Patent ID: 6232045
Filing Date: 2001-05-15
Classification: G11B

Abstract:
A method for producing a laser writable information recording blank, said method comprising:(a) applying photoresist material to a laser writable polymer substrate;(b) exposing said photoresist through a pattern mask having a negative image of a desired track pattern;(c) developing said photoresist and removing portions thereof exposed through said mask;(d) depositing a metallic layer on said substrate;(e) forming a track pattern on said substrate, said forming comprising producing at least one edge-following edge on said substrate to edge-follow when laser writing information to said recording blank, said forming including removing remaining unexposed photoresist and metallic layer material overlying said unexposed photoresist, and whereby said track pattern defines a structure having opposing track portions defining an information storage region therebetween, said track pattern having a width x, and said information storage region a width y, wherein y>2x; and(f) applying a semitransparent encapsulant layer on the resulting substrate of step (e).