Inventor
OKUBO KAZUHIRO
JP24 patents
⚠️ This page may combine multiple inventors who share the name “OKUBO KAZUHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
22 patentsUS6928253B2Aug 9, 2005
Image forming apparatus including toner charging member
CANON KK18 citations92
US6963707B2Nov 8, 2005
Image forming apparatus including first and second auxiliary residual developer charging features
CANON KK14 citations84
US6922539B2Jul 26, 2005
Process cartridge and image forming apparatus in which the contact width of a developer charger with an image bearing member is greater than or equal to the sum of the developing width of developing means and the width of movement of the developer charger
CANON KK18 citations84
US6807384B2Oct 19, 2004
Image forming apparatus
CANON KK19 citations84
US7580654B2Aug 25, 2009
Image forming apparatus featuring discharge prevention in a transfer separation area
CANON KK11 citations83
US7149437B2Dec 12, 2006
Image forming apparatus, and control system, cartridge and memory medium for the same apparatus
CANON KK19 citations83
US7120376B2Oct 10, 2006
Image forming apparatus featuring a four-step image bearing member controller
CANON KK17 citations83
US7286788B2Oct 23, 2007
Image forming apparatus
CANON KK7 citations74
US7058338B2Jun 6, 2006
Image forming apparatus with reciprocating dispersing feature
CANON KK10 citations74
US10921728B2Feb 16, 2021
Image forming apparatus
CANON KK2 citations73
US10866533B2Dec 15, 2020
Image forming apparatus
CANON KK2 citations73
US10712698B2Jul 14, 2020
Image forming apparatus
CANON KK2 citations73
US10078291B2Sep 18, 2018
Developing apparatus having a projecting regulating member and process cartridge
CANON KK4 citations72
US10295926B2May 21, 2019
Image forming apparatus
CANON KK1 citations62
US8718499B2May 6, 2014
Image forming apparatus
CANON KK1 citations52
US10429766B2Oct 1, 2019
Developing apparatus having a large capacity toner storage chamber, and image forming apparatus
CANON KK0 citations51
US9996026B2Jun 12, 2018
Developing apparatus having a large capacity toner storage chamber, and image forming apparatus
CANON KK0 citations51
US10571823B2Feb 25, 2020
Image forming apparatus having recovery of toner by developing member, control of charging voltage and charging member cleaning operation
CANON KK0 citations42
US10558138B2Feb 11, 2020
Image forming apparatus
CANON KK0 citations42
US10539906B2Jan 21, 2020
Image forming apparatus to acquire image bearing member surface potentials
CANON KK0 citations42
US10254694B2Apr 9, 2019
Image forming apparatus
CANON KK0 citations42
US9268251B2Feb 23, 2016
Image forming apparatus
CANON KK0 citations41