Patent ID: 6090515
Filing Date: 2000-07-18
Classification: G03G

Abstract:
A toner for developing electrostatic images, comprising:(a) a binder resin,(b) a long-chain alkyl compound represented by the following formula (1): ##STR12## wherein x denotes an average value in the range of 35-150; and (c) an azo iron complex compound represented by the following formula (4); ##STR13## wherein X.sub.1 and X.sub.2 independently denote hydrogen atom, lower alkyl group, lower alkoxy group, nitro group or halogen atom; m and m' denote an integer of 1-3; R.sub.1 and R.sub.3 independently denote hydrogen atom, C.sub.1-18 alkyl or alkenyl, sulfonamide, mesyl, sulfonic acid group, carboxy ester group, hydroxy, C.sub.1-18 alkoxy, acetylamino, benzoylamino or halogen atom, n and n' denote an integer of 1-3; R.sub.2 and R.sub.4 denote hydrogen atom or nitro group; A.sup.+ denotes a cation including 75-98 mol. % of ammonium ion and another ion selected from the group consisting of hydrogen ion, sodium ion, potassium ion and mixtures thereof; and wherein the long-chain alkyl compound is contained in an amount of 0.5-20 wt. parts per 100 wt. parts of the binder resin and the azo iron complex compound is contained in an amount of 0.1-10 wt. parts per 100 wt. parts of the binder resin.