Inventor
SEKINE TAKEYOSHI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “SEKINE TAKEYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
16 patentsUS6597885B2Jul 22, 2003
Image forming apparatus having a developing device with a magnet brush
RICOH KK45 citations96
US6442364B2Aug 27, 2002
Image forming apparatus having a developer carrier capable of preventing toner adhesion
RICOH KK72 citations96
US5270783ADec 14, 1993
Image forming equipment having improved toner sensing
RICOH KK66 citations95
US5227842AJul 13, 1993
Electrophotographic image forming apparatus which controls developer bias based on image irregularity
RICOH KK62 citations94
US6873814B2Mar 29, 2005
Developing device using a two-ingredient type developer and image forming apparatus including the same
RICOH KK36 citations92
US6856774B2Feb 15, 2005
Developing device including magnetic member provided on toner-scattering restraining device and image forming apparatus including the developing device
RICOH KK26 citations92
US6792234B2Sep 14, 2004
Developing device having a developer carrier including main and auxiliary magnetic poles and image forming apparatus using the same
RICOH KK35 citations92
US6778805B2Aug 17, 2004
Image forming apparatus having a developing device with a magnet brush
RICOH KK34 citations92
US6701114B2Mar 2, 2004
Image forming apparatus and image forming process unit with developer carried on a developer carrier
RICOH KK43 citations92
US5913092AJun 15, 1999
Picture design forming system and method toner for forming an image, transferring substance for forming a picture design
RICOH KK48 citations92
US6125257ASep 26, 2000
Methods and systems for cleaning residual toner from image developing device
RICOH KK35 citations90
US5648842AJul 15, 1997
Methods and systems for cleaning residual toner from image-developing device
RICOH KK20 citations90
US7003250B2Feb 21, 2006
Two component development apparatus and process cartridge
RICOH KK12 citations84
US5131079AJul 14, 1992
Method of controlling a display and a display control device for a copying machine
RICOH KK21 citations81
US6728504B2Apr 27, 2004
Developing device using a magnet brush and image forming apparatus including the same
RICOH KK11 citations74
US5327199AJul 5, 1994
Developing device for a color image forming apparatus
RICOH KK11 citations73