Carrier, xerographic developer, and carrier production method
US12204280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2020 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Sep 6, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1135
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a carrier including: a magnetic core material; and a resin coating layer coating a surface of the magnetic core material, in which the resin coating layer contains a binder resin, and fluorine element-containing resin particles dispersed in the binder resin, the resin coating layer has a coefficient of variation of a film thickness of 25% or less, and the resin coating layer has an average value of the number of the fluorine element-containing resin particles being 3 particles/μm2 or more and 350 particles/μm2 or less per unit area in a cross section of the resin coating layer, and has a coefficient of variation thereof being 20% or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.