Method of using electrostatographic toner composition with surfactant

Claim 2

An electrostatographic imaging process comprising the steps of providing an electrostatographic imaging member having a recording surface, forming an electrostatic latent image on said recording surface, and contacting said electrostatic latent image with a developer mixture comprising finely-divided toner particles electrostatically clinging to the surface of carrier particles having an average particle diameter of between about 50 microns and about 1,000 microns, said toner particles comprising a colorant, a thermoplastic resin, and a surface active additive dispersed in said toner particles, said surface active additive being capable of providing a positive triboelectric charging potential to said toner particles, said surface active additive being selected from highly fluorinated materials having an ionic group, said ionic group being selected from a cationic group and an anionic group, whereby at least a portion of said finely-divided toner particles is attracted to and deposited on said recording surface in conformance with said electrostatic latent image.

Claim 3

An electrostatographic imaging process in accordance with claim 1 wherein said highly fluorinated materials comprise fluorinated surfactants.

Claim 4

An electrostatographic imaging process in accordance with claim 1 wherein said fluorinated surfactants comprise anionic surfactants.

Claim 5

An electrostatographic imaging process in accordance with claim 1 wherein said fluorinated surfactants comprise cationic surfactants.

Claim 6

An electrostatographic imaging process in accordance with claim 1 wherein said surface active additive resides in subsurface layers of said toner particles.

Claim 7

An electrostatographic imaging process in accordance with claim 1 wherein said toner particles have an average particle size of less than about 30 microns.

Claim 8

An electrostatographic imaging process in accordance with claim 1 wherein said surface active additive is present in an amount of from about 0.001 percent to about 0.5 percent by weight based on the weight of said toner particles.

Claim 9

An electrostatographic imaging process in accordance with claim 1 wherein said colorant, said thermoplastic resin, and said surface active additive have been thoroughly mixed to yield a uniform mixture and then spray-dried to form said finely-divided toner particles.

Claim 10

An electrostatographic imaging process comprising the steps of providing an electrostatographic imaging member having a recording surface, forming an electrostatic latent image on said recording surface, and contacting said electrostatic latent image with a developer mixture comprising finely-divided toner particles electrostatically clinging to the surface of carrier particles having an average particle diameter of between about 50 microns and about 1,000 microns, said toner particles comprising a colorant, a thermoplastic resin, and a surface active additive dispersed in said toner particles, said surface active additive being capable of providing a positive triboelectric charging potential to said toner particles, said surface active additive being selected from highly fluorinated materials having an ionic group, said ionic group being selected from a cationic group and an anionic group, said toner particles having been prepared by dissolving said thermoplastic resin and thoroughly mixing said colorant, said thermoplastic resin and said surface active additive to yield a uniform mixture which is then spray-dried to form said finely-divided toner particles, whereby at least a portion of said finely-divided toner particles is attracted to and deposited on said recording surface in conformance with said electrostatic latent image.

Claim 11

An electrostatographic imaging process comprising the steps of providing an electrostatographic imaging member having a recording surface, forming an electrostatic latent image on said recording surface, and contacting said electrostatic latent image with a developer mixture comprising finely-divided toner particles electrostatically clinging to the surface of carrier particles having an average particle diameter of between about 50 microns and about 1,000 microns, said toner particles comprising a colorant, a thermoplastic resin, and a surface active additive dispersed in said toner particles, said surface active additive being capable of providing a positive triboelectric charging potential to said toner particles, said surface active additive being selected from highly fluorinated materials having an ionic group, said ionic group being selected from a cationic group and an anionic group, said toner particles having been prepared by dissolving said thermoplastic resin and thoroughly mixing said colorant, said thermoplastic resin and said surface active additive to yield a uniform mixture which is then spray-dried to form said finely-divided toner particles, whereby at least a portion of said finely-divided toner particles is attracted to and deposited on said recording surface in conformance with said electrostatic latent image.

Claim 12

An electrostatographic imaging process comprising the steps of providing an electrostatographic imaging member having a recording surface, forming an electrostatic latent image on said recording surface, and contacting said electrostatic latent image with a developer mixture comprising finely-divided toner particles electrostatically clinging to the surface of carrier particles having an average particle diameter of between about 50 microns and about 1,000 microns, said toner particles comprising a colorant, a thermoplastic resin, and a surface active additive dispersed in said toner particles, said surface active additive being capable of providing a positive triboelectric charging potential to said toner particles, said surface active additive being selected from monomers and polymers containing ionic groups consisting of tetraheptyl ammonium bromide, neutralized acrylic acid, and vinyl pyridine, whereby at least a portion of said finely-divided toner particles is attracted to and deposited on said recording surface in conformance with said electrostatic latent image.

Claim 13

An electrostatographic imaging process comprising the steps of providing an electrostatographic imaging member having a recording surface, forming an electrostatic latent image on said recording surface, and contacting said electrostatic latent image with a developer mixture comprising finely-divided toner particles electrostatically clinging to the surface of carrier particles having an average particle diameter of between about 50 microns and about 1,000 microns, said toner particles comprising a colorant, a thermoplastic resin, and a surface active additive dispersed in said toner particles, said surface active additive being capable of providing a positive triboelectric charging potential to said toner particles, said surface active additive being selected from monomers and polymers containing ionic groups consisting of tetraheptyl ammonium bromide, neutralized acrylic acid, and vinyl pyridine, whereby at least a portion of said finely-divided toner particles is attracted to and deposited on said recording surface in conformance with said electrostatic latent image.