LIFE TESTER OF MAGNETIC DISK AND HEAD

摘要

PURPOSE:To make a test method similar to an actual situation for both magnetic disk and head by using a vibration hitting head which secures a contact between a magnetic disk and a magnetic head and a measuring head for electrical characteristics which detects automatically the generation of contact flaws and the progressing situation. CONSTITUTION:A vibration hitting head 3 or a magnetic disk 2 are oscillated by an oscillating mechanism 5 for head 3 or an oscillating mechanism 6 for magnetic disk 2 while the disk 2 is revolved in a high speed. Then the lifetime is measured for the head 3 and the disk 2 when a contact is given between them. The characteristics of the head 3 are evaluated by scanning a reference track 11 on the surface of the disk 2 by a scanning mechanism 7 for the head 3 to measure the electrical characteristics of the track 11 and comparing them with the initial electrical characteristics of the head 3 through an electrical characteristic processing part 8. While the characteristics of the disk 2 are evaluated by measuring the electrical characteristics of a contact area 12 of the disk 2 and comparing them with the initial electrical characteristics of the disk 2 through the part 8.