An imaging device capable of preventing the imaging device from becoming unusable due to the battery running out or a lack of storage capacity in the storage medium, by performing battery charge and data transfer in a limited period of time. In one embodiment, a sensor includes at least one magnetosensitive element, and a magnetic body with an opening, the magnetic body comprising magnetic material, the magnetic body having inclined surface sections shaped by the opening, wherein the sensor is arranged within the opening such that the magnetosensitive element is in lateral directions bounded by the inclined surface sections. The second region has a lower emissivity of thermal radiation than that of the first region. The breaker is formed into a plate shape having an insertion hole through which the attaching screw is inserted to tighten the breaker together with the cutter by an attaching screw.