Toner for developing electrostatic latent image, process for man

Details Toner for developing electrostatic latent image, process for man Toner for developing electrostatic latent image, process for man

1997-06-25

1999-08-10

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

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

430111, 430126, 430137, G03G 9097

Patent

active

059357517

ABSTRACT:
Disclosed is a toner for developing an electrostatic latent image comprising a binding resin and a colorant, wherein the toner contains from 0.1% to 40% by weight of wax, the amount of wax disposed on the surface of the toner is from 1% to 10% by weight, and the number-average dispersion diameter of the wax is from 0.1 to 2 .mu.m. The toner is produced by a process comprising a step of dissolving or dispersing each of the raw materials of the resin, colorant, and wax into an organic solvent to form an oil-phase component, and a step of granulating the oil-phase component in an aqueous solvent, or a step of granulating the oil-phase component in an aqueous solvent and a step of suspension-polymerizing the particles formed in the granulation step. It is desirable that the wax be finely dispersed beforehand and that the wax be flake-shaped. The toner for developing an electrostatic latent image has the advantages that it is not necessary to supply oil to a fixing system and that the oilless fixing capability, the powder characteristics of the toner using wax, the filming characteristics, and the high transfer capability required for forming a color image can be satisfied compatibly.

REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 3666363 (1972-05-01), Tanaka et al.
patent: 5219697 (1993-06-01), Mori et al.
patent: 5368972 (1994-11-01), Yamashita et al.
patent: 5635325 (1997-06-01), Inaba et al.

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