Patent US4232103A successfully refreshed from Google Patents.
US4232103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenyl benzotriazole stabilized photosensitive device
Assignee: Xerox Corp
•
Filing: 1979-08-27
•
Granted: 1980-11-04
•
Expires: 1999-08-27
Abstract
Abstract An imaging member comprising a hole generation layer and a contiguous hole transport layer, said generation layer comprising a photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes, said hole transport layer comprising a transparent electrically inactive polycarbonate resinous material having dispersed therein from about 25 to about 75% by weight of the composition of one or more of the following diamines: ##STR1## and wherein X is independently selected from the group consisting of an alkyl group having from 1 to about 4 carbon atoms and chlorine in the ortho, meta or para position, said transport layer also containing a chlorine-containing organic solvent, and a stabilizing proportion of a substituted or unsubstituted 2-(2'-hydroxyphenyl)-benzotriazole.
Inventors
- 👤 William W. Limburg
- 👤 Damodar M. Pai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:41
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C07D249/20; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/06144; G03G5/061443
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
In an imaging member comprising a hole generation layer and a contiguous hole transport layer, said generation layer comprising a photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes, said hole transport layer comprising a transparent electrically inactive polycarbonate resinous material having dispersed therein from about 25 to about 75% by weight of the composition of one or more of the following diamines: ##STR4## and wherein X is independently selected from the group consisting of an alkyl group having from 1 to about 4 carbon atoms and chlorine in the ortho, meta or para position, said transport layer also containing a chlorine-containing organic solvent in an amount less than about 3% by weight of the transport layer, the improvement consisting of stabilizing said transport layer against the deleterious effects of ultraviolet light by the presence in said transport layer of a stabilizing proportion of a substituted or unsubstituted 2-(2'-hydroxyphenyl)-benzotriazole.
Claim 2
Dependent Claim
154 words
In an imaging member comprising a hole generation layer and a contiguous hole transport layer, said generation layer comprising a photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes, said hole transport layer comprising a transparent electrically inactive polycarbonate resinous material having dispersed therein from about 25 to about 75% by weight of the composition of one or more of the following diamines: ##STR4## and wherein X is independently selected from the group consisting of an alkyl group having from 1 to about 4 carbon atoms and chlorine in the ortho, meta or para position, said transport layer also containing a chlorine-containing organic solvent in an amount less than about 3% by weight of the transport layer, the improvement consisting of stabilizing said transport layer against the deleterious effects of ultraviolet light by the presence in said transport layer of a stabilizing proportion of a substituted or unsubstituted 2-(2'-hydroxyphenyl)-benzotriazole.
Claim 3
Dependent Claim
62 words
The member of claim 1 wherein the benzotriazole has the following general formula: ##STR5## wherein R 1 is hydrogen or a C 1 -C 5 alkyl, an aryl, alkaryl, aralkyl, sulfhydryl, NO 2 or a halogen; and R 2 and R 3 are independently selected from the group consisting of hydrogen, a C 1 -C 5 alkyl, aryl, alkaryl or aralkyl group.
Claim 4
Dependent Claim
24 words
The member of claim 2 wherein said transport layer is stabilized by a member selected from the group consisting of 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole; 2-(2'-hydroxy-5'-methylphenyl)-benzotriazole; and 2-(2'-hydroxy-3'-di-tert-butylphenyl)-benzotriazole.
Claim 5
Dependent Claim
17 words
The method of claim 3 wherein said photoconductive material is trigonal selenium and said diamine is N,N'-diphenyl-N,N'-bis(3-methylphenyl)-[1,1'-biphenyl]-4,4'-diamine.
Claim 6
Dependent Claim
22 words
The member of claim 3 wherein the benzotriazole compound is present in from about 0.1-10 percent by weight of the transport molecule.
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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |