| 摘要 |
<p>PROBLEM TO BE SOLVED: To enhance transfer efficiency by preventing lowering of image density and resolution characteristic of toner as well as formation of fogs. SOLUTION: Ferrite particles 1 containing an electrifying control agent are uniformly mixed particles having an average diameter of <=1.0μm, which are composed of ferrite 2 and the electrifying control agent 3 and in which the ferrite 2 and the electrifying control agent 3 are integrally stuck each other. As the ferrite 2 and the electrifying control agent 3 are uniformly mixed, the electrifying control agent 3 is uniformly dispersed in the toner, thereby the electrifying control agent 3 does not cohere each other and the formation of unevenness in electrification of the toner is avoided.</p> |
