| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toner having a small particle diameter and a narrow grain size distribution, the toner showing excellent release property at low temperature, hardly causing filming, achieving both of low-temperature fixability and heat-resistant storage property and giving high picture quality even in long-term use. <P>SOLUTION: The toner comprises toner base particles 1 containing at least a binder resin and a colorant, resin fine particles A2 having a volume average particle diameter of 10 nm to 500 nm, and resin fine particles B3 having a volume average particle diameter of 10 nm to 500 nm, and includes a layer containing the resin fine particles A2 as an outermost surface layer on the surface of the toner base particle 1, and the resin fine particles B3 formed inside the above layer. The glass transition temperature (TgB) of the resin fine particles B3 is higher than the glass transition temperature (TgC) of the binder resin. The binder resin contains at least one of a polyol having a valence of 3 or more and a polycarboxylic acid having a valence of 3 or more, by 1 mass% or more and 10 mass% or less. <P>COPYRIGHT: (C)2013,JPO&INPIT |
