Manufacturing process for liquid developer

Details Manufacturing process for liquid developer Manufacturing process for liquid developer

1971-10-20

1977-04-26

Brammer, Jack P.

Compositions

Electrolytes for electrical devices

G03G 900

Patent

active

040199932

ABSTRACT:
A manufacturing process for liquid developer intended for developing the electrostatic latent image characterized by polymerizing one or more kinds of addition-polymerizable monomers with a mixture containing pigment and polymerization initiator to thereby obtain a graft polymer of the monomers and the pigments and treating the resultant polymerized product with a polar solvent of 12 or higher in dielectric constant, and then dispersing the component of the resultant product insoluble in the solvent in the carrier liquid of the liquid developer with high electric resistance whereby (a) the electric resistance of the developer, (b) the uniformity of the charge of the toner in the developer, and (c) the length of charge stability are enhanced because of the treating step.

REFERENCES:
patent: 3337288 (1967-08-01), Horiguchi et al.
patent: 3467642 (1969-09-01), Horiguchi et al.
patent: 3503881 (1970-03-01), Shinohara et al.
patent: 3554946 (1971-01-01), Okuno et al.
patent: 3623986 (1971-11-01), Machida et al.
patent: 3629117 (1971-12-01), Okuno
patent: 3657130 (1972-04-01), Machida et al.
patent: 3671646 (1972-06-01), Kurita et al.

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