Processes for the preparation of liquid developers with low vapo

Details Processes for the preparation of liquid developers with low vapo Processes for the preparation of liquid developers with low vapo

1987-11-23

1989-01-10

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

430115, G03G 912

Patent

active

047973420

ABSTRACT:
A process for the preparation of liquid developer compositions which comprises mixing a resin with a low vapor pressure oil at elevated temperatures permitting the resin to melt and enabling the formation of a resin oil mixture; thereafter adding to the oil resin mixture at elevated temperatures pigment particles, and stirring until the pigment has become dispersed in the resin; followed by attriting the mixture while cooling, for example, to ambient temperatures; thereafter filtering the aforementioned mixture, and dispersing the product in a low viscosity oil; and subsequently adding to the formed mixture a charge control additive.

REFERENCES:
patent: 3954640 (1976-05-01), Lu et al.
patent: 4024292 (1977-05-01), Lu et al.
patent: 4268597 (1981-05-01), Klavan et al.
patent: 4454215 (1984-06-01), Landa

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