Inventor
YAMANAKA TETSUO
JP43 patents
⚠️ This page may combine multiple inventors who share the name “YAMANAKA TETSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
38 patentsUS6903759B2Jun 7, 2005
Method and apparatus for image forming capable of effectively performing color image position adjustment
RICOH KK32 citations96
US6714224B2Mar 30, 2004
Method and apparatus for image forming capable of effectively performing color image position adjustment
RICOH KK61 citations96
US6033818AMar 7, 2000
Developing device for an image forming apparatus
RICOH KK53 citations96
US5879752AMar 9, 1999
Method of coating a toner conveyor roller
RICOH KK62 citations96
US5845183ADec 1, 1998
Developing device for an image forming apparatus
RICOH KK52 citations96
US5826144AOct 20, 1998
Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller
RICOH KK68 citations96
US5768665AJun 16, 1998
Image forming apparatus with bias control to prevent undesirable toner deposition
RICOH KK58 citations96
US5708942AJan 13, 1998
Developing device for an image forming apparatus
RICOH KK53 citations96
US5697026ADec 9, 1997
Developing device having the lengths of two toner transporting rollers and an image bearing member in specific relationships
RICOH KK62 citations96
US5625441AApr 29, 1997
Developing device for an image forming apparatus
RICOH KK54 citations96
US5625440AApr 29, 1997
Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering
RICOH KK64 citations96
US5625438AApr 29, 1997
Toner, and devices for electrostatically depositing a uniform application thereof
RICOH KK40 citations96
US5617191AApr 1, 1997
Toner conveyor roller and image forming apparatus having the same
RICOH KK84 citations96
US5489747AFeb 6, 1996
Developing device for an image forming apparatus
RICOH KK73 citations96
US5486909AJan 23, 1996
Developing device for an image forming apparatus
RICOH KK56 citations96
US5482265AJan 9, 1996
Sheet feeder for an image forming apparatus
RICOH KK91 citations96
US5666625ASep 9, 1997
Device for electrostatically developing a latent image on an image carrier
RICOH KK62 citations95
US6212343B1Apr 3, 2001
Developing device, process cartridge and image forming apparatus that prevent toner leakage
RICOH KK93 citations94
US6163666ADec 19, 2000
Process cartridge and an image forming apparatus using the same process cartridge and a method of manufacturing the same process cartridge
RICOH KK81 citations94
US5689782ANov 18, 1997
Developing apparatus for electronic photographic recording equipment, having two developer transfer rollers
RICOH KK64 citations94
US6920303B2Jul 19, 2005
Color offset detecting apparatus and method
RICOH KK36 citations93
US6708017B2Mar 16, 2004
Image forming apparatus including controller to start driving movable body after image carrier
RICOH KK17 citations93
US5717981AFeb 10, 1998
Developing device for electrophotographic image forming apparatus
RICOH KK29 citations93
US6829465B2Dec 7, 2004
Method and apparatus for image forming capable of effectively performing color displacement detection
RICOH KK38 citations92
US5930561AJul 27, 1999
Process cartridge and image-formation device suitable for miniaturization
RICOH KK44 citations92
US5897243AApr 27, 1999
Electrophotographic recording apparatus configured to switch a bias voltage in a developing unit
RICOH KK49 citations92
US5552870ASep 3, 1996
Developing device for an image forming apparatus
RICOH KK39 citations92
US5212521AMay 18, 1993
Developing unit housing with toner seals for image recording apparatus
RICOH KK41 citations91
US6934498B2Aug 23, 2005
Color image forming apparatus, tandem type color image forming apparatus, and process cartridge for color image forming apparatus
RICOH KK15 citations84
US7664407B2Feb 16, 2010
Method and apparatus for image forming capable of effectively performing color image position adjustment
RICOH KK6 citations74
US7505697B2Mar 17, 2009
Method and apparatus for image forming capable of effectively performing color image position adjustment
RICOH KK6 citations74
US5610693AMar 11, 1997
Developing device for an image forming apparatus
RICOH KK16 citations74
US7551867B2Jun 23, 2009
Image forming apparatus including controller driving image carriers
RICOH KK4 citations71
US7136600B2Nov 14, 2006
Image forming apparatus including controller driving image carriers
RICOH KK10 citations71
US7376363B2May 20, 2008
Method and apparatus for image forming capable of effectively performing color image position adjustment
RICOH KK3 citations63
US6889029B2May 3, 2005
Image forming apparatus including driving means disposed downstream of nip
RICOH KK4 citations63
US7386259B2Jun 10, 2008
Image forming apparatus including controller driving image carriers
RICOH KK2 citations60
US7787787B2Aug 31, 2010
Image forming apparatus including controller driving image carriers
RICOH KK0 citations48
RICOH CO LTD
2 patentsHITACHI CHEMICAL CO LTD
2 patentsUS7700802B2Apr 20, 2010
Method of separating stereoisomers of dicarboxylic acid having norbornene or norbornane structure, or derivative thereof
HITACHI CHEMICAL CO LTD0 citations42
US6900273B1May 31, 2005
Low-hygroscopicity low-birefringence resin compositions, molding material obtained therefrom, sheet or film, and optical part
HITACHI CHEMICAL CO LTD0 citations36