PRODUCTION METHOD OF TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT

PROBLEM TO BE SOLVED: To provide a production method of a toner for electrostatic charge image development, the toner excellent in low-temperature fixability and temporal stability of the low-temperature fixability and excellent in durability in continuous printing.SOLUTION: The production method of a toner for electrostatic charge image development includes the following steps (1) to (4): a step (1) of carrying out polycondensation of a polyhydric alcohol component and a polyvalent carboxylic acid component in the presence of a hydrocarbon wax (W1) having a hydroxyl group or a carboxy group to obtain a crystalline polyester (A) containing a structural component derived from the hydrocarbon wax (W1); a step (2) of dispersing the crystalline polyester (A) obtained in the step (1) in an aqueous medium to obtain an aqueous dispersion of resin particles (X); a step (3) of coagulating the resin particles (X) obtained in the step (2) in an aqueous medium in the presence of an amorphous resin (B) containing a polyester segment (b1) and wax (W2) to obtain coagulated particles; and a step (4) of fusing the coagulated particles obtained in the step (3).SELECTED DRAWING: None 【課題】低温定着性及び低温定着性の経時安定性に優れ、連続印刷への耐久性にも優れる静電荷像現像用トナーの製造方法を提供する。【解決手段】下記工程（１）〜（４）を含む、静電荷像現像用トナーの製造方法である。工程（１）：水酸基又はカルボキシ基を有する炭化水素ワックス（Ｗ１）の存在下で、多価アルコール成分と多価カルボン酸成分との重縮合を行い、該炭化水素ワックス（Ｗ１）由来の構成成分を含有する結晶性ポリエステル（Ａ）を得る工程工程（２）：前記工程（１）で得られた結晶性ポリエステル（Ａ）を水性媒体中に分散させ、樹脂粒子（Ｘ）の水系分散体を得る工程工程（３）：前記工程（２）で得られた樹脂粒子（Ｘ）を、水性媒体中で、ポリエステルセグメント（ｂ１）を含有する非晶質樹脂（Ｂ）及びワックス（Ｗ２）の存在下で凝集させて、凝集粒子を得る工程工程（４）：前記工程（３）で得られた凝集粒子を融着させる工程【選択図】なし