Toner
US9141012B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2013 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Dec 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08797
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The toner includes toner particles containing a polyester resin A, a polyester resin B and a colorant, the polyester resin A has a polyester portion including a segment capable of forming a crystal structure and a crystal nucleating agent segment, which is bonded to an end of the polyester portion, and the polyester resin B is a resin which is free of any segments capable of forming a crystal structure, the polyester resin B has a weight average molecular weight Mwb by GPC of a THF soluble matter of 3000 or more and 100000 or less, and an SP value Sa ((cal/cm3)1/2) of the polyester portion of the polyester resin A and an SP value Sb ((cal/cm3)1/2) of the polyester resin B satisfy the following relationships:9.00≦Sa≦10.50−0.40≦Sb−Sa≦0.80.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.