Inventor
YASUTOMI KEI
JP36 patents
⚠️ This page may combine multiple inventors who share the name “YASUTOMI KEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
24 patentsUS6366751B1Apr 2, 2002
Image forming apparatus including preselected range between charge injection layer and voltage potential
RICOH KK182 citations99
US5999773ADec 7, 1999
Image forming apparatus and cleaning method for contact-charging member
RICOH KK92 citations97
US6757509B2Jun 29, 2004
Image forming apparatus
RICOH KK56 citations96
US6654579B2Nov 25, 2003
Image forming apparatus including diamond-like or amorphous structure containing hydrogen surface protection layer
RICOH KK65 citations96
US6625409B2Sep 23, 2003
Image forming apparatus having a diamond-like structure surface protection layer on a photoconductive layer
RICOH KK70 citations96
US6597885B2Jul 22, 2003
Image forming apparatus having a developing device with a magnet brush
RICOH KK45 citations96
US5740494AApr 14, 1998
Configured to enhance toner collecting efficiency and toner redepositing efficiency
RICOH KK91 citations96
US6978109B2Dec 20, 2005
Image forming apparatus
RICOH KK20 citations93
US6819901B1Nov 16, 2004
Developing method and a developing device for image forming apparatus
RICOH KK27 citations93
US7620336B2Nov 17, 2009
Apparatus and method for fixing an image
RICOH KK21 citations92
US7212753B2May 1, 2007
Image forming apparatus and process cartridge
RICOH KK23 citations92
US6778805B2Aug 17, 2004
Image forming apparatus having a developing device with a magnet brush
RICOH KK34 citations92
US7787815B2Aug 31, 2010
Image forming device
RICOH KK8 citations84
US7751746B2Jul 6, 2010
Device for driving rotary body with mechanism for dampening fluctuation in rotation velocity
RICOH KK11 citations84
US7746502B2Jun 29, 2010
Dither matrix producing method and apparatus, image processing method and apparatus, image forming method and apparatus, program and recording medium
RICOH KK8 citations84
US7738813B2Jun 15, 2010
Corona charger having two charging regions
RICOH KK9 citations84
US7551868B2Jun 23, 2009
Image forming apparatus and image forming method
RICOH KK9 citations84
US7463837B2Dec 9, 2008
Image forming apparatus with superimposed dark and light toner images
RICOH KK10 citations84
US6800410B2Oct 5, 2004
Image forming apparatus
RICOH KK13 citations84
US7657218B2Feb 2, 2010
Gloss providing sheet and image formation apparatus
RICOH KK7 citations73
US7822351B2Oct 26, 2010
Filling-rate lowering and rolling rate adjusting image forming apparatus
RICOH KK5 citations63
US7643179B2Jan 5, 2010
Image forming apparatus and image forming method
RICOH KK6 citations63
US7403735B2Jul 22, 2008
Image formation apparatus using an electrophotographic process
RICOH KK4 citations63
US7724394B2May 25, 2010
Image forming apparatus and image forming method using pseudo half tone processing with different resolutions
RICOH KK5 citations62
YASUTOMI KEI
7 patentsUS8553287B2Oct 8, 2013
Pseudo-halftoning device, image forming apparatus, and image forming system
YASUTOMI KEI12 citations81
US9323490B2Apr 26, 2016
Image processing apparatus and image processing method
YASUTOMI KEI2 citations62
US8773721B2Jul 8, 2014
Image processing apparatus and image forming apparatus for performing halftone processing on point-of-purchase image
YASUTOMI KEI2 citations62
US8180270B2May 15, 2012
Image forming apparatus for controlling glossiness of an image
YASUTOMI KEI4 citations62
US9245319B2Jan 26, 2016
Image processing device, image processing method, and image forming apparatus that perform an enhancement process to input image data
YASUTOMI KEI0 citations51
US8908234B2Dec 9, 2014
Image capture apparatus, image capture system, and image capture method
YASUTOMI KEI0 citations51
US8331812B2Dec 11, 2012
Image forming apparatus
YASUTOMI KEI1 citations51