Inventor
FUJIMORI KOUTA
JP23 patents
Patents
23 patentsUS6628908B2Sep 30, 2003
Toner supply unit and image forming apparatus
RICOH KK175 citations99
US6591077B2Jul 8, 2003
Image forming apparatus and toner container therefor
RICOH KK143 citations99
US6507720B2Jan 14, 2003
Color image forming apparatus and toner replenishing apparatus each including plural toner containers received in receiving member of setting part and toner containers therefor
RICOH KK209 citations99
US6393241B1May 21, 2002
Nozzle having an end portion capable of penetrating into a toner discharging portion included in a toner container that stores powdery toner
RICOH KK181 citations99
US6567637B2May 20, 2003
Apparatus and method for replenishing a developing device with toner while suppressing toner remaining
RICOH KK105 citations98
US6501913B2Dec 31, 2002
Container, its support structure, and image formation apparatus
RICOH KK100 citations98
US5860038AJan 12, 1999
Apparatus and method for detecting developing ability of an image forming apparatus
RICOH KK91 citations98
US7130558B2Oct 31, 2006
Toner supply unit and image forming apparatus
RICOH KK32 citations96
US6748190B2Jun 8, 2004
Apparatus and method for replenishing a developing device with toner while suppressing toner remaining
RICOH KK42 citations96
US6055386AApr 25, 2000
Apparatus and method for detecting developing ability of an image forming apparatus with varied LED continuous lighting time for image forming and process control modes
RICOH KK60 citations96
US5761570AJun 2, 1998
Color toner density sensor and image forming apparatus using the same
RICOH KK52 citations96
US5630195AMay 13, 1997
Color toner density sensor and image forming apparatus using the same
RICOH KK51 citations96
US7209689B2Apr 24, 2007
Toner supply unit and image forming apparatus
RICOH KK20 citations93
US7088945B2Aug 8, 2006
Toner supply unit and image forming apparatus
RICOH KK13 citations93
US6829465B2Dec 7, 2004
Method and apparatus for image forming capable of effectively performing color displacement detection
RICOH KK38 citations92
US6496677B2Dec 17, 2002
Image forming apparatus and image forming method
RICOH KK39 citations92
US6181892B1Jan 30, 2001
Image forming apparatus and method for developing toner patches
RICOH KK30 citations92
US6690896B2Feb 10, 2004
Image forming apparatus, replacement assembly for image forming apparatus and integrated circuit chip therefor
RICOH KK22 citations91
US7356290B2Apr 8, 2008
Toner supply unit and image forming apparatus
RICOH KK9 citations84
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
US7542697B2Jun 2, 2009
Toner supply unit and image forming apparatus
RICOH KK7 citations74
US7809291B2Oct 5, 2010
Image forming apparatus with a two component developer, toner density detection and toner density correction
RICOH KK5 citations61