Electrophotographic developer and producing method thereof

Details Electrophotographic developer and producing method thereof Electrophotographic developer and producing method thereof

1999-09-24

2000-04-25

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

G03G 908

Patent

active

060542454

ABSTRACT:
An object of the present invention is to provide an electrophotographic developer having a good fluidity, an excellent shelf stability, and a lesser reduction in image quality under various conditions.
An electrophotographic one component nonmagnetic developer includes toner particles obtained by polymerizing a polymerizable monomer component, such as styrene, methacrylate, acrylate and the like, and outer-additives, such as silicon dioxide particles, on the toner particles. The developer has pH of 4 to 7 measured by a decoction method, and .sigma.2 of not more than 20 .mu.S/cm and .sigma.2-.sigma.1 of 0 to 10 .mu.S/cm, in which .sigma.1 is an electric conductivity of water, .sigma.2 is an electric conductivity measured by a decoction method.

REFERENCES:
patent: 3544458 (1970-12-01), Sato
patent: 4430409 (1984-02-01), Matsumoto et al.
patent: 4661439 (1987-04-01), Ruskin
patent: 4954412 (1990-09-01), Breton et al.
patent: 5104764 (1992-04-01), Wada et al.
patent: 5266432 (1993-11-01), Hayashi et al.
patent: 5482812 (1996-01-01), Hopper et al.
patent: 5525452 (1996-06-01), Hopper et al.
patent: 5660965 (1997-08-01), Mychajlowskij et al.
patent: 5962179 (1999-10-01), Agur et al.

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