Structure and identification device for magnetizing two coercive magnetic materials

摘要: Disclosed are a structure and an identification device for magnetizing two coercive magnetic materials. The comprises upper permanent magnet lower magnet, the magnets not parallel to each other provide horizontal fields different in direction field strength order sequentially magnetize materials, materials both magnetized by large field, small only magnetizes material coercivity. forms stable between printing passing is stably even when floating up down degrees, accordingly problem of poor saturation magnetization caused banknote floats during moving solved, amplitude stability signals guaranteed.