Toner for forming electrostatic image, developer, process cartridge, and image forming apparatus
US9239530B2 · kind B2 · utility
2Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2013 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Sep 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08797
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To provide a toner, which contains a colorant, a binder resin, and a releasing agent, wherein the toner satisfies the following (a) to (c): (a) the toner contains at least a polyester resin as the binder resin; (b) the toner has Tg1st of 25° C. to 50° C.; and (c) the toner has a TMA compressive deformation rate (TMA %) of 10% or lower at 50° C. under a condition having relative humidity of 70%, wherein the Tg1st is glass transition temperature of the toner for first heating, as the toner is measured by a DSC system (a differential scanning calorimeter).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.