Inventor
KAKEGAWA MIEKO
JP7 patents
Patents
7 patentsUS7027761B2Apr 11, 2006
Developing device and an image forming apparatus including the same
RICOH KK17 citations83
US6697593B2Feb 24, 2004
Developing device using a developing roller and image forming apparatus including the same
RICOH KK17 citations80
US7366454B2Apr 29, 2008
Long magnet, production method thereof, magnet roller and image forming device
RICOH KK8 citations73
US7352983B2Apr 1, 2008
Development magnet roller, development device, process cartridge and image forming apparatus
RICOH KK8 citations72
US7127199B2Oct 24, 2006
Developing device and process cartridge with predetermined magnetic force for an image forming apparatus
RICOH KK8 citations70
US7203450B2Apr 10, 2007
Developing roller, developing apparatus, process cartridge, and image formation apparatus
RICOH KK6 citations62
US7189338B2Mar 13, 2007
Image forming apparatus and developing device therefor
RICOH KK5 citations59