Toner, and method for manufacturing toner
US9785065B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2015 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Mar 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1136
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner including: binder resin; and release agent, wherein the release agent is 1% to 8% by mass to the toner, as equivalent mass of endothermic amount of the release agent determined by DSC, wherein the release agent present in region from surface of the toner to 0.3 μm depth is 0.1% to 4% by mass, as determined by FTIR-ATR, and wherein, in TEM image of torn surface of the toner, WDa<WDb<WDc is satisfied, WDa denoting number-average-particle-diameter of the release agent in region Aa that is from surface of the toner to depth that is one-sixth of diameter d of the toner (⅙d), WDc denoting number-average-particle-diameter of the release agent in central region Ac that is circular region having center located at center of the toner and radius of ⅙d, WDb denoting number-average-particle-diameter of the release agent in region Ab that is other than region Aa or Ac.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.