Full color toner for electrostatic charge development, method fo

Details Full color toner for electrostatic charge development, method fo Full color toner for electrostatic charge development, method fo

1996-03-05

1997-06-10

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

To produce color reproduction

430109, 430137, G03G 1301, G03G 9087

Patent

active

056374275

ABSTRACT:
A color toner and a black toner for electrostatic charge development comprises a binder resin and a colorant, wherein the binder resin comprises a polyester resin containing (a) an ethoxylated bisphenol type diol, (b) a propoxylated bisphenol type diol and (c) an aromatic dicarboxylic acid or an anhydride or ester thereof, as main monomer components, and the polyester resin further containing (d) at least one compound selected from the group consisting of alkylsuccinic acids, acid anhydrides and esters thereof, alkenylsuccinic acids, and acid anhydrides and esters thereof in an amount of 7 to 25 mol % based on the total monomer amount of the polyester resin, and the colorant is a flushing pigment comprising hydrous paste of an organic pigment and the polyester resin, or comprising a carbon black having a primary particle size of from not less than 30 nm to not more than 50 nm. Furthermore, a method for producing the color toner and the black toner, and an method for forming a full color image using the color toners or using the color toners and the black toner in combination, are disclosed.

REFERENCES:
patent: 2962374 (1960-11-01), Dessauer
patent: 5258255 (1993-11-01), Shimizu et al.
patent: 5294682 (1994-03-01), Fukuda et al.
patent: 5407772 (1995-04-01), Bayley et al.
patent: 5429898 (1995-07-01), Sugizaki et al.
patent: 5437954 (1995-08-01), Saito

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