Carrier core material for electrophotographic developer and method for producing the same, and carrier for electrophotographic developer and developer containing said carrier core material
US11112716B2 · kind B2 · utility
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0References
21Claims
0Family size
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Key dates
| Filing date | Jan 23, 2020 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Jan 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/113
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a carrier core material for electrophotographic developer, having a ferrite composition and having a supernatant transmittance of 85.0% or more, a method for producing the carrier core material, a carrier for electrophotographic developer, containing the carrier core material, and a developer containing the carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.