Patent ID: 8846778
Filing Date: 2014-09-30
Classification: B41J,B41M,B42D,C09D,G07D,G09B,Y10T

Abstract:
1. A method for making a plurality of tactile marks on a security document substrate, comprising the steps: (a) printing deposits onto the security document substrate in a predetermined pattern using an ultraviolet light curable deposit material comprising: wherein the specified weight percentages of components (i)-(iii), (v) and (vi) are relative to a total weight of components (i)-(vi) combined, and the deposit material has a viscosity in the range of about 2,000 cP to 25,000 cP at 25° C.; and, (b) exposing the printed deposits to ultraviolet light to cure the printed deposits and form a plurality of tactile marks on the security document substrate wherein the tactile marks have easy-to-feel tactility for assisting the visually impaired to distinguish the printed, exposed security document substrate.