Inventor
KARASAWA KAZUNORI
JP13 patents
Patents
13 patentsUS5594539AJan 14, 1997
Paper guide device for image forming apparatus
RICOH KK54 citations93
US7272354B2Sep 18, 2007
Cleaning unit and image forming apparatus having multiple cleaning blades
RICOH KK27 citations92
US7110696B2Sep 19, 2006
Cleaning unit, process cartridge, and image forming apparatus
RICOH KK27 citations92
US6501917B1Dec 31, 2002
Method and apparatus for image forming capable of effectively performing image density adjustment
RICOH KK21 citations92
US5038175AAug 6, 1991
Image density control method
RICOH KK33 citations92
US5006896AApr 9, 1991
Image density control method for an image forming apparatus
RICOH KK37 citations92
US4962394AOct 9, 1990
Toner density control device for an image recorder
RICOH KK22 citations82
US7072609B2Jul 4, 2006
Apparatus and method for image forming capable of performing an improved image fixing using a cooler
RICOH KK7 citations73
US6339690B1Jan 15, 2002
Electrophotographic apparatus having screening member for recycling toner
RICOH KK7 citations73
US5500720AMar 19, 1996
Bias application control device for image forming apparatus using reverse development
RICOH KK12 citations73
US4772918ASep 20, 1988
Current-controlled image transfer
RICOH KK18 citations73
US6456814B2Sep 24, 2002
Image developing device and image forming apparatus preventing toner from adhering to developing sleeve
RICOH KK6 citations62
US6141509AOct 31, 2000
Toner content control device for an electrophotographic apparatus
RICOH KK6 citations62