Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism
Patent
1979-11-16
1982-03-02
Wolff, John H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
360723, 360 741, 360 966, 360105, G11B 1518, G11B 1902
Patent
active
043181384
ABSTRACT:
A capstan shaft is disposed in the center, and 4-track 2-channel heads are arranged on a single rotatable head-supporting board in positions at equal distances from the rotation center of the head-supporting board. At time of tape end detection or programming (manual reverse), the head-supporting board is rotated to extrude and retract the heads on the upper- and lower-course sides of the center capstan, respectively, so that only the upper-course-side head may be brought into contact with a tape face. Naturally, in such construction, there is no need of 4-channel heads, and steady tape run can be obtained because the upper-course-side head is always in contact with the tape face in both forward and reverse operations.
REFERENCES:
patent: 3571524 (1971-03-01), Kozu et al.
patent: 3810241 (1974-05-01), Murata
IBM/TDB, vol. 20, No. 2, Jul. 1977, pp. 706-707, "Magnetic Head Advance and Retraction Mechanism"by Kirkseg.
Olympus Optical Co,. Ltd.
Wolff John H.
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