Inventor
SENMA TOSHITAKA
JP5 patents
Patents
5 patentsUS5144337ASep 1, 1992
Image forming apparatus capable of forming an image by dots having various diameters
RICOH KK27 citations91
US4975738ADec 4, 1990
Method of forming an image on both sides of a sheet
RICOH KK25 citations91
US4926433AMay 15, 1990
Semiconductor laser unit
RICOH KK24 citations91
US5146240ASep 8, 1992
Image forming apparatus with plural dot densities
RICOH KK21 citations80
US4856008AAug 8, 1989
Semiconductor laser control apparatus
RICOH KK16 citations72