Toner composition for electrophotography

摘要

Disclosed is a toner composition for electrophotography which comprises, as a principal component, a urethane-modified polyester resin whose loss tangent (tan (delta)) has a maximum and a minimum both falling within the range of from 0.7 to 2.5, the loss tangent being determined at 150 degrees C. and a frequency ranging from 10-2 to 10 Hz. The toner composition has excellent low temperature fixing ability and offset resistance as well as a wide range of permitted fixing temperature.