Toner for electrophotographic methods and process for preparing

Details Toner for electrophotographic methods and process for preparing Toner for electrophotographic methods and process for preparing

1988-03-25

1989-06-06

Goodrow, John L.

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

430111, G03G 908

Patent

active

048371076

ABSTRACT:
A toner and a method for the preparation of toner particles essentially consisting of monodisperse spherical thermoplastic particles having a coefficient of variation below 30 per cent and a mean diameter between 2 and 50 .mu.m, the particles having a shell of polymeric material in which a colorant is distributed. The particles are prepared by treating monodispersed spherical polymerized base particles with a shell-polymer and a colorant and contacted to give a uniform distribution of the additives on the base particles whereafter the shell-polymer is fused to the base particles.

REFERENCES:
patent: 3893932 (1975-07-01), Azar
patent: 4254201 (1981-03-01), Sawai et al.
patent: 4336173 (1982-06-01), Ugelstad
patent: 4459378 (1984-07-01), Ugelstad

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