Inventor
TOYOHARA YUICHIRO
JP26 patents
⚠️ This page may combine multiple inventors who share the name “TOYOHARA YUICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
24 patentsUS6819902B2Nov 16, 2004
Image forming apparatus with interchangeable developing devices
CANON KK24 citations92
US6463226B2Oct 8, 2002
Image forming apparatus which corrects image forming conditions in low-temperature environment and at continuous image formation
CANON KK19 citations92
US6049681AApr 11, 2000
Image forming apparatus
CANON KK21 citations92
US5987275ANov 16, 1999
Fixing apparatus with power control based on temperature gradient
CANON KK25 citations92
US5671462ASep 23, 1997
Fixing device having a power supply control element for controlling a temperature of a heat member
CANON KK40 citations92
US6591072B2Jul 8, 2003
Image forming apparatus with changeable toner returning electric field application period
CANON KK24 citations91
US7110686B2Sep 19, 2006
Image forming apparatus capable of changing usage ratio among multiple toners
CANON KK13 citations84
US6389240B2May 14, 2002
Image forming apparatus having plural image processing speeds and plural image correction characteristics
CANON KK16 citations84
US6785480B2Aug 31, 2004
Image forming apparatus having a plurality of image forming speeds
CANON KK15 citations81
US7945178B2May 17, 2011
Image forming apparatus including density control and control method thereof
CANON KK6 citations74
US7340190B2Mar 4, 2008
Image forming apparatus
CANON KK8 citations74
US7113729B2Sep 26, 2006
Image forming apparatus capable of accomplishing uniformity in glossiness
CANON KK10 citations74
US6393229B1May 21, 2002
Image forming apparatus
CANON KK8 citations74
US6091512AJul 18, 2000
Image processing apparatus and method for improving image reproducibility
CANON KK13 citations74
US6226108B1May 1, 2001
Image processing apparatus and method for reproducing high quality image in low-density portion
CANON KK7 citations73
US7522852B2Apr 21, 2009
Image forming apparatus capable of accomplishing uniformity in glossiness
CANON KK3 citations63
US7120368B2Oct 10, 2006
Image forming apparatus using two or more toners for ordinary paper or OHP sheet
CANON KK6 citations63
US7826772B2Nov 2, 2010
Image forming apparatus using color toner and transparent toner
CANON KK3 citations62
US6646670B2Nov 11, 2003
Image forming apparatus and manufacturing method thereof
CANON KK3 citations62
US6559876B2May 6, 2003
Image forming apparatus with exposure reduction mode
CANON KK3 citations62
US6501492B1Dec 31, 2002
Image forming apparatus for outputting image in response to digital image signal
CANON KK2 citations62
US5726759AMar 10, 1998
Image forming apparatus
CANON KK5 citations61
US7596345B2Sep 29, 2009
Image forming apparatus with a developer comprising at least a toner and a first external additive
CANON KK1 citations52
US7324765B2Jan 29, 2008
Image forming apparatus
CANON KK0 citations52
TOYOHARA YUICHIRO
2 patentsUS8218990B2Jul 10, 2012
Image formation system, image formation method, and image quality improvement method twice heating and pressing a toner image on a recording material
TOYOHARA YUICHIRO4 citations58
US8126343B2Feb 28, 2012
Image forming apparatus including density control and control method thereof
TOYOHARA YUICHIRO0 citations48