METHOD FOR MANUFACTURING TONER, MASTER BATCH PIGMENT, COLOR TONER, METHOD FOR MANUFACTURING COLOR TONER, METHOD FOR FORMING IMAGE AND IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To improve the coloring degree and transparency as well as to obtain electrification stability in a high temperature environment. SOLUTION: The toner is prepared by using a dry powdery pigment as the pigment and by adding water to mix the dry powdery pigment and a binder resin to obtain a mixture, then heating and kneading the mixture to remove the water added during mixing. The mixture is kneaded in such a manner that the mixture shows 0.01 to 5.0% weight reduction by drying at 110 deg.C and =0.5% weight reduction by drying at 70 deg.C after kneaded.