US4518671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic photosensitive Se or Se alloy doped with oxygen
Assignee: Canon Inc
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Filing: 1983-09-19
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Granted: 1985-05-21
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Expires: 2003-09-19
Abstract
Abstract An electrophotographic photosensitive member has a selenium type photoconductive layer containing 8000 ppm or less oxygen based on selenium. The member is free from a fatigue due to repeated use.
Inventors
- 👤 Teruo Misumi
- 👤 Yoichi Osato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:45
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08207
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
An electrophotographic photosensitive member free from fatigue due to repeated use which consists essentially of a photoconductive layer comprising selenium or a selenium alloy and containing doped oxygen in an effective amount up to 8000 ppm or less based on selenium and being prepared by vapor depositing a member selected from the group consisting of selenium or a selenium alloy, said member having oxygen doped therein.
Claim 2
Dependent Claim
66 words
An electrophotographic photosensitive member free from fatigue due to repeated use which consists essentially of a photoconductive layer comprising selenium or a selenium alloy and containing doped oxygen in an effective amount up to 8000 ppm or less based on selenium and being prepared by vapor depositing a member selected from the group consisting of selenium or a selenium alloy, said member having oxygen doped therein.
Claim 3
Dependent Claim
17 words
An electrophotographic photosensitive member according to claim 1 in which the amount of oxygen is 20-8000 ppm.
Claim 4
Dependent Claim
19 words
An electrophotographic photosensitive member according to claim 1 in which an insulating layer is disposed on said photoconductive layer.
References Cited (Backward Citations)
US3077386A
Cited
US3685989A
Cited
SU619026A1
Cited
JPS549931A
Cited
JPS5745551A
Cited
US4370399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |