Patent US4474865A successfully refreshed from Google Patents.
US4474865A
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Layered photoresponsive devices
Assignee: Xerox Corp
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Filing: 1983-08-08
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Granted: 1984-10-02
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Expires: 2003-08-08
Abstract
Abstract An improved layered photoresponsive device comprised of a supporting substrate, a photogenerating layer, and in contact with the photogenerating layer an electron transporting layer comprised of compounds of the following formula: ##STR1## wherein X and Y are cyano groups or alkoxycarbonyl groups A, B, and W are electron withdrawing groups independently selected from the group consisting of acyl, alkoxycarbonyl, nitro, alkylaminocarbonyl, and derivatives thereof, m is a number of from 0 to 2, and n is the number 0 or 1.
Inventors
- 👤 Beng S. Ong
- 👤 Barkev Keoshkerian
- 👤 Thomas B. McAneney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:28
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0618; G03G5/0609
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
79 words
An improved layered photoresponsive device comprised of a supporting substrate, a photogenerating layer, and in contact with the photogenerating layer an electron transporting layer comprised of compounds of the following formula: ##STR6## wherein X and Y are cyano groups or alkoxycarbonyl groups A, B, and W are electron withdrawing groups independently selected from the group consisting of acyl, alkoxycarbonyl, nitro and, alkylaminocarbonyl, m is a number of from 0 to 2, and n is the number 0 or 1.
Claim 2
Dependent Claim
79 words
An improved layered photoresponsive device comprised of a supporting substrate, a photogenerating layer, and in contact with the photogenerating layer an electron transporting layer comprised of compounds of the following formula: ##STR6## wherein X and Y are cyano groups or alkoxycarbonyl groups A, B, and W are electron withdrawing groups independently selected from the group consisting of acyl, alkoxycarbonyl, nitro and, alkylaminocarbonyl, m is a number of from 0 to 2, and n is the number 0 or 1.
Claim 3
Dependent Claim
56 words
An improved layered photoresponsive device in accordance with claim 1 wherein X and Y are selected from the groups COR, COOR, or CONR 1 R 2 , wherein R is an alkyl group, an alkyl group substituted with alkoxy, an aryl group, or carboxcylic group, wherein R 1 and R 2 are hydrogen, alkyl, or aryl.
Claim 4
Dependent Claim
28 words
An improved photoresponsive device in accordance with claim 2 wherein the alkyl group contains from about 1 to about 20 carbon atoms, and the aryl group is phenyl.
Claim 5
Dependent Claim
16 words
An improved photoresponsive device in accordance with claim 1 wherein A, B, and W are nitro.
Claim 6
Dependent Claim
45 words
An improved photoresponsive device in accordance with claim 1 wherein A, B, and W, are independently selected from acyl of the formula RCO, or alkoxycarbonyl of the formula COOR, wherein R is an alkyl group of from 1 carbon atom to about 20 carbon atoms.
Claim 7
Dependent Claim
18 words
An improved photoresponsive device in accordance with claim 5 wherein acyl is acetyl, propionyl, isovaleryl, anisoyl, or stearoyl.
Claim 8
Dependent Claim
19 words
An improved photoresponsive device in accordance with claim 1 wherein the alkoxycarbonyl is methoxycarbonyl, ethoxycarbonyl, isopropoxylcarbonyl, butoxycarbonyl, or phenethoxycarbonyl.
Claim 9
Dependent Claim
19 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting material is of the formula: ##STR7##
Claim 10
Dependent Claim
19 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting material is of the formula: ##STR8##
Claim 11
Dependent Claim
19 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting material is of the formula: ##STR9##
Claim 12
Dependent Claim
19 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting material is of the formula: ##STR10##
Claim 13
Dependent Claim
19 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting material is of the formula: ##STR11##
Claim 14
Dependent Claim
30 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting material is of the formula: ##STR12## where m is 1 or 2, t is zero or 1.
Claim 15
Dependent Claim
19 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting material is of the formula: ##STR13##
Claim 16
Dependent Claim
19 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting material is of the formula: ##STR14##
Claim 17
Dependent Claim
19 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting material is of the formula: ##STR15##
Claim 18
Dependent Claim
28 words
An improved photoresponsive device in accordance with claim 1 wherein the photogenerating layer is comprised of selenium, selenium alloys, squarilium pigments, metal phthalocyanines metal-free phthalocyanines, or vanadyl phthalocyanines.
Claim 19
Dependent Claim
18 words
An improved photoresponsive device in accordance with claim 1 wherein the photogenerating layer is comprised of trigonal selenium.
Claim 20
Dependent Claim
43 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting layer is of a thickness of from about 2 microns to about 100 microns, and the photogenerating layer ranges in thickness of from about 0.05 microns to about 20 microns.
Claim 21
Dependent Claim
26 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting compounds or the photogenerating composition are dispersed in an inactive resinous binder composition.
Claim 22
Dependent Claim
25 words
An improved photoresponsive device in accordance with claim 20 wherein the resinous binder is a polyester, a polycarbonate, an epoxy, polyamide, polysiloxane, or vinyl polymer.
Claim 23
Dependent Claim
53 words
An improved photoresponsive device in accordance with claim 21 wherein the electron transporting molecule is present in an an amount of about 10 percent by weight to about 75 percent by weight, and the resinous binder is present in an amount of about 25 percent by weight to about 90 percent by weight.
Claim 24
Dependent Claim
53 words
An improved photoresponsive device in accordance with claim 21 wherein the photogenerating composition is present in an amount of from about 10 percent by weight to about 100 percent by weight, and the resinous binder is present in an amount of from about zero percent by weight to about 90 percent by weight.
Claim 25
Dependent Claim
34 words
An improved photoresponsive device in accordance with claim 1 wherein the electron transporting layer is optionally doped with electron donor materials in concentrations of from about 1 percent to about 30 percent by weight.
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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) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |