Inventor
IWAKURA YOSHIE
JP46 patents
⚠️ This page may combine multiple inventors who share the name “IWAKURA YOSHIE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHARP KK
39 patentsUS6134415AOct 17, 2000
Roller/belt type multiple color image transfer apparatus including decreasing contact region widths between successive image support/transfer roller pairs and common power Supply for transfer means and charger means
SHARP KK36 citations92
US5799225AAug 25, 1998
Image forming apparatus having variable transfer and attraction voltage
SHARP KK19 citations92
US7215914B2May 8, 2007
Transfer device
SHARP KK16 citations84
US7164877B2Jan 16, 2007
Image forming apparatus
SHARP KK12 citations84
US7159862B2Jan 9, 2007
Sheet delivery mechanism for image forming apparatus
SHARP KK10 citations84
US7254359B2Aug 7, 2007
Transfer apparatus and image forming apparatus
SHARP KK8 citations74
US5771430AJun 23, 1998
Image forming apparatus with toner transfer
SHARP KK9 citations74
US5745820AApr 28, 1998
Image forming apparatus with a potential generating device
SHARP KK16 citations74
US5697034ADec 9, 1997
Image forming apparatus which stably holds a uniform surface potential of a transfer device
SHARP KK12 citations74
US7418234B2Aug 26, 2008
Image forming apparatus
SHARP KK8 citations73
US7218874B2May 15, 2007
Image forming apparatus and method for controlling fixing mechanism portion
SHARP KK7 citations73
US6259869B1Jul 10, 2001
Image forming apparatus
SHARP KK4 citations73
US6233422B1May 15, 2001
Image forming apparatus having transfer drum with transfer paper charging member
SHARP KK8 citations73
US6026256AFeb 15, 2000
Image forming apparatus
SHARP KK5 citations73
US5477308ADec 19, 1995
Image forming apparatus having an image-quality correction function
SHARP KK10 citations71
US7415218B2Aug 19, 2008
Image forming apparatus having charging unit with separate intake and exhaust ducts
SHARP KK5 citations63
US7330686B2Feb 12, 2008
Color image forming apparatus including a voltage attenuating intermediate transfer belt
SHARP KK4 citations63
US7280788B2Oct 9, 2007
Image forming apparatus and transferring method
SHARP KK2 citations63
US7245865B2Jul 17, 2007
Transfer apparatus and image forming apparatus
SHARP KK2 citations63
US7130570B2Oct 31, 2006
Transfer device
SHARP KK4 citations63
US7062209B2Jun 13, 2006
Transfer device with coaxial rotating cams
SHARP KK5 citations63
US5909611AJun 1, 1999
Image forming apparatus
SHARP KK5 citations63
US5758244AMay 26, 1998
Transfer device for an image forming apparatus
SHARP KK6 citations63
US7369800B2May 6, 2008
Device for preventing contact between transfer body and transfer medium tail edge portion in image forming apparatus
SHARP KK5 citations62
US7251450B2Jul 31, 2007
Paper separator and processor cartridge
SHARP KK6 citations62
US7158750B2Jan 2, 2007
Paper transport apparatus and paper transport method
SHARP KK2 citations62
US7058336B2Jun 6, 2006
Access-controlling mechanism and image forming apparatus
SHARP KK5 citations62
US6169862B1Jan 2, 2001
Image forming apparatus with nip time changing device
SHARP KK1 citations62
US6097923AAug 1, 2000
Image forming method and apparatus
SHARP KK4 citations62
US6081686AJun 27, 2000
Image forming apparatus having transfer drum with specific construction
SHARP KK2 citations62
US6078772AJun 20, 2000
Image-forming apparatus
SHARP KK5 citations62
US7379694B2May 27, 2008
Belt transfer apparatus and image forming device
SHARP KK6 citations61
US7305207B2Dec 4, 2007
Cleaning system
SHARP KK0 citations52
US7221883B2May 22, 2007
Electrostatic image transfer device using intermediate transfer belt having simplified image transfer voltage requirements
SHARP KK0 citations52
US6954605B2Oct 11, 2005
Transfer device having casing with elastic member
SHARP KK0 citations52
US6118954ASep 12, 2000
Image forming apparatus having transfer roller with charge-removing and cleaning devices
SHARP KK0 citations52
US7398041B2Jul 8, 2008
Color image forming apparatus using base-layer
SHARP KK0 citations42
US7236713B2Jun 26, 2007
Image forming device including secondary transfer counter roller switchable between ground and electrically floating states to facilitate removal of recording medium from intermediate transfer member
SHARP KK0 citations42
US7796919B2Sep 14, 2010
Image forming apparatus capable of preventing worsening of image quality caused by excessively charged developer
SHARP KK0 citations39
RICOH KK
4 patentsUS7587159B2Sep 8, 2009
Image forming method and apparatus including a relationship between secondary roller diameter and recording medium ingress position
RICOH KK11 citations84
US7428400B2Sep 23, 2008
Primary transfer unit of image forming apparatus
RICOH KK16 citations84
US7734235B2Jun 8, 2010
Image forming apparatus including a metallic driving roller
RICOH KK7 citations73
US7636539B2Dec 22, 2009
Tandem intermediate-transfer type image forming apparatus
RICOH KK5 citations62