Patent ID: 7106663

Claim:
A disk recording/reproducing apparatus comprising: a magnetic head which ascends or descends between a first position proximate to a disk recording medium housed in a cartridge and a second position away from the medium; an ascending/descending control lever which controls ascent/descent of the magnetic head; a driving means which drives the ascending/descending control lever; and an ejecting operation section which couples with the ascending/descending control lever and which can move between a position where the cartridge is allowed to be ejected out of the apparatus and a position where the cartridge is disabled from being ejected in accordance with movement of the ascending/descending control lever, wherein the ejection operation section is supported in a manner rotatable on its one end with respect to the chassis of the apparatus, the ejection operation section has a guide cam which can be engaged with a driving axis provided on the ascending/descending control lever, and the guide cam is structured such that a length of movement of the ejection operation section is shorter than a length of movement of the ascending/descending control lever.