| 摘要 |
<p>PURPOSE:To provide toner in which difference of developing conditions between respective particle size following to broadening of particle size distribution of toner is made minimum, image concentration is high for a long term, stable image quality without fogging of a non-image part can be obtained, the function capable of stably cleaning a photosensitive body for a long term is provided, and fouling inside and outside the device due to dispersion of toner or the like is not generated for a long term. CONSTITUTION:In toner for electrophotography having toner particles and an additive agent, it is featured that the toner is obtained by mixing a toner group A and a toner group B which are obtained by respectively adding additive agent to at least two sorts toner particle groups (a), (b) of different particle size distribution, the mean particle size of the toner particle group (a) is smaller than the mean particle size of the toner particle group (b), and the additive quantity of the additive agent of the toner group A is more than the additive quantity of the additive agent of the toner group B.</p> |
