G - Physics – 11 – B
Patent
G - Physics
11
B
352/10
G11B 15/60 (2006.01) G11B 15/61 (2006.01)
Patent
CA 1157558
PHN 9522 28 ABSTRACT: In a helical-scan video recorder a plurality of magnetic heads rotate past a magnetic tape which is guided along a substantially helical path round a tape guide member by a tape-supporting edge, the tape being transversely loaded in the direction of the tape-support- ing edge with the aid of pressure members. The tape- supporting edge has a convex curvature with a peak sub- stantially midway between a tape-support entry point and a tape-support exit point, the curvature at the peak having a smaller radius than the curvature in the remain- ing part of the tape-supporting edge. The pressure mem- bers are situated beyond the ends of the tape-supporting edge and the magnetic tape is curved over the tape- supporting edge in the plane of the magnetic tape in conformity with the convex curvature of the tape-support- ing edge, so that the magnetic tape is pressed against the tape-supporting edge with a transverse force which is at least approximately constant per unit of length.
355361
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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