Inventor
OHTA KATSUICHI
JP21 patents
⚠️ This page may combine multiple inventors who share the name “OHTA KATSUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
20 patentsUS6641964B2Nov 4, 2003
Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor
RICOH KK80 citations98
US6326112B1Dec 4, 2001
Electrophotographic photoreceptor, and process cartridge and image forming apparatus using the photoreceptor
RICOH KK117 citations98
US5578405ANov 26, 1996
Electrophotographic photoconductor containing disazo and trisazo pigments
RICOH KK125 citations97
US4775605AOct 4, 1988
Layered photosensitive material for electrophotography
RICOH KK75 citations94
US5370954ADec 6, 1994
Photoconductive composition containing trisazo and disazo compounds
RICOH KK25 citations93
US6844124B2Jan 18, 2005
Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor
RICOH KK31 citations92
US6707480B2Mar 16, 2004
Image formation unit including stored performance information
RICOH KK50 citations92
US5105222AApr 14, 1992
Electrophotographic copying apparatus having photoconductor with magnetic layer
RICOH KK42 citations91
US4863822ASep 5, 1989
Electrophotographic photoconductor comprising charge generating and transport layers containing adjuvants
RICOH KK24 citations91
US4822705AApr 18, 1989
Electrophotographic photoconductor with layer preventing charge injection
RICOH KK24 citations91
US7670743B2Mar 2, 2010
Image forming method
RICOH KK8 citations84
US7560203B2Jul 14, 2009
Electrophotographic photoreceptor, method of image formation, image formation apparatus and process cartridge for image formation apparatus
RICOH KK12 citations84
US7177570B2Feb 13, 2007
Measurement of frictional resistance of photoconductor against belt in image forming apparatus, process cartridge, and image forming method
RICOH KK20 citations84
US4906545AMar 6, 1990
Electrophotographic photoconductor with undercoat layer containing metal oxide on support
RICOH KK18 citations81
US7371490B2May 13, 2008
Photoconductor, image forming apparatus, image forming process, and process cartridge
RICOH KK7 citations74
US7371491B2May 13, 2008
Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor, and image forming apparatus and process cartridge using the electrophotographic photoreceptor
RICOH KK8 citations74
US5863683AJan 26, 1999
Electrophotographic photoconductor containing charge generating azo pigment subjected to a salt-milling process
RICOH KK7 citations74
US7824830B2Nov 2, 2010
Coating liquid and electrophotographic photoreceptor prepared using the coating liquid
RICOH KK5 citations63
US7534538B2May 19, 2009
Coating liquid for intermediate layer in electrophotographic photoconductor, electrophotographic photoconductor utilizing the same, image forming apparatus and process cartridge for image forming apparatus
RICOH KK3 citations63
US7507511B2Mar 24, 2009
Electrophotographic photoreceptor, and image forming apparatus and process cartridge therefor using the electrophotographic photoreceptor
RICOH KK5 citations61