A DISC DRIVING APPARATUS

A DISC DRIVING APPARATUS COMPRISES A MOTOR, A TURNTABLE WHICH IS ROTATED BY A DRIVING FORCE OF THE MOTOR AND SUPPORTS A DISC ON ONE SIDE THEREOF, A FIXED SUPPORTING PORTION FOR ROTATABLY SUPPORTING THE TURNTABLE, AND MAGNETIC MEANS FOR ALWAYS GENERATING A PREDETERMINED MAGNETIC ATTRACTING OR REPULSI...

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Bibliographic Details
Main Author YOSHIO CHIBA
Format Patent
LanguageEnglish
Published 31.03.1995
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:A DISC DRIVING APPARATUS COMPRISES A MOTOR, A TURNTABLE WHICH IS ROTATED BY A DRIVING FORCE OF THE MOTOR AND SUPPORTS A DISC ON ONE SIDE THEREOF, A FIXED SUPPORTING PORTION FOR ROTATABLY SUPPORTING THE TURNTABLE, AND MAGNETIC MEANS FOR ALWAYS GENERATING A PREDETERMINED MAGNETIC ATTRACTING OR REPULSIVE FORCE BETWEEN THE OTHER SIDE OF THE TURNTABLE AND THE FIXED SUPPORTING PORTION WHICH FACES THE OTHER SIDE OF THE TURNTABLE. A UNIDIRECTIONAL URGING FORCE IS ALWAYS APPLIED TO THE TURNTABLE BY THE MAGNETIC MEANS IN THE AXIAL DIRECTION, SO THAT EVEN IF AN EXTERNAL VIBRATION EXISTS, WHEN A FORCE WHICH IS APPLIED TO THE TURNTABLE BY THE VIBRATION IS EQUAL TO OR LESS THAN THE URGING FORCE, THE TURNTABLE DOES NOT MOVE IN THE AXIAL DIRECTION. THUS, THE INTERVAL BETWEEN THE DISC SUPPORTED ON THE TURNTABLE AND A PICKUP DOES NOT CHANGE BY THE VIBRATION, AND AN ERRONEOUS RECORDING OR READING OF A SIGNAL CAN BE AVOIDED. (FIG. 2)
Bibliography:Application Number: MY1919PI910140