PURPOSE: To improve the accuracy of a tape loading mechanism by having such a constitution where the 2nd slide member enters forcibly between the 3rd control surface and the other side of the 1st slide member after the end part of the 1st slide member has a touch to the 1st control surface of a fixed block and then the 1st slide member is pressed to the 1st and 2nd control surfaces.

CONSTITUTION: A slide member 25 enters forcibly into a recessed part 33a of a fixed block 33 and stops when the tip of the member 25 touches the inside wall of the part 33a. While a slide member 27 enters forcibly into the part 33a with the drive of a loading gear 29. In this case, the tip of the member 27 is guided by a sloping part 33b formed on the lower surface side of the part 33a and enters forcibly more inside. Thus the tip of the member 27 pushes the lower surface side of the member 25 to the upper side to press said lower surface side to the upper surface side of the part 33a. At the same time, the tip of the member 25 is pressed to the inside wall of the part 33a by the force of a spring 28. Therefore it is possible to position the member 25 to the block 33 with no play.