Toner for electrostatic image development and method of producing the same

摘要

A toner for electrostatic image development made of a polyester resin having a spherical or generally spherical shape, which allows the use of a so-called oilless fixation system capable of fixing, without employing an anti-offset solution as a heat roller fixation system, and which also provides a developed image having excellent quality. The toner comprises a binder resin and a colorant. The flow beginning temperature Tfb of the toner is 90° C. or higher and 120° C. or lower, the T1/2 temperature exceeds 120° C. and is 160° C. or lower, and the flow ending temperature T end is 130° C. or higher and 170° C. or lower. The toner has a spherical or generally spherical shape having an average roundness of 0.97 or more. The toner can be produced by phase inversion at a low shear within a range of 0.2-5 m/second employing an added alcohol solvent.