P

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 patents
US10152000B2Dec 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 patents
US6721516B2Apr 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 patents

ISHIBASHI HITOSHI

1 patent

ARIIZUMI OSAMU

1 patent