Magnetic head and disc tester employing pivot arm on linearly movable slide

A magnetic disc and head tester for moving a magnetic head having a longitudinal axis across a magnetic disc having concentric tracks, including an outer track and an inner track, said tester comprising:

• a stationary base and means on said base for supporting and rotating said magnetic disc;
• means for moving said magnetic head linearly with respect to said magnetic disc;
• means, on said means for moving said magnetic head linearly, for moving said magnetic head in an arc which is parallel to said magnetic disc and which traverses said tracks of said disc,
• means for measuring the angular position of said longitudinal axis of said magnetic head with respect to a tangent to a given one of said tracks on said disc;
• and
• means for measuring a parameter of one of said magnetic head and said magnetic disc when said magnetic head is moved by said means for moving said head linearly with respect to and disc.

A magnetic disc and head tester for testing parameters of a magnetic head having a longitudinal axis and a magnetic disc having concentric tracks between an outer track and an inner track thereof, comprising:

• a stationary base;
• a slide mechanism fixed to said stationary base;
• a slide linearly moveable in said slide mechanism;
• means for linearly moving said slide in said slide mechanism;
• an arm pivotally installed on said slide and carrying said magnetic head, such that said magnetic head is positioned over one of said tracks of said disc, and such that said longitudinal axis of said magnetic head makes an angle with a tangent to said one track on said disc;
• an angular scale on said slide mechanism and a pointer on said arm for measuring said angle between said longitudinal axis of said magnetic head and said tangent to said one track on said disc;
• and
• means for measuring a parameter of at least one of said magnetic head and said magnetic disc when said magnetic head is moved by said means for linearly moving said slide mechanism with respect to said disc.

A magnetic head tester for testing the parameters of a magnetic head having a longitudinal axis and a magnetic disc having concentric tracks between an outer track and an inner track on said disc, comprising:

• a stationary base;
• linear movement means for moving said magnetic head linearly with respect to said magnetic disc;
• arc means for moving said magnetic head in an arc across said tracks on said disc, said arc means being mounted on said linear movement means;
• angle means for measuring an angular position of said longitudinal axis of said magnetic head with respect to a tangent to a given track on said disc;
• measuring means for measuring a parameter of one of said magnetic head and said magnetic disc when said magnetic head is moved by said linear movement means, said linear movement means comprising a slide mechanism fixed to said stationary base, and said arc means comprising an arm pivotally installed on said slide mechanism, said slide mechanism comprising a guide, a slide linearly moveable in said guide, and a drive unit for side movement of said slide, said drive unit comprising a stepper motor installed on said slide mechanism and having an output shaft connected to a lead screw, and a nut attached to said slide and engaging said lead screw, so that rotation of said stepper motor is converted through said engagement into said linear motion of said slide.