Inventor
SAWAI YUUJI
JP35 patents
⚠️ This page may combine multiple inventors who share the name “SAWAI YUUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
24 patentsUS6741821B2May 25, 2004
Image forming apparatus, and process cartridge for use in image forming apparatus
RICOH KK71 citations98
US6697595B2Feb 24, 2004
Method and apparatus for forming an image with no degradation
RICOH KK77 citations98
US6618565B2Sep 9, 2003
Transfer bias applying method for an image forming apparatus and device for the same
RICOH KK80 citations98
US6901234B2May 31, 2005
Image forming apparatus including an intermediate image transfer belt and high resistance contact member
RICOH KK70 citations97
US6611672B2Aug 26, 2003
Image forming apparatus, monocolor image forming apparatus, toner recycling apparatus and intermediate transfer member
RICOH KK90 citations97
US7003238B2Feb 21, 2006
Intermediate image transfer device for a color image forming apparatus
RICOH KK62 citations96
US6829450B2Dec 7, 2004
Transfer bias applying method for an image forming apparatus and device for the same
RICOH KK59 citations96
US6785500B2Aug 31, 2004
Image forming apparatus including image transfer body with elastic layer and coating layer
RICOH KK65 citations96
US6516179B1Feb 4, 2003
Image forming apparatus, image transferring device and recording medium conveying method
RICOH KK48 citations96
US7610004B2Oct 27, 2009
Apparatus for detecting amount of toner deposit and controlling density of image, method of forming misalignment correction pattern, and apparatus for detecting and correcting misalignment of image
RICOH KK21 citations92
US7502583B2Mar 10, 2009
Transfer device and image forming apparatus for enhancement of an image stored on a recording medium
RICOH KK25 citations92
US7346287B2Mar 18, 2008
Transfer device for forming a stable transfer electric field, and an image forming apparatus including the transfer device
RICOH KK25 citations92
US7280792B2Oct 9, 2007
Method for evaluating changes in resistance of electric resistance member and image forming apparatus using same
RICOH KK34 citations92
US7203433B2Apr 10, 2007
Apparatus for detecting amount of toner deposit and controlling density of image, method of forming misalignment correction pattern, and apparatus for detecting and correcting misalignment of image
RICOH KK43 citations92
US7174124B2Feb 6, 2007
Tandem color image forming apparatus with an image transfer belt and backup roller
RICOH KK25 citations92
US6983121B2Jan 3, 2006
Image forming apparatus, image transferring device and recording medium conveying method
RICOH KK16 citations92
US6885842B2Apr 26, 2005
Image forming apparatus with photoconductive element and intermediate image transfer member
RICOH KK19 citations92
US6823149B2Nov 23, 2004
Image forming apparatus with variable speed transferring and fixing devices
RICOH KK43 citations92
US6813471B2Nov 2, 2004
Image forming apparatus, image transferring device and recording medium conveying method
RICOH KK28 citations92
US6768892B2Jul 27, 2004
Image forming apparatus with a photoconductive element and intermediate image transfer member
RICOH KK28 citations92
US7277662B2Oct 2, 2007
Belt member, belt driving unit, and image forming apparatus
RICOH KK9 citations74
US7742729B2Jun 22, 2010
Transfer device, image forming apparatus and method for evaluating electric property
RICOH KK4 citations63
US7684741B2Mar 23, 2010
Image forming apparatus
RICOH KK2 citations63
US7809314B2Oct 5, 2010
Image forming apparatus capable of preventing generation of residual images and transfer failure
RICOH KK0 citations42
HOZUMI YOSHIKI
4 patentsUS9238552B2Jan 19, 2016
Belt tracking system, roller assembly, and image forming apparatus including same
HOZUMI YOSHIKI11 citations84
US9561912B2Feb 7, 2017
Belt tracking system, multi-roller assembly and image forming apparatus employing same
HOZUMI YOSHIKI5 citations73
US8944243B2Feb 3, 2015
Belt tracking system, multi-roller assembly and image forming apparatus employing same
HOZUMI YOSHIKI3 citations62
US9376257B2Jun 28, 2016
Belt tracking system, multi-roller assembly and image forming apparatus employing same
HOZUMI YOSHIKI0 citations52
ASAOKA AKIRA
3 patentsUS8657104B2Feb 25, 2014
Belt positioning system, multi-roller assembly and image forming apparatus employing same
ASAOKA AKIRA9 citations83
US9145258B2Sep 29, 2015
Belt positioning system, multi-roller assembly and image forming apparatus employing same
ASAOKA AKIRA2 citations62
US9260248B2Feb 16, 2016
Belt positioning system, multi-roller assembly and image forming apparatus employing same
ASAOKA AKIRA1 citations51
RICOH CO LTD
3 patentsUS8014708B2Sep 6, 2011
Belt member, transfer unit incorporating same, image forming apparatus incorporating same, and method of evaluating same
RICOH CO LTD4 citations63
US7953355B2May 31, 2011
Endless belt member, transfer unit incorporating same, and image forming apparatus incorporating same
RICOH CO LTD3 citations63
US7860438B2Dec 28, 2010
Image forming apparatus using toner including an external additive at an additive burial rate of not less than 40 percent
RICOH CO LTD0 citations42