Patent ID: 9715184
Date: 2017-07-25
CPC Classifications: G03G

Claim:
1. A method for producing a toner for electrostatic image development comprising at least an amorphous polyester and a crystalline polylactic acid, the method comprising: mixing an amorphous polyester and a crystalline polylactic acid having a number-average molecular weight of 50,000 or more and 300,000 or less at a temperature of from 140° to 250° C.; melt-kneading a mixture obtained from said mixing; and pulverizing and classifying a melt-kneaded product obtained from said melt-kneading, wherein a mass ratio of the amorphous polyester to the crystalline polylactic acid present during the mixing is from 90/10 to 50/50, and wherein a content of the crystalline polylactic acid in the toner is 5.5% by mass or more of a total amount of the amorphous polyester and the crystalline polylactic acid present during said mixing.