(19) |
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(11) |
EP 0 398 262 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
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13.03.1991 Bulletin 1991/11 |
(43) |
Date of publication A2: |
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22.11.1990 Bulletin 1990/47 |
(22) |
Date of filing: 15.05.1990 |
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(51) |
International Patent Classification (IPC)5: G03G 21/00 |
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(84) |
Designated Contracting States: |
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DE FR GB IT |
(30) |
Priority: |
16.05.1989 JP 123869/89
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(71) |
Applicant: CANON KABUSHIKI KAISHA |
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Tokyo (JP) |
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(72) |
Inventors: |
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- Fujimura, Naoto,
c/o Canon Kabushiki Kaisha
Ohta-ku,
Tokyo (JP)
- Yamazaki, Koji,
c/o Canon Kabushiki Kaisha
Ohta-ku,
Tokyo (JP)
- Sakai, Kiyoshi,
c/o Canon Kabushiki Kaisha
Ohta-ku,
Tokyo (JP)
- Sakakibara, Teigo,
c/o Canon Kabushiki Kaisha
Ohta-ku,
Tokyo (JP)
- Hirayama, Noriko,
c/o Canon Kabushiki Kaisha
Ohta-ku,
Tokyo (JP)
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(74) |
Representative: Bühling, Gerhard, Dipl.-Chem. et al |
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Patentanwaltsbüro
Tiedtke-Bühling-Kinne & Partner
Bavariaring 4 80336 München 80336 München (DE) |
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(54) |
Electrophotographic apparatus |
(57) An electrophotographic apparatus of the type in which a photosensitive member is
charged by atmospheric discharge, is equipped with an air filter including a substrate
comprising at least one metal selected from the group consisting of aluminum, iron,
aluminum alloy and iron alloy, and a coating layer formed on the substrate comprising
an ozone remover. The substrate is effective in removing NOx and HNO₃ and has a long
life while not hindering the ozone-removing action of the ozone remover disposed thereon,
whereby the apparatus can show excellent electrophotographic performances even after
successive use while preventing deterioration due to ozone, NOx and HNO₃ produced
by the atmospheric discharge.