Inventor
ARUGA TOMOE
JP45 patents
Patents
45 patentsUS7058345B2Jun 6, 2006
Transfer belt unit and image forming apparatus using the same
SEIKO EPSON CORP19 citations93
US6865361B2Mar 8, 2005
Transfer belt unit and image forming apparatus using the same
SEIKO EPSON CORP28 citations93
US6799011B2Sep 28, 2004
Tandem-type color image forming apparatus
SEIKO EPSON CORP44 citations93
US5950052ASep 7, 1999
Image forming apparatus
SEIKO EPSON CORP34 citations93
US6975829B2Dec 13, 2005
Device for fixing an image on a sheet medium
SEIKO EPSON CORP35 citations92
US6907215B2Jun 14, 2005
Developing device and image forming apparatus incorporating the same
SEIKO EPSON CORP26 citations92
US6336022B2Jan 1, 2002
Developing unit
SEIKO EPSON CORP15 citations92
US6198893B1Mar 6, 2001
Image forming apparatus having a plurality of developing units
SEIKO EPSON CORP16 citations92
US6192209B1Feb 20, 2001
Developing unit
SEIKO EPSON CORP16 citations92
US6163674ADec 19, 2000
Developing unit having developing roller with restraining blade
SEIKO EPSON CORP18 citations92
US5303104AApr 12, 1994
Disk drive apparatus having carriage driving mechanism
SEIKO EPSON CORP24 citations92
US5081551AJan 14, 1992
Recording and reproducing apparatus
SEIKO EPSON CORP32 citations92
US4882644ANov 21, 1989
Magnetic head supporting mechanism
SEIKO EPSON CORP32 citations89
US7418229B2Aug 26, 2008
Fusing unit that stabilizes a contact nip region
SEIKO EPSON CORP9 citations84
US7024145B2Apr 4, 2006
Fixing device for fixing an unfixed toner image formed on a sheet-shaped recording medium
SEIKO EPSON CORP12 citations84
US7406286B2Jul 29, 2008
Fixing device and image forming apparatus including a heating roller with multiple heaters
SEIKO EPSON CORP11 citations83
US6993270B2Jan 31, 2006
Belt member incorporated in image forming apparatus
SEIKO EPSON CORP13 citations83
US6226484B1May 1, 2001
Developing unit using specific developer composition
SEIKO EPSON CORP12 citations82
US6151474ANov 21, 2000
Developing unit using elastic supply roller
SEIKO EPSON CORP11 citations82
US6094554AJul 25, 2000
Developing unit having developing roller with specific side surface roughness
SEIKO EPSON CORP11 citations82
US5537191AJul 16, 1996
Image forming apparatus with toner transport mechanism incorporated therein
SEIKO EPSON CORP16 citations82
US5610782AMar 11, 1997
Floppy disk drive device
SEIKO EPSON CORP12 citations81
US5469421ANov 21, 1995
Floppy disk drive device
SEIKO EPSON CORP16 citations81
US4825314AApr 25, 1989
Disc drive
SEIKO EPSON CORP20 citations81
US7630671B2Dec 8, 2009
Developing system that distributes carrier to developer containers in a manner to achieve stable image formation
SEIKO EPSON CORP7 citations74
US7218883B2May 15, 2007
Image forming apparatus
SEIKO EPSON CORP8 citations74
US6295433B1Sep 25, 2001
Developing unit having a conveying fin for loading a supply roller with toner
SEIKO EPSON CORP7 citations74
US5729804AMar 17, 1998
Toner storage device and supply mechanism for image forming
SEIKO EPSON CORP15 citations73
US5633699AMay 27, 1997
Structure for mounting a rotary member and image forming apparatus using same structure
SEIKO EPSON CORP8 citations73
US5121272AJun 9, 1992
Apparatus for centering the magnetic disc in a magnetic disc drive
SEIKO EPSON CORP11 citations72
US4903155AFeb 20, 1990
Disc drive
SEIKO EPSON CORP6 citations72
US5303102AApr 12, 1994
Disk drive apparatus having head guard
SEIKO EPSON CORP11 citations66
US5032941AJul 16, 1991
Magnetic head feeding device
SEIKO EPSON CORP6 citations66
US7493066B2Feb 17, 2009
Developing device
SEIKO EPSON CORP2 citations63
US7103307B2Sep 5, 2006
Fixing device and image forming apparatus incorporating the same
SEIKO EPSON CORP4 citations63
US5036417AJul 30, 1991
Magnetic head feeding device with a rack and pinion
SEIKO EPSON CORP4 citations63
US4757409AJul 12, 1988
Carriage movement device for a magnetic memory device
SEIKO EPSON CORP2 citations63
USRE37503EJan 8, 2002
Floppy disk drive device
SEIKO EPSON CORP2 citations62
US7917065B2Mar 29, 2011
Image forming apparatus that collects and filters excess liquid developer
SEIKO EPSON CORP0 citations52
US7742723B2Jun 22, 2010
Developing device having cleaning blade for cleaning development roller
SEIKO EPSON CORP0 citations52
US7215917B2May 8, 2007
Fusing device with stable nipping portion
SEIKO EPSON CORP0 citations52
USRE37426EOct 30, 2001
Floppy disk dive device
SEIKO EPSON CORP0 citations51
US7769325B2Aug 3, 2010
Developer conveying apparatus and image forming apparatus using the same
SEIKO EPSON CORP0 citations42
US7657210B2Feb 2, 2010
Developer collection system and image forming apparatus using the same
SEIKO EPSON CORP0 citations42
US7383008B2Jun 3, 2008
Fixing rubber roller, fixing device and image forming apparatus incorporating the same
SEIKO EPSON CORP0 citations42