In the succeeding step 62, if the data area of the RAM 13 is an area designated by the counter ECNT; that is, if ECNT=1, tape speed data TPSP is read from the area A2 of the areas A1 to A6, and these data TPSP are supplied to the tape speed controller 4 in the step 63 to set the controller 4 to a corresponding tape speed.