Decolorable toner and process for production thereof
US8940468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2012 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Aug 10, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0926
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a process for production of a decolorable toner, including: aggregating dispersed fine particles of a color material comprising at least a color-forming compound, a color-developing agent and a decoloring agent with dispersed fine particles comprising at least a binder resin comprising a polyester resin to form aggregates in an aqueous medium, adding a reactive polymer having an oxazoline group in to the aqueous medium, and fusing the aggregates in the aqueous medium. As a result, it becomes possible to produce a decolorable toner which suppresses the generation of fine powder due to the release of fine particles of an erasable color material from the toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.