Developing agent, image forming method and image forming apparatus
US8163452B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Oct 21, 2008 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Sep 14, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0607
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing agent includes a carrier; a toner in which an inorganic oxide external additive has a coverage of from 60 to 120% relative to a core toner; and a charging auxiliary particle having charge properties of a positive electrode and having a volume average particle size of from 5 to 15 μm in an addition amount of from 0.5 to 6% by weight relative to the developing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.