Inventor
NAGAME HIROSHI
JP33 patents
Patents
33 patentsUS6030733AFeb 29, 2000
Electrophotographic photoconductor with water vapor permeability
RICOH KK133 citations99
US5871876AFeb 16, 1999
Electrophotographic photoconductor
RICOH KK157 citations99
US6641964B2Nov 4, 2003
Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor
RICOH KK80 citations98
US6562529B1May 13, 2003
Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same
RICOH KK85 citations98
US6363237B1Mar 26, 2002
Unit for imparting lubricity to electrophotographic photoconductor, electrophotographic image formation apparatus including the unit, and image formation method using the apparatus
RICOH KK81 citations98
US6151468ANov 21, 2000
Electrophotographic photoconductor
RICOH KK105 citations98
US6060205AMay 9, 2000
Image forming apparatus
RICOH KK120 citations98
US6521386B1Feb 18, 2003
Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor
RICOH KK60 citations96
US6160977ADec 12, 2000
Image forming apparatus and device for applying a lubricant to an image
RICOH KK72 citations96
US6118964ASep 12, 2000
Multi-functional contact-type charging unit and image transfer unit
RICOH KK56 citations96
US6014532AJan 11, 2000
Image forming apparatus
RICOH KK59 citations96
US6558862B2May 6, 2003
Electrophotographic photoreceptor and image forming apparatus using the photoreceptor
RICOH KK70 citations95
US5008172AApr 16, 1991
Electrophotographic photoconductor
RICOH KK52 citations95
US6686114B2Feb 3, 2004
Electrophotographic image forming method and apparatus
RICOH KK47 citations93
US5870657AFeb 9, 1999
Charging apparatus for photoconductor with ozone adsorption features
RICOH KK30 citations93
US5840455ANov 24, 1998
Electrophotographic photoconductor
RICOH KK30 citations93
US5656406AAug 12, 1997
Electrophotographic photoconductor with amorphous carbon overlayer
RICOH KK33 citations93
US5525447AJun 11, 1996
Electrophotographic photoconductor
RICOH KK31 citations93
US5452061ASep 19, 1995
Image formation apparatus
RICOH KK25 citations93
US5390015AFeb 14, 1995
Carrier removal in an electrophotographic image formation method
RICOH KK24 citations93
US5264903ANov 23, 1993
Cleaning unit with a cleaning member made of activated carbon fibers
RICOH KK21 citations93
US7341814B2Mar 11, 2008
Electrophotographic photoconductor, preparation method thereof, electrophotographic apparatus and process cartridge
RICOH KK19 citations92
US6844124B2Jan 18, 2005
Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor
RICOH KK31 citations92
US6706459B2Mar 16, 2004
Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same
RICOH KK22 citations92
US5147751ASep 15, 1992
Electrophotographic photoconductor and electrophotographic copying process and apparatus using the photoconductor
RICOH KK47 citations92
US5059502AOct 22, 1991
Electrophotographic photoconductor
RICOH KK32 citations92
US4957839ASep 18, 1990
Electrophotographic photoconductor having a silicone resin charge retention layer
RICOH KK36 citations90
US7177570B2Feb 13, 2007
Measurement of frictional resistance of photoconductor against belt in image forming apparatus, process cartridge, and image forming method
RICOH KK20 citations84
US6879799B2Apr 12, 2005
Image-forming apparatus and image-forming process-cartridge
RICOH KK14 citations84
US7315722B2Jan 1, 2008
Image forming apparatus and image forming method
RICOH KK17 citations79
US7482104B2Jan 27, 2009
Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same
RICOH KK2 citations62
US7386256B2Jun 10, 2008
Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same
RICOH KK2 citations62
US7153621B2Dec 26, 2006
Electrophotographic photoreceptor and image forming apparatus using the photoreceptor
RICOH KK2 citations62