Inventor
KAI TSUKURU
JP67 patents
⚠️ This page may combine multiple inventors who share the name “KAI TSUKURU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
40 patentsUS6366751B1Apr 2, 2002
Image forming apparatus including preselected range between charge injection layer and voltage potential
RICOH KK182 citations99
US6721516B2Apr 13, 2004
Image forming apparatus
RICOH KK85 citations98
US6505014B2Jan 7, 2003
Image forming apparatus and an image forming process unit
RICOH KK116 citations98
US6597884B2Jul 22, 2003
Image forming apparatus including electrostatic conveyance of charged toner
RICOH KK79 citations97
US6125243ASep 26, 2000
Toner replenishing and developer replacing device for a developing unit of an image forming apparatus
RICOH KK106 citations97
US5915155AJun 22, 1999
Toner replenishing and developer replacing device for a developing unit of an image forming apparatus
RICOH KK110 citations97
US6757509B2Jun 29, 2004
Image forming apparatus
RICOH KK56 citations96
US6671484B2Dec 30, 2003
Image forming apparatus having developing device with magnet roller with particular magnetic flux density
RICOH KK45 citations96
US6658227B2Dec 2, 2003
Development method apparatus, image formation and process cartridge for suppressing variation in toner charge
RICOH KK63 citations96
US6597885B2Jul 22, 2003
Image forming apparatus having a developing device with a magnet brush
RICOH KK45 citations96
US6442364B2Aug 27, 2002
Image forming apparatus having a developer carrier capable of preventing toner adhesion
RICOH KK72 citations96
US5774772AJun 30, 1998
Toner cartridge having a toner stirring member
RICOH KK66 citations96
US5638159AJun 10, 1997
Developing unit for an image forming apparatus and method of collecting bicomponent developer therefrom
RICOH KK81 citations96
US5606408AFeb 25, 1997
Image forming apparatus and cleaning device therefor
RICOH KK73 citations96
US5598254AJan 28, 1997
Cartridge for replenishing two-ingredient developer to an image forming apparatus and a replenishing device using the same
RICOH KK54 citations96
US5416568AMay 16, 1995
Developing unit for an image forming apparatus
RICOH KK67 citations96
US5235384AAug 10, 1993
Image forming apparatus with replaceable process units
RICOH KK72 citations96
US5109254AApr 28, 1992
Developing apparatus
RICOH KK101 citations96
US6978109B2Dec 20, 2005
Image forming apparatus
RICOH KK20 citations93
US6901233B2May 31, 2005
Image forming apparatus
RICOH KK23 citations93
US6823163B2Nov 23, 2004
Image forming apparatus including an electric field having an oscillation component between an image carrier and a developer carrier
RICOH KK20 citations93
US6819901B1Nov 16, 2004
Developing method and a developing device for image forming apparatus
RICOH KK27 citations93
US6819892B2Nov 16, 2004
Electrophotographic image forming apparatus including air conditioning means for removing harmful substances
RICOH KK42 citations93
US6757511B2Jun 29, 2004
Image forming apparatus and method using a magnetic toner brush
RICOH KK40 citations93
US6456806B2Sep 24, 2002
Developing method, device, and image forming apparatus with magnet brush
RICOH KK22 citations93
US6449452B1Sep 10, 2002
Method and apparatus for image developing capable of using developer in a magnet brush form
RICOH KK30 citations93
US6385423B1May 7, 2002
Image forming apparatus and developing device therefor capable of increasing image density of a low contrast image
RICOH KK30 citations93
US5323214AJun 21, 1994
Image forming apparatus having an electrostatic actuator
RICOH KK20 citations93
US6792234B2Sep 14, 2004
Developing device having a developer carrier including main and auxiliary magnetic poles and image forming apparatus using the same
RICOH KK35 citations92
US6778805B2Aug 17, 2004
Image forming apparatus having a developing device with a magnet brush
RICOH KK34 citations92
US6701114B2Mar 2, 2004
Image forming apparatus and image forming process unit with developer carried on a developer carrier
RICOH KK43 citations92
USRE36301ESep 14, 1999
Image forming apparatus having rotatable electrophotographic process unit
RICOH KK25 citations92
US5619316AApr 8, 1997
Image forming apparatus
RICOH KK53 citations92
US5367363ANov 22, 1994
Image forming apparatus having rotatable electrophotographic process unit
RICOH KK42 citations92
US5255059AOct 19, 1993
Image forming apparatus
RICOH KK27 citations92
US6081684AJun 27, 2000
Method and apparatus for image forming capable of performing an improved circulation of developer
RICOH KK33 citations87
US7099611B2Aug 29, 2006
Method and apparatus for image forming capable of reducing mechanical stresses to developers during transportation for development
RICOH KK13 citations84
US5442430AAug 15, 1995
Color image forming apparatus and cleaning device therefor
RICOH KK19 citations82
US6782225B2Aug 24, 2004
Image forming apparatus having plurality of developing sections with particular magnetic flux density
RICOH KK9 citations74
US5555469ASep 10, 1996
Image forming apparatus having toner recycling device with electrostatic conveyor
RICOH KK10 citations74
KOMATSU MAKOTO
3 patentsUS8886095B2Nov 11, 2014
Powder container, powder supply device and image-forming apparatus
KOMATSU MAKOTO8 citations84
US8965250B2Feb 24, 2015
Cap, powder container, developer supply device, and image forming apparatus
KOMATSU MAKOTO8 citations83
US9405221B2Aug 2, 2016
Powder container and image forming apparatus incorporating same
KOMATSU MAKOTO5 citations72
MIYOSHI YASUO
3 patentsUS8571449B2Oct 29, 2013
Development device, process cartridge, and image forming apparatus
MIYOSHI YASUO5 citations83
US8750752B2Jun 10, 2014
Development device including a removable seal to seal a supplied-developer and/or a collected-developer communicating area
MIYOSHI YASUO4 citations72
US8135314B2Mar 13, 2012
Developing device, process cartridge, and image forming apparatus, method of developing latent image
MIYOSHI YASUO6 citations72
HOSOKAWA HIROSHI
2 patentsRICOH CO LTD
1 patentYAMAGUCHI DAICHI
1 patentShowing the top 50 of 67 patents by PatentIndex Score.