Toner process with cationic salts
First Claim
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1. A process for the preparation of toner comprising mixing an emulsion latex, a colorant dispersion, and monocationic salt, and which mixture possesses an ionic strength of from about 0.001 molar (M) to about 5 molar, and optionally cooling.
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Abstract
A process for the preparation of toner comprising mixing an emulsion latex, a colorant dispersion, and monocationic salt, and which mixture possesses an ionic strength of from about 0.001 molar (M) to about 5 molar, and optionally cooling.
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Citations
30 Claims
- 1. A process for the preparation of toner comprising mixing an emulsion latex, a colorant dispersion, and monocationic salt, and which mixture possesses an ionic strength of from about 0.001 molar (M) to about 5 molar, and optionally cooling.
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16. A process for the preparation of toner comprising
mixing an emulsion latex comprised of sodio sulfonated polyester resin particles of less than about 0.1 micron in size diameter by heating said resin particles in water at a temperature of from about 15° - C. to about 30°
C. above the resin glass transition temperature and a colorant dispersion followed by the addition of a monoatomic halide until an increase in viscosity results, and wherein the latex mixture possesses an ionic strength of from about 0.001 M to about 5 M;heating the resulting mixture at a temperature of from about 45°
C. to about 80°
C. thereby enabling aggregation and coalescence of particles of resin and colorant simultaneously, followed by cooling, isolating, washing and drying, and wherein there results toner particles of from about 2 to about 20 microns in volume average diameter.
- C. to about 30°
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17. A process for the preparation of toner comprising mixing an emulsion latex comprised of sodio sulfonated polyester resin particles, a colorant and a monocationic salt;
- and heating the resulting mixture thereby simultaneously causing aggregation and coalescence.
- View Dependent Claims (18, 19)
- 26. A process for the preparation of toner consisting essentially of mixing an emulsion latex, a colorant dispersion, and monocationic salt, and which mixture possesses an ionic strength of from about 0.001 molar (M) to about 5 molar.
Specification