Magnetic recording and reproducing apparatus

摘要

The invention presents a magnetic recording and reproducing apparatus capable of reducing the size and preventing external force from propagating directly to the internal mechanism. To achieve the object, a main arm 26 and a sub-arm 29 are constituted so as not to intersect with a photo detector 31 always during rotating operation within a plane including the photo detector 31, and the dimension can be hence reduced in the width direction of the apparatus, and moreover as the wall thickness of MIC-SW 46 is reduced, the upper end of the MIC-SW 46 is held by a back plate 48, so that the dimension of the apparatus can be reduced also in the depth direction, and further a cassette holder 13 is locked by a damper 42 to prevent effects from outside when a sub-chassis 19 moves from unloading position to loading position.