Carrier for two-component developer, two-component developer using the carrier, and image forming method and process cartridge using the two-component developer
US9298119B2 · kind B2 · utility
1Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2014 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Jan 29, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/1803
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A carrier is provided. The carrier includes a particulate magnetic core, and a cover layer located on the surface of the particulate magnetic core and including a resin and a filler. When determined from observation of cross-section of the carrier, the shape factor SF2 of the carrier is from 120 to 160, the ratio of the average domain diameter of the particulate magnetic core to the number average particle diameter of the filler is from 1:1 to 1:0.003, and the area ratio of the filler in the cover layer is from 30 to 85%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.