Patent US3881924A successfully refreshed from Google Patents.
US3881924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic photoconductive layer sensitized with trimethine compound
Assignee: Panasonic Holdings Corp
•
Filing: 1972-08-23
•
Granted: 1975-05-06
•
Expires: 1992-08-23
Abstract
Abstract WHEREIN R1 is hydrogen or phenyl; R2 is hydrogen, phenyl, 4-methoxyphenyl, naphthyl, 2-METHOXYNAPHTHYL (1) OR 4-METHOXYNAPHTHYL (1); R3 is hydrogen, methoxy, nitro or phenyl; R4 is hydrogen or methoxy; X is oxygen or sulfur atom; AND Y is perchlorate. The present invention relates to organic photoconductive layers responsive to long wavelengths comprising a combination of an organic photoconductor and a sensitizer having the following chemical formula.
Inventors
- 👤 Yoshinobu Murakami
- 👤 Kazuhisa Morimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:51
CPC Classifications
C; C07; C07D; C07D335/00; C07D335/04; C07D335/06; C07D311/00; C07D311/02; C07D311/04; C07D311/58; C07D311/64; C09; C09B; C09B23/00; C09B23/02; C09B23/06; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
AN ORGANIC PHOTOCONDUCTIVE LAYER COMPRISING A COMBINATION OF AN ORGANIC PHOTOCONDUCTOR AND A SENSITIZER HAVING THE FOLLOWING CHEMICAL FORMULA. (=X-(4-R3,6-R4-1,2-PHENYLENE)-C(-R2)=C(-R1)-)>C-CH=CHCH=C<(-X-(4-R3,6-R4-1,2-PHENYLENE)-C(-R2)=C(-R1)-) (+) . Y(-) WHEREIN R1 IS HYDROGEN OR PHENYL, R2 IS HYDROGEN, PHENYL, 4-METHOXYPHENYL, NAPHTHYL, 2-METHOXYNAPHTHYL (1) OR 4-METHOXYNAPHTHYL (1), R3 IS HYDROGEN OR METHOXY, R4 IS HYDROGEN OR METHOXY, X IS OXYGEN OR SULFUR ATOM, AND Y- IS A PERCHLORATE RADICAL, SAID COMBINATION COMPRISING 100 WEIGHT PARTS OF AN ORGANIC PHOTOCONDUCTOR AND 0.01 TO 5.0 WEIGHT PARTS OF A SENSITIZER.
Claim 2
Dependent Claim
81 words
AN ORGANIC PHOTOCONDUCTIVE LAYER COMPRISING A COMBINATION OF AN ORGANIC PHOTOCONDUCTOR AND A SENSITIZER HAVING THE FOLLOWING CHEMICAL FORMULA. (=X-(4-R3,6-R4-1,2-PHENYLENE)-C(-R2)=C(-R1)-)>C-CH=CHCH=C<(-X-(4-R3,6-R4-1,2-PHENYLENE)-C(-R2)=C(-R1)-) (+) . Y(-) WHEREIN R1 IS HYDROGEN OR PHENYL, R2 IS HYDROGEN, PHENYL, 4-METHOXYPHENYL, NAPHTHYL, 2-METHOXYNAPHTHYL (1) OR 4-METHOXYNAPHTHYL (1), R3 IS HYDROGEN OR METHOXY, R4 IS HYDROGEN OR METHOXY, X IS OXYGEN OR SULFUR ATOM, AND Y- IS A PERCHLORATE RADICAL, SAID COMBINATION COMPRISING 100 WEIGHT PARTS OF AN ORGANIC PHOTOCONDUCTOR AND 0.01 TO 5.0 WEIGHT PARTS OF A SENSITIZER.
Claim 3
Dependent Claim
50 words
An electrophotographic material comprising an electrically conductive support layer and photoconductive layer, the latter comprising a combination of photoconductive polymer and a sensitizer having the chemical formula according to claim 1, said combination comprisng 100 weight parts of an organic photoconductor and 0.01 to 5.0 weight parts of a sensitizer.
Claim 4
Dependent Claim
24 words
An electrophotographic material according to claim 2, wherein said photoconductive polymer is one member from thE group consisting of poly-N-vinylcarbazole, brominated poly-N-vinylcarbazole and polyacenaphthylene.
Claim 5
Dependent Claim
42 words
A transparent photoconductive layer comprising a combination of a photoconductive polymer and a sensitizer having the chemical formula according to claim 1, said combination comprising 100 weight parts of an organic photo conductor and 0.01 to 5.0 weight parts of a sensitizer.
Claim 6
Dependent Claim
24 words
A transparent photoconductive layer according to claim 4, wherein said photoconductive polymer is one member from the group consisting of poly-N-vinylcarbazole and brominated poly-N-vinylcarbazole.
References Cited (Backward Citations)
US3526502A
Cited
US3567438A
Cited
US3586500A
Cited
US3617268A
Cited
US3712811A
Cited
US3679406A
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 |