The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2024
Filed:
Oct. 13, 2021
Xerox Corporation, Norwalk, CT (US);
Edward N. Chapman, Rochester, NY (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
A method and system for rendering a watermark with near perfect infrared colors can involve providing an infrared pattern ink having a color with a lower spectral reflectance in an infrared spectrum, replacing the color having the lower spectral reflectance with a replacement color constituting a combination of colors having a higher spectral reflectance in the infrared spectrum, them matching in a visible spectrum, the replacement color with the color having the lower spectral reflectance in the infrared spectrum, and rendering a watermark as a metameric color pair including the infrared pattern ink and replacement color. Alternatively, a watermark may be created by defining a first color pattern having a CMYK value derived from a particular LAB value with a lower toner stack and a higher reflectance in an infrared spectrum as compared to a second color pattern having a second CMYK value derived from the same LAB value.