| 摘要 |
PURPOSE:To obtain a toner which can form good images stably over a long period time and can be fixed at a high speed by specifying the values such as dynamic viscoelastic characteristics of the toner contg. a required binder resin. CONSTITUTION:The toner in which a coloring agent is dispersed and which contains the binder resin of polyester is so formed that the storage viscosity coefft. [eta(omega)] of the dynamic viscoelastic characteristic thereof is in a 1.5X10<4=eta'<=1.0X10<6> (poise) range at 95 deg.C and the mechanical dynamic loss [tandelta] is in a 1.0<=tandelta<=2.0 range at 105 deg.C. The toner which is low in fixing temp., has sufficient offset resistance, can form good visible images always stably over a long period of time, does not flocculate, has a good heat-resistant preservable property and can be fixed at a high speed is then obtd. |
