Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1988-09-08
1990-06-19
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 554
Patent
active
049358316
ABSTRACT:
A tape cassette drive apparatus is provided with a fly pulley coaxial with a capstan shaft and a fixedly positioned gear is provided coaxially with the fly pulley and secured to move with the pulley. A rotary bar which is capable of rotating about the axis of the capstan shaft and which is provided with an idle gear driven from the fixedly positioned gear and which carries a projection are also provided. The idle gear meshes with an internal gear portion formed coaxially to the capstan shaft while being driven by the fixedly positioned gear of the fly pulley, and the idle gear rotates about the capstan shaft at the same time. The rotary movement of the projection of the idle gear mounted to the rotary bar causes a playback arm movably supported on the body plate to rotate. The playback arm has a projection and a recess portion which permit a head base to move towards and then away from a tape surface. The playback arm and the head base constitute a lock mechanism which locks the head base where it is moved by cooperation between the projection and the recessed portion of the playback arm. Also included is a review arm disposed to face the playback arm in a symmetrical fashion with respect to a plane normal to axis of the capstan shaft thus providing high speed erasing in the device.
Emu II SHII Co. Ltd.
Wolff John H.
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