US3881926A
Expired / Lapsed
US
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Sensitized electrophotographic layers with a polymethine sentizing dye
Assignee: Agfa Gevaert AG
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Filing: 1973-03-19
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Granted: 1975-05-06
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Expires: 1993-03-19
Abstract
Abstract Electrophotographic recording materials are spectrally sensitized with a polymethine sensitizing dye containing a cyano group or a nitro group in the Alpha - and/or gamma -position of the methine chain.
Inventors
- 👤 Hans Ohlschlager
- 👤 Oskar Riester
- 👤 Theofiel Hubert Ghys
- 👤 Karel Eugeen Verhille
- 👤 Johannes Josephus Vanheertum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:44
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/0008; C09B23/005; C09B23/0058; C09B23/0041; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
43 words
AN ELECTROPHOTOGRAPHIC RECORDING MATERIAL HAVING A LAYER SUPPORT AND AT LEAST ONE SENITIZED PHOTOCONDUCTIVE LAYER CONTAINING A PHOTOCONDUCTOR, A SENSTIZING DYE, WHEREIN THE IMPROVEMENT COMPRISES A PHOTOCONDUCTOR SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, L-ETHYL-3-PHENYL-7DIETHYLAMINO-2-(IH)-QUINOLINE, THE PHOTOCONDUCTOR COMPOUND OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
43 words
AN ELECTROPHOTOGRAPHIC RECORDING MATERIAL HAVING A LAYER SUPPORT AND AT LEAST ONE SENITIZED PHOTOCONDUCTIVE LAYER CONTAINING A PHOTOCONDUCTOR, A SENSTIZING DYE, WHEREIN THE IMPROVEMENT COMPRISES A PHOTOCONDUCTOR SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, L-ETHYL-3-PHENYL-7DIETHYLAMINO-2-(IH)-QUINOLINE, THE PHOTOCONDUCTOR COMPOUND OF THE FOLLOWING FORMULA:
Claim 3
Dependent Claim
21 words
An electrophotographic recording material according to claim 1, characterised in that it contains as photoconductor zinc oxide embedded in a binder.
References Cited (Backward Citations)
US3666464A
Cited
US3782933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |