Inventor
HIRAKURA KOJI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “HIRAKURA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
15 patentsUS6400391B1Jun 4, 2002
Optical scanning lens, optical scanning device and image forming apparatus
RICOH KK132 citations99
US6744545B2Jun 1, 2004
Optical scanning lens, optical scanning device and image forming apparatus
RICOH KK37 citations96
US7072127B2Jul 4, 2006
Optical scanning lens, optical scanning device and image forming apparatus
RICOH KK17 citations92
US6870652B2Mar 22, 2005
Optical scanning lens, optical scanning device and image forming apparatus
RICOH KK21 citations92
US4268157AMay 19, 1981
Toner image transfer method and apparatus for electrostatic photography
RICOH KK28 citations82
US4487501ADec 11, 1984
Process of exposing photosensitive member
RICOH KK7 citations74
US4700659AOct 20, 1987
Developing unit of dry type
RICOH KK11 citations73
US4408863AOct 11, 1983
Transfer medium separating device
RICOH KK8 citations73
US4367032AJan 4, 1983
Electrostatic copying apparatus
RICOH KK8 citations73
US4389972AJun 28, 1983
Toner concentration control apparatus
RICOH KK17 citations72
US4266141AMay 5, 1981
Toner developing ability measuring system for electrostatography
RICOH KK17 citations72
US4242434ADec 30, 1980
Toner composition for multiple copy electrostatic photography
RICOH KK17 citations72
US4369733AJan 25, 1983
Toner concentration control apparatus
RICOH KK17 citations71
US4172722AOct 30, 1979
Electrostatic copying method for forming multiple copies
RICOH KK8 citations70
US4015984AApr 5, 1977
Inorganic photoconductor in glass binds with glass overcoat layer
RICOH KK5 citations62