Electrostatic latent image developing toner and production method of the same
US10216109B2 · kind B2 · utility
0Cited by
2References
10Claims
0Family size
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Key dates
| Filing date | Apr 8, 2016 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Apr 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09392
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic latent image developing toner includes a plurality of toner particles each including a toner core and a shell layer covering a surface of the toner core. The shell layer contains a hydrophobic thermoplastic resin and a positively chargeable hydrophilic water-insoluble resin. An existing amount A of alkali metal elements present in a surface layer of the shell layer measured by X-ray photoelectron spectroscopy and an existing amount B of alkali metal elements present in a toner particle as a whole measured by fluorescent X-ray analysis satisfy expressions (a) and (b) shown below A≤300 ppm (a)0.5≤A/B<1.0 (b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.