Inventor
WATASE KENTA
4 patents
Patents
4 patentsUS4389972AJun 28, 1983
Toner concentration control apparatus
RICOH KK17 citations72
US4266141AMay 5, 1981
Toner developing ability measuring system for electrostatography
RICOH KK17 citations72
US4369733AJan 25, 1983
Toner concentration control apparatus
RICOH KK17 citations71
US5401549AMar 28, 1995
Optical information recording medium
RICOH KK5 citations58