Magnetic disk recording and/or reproducing device
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsNobuyasu Teramura, Hiroshi Kobayashi
Life of this patent
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Abstract
A magnetic disk recording and/or reproducing device in which immediately before a flexible magnetic disk is located in the operative position; that is, the disk is mounted on a spindle, a spindle driving circuit is automatically energized so as to spin the spindle and after a predetermined time interval the driving circuit is automatically de-energized, whereby the step for locating and holding the disk in the operative position can be much facilitated, wear of rotating parts can be minimized and the power consumption can be reduced.
Claims4
A magnetic disk recording and/or reproducing device of the type in which a magnetic disk clamping means locates and holds a flexible magnetic disk accurately concentric with the axis of rotation of a spindle which is spinning, characterized by
- a sensor means adapted to detect the insertion of a flexible magnetic disk into said recording or reproducing device and generate an output detected signal,
- a timer means energized in response to said output detected signal from said sensor means and de-energized after a predetermined time interval, and
- a switching means adapted to be energized in response to an output signal from said timer, thereby closing and opening a drive circuit for driving a motor for spinning said spindle.
Dependencies are inferred from the claim text.