Positively chargeable two-component developer, image forming method, and image forming apparatus
US8383308B2 · kind B2 · utility
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10References
5Claims
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Key dates
| Filing date | Oct 29, 2008 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Apr 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1136
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A positively chargeable two-component developer, including at least a toner and a carrier, wherein the toner contains a binder resin, a colorant, a wax, and a charge control agent, the binder resin contains at least a polyester resin and an addition polymerization resin grafted with a polyolefin, the wax and the addition polymerization resin grafted with a polyolefin are contained at a wax:addition polymerization resin grafted with a polyolefin ratio of from about 40:60 to about 80:20, and the carrier is a magnetic powder having a coating layer containing a methyl-containing silicone resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.