| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toner binder excellent in achieving both of low temperature fixability and hot offset resistance (namely a sufficient fixing temperature range) and excellent in storage stability. <P>SOLUTION: The toner binder contains a polyester resin composition (H) which comprises: a polyester resin (A) comprising a nonlinear polyester resin (A1) having a monomer having a valence of 3 or more in a structural unit, and if necessary, a linear polyester resin (A2); and an inorganic filler (F) having an average particle diameter of 0.001 to 1.5 μm. In the resin composition, a difference in thermal conductivity between the polyester resin (A) and the inorganic filler (F) at 20°C is 25 to 350 W/m K, and the inorganic filler (F) is dispersed in the polyester resin (A). <P>COPYRIGHT: (C)2012,JPO&INPIT |
