Toner
US11841681B2 · kind B2 · utility
0Cited by
62References
7Claims
0Family size
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Key dates
| Filing date | Jun 15, 2021 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | Aug 20, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2150/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner comprising a toner particle and an external additive, wherein the external additive comprises a composite particle comprising an organosilicon polymer fine particle covering a surface of an alumina particle, a coverage ratio of the surface of the alumina particle with the organosilicon polymer fine particle is 1 to 50 area %, and given A (nm) as a number-average particle diameter of primary particles of the organosilicon polymer fine particle and B (nm) as a number-average particle diameter of primary particles of the alumina particle, following formulae (I) and (II) are satisfied: A≤90 (I)100≤B≤1000 (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.