Patent ID: 11872833
Assignee: XEROX CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 14:
15. A printing system for rendering an infrared effect that survives copying, comprising:
a processor adapted to:
provide a metameric pair of pattern inks, wherein a first pattern ink reflects higher in an infrared spectrum as compared to a second pattern ink among the metameric pair of pattern inks, wherein the second pattern ink is less reflective than the first pattern ink;
for the second pattern ink that is less reflective than the first pattern ink, design a pattern for the second pattern ink that is larger and less scattered than an existing design for a pattern ink; and
use a color of media as a common color for the metameric pair of pattern inks to render an infrared effect from the metameric pair of pattern inks that survives copying on the media.