Prerequisites for Affective Signal Processing (ASP)

A disk presser mechanism in a magnetic recording and reproducing apparatus includes a rotatable turntable, a clamp member for clamping a disk on the turntable, a clamp arm supporting the clamp member and movable toward and away from the turntable, a drive lever operatively coupled to the clamp arm, an actuator cam for pressing the drive lever to move the clamp arm in a direction to cause the clamp member to clamp the disk on the turntable, a pad holder having a pad for confronting the disk, a spring member for urging the pad to be pressed against the disk, and an engaging portion acting between the drive lever and the pad holder for moving the pad holder away from the disk when the drive lever is released by the actuator cam to unclamp the disk.