GALSS BASE FOR MAGNETIC DISK AND ITS MANUFACTURE

摘要

PURPOSE:To improve the CSS (contact start stop) performance and the head stick performance by forming highs of ruggedness being in the range of 50-700Angstrom to be at a pitch within a range of 0.1-10mum so as to reduce the friction force. CONSTITUTION:A glass base for magnetic disk is manufactured by forming minute reggedness onto the surface of a glass base and then applying them chemical surface processing thereupon. The shapes of the ruggedness manufacture in this way whose height H is in the range of 50-700Angstrom are at a pitch W of 0.1-10mum in measuring the coarseness by using a probe coarse meter so as to allow a probe whose radium is 2.5mum to scan the surface of the glass. The magnetic film is formed on the glass base processed in this way be means of the process such as sputtering, plating or vapor-deposition, the friction force is reduce to improve the CCS performance and the head stick performance.