Patent US4517271A successfully refreshed from Google Patents.
US4517271A
Expired / Lapsed
US
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Electrophotographic CdS photosensitive member with acrylic resin binder
Assignee: Canon Inc
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Filing: 1984-03-01
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Granted: 1985-05-14
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Expires: 2004-03-01
Abstract
Abstract An electrophotographic photosensitive member has a photoconductive layer composed of cadmium sulfide bonded with a binder resin which is an acrylic resin having a glass transition point of 15° to 70° C. and an acid value of 10-40.
Inventors
- 👤 Masaaki Hirooka
- 👤 Keiji Kubo
- 👤 Toshiyuki Yoshihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:59
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0532; G03G5/0546
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
An electrophotographic photosensitive member which comprises a photoconductive layer comprising cadmium sulfide bonded with a binder resin, and an insulating layer laid on said photoconductive layer, characterized in that said binder resin is an acrylic resin not labile to moisture having a glass transition point of 15° to 70° C., an acid valve of 10 to 40, and a number average molecular weight of 10,000 or more.
Claim 2
Dependent Claim
67 words
An electrophotographic photosensitive member which comprises a photoconductive layer comprising cadmium sulfide bonded with a binder resin, and an insulating layer laid on said photoconductive layer, characterized in that said binder resin is an acrylic resin not labile to moisture having a glass transition point of 15° to 70° C., an acid valve of 10 to 40, and a number average molecular weight of 10,000 or more.
Claim 3
Dependent Claim
17 words
An electrophotographic photosensitive member of claim 1, wherein the glass transition point is 40° to 60° C.
Claim 4
Dependent Claim
15 words
An electrophotographic photosensitive member of claim 1, wherein the acid value is 10 to 30.
Claim 5
Dependent Claim
17 words
An electrophotographic photosensitive member of claim 1, wherein the glass transition point is 20° to 58° C.
Claim 6
Dependent Claim
15 words
An electrophotographic photosensitive member of claim 1, wherein the acid value is 12 to 29.
Claim 7
Dependent Claim
25 words
An electrophotographic photosensitive member of claim 1, wherein the glass transition point is 20° to 58° C. and the acid value is 12 to 29.
References Cited (Backward Citations)
CA805616A
Cited
US3508961A
Cited
US3649263A
Cited
US4252883A
Cited
US4105448A
Cited
US4335195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |