HEAD POSITIONING MECHANISM IN MAGNETIC DISK STORAGE DEVICE

PURPOSE:To attain high speed accessing by providing the 1st head positioning actuator using a stepping motor as a drive source and the 2nd head positioning actuator mounted on the 1st actuator and using a piezoelectric substance as its drive source. CONSTITUTION:The 2nd head positioning actuator 2 e...

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Bibliographic Details
Main Authors KONISHI HIROSHI, KANO TOSHIYUKI, TSUKADA MITSUYOSHI
Format Patent
LanguageEnglish
Published 01.03.1988
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE:To attain high speed accessing by providing the 1st head positioning actuator using a stepping motor as a drive source and the 2nd head positioning actuator mounted on the 1st actuator and using a piezoelectric substance as its drive source. CONSTITUTION:The 2nd head positioning actuator 2 exclusive for microstep is mounted on a swing arm 1 being a component of the 1st head positioning actuator. The 2nd head positioning actuator 2 consists of an asymmetrical bimorph 3 and an Eden spring extension mechanism 4. When a tip of the asymmetrical bimorph 3 is deflected to a fixed edge, the quantity of deflection is expanded by the Eden spring expansion mechanism 4 without friction and play and a head assembly 13 fixed by a screw 10 via a spacer 9 is moved nearly straightforward in a direction of arrow. Thus, the linear movement of the head assembly 13 causes each head to be moved straightforward simultaneously.
Bibliography:Application Number: JP19860192490