A wheel hub drive for a running wheel is described. The shower bath apparatus comprises a shower bath apparatus body, a seat, on which a bathing person is seated, a spray nozzle for jetting hot water to the bathing person, and an arm provided with at least one spray nozzle. The printer driver receives designation of an e-mail address managed by the server device, identifies printer A based on the designated e-mail address, and converts data as a target of printing into print job data in accordance with the identified printer A.