Magnetic carrier and two-component developer
US9058924B2 · kind B2 · utility
47Cited by
50References
3Claims
0Family size
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Key dates
| Filing date | May 24, 2013 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | May 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1131
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A magnetic carrier having a resin-containing ferrite particles each containing a porous ferrite core and a resin in pores of the porous ferrite core, wherein the porous ferrite core has a particular pore diameter corresponding to the maximum logarithmic differential pore volume in a pore diameter range from at least 0.10 μm to not more than 3.00 μm, the resistivity of the porous ferrite core is in a particular range, and the porous ferrite core contains an oxide of Mg in a particular amount and contains a particular amount of a oxide of at least one metal selected from the group consisting of Mn, Sr, and Ca.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.