Inventor
WATANABE KAZUSHI
JP141 patents
Patents
50 patentsUS7403733B2Jul 22, 2008
Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus
CANON KK68 citations99
US6501926B1Dec 31, 2002
Process cartridge and electrophotographic image forming apparatus
CANON KK186 citations99
US6400914B1Jun 4, 2002
Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus
CANON KK196 citations99
US6349188B1Feb 19, 2002
Process cartridge, electrophotographic image forming apparatus, driving force transmission part and electrophotographic photosensitive drum
CANON KK126 citations99
US6336018B1Jan 1, 2002
Electrophotographic image forming apparatus, process cartridge, and drive mount for photosensitive drum
CANON KK189 citations99
US6272299B1Aug 7, 2001
Process cartridge and electrophotographic image forming apparatus
CANON KK190 citations99
US6240266B1May 29, 2001
Process cartridge and drum mount for photosensitive drum
CANON KK245 citations99
US6226478B1May 1, 2001
Process cartridge having drive mount for photosensitive drum
CANON KK175 citations99
US6175706B1Jan 16, 2001
Process cartridge, electrophotographic image forming apparatus driving force transmission part and electrophotographic photosensitive drum
CANON KK181 citations99
US6128454AOct 3, 2000
Process cartridge, electrophotographic image forming apparatus, driving force transmission part, and electrophotographic photosensitive drum
CANON KK185 citations99
US6029032AFeb 22, 2000
Process cartridge and electrophotographic image forming apparatus
CANON KK169 citations99
US6006058ADec 21, 1999
Process cartridge and electrophotographic image forming apparatus having an improved driving system
CANON KK154 citations99
US5903803AMay 11, 1999
Process cartridge, electrophotographic image forming apparatus, driving force transmission part, and electrophotographic photosensitive drum
CANON KK356 citations99
US5768658AJun 16, 1998
Electrode member, developing apparatus, process cartridge and image forming apparatus
CANON KK195 citations99
US5640650AJun 17, 1997
Process cartridge including a spaced rolling members support feature and image forming apparatus using the same
CANON KK152 citations99
US5470635ANov 28, 1995
Blade member having a flat-surface side and an angled-surface side
CANON KK126 citations99
US5463446AOct 31, 1995
Rotary member a process cartridge and an assembling method for rolling members
CANON KK190 citations99
US5404198AApr 4, 1995
Process cartridge and image forming apparatus
CANON KK124 citations99
US5294960AMar 15, 1994
Detachable two-frame process cartridge for an image forming apparatus
CANON KK144 citations99
US6501927B1Dec 31, 2002
Process cartridge and photosensitive drum driving mount
CANON KK124 citations98
US6330409B1Dec 11, 2001
Process cartridge and electrophotographic image forming apparatus
CANON KK107 citations98
US6246849B1Jun 12, 2001
Bearing, process cartridge and electrophotographic image forming apparatus
CANON KK119 citations98
US6169866B1Jan 2, 2001
Process cartridge and electrophotographic image forming apparatus
CANON KK120 citations98
US6163665ADec 19, 2000
Process cartridge electrophotographic image forming apparatus and positioning there between
CANON KK138 citations98
US6097908AAug 1, 2000
Electrical connector, process cartridge and electrophotographic image forming apparatus
CANON KK120 citations98
US6097909AAug 1, 2000
Photosensitive drum mounting method, process cartridge and electrophotographic image forming apparatus
CANON KK150 citations98
US6070028AMay 30, 2000
Process cartridge, electrophotographic image forming apparatus and coupling therebetween
CANON KK114 citations98
US6016413AJan 18, 2000
Assembling method of process cartridge, assembling method and process cartridge
CANON KK114 citations98
US5966568AOct 12, 1999
Process cartridge, assembling method of process cartridge, assembling method of toner container and electrophotographic image forming apparatus
CANON KK115 citations98
US5937239AAug 10, 1999
Process cartridge and electrophotographic image forming apparatus
CANON KK137 citations98
US5937242AAug 10, 1999
Process cartridge and electrophotographic image forming apparatus
CANON KK90 citations98
US5926672AJul 20, 1999
Photosensitive drum provided in an image forming apparatus including helical gears disposed at an end of the drum
CANON KK101 citations98
US5828928AOct 27, 1998
Process cartridge mountable in an image forming system and a method for assembling a cleaning device
CANON KK114 citations98
US5809374ASep 15, 1998
Process cartridge including a seal member formed from a liquid-foam material
CANON KK127 citations98
US5790923AAug 4, 1998
Developing apparatus
CANON KK120 citations98
US5669042ASep 16, 1997
Image forming system having means to support at least one component of a process cartridge
CANON KK128 citations98
US5659847AAug 19, 1997
Process cartridge having positioning member for positioning optical device
CANON KK110 citations98
US5623328AApr 22, 1997
Process cartridge and image forming system on which process cartridge is mountable
CANON KK146 citations98
US5608509AMar 4, 1997
Process cartridge with blade member having a flat-surface side and an angled-surface side
CANON KK109 citations98
US5602623AFeb 11, 1997
Photosensitive drum provided in an image forming apparatus including gears disposed at an end of drum
CANON KK108 citations98
US5510878AApr 23, 1996
Process cartridge and image forming system
CANON KK112 citations98
US5488459AJan 30, 1996
Image bearing member having an asymmetrically weighted base, process cartridge and image forming apparatus
CANON KK113 citations98
US5475470ADec 12, 1995
Process cartridge and image forming system on which the process cartridge is mountable using a handgrip
CANON KK109 citations98
US5345294ASep 6, 1994
Process cartridge and image forming apparatus using same
CANON KK127 citations98
US5331372AJul 19, 1994
Process cartridge and image forming apparatus on which process cartridge is mountable
CANON KK135 citations98
US5095335AMar 10, 1992
Copier with retractable charging unit to prevent damage to drum when removing process cartridge
CANON KK131 citations98
US6885838B2Apr 26, 2005
Electrophotographic photosensitive drum having twisted projection coupling member engageable with twisted hole driving coupling of motor, and process cartridge and electrophotographic image forming apparatus using same
CANON KK62 citations97
US7274896B2Sep 25, 2007
Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus
CANON KK34 citations96
US7248814B2Jul 24, 2007
Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus
CANON KK19 citations96
US7092655B2Aug 15, 2006
Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus
CANON KK51 citations96
Showing the top 50 of 141 patents by PatentIndex Score.