Claims
- 1. An electrophotographic photosensitive member, comprising: a support and a photosensitive layer disposed on the support,
- wherein said photosensitive layer contains a triphenylamine compound having at least two phenyl groups each substituted with two alkyl groups including at least one alkyl group located in meta-position in conjunction with nitrogen atom.
- 2. An electrophotographic photosensitive member, comprising: a support and a photosensitive layer disposed on the support,
- wherein said photosensitive layer contains a triphenylamine compound having at least two phenyl groups each substituted with three alkyl groups.
- 3. A member according to claim 2, wherein said three alkyl groups contain at least one alkyl group located in meta-position in conjunction with nitrogen atom.
- 4. A member according to claim 1 or 3, wherein said alkyl groups contain one alkyl group located in para-position in conjunction with nitrogen atom.
- 5. A member according to claim 1 or 2, wherein each of said alkyl groups has 1-4 carbon atoms.
- 6. A member according to claim 1 or 2, wherein said photosensitive layer contains a charge-generating substance comprising titanyl phthalocyanine represented by the following formula: ##STR17##
- 7. An electrophotographic apparatus, comprising: an electrophotographic photosensitive member according to claim 1, charging means for charging said electrophotographic photosensitive member, image-exposure means for exposing said electrophotographic photosensitive member to light to form an electrostatic latent image, and developing means for developing the electrostatic latent image formed on said electrophotographic photosensitive member with a toner.
- 8. A device unit, including: an electrophotographic photosensitive member according to claim 1 or 2 and at least one means selected from a charging means, a developing means, and a cleaning means;
- wherein said photosensitive member, and said at least one means selected from the charging means, the developing means, and the cleaning means are integrally supported to form a single unit, which can be removably attached to an apparatus body.
- 9. A member according to claim 1, wherein said photosensitive layer contains an azo pigment.
- 10. A member according to claim 1, further comprising a protective layer on said photosensitive layer.
- 11. An apparatus according to claim 7, wherein said photosensitive layer contains an azo pigment.
- 12. An apparatus according to claim 7, wherein said electrophotographic photosensitive member comprises a protective layer on said photosensitive layer.
- 13. An apparatus according to claim 7, wherein said developing means is a reversal developing means.
- 14. A unit according to claim 8, wherein said photosensitive layer contains an azo pigment.
- 15. A unit according to claim 8, wherein said electrophotographic photosensitive member comprises a protective layer on said photosensitive layer.
- 16. A unit according to claim 8, wherein said developing means is a reversal developing means.
- 17. An electrophotographic apparatus, comprising:
- an electrophotographic photosensitive member according to claim 2, charging means for charging said electrophotographic photosensitive member, exposure means for exposing said electrophotographic photosensitive member to light to form an electrostatic latent image and developing means for developing the electrostatic latent image formed on said electrophotographic photosensitive member with a toner.
- 18. A device unit, including:
- an electrophotographic photosensitive member according to claim 2 and at least one means selected from a charging means, a developing means and a cleaning means;
- wherein said photosensitive member and said at least one means selected from the charging means, the developing means and the cleaning means are integrally supported to form a single unit, which can be removably attached to an apparatus body.
Priority Claims (1)
Number |
Date |
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5-183185 |
Jun 1993 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/266,520 filed Jun. 28, 1994, now abandoned.
US Referenced Citations (8)
Number |
Name |
Date |
Kind |
4931371 |
Matsumoto et al. |
Jun 1990 |
|
4963450 |
Miyazaki et al. |
Oct 1990 |
|
5024912 |
Neishi et al. |
Jun 1991 |
|
5079118 |
Kikuchi et al. |
Jan 1992 |
|
5202207 |
Kanemaru et al. |
Apr 1993 |
|
5262261 |
Kikuchi et al. |
Nov 1993 |
|
5356742 |
Shimada et al. |
Oct 1994 |
|
5382692 |
Shimada et al. |
Jan 1995 |
|
Foreign Referenced Citations (10)
Number |
Date |
Country |
318916 |
Jun 1989 |
EPX |
376313 |
Jul 1990 |
EPX |
52-4188 |
Feb 1977 |
JPX |
54-151955 |
Nov 1979 |
JPX |
55-42380 |
Oct 1980 |
JPX |
58-198043 |
Nov 1983 |
JPX |
1-100151 |
Apr 1989 |
JPX |
3-114058 |
Jun 1989 |
JPX |
55-52063 |
Apr 1990 |
JPX |
5-53349 |
Mar 1993 |
JPX |
Continuations (1)
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Number |
Date |
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Parent |
266520 |
Jun 1994 |
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