| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a toner excellent in fluidity which does not cause increase in the contamination (fog) on a white base or decrease in the image density when the toner is repeatedly used for a copying machine, printer or the like. SOLUTION: In the toner prepared by mixing toner mother particles containing a binder resin, a coloring agent and a charge controlling agent with a fluidizing agent as an external additive, the charge controlling agent consists of a triphenylmethane dye and a quaternary ammonium salt, and the fluidizing agent consists of inorganic fine particles subjected to the surface treatment with silicone oil and inorganic fine particles subjected to the surface treatment with a silane coupling agent.</p> |
