Preparation of electrostatographic toner material

Details Preparation of electrostatographic toner material Preparation of electrostatographic toner material

1982-12-23

1984-10-09

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Process of making developer composition

430110, 427212, 427214, 427221, 427222, G03G 908, G03G 910

Patent

active

044762127

ABSTRACT:
In a process for the preparation of an electrostatographic toner material suitably employable for pressure fixing process, comprising encapsulating a core material containing colorant with a shell material selected from the group consisting of a melamine resin and a urea resin in an aqueous medium to prepare encapsulated toner particles and spray-drying the so prepared toner particles, the improvement in which the spray-drying of the toner particles is carried out in the presence of a cationic compound selected from the group consisting of a cationic surface active agent and a cationic polymer.

REFERENCES:
patent: 4139483 (1979-02-01), Williams et al.
Khanna, "Surfactant-Free Emulsion Polymerization Process", Res. Discl., Jul. 1977, p. 56.

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