Toner
US12386280B2 · kind B2 · utility
0Cited by
44References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 29, 2021 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Dec 10, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08755
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner having high rub resistance is provided. A toner including a toner particle containing a binder resin and a calcium carbonate particle, wherein in X-ray diffractometry of the toner particle by CuKα radiation, when the Bragg angle is defined as θ, (i) the calcium carbonate particle has peaks at 2θ of 26.5°±0.5° and 29.5°±0.5°, (ii) a crystallite diameter of crystals thereof attributed to 2θ=29.5°±0.5° is 10 nm or more and 45 nm or less, and (iii) the ratio (a/b) of a peak intensity “a” at 2θ=26.5°±0.5° to a peak intensity “b” at 2θ=29.5°±0.5° is 0.15 or more and 0.24 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.