Inventor

NUMAGAMI ATSUSHI

JP103 patents

Patents

50 patents

US7509071B2Mar 24, 2009

Image forming apparatus detachably mounting a process cartridge having developing roller movable to contact and be spaced from a photosensitive drum

CANON KK92 citations99

US7315710B2Jan 1, 2008

Electrophotographic photosensitive drum supporting apparatus, process cartridge and electrophotographic image forming apparatus

CANON KK140 citations99

US7209682B2Apr 24, 2007

Electrophotographic photosensitive drum, process cartridge, and electrophotographic image forming apparatus

CANON KK148 citations99

US7184690B2Feb 27, 2007

Electrophotographic photosensitive drum supporting apparatus, process cartridge and electrophotographic image forming apparatus

CANON KK182 citations99

US7158736B2Jan 2, 2007

Process cartridge having first and second rotatably coupled frames and electrophotographic image forming apparatus mounting such process cartridge

CANON KK209 citations99

US7092658B2Aug 15, 2006

Driving force transmission mechanism, image forming apparatus equipped with such a mechanism, and process unit of such an apparatus

CANON KK137 citations99

US7003247B2Feb 21, 2006

Electrophotographic photosensitive drum, process cartridge, and electrophotographic image forming apparatus

CANON KK154 citations99

US6954601B2Oct 11, 2005

Process cartridge and electrophotographic image forming apparatus

CANON KK156 citations99

US6898391B2May 24, 2005

Process cartridge, electric contact and electrophotographic image forming apparatus

CANON KK163 citations99

US6829455B2Dec 7, 2004

Driving force transmission mechanism, image forming apparatus equipped with such a mechanism, and process unit of such an apparatus

CANON KK160 citations99

US6714752B2Mar 30, 2004

Process cartridge, load producing member and electrophotographic image forming apparatus

CANON KK175 citations99

US6608980B2Aug 19, 2003

Electrophotographic image forming apparatus to which a process cartridge is detachably mountable and process cartridge comprising cartridge drum positioning portion or recess

CANON KK249 citations99

US6577831B1Jun 10, 2003

Electrophotographic image forming apparatus to which a process cartridge is detachably mountable and process cartridge having a supporting member for rotatably supporting a developing roller at a position away from the center of rotation thereof

CANON KK178 citations99

US6385416B1May 7, 2002

Space securing member, developing device, charging device and process cartridge

CANON KK216 citations99

US6272299B1Aug 7, 2001

Process cartridge and electrophotographic image forming apparatus

CANON KK190 citations99

US6131007AOct 10, 2000

Developing device, process cartridge and electrophotographic image forming apparatus

CANON KK183 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

US5966566AOct 12, 1999

Recycle method for process cartridge and image forming apparatus

CANON KK235 citations99

US5920753AJul 6, 1999

Process cartridge and electrophotographic image forming apparatus

CANON KK277 citations99

US5768658AJun 16, 1998

Electrode member, developing apparatus, process cartridge and image forming apparatus

CANON KK195 citations99

US5689774ANov 18, 1997

Process cartridge and image forming apparatus using such a process cartridge

CANON KK122 citations99

US5543898AAug 6, 1996

Process cartridge, method for assembling process cartridge and image forming apparatus

CANON KK182 citations99

US5500714AMar 19, 1996

Process cartridge, method for assembling process cartridge and image forming appararatus

CANON KK200 citations99

US7457566B2Nov 25, 2008

Electrophotosensitive drum having non-circular twisted projection with electroconductive member thereon, process cartridge having such drum, and electrophotographic image forming apparatus to which the cartridge is detachably mountable

CANON KK68 citations98

US7366452B2Apr 29, 2008

Cleaning device, process cartridge, cleaning member and electrophotographic image forming apparatus

CANON KK72 citations98

US7062200B2Jun 13, 2006

Process cartridge and electrophotographic image forming apparatus

CANON KK115 citations98

US6978099B2Dec 20, 2005

Developing apparatus, process cartridge, and electrophotographic image forming apparatus including an elastic member preventing a gap between a developing agent carrier and a layer thickness limiter from changing, and an electrophotographic image forming apparatus detachably mounting such process cartridge

CANON KK122 citations98

US6970668B2Nov 29, 2005

Method of reproducing process cartridge

CANON KK107 citations98

US6968146B1Nov 22, 2005

Developer supply container and electrophotographic image forming apparatus

CANON KK109 citations98

US6954600B2Oct 11, 2005

Electric contact member applying voltage to charger, process cartridge, and image forming apparatus

CANON KK120 citations98

US6834175B2Dec 21, 2004

Developer agitating member

CANON KK119 citations98

US6463233B2Oct 8, 2002

Process cartridge having first and second cartridge guiding portions and an electrophotographic image forming apparatus to which the process cartridge is attached

CANON KK133 citations98

US6442359B1Aug 27, 2002

Process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus comprising means for rotating a charging unit if first and second rotational directions and the apparatus mounting such a process cartridge

CANON KK126 citations98

US6330409B1Dec 11, 2001

Process cartridge and electrophotographic image forming apparatus

CANON KK107 citations98

US6289189B1Sep 11, 2001

Process cartridge and electrophotographic image forming apparatus having a main assembly in which a cartridge coupling member is engageable with a main assembly coupling member to receive a driving force

CANON KK143 citations98

US6266500B1Jul 24, 2001

Developing apparatus and process cartridge

CANON KK98 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

US6097909AAug 1, 2000

Photosensitive drum mounting method, process cartridge and electrophotographic image forming apparatus

CANON KK150 citations98

US6097908AAug 1, 2000

Electrical connector, process cartridge and electrophotographic image forming apparatus

CANON KK120 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

US5937242AAug 10, 1999

Process cartridge and electrophotographic image forming apparatus

CANON KK90 citations98

US5937239AAug 10, 1999

Process cartridge and electrophotographic image forming apparatus

CANON KK137 citations98

US5790923AAug 4, 1998

Developing apparatus

CANON KK120 citations98

US5617579AApr 1, 1997

Process cartridge, method for assembling process cartridge and image forming apparatus

CANON KK117 citations98

Showing the top 50 of 103 patents by PatentIndex Score.