Patent ID: 9148546
Filing Date: 2015-09-29
Classification: B41J,B41M,H04N

Abstract:
1. A method for rendering an infrared image pattern on a recording medium having a first color, comprising: (a) electronically creating a first electronic pattern ink, said first electronic pattern ink including a second color and including holes, said holes representing areas in said first electronic pattern ink wherein said second color is absent; (b) electronically creating an electronic image region having a pattern; (c) electronically painting, using said first electronic pattern ink, a background of electronic image region and said pattern of said electronic image region; (d) electronically painting a predetermined portion of said holes within said electronic image region with a third color, said third color being equal to the first color but having opposite infrared properties; and (e) rendering, using marking materials, said electronic image region on the recording medium such that said recording medium is only visible through said holes not painted with said third color when viewing the recording medium using infrared illumination and such that said electronic image region is visible when a relative angle between an observer's viewing angle and an angle of illuminating the recording medium by an illumination source is a first angle, said electronic image region not having said predetermined portion of said holes painted with said second color being not visible when the relative angle between the observer's viewing angle and the angle of illuminating the recording medium by the illumination source is a second angle, said second angle being not equal to said first angle.