Inventor
ARIIZUMI OSAMU
JP40 patents
⚠️ This page may combine multiple inventors who share the name “ARIIZUMI OSAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
20 patentsUS10152000B2Dec 11, 2018
Developing device
CANON KK2 citations73
US9170527B2Oct 27, 2015
Image forming apparatus having developer replenishment control
CANON KK5 citations73
US11556081B2Jan 17, 2023
Developing device
CANON KK2 citations72
US10642192B2May 5, 2020
Developing device having a feeding screw with multiple blade portions
CANON KK6 citations70
US9268263B2Feb 23, 2016
Development apparatus and image forming apparatus
CANON KK4 citations70
US7646996B2Jan 12, 2010
Image forming apparatus and control method thereof
CANON KK2 citations63
US11852989B2Dec 26, 2023
Developing device
CANON KK1 citations62
US10908535B2Feb 2, 2021
Method for fixing regulating blade, developing device, developer bearing member, and magnet
CANON KK0 citations62
US10895826B2Jan 19, 2021
Conveyance screw and developing apparatus
CANON KK1 citations62
US12353145B2Jul 8, 2025
Developing device
CANON KK0 citations52
US10955768B2Mar 23, 2021
Developing apparatus and conveyance screw
CANON KK0 citations52
US10126683B2Nov 13, 2018
Developing apparatus
CANON KK1 citations52
US8346110B2Jan 1, 2013
Image forming apparatus
CANON KK0 citations52
US11556077B2Jan 17, 2023
Image formation apparatus
CANON KK0 citations51
US11846892B2Dec 19, 2023
Developing device
CANON KK0 citations50
US10146157B2Dec 4, 2018
Development apparatus having a multiple screw portion conveyance screw
CANON KK0 citations42
US10054872B2Aug 21, 2018
Image forming apparatus having removable developing units
CANON KK0 citations42
US10877401B2Dec 29, 2020
Feeding screw and developing device
CANON KK0 citations41
US10545432B2Jan 28, 2020
Feeding screw and developing device
CANON KK0 citations41
US9804523B2Oct 31, 2017
Image forming apparatus
CANON KK0 citations41
RICOH KK
15 patentsUS6721516B2Apr 13, 2004
Image forming apparatus
RICOH KK85 citations98
US6597885B2Jul 22, 2003
Image forming apparatus having a developing device with a magnet brush
RICOH KK45 citations96
US6442364B2Aug 27, 2002
Image forming apparatus having a developer carrier capable of preventing toner adhesion
RICOH KK72 citations96
US6901233B2May 31, 2005
Image forming apparatus
RICOH KK23 citations93
US7616909B2Nov 10, 2009
Image forming apparatus and image forming method
RICOH KK21 citations92
US7315711B2Jan 1, 2008
Image forming apparatus, process cartridge and cleaningless system
RICOH KK25 citations92
US7218879B2May 15, 2007
Image forming apparatus controlling polarity of residual toner and process cartridge for use in the same
RICOH KK39 citations92
US7020421B2Mar 28, 2006
Magnetic carrier, two-component developer, development method, development device and image forming apparatus of electrophotography
RICOH KK16 citations92
US6778805B2Aug 17, 2004
Image forming apparatus having a developing device with a magnet brush
RICOH KK34 citations92
US7548704B2Jun 16, 2009
Image forming apparatus effectively conducting a process control
RICOH KK8 citations84
US7493058B2Feb 17, 2009
Image forming apparatus and toner concentration controlling method
RICOH KK13 citations84
US7672602B2Mar 2, 2010
Developing unit and image forming apparatus which forces consumption of toner
RICOH KK7 citations74
US6728504B2Apr 27, 2004
Developing device using a magnet brush and image forming apparatus including the same
RICOH KK11 citations74
US7821677B2Oct 26, 2010
Method and apparatus for image forming capable of accurately detecting displacement of transfer images and image density
RICOH KK7 citations73
US7499664B2Mar 3, 2009
Image processing apparatus, process cartridge, and cleaning system with residual toner retaining unit
RICOH KK5 citations63
RICOH CO LTD
3 patentsUS8009997B2Aug 30, 2011
Toner replenishment determination device of an image forming apparatus
RICOH CO LTD2 citations63
US7885556B2Feb 8, 2011
Image forming apparatus for correcting a toner density target value
RICOH CO LTD1 citations52
US7840152B2Nov 23, 2010
Image forming apparatus, process cartridge, cleaning system, and image forming apparatus with cleaning system
RICOH CO LTD1 citations52