Toner and manufacturing process therefor

Details Toner and manufacturing process therefor Toner and manufacturing process therefor

2011-01-04

2011-01-04

Le, Hoa V (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

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

Process of making developer composition

C430S108100, C430S110100, C430S137100

Reexamination Certificate

active

07862978

ABSTRACT:
The invention provides a process for the manufacture of a toner which comprises the steps of:a) providing a latex dispersion containing primary resin particles and surfactant;b) providing a colorant dispersion containing primary colorant particles and surfactant;c) optionally providing a wax dispersion containing primary wax particles and surfactant;d) providing at least one carboxy functional compound of Formula (1), which may be in acid, salt and/or complex form:wherein R is a carbocyclic or heterocyclic radical which may be optionally substituted and Z1is a bond or linker groupand wherein the amount of carboxy functional compound of Formula (1) provided is greater than 3% by weight, the amount of carboxy functional compound being calculated according to the following equation:amount⁢⁢of⁢⁢carboxy⁢⁢functional⁢⁢⁢compound⁢⁢(%⁢⁢weight)=100×weight⁢⁢⁢of⁢⁢carboxy⁢⁢functional⁢⁢compound(weight⁢⁢of⁢⁢carboxy⁢⁢functional⁢⁢compound+weight⁢⁢of⁢⁢solids⁢⁢content⁢⁢of⁢⁢latex,colorant⁢⁢and⁢⁢optional⁢⁢wax⁢⁢dispersions+weight⁢⁢of⁢⁢⁢any⁢⁢additional⁢⁢surfactant)e) mixing the latex dispersion, colorant dispersion, optional wax dispersion and said carboxy functional compound; andf) causing the particles in the mixture to associate.The process advantageously may produce a toner of small size and narrow particle size distribution. The present invention also provides a toner manufactured by the process.

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