MANUFACTURING METHOD OF ELECTROSTATIC CHARGE IMAGE DEVELOPMENT TONER

To provide a manufacturing method of electrostatic charge development toner capable of achieving thin line reproducibility.SOLUTION: There is provided a manufacturing method of electrostatic charge image development toner which includes: toner base particles each containing binder resin and coloring agent; and external additive containing inorganic particles A having number average particle diameter of 60 nm or more and 100 nm or less and reversely charged polarity with respect to the toner base particles and inorganic particles B having number average particle diameter of 30 nm or more and 60 nm or less and equally charged polarity with respect to the toner base particle. The manufacturing method includes: a step A of mixing the toner base particle into 3.2 parts by mass or more and 4.8 parts by mass or less of the inorganic particle A to the toner base particle 100 parts by mass, and externally adding the inorganic particle A in the toner base particle; and a step B of mixing the toner base particle into 0.2 parts by mass or more and 1.7 parts by mass or less of the inorganic particle B to the toner base particle 100 parts by mass, and externally adding the inorganic particle B in the toner base particle.SELECTED DRAWING: None 【課題】良好な細線再現性を得ることができる静電荷現像用トナーの製造方法に関すること。【解決手段】結着樹脂及び着色剤を含有するトナー母粒子と、個数平均粒子径が60nm以上100nm以下であり、該トナー母粒子に対して逆帯電極性の無機粒子Ａ及び個数平均粒子径が30nm以上60nm以下であり、該トナー母粒子に対して同帯電極性の無機粒子Ｂを含有する外添剤とを含有する静電荷像現像用トナーの製造方法であって、前記トナー母粒子と、該トナー母粒子100質量部に対して、3.2質量部以上4.8質量部以下の無機粒子Ａを混合し、トナー母粒子に無機粒子Ａを外添する工程Ａ、及び前記トナー母粒子と、該トナー母粒子100質量部に対して、0.2質量部以上1.7質量部以下の無機粒子Ｂを混合し、トナー母粒子に無機粒子Ｂを外添する工程Ｂを含む、静電荷像現像用トナーの製造方法。【選択図】なし