Inventor
YAMANAKA HIDEYASU
JP6 patents
Patents
6 patentsUS5997153ADec 7, 1999
Light source device for an image forming apparatus
RICOH KK33 citations94
US5758950AJun 2, 1998
Light source device for an image forming apparatus
RICOH KK47 citations94
US6502960B2Jan 7, 2003
Light source device for an image forming apparatus
RICOH KK14 citations91
US6179445B1Jan 30, 2001
Light source device for an image forming apparatus
RICOH KK15 citations91
US6299331B1Oct 9, 2001
Light source device for an image forming apparatus
RICOH KK9 citations72
US4339702AJul 13, 1982
Stepping motor drive apparatus
RICOH KK2 citations61