摘要 |
PROBLEM TO BE SOLVED: To decrease the noise level of tape squeaking of a rotating drum. SOLUTION: In a rotating drum, an upper cylinder 5, whose lower surface mounts a magnetic head 3 and around which a magnetic tape 6 is wound, is freely rotatably mounted over a lower cylinder 7 fixed to a chassis 1 and a clearance 4 into which the magnetic head 3 is exposed is provided between the upper cylinder 5 and the lower cylinder 7. A taper part 50 inclined to the inside of the peripheral surface of the upper cylinder 5 is formed in the angle part 53 being in contact with the magnetic tape 6 at the lower end of the upper cylinder 5 and the tip of the magnetic head 3 is recessed by >=0μm and <20μm from the peripheral surface of the upper cylinder 5. The lower end (a) of the taper part 50 is located inside the tip of the magnetic head 3.
|