Patent ID: 6194118
Filing Date: 2001-02-27
Classification: G03G

Abstract:
A method for manufacturing a color toner, comprising:a) preparing a toner master batch consisting of a binder resin, a coloring agent and a release agent by:i) mixing said three materials thereby preparing a mixture (1);ii) melting mixture (1) by applying heat thereto;iii) kneading mixture (1);iv) cooling kneaded mixture (1) to solidify the mixture (1); andv) pulverizing kneaded mixture (1) thereby preparing a particulate toner master batch; andb) preparing the color toner consisting of said toner master batch, a binder resin and a charge controlling agent by:i) mixing these three materials thereby preparing a mixture (2);ii) melting mixture (2) by applying heat thereto; andiii) kneading mixture (2).