PURPOSE: To finish the substrate face into a smooth face, by grinding the substrate face while floating the slider, where grinding particles are buried, above the magnetic disc substrate by the air bearing mechanism.
CONSTITUTION: Slider face 6 of grinding slider 1 which is produced by resin bond- system diamond whetstone material containing diamond of 1W2μ grain size is floated on the Al substrate similarly to the mounting mechanism of the magnetic head by the air bearing. Slider 1 is provided with gimbals fitting groove 2 and groove 3 for grinding powder exclusion. The liquid lubricant is applied to the face of Al substrate previosuly. Next, the arm is caused to descend by every minute quantity to reduce the floating quantity of slider 1 while reciprocating and seeking slider 1. When the face of slider 1 is brought into contact with the Al substrate, descending of the arm is stopped, and further, the seek operation is performed slowly. The contact between the Al substrate and slider 1 is detected by an acoustic- electric conversion element to stop automatically descending of the arm.
NAKAYAMA JIROU
MATSUMOTO HISASHI
