Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1989-03-29
1990-12-11
Wolff, John H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360137, 360 744, 242204, G11B 1548
Patent
active
049774670
ABSTRACT:
According to a magnetic tape high-speed braking apparatus, a cam groove for setting various operation modes is formed in a cam gear. A high-speed mode such as a high-speed search is set on the cam gear at that portion thereof which corresponds to an end portion of a loading state. When a loading motor rotates in a predetermined loading direction, a worm gear is rotated in a first direction via pulleys, a belt and gears. In high-speed search mode, a cam pin of a cam lever engaged with the cam gear is fixed to a recess of a rotatable lock lever. When a tape end is detected and the cam gear rotates in a direction opposite to the first direction, the cam pin is separated from the recess by a projection of worm gear member, a lock release lever and a spring. Accordingly, the cam lever, a brake connector, a brake switching lever and a brake slider are actuated to press brake shoes of main brakes abutting on the brake slider, against a feed reel stand and a take-up reel stand, thereby instantaneously braking these reel stands.
REFERENCES:
patent: 4500049 (1985-02-01), Sugihara
patent: 4807061 (1989-02-01), Yoon
patent: 4899951 (1990-02-01), Okada et al.
Garcia Alfonso
Kabushiki Kaisha Toshiba
Wolff John H.
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