| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide excellent toner mother particles and toner particles which obviate the occurrence of an increase of surface staining (fogging) of white ground parts, the degradation in image density and the adhesion of toner particle components to the surface of a photoreceptor drum, do not increase fogging and do not give rise to the degradation in a transfer rate in spite of the receipt of a change with lapse of time by resting under the high-temperature environment, do not give rise to splashing in the machine and have durability and stability. SOLUTION: The toners are prepared by mixing the toner mother particles containing a binder resin, the coloring agents and a charge control agents and a fluidizing agent which is an external additive. The specific surface area of the coloring agents by a BET method is 25 to 100 m2/g. The charge control agent does not substantially contain the particles exceeding 10μm and the fluidizing agent is the inorganic particles to be treated which are formed by treating their surfaces with silicone oil.</p> |
