Inventor

KAWABATA TOSHIYASU

JP3 patents

Patents

3 patents

US4931374AJun 5, 1990

Electrophotographic positive charging toner containing a copper phthalocyanine blue pigment

RICOH KK19 citations81

US4554233ANov 19, 1985

Electrophotographic toner containing triazolium compound as charge controlling agent

RICOH KK6 citations72

US4401740AAug 30, 1983

Electrographic development process

RICOH KK14 citations71