Inventor
FUJIMORI KOHTA
JP43 patents
⚠️ This page may combine multiple inventors who share the name “FUJIMORI KOHTA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
18 patentsUS7551862B2Jun 23, 2009
Developing device, and process unit and image forming apparatus using the developing device
RICOH KK29 citations93
US6917779B2Jul 12, 2005
Toner conveying device and image forming apparatus including the toner conveying device
RICOH KK39 citations93
US7616909B2Nov 10, 2009
Image forming apparatus and image forming method
RICOH KK21 citations92
US7260335B2Aug 21, 2007
Image-information detecting device and image forming apparatus
RICOH KK24 citations92
US7251420B2Jul 31, 2007
Method and apparatus for image forming capable of effectively detecting toner density
RICOH KK42 citations92
US7228081B2Jun 5, 2007
Method and apparatus for image forming capable of controlling image-forming process conditions
RICOH KK37 citations92
US7778560B2Aug 17, 2010
Image forming apparatus and method of adjusting charge bias
RICOH KK10 citations84
US7747182B2Jun 29, 2010
Image forming apparatus with toner density control
RICOH KK9 citations84
US7664413B2Feb 16, 2010
Image forming device including a toner pattern forming unit
RICOH KK10 citations84
US7551866B2Jun 23, 2009
Image forming method and apparatus with improved conversion capability of amount of toner adhesion
RICOH KK8 citations84
US7551864B2Jun 23, 2009
Image forming apparatus and method of controlling an image quality
RICOH KK12 citations84
US7548704B2Jun 16, 2009
Image forming apparatus effectively conducting a process control
RICOH KK8 citations84
US7536121B2May 19, 2009
Image forming apparatus and image density control method
RICOH KK16 citations84
US7493058B2Feb 17, 2009
Image forming apparatus and toner concentration controlling method
RICOH KK13 citations84
US7515844B2Apr 7, 2009
Image density control method and image forming apparatus
RICOH KK19 citations83
US7672602B2Mar 2, 2010
Developing unit and image forming apparatus which forces consumption of toner
RICOH KK7 citations74
US7821677B2Oct 26, 2010
Method and apparatus for image forming capable of accurately detecting displacement of transfer images and image density
RICOH KK7 citations73
US7668471B2Feb 23, 2010
Image forming apparatus and image forming method
RICOH KK5 citations63
RICOH CO LTD
7 patentsUS8045874B2Oct 25, 2011
Image forming apparatus and image density control method
RICOH CO LTD9 citations84
US7881629B2Feb 1, 2011
Image forming apparatus and image density control method
RICOH CO LTD11 citations84
US8027605B2Sep 27, 2011
Image forming apparatus and image density control method
RICOH CO LTD2 citations63
US8009997B2Aug 30, 2011
Toner replenishment determination device of an image forming apparatus
RICOH CO LTD2 citations63
US7929873B2Apr 19, 2011
Image forming apparatus and image density control method
RICOH CO LTD5 citations61
US7885556B2Feb 8, 2011
Image forming apparatus for correcting a toner density target value
RICOH CO LTD1 citations52
US7903986B2Mar 8, 2011
Reuse method and a reusable device for an image forming apparatus having a first process linear velocity and a second image processing apparatus having a second process linear velocity
RICOH CO LTD0 citations42
YOSHIDA AKIRA
4 patentsUS8811846B2Aug 19, 2014
Optical sensor with positioning reference surface and image forming apparatus incorporating optical sensor
YOSHIDA AKIRA0 citations52
US8503893B2Aug 6, 2013
Image forming apparatus and method for controlling image density
YOSHIDA AKIRA0 citations41
US8233813B2Jul 31, 2012
Image forming apparatus and image-density control method
YOSHIDA AKIRA0 citations41
US9442420B2Sep 13, 2016
Image forming apparatus and image forming method
YOSHIDA AKIRA0 citations40
ISHIBASHI HITOSHI
3 patentsUS8155543B2Apr 10, 2012
Image forming apparatus capable of reducing a lengthy duration of an adjustment control
ISHIBASHI HITOSHI10 citations83
US8095025B2Jan 10, 2012
Image forming apparatus capable of efficient toner concentration control
ISHIBASHI HITOSHI7 citations83
US8103181B2Jan 24, 2012
Image forming apparatus and method of adjusting charge bias
ISHIBASHI HITOSHI0 citations51
TANAKA KAYOKO
3 patentsUS8455851B2Jun 4, 2013
Optical sensor and image forming apparatus
TANAKA KAYOKO5 citations72
US8942586B2Jan 27, 2015
Image forming apparatus using a plurality of toner patches during a non-printing period
TANAKA KAYOKO2 citations61
US8942584B2Jan 27, 2015
Image forming apparatus and image forming method
TANAKA KAYOKO0 citations40