Toner and method for producing toner
US10656545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2019 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Jun 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/107
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner has a toner particle including a binder resin, the binder resin includes a polymer A, the polymer A contains a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is selected from (meth)acrylic acid esters having an alkyl group having 18 to 36 carbon atoms, the content of the first monomer unit in the polymer A is 5.0 mol % to 60.0 mol %, the content of the second monomer unit in the polymer A is 20.0 mol % to 95.0 mol %, the SP value of the first monomer unit and the SP value of the second monomer unit satisfy a predetermined relationship, the polymer A includes a predetermined polyvalent metal, and the content of the polyvalent metal is 25 ppm to 500 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.