Inventor
KOJIMA HISAYOSHI
JP43 patents
⚠️ This page may combine multiple inventors who share the name “KOJIMA HISAYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
41 patentsUS6608980B2Aug 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
US6072969AJun 6, 2000
Developing cartridge
CANON KK217 citations99
US6564029B2May 13, 2003
Cartridge having developer supply opening and image forming apparatus usable therewith
CANON KK85 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
US6345164B1Feb 5, 2002
Shutter pin and developing cartridge
CANON KK103 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
US6157792ADec 5, 2000
Electrophotographic apparatus having plural image forming modes, and a process cartridge applied to such electrophotographic apparatus
CANON KK122 citations98
US5963759AOct 5, 1999
Process cartridge and image forming apparatus to which process cartridge can detachably be mounted
CANON KK97 citations98
US5950049ASep 7, 1999
Developing cartridge
CANON KK111 citations98
US5940657AAug 17, 1999
Developing cartridge
CANON KK107 citations98
US5521693AMay 28, 1996
Image forming apparatus and process cartridge detachably mountable to same
CANON KK109 citations97
US6587660B2Jul 1, 2003
Developing apparatus
CANON KK62 citations96
US6404996B1Jun 11, 2002
Electrophotographic apparatus having plural image forming modes, and a process cartridge applied to such electrophotographic apparatus
CANON KK66 citations96
US6266503B1Jul 24, 2001
Method for attaching electrostatic photosensitive drum method for replacing electrophotographic photosensitive drum and process cartridge
CANON KK82 citations96
US6131011AOct 10, 2000
Method of adjusting the mounting of cleaning member, process cartridge and image forming apparatus
CANON KK62 citations96
US5235383AAug 10, 1993
Process cartridge and image forming apparatus using same
CANON KK72 citations95
USD519150SApr 18, 2006
Image forming apparatus
CANON KK41 citations93
US7003233B2Feb 21, 2006
Image forming apparatus with a toner replenishing control feature based on stored toner density and fluidity information, related method, and developing agent replenishing container for same
CANON KK30 citations93
US6463242B1Oct 8, 2002
Developing device, process cartridge and electrophotographic image forming apparatus
CANON KK49 citations93
US6389250B1May 14, 2002
Developing device, process cartridge and electrophotographic image forming apparatus
CANON KK31 citations93
US6314266B1Nov 6, 2001
Cleaning apparatus equipped with brush roller, process cartridge, and image forming apparatus
CANON KK46 citations93
US6178301B1Jan 23, 2001
Cleaning apparatus for cleaning an image carrier, process cartridge having a cleaning apparatus for removing remaining developer on an image carrier, and image forming apparatus having a cleaning member for removing remaining developer on an image carrier
CANON KK43 citations93
US5701558ADec 23, 1997
Developing apparatus for preventing developer from leaking from a developer container
CANON KK49 citations93
US5497220AMar 5, 1996
Developing cartridge having support member for rotatably supporting developing device, and developing apparatus
CANON KK29 citations93
US5442421AAug 15, 1995
Process cartridge and image forming apparatus using the same
CANON KK37 citations93
US5250994AOct 5, 1993
Image forming apparatus having transfer member supporting member
CANON KK37 citations93
US5249026ASep 28, 1993
Image forming system and process cartridge mountable on same
CANON KK38 citations93
US5528343AJun 18, 1996
Driving cartridge for an image forming apparatus
CANON KK48 citations92
US5471284ANov 28, 1995
Image forming apparatus having toner depletion detection feature
CANON KK28 citations92
US5414493AMay 9, 1995
Image forming apparatus
CANON KK39 citations92
US6839534B2Jan 4, 2005
Image forming apparatus and developer supply container removably mountable in image forming apparatus
CANON KK16 citations84
US6285851B1Sep 4, 2001
Cleaning apparatus which includes cleaning member, supporting portion and reinforcing member
CANON KK8 citations74
US11506993B2Nov 22, 2022
Toner cartridge and toner supplying mechanism
CANON KK1 citations73
US11360408B2Jun 14, 2022
Toner cartridge and toner supplying mechanism
CANON KK1 citations73
US10884356B2Jan 5, 2021
Toner cartridge and toner supplying mechanism
CANON KK1 citations73
US10747144B2Aug 18, 2020
Toner cartridge and toner supplying mechanism
CANON KK2 citations73
US10613453B2Apr 7, 2020
Toner cartridge and toner supplying mechanism
CANON KK1 citations73
US5428426AJun 27, 1995
Image forming system
CANON KK19 citations73
US11366409B2Jun 21, 2022
Toner cartridge and toner supplying mechanism
CANON KK1 citations63