Tape cassette of high transparency material

摘要

In a tape cassette having sensor optical path holes provided on respective wall portions (10a to 10e) on a straight line coupling a position of a light emission element (12) with a position of a light reception element (13a) so that light from the light emission element (12) is introduced into a tape container (4) and light passing through a tape running path of the tape container (4) comes out of the tape container (4) and reaches a light reception element (13a), a light shielding member (20) having a light shielding effect is bonded around a sensor optical path hole (14c) right after the light from the light emission element (12) comes out of the tape container (4). <IMAGE>