US3725058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual layered photoreceptor employing selenium sensitizer
Assignee: Panasonic Holdings Corp
•
Filing: 1969-12-30
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Granted: 1973-04-03
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Expires: 1989-12-30
Abstract
Abstract An electrophotographic photosensitive plate is composed of an electrically conducting plate having adjacent thereto a vitreous selenium layer, said layer having adjacent thereto a layer of organic photoconductive insulating material which is substantially non-light sensitive in the visible ray region.
Inventors
- 👤 Y Hayashi
- 👤 M Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:56
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
17 words
An electrophotographic plate according to claim 1 wherein said top layer comprises a compound of the formula:
Claim 2
Dependent Claim
16 words
An electrophotographic plate according to claim 1, said top layer consisting essentially of a brominated poly-N-vinycarbazole.
Claim 3
Dependent Claim
16 words
A reusable electrophotographic plate accordinG to claim 1 wherein said top layer consists essentially of polyacenaphthylene.
Claim 4
Dependent Claim
16 words
A reusable electrophotographic plate according to claim 1 wherein said top layer consists essentially of poly-9-(4-pentenyl)-carbazole.
Claim 5
Dependent Claim
15 words
An electrophotographic plate according to claim 1, wherein said top layer consists essentially of poly-9-(5-hexyl)-carbazole.
Claim 6
Dependent Claim
15 words
An electrophotographic plate according to claim 1, wherein said top layer consists essentially of poly-3-aminocarbazole.
Claim 7
Dependent Claim
15 words
An electrophotographic plate according to claim 1, wherein said top layer consists essentially of poly-N-vinylcarbazole.
Claim 8
Dependent Claim
20 words
An electrophotographic plate according to claim 1, wherein said top layer consists essentially of a copolymer of N-vinylcarbazole and methylacrylate.
Claim 9
Dependent Claim
15 words
An electrophotographic plate according to claim 1, wherein said top layer consists essentially of poly-9-vinylanthracene.
Claim 10
Dependent Claim
37 words
An electrophotographic plate according to claim 2, wherein said top layer further contains polycarbonate resin in an amount of 10 to 50 weight percent to the total amount of said top layer member and said polycarbonate resin.
Claim 11
Dependent Claim
37 words
An electrophotographic plate according to claim 3, wherein said top layer further contains polycarbonate resin in an amount of 10 to 50 weight percent to the total amount of said top layer member and said polycarbonate resin.
Claim 12
Dependent Claim
37 words
An electrophotographic plate according to claim 8, wherein said top layer further contains polycarbonate resin in an amount of 10 to 50 weight percent to the total amount of said top layer member and said polycarbonate resin.
References Cited (Backward Citations)
US3037861A
Cited
US3159483A
Cited
US3283309A
Cited
US3291600A
Cited
US3394001A
Cited
US3312547A
Cited
US3443937A
Cited
US3338710A
Cited
US3573906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |