Toner
US10642178B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2019 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Apr 8, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08797
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A toner comprising a toner particle including a binder resin and a crystalline polyester resin, wherein the binder resin is an amorphous polyester resin having a linear alkyl group at a molecular chain terminal; the crystalline polyester resin is a polycondensate of a diol and a dicarboxylic acid; the number of carbon atoms CaPES of the linear alkyl group, the number of carbon atoms COH of the diol, and the number of carbon atoms CAc of the dicarboxylic acid, excluding carbon that belongs to carboxyl groups, satisfy the following relationships; and a glass transition temperature of the toner as measured by a differential scanning calorimeter is from 40.0° C. to 55.0° C. 8≤CaPES≤20 (1)CAc/COH≥3.5 and 0≤|CAc−CaPES|≤3 (2)COH/CAc≥3.5 and 0≤|COH−CaPES|≤3 (3)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.