Inventor
SAKAMAKI TOMOYUKI
JP50 patents
⚠️ This page may combine multiple inventors who share the name “SAKAMAKI TOMOYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
47 patentsUS7099609B2Aug 29, 2006
Developing device
CANON KK32 citations92
US6978108B2Dec 20, 2005
Developing apparatus to control bending of a magnetic field generation unit provided inside a developer carrying member
CANON KK30 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
US6546222B2Apr 8, 2003
Developing apparatus
CANON KK31 citations91
US8355655B2Jan 15, 2013
Development apparatus
CANON KK8 citations84
US7991332B2Aug 2, 2011
Developing apparatus having a feeding member for feeding a developer
CANON KK11 citations84
US7454149B2Nov 18, 2008
Image forming apparatus
CANON KK9 citations84
US7231154B2Jun 12, 2007
Developing apparatus
CANON KK19 citations84
US7725061B2May 25, 2010
Developing apparatus
CANON KK11 citations83
US7653336B2Jan 26, 2010
Developing apparatus featuring multiple magnetic rollers for developing a latent image multiple times
CANON KK12 citations83
US7561838B2Jul 14, 2009
Developing apparatus featuring magnetic seal members disposed in developer delivery regions
CANON KK16 citations83
US7321741B2Jan 22, 2008
Image forming apparatus featuring a transparent image forming station to achieve uniform gloss
CANON KK11 citations83
US6850722B2Feb 1, 2005
Image forming apparatus
CANON KK14 citations83
US11982954B2May 14, 2024
Developing device
CANON KK2 citations73
US9983511B2May 29, 2018
Image forming apparatus having reverse developer feeding
CANON KK3 citations73
US9442428B2Sep 13, 2016
Developing apparatus
CANON KK4 citations73
US9335666B2May 10, 2016
Developing device and image forming apparatus
CANON KK6 citations73
US7853186B2Dec 14, 2010
Developing apparatus featuring multiple magnetic rollers
CANON KK7 citations73
US11262672B2Mar 1, 2022
Developing device
CANON KK2 citations71
US10768552B2Sep 8, 2020
Developing device
CANON KK2 citations71
US12105445B2Oct 1, 2024
Developing device
CANON KK0 citations63
US11782362B2Oct 10, 2023
Developing device
CANON KK0 citations63
US9335659B2May 10, 2016
Image forming apparatus with replenishment toner container which houses toner to which external additives are added
CANON KK2 citations63
US9052634B2Jun 9, 2015
Developing apparatus
CANON KK2 citations63
US7917069B2Mar 29, 2011
Development apparatus including a first developer member made of pure aluminum or an aluminum alloy and a second developer member of stainless steel
CANON KK6 citations63
US7773900B2Aug 10, 2010
Image forming apparatus and controlling feature for deviating toner stripes transferred to an intermediate transfer medium
CANON KK5 citations63
US12504703B2Dec 23, 2025
Developing apparatus
CANON KK0 citations62
US12135510B2Nov 5, 2024
Developing apparatus
CANON KK0 citations62
US11567426B2Jan 31, 2023
Developing apparatus
CANON KK0 citations62
US11243483B2Feb 8, 2022
Developing apparatus
CANON KK0 citations62
US10386743B2Aug 20, 2019
Developing device that reduces the bending of a developer regulating member when the developer regulating member receives developer pressure or magnetic force
CANON KK1 citations62
US9223252B2Dec 29, 2015
Developing apparatus
CANON KK2 citations62
US12547102B2Feb 10, 2026
Developing apparatus
CANON KK0 citations52
US11835883B2Dec 5, 2023
Image forming apparatus capable of reducing periodic image density unevenness
CANON KK0 citations52
US11016417B2May 25, 2021
Developing apparatus
CANON KK0 citations52
US10852661B2Dec 1, 2020
Developing apparatus
CANON KK0 citations52
US10725397B2Jul 28, 2020
Developing apparatus
CANON KK0 citations52
US10401756B2Sep 3, 2019
Image forming apparatus
CANON KK0 citations52
US9760037B2Sep 12, 2017
Developing apparatus
CANON KK0 citations52
US9436130B2Sep 6, 2016
Developing device
CANON KK1 citations52
US9329523B2May 3, 2016
Developing apparatus
CANON KK1 citations52
US11556077B2Jan 17, 2023
Image formation apparatus
CANON KK0 citations51
US10018943B2Jul 10, 2018
Developing sleeve and developing device
CANON KK0 citations42
US9417561B2Aug 16, 2016
Developing device
CANON KK0 citations42
US9152078B2Oct 6, 2015
Developing apparatus
CANON KK0 citations42
US10234793B2Mar 19, 2019
Development device using a dry electrophotographic method
CANON KK0 citations40