DEVELOPING ROLLER, DEVELOPING DEVICE AND IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a developing roller, a developing device and an image forming device, which can reduce adverse influence exerted on developing characteristic by eliminating the weld of a magnet block. SOLUTION: The magnet block 20 consisting of a rare earth magnet of anisotropic magnetic powder is injection-molded by using a molding die in which a gate 23 extending over almost entire length in a longitudinal direction is arranged.