Toner, developer, image forming method and image forming apparatus
US8741521B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2011 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Mar 12, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08797
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner containing toner particles, each toner particle containing: a releasing agent; a colorant; and a binder resin containing at least a crystalline polyester resin and a non-crystalline polyester resin, wherein in the case where a volume average particle diameter of the toner is defined as Dv, the toner contains a group of the toner particles having 4/5 Dv, and a group of the toner particles having 6/5 Dv, and wherein an endothermic value A of the crystalline polyester resin at a first temperature increase in DSC of the toner, an endothermic value B of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particle having 4/5 Dv, and an endothermic value C of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particles having 6/5 Dv satisfy the relation represented by the following formulas:50<(B/A)×100<90, and110<(C/A)×100<150.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.