Inventor
HIROBE FUMITAKE
JP27 patents
⚠️ This page may combine multiple inventors who share the name “HIROBE FUMITAKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
25 patentsUS6442355B2Aug 27, 2002
Developer density controlling apparatus including target density information detection and toner image density detection
CANON KK26 citations93
US7099609B2Aug 29, 2006
Developing device
CANON KK32 citations92
US6975825B2Dec 13, 2005
Developing apparatus including first and second magnets with poles arranged to supply developer without contamination
CANON KK27 citations92
US6973281B2Dec 6, 2005
Developing apparatus with two developing chamber-rotatable member pairs
CANON KK40 citations92
US6459862B1Oct 1, 2002
Developing apparatus
CANON KK22 citations92
US5819132AOct 6, 1998
Image forming apparatus capable of toner replenishment based on density of reference toner image and toner replenishment based on ratio of toner to carrier
CANON KK24 citations92
US7881638B2Feb 1, 2011
Developing apparatus
CANON KK19 citations84
US7386261B2Jun 10, 2008
Image forming apparatus having movable developing devices and developer replenishment device
CANON KK16 citations84
US7362989B2Apr 22, 2008
Developing apparatus for image forming apparatus
CANON KK12 citations84
US7277649B2Oct 2, 2007
Developing apparatus and image forming method
CANON KK14 citations84
US7218870B2May 15, 2007
Image forming apparatus
CANON KK12 citations84
US7054583B2May 30, 2006
Developing device including two developer carrying members
CANON KK14 citations84
US8385754B2Feb 26, 2013
Image forming apparatus featuring forced discharging of excessive developer
CANON KK11 citations83
US7231168B2Jun 12, 2007
Image forming apparatus
CANON KK9 citations74
US7054584B2May 30, 2006
Developing apparatus with first and second developing bearing members each including a magnetic field generator wherein a peak position magnetic force of the second developing members is a defined value
CANON KK8 citations74
US6993274B2Jan 31, 2006
Developing apparatus with plural developer bearing members for each image bearing member
CANON KK8 citations74
US6665502B2Dec 16, 2003
Image forming apparatus with electrostatic potential-based developer correction
CANON KK8 citations74
US7263318B2Aug 28, 2007
Image forming apparatus including an index feature for extending the life of a photosensitive member
CANON KK8 citations73
US9042757B2May 26, 2015
Image forming apparatus
CANON KK3 citations63
US6856773B2Feb 15, 2005
Image forming apparatus with electrostatic potential-based developer correction
CANON KK4 citations63
US7826772B2Nov 2, 2010
Image forming apparatus using color toner and transparent toner
CANON KK3 citations62
US7630670B2Dec 8, 2009
Developing apparatus and image forming apparatus
CANON KK5 citations62
US8768188B2Jul 1, 2014
Image forming apparatus
CANON KK0 citations52
US7596345B2Sep 29, 2009
Image forming apparatus with a developer comprising at least a toner and a first external additive
CANON KK1 citations52
US9052636B2Jun 9, 2015
Image forming apparatus
CANON KK0 citations42