Patent ID: 6096385
Filing Date: 2000-08-01
Classification: G11B,Y10S

Abstract:
A process for making magnetic disks comprising the steps of:(a) forming a magnetic recording layer on a substrate;(b) forming a protective overcoat on said magnetic recording layer;(c) forming a lubricant layer of uniform thickness on said protective overcoat; and(d) while maintaining the thickness of said lubricant layer uniform, subjecting said lubricant layer to a masked UV irradiation to cause at least a portion of lubricant molecules in said lubricant layer to be bonded to said protective overcoat;(e) wherein said mask UV irradiation is structured to have a higher light transmissivity in its outer zone than its inner zone so as to cause a greater number of the lubricant molecules per unit area to be bonded to said protective overcoat in an outer zone of said lubricant layer than in an inner zone.