Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Patent
1988-12-16
1989-08-29
Goodrow, John L.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
430108, G03G 910
Patent
active
048616940
ABSTRACT:
A process for producing carriers for a developer is disclosed, which comprises mixing and heating a carrier material containing a binder resin and a magnetic powder, and essentially free of solvent, to obtain a molten dispersion of the magnetic powder in the binder resin; spraying the molten dispersion into liquid droplets; and cooling the droplets to solidify the droplets into carrier particles. The process eliminates the use of solvents and produces carrier particles of superior toughness, surface smoothness, and sphericality.
REFERENCES:
patent: 4265992 (1981-05-01), Kouchi et al.
patent: 4526851 (1985-07-01), Boughton et al.
Aoki Takayoshi
Honjo Toshio
Itoh Kazuhiro
Nagatsuka Ikutaroh
Takeda Masayuki
Fuji 'Xerox Co., Ltd.
Goodrow John L.
Nippon Iron Powder Co. Ltd.
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