Minolta Camera Kabushiki Kaisha

Eiji Iwasa

Noboru Ito

A magnetic carrier is disclosed which is for use in 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 the aforementioned magnetic developer composed of an insulating toner and a magnetic carrier to be transported to the aforementioned developing region. This magnetic carrier is composed preponderantly of fine magnetic powder and binder resin and is possessed of specific properties, i.e. 2000 to 3000 gasses of magentization in a magnetic field of 1000 oersteds, 60 to 250 oersteds of coercive force, and not less than 10.sup.12 .OMEGA..cm of electric resistance.

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Takarazuka, Japan

Eiji Iwasa