Patent US5389478A successfully refreshed from Google Patents.
US5389478A
Expired / Lapsed
US
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Electrophotographic photosensitive member, and electrophotographic apparatus, device unit, and facsimile machine employing the same
Assignee: Canon Inc
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Filing: 1993-08-18
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Granted: 1995-02-14
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Expires: 2013-08-18
Abstract
Abstract An electrophotographic photosensitive member has an electroconductive support, and a photosensitive layer formed thereon. The photosensitive layer contains a compound represented by the formula (1).
Inventors
- 👤 Akira Yoshida
- 👤 Koji Goto
- 👤 Fumio Sumino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:52
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0635; G03G5/0638
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
31 words
An electrophotographic photosensitive member comprising an electroconductive support, and a photosensitive layer formed thereon, the photosensitive layer containing a compound ##STR16## represented by the formulas (2) and (3) as follows: ##STR17##
Claim 2
Dependent Claim
31 words
An electrophotographic photosensitive member comprising an electroconductive support, and a photosensitive layer formed thereon, the photosensitive layer containing a compound ##STR16## represented by the formulas (2) and (3) as follows: ##STR17##
Claim 3
Dependent Claim
13 words
An electrophotographic photosensitive member according to claim 1, further comprising a subbing layer.
Claim 4
Dependent Claim
21 words
An electrophotographic photosensitive member according to claim 1, wherein said compound is a compound represented by the formula (2) below: ##STR18##
Claim 5
Dependent Claim
20 words
An electrophotographic photosensitive member according to claim 1, wherein said compound is a compound represented by the formula (3): ##STR19##
Claim 6
Dependent Claim
35 words
An electrophotographic photosensitive member according to claim 1, wherein the amount of said compound is 0 2 to 30% by weight based on the total weight of the layer to which said compound is added.
Claim 7
Dependent Claim
34 words
An electrophotographic photosensitive member according to claim 5, wherein the amount of said compound is 0.4 to 15% by weight based on the total weight of the layer to which said compound is added.
Claim 8
Dependent Claim
20 words
An electrophotographic photosensitive member according to claim 1, wherein said photosensitive layer comprises a charge-generating layer and a charge-transporting layer.
Claim 9
Dependent Claim
23 words
An electrophotographic photosensitive member according to claim 7, comprising an electroconductive support, a charge-generating layer and a charge-transporting layer in the order named.
Claim 10
Dependent Claim
23 words
An electrophotographic photosensitive member according to claim 7, comprising an electroconductive support, a charge-transporting layer and a charge-generating layer in the order named.
Claim 11
Dependent Claim
16 words
An electrophotographic photosensitive member according to claim 1, wherein said photosensitive layer is a single layer.
Claim 12
Dependent Claim
16 words
An electrophotographic photosensitive member according to claim 1, wherein said photosensitive layer has a protecting layer.
Claim 13
Dependent Claim
25 words
An electrophotographic photosensitive member according to claim 7, wherein said charge-transporting layer contains a compound selected from compounds represented by the formulas (2) and (3).
Claim 14
Dependent Claim
25 words
An electrophotographic photosensitive member according to claim 7, wherein said charge-generating layer contains a compound selected from compounds represented by the formulas (2) and (3).
Claim 15
Dependent Claim
25 words
An electrophotographic photosensitive member according to claim 8, wherein said charge-transporting layer contains a compound selected from compounds represented by the formulas (2) and (3).
Claim 16
Dependent Claim
25 words
An electrophotographic photosensitive member according to claim 11, wherein said protecting layer contains a compound selected from compounds represented by the formulas (2) and (3).
Claim 17
Dependent Claim
26 words
An electrophotographic photosensitive member according to claim 1, wherein said photosensitive layer comprises a charge-transporting substance having the oxidation potential of not less than 0.6 V.
Claim 18
Dependent Claim
19 words
An electrophotographic photosensitive member according to claim 1, wherein a surface layer of the photosensitive layer contains a lubricant.
Claim 19
Dependent Claim
30 words
An electrophotographic photosensitive member according to claim 17, wherein said lubricant is selected from the group consisting of powdery fluoro-resins, powdery polyolefin resins, powdery silicone resins and powdery fluorinated carbon.
Claim 20
Dependent Claim
14 words
An electrophotographic photosensitive member according to claim 18, wherein said lubricant is powdery fluoro-resins.
Claim 21
Dependent Claim
70 words
An electrophotographic apparatus comprising an electrophotographic photosensitive member, an image forming means for forming a latent image, a developing means for developing the formed latent image, and a transferring means for transferring a developed image to a transfer-receiving material, said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, the photosensitive layer contains a compound ##STR20## represented by the formulas (2) and (3) as follows: ##STR21##
Claim 22
Dependent Claim
70 words
An electrophotographic apparatus comprising an electrophotographic photosensitive member, an image forming means for forming a latent image, a developing means for developing the formed latent image, and a transferring means for transferring a developed image to a transfer-receiving material, said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, the photosensitive layer contains a compound ##STR20## represented by the formulas (2) and (3) as follows: ##STR21##
Claim 23
Independent Claim
99 words
A device unit comprising an electrophotographic photosensitive member and at least one selected from the group consisting of a charging means, a developing means and a cleaning means, said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, the photosensitive layer contains a compound ##STR22## represented by the formulas (2) and (3) as follows: ##STR23## said unit holding integrally the electrophotographic photosensitive member and the at least one selected from the group consisting of the charging means, the developing means and the cleaning means and being removable from the main body of an electrophotographic apparatus.
Claim 24
Independent Claim
99 words
A device unit comprising an electrophotographic photosensitive member and at least one selected from the group consisting of a charging means, a developing means and a cleaning means, said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, the photosensitive layer contains a compound ##STR22## represented by the formulas (2) and (3) as follows: ##STR23## said unit holding integrally the electrophotographic photosensitive member and the at least one selected from the group consisting of the charging means, the developing means and the cleaning means and being removable from the main body of an electrophotographic apparatus.
Claim 25
Dependent Claim
57 words
A fascimile machine comprising an electrophotographic apparatus and a means for receiving image information from a remote terminal, said electrophotographic apparatus comprising an electrophotographic photosensitive member, said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, said photosensitive layer containing a compound ##STR24## represented by the formulas (2) and (3) as follows: ##STR25##
Claim 26
Dependent Claim
57 words
A fascimile machine comprising an electrophotographic apparatus and a means for receiving image information from a remote terminal, said electrophotographic apparatus comprising an electrophotographic photosensitive member, said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, said photosensitive layer containing a compound ##STR24## represented by the formulas (2) and (3) as follows: ##STR25##
References Cited (Backward Citations)
US4055421A
Cited
EP0149802A2
Cited
US4680244A
Cited
EP0166230A1
Cited
US4760006A
Cited
FR2602064A1
Cited
US4877701A
Cited
JPS63159856A
Cited
EP0384354A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-13 | 1998-08-15 | 1999-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-13 | 2002-08-15 | 2003-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-13 | 2006-08-15 | 2007-02-14 | $7700.00 | Window Closed / Lapsed |