Inventor
HORIKAWA TADASHI
JP48 patents
⚠️ This page may combine multiple inventors who share the name “HORIKAWA TADASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
43 patentsUS6681088B2Jan 20, 2004
Process cartridge, image forming apparatus and separating mechanism for separating developing member from photosensitive drum
CANON KK250 citations99
US6385416B1May 7, 2002
Space securing member, developing device, charging device and process cartridge
CANON KK216 citations99
US9213267B2Dec 15, 2015
Developing device frame unit, developing device, process cartridge, and manufacturing method of the developing device frame unit
CANON KK45 citations98
US7933534B2Apr 26, 2011
Developing device frame unit, developing device, process cartridge, and manufacturing method of the developing device frame unit
CANON KK88 citations98
US6587660B2Jul 1, 2003
Developing apparatus
CANON KK62 citations96
US9182733B2Nov 10, 2015
Developer supply cartridge, process cartridge and image forming apparatus
CANON KK32 citations94
US7386241B2Jun 10, 2008
Processing cartridge rotating a drum shaft in different directions and image forming apparatus mounting such a cartridge
CANON KK42 citations93
US7366440B2Apr 29, 2008
Process cartridge feeding developer from first to second removed developer accommodating portions and image forming apparatus to which the cartridge is mountable
CANON KK41 citations93
US6553189B2Apr 22, 2003
Optical guide, process cartridge, and electrophotographic image forming apparatus
CANON KK54 citations93
US6195515B1Feb 27, 2001
Developing apparatus including a seal member sandwiched between a developer bearing member and a leakage preventing member
CANON KK35 citations93
US6144820ANov 7, 2000
Developing apparatus with a sealing member having an insulating layer and a conductive portion
CANON KK32 citations93
USD639846SJun 14, 2011
Process cartridge
CANON KK28 citations92
USD639335SJun 7, 2011
Process cartridge
CANON KK30 citations92
USD638057SMay 17, 2011
Process cartridge
CANON KK30 citations92
USD638056SMay 17, 2011
Process cartridge
CANON KK22 citations92
US11703794B2Jul 18, 2023
Cartridge and image forming apparatus
CANON KK4 citations86
US10678184B2Jun 9, 2020
Image forming apparatus and cartridge
CANON KK11 citations86
US11169483B2Nov 9, 2021
Process cartridge and electrophotographic image forming apparatus
CANON KK6 citations84
US10901366B2Jan 26, 2021
Image forming apparatus and cartridge
CANON KK5 citations84
US10627780B2Apr 21, 2020
Cartridge and image forming apparatus
CANON KK9 citations84
USD873341SJan 21, 2020
Process cartridge for image forming apparatus
CANON KK7 citations84
USD599846SSep 8, 2009
Process cartridge
CANON KK15 citations84
USD599847SSep 8, 2009
Toner cartridge
CANON KK10 citations84
US6549735B2Apr 15, 2003
Developing apparatus with longitudinal end leakage preventing member in contact with smooth surface part of a developer carrying member
CANON KK19 citations84
US10962927B2Mar 30, 2021
Cartridge and imaging forming apparatus
CANON KK5 citations82
USD474497SMay 13, 2003
Image forming apparatus
CANON KK10 citations74
USD474232SMay 6, 2003
Image forming apparatus
CANON KK8 citations74
US12072664B2Aug 27, 2024
Cartridge and image forming apparatus
CANON KK2 citations73
US11720055B2Aug 8, 2023
Process cartridge and electrophotographic image forming apparatus
CANON KK1 citations73
US11402798B2Aug 2, 2022
Process cartridge and electrophotographic image forming apparatus
CANON KK2 citations73
US11392081B2Jul 19, 2022
Process cartridge and electrophotographic image forming apparatus
CANON KK2 citations73
US11449001B2Sep 20, 2022
Cartridge and image forming apparatus
CANON KK2 citations71
US9280136B2Mar 8, 2016
Photosensitive cartridge having locking member, developing cartridge attachable to photosensitive cartridge having locking member, process cartridge having locking member, and image forming apparatus having locking member
CANON KK2 citations63
US7979009B2Jul 12, 2011
Developer supplying cartridge including a developer supplying port shutter portion and electrophotographic image forming apparatus using the cartridge
CANON KK2 citations63
US12019392B2Jun 25, 2024
Process cartridge and electrophotographic image forming apparatus
CANON KK0 citations62
US11803153B2Oct 31, 2023
Process cartridge and electrophotographic image forming apparatus
CANON KK0 citations62
US12429811B2Sep 30, 2025
Cartridge and image forming apparatus
CANON KK0 citations61
US9946195B2Apr 17, 2018
Developer container developing device process cartridge and image forming apparatus
CANON KK0 citations52
US9846386B2Dec 19, 2017
Developer container, developing device, process cartridge, and image forming apparatus
CANON KK0 citations52
US9389578B2Jul 12, 2016
Image-forming apparatus
CANON KK1 citations52
US10649394B2May 12, 2020
Method of manufacturing frame unit, method of manufacturing image carrying unit, method of manufacturing cartridge, and cartridge
CANON KK0 citations42
US10564597B2Feb 18, 2020
Method for manufacturing image bearing unit and method for manufacturing cartridge
CANON KK0 citations42
US10520883B2Dec 31, 2019
Method for manufacturing image bearing unit and method for manufacturing cartridge
CANON KK0 citations42