Toner for developing electrostatic latent images
US9703218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2014 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Oct 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08797
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner for developing electrostatic images contains a first resin and a second resin. The first resin is a crystalline polyester resin composed of a dicarboxylic acid unit and a dialcohol unit. The first resin has a weight average molecular weight of 5000 to 100000. The second resin has a weight average molecular weight of 5000 to 60000. The second resin is a polyester resin composed of a crystalline segment and an amorphous segment. The crystalline segment has a weight average molecular weight of 200 to 3000 and is composed of a dicarboxylic acid unit and a dialcohol unit. In the toner, a specific carbon number relationship is present between each unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.