Dynamic magnetic information storage or retrieval – Head – Head accessory
Patent
1996-05-08
1997-07-08
Wolff, John H.
Dynamic magnetic information storage or retrieval
Head
Head accessory
36013021, G11B 1560
Patent
active
056468067
ABSTRACT:
A sloping tape guide is provided for an arcuately scanning tape drive so that tension per unit width of a magnetic tape is equalized in the head/tape contact zone on a front face of a head assembly of the arcuate scanner. The tape wraps over the circular edge of the magnetic head assembly. As a consequence, the tension per unit width is higher at the center of the tape that at the edges. The low tension at the edges of the tape results in poor head to tape contact in these regions and consequently unacceptable signal performance. This invention overcomes these difficulties by providing a means to equalize tension per unit width across the tape. The sloping tape guide has a front sloping flat surface which is bounded by top and bottom edges and first and second side edges, the first side edge being closer to the lat surface slopes rearwardly from its first edge to its second edge away from the periphery of the head assembly. The second edge is concave so that top and bottom edge portions of the sloping surface have a longer path length than a center portion of the sloping surface. By wrapping the tape around the second edge, the top and bottom edge portions of the magnetic tape traverse a longer tape path length than the middle portion of the magnetic tape thereby increasing tension per unit width at the edge portions of the tape as the tape makes transducing contact with the magnetic heads scanning across the width of the tape. Deadband portions at top and bottom edges of the tape are thereby eliminated to increase the efficiency of the arcuate scanner.
REFERENCES:
patent: 2750449 (1956-06-01), Thompson et al.
patent: 2772328 (1956-11-01), Lyon
patent: 2859973 (1958-11-01), Runge
patent: 2924668 (1960-02-01), Hoshino et al.
patent: 2941741 (1960-06-01), Bilsback
patent: 3320371 (1967-05-01), Bach
patent: 3692255 (1972-09-01), Von Behren
patent: 3735939 (1973-05-01), Inaga
patent: 3900172 (1975-08-01), Kamaya
patent: 3972074 (1976-07-01), Vogel
patent: 3980255 (1976-09-01), Serizawa
patent: 4012793 (1977-03-01), Blanding
patent: 4249222 (1981-02-01), Iwasaki
patent: 4833556 (1989-05-01), Kosarko et al.
patent: 5010432 (1991-04-01), Fukushima et al.
patent: 5062020 (1991-10-01), Osanai
patent: 5175660 (1992-12-01), Mitsuhashi et al.
patent: 5191497 (1993-03-01), Saito et al.
patent: 5289330 (1994-02-01), Wade
E. Autino et al., "Compatibility of Silicon Planar Heads with Conventional Thin Film Heads in Hard Disk Drives," IEEE Transactions on Magnetics, vol. 28, No. 5, Sep., pp. 2124-2126, 1992.
J. Lazzari et al., "A New Thin Film Head Generation IC Head," IEEE Transactions on Magnetics, vol. 25, No. 5, Sep., 1989.
Crosby James
Griffith Neil J.
Lemke James U.
Minnesota Mining and Manufacturing Company
Wolff John H.
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