Disc recording and/or reproducing apparatus having a disc cassette loading/discharging mechanism with a lock member responsive to a cassette insertion to unlock a sliding member
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Nov 3, 1998
Issued Date -
N/A
app pub date -
Oct 8, 1996
filing date -
Apr 29, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic disc recording and/or reproducing apparatus in which a magnetic disc cassette containing a magnetic disc provided with a center hub is loaded so that the center hub engages with a rotary shaft of a disc rotating motor to rotate the magnetic disc. A cam for displacing a magnetic head is fitted to the outer periphery of a boss supporting a bearing which supports rotatably the rotary shaft, so that the force from the cam can be transmitted to the magnetic head through a bearing utilizing the rotational movement having a high transmission efficiency. As a result, a pulse motor for displacing the magnetic head can be made compact in size and light in weight and the power consumption of the pulse motor can be reduced. The cam is interposed between the level of the magnetic head and the chassis and the rotary shaft of the disc rotating motor is used also as the rotation center for the cam via a bearing mechanism, so that the magnetic head can access any position. As a result, a positioning mechanism can be disposed in a small space, so that the magnetic disc recording and/or reproducing apparatus can be made compact in size and light in weight.
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