Tape cassette

摘要

A slider is provided in the cassette case body for opening and closing the recessed portion of the cassette. A spring biases the slider in a direction close to the recess. Lock members lock the slider in respective positions where the recessed portion is closed and opened. The slider has protruding parts which engage with contact parts provided in holes on the case body. When the slider is in the position of closing the recess, with the protruded portions and the contact portions are in close proximity to each other; the slider thereby stops moving in the direction of closing the recess.