Method for producing toner for electrostatic charge image development, toner for electrostatic charge image development, and electrostatic charge image developer
US11892800B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2021 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Oct 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09392
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for producing a toner for electrostatic charge image development includes: aggregating binder resin particles in a dispersion containing the binder resin particles to form 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 fusing and coalescing the aggregated particles into toner particles by heating the dispersion containing the aggregated particles. Terminating the growth of the aggregated particles includes, while stirring the dispersion containing the aggregated particles, stepwise or continuously reducing a stirring power per unit volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.