(19)
(11) EP 0 810 486 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.04.1998 Bulletin 1998/16

(43) Date of publication A2:
03.12.1997 Bulletin 1997/49

(21) Application number: 97107365.5

(22) Date of filing: 13.01.1994
(51) International Patent Classification (IPC)6: G03G 15/02
(84) Designated Contracting States:
DE ES FR GB IT

(30) Priority: 13.01.1993 JP 3675/93
28.10.1993 JP 270590/93

(62) Application number of the earlier application in accordance with Art. 76 EPC:
94100436.8 / 0606907

(71) Applicant: Ricoh Company, Ltd.
Tokyo 143 (JP)

(72) Inventor:
  • Nojima,Kazuo
    Chiba-shi, Chiba-ken (JP)

(74) Representative: Schwabe - Sandmair - Marx 
Stuntzstrasse 16
81677 München
81677 München (DE)

 
Remarks:
This application was filed on 05 - 05 - 1997 as a divisional application to the application mentioned under INID code 62.
 


(54) Charging roller for an image forming apparatus


(57) In a charging device included in an image forming apparatus for charging an image carrier uniformly, a charge roller (2) has an elastic layer (5) and a surface layer (6). The elastic layer (5) is made of a substance having a medium electric resistance and having no conductive particles dispersed therein. The surface layer (6) is made of a mixture of epichlorohydrin rubber and a non-adhering fluorine-based resin.






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