PURPOSE: To prevent the formation of toner scum on the surface of a carrier over a long useful life of a developer while ensuring fixability at low temp. and to stably maintain the resistance of the carrier and the amt. of electric charges.

CONSTITUTION: In an electrostatic charge image developer compsn. consisting of a toner and a carrier made of porous amorphous iron powder with a rugged surface part, the bonding resin of the toner is based on polyester resins and fatty acid and/or its metallic salt is incorporated into the toner by 0.1-5.0 pts.wt. per 100 pts.wt. of the bonding resin by melting and kneading. The objective electrostatic charge image developer compsn. is obtd.