Positioning mechanism for a transducer in a multitrack magnetic

Details Positioning mechanism for a transducer in a multitrack magnetic Positioning mechanism for a transducer in a multitrack magnetic

1986-12-22

1988-10-18

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 75, 360109, 74 8915, G11B 555, G11B 2112

Patent

active

047791497

ABSTRACT:
A stepper motor is coupled via a motion translating mechanism to a transducer for transporting the latter across parallel tracks on a magnetic tape. The transducer has an abutment secured thereto. Rotatable about an axis parallel to the direction of transducer movement relative to the magnetic tape, a rotary stop member is geared to the stepper motor thereby to be driven in synchronism with the linear travel of the transducer. The rotary stop member has a stop arm protruding therefrom for engaging the abutment on the transducer when the latter moves to a limit position on one side of the tracks on the magnetic tape, thereby locking the stepper motor against rotation in one direction via the gearing. Preferably, the stop member has another stop arm engageable with the abutment when the transducer reaches another limit position on the other side of the tape tracks, with the consequent locking of the stepper motor against rotation in the other direction. An electronic control circuit can be incorporated with the head positioning mechanism for automatically initializing the position of the transducer on a home track on the magnetic tape.

REFERENCES:
patent: 3809827 (1974-05-01), Oyaba
patent: 4097908 (1978-06-01), Chou et al.
patent: 4333116 (1982-06-01), Schoettle et al.
patent: 4394696 (1983-07-01), Yoshimaru
patent: 4717978 (1988-01-01), Ichinose

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