METHOD OF MANUFACTURING TONER MOTHER PARTICLE, TONER PARTICLE, METHOD OF MANUFACTURING TONER, AND TONER

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing a toner mother particle or a toner capable of controlling the particle size distribution and shape, and the toner mother particle or the toner manufactured by the above method. SOLUTION: The present invention is the method of manufacturing the toner mother particle or the toner having at least a process for emulsifying and/or dispersing an oil phase containing at least a pigment, a binding resin and/or a binding resin precursor in an aqueous medium to make an emulsified dispersion liquid including emulsified particles, a process for constricting the emulsified dispersion liquid and making a toner mother particle, and a process for dehydrating and drying the toner mother particle. The Casson yield value of the oil phase before it is emulsified and/dispersed in the aqueous medium in the independent state is 0.5-20 Pa, and the temperature Tn of the emulsified dispersion liquid in the process for making the emulsified dispersion liquid, the temperature Ts of the emulsified dispersion liquid in the process for making the toner mother particle, and the glass transition temperature Tg of the toner mother particle satisfy the relationship of Tn