Inventor
YUUKI KAZUHIKO
JP11 patents
Patents
11 patentsUS6567637B2May 20, 2003
Apparatus and method for replenishing a developing device with toner while suppressing toner remaining
RICOH KK105 citations98
US6748190B2Jun 8, 2004
Apparatus and method for replenishing a developing device with toner while suppressing toner remaining
RICOH KK42 citations96
US6366754B1Apr 2, 2002
Color image forming apparatus with toner recycling
RICOH KK44 citations92
US6334039B1Dec 25, 2001
Method and apparatus for image forming apparatus capable of accurately detecting toner image patterns
RICOH KK51 citations92
US6141521AOct 31, 2000
Image forming device and method therefor
RICOH KK20 citations92
US6690896B2Feb 10, 2004
Image forming apparatus, replacement assembly for image forming apparatus and integrated circuit chip therefor
RICOH KK22 citations91
US7289748B2Oct 30, 2007
Apparatus and method for replenishing a developing device with toner while suppressing toner remaining
RICOH KK10 citations84
US7218880B2May 15, 2007
Apparatus and method for replenishing a developing device with toner while suppressing toner remaining
RICOH KK10 citations84
US6603943B2Aug 5, 2003
Developing apparatus including first and second agitating members in which the first agitating member includes non-screw portion
RICOH KK15 citations83
US6101361AAug 8, 2000
Image forming apparatus with a device and a method to increase contact area between a transfer sheet and an image carrier
RICOH KK9 citations72
US5884134AMar 16, 1999
Image forming apparatus with a device to increase contact area between a transfer sheet and an image carrier
RICOH KK5 citations61