Toner and developer
US8592117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2011 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Dec 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09733
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner including: a binder resin component; crystal nucleating agent; releasing agent; and colorant, wherein the binder resin component contains a crystalline polyester resin and a non-crystalline polyester resin, the crystal nucleating agent is at least one of an aliphatic ester compound and an aliphatic amide compound each having a melting point of 60° C. or higher but lower than 150° C., and wherein the toner satisfies Expressions (I) and (II):Tc>Tp+10 Expression (I)Tm>Tp+2 Expression (II)where Tp denotes lowest exothermic peak temperature [° C.] in 0° C. to 200° C. in DSC curve obtained DSC of the crystalline polyester resin, Tc denotes lowest exothermic peak temperature [° C.] in 0° C. to 200° C. in DSC curve obtained DSC of the crystal nucleating agent, and Tm denotes lowest exothermic peak temperature [° C.] in 0° C. to 200° C. in DSC curve through DSC of the mixture of the crystalline polyester resin and the crystal nucleating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.