Inventor
SHIMOJO EIJI
JP7 patents
Patents
7 patentsUS7672605B2Mar 2, 2010
Transfer device and image forming apparatus
RICOH KK22 citations92
US7630659B2Dec 8, 2009
Method and apparatus for image forming capable of effectively performing a charging process
RICOH KK23 citations92
US7333744B2Feb 19, 2008
Image forming apparatus that charges a photosensitive member by superimposing an alternate current bias voltage on a direct current bias voltage as the charge bias voltage
RICOH KK11 citations84
US7184678B2Feb 27, 2007
Image forming apparatus with improved separatability of transfer material
RICOH KK9 citations71
US7555243B2Jun 30, 2009
Charging member, process cartridge including the same, and image forming apparatus including the same
RICOH KK0 citations52
US7769310B2Aug 3, 2010
Image forming apparatus with improved separability of transfer material
RICOH KK1 citations50
US7603062B2Oct 13, 2009
Conductive member, and charging roller, process cartridge and image forming apparatus using same
RICOH KK0 citations41