Inventor
MATSUKAWA AKIHISA
JP20 patents
⚠️ This page may combine multiple inventors who share the name “MATSUKAWA AKIHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
19 patentsUS9971298B2May 15, 2018
Image forming apparatus, process cartridge, developing cartridge, and drum cartridge
CANON KK7 citations82
US9904202B2Feb 27, 2018
Image forming apparatus having potential difference control
CANON KK2 citations72
US9465322B2Oct 11, 2016
Cartridge and image forming apparatus
CANON KK3 citations72
US9442454B2Sep 13, 2016
Image forming apparatus having an image bearing member charged with predetermined polarity and potential
CANON KK3 citations72
US10209668B2Feb 19, 2019
Image forming apparatus, process cartridge, developing cartridge, and drum cartridge
CANON KK4 citations71
US9835973B2Dec 5, 2017
Image forming apparatus having cleaner-less developer system
CANON KK2 citations71
US12485414B2Dec 2, 2025
Microchannel device
CANON KK0 citations62
US11970390B2Apr 30, 2024
Method for producing microchannel device
CANON KK0 citations62
US11829087B2Nov 28, 2023
Image forming apparatus with image bearing members having different surface layer thicknesses
CANON KK0 citations62
US11526103B2Dec 13, 2022
Image forming apparatus capable of suppressing image defect due to foreign matter
CANON KK0 citations62
US9239546B2Jan 19, 2016
Developing unit and process cartridge
CANON KK0 citations52
US12147170B2Nov 19, 2024
Image forming apparatus having toner charging
CANON KK0 citations51
US9727002B2Aug 8, 2017
Image forming apparatus having an image bearing member charged with predetermined polarity and potential
CANON KK1 citations51
US9429868B2Aug 30, 2016
Image forming apparatus
CANON KK1 citations51
US12547096B2Feb 10, 2026
Developing apparatus, process cartridge, and image-forming apparatus
CANON KK0 citations50
US9977368B2May 22, 2018
Developing apparatus, process cartridge, and image forming apparatus
CANON KK1 citations50
US12346037B2Jul 1, 2025
Image forming apparatus
CANON KK0 citations44
US10620568B2Apr 14, 2020
Developing device having magnetic field generating members, image forming apparatus and cartridge
CANON KK0 citations41
US9910405B2Mar 6, 2018
Developing device, process cartridge, and image forming apparatus
CANON KK0 citations41