External additive for toner for electrophotography, toner for electrophotography, double-component developer for electrophotography, image forming process using the toner, and image-forming apparatus using the toner
An external additive for a toner for electrophotography which contains oxide fine particles which contain silicon, in which the oxide fine particles have a primary particle diameter of 30nm to 300nm in number average, a standard deviation sigma of a particle size distribution of the primary particle...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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