| 摘要 |
PURPOSE:To render each of resistances to blocking and offset and low temperature fixability satisfactory at the same time by using a combination of a specified nonlinear high molecular weight polyester resin and a nonlinear low molecular weight polyester resin as a binder resin. CONSTITUTION:The composition to be used as the binder resin is a combination of the nonlinear high molecular weight polyester having a weight average molecular weight of >=50,000 and a multidispersion degree Mw/Mn of >=20, and the nonlinear low molecular weight polyester resin having a number average molecular weight of 1,000-5,000 and an Mw/Mn of <=4, thus permitting all of the performances of the blocking and offset resistances and low temperature fixability to become satisfactory at the same time in a good balance and the obtained toner composition to be especially suitable for high-speed copying machines. |
