Toner processes
AssigneeXerox Corporation
InventorsGuerino G. Sacripante, Grazyna E. Kmiecik-Lawrynowicz
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Abstract
A process for the preparation of toner compositions which comprises generating an aqueous dispersion of toner fines, ionic surfactant and nonionic surfactant, adding thereto a counterionic surfactant with a polarity opposite to that of said ionic surfactant, homogenizing and stirring said mixture, and heating to provide for coalescence of said toner fine particles.
Claims29
A process for the preparation of a toner composition which comprises dispersing toner fine particles having a volume average diameter of from about 1 to about 15 microns and comprising polymer resin and pigment in an aqueous solution containing ionic surfactant and nonionic surfactant to form a mixture, adding thereto a counterionic surfactant with a polarity opposite to that of said ionic surfactant, homogenizing and stirring said mixture, and heating to provide coalescence of said toner fine particles, and whereby said toner is formed.
A process for utilizing discarded toner fine particles consisting essentially of dispersing said toner fine particles having a volume average diameter of from about 1 to about 15 microns and comprising polymer resin and pigment in an aqueous solution containing ionic surfactant and nonionic surfactant;
- adding thereto a counterionic surfactant with a polarity opposite that of said ionic surfactant to form a mixture;
- homogenizing and stirring said mixture, and heating to provide for coalescence of said toner fine particles;
- and whereby a toner is formed.
Dependencies are inferred from the claim text.