Patent ID: 6497983
Filing Date: 2002-12-24
Classification: G03G

Abstract:
A toner binder for electrophotography wherein when the viscoelasticity of said toner binder is measured in the temperature range of 50 to 200Â° C. and at a heating rate of 2Â° C./min., the viscoelasticity curve in the temperature range of 100 to 200Â° C. showing the relationship between the storage modulus and temperature, in which curve the axis of ordinate is the logarithm (Pa) of storage modulus Gâ€² and the axis of abscissa is temperature (Â° C.), has a concave in the temperature range of 140Â° C. to 180Â° C. and has a minimum value of storage modulus Gâ€² at the bottom of the range, and this Gâ€² 0 and the storage modulus Gâ€² 200 at 200Â° C. have a relationship of Gâ€² 0