Inventor
KOUCHIWA TAIRA
JP16 patents
Patents
16 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
US6233081B1May 15, 2001
Optical scanning device, image forming apparatus and optical scanning method
RICOH KK62 citations96
US4753522AJun 28, 1988
Plastic lens assembly for use in copying machines
RICOH KK74 citations96
US5311364AMay 10, 1994
Reading lens for scanner
RICOH KK74 citations93
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
US6803941B2Oct 12, 2004
Image forming apparatus with overlapped light fluxes forming a dot
RICOH KK35 citations92
US4738517AApr 19, 1988
Copying lens with a wide angle of view
RICOH KK25 citations92
US4690518ASep 1, 1987
Wide angle copying lens system
RICOH KK29 citations92
US4647961AMar 3, 1987
Apparatus for reading the image information of a colored original
RICOH KK32 citations90
US7667868B2Feb 23, 2010
Optical scanning device and image forming apparatus
RICOH KK9 citations84
US7245311B2Jul 17, 2007
Image forming apparatus
RICOH KK11 citations84
US4643576AFeb 17, 1987
Fringe scanning shearing interferometer
RICOH KK18 citations72
US4859044AAug 22, 1989
Large aperture lens system for use in a copier
RICOH KK4 citations62
US4711536ADec 8, 1987
Color separating lens composed of three lens units
RICOH KK4 citations62