US3867144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrally sensitized electrophotographic materials
Assignee: RCA Corp
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Filing: 1971-10-28
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Granted: 1975-02-18
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Expires: 1991-10-28
Abstract
Abstract A spectrally sensitized electrophotographic recording element includes a photoconductive layer comprising zinc oxide and a small quantity of at least one azomethine dye that has either an o,o''-dihydroxy or an o-hydroxy-o''-mercapto azomethine structure.
Inventors
- 👤 Wendell Maurice Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:39
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/09; G03G5/06; G03G5/0601; G03G5/0618; G03G5/062
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
22 words
SPECTRALLY SENSITIZED LIGHT-SENSITIVE MATERIAL COMPRISING A PHOTOCONDUCTOR AND AT LEAST ONE AZOMETHINE DYE HAVING AN 0,0'' DIHYDROXY OR AN O-HYDROXY-O''-MERCAPTO AZOMETHINE STRUCTURE.
Claim 2
Dependent Claim
22 words
SPECTRALLY SENSITIZED LIGHT-SENSITIVE MATERIAL COMPRISING A PHOTOCONDUCTOR AND AT LEAST ONE AZOMETHINE DYE HAVING AN 0,0'' DIHYDROXY OR AN O-HYDROXY-O''-MERCAPTO AZOMETHINE STRUCTURE.
Claim 3
Dependent Claim
25 words
SPECTRALLY SENSITIZED LIGHT-SENSITIVE MATERIAL AS DESCRIBED IN CLAIM 1, WHEREIN: SAID PHOTOCONDUCTOR IS ZINC OXIDE AND SAID AZOMETHINE DYE IS A ZINC AZOMETHINE DYE COMPLEX.
Claim 4
Dependent Claim
14 words
Spectrally sensitized electrophotographic material comprising a photoconductor and an azomethine dye having a structure
Claim 5
Dependent Claim
14 words
Spectrally sensitized electrophotographic material comprising a photoconductor and an azomethine dye having a structure
Claim 6
Dependent Claim
16 words
Spectrally sensitized electrophotographic material as described in claim 3 wherein: said photoconductor is photoconductive zinc oxide.
Claim 7
Dependent Claim
29 words
Spectrally sensitized light-sensitive material comprising a photoconductor of zinc oxide and at least one azomethine dye selected from the group consisting of azomethine dyes listed in Table I herein.
Claim 8
Dependent Claim
29 words
Spectrally sensitized light-sensitive material comprising a photoconductor of zinc oxide and at least one azomethine dye selected from the group consisting of azomethine dyes listed in Table I herein.
Claim 9
Dependent Claim
53 words
A spectrally sensitized electrophotographic recording element comprising a photoconductive layer of zinc oxide in a film-forming binder and a sensitizing amount up to about 0.5 percent by weight with respect to the weight of the zinc oxide of an azomethine dye selected from the group consisting of azomethine dyes in Table I herein.
Claim 10
Dependent Claim
53 words
A spectrally sensitized electrophotographic recording element comprising a photoconductive layer of zinc oxide in a film-forming binder and a sensitizing amount up to about 0.5 percent by weight with respect to the weight of the zinc oxide of an azomethine dye selected from the group consisting of azomethine dyes in Table I herein.
References Cited (Backward Citations)
US3600165A
Cited
US3622341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |