MAGNETIC TAPE CASSETTE CASING

摘要

A magnetic tape cassette casing is formed of upper and lower cassette halves each of which has a rear wall portion extending in the direction of thickness of the casing. The cassette halves are mated together with the top surfaces of the rear wall portions thereof abutting against each other. The cassette casing is provided with a hole defined by recesses formed in the top surfaces of the rear wall portions of the cassette halves substantially at the center between the left and right side ends. The hole is 0.04 to 1.0 mm in width and 2 to 20 mm in length.