Yellow toner, developer, process cartridge, image forming apparatus, and image forming method
US10859934B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Dec 27, 2019 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Dec 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2064
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A yellow toner is provided. The yellow toner comprises toner particles each comprising a binder resin and a colorant, and 1.0% to 15.0% by number of the toner particles have a CH rate of 25.0% or more in absolute value. Here, the CH rate is calculated from the following formula (1): CH rate (%)=[(In−Iave)/Iave]×100 Formula (1) where In represents an integrated intensity within a wavenumber region of from 2,750 to 3,250 cm−1 when an intensity at a wavenumber λ within a wavenumber region of from 950 to 3,250 cm−1 is normalized to 1 in a Raman spectrum of each toner particle; and Iave represents an average of the In.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.