Liquid developer for use in electrostatic photography

A liquid developer comprising:

• a carrier liquid having a high electric resistivity and a low dielectric constant;
• coloring agent particles dispersed in said carrier liquid, said coloring agent particles consisting essentially of organic pigment particles substantially completely coated with a dry coating of first resin which is substantially insoluble in said carrier liquid, said coloring agent particles having an average particle diameter in the range of from 0.01 to 20 microns and having an electric resistivity of about 10.sup.8 to 10.sup.14 .OMEGA.cm;
• a resin dispersion composition dispersed in said carrier liquid, said resin dispersion composition having been prepared by mixing (a) a solution of second resin dissolved in first monomer, with (b) a non-aqueous organic liquid having a high electric resistivity and a low dielectric constant, said second resin being substantially insoluble in said non-aqueous organic liquid, said first monomer being capable of forming a first polymer which is solvated by said non-aqueous organic liquid, and then subjecting the mixture of (a) and (b) to polymerizing conditions to polymerize said first monomer to form said resin dispersion containing said first polymer, said first polymer being adsorbed to said pigment to maintain a distinct polarity of said pigment and to make same fixable to a substrate, and said second resin acting as a dispersion stabilizer.