Patent ID: 11892800
Assignee: FUJIFILM BUSINESS INNOVATION CORP.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for producing a toner for electrostatic charge image development, the method comprising:
aggregating binder resin particles in a dispersion containing the binder resin particles to form aggregated particles;
after forming the aggregated particles, terminating growth of the aggregated particles by adding an alkaline aqueous solution to a dispersion containing the aggregated particles to increase a pH of the dispersion containing the aggregated particles; and
after terminating the growth of the aggregated particles, fusing and coalescing the aggregated particles into toner particles by heating the dispersion containing the aggregated particles,
wherein terminating the growth of the aggregated particles includes, while stirring the dispersion containing the aggregated particles, stepwise reducing a stirring power per unit volume, and
wherein terminating the growth of the aggregated particles includes:
stepwise adding the alkaline aqueous solution to stepwise increase the pH of the dispersion containing the aggregated particles; and
stepwise reducing the stirring power per unit volume as the pH of the dispersion containing the aggregated particles increases stepwise,

wherein, after each reduction of the stirring power per unit volume and addition of the alkaline aqueous solution, the stirring power per unit volume is maintained for a predetermined period of time.