Patent ID: 9081314
Filing Date: 2015-07-14
Classification: G03G

Abstract:
1. A method for producing a toner comprising at least four base materials: latex, wax, charge control agent (CCA), and colorant, comprising the steps of: a. preparing stable dispersions of at least one of each base material wherein mean particle size of the base material is less than 1000 nm; b. mixing the dispersions of step ‘a’ together wherein the particle size distribution among the base material particles are in predetermined ratios; c. heating of the mixture of step ‘b’ for flocculation to a temperature up to the Tg of the base material latex; d. optionally heating the above mixture above the Tg of the base material latex to consolidate the particles and control the shape of the particles; and e. obtaining toner particles, wherein said predetermined ratios of the particle size distribution among the base material particles are: latex to colorant, wax and CCA particle size distribution ratios are 0.1 to 1; colorant to latex, wax and CCA particle size distribution ratios are 10 to 1, 0.2 to 1, 0.2 to 1 respectively; wax to latex, colorant and CCA particle size distribution ratios are 10 to 1, 5 to 1 and 10 to 1 respectively; CCA to latex, colorant and wax particle size distribution ratios are 10 to 1, 5 to 1 and 0.1 to 1 respectively.