Patent ID: 6140003
Filing Date: 2000-10-31
Classification: G03G

Abstract:
A toner composition consisting essentially of resin particles, pigment and a charge enhancing additive comprised of a polyester polymer with a charge enhancing moiety chemically attached thereto, and which charge enhancing additive is selected from the group consisting of poly(1,2-propylene-sodio 5-sulfoisophthalate), poly(1,2-propylene-calcio 5-sulfoisophthalate), poly(1,2-propylene-tetralkylammonium 5-sulfoisophthalate), poly(ethylene-sodio 5-sulfoisophthalate), poly(ethylene-calcio 5-sulfoisophthalate), poly(ethylene-dimethyldistearylammonio 5-sulfoisophthalate), copoly(1,2-propylene-diethylene sodio-5-sulfoisophthalate), copoly(1,2-propylene-diethylene calcio-5-sulfoisophthalate), (and copoly(1,2-propylene-diethylene dimethyldistearylammonio-5-sulfoisophthalate).