Electrostatic image developing toner and image-forming method using the same

摘要

An electrostatic image developing toner comprising at least a binder resin and a releasant, wherein the binder resin comprises a petroleum resin and a styrene-based copolymer or styrene-based homopolymer in an amount of 5:5 to 7:3 by weight in terms of the ratio of the petroleum resin : styrene-based copolymer or styrene-based homopolymer and has the maximum molecular weight value (PL) based on the petroleum resin in a range of from 5 x 10<2> to 2 x 10<3> and the maximum molecular weight value (PH) based on the styrene-based copolymer or styrene-based homopolymer in a range of from 1 x 10<5> to 4.5 x 10<5> in the chromatogram obtained by measuring the binder resin through gel permeation chromatography and the releasant is a wax having a melt viscosity at 140 DEG C of 10<2> mPa/s (cp) or less and is added in an amount of 1 to 7 parts by weight per 100 parts by weight of the toner.