| (19) |
 |
|
(11) |
EP 0 430 235 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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16.10.1991 Bulletin 1991/42 |
| (43) |
Date of publication A2: |
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05.06.1991 Bulletin 1991/23 |
| (22) |
Date of filing: 29.11.1990 |
|
| (51) |
International Patent Classification (IPC)5: G03G 5/06 |
|
| (84) |
Designated Contracting States: |
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CH DE ES FR GB IT LI NL |
| (30) |
Priority: |
30.11.1989 JP 311205/89
30.01.1990 JP 21027/90
|
| (71) |
Applicant: MITA INDUSTRIAL CO. LTD. |
|
Osaka-shi
Osaka 540 (JP) |
|
| (72) |
Inventors: |
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- Mizuta, Yasufumi
Kishiwada-shi,
Osaka (JP)
- Hanatani, Yasuyuki
Sakai-shi,
Osaka (JP)
- Nakatani, Kaname
Osaka-shi,
Osaka (JP)
- Yoshida, Takeshi
Kawachinagano-shi,
Osaka (JP)
- Sakuma, Tadashi
Sakai-shi,
Osaka (JP)
- Tanaka, Nariaki
Kishiwada-shi,
Osaka (JP)
- Kawahara, Akihiko
Higashi Osaka-shi,
Osaka (JP)
|
| (74) |
Representative: Hansen, Bernd, Dr. Dipl.-Chem. et al |
|
Hoffmann, Eitle & Partner
Patent- und Rechtsanwälte,
Postfach 81 04 20
81904 München
81904 München (DE) |
|
| |
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| (54) |
Electrophotographic photosensitive element |
(57) An electrophotographic photosensitive element comprising an electrically conductive
substrate having formed, first, a charge transfer layer, second, a charge generating
layer, and, third, a surface protective layer. The charge transfer layer contains
a butadiene derivative and/or a hydrazone compound. The charge generating layer contains
a hydrazone compound as a charge transfer material in addition to a charge generating
material. The charge generating layer is formed by coating the charge transfer layer
with an alcoholic solvent in which is dissolved the coating composition of the charge
generating layer. The surface protective layer is formed on the surface of the charge
generating layer.