Inventor
TATSUMI KENZOU
JP7 patents
Patents
7 patentsUS6085062AJul 4, 2000
Electrophotographic image forming apparatus
RICOH KK100 citations97
US5557382ASep 17, 1996
Toner replenishing device for a developing device
RICOH KK120 citations97
US5815767ASep 29, 1998
Image forming apparatus
RICOH KK44 citations96
US5678125AOct 14, 1997
Image forming apparatus
RICOH KK43 citations96
US6160969ADec 12, 2000
Image forming apparatus with a voltage applying unit for image transfer
RICOH KK57 citations95
US6055388AApr 25, 2000
Image forming apparatus and method for obtaining appropriate toner density
RICOH KK83 citations95
US6006050ADec 21, 1999
Image forming method and apparatus for controlling amount of supplied toner or agitating time
RICOH KK75 citations95