Method for producing toner for developing electrostatic images
US10409182B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2017 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Feb 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0926
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for efficiently producing a toner for developing electrostatic images, which contains very few coarse particles and having excellent printing characteristics. The method can comprise a sieving step of removing coarse particles from colored resin particles by, using an air flow, supplying the colored resin particles to a sieve, wherein a metal mesh laminate comprising at least two metal meshes attached to each other by sintering, the metal meshes being different in opening size, is used as the sieve; wherein the metal meshes of the metal mesh laminate are laminated in order of opening size and, of the metal meshes constituting the metal mesh laminate, one having a smallest opening size is disposed on a side of supplying the colored resin particles; and wherein the opening size of the metal mesh having the smallest opening size is in a range of from 32 to 110 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.