Toner and manufacturing process therefor
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 Z1 is a bond or linker group and 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; and f) 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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