| 摘要 |
<p>In a magnetic-tape-cassette apparatus (1) comprising a magnetic-head unit (14) carried by a head-mounting plate (7) a magnetic head (9) is mounted in a head mount (16) which comprises two tape guides (34, 35) with cylindrically convexly curved guide surfaces (36, 37) on opposite sides of the magnetic head. At one axial end each guide surface adjoins an associated height limiter (38, 39), the height limiters being so arranged that a line tangential to the guide surfaces at the junctions between these surfaces and the height limiters extends perpendicularly to a median plane through the air gap (29) of the magnetic head (9). At the other axial end each guide surface (36, 37) adjoins a tape-edge-positioning control surface (40, 41) which is inclined with respect to the axis of curvature of the respective guide surface, the control surfaces (40, 41), the guide surfaces (36, 37) and the height limiters (38, 39) forming an integral unit with the head mount (16).</p> |
