Inventor
TSUDA TADAYUKI
JP87 patents
Patents
50 patentsUS6603939B1Aug 5, 2003
Developing apparatus, process cartridge, connecting method between developing frame and developer frame, and flexible seal
CANON KK175 citations99
US6542706B2Apr 1, 2003
Process cartridge and electrophotographic image forming apparatus
CANON KK154 citations99
US6519431B1Feb 11, 2003
Process cartridge, assembling method therefor and electrophotographic image forming apparatus
CANON KK173 citations99
US6173145B1Jan 9, 2001
Developing apparatus with drive mechanism for developer bearing body
CANON KK208 citations99
US6154623ANov 28, 2000
Process cartridge and image forming apparatus
CANON KK164 citations99
US6006058ADec 21, 1999
Process cartridge and electrophotographic image forming apparatus having an improved driving system
CANON KK154 citations99
US5470635ANov 28, 1995
Blade member having a flat-surface side and an angled-surface side
CANON KK126 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
US6823155B2Nov 23, 2004
Process cartridge and 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
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
US6415121B1Jul 2, 2002
Connecting method of resin material molded product, process cartridge and assembling method of process cartridge
CANON KK156 citations97
US6097906AAug 1, 2000
Electrophotographic image forming apparatus having a main assembly connector and a process cartridge having a cartridge connector electrically connectable with the main assembly connector
CANON KK97 citations97
US6011941AJan 4, 2000
Process cartridge and electrophotographic image forming apparatus
CANON KK91 citations97
US6535699B1Mar 18, 2003
Developer container, developer amount detecting system, process cartridge, developing device, and image forming apparatus
CANON KK63 citations96
US6334035B1Dec 25, 2001
Developer container and cartridge
CANON KK80 citations96
US6324363B1Nov 27, 2001
Process cartridge and electrophotographic image forming apparatus
CANON KK66 citations96
US6118961ASep 12, 2000
Detachable two-frame process cartridge for an image forming apparatus
CANON KK46 citations96
US5987278ANov 16, 1999
Process cartridge and image forming apparatus usable therewith
CANON KK46 citations96
US5907749AMay 25, 1999
Process cartridge and image forming apparatus usable therewith
CANON KK65 citations96
US5812909ASep 22, 1998
Developing device
CANON KK71 citations96
US5682579AOct 28, 1997
Detachable two-frame process cartridge for an image forming apparatus
CANON KK42 citations96
US5583613ADec 10, 1996
Image forming system
CANON KK97 citations96
US5581325ADec 3, 1996
Process cartridge having an electroconductive grounding member and an image forming apparatus using such a process cartridge
CANON KK70 citations96
US5223893AJun 29, 1993
Process cartridge detachably mountable to image forming apparatus
CANON KK105 citations96
US5208634AMay 4, 1993
Process cartridge detachably mountable to image forming apparatus featuring an injectable sealing member
CANON KK93 citations96
US5151734ASep 29, 1992
Process cartridge detachably mountable to image forming apparatus featuring a peripherally supported image bearing drum
CANON KK114 citations96
US5126800AJun 30, 1992
Process cartridge and image forming apparatus usable with same featuring selectively engageable drive mechanism
CANON KK103 citations96
US6075956AJun 13, 2000
Process cartridge having shiftable cover and guide member for directing airflow
CANON KK41 citations95
US5878304AMar 2, 1999
Process cartridge having shiftable cover with inner protrusion
CANON KK63 citations95
US10671013B2Jun 2, 2020
Drum unit, cartridge, electrophotographic image forming apparatus and coupling member
CANON KK16 citations94
US6473578B2Oct 29, 2002
Developing apparatus
CANON KK39 citations93
US6424811B1Jul 23, 2002
Electrophotographic image forming apparatus and process cartridge detachably mounted thereto having first and second drive force transmitting means
CANON KK56 citations93
US6266502B1Jul 24, 2001
Process cartridge with cleaning frame having reinforcing member
CANON KK26 citations93
US6229979B1May 8, 2001
Developing charging member supplied with a voltage of a same polarity as that of a developer and not less than a charge starting voltage and a developing charging roller with internal bearing
CANON KK31 citations93
US6151465ANov 21, 2000
Electrical contact device for developing roller
CANON KK19 citations93
US6064841AMay 16, 2000
Power supply for a charging apparatus having a contact charger for charging an object to be charged
CANON KK26 citations93
US6041196AMar 21, 2000
Developer detecting apparatus for detecting the position of an upper surface of developer contained in a container and process cartridge comprising such apparatus
CANON KK31 citations93
Showing the top 50 of 87 patents by PatentIndex Score.