Inventor
YAMAGUCHI TOSHITAKA
JP22 patents
⚠️ This page may combine multiple inventors who share the name “YAMAGUCHI TOSHITAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
15 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
US5887224AMar 23, 1999
Image forming device with improved mixing of circulated developer with replensihed toner
RICOH KK97 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
US5815767ASep 29, 1998
Image forming apparatus
RICOH KK44 citations96
US5678125AOct 14, 1997
Image forming apparatus
RICOH KK43 citations96
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
US5923935AJul 13, 1999
Image forming apparatus with a folding transfer device support member
RICOH KK36 citations92
US5915143AJun 22, 1999
Image forming apparatus and method for automatically adjusting toner density in response to humidity variations
RICOH KK55 citations92
US5697020ADec 9, 1997
Image forming apparatus for moving a charging roller towards and away from a photoreceptor and a cleaning member for the charging roller
RICOH KK48 citations92
US5400127AMar 21, 1995
Toner recovery system which detects linear movement of a recovered toner transporter
RICOH KK30 citations92
US5396319AMar 7, 1995
Cleaning device for an image forming apparatus
RICOH KK32 citations92
US7657196B2Feb 2, 2010
Compact image forming apparatus with a moveable optical sensor
RICOH KK6 citations63
US7813683B2Oct 12, 2010
Belt detaching device and image forming apparatus including belt detaching device
RICOH KK4 citations62