Toner for electrophotography and method of preparation thereof

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

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430137, G03G 9097

Patent

active

060370904

ABSTRACT:
A colorant in a toner comprising a binder resin and a colorant is dispersed by a dispersant polymer having an acid value of from 1 mgKOH/g or more to 27 mgKOH/g or less and an amine value of from 1 or more to 100 or less. Thus, dispersibility of the colorant in the toner is improved, so as to obtain a negatively chargeable toner for electrophotography having excellent chargeability, storage ability, color developability, and light transmittance through OHP transparencies.

REFERENCES:
patent: 5591556 (1997-01-01), Shimomura et al.
patent: 5760257 (1998-06-01), Tanaka et al.
patent: 5802428 (1998-09-01), Ohno et al.

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