Inventor
USUI NORIYUKI
JP9 patents
Patents
9 patentsUS6266501B1Jul 24, 2001
Image-forming apparatus having a seal for a developer and a method for detecting a removal of the seal
RICOH KK90 citations98
US6148161ANov 14, 2000
Image forming apparatus with improved toner density control
RICOH KK64 citations96
US6144822ANov 7, 2000
Image forming apparatus having detachable transfer roller and discharge device
RICOH KK63 citations96
US5864733AJan 26, 1999
Developing device for image forming apparatus
RICOH KK44 citations91
US5175584ADec 29, 1992
Cleaning control device for image forming equipment
RICOH KK23 citations91
US5083169AJan 21, 1992
Device for removing deposits from a photoconductive element of an image recorder which is movable between a cleaning and non-cleaning position
RICOH KK26 citations91
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
US4945389AJul 31, 1990
Method of cleaning a photoconductive element of an image recorder
RICOH KK13 citations71
US5884134AMar 16, 1999
Image forming apparatus with a device to increase contact area between a transfer sheet and an image carrier
RICOH KK5 citations61