Inventor
KATOH SHUNJI
JP46 patents
⚠️ This page may combine multiple inventors who share the name “KATOH SHUNJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
17 patentsUS6522855B1Feb 18, 2003
Image forming apparatus and developing apparatus preventing uneven image density
RICOH KK161 citations99
US6337957B1Jan 8, 2002
Image forming apparatus and developing device with improved self toner density control
RICOH KK191 citations99
US6198895B1Mar 6, 2001
Developing device with improved developer circulation and toner density control
RICOH KK133 citations98
US6091912AJul 18, 2000
Tower supplying device and image forming apparatus using same toner supplying device
RICOH KK104 citations96
US6859634B2Feb 22, 2005
Toner refilling device and developing device using the same for an image forming apparatus
RICOH KK65 citations95
US5950055ASep 7, 1999
Powder pump and image forming apparatus having the powder pump and method therefor
RICOH KK95 citations95
US5950062ASep 7, 1999
Toner sorting device for separating reusable toner from used toner and image forming apparatus using the same device
RICOH KK84 citations95
US6151471ANov 21, 2000
Toner supplying device, method and image forming apparatus using the same toner supplying device or method
RICOH KK69 citations94
US7599650B2Oct 6, 2009
Developer bearing member, developing device, process cartridge and image forming apparatus
RICOH KK25 citations92
US5182601AJan 26, 1993
Image forming apparatus having toner handling units which are alternatively usable as a developing device or a cleaning device
RICOH KK38 citations92
US4885223ADec 5, 1989
Method and apparatus for developing electrostatic latent image
RICOH KK35 citations92
US6097903AAug 1, 2000
Toner supplying device, toner container therefor and image forming apparatus using same toner supplying device and toner container
RICOH KK53 citations91
US4922301AMay 1, 1990
Rotary multicolor developing apparatus
RICOH KK52 citations91
US4987449AJan 22, 1991
Method of sensing a remaining amount of developer for a color image forming apparatus
RICOH KK19 citations82
US4733267AMar 22, 1988
Apparatus for developing electrostatic latent image
RICOH KK23 citations82
US5227847AJul 13, 1993
Image forming equipment with supplemental developer detecting device
RICOH KK18 citations73
US4384785AMay 24, 1983
Charge quenching apparatus for electrophotographic copying machine
RICOH KK13 citations71
RICOH CO LTD
12 patentsUS11803134B2Oct 31, 2023
Powder container
RICOH CO LTD1 citations73
US10908532B2Feb 2, 2021
Nozzle insertion member, powder container, and image forming apparatus
RICOH CO LTD1 citations73
US10670990B2Jun 2, 2020
Nozzle insertion member, powder container, and image forming apparatus
RICOH CO LTD1 citations73
US10401760B2Sep 3, 2019
Nozzle insertion member, powder container, and image forming apparatus
RICOH CO LTD1 citations73
US9348259B2May 24, 2016
Toner housing container and image forming apparatus
RICOH CO LTD3 citations73
US11543761B2Jan 3, 2023
Powder container including an opening and a shutter with a front end including a surface with lower friction
RICOH CO LTD0 citations62
US11372347B2Jun 28, 2022
Powder container
RICOH CO LTD0 citations62
US10935905B2Mar 2, 2021
Powder container
RICOH CO LTD0 citations62
US9261817B2Feb 16, 2016
Replenishing developer housing container and image forming apparatus
RICOH CO LTD2 citations62
US10809648B2Oct 20, 2020
Powder container
RICOH CO LTD0 citations52
US10534290B2Jan 14, 2020
Powder container
RICOH CO LTD0 citations52
US10088776B2Oct 2, 2018
Developing device, and image forming apparatus and process cartridge incorporating same
RICOH CO LTD0 citations42
KIKUCHI KENJI
4 patentsUS9465317B2Oct 11, 2016
Nozzle insertion member, powder container, and image forming apparatus
KIKUCHI KENJI12 citations92
US10048621B2Aug 14, 2018
Nozzle insertion member, powder container, and image forming apparatus
KIKUCHI KENJI1 citations63
US9857729B2Jan 2, 2018
Nozzle insertion member, powder container, and image forming apparatus
KIKUCHI KENJI1 citations63
US9513576B2Dec 6, 2016
Powder container
KIKUCHI KENJI2 citations62
YOSHIDA KEIICHI
3 patentsUS9057984B2Jun 16, 2015
Powder container, toner cartridge, drawer tray, and image forming apparatus
YOSHIDA KEIICHI5 citations72
US8781375B2Jul 15, 2014
Powder container, powder conveying apparatus, and image forming apparatus
YOSHIDA KEIICHI5 citations72
US8953986B2Feb 10, 2015
Powder container, powder conveying apparatus, and image forming apparatus
YOSHIDA KEIICHI0 citations40
HIROTA TETSURO
3 patentsUS9507291B2Nov 29, 2016
Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method therefor
HIROTA TETSURO2 citations62
US9170233B2Oct 27, 2015
Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method therefor
HIROTA TETSURO2 citations62
US9507290B2Nov 29, 2016
Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method therefor
HIROTA TETSURO0 citations51