US3647431A
Expired / Lapsed
US
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Substituted bis(p-diakylaminophenyl) methane photoconductors
Assignee: Eastman Kodak Co
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Filing: 1969-10-01
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Granted: 1972-03-07
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Expires: 1989-10-01
Abstract
Abstract Organic photoconductors for electrophotographic elements are described. These photoconductors are bis-(pdialkylaminophenyl)methanes having a third substituent comprising an unsaturated group having two or four carbon atoms wherein an omega -carbon atom of the third substituent is fully substituted by aryl group(s), heterocyclic group(s) or combinations thereof.
Inventors
- 👤 Louis J Rossi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/14; C07D333/20; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/06144; G03G5/06147; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0629; G03G5/0664; G03G5/0666; G03G5/0668
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
16 words
The electrophotographic element of claim 1 wherein said photoconductive composition contains a sensitizer for said photoconductor.
Claim 2
Dependent Claim
16 words
The electrophotographic element of claim 1 wherein n 0 and R3 and R4 are aryl groups.
Claim 3
Dependent Claim
16 words
The electrophotographic element of claim 1 wherein n 1 and R3 and R4 are aryl groups.
Claim 4
Dependent Claim
17 words
The electrophotographic element of claim 1 wherein n is 0 and R4 and R3 are phenyl groups.
Claim 5
Dependent Claim
26 words
The electrophotographic element of claim 1 wherein n is 0, and R3 is a phenyl group and R4 and R5 taken together are a covalent bond.
Claim 6
Dependent Claim
60 words
An electrophotographic element comprising a support having coated thereon a photoconductive composition comprising a. from about 10 to about 60 percent by weight based on said photoconductive composition of 3,3-diphenylallylidene-4,4''-bis(N,N-diethyl-m-toluidine), b. a film-forming polymeric binder for said photoconductor and c. 0.005 percent to about 5 percent by weight based on said photoconductive composition of a sensitizer for said photoconductive composition.
Claim 7
Dependent Claim
61 words
An electrophotographic element comprising a support having coated thereon a photoconductive composition comprising a. from about 10 to about 60 percent by weight based on said photoconductive composition of 3-phenyl-2-propynylidene 4,4''-bis(N,N-diethyl-m-toluidine), b. a film-forming polymeric binder for said photoconductor and c. 0.005 percent to about 5 percent by weight based on said photoconductive composition of a sensitizer for said photoconductive composition.
Claim 8
Dependent Claim
15 words
A photoconductive composition comprising a polymeric film-forming binder and an organic photoconductor having the formula:
Claim 9
Dependent Claim
33 words
In an electrophotographic process where an electrostatic charge pattern is formed on an electrophotographic element, the improvement characterized in that said electrophotographic element has a photoconductive layer comprising the composition of claim 9.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |