Patent ID: 8758865
Filing Date: 2014-06-24
Classification: B41M,C08F,C09D,Y10T

Abstract:
1. A method for creating an authentication image on a recording medium comprising: (a) depositing an ultraviolet curable phase change gellant ink composition directly onto a recording medium or depositing an ultraviolet curable phase change gellant ink composition onto an intermediate transfer member, to create both a tactilely non-perceptible image and a tactilely perceptible authentication image with the ultraviolet curable phase change gellant ink composition; and wherein the ultraviolet curable phase change gellant ink composition comprises a phase change ink vehicle comprising a radiation curable monomer or prepolymer; a photoinitiator; a reactive wax; a gellant; and an optional colorant; wherein the tactilely perceptible authentication image is formed by depositing successive layers of the ultraviolet curable phase change gellant ink composition directly onto the recording medium or by depositing successive layers of the ultraviolet curable phase change gellant ink composition onto the intermediate transfer member; (b) when an intermediate transfer member is used, transferring the deposited ultraviolet curable phase change gellant ink composition from the intermediate transfer member to the recording medium; and (c) curing the ultraviolet curable phase change gellant ink composition upon completion of deposition of the last of the successive layers of the tactiley perceptible authentication image upon the recording medium or after transferring the successive layers of the tactilely perceptible authentication image and the tactilely non-perceptible image from the intermediate transfer member to the recording medium.