Toner composition suited for fixing by non-contact fusing

Details Toner composition suited for fixing by non-contact fusing Toner composition suited for fixing by non-contact fusing

1995-01-05

1995-12-19

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

Post imaging process, finishing, or perfecting composition...

430110, 430111, G03G 9087

Patent

active

054767423

ABSTRACT:
A dry powder toner of which the particles are electrostatically or magnetically attractable and suited for development of electrostatic charge images or magnetic patterns and wherein the composition of said powder particles includes a resin binder comprising at least one resin A and at least one resin B, characterized in that:
(1) said resin(s) A and said resin(s) B each have a glass transition temperature (Tg) larger than 45.degree. C.,
(2) the Tg of said resin(s) A is at least 2.5.degree. C. lower than the Tg of said resin(s) B,
(3) the melt viscosity (mvA) of said resin(s) A is at least 500 poise and the melt viscosity (mvB) of said resin(s) B is within the scope of the following equation:

REFERENCES:
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patent: 4331755 (1982-05-01), Gilliams et al.
patent: 4693952 (1987-09-01), Koizumi et al.
patent: 4908290 (1990-03-01), Watanabe et al.
patent: 5082883 (1992-01-01), Alexandrovich et al.
patent: 5254421 (1993-10-01), Coppens et al.

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