Apparatus and method for sensing the condition of a tape...

Details Apparatus and method for sensing the condition of a tape... Apparatus and method for sensing the condition of a tape...

G - Physics

11

B

352/21.23

G11B 15/08 (2006.01) G11B 15/66 (2006.01) G11B 15/675 (2006.01) G11B 23/04 (2006.01)

Patent

CA 1049140

APPARATUS AND METHOD FOR SENSING THE CONDITION OF A TAPE WITHIN A TAPE CASSETTE ABSTRACT OF THE DISCLOSURE A device for sensing the condition of a magnetic tape maintained within a conventional tape cassette, the tape having transparent leaders and an opaque magnetized portion. The cassette is positioned on a cradle having a loading and a record-playback position. In response to movement of the cradle to the record-playback position a casing carrying a light sensor is inserted into the cap- stan drive aperture of the cassette. The cradle carries a light source which is positioned proximate the location of the sensor with the magnetic tape located between the sensor and the light source. The sensor produces a con- trol signal in response to a change in the light transmitting characteristics of the tape. -1-

217959

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