Patent US4835079A successfully refreshed from Google Patents.
US4835079A
Expired / Lapsed
US
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Electrophotographic photosensitive member and electrophotographic process using the same
Assignee: Canon Inc
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Filing: 1988-08-23
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Granted: 1989-05-30
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Expires: 2008-08-23
Abstract
Abstract An electrophotographic photosensitive member comprising an organic photoconductive material has a structure that a charge transport layer containing a charge transporting material and a binder and a charge generation layer containing a charge generating material and a binder are laminated in succession in this order on a conductive substrate. The weight ratio of said charge transporting material to said binder in said charge transport layer is not less than 12/10 and said charge generation layer contains a charge transporting material.
Inventors
- 👤 Naoto Fujimura
- 👤 Kiyoshi Sakai
- 👤 Masami Okunuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:39
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/047
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
An electrophotographic photosensitive member which comprises an organic photoconductive material comprising a charge transport layer containing a charge transporting material and a binder and a charge generation layer containing a charge generating material and a binder laminated in succession in this order on a conductive substrate, the weight ratio of said charge transporting material to said binder in said charge transport layer being not less than 12/10 and said charge generation layer containing a charge transporting material and the content of said charge transporting material in said charge generation layer being 10-70% by weight.
Claim 2
Dependent Claim
94 words
An electrophotographic photosensitive member which comprises an organic photoconductive material comprising a charge transport layer containing a charge transporting material and a binder and a charge generation layer containing a charge generating material and a binder laminated in succession in this order on a conductive substrate, the weight ratio of said charge transporting material to said binder in said charge transport layer being not less than 12/10 and said charge generation layer containing a charge transporting material and the content of said charge transporting material in said charge generation layer being 10-70% by weight.
Claim 3
Dependent Claim
18 words
An electrophotographic photosensitive member according to claim 1, wherein the thickness of said charge generation layer is 0.5-10μ.
Claim 4
Dependent Claim
18 words
An electrophotographic photosensitive member according to claim 2, wherein the thickness of said charge generation layer is 1-10μ.
Claim 5
Dependent Claim
16 words
An electrophotographic photosensitive member according to claim 1, wherein said conductive substrate is a conductive drum.
Claim 6
Dependent Claim
18 words
An electrophotographic photosensitive member according to claim 4, wherein said charge generation layer is formed by spray coating.
Claim 7
Dependent Claim
113 words
An electrophotographic process which comprises forming an electrostatic image by performing a positive charging treatment and image exposure to an electrophotographic photosensitive member which comprises an organic photoconductive material comprising a charge transport layer containing a charge transporting material and a binder and a charge generation layer containing a charge generating material and a binder laminated in succession in this order on a conductive substrate, the weight ratio of said charge transporting material to said binder in said charge transport layer being not less than 12/10 and said charge generation layer containing a charge transporting material and the content of said charge transporting material in said charge generation layer is 10-70% by weight.
Claim 8
Dependent Claim
113 words
An electrophotographic process which comprises forming an electrostatic image by performing a positive charging treatment and image exposure to an electrophotographic photosensitive member which comprises an organic photoconductive material comprising a charge transport layer containing a charge transporting material and a binder and a charge generation layer containing a charge generating material and a binder laminated in succession in this order on a conductive substrate, the weight ratio of said charge transporting material to said binder in said charge transport layer being not less than 12/10 and said charge generation layer containing a charge transporting material and the content of said charge transporting material in said charge generation layer is 10-70% by weight.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |