Track position detecting mechanism

Details Track position detecting mechanism Track position detecting mechanism

1991-01-03

1993-01-05

Smith, Jerry

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7811, 360105, G11B 554, G11B 555

Patent

active

051776480

ABSTRACT:
A track position detecting mechanism is used to detect an outermost peripheral track position of a magnetic disc for use as a reference point in making various accesses to the magnetic disc. The track position detecting mechanism has an optical detector including a light emitting element and a light receiving element, where an optical path is formed between the light emitting element and the light receiving element, and an interrupt member provided at such a position on a carriage that the interrupt member interrupts the optical path within the optical detector when a magnetic head is located at an outermost peripheral track position on the magnetic disc. The optical path substantially coincides with a plane which includes a center line of a guide shaft which guides the carriage, and the plane is parallel to a base of the carriage.

REFERENCES:
patent: 4359763 (1983-11-01), Hoffman
patent: 4627043 (1986-12-01), Uehara
patent: 4737867 (1988-04-01), Ishikawa et al.
patent: 4750063 (1988-06-01), Kume et al.
patent: 4758909 (1988-07-01), Harase
patent: 4780778 (1988-10-01), Gunji et al.
patent: 4873598 (1989-10-01), Negishi et al.
patent: 4943876 (1990-07-01), Kawahara

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