(19)
(11) EP 0 398 262 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.03.1991 Bulletin 1991/11

(43) Date of publication A2:
22.11.1990 Bulletin 1990/47

(21) Application number: 90109155.3

(22) Date of filing: 15.05.1990
(51) International Patent Classification (IPC)5G03G 21/00
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 16.05.1989 JP 123869/89

(71) Applicant: CANON KABUSHIKI KAISHA
Tokyo (JP)

(72) Inventors:
  • 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)

(74) Representative: Bühling, Gerhard, Dipl.-Chem. et al
Patentanwaltsbüro Tiedtke-Bühling-Kinne & Partner Bavariaring 4
80336 München
80336 München (DE)


(56) References cited: : 
   
       


    (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.





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