(19)
(11) EP 0 762 224 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.09.1997 Bulletin 1997/39

(43) Date of publication A2:
12.03.1997 Bulletin 1997/11

(21) Application number: 96305857.3

(22) Date of filing: 09.08.1996
(51) International Patent Classification (IPC)6: G03G 9/107, G03G 9/113
(84) Designated Contracting States:
CH DE FR GB IT LI

(30) Priority: 11.08.1995 JP 252077/95

(71) Applicant: MITA INDUSTRIAL CO. LTD.
Osaka 540 (JP)

(72) Inventors:
  • Iida, Tomohide, Mita Ind. Co., Ltd.
    Osaka-shi, Osaka 540 (JP)
  • Kawata, Hideaki, Mita Ind. Co., Ltd.
    Osaka-shi, Osaka 540 (JP)
  • Hatase, Yoshiteru, Mita Ind. Co., Ltd.
    Osaka-shi, Osaka 540 (JP)
  • Tamura, Hidekazu, Mita Ind. Co., Ltd.
    Osaka-shi, Osaka 540 (JP)
  • Sumiyoshi, Tadao, Mita Ind. Co., Ltd.
    Osaka-shi, Osaka 540 (JP)

(74) Representative: W.P. THOMPSON & CO. 
Eastcheap House Central Approach
Letchworth, Hertfordshire SG6 3DS
Letchworth, Hertfordshire SG6 3DS (GB)

   


(54) Electrophotographic carrier


(57) The electrophotographic carrier of the present invention comprises magnetic particles having such a specific surface state that the adhesion rate of a resin due to a method for forcibly adhering resin is within the range from 0.01 to 0.50%, or magnetic particles wherein at least concave parts and projection peripheral parts of the surface are coated with a resin, thereby certainly preventing the occurrence of spent toner.






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