TONER COMPOSITION INCLUDING CARBON BLACK AND A COPOLYMER OF VINYL CHLORIDE AND ETHYL, PROPYL OR BUTYL MALEATE

摘要

An electrostatographic toner composition comprising a colorant and a copolymer of from about 65 mol percent to about 75 mol percent vinyl chloride and from about 25 mol percent to about 35 mol percent of a lower alkyl maleate or fumarate, the copolymer having a number average molecular weight of from about 15,000 to about 25,000 and a weight average molecular weight of from about 45,000 to about 55,000.