US4273846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging member having a charge transport layer of a terphenyl diamine and a polycarbonate resin
Assignee: Xerox Corp
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Filing: 1979-11-23
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Granted: 1981-06-16
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Expires: 1999-11-23
Abstract
Abstract An imaging member comprising a charge generation layer comprising a layer of photoconductive material and a contiguous charge transport layer of a polycarbonate resin material having dispersed therein from about 25 to about 75 percent by weight of one or more diamine compound having the general formula: ##STR1## wherein X 1 and X 2 are independently selected from the group consisting of a lower alkyl group having from 1 to about 4 carbon atoms, chlorine in the ortho, meta or para position, a para phenyl group and combinations thereof.
Inventors
- 👤 Damodar M. Pai
- 👤 S. Richard Turner
- 👤 John F. Yanus
- 👤 Dale S. Renfer
- 👤 Milan Stolka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:47
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/008; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/06144; G03G5/061446
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
An imaging member comprising a charge generation layer comprising a layer of photoconductive material and a contiguous charge transport layer of an electrically inactive polycarbonate resin material having dispersed therein from about 25 to about 75 percent by weight of one or more diamine compound having the general formula: ##STR3## wherein X 1 and X 2 are independently selected from the group consisting of a lower alkyl group having from 1 to about 4 carbon atoms, chlorine in the ortho, meta or para position, a para phenyl group and combinations thereof, said photoconductive layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially nonabsorbing in the spectral region at which the photoconductive layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive layer and transporting said holes through said charge transport layer.
Claim 2
Dependent Claim
151 words
An imaging member comprising a charge generation layer comprising a layer of photoconductive material and a contiguous charge transport layer of an electrically inactive polycarbonate resin material having dispersed therein from about 25 to about 75 percent by weight of one or more diamine compound having the general formula: ##STR3## wherein X 1 and X 2 are independently selected from the group consisting of a lower alkyl group having from 1 to about 4 carbon atoms, chlorine in the ortho, meta or para position, a para phenyl group and combinations thereof, said photoconductive layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially nonabsorbing in the spectral region at which the photoconductive layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive layer and transporting said holes through said charge transport layer.
Claim 3
Dependent Claim
20 words
The member of claim 1 wherein the polycarbonate resin has a molecular weight of from about 20,000 to about 120,000.
Claim 4
Dependent Claim
11 words
The member of claim 2 wherein the polycarbonate is poly(4,4"-isopropylidene-diphenylene carbonate).
Claim 5
Dependent Claim
20 words
The member according to claim 3 wherein the polycarbonate has a molecular weight between from about 25,000 to about 45,000.
Claim 6
Dependent Claim
20 words
The member according to claim 3 wherein the polycarbonate has a molecular weight of from about 50,000 to about 120,000.
Claim 7
Dependent Claim
35 words
The member of claim 1 wherein the photoconductive material is selected from the group consisting of amorphous selenium, trigonal selenium, and selenium alloys selected from the group consisting of selenium-tellurium, selenium-tellurium-arsenic, selenium-arsenic and mixtures thereof.
Claim 8
Dependent Claim
35 words
The member of claim 5 wherein the photoconductive material is selected from the group consisting of amorphous selenium, trigonal selenium, and selenium alloys selected from the group consisting of selenium-tellurium, selenium-tellurium-arsenic, selenium-arsenic and mixtures thereof.
Claim 9
Dependent Claim
11 words
The member of claim 7 wherein the diamine compound is N,N'-diphenyl-N,N'-bis(3-methylphenyl)[p-terphenyl]-4,4"-diamine.
Claim 10
Dependent Claim
11 words
The member of claim 7 wherein the diamine compound is N,N'-bis(2-methylphenyl)-N,N'-bis[4-(1-butyl)phenyl]-[p-terphenyl]-4,4"-diamine.
References Cited (Backward Citations)
US4047949A
Cited
US4078925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |