LIQUID DEVELOPER CONTAINING A CRUDE RUBBER AND A TONER COATED WITH TWO RESINS AND A POLARITY IMPARTING DYE

摘要

LIQUID DEVELOPER A liquid developer suitable for use in electrophotography is composed of a highly insulating carrier liquid, toner particles comprising pigment particles that are coated with resin soluble in the carrier liquid and resin insoluble in the carrier liquid and dye functioning as a polarity imparting agent, and a crude rubber that is opposite in polarity to the dye. The toner particles and the crude rubber are mixed in the carrier liquid and the degree of charge and the charge characteristics of the liquid developer can be varied by controlling the relative amounts of dye and crude rubber.