Toner for developing electrostatic image comprising color resin

Details Toner for developing electrostatic image comprising color resin Toner for developing electrostatic image comprising color resin

1991-03-08

1993-06-15

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

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

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

430109, 430904, G03G 9087

Patent

active

052196976

ABSTRACT:
A toner for developing an electrostatic image, comprising color resin particles and a particulate additive. The color resin particles contain at least a coloring agent and a binding resin. The color resin particles possess irregular surfaces but not breaks, and the irregularity may be formed by depositing and fixing onto the surface fine resin particles having an average particle size in a range of 1/200 to 1/10 of the color resin particle size. A particulate additive has an average particles size of not more than 1/10 of volume average particle size of the color resin particles. The BET specific surface area of the toner changes by 20% or less before and after the forced stirring of the toner.

REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 4804610 (1989-02-01), Mori et al.
patent: 4816366 (1989-03-01), Hyosu et al.
patent: 4868085 (1989-09-01), Aita
patent: 4912010 (1990-03-01), Mori et al.
patent: 4939060 (1990-07-01), Tomiyama et al.
patent: 4960669 (1990-10-01), Mori et al.

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