Patent ID: 6255363
Filing Date: 2001-07-03
Classification: C08F,C09D,G03G,Y10S

Abstract:
An electrophotographic or electrographic liquid color toner comprising:(a) a carrier liqud having a Kauri-butanol number less than 30;(b) at least one pigment;(c) a charge director; and(d) a gel organosol comprising a (co)polymeric steric stabilizer having a weight average molecular weight between 50,000 and 750,000 Daltons and a polydispersity less than 15 covalently bonded to a thermoplastic (co)polymeric core insoluble in said carrier liquid and said core having a glass transition temperature between 25.degree. C. and -10.degree. C.,wherein the weight ratio of said (co)polymeric steric stabilizer to said thermoplastic (co)polymeric core is between 1/1 and 1/15, and said (co)polymeric steric stabilizer comprises polymerizable organic compounds or mixture of polymerizable organic compounds having an absolute Hildebrand solubility parameter difference between said polymerizable organic compounds or said mixture of polymerizable organic compounds and said carrier liquid between 2.5 and 3.0 MPa.sup.1/2.