Belt driven tape running apparatus with after shock protection.

摘要

A pair of reel bases mounts a tape cassette in which a tape to be run is wound. A rotating member (16) is rotatable provided between the pair of reel bases. A belt driving mechanism has a belt (25) for transmitting a rotational force from a driving source to the rotating member. A tape running unit has first and second rotation transmission members (21, 24) provided to be rotatable coaxially with the rotating member (16) and to be brought into contact with/separated from one of the pair of reel bases in correspondence with a rotational direction of the rotating member (16). The first and second rotation transmission members (21, 24) are engaged with each other with a predetermined gap in a circumferential direction therebetween to transmit a rotational force. The predetermined gap is set to have a sufficient size for absorbing backward rotation of the rotating member (16) caused by an after shock of the belt (25) produced upon stop of the tape, thereby preventing backward rotation of the reel bases.