Toner
US9029056B2 · kind B2 · utility
29Cited by
16References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2012 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Jun 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09321
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a toner having high charging rapidity to reach a sufficient charging amount in a short time, high stability of charging from the initial stage to a time when a large amount of sheets is printed out, and high stability of charging under a high temperature and high humidity. In a toner including toner particles, each of which contains at least a binder resin, a colorant, and a charge controlling resin, the charge controlling resin is a copolymer of a structure A having at least a specific salicylic acid derivative structure and a structure B having sulfonic acid or sulfonic acid ester as a substituent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.