Magnetic carrier for electrostatic latent image development

A magnetic carrier suitable for use in an electrographic developing method which effects development of an electrostatic latent image with a magnetic developer at a developing region by rotating a developing sleeve incorporating a magnet therein, thereby causing said magnetic developer, composed of an insulating toner and a magnetic carrier, to be transported to said developing region, said magnetic carrier having a weight-average particle diameter of 35 to 100 .mu.m and comprising 350 to 800 parts by weight of a fine ferrite powder having an electric resistance of at least 10.sup.7 .OMEGA..cm, and 100 parts by weight of a binder resin having a hydrophilic functional group in an amount such that the acid value or OH value of the binder resin is in the range of 5 to 250 mg KOH/g, said magnetic carrier possessing the following properties:

• (1) magnetization of 2000 to 3000 gausses in a magnetic field of 1000 oersteds, (2) coercive force of 60 to 250 oersteds, and (3) electric resistance of at least 10.sup.12 .OMEGA..cm.