Abstract: In a driving apparatus for a magnetic head, a steel band is connected to a head carriage along first and second faces of the head carriage and operatively wound around a capstan at a side of the second face to give linear motions to the head carriage in response to rotation of the capstan. A part of the steel band is pressed by a spring into a recess formed on the first face when is perpendicular to directions of the linear motions of the head carriage.

Abstract: In a magnetic disk apparatus, when a magnetic disk cartridge (56) is insrted in a cartridge holder (47), the front edge of the cartridge pushes a pin (42) and turns a trigger lever (41) to allow a slider (32) slides on a base plate (26) towards a front panel (53) by forces of springs (39a, 39b), thereby the cartridge holder (47) is brought down on the base plate (26) and a driving roller (224a) engages in a hole (205) of the magnetic disk cartridge (56) to drive it; the apparatus having only one trigger lever (41), the insertion of the cartridge (56) is smooth.

Abstract: A magnetic disk apparatus with a driving roller to engage a hole on a metal core of a disk cartridge to thereby drive the cartridge. The shaft of the apparatus has three different diametered portions to respectively engage the spring on which the driving roller is attached and a yoke structure with a permanent magnet and the shaft hole of the metal core of the cartridge.