Patent ID: 9656475
Date: 2017-05-23
CPC Classifications: A41D,A43B,B41J,B41M,D06P,H04N

Claim:
1. A method of printing a desired color onto a nonwhite substrate by additive printing of intermixed translucent color ink and opaque white ink, comprising: selecting a number of layers of intermixed translucent color ink and opaque white ink to be additively printed onto the nonwhite substrate; printing at least a first layer of ink onto the nonwhite substrate comprising a first mixture of an opaque white ink and at least one substantially translucent color ink, the first layer of ink having a first ratio of white ink to color ink being less than or equal to 1:1; printing at least a second layer of ink on at least a portion of the first layer of ink, the second layer of ink comprising a second mixture of the opaque white ink and the at least one substantially translucent color ink, the second layer of ink having a second ratio of white ink to color ink being less than or equal to 1:1; printing at least a third layer of ink onto at least a portion of the second layer of ink, the third layer of ink comprising a third mixture of the opaque white ink and the at least one substantially translucent color ink, the third layer of ink having a third ratio of white ink to color ink being less than or equal to 1:1; and adjusting the first ratio, the second ratio, and the third ratio based on the selected number of layers of intermixed translucent color ink and opaque white ink to be printed onto the nonwhite substrate, wherein the first ratio, second ratio, and the third ratio are substantially equal, and wherein a sum of the layers of intermixed translucent color ink and opaque white ink additively printed onto the nonwhite substrate produces the desired color being optically indistinguishable in the visible spectrum from the same color printed onto a white substrate using opaque color inks.