Inventor
MIYAGAWA NOBORU
JP13 patents
Patents
13 patentsUS9274442B2Mar 1, 2016
Electrophotographic image forming apparatus having charge transport layer with matrix-domain structure and charging member having concavity and protrusion
CANON KK31 citations94
US10025216B2Jul 17, 2018
Charging member with electro-conductive elastic layer having exposed bowl-shaped resin particles, process cartridge and electrophotographic apparatus
CANON KK8 citations84
US9158213B2Oct 13, 2015
Charging member, process cartridge and electrophotographic apparatus
CANON KK11 citations84
US9599914B2Mar 21, 2017
Electrophotographic member having bow-shaped resin particles defining concavity and protrusion at surface thereof
CANON KK12 citations83
US9274496B2Mar 1, 2016
Electrophotographic process cartridge and electrophotographic apparatus
CANON KK12 citations83
US9098006B2Aug 4, 2015
Roller member for electrophotography, process cartridge and electrophotographic apparatus
CANON KK13 citations83
US11320756B2May 3, 2022
Electrophotographic apparatus, process cartridge, and cartridge set
CANON KK5 citations73
US9335650B2May 10, 2016
Image forming apparatus and process cartridge utilizing a porous charging member
CANON KK3 citations73
US9291936B2Mar 22, 2016
Image-forming apparatus with electro-conductive resin layer having resin particles and process cartridge
CANON KK5 citations73
US9678452B2Jun 13, 2017
Roller for electrophotography, process cartridge, and image-forming apparatus
CANON KK4 citations72
US9632446B2Apr 25, 2017
Charging member, process cartridge, and electrophotographic image forming apparatus
CANON KK5 citations72
US10585370B2Mar 10, 2020
Charging member, process cartridge, and electrophotographic image forming apparatus
CANON KK1 citations62
US9304429B2Apr 5, 2016
Charging member, process cartridge, and electrophotographic apparatus
CANON KK2 citations62