Inventor
NAKAZATO YASUSHI
JP88 patents
⚠️ This page may combine multiple inventors who share the name “NAKAZATO YASUSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
46 patentsUS6400917B2Jun 4, 2002
Image forming apparatus for reducing banding caused by vibration of stacked image forming cartridges
RICOH KK82 citations99
US6799012B2Sep 28, 2004
Cleaning device and image forming apparatus using the same
RICOH KK72 citations98
US6381435B2Apr 30, 2002
Color image forming apparatus
RICOH KK163 citations98
US6295435B1Sep 25, 2001
Image forming apparatus which corrects deviations between images of different colors
RICOH KK118 citations97
US6236820B1May 22, 2001
Image forming apparatus for reducing banding caused by vibration of stacked image forming cartridges
RICOH KK75 citations97
US7203431B2Apr 10, 2007
Abnormality determining method, abnormality determining apparatus, and image forming apparatus
RICOH KK54 citations96
US7110917B2Sep 19, 2006
Abnormality determining method, and abnormality determining apparatus and image forming apparatus using same
RICOH KK57 citations96
US6768886B2Jul 27, 2004
Image forming apparatus
RICOH KK28 citations96
US6760557B2Jul 6, 2004
Image forming apparatus
RICOH KK19 citations96
US6697588B2Feb 24, 2004
Image forming apparatus
RICOH KK35 citations96
US6681096B2Jan 20, 2004
Image formation apparatus, printer, copying machine, and facsimile device
RICOH KK62 citations96
US6580887B2Jun 17, 2003
Image forming apparatus including structural members between consecutive optical writing devices
RICOH KK32 citations96
US6466754B2Oct 15, 2002
Image forming apparatus for reducing banding caused by vibration of stacked image forming cartridges
RICOH KK40 citations96
US5740494AApr 14, 1998
Configured to enhance toner collecting efficiency and toner redepositing efficiency
RICOH KK91 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
US5482265AJan 9, 1996
Sheet feeder for an image forming apparatus
RICOH KK91 citations96
US4876606AOct 24, 1989
Image forming system
RICOH KK82 citations95
US4924320AMay 8, 1990
Image system with connection to operational units
RICOH KK54 citations94
US7457550B2Nov 25, 2008
Abnormality determining apparatus, image forming apparatus, copying machine, and information obtaining method
RICOH KK32 citations93
US7327962B2Feb 5, 2008
Abnormality determining method, abnormality determining apparatus, and image forming apparatus
RICOH KK35 citations93
US7286786B2Oct 23, 2007
Image forming method and apparatus including dismountable cartridges
RICOH KK10 citations93
US7050739B2May 23, 2006
Image forming apparatus with horizontal structural members
RICOH KK15 citations93
US6819892B2Nov 16, 2004
Electrophotographic image forming apparatus including air conditioning means for removing harmful substances
RICOH KK42 citations93
US6669189B2Dec 30, 2003
Image forming apparatus
RICOH KK49 citations93
US6470169B2Oct 22, 2002
Image forming apparatus and method, a printer, a copying machine, a facsimile device set, and complex machine
RICOH KK46 citations93
US7383013B2Jun 3, 2008
Image forming apparatus using a contact or a proximity type of charging system including a protection substance on a moveable body to be charged
RICOH KK18 citations92
US7340204B2Mar 4, 2008
Color image forming apparatus and process cartridge therefor
RICOH KK21 citations92
US6987944B2Jan 17, 2006
Cleaning device and image forming apparatus using the cleaning device
RICOH KK40 citations92
US6721523B2Apr 13, 2004
Charging device, image forming unit and image forming device
RICOH KK35 citations92
US6345170B1Feb 5, 2002
Image forming apparatus for single-sided operation including a reversing device
RICOH KK41 citations92
US5765087AJun 9, 1998
Color image forming method and color image forming apparatus practicable therewith
RICOH KK51 citations92
US5194879AMar 16, 1993
Image forming apparatus capable of changing dotting density
RICOH KK33 citations92
US5034780AJul 23, 1991
Image forming apparatus
RICOH KK31 citations92
US4956678ASep 11, 1990
Recording sheet transport apparatus
RICOH KK37 citations92
US4855754AAug 8, 1989
Control device for an image recorder
RICOH KK34 citations92
US6034792AMar 7, 2000
Image reading device having two document setting sections
RICOH KK28 citations91
US5095371AMar 10, 1992
Duplex image forming system with number of single side printed sheets in feed path selected before printing second side
RICOH KK45 citations91
US5715500AFeb 3, 1998
Image reading device having an automatic document feeder with at least a removable document feeding section
RICOH KK28 citations89
US5464200ANov 7, 1995
Sheet storing device with locking bins
RICOH KK34 citations89
US7778555B2Aug 17, 2010
Abnormality determining apparatus, image forming apparatus, copying machine, and information obtaining method
RICOH KK14 citations84
US7382988B2Jun 3, 2008
Image forming apparatus
RICOH KK18 citations84
US7359660B2Apr 15, 2008
Developing device, process cartridge and image forming apparatus loaded therewith
RICOH KK15 citations84
US7058335B2Jun 6, 2006
Process cartridge and image forming apparatus with toner fed cleaning mode
RICOH KK12 citations84
US7058653B2Jun 6, 2006
Tree system diagram output method, computer program and recording medium
RICOH KK11 citations84
US7027751B2Apr 11, 2006
Electrophotographic image forming apparatus having residual toner collection
RICOH KK16 citations84
RICOH CO LTD
2 patentsUS7962054B2Jun 14, 2011
Image forming apparatus having a function of predicting device deterioration based on a plurality of types of operation control information
RICOH CO LTD11 citations84
US7903269B2Mar 8, 2011
Abnormality determining apparatus, image forming apparatus including the abnormality determining apparatus, and abnormality determining method
RICOH CO LTD11 citations84
NAKAZATO YASUSHI
2 patentsShowing the top 50 of 88 patents by PatentIndex Score.