Patent ID: 6215610
Filing Date: 2001-04-10
Classification: G11B

Abstract:
A magnetic recording/reproducing apparatus comprising:a deck including a rotating head drum, a capstan motor having a shaft, and a pinch roller disposed adjacent to said head drum, and two reel driving tables onto which a tape reel of a tape cassette having a tape is seated;a motor installed in said deck for generating power;cassette loading means for loading/unloading the tape cassette onto/from said two reel driving tables;a master gear member rotated by said motor;a main slide member having a rack gear engaged with said master gear member;tape loading means, interlocked with said main slide member, for loading the tape of said tape cassette toward said head drum;pinch roller driving means, interlocked with said main slide member, such that said pinch roller is either one of pressed against and separated from the shaft of said capstan motor, and the tape is pressingly transferred;reel driving means, interlocked with said main slide member, for selectively driving said two reel driving tables;brake means, interlocked with said main slide member, for selectively braking said two reel driving tables; andmode identifying means, interlocked with said cassette loading means, for determining a recording feasibility of the tape;wherein a cam groove of a predetermined shape is formed in said main slide member and an inadvertent erase preventing piece is formed in said tape cassette, and wherein said mode identifying means includes a first switching arm whose first end interlocks and rotates with said cam groove, a first switching device for switching an electrical signal according to the rotation of said first switching arm, a second switching arm rotatably installed on said deck, a second switching device for switching an electrical signal according to the rotation of said second switching arm, a detection lever having a first end rotatably installed on said deck and elastically biased in one direction for detecting said inadvertent erase preventing piece, and a second end rotating depending on the presence or absence of said inadvertent erase preventing piece for preventing a unilateral rotation of said second switching arm, and means for controlling an initial position of said detection lever such that said first end of said detection lever is disposed apart from the detection position of said inadvertent erase preventing piece, so that said second end of said detection lever allows the rotation of said second switching arm.