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US 5,856,735 AGranted
Recording and reproduction apparatus
AssigneeAlps Electric Co., Ltd.
InventorMitsunori Sakashita
Life of this patent
Estimating the term…
Abstract
A riving current supply device for driving a stepping motor in micro steps supplies a driving current to the stepping motor for a predetermined time for each micro step, and after an elapse of this predetermined time, the driving circuit supplies a current which is smaller than the driving current and which generates a torque larger than the detent torque of the stepping motor.
Claims4
A recording and reproduction apparatus, comprising:
- a stepping motor for moving a head in a radial direction of a disk, and driving current supply means for supplying a driving current for driving said stepping motor in micro steps, wherein said driving current supply means supplies said driving current to said stepping motor for a predetermined time for each micro step, and supplies an electric current which is smaller than said driving current and which generates a torque larger than a detent torque of said stepping motor after an elapse of said predetermined time.
Dependencies are inferred from the claim text.