Patent ID: 7666579
Filing Date: 2010-02-23
Classification: B82Y,G03F

Abstract:
1. A method for defining archival data on an archival material comprising the steps of: providing a blank permafiche substrate comprising an archival substrate formed of a material selected from the group consisting of pure nickel or pure nickel embedded with fine diamond powder, and a photoresist layer over the archival substrate; exposing portions of the photoresist layer to directed energy only at predefined pixel locations corresponding to a reduced image of an analog data; removing either the exposed portions or the unexposed portions of the photoresist, termed removed portions of the photoresist, to thereby uncover corresponding portions of the archival substrate located beneath the removed portions of the photoresist; etching the uncovered corresponding portions of the archival substrate to form an etched pattern in the archival substrate corresponding to the image of the analog data; and removing the photoresist layer.