| 摘要 |
PURPOSE:To obtain a toner which has low-temp. fixability and good offset resistance by specifying the storage viscosity coefficient of the dynamic viscoelastic characteristic of a toner to a specific range. CONSTITUTION:The binder of the toner for electrophotographic development prepd. by dispersing a coloring agent in the binder resin is a polyester resin and the storage viscosity coefficient [eta<->(omega)] of the dynamic viscoelastic characteristic of the toner is in the 1.5X10<4>-1.0X10<6> (poise) range when the temp. is 95 deg.C. The toner which has a low fixing temp., has the sufficient offset resistance, is capable of forming good images always stable over a long period of time, does not flocculate, has a good heat-resistant preservable property and permits high-speed fixing is thereby obtd. |
