Inventor
KUMASHIRO TOSHIAKI
JP4 patents
Patents
4 patentsUS5864408AJan 26, 1999
Reading device having reference white selecting function for shading correction
RICOH KK81 citations92
US5570204AOct 29, 1996
Image reader with flare prevention using light shield plates
RICOH KK61 citations92
US5691758ANov 25, 1997
Thermal recording apparatus using recording sheet made of thermal reversible material
RICOH KK6 citations72
USRE37845ESep 17, 2002
Thermal recording apparatus using recording sheet made of thermal reversible material
RICOH KK3 citations61