The invention provides a recording medium capable of inhibiting occurrence of undertrapping, lowering the visibility of scratches on the outermost surface of the recording medium and inhibiting occurrence of a mottled pattern when recording is conducted. Additionally, the structure of the lubricating apparatus is simplified and configures an electronic timepiece that can use the bearing-less stator. The digital input signal may, for example, comprise a digital dither signal or other processor control signal. The first and second real memory portions may be selected by the memory controller. The telescoping shield will move toward the fully extended position when the retaining member is disengaged from the telescoping shield following removal of the collection tube from the needle holder.