Laser Zone Texturing on Glass And Glass-ceramic Substrates

Development and implementation of laser zone texture is one of the key advancements in magnetic media technology to meet current and future challenge for ever higher areal density discs, Laser texturing process is clean and low-cost, and requires no expendable, such as abrasives or tapes. More importantly, it offers an unparalleled texturing technique to create much precise and controllable surface topography, which are critical to the creation of low glide and low stiction media. One other major advantage of laser texturing is in its ability for precision zone placement. Therefore, surface topography optimization can be achieved in the landing zone and the data zone separately.