| 摘要 |
PURPOSE:To obtain a positively triboelectrifiable toner good in high-speed fixability by using a heat roll fixing system and a toner binder resin contg. a polyester resin, a lactone modified epoxy resin. CONSTITUTION:The positively triboelectrifiable toner contains the binder resin, a colorant, and a triboelectrification controller, and the binder resin contains a (5-75):(95-25) weight ratio mixture of polyester resin and lactone modified epoxy resin having a softening point of 90-130 deg.C, thus permitting the obtained toner to be positively triboelectrifiable and improved in fixability and offset resistance, and not detriorated in storage stability. |
