Toner
US11099493B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | May 7, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08797
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner comprising a toner particle containing a resin component, wherein the resin component contains an amorphous polyester and a crystalline polyester, and in depth profile measurement of secondary ions on the toner particle surface by TOF-SIMS, given Ia(t) as the intensity of secondary ions derived from the amorphous polyester, Ic(t) as the intensity of secondary ions derived from the crystalline polyester, and I(t) as the total detected intensity of secondary ions derived from resin contained in the toner particle at a depth of t (nm) from the toner particle surface, the following formulae are satisfied within the range of 0≤t≤10: Ia(t)>Ic(t)>0.0000(Ia(t)+Ic(t))/I(t)≥0.80 and there is only one point of intersection between the depth profile curve of Ia(t) and Ic(t) within the range of 10≤t≤30.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.