Toner
US12429791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2024 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Mar 26, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09725
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner includes toner particles containing a binder resin, a colorant, and inorganic fine particles, in which in a depth profile of an element distribution in a depth region from the outermost surface of a particle to a depth of 500 nm the depth profile being obtained by an element analysis performed by X-ray photoelectron spectroscopy using the toner as a sample, two or more minimum points of a concentration of a carbon element in the depth region exist, a concentration of an inorganic element becomes a maximum value at a depth position corresponding to each of the minimum points, and the inorganic element is an element derived from the inorganic fine particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.