Inventor
NAKAHARA TOSHIO
JP7 patents
Patents
7 patentsUS5786091AJul 28, 1998
Charge roller for an image forming apparatus
RICOH KK32 citations91
US5479243ADec 26, 1995
Image forming apparatus and charging device thereof
RICOH KK24 citations91
US5619311AApr 8, 1997
Roller charging apparatus and image forming apparatus using the same
RICOH KK35 citations89
US4835582AMay 30, 1989
Device for driving a photoconductive element of an electrophotographic copier etc.
RICOH KK10 citations73
US5689770ANov 18, 1997
Image forming apparatus which maintains a temperature of a charge roller
RICOH KK7 citations72
US5057873AOct 15, 1991
Method of cleaning a transfer drum of an electrophotographic apparatus
RICOH KK11 citations72
US5881344AMar 9, 1999
Image forming apparatus and charging device thereof
RICOH KK3 citations61