Toner for developing electrostatic images, and process for produ

Details Toner for developing electrostatic images, and process for produ Toner for developing electrostatic images, and process for produ

1997-08-15

1998-06-30

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

G03G 9093, G03G 9097

Patent

active

057731853

ABSTRACT:
A toner which comprises toner particles containing a binder resin, a colorant, a polar resin and a release agent, wherein the binder resin is a styrene polymer, a styrene copolymer, or a mixture of these, and has a weight average molecular weight Mw.sub.1 of from 10,000 to 1,000,000, the polar resin is a polyester resin containing a tetrahydrofuran-soluble matter of which weight average molecular weight Mw.sub.2 is from 7,000 to 50,000 and an ethyl alcohol-soluble matter of which weight average molecular weight Mw.sub.3 is from 1,000 to 7,000, where Mw.sub.2 /Mw.sub.3 is from 1.2 to 10.

REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 3666363 (1972-05-01), Tanaka et al.
patent: 4071361 (1978-01-01), Marushima
patent: 5510222 (1996-04-01), Inaba et al.
patent: 5529873 (1996-06-01), Chiba et al.

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