wherein R and Ar are selected from a group consisting of phenyl, tolyl, anisyl, ethylphenyl, propylphenyl, xylyl, halophenyl, and alkylthiophenyl.
Claim 12
Dependent Claim
67 words
An imaging member in accordance with claim 1 wherein the hole transporting polymer is represented by polyurethanes of Formulas II, III, IV, V, VI, VII, VIII, IX, X, XI or XII, wherein Ph is phenyl; x and y represent mole fraction numbers wherein x is greater than 0 and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 13
Dependent Claim
29 words
An imaging member in accordance with claim 1 wherein the photogenerating layer is comprised of metal free phthalocyanines, metal phthalocyanines, vanadyl phthalocyanines, selenium, selenium alloys, perylene or squaraine pigments.
Claim 14
Dependent Claim
20 words
An imaging member in accordance with claim 1 wherein the photogenerating layer is comprised of amorphous selenium, or trigonal selenium.
Claim 15
Dependent Claim
18 words
An imaging member in accordance with claim 12 wherein the photogenerating pigment is dispersed in a resinous binder.
Claim 16
Dependent Claim
32 words
An imaging member in accordance with claim 1 wherein the hole transporting polyurethane is dispersed in a resinous binder in an amount of from about 25 to about 75 percent by weight.
Claim 17
Dependent Claim
33 words
An imaging member in accordance with claim 1 wherein the charge transporting layer is doped with a charge transport molecule in an amount of from about 1 to about 50 percent by weight.
Claim 18
Dependent Claim
12 words
An imaging member in accordance with claim 1 containing a supporting substrate.
Claim 19
Dependent Claim
18 words
An imaging member in accordance with claim 17 wherein the supporting substrate is aluminum, nickel, or metallized Mylar.
Claim 20
Dependent Claim
37 words
An imaging method which comprises generating an electrostatic latent image on the imaging member of claim 1, followed by developing this image, subsequently transferring the image to a suitable substrate, and optionally, permanently affixing the image thereto.
Claim 21
Dependent Claim
78 words
A method of imaging in accordance with claim 19 wherein the hole transporting polymer for the imaging member is selected from the group consisting of polyurethanes represented by the Formulas II, III, IV, V, VI, VII, VIII, IX, X, XI or XII, wherein Ph is phenyl; x and y represent mole fraction numbers wherein x is greater than 0 and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 22
Dependent Claim
38 words
A printing method which comprises generating a latent image on the member of claim 1 with laser scanning, followed by developing this image, subsequently transferring the image to a suitable substrate, and optionally, permanently affixing the image thereto.
Claim 23
Dependent Claim
17 words
An imaging member in accordance with claim 1 containing a charge blocking layer, and an adhesive layer.
Claim 24
Dependent Claim
68 words
The polyurethanes of the following formula: ##STR7## wherein A, B and Z are independently selected from the group of bifunctional linkages; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y represent mole fraction numbers wherein x is greater than 0 and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 25
Dependent Claim
68 words
The polyurethanes of the following formula: ##STR7## wherein A, B and Z are independently selected from the group of bifunctional linkages; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y represent mole fraction numbers wherein x is greater than 0 and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 26
Dependent Claim
21 words
A polyurethane in accordance with claim 23 wherein A, B, and Z are alkylene, arylene, substituted arylene, ether or a polyether.
Claim 27
Dependent Claim
19 words
A polyurethane in accordance with claim 23 wherein n is a number of from about 5 to about 1,000.
Claim 28
Dependent Claim
63 words
A charge transport polyurethane selected from the group consisting of the polyurethanes represented by Formulas II, III, IV, V, VI, VII, VIII, IX, X, XI or XII, wherein Ph is phenyl; x and y represent mole fraction numbers wherein x is greater than 0 and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 29
Dependent Claim
63 words
A charge transport polyurethane selected from the group consisting of the polyurethanes represented by Formulas II, III, IV, V, VI, VII, VIII, IX, X, XI or XII, wherein Ph is phenyl; x and y represent mole fraction numbers wherein x is greater than 0 and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 30
Dependent Claim
19 words
An imaging member in accordance with claim 1 wherein the transport polyurethanes are doped with a charge transport compound.
Claim 31
Dependent Claim
18 words
An imaging member in accordance with claim 1 wherein the transport polyurethanes are dispersed in a resin binder.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
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