An electromagnetic drive causes a cantilever of a probe-based instrument to deform flexurally by transmitting a high frequency AC signal through an electromagnetic actuator located in the vicinity of the cantilever. The LED light source is electrically connected to a conductive bus bar, and forms a light-emitting surface at a position opposite the front cover. The exchange-coupled magnetic multi-layer structure includes a recording layer configured to record information and an assisting layer having a lower anisotropy than the recording layer. The content is processed according to the determined processing information and a product is generated using the corrected product expression model.