Magnetic head installed on a rotary drum and method for adjustin

Details Magnetic head installed on a rotary drum and method for adjustin Magnetic head installed on a rotary drum and method for adjustin

1995-04-28

1996-07-16

Heinz, A. Jo

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 75, G11B 556, G11B 2102

Patent

active

055372767

ABSTRACT:
A head height adjustment method is for adjusting the height of a magnetic head chip fixed to a free end of an elongated head base extending from a rotary drum. The elongated head base has an intermediate portion bent at first and second restricted areas. A laser beam is emitted on one surface of the elongated head base for bending the elongated head base at the first restricted area to enfold along the first restricted area. Another laser beam is emitted on another surface of the elongated head base, off alignment from said first restricted area, for bending the elongated head base at the second restricted area to enfold along the second restricted area. Thus, opposite end portions of the elongated head base extend parallel to each other, but at different levels.

REFERENCES:
patent: 4203140 (1980-05-01), Watanabe
patent: 4814908 (1989-03-01), Schmitz
patent: 5065267 (1991-11-01), Yohda
patent: 5099373 (1992-03-01), Shibata et al.
patent: 5256850 (1993-10-01), Maegawa et al.
patent: 5303108 (1994-04-01), Higashionji et al.
patent: 5341256 (1994-08-01), Murata et al.
patent: 5347415 (1994-09-01), Murata et al.
Proceedings of LAMP '87, Osaka (May, 1987), "Laser Forming of Metals and Alloys" Yoshihara Namba, pp. 601-606.
Rikohgaku-sha, "Welding Engineering", First Edition, May 11, 1989, with summary and translation of pp. 80-84.

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