Inventor
MATSUZAKI HIROOMI
JP67 patents
Patents
50 patentsUS7349657B2Mar 25, 2008
Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method
CANON KK161 citations99
US7224925B2May 29, 2007
Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method
CANON KK185 citations99
US6934485B2Aug 23, 2005
Process cartridge, electrophotographic image forming apparatus and fixing method of electrical contact part
CANON KK256 citations99
US6795666B2Sep 21, 2004
Remanufacturing method for process cartridge
CANON KK169 citations99
US6549736B2Apr 15, 2003
Process cartridge, engaging member therefor and method for mounting developing roller and magnet
CANON KK210 citations99
US6173140B1Jan 9, 2001
Coupling member, process cartridge and assembling method of process cartridge
CANON KK232 citations99
US6173145B1Jan 9, 2001
Developing apparatus with drive mechanism for developer bearing body
CANON KK208 citations99
US5966567AOct 12, 1999
Process cartridge and electrophotographic image forming apparatus
CANON KK224 citations99
US5943529AAug 24, 1999
Process cartridge and electrophotographic image forming apparatus
CANON KK215 citations99
US9494890B2Nov 15, 2016
Developing cartridge, process cartridge and image forming apparatus
CANON KK56 citations98
US7412193B2Aug 12, 2008
Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method
CANON KK96 citations98
US6931226B2Aug 16, 2005
Process cartridge remanufacturing method
CANON KK159 citations98
US6282389B1Aug 28, 2001
Electrophotographic photosensitive drum, process cartridge and electrophotographic image forming apparatus
CANON KK107 citations98
US6219504B1Apr 17, 2001
Process cartridge and image forming apparatus
CANON KK110 citations98
US6205305B1Mar 20, 2001
Developing apparatus having welded-together accommodating and developing containers
CANON KK87 citations98
US6144815ANov 7, 2000
Developing device, process cartridge and electrophotographic image forming apparatus
CANON KK98 citations98
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
US9885978B2Feb 6, 2018
Developer accommodating unit, process cartridge and electrophotographic image forming apparatus
CANON KK30 citations94
US9665040B2May 30, 2017
Developer accommodating unit, process cartridge and electrophotographic image forming apparatus
CANON KK31 citations94
US9529304B2Dec 27, 2016
Developer accommodating unit, process cartridge, and electrophotographic image forming apparatus
CANON KK35 citations94
US9383678B2Jul 5, 2016
Developer accommodating container, process cartridge and image forming apparatus
CANON KK25 citations94
US9291942B2Mar 22, 2016
Developer accommodating unit, process cartridge and image forming apparatus
CANON KK26 citations94
US9207581B2Dec 8, 2015
Developer accommodating unit, developing device, process cartridge and image forming apparatus
CANON KK48 citations94
US9188906B2Nov 17, 2015
Cartridge, developing cartridge, process cartridge and image forming apparatus
CANON KK50 citations94
US9152081B2Oct 6, 2015
Developer accommodating container, process cartridge, electrophotographic image forming apparatus
CANON KK29 citations94
US9146500B2Sep 29, 2015
Developer accommodating unit
CANON KK35 citations94
US6792229B2Sep 14, 2004
Process cartridge, electrophotographic image forming apparatus and cartridge mounting method
CANON KK40 citations93
US6405004B2Jun 11, 2002
Process cartridge and image forming apparatus
CANON KK40 citations93
US6266502B1Jul 24, 2001
Process cartridge with cleaning frame having reinforcing member
CANON KK26 citations93
US6208817B1Mar 27, 2001
Developing apparatus and method for assembling the same
CANON KK46 citations93
US6064841AMay 16, 2000
Power supply for a charging apparatus having a contact charger for charging an object to be charged
CANON KK26 citations93
US5832343ANov 3, 1998
Toner supply method, toner accommodation container, process cartridge and electrophotographic image forming apparatus
CANON KK44 citations93
US5781831AJul 14, 1998
Developing apparatus, process cartridge, image forming apparatus and assembly method for process cartridges
CANON KK23 citations93
US10175609B2Jan 8, 2019
Developer accommodating unit, process cartridge and electrophotographic image forming apparatus
CANON KK13 citations92
USD460980SJul 30, 2002
Image forming apparatus
CANON KK42 citations92
US8867955B2Oct 21, 2014
Developer accommodating unit, process cartridge and electrophotographic image forming apparatus
CANON KK34 citations91
US10620567B2Apr 14, 2020
Developer accommodating unit, process cartridge and electrophotographic image forming apparatus
CANON KK4 citations84
US10001727B2Jun 19, 2018
Developer accommodating container, developer accommodating unit, process cartridge, and electrophotographic image forming apparatus
CANON KK4 citations84
US9857733B2Jan 2, 2018
Sealing member having a seal portion and a supporting portion
CANON KK7 citations84
US9599930B2Mar 21, 2017
Developer accommodating container, developer accommodating unit, process cartridge, and electrophotographic image forming apparatus
CANON KK7 citations84
US9360831B2Jun 7, 2016
Developing unit, process cartridge and image forming apparatus
CANON KK11 citations84
US9304439B2Apr 5, 2016
Developer accommodating container, developer accommodating unit, process cartridge, electrophotographic image forming apparatus
CANON KK9 citations84
US9213263B2Dec 15, 2015
Flexible developer accommodating container with unsealable openings
CANON KK8 citations84
US10423120B2Sep 24, 2019
Cartridge and image forming apparatus having roller supported by roller supporting portions
CANON KK3 citations73
US10185251B2Jan 22, 2019
Reproduction method for developing device
CANON KK2 citations73
US10162289B2Dec 25, 2018
Developer accommodating container, developer accommodating unit, process cartridge, electrophotographic image forming apparatus
CANON KK3 citations73
US8824918B2Sep 2, 2014
Developer accommodating unit, process cartridge, electrophotographic image forming apparatus
CANON KK4 citations73
US9500977B2Nov 22, 2016
Roller member, roller supporting mechanism, and metallic shaft for forming an image with a laser
CANON KK4 citations71
US12510845B2Dec 30, 2025
Image forming apparatus with pump portion for generating air to move toner to toner supplying device to developing device
CANON KK0 citations62
Showing the top 50 of 67 patents by PatentIndex Score.