| 摘要 |
<p>PURPOSE:To contrive the compatibility of fluidity with the sticking prevention of a toner and to prevent the splashing of the toner, the void or chipping of an image by separating the particle diameter of silica to be externally added into every function and adding the silica having the average particle diameter of two kinds. CONSTITUTION:A sticking preventing silica 2 (large diameter silica) having a larger particle diameter and a fluidity improving silica 3 (small diameter silica) having a smaller average particle diameter are dispersed in a changeable toner 1. In this way, the silica 2, 3 different in particle diameter are added by the function to improve the fluidity and to prevent the sticking of the toner 1. That is, both effects of the fluidity and the prevention from sticking the toner 1 are attained by adding the smaller diameter silica 3 to improve the fluidity and the larger diameter silica 2 (having larger particle diameter compared to the fluidity improving silica) to prevent the sticking of the toner 1. Then, the sticking of the toner is prevented even in a temp. rising environment without generating image fogging, image defect or the like.</p> |
