Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1994-07-07
1995-12-05
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430137, G03G 9097
Patent
active
054728193
ABSTRACT:
A developer composition of the present invention contains a toner having at least a binder resin, a coloring agent and a toner scum preventive. The binder resin contains as a main component a polyester resin or a resin produced by concurrently carrying out addition polymerization and condensation polymerization in one reaction vessel. By using the toner of the present invention, since the formation of toner scum on the carrier surface can be prevented for a long period of time in the service life of the developer while retaining the low-temperature fixing ability of the toner, the carrier resistance and the triboelectric charge can be stably maintained, thereby providing a developer composition with a long service life. Accordingly, besides having a long service life mentioned above, the developer composition is highly suitably used for a high-speed semiconductive magnetic development.
REFERENCES:
patent: 3590000 (1971-06-01), Palermiti et al.
patent: 3635704 (1972-02-01), Palermiti et al.
patent: 3655374 (1972-04-01), Palermiti et al.
patent: 5364728 (1994-11-01), Ohta et al.
US 3590000 & US 3655374 Corresponding to JPA 71-12680 which was disclosed in Specification.
Hayashi Nirohiro
Katoh Tohru
Kawabe Kuniyasu
Yoshimura Kanji
Goodrow John
Kao Corporation
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