Electrostatic-image developer and process cartridge
US10831119B2 · kind B2 · utility
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9Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 13, 2019 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Aug 13, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/1814
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic-image developer includes a toner and a resin-coated carrier. The toner includes toner particles including a binder resin, a release agent, and a non-ionic surfactant. The resin-coated carrier includes magnetic particles and a resin layer covering the magnetic particles. The resin-coated carrier has an absolute specific gravity of 3 g/cm3 or more and 4 g/cm3 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.