| 摘要 |
<p>PROBLEM TO BE SOLVED: To effectively suppress the filming of a toner using at least silica as an external additive on a toner support, a toner regulating member, a latent image carrier, etc. SOLUTION: The toner T has a liberation rate of matrix particles set at <=10% and a liberation rate of silica set at 0.2-10%. The fusion bonding of free matrix particles 18' and matrix particles 18 in which silica 19 has been embedded to toner contact members such as a latent image carrier, a toner carrier and a toner regulating member is suppressed, the filming of the toner T is effectively suppressed and the durability of the toner contact members is improved. Since the amount of the silica 19 is made proper, a large quantity of heat is not absorbed in the silica 19 in heat fixation. The matrix particles 18 are coated with a prescribed amount of the silica 19, the silica 19 is less liable to conduct heat to the matrix particles 18 having a low melting point and low temperature fixability is improved.</p> |
