PURPOSE: To hold small load variation of a motor and to set a horizontal transfer distance much longer than a vertical transfer distance, by performing smoothly horizontal transfer and vertical transfer.

CONSTITUTION: An L-shaped cassette holder transfer member 14 is fitted in a chassis 11 to slide forward and backward freely. Further, a pinion 19a meshes a rack 14a united with the cassette holder transfer member 14. When the pinion 19a rotates and the cassette holder transfer member 14 is moved to a rearmost part, the wide-width groove 14b of the cassette holder transfer member 14 is superposed on the longitudinal direction of the bent groove 11a of the chassis 11 accurately. Further, sprockets or pulleys 16W21 are held in the same plane with proper spacers between. A chain 22 is extended among those sprockets and pulleys.