Process of producing electrophotographic toners comprises ultras

Details Process of producing electrophotographic toners comprises ultras Process of producing electrophotographic toners comprises ultras

1989-09-05

1991-03-26

Welsh, David

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

20415742, 526 88, 526909, 525934, G03G 5000

Patent

active

050028472

ABSTRACT:
A toner for developing electrostatic images and a process for producing the same is disclosed. The process comprises after applying ultrasonic waves to raw materials-mixture comprising addition polymerizable monomer(s), coloring agent(s) and water as indispensable components in the course of charging the raw materials-mixture into a reaction vessel or to a raw materials-mixture in a reaction vessel, at an application amount of from 0.05 to 50 W/l/hr. per unit treating volume and time using an ultrasonic homogenizer having frequencies of from 10 kHz to 50 kHz, subjecting the raw materials-mixture to suspension polymerization.

REFERENCES:
patent: 2899414 (1959-08-01), Mertes
patent: 4017670 (1977-04-01), Spicuzza
patent: 4231919 (1980-11-01), Isaacson
patent: 4849318 (1989-07-01), Tsubota

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