Patent ID: 6732641
Filing Date: 2004-05-11
Classification: B41M,G09F

Abstract:
A method for providing an image for display by an illuminated display device having a generally clear image-bearing medium and a base containing an illumination source and positioning the image-bearing medium in proximity with the illumination source, whereby light from the illumination source is propagated through the image-bearing medium, comprising the steps of:providing an electronic image; converting the electronic image into a halftone black and white electronic image, wherein substantially achromatic colors of greatest lightness of the electronic image are represented by white in the halftone black and white electronic image, substantially achromatic colors of least lightness of the electronic image are represented by black in the halftone black and white electronic image, chromatic colors of the electronic image are represented by corresponding halftones in the halftone black and white electronic image; inverting the halftone black and white electronic image to create an inverted halftone electronic image, wherein white of the halftone black and white electronic image is represented by black in the inverted halftone electronic image, black of the halftone black and white electronic image is represented by white in the inverted halftone electronic image, halftone of the halftone black and white electronic image is represented by a corresponding inverted halftone in the inverted halftone electronic image; producing a film positive of the inverted halftone electronic image; producing a silk screen from the film positive, wherein black of the film positive is represented by a pervious printing area of the silk screen, white of the film positive is represented by an impervious nonprinting area of the silk screen, halftone of the film positive is represented by a correspondingly partially pervious printing area of the silk screen; and silk-screening the silk screen onto the image-bearing medium by using a mixture of at least one clear-matt ink and at least one white ink.