Abstract
The toners are comprised of many materials such as binder resins, colors, charged control materials, external additives and waxes. From the surge of recent environmental awareness, energy saving is requested in the field of electrophotography. Thus, the authentication system for the energy-saving product, such as product registration to International Energy Star Program is carried out positively. In electrophotographic printing device, energy saving of the fuser, which accounts for more than 70% of electricity consumption1), is very important. The wax for toner plays an important role in this fixing process. To save energy of the fuser, it is effective to hold down the temperature of the fuser. Therefore, it is effective to use low melting point wax, which promotes the softening of the polymeric product binder resins and develops a function at low temperature. On the other hand, the toner may be exposed to temperature of around 50 degrees during preservation. If a part of the wax melts when the toner is exposed at these temperature domains, troubles such as the blocking of the toner occur. I introduce high purity ester wax indicating a low melting point and sharp fusion behavior here.
