Compositions of the turn solid for the powders is developing

摘要

Developer powders are disclosed which use a resinous binder comprising a combination of thermoplastic resins based on a copolymer comprising a styrene and an acrylate or methacrylate selected from the group including butyl, isobutyl, ethyl, propyl and isopropyl, which copolymer is combined with vinyltoluene-butadiene. These developer powders have a melt index of 20 to 30, a melting point of 75°-100° C and a dielectric constant of 4 to 5.