Inventor
ISHIZUKA DAISUKE
JP46 patents
⚠️ This page may combine multiple inventors who share the name “ISHIZUKA DAISUKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI XEROX CO LTD
16 patentsUS6577837B2Jun 10, 2003
Image forming method and image forming apparatus
FUJI XEROX CO LTD23 citations92
US7001701B2Feb 21, 2006
Color toner, electrostatic latent image developer, image forming method, and image producing device
FUJI XEROX CO LTD12 citations84
US6846603B2Jan 25, 2005
Color toner, electrostatic latent image developer, image forming method, and image producing device
FUJI XEROX CO LTD7 citations74
US6528220B2Mar 4, 2003
Electrophotogaphic color toner, electrophotographic developer, and image-forming process
FUJI XEROX CO LTD7 citations74
US10520841B2Dec 31, 2019
Electrostatic image developing toner, electrostatic latent image developer, and toner cartridge
FUJI XEROX CO LTD2 citations71
US6420080B1Jul 16, 2002
Process for forming image
FUJI XEROX CO LTD6 citations63
US7138215B2Nov 21, 2006
Process cartridge, image forming apparatus and image forming method
FUJI XEROX CO LTD3 citations62
US8383308B2Feb 26, 2013
Positively chargeable two-component developer, image forming method, and image forming apparatus
FUJI XEROX CO LTD0 citations52
US7977022B2Jul 12, 2011
Developer, process cartridge, and image forming apparatus
FUJI XEROX CO LTD1 citations51
US10578989B2Mar 3, 2020
Electrostatic charge image developer, developer cartridge, and process cartridge
FUJI XEROX CO LTD0 citations50
US10466605B2Nov 5, 2019
Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
FUJI XEROX CO LTD0 citations50
US9575428B2Feb 21, 2017
Electrostatic-image developing toner, electrostatic image developer, and toner cartridge
FUJI XEROX CO LTD0 citations50
US9612542B2Apr 4, 2017
Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
FUJI XEROX CO LTD0 citations49
US9482972B2Nov 1, 2016
Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
FUJI XEROX CO LTD0 citations49
US10935900B2Mar 2, 2021
Toner for developing electrostatic charge image, electrostatic charge image developer, and toner cartridge
FUJI XEROX CO LTD0 citations47
US9715185B2Jul 25, 2017
Electrostatic-image developing toner, electrostatic-image developer, and toner cartridge
FUJI XEROX CO LTD0 citations39
BROTHER IND LTD
11 patentsUS12429800B2Sep 30, 2025
Image forming apparatus with fixing device having lever and fixed handle
BROTHER IND LTD2 citations73
US12111605B2Oct 8, 2024
Image forming apparatus with movable joint cam, and rotator
BROTHER IND LTD2 citations73
US12572109B2Mar 10, 2026
Image forming apparatus having movable joint cam with openings
BROTHER IND LTD0 citations62
US12298701B2May 13, 2025
Image forming apparatus
BROTHER IND LTD0 citations62
US11635726B2Apr 25, 2023
Image forming apparatus
BROTHER IND LTD0 citations62
US11003128B2May 11, 2021
Image forming apparatus
BROTHER IND LTD0 citations62
US11860563B2Jan 2, 2024
Image forming apparatus configured to control conveying speed of sheet in accordance with ambient temperature after paper jam is resolved
BROTHER IND LTD0 citations52
US11334021B2May 17, 2022
Image forming apparatus with a gear train for developing rollers and a gear train for photosensitive drums
BROTHER IND LTD0 citations52
US12529983B2Jan 20, 2026
Image forming apparatus including main body casing, fixing device attachable thereto, and spring configured to press boss of fixing device in attached state to main body casing
BROTHER IND LTD0 citations51
US10416597B2Sep 17, 2019
Image forming apparatus with a fan operable under noise-reducible control
BROTHER IND LTD0 citations41
US9207564B2Dec 8, 2015
Image forming apparatus
BROTHER IND LTD0 citations40
CANON KK
8 patentsUS6000894ADec 14, 1999
Bookbinding apparatus
CANON KK79 citations96
US5592280AJan 7, 1997
Sheet binding apparatus capable of performing two kinds of binding processes
CANON KK55 citations95
US6094510AJul 25, 2000
Image processing apparatus and method for predicting a compression rate of image data processed to modify an image
CANON KK52 citations92
US7852525B2Dec 14, 2010
Surface illumination unit and transparent original reading apparatus
CANON KK13 citations82
US6784410B2Aug 31, 2004
Image input system, image input apparatus, image input method, program, and storage medium
CANON KK9 citations74
US6492782B2Dec 10, 2002
Image input apparatus, image input system, light source control method, and storage medium
CANON KK9 citations74
US5899649AMay 4, 1999
Book-binding apparatus and image forming apparatus
CANON KK16 citations73
US7554704B2Jun 30, 2009
Image scanning apparatus having a scanning position adjustment capability
CANON KK4 citations63
FUJIFILM BUSINESS INNOVATION CORP
7 patentsUS12372891B2Jul 29, 2025
Toner for developing electrostatic charge image and electrostatic charge image developer
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US12259683B2Mar 25, 2025
Toner for developing electrostatic charge image and electrostatic charge image developer
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US12523944B2Jan 13, 2026
Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations61
US12454584B2Oct 28, 2025
Method of producing resin particles and method of producing electrostatic charge image developing toner
FUJIFILM BUSINESS INNOVATION CORP0 citations61
US12298711B2May 13, 2025
Toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus
FUJIFILM BUSINESS INNOVATION CORP0 citations61
US12105470B2Oct 1, 2024
Toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations61
US12487538B2Dec 2, 2025
Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations50
ISHIZUKA DAISUKE
2 patentsUS8728697B2May 20, 2014
Carrier for electrostatic image developer, electrostatic image developer, toner cartridge, process cartridge, and image forming apparatus
ISHIZUKA DAISUKE1 citations47
US8597865B2Dec 3, 2013
Electrostatic-image-developing toner, electrostatic image developer, image forming apparatus, and image forming method
ISHIZUKA DAISUKE0 citations47