| 摘要 |
By reducing non-transferred toner on a photosensitive member, image density is sufficiently maintained and fogging in the non-imaged portion is prevented. The developing agent for non-magnetic monocomponent development is a toner comprising toner particles and an external additive adhered on the surface of the toner particles, wherein the external additive comprises inorganic fine particles (A), which are surface-treated with aminosilane and dimethylpolysiloxane and have a polarity reverse to that of the toner, and inorganic fine particles (B) having the same polarity as that of the toner.
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