Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Patent
1993-03-12
1994-09-13
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
430110, G03G 909
Patent
active
053467981
ABSTRACT:
The present invention provides a suspension polymerization method which provides polymerized particles exhibiting excellent charging properties and a toner composed of the polymerized particles obtained with the method. The method includes the steps of: placing a continuous phase component of an aqueous medium in a continuous phase vessel, and placing a dispersed phase component composed of a monomer composition and at least one solid compound having a specific structure in a dispersed phase vessel; continuously and simultaneously supplying each of the dispersed phase component and the continuous phase component to an apparatus for providing a shear force; exerting a shear force on the dispersed phase component and the continuous component to form a suspension material including polymerizable liquid-drops of a desired size; leading the suspension material to a polymerization vessel; subjecting the suspension material in the polymerization vessel to a polymerization reaction to form a polymerized material; and drying the polymerized material to obtain the polymerized particle.
REFERENCES:
patent: 4624907 (1986-11-01), Niimura et al.
EPO Search Report dated Jul. 20, 1993.
Kamiyama Masafumi
Maeda Masahiro
Matsushita Toshiya
Sano Akihiro
Totsuka Hiroki
Goodrow John
Tomoegawa Paper Co. Ltd.
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