Administration of storage space requirements on personal video recorders, including recording a show having a storage space requirement, and incrementing the show’s storage space requirement. The chamber comprises a transparent window. By the wiping operation of the recording head, a waste ink sticking to the wiping member is wiped away by the wiper cleaner with the fall of the wiping member and is removed from the wiping member. The first reference surface has an average height of the surface of the surface coating layer. Specifically, the resolution reducer reduces the resolution of a high resolution signal to generate a low resolution signal. The method also includes interrogating one or more RFID tags positioned along the rail track and determining, using the processor, a fixed location associated with each of the one or more RFID tags.