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Stable emissive toner composition system and method

  • US 10,082,744 B2
  • Filed: 11/20/2017
  • Issued: 09/25/2018
  • Est. Priority Date: 08/21/2007
  • Status: Active Grant
First Claim
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1. A method of marking an article with an image indicia for authentication, information, or decoration, the method comprising:

  • providing at least one toner composition that includes;

    a photoluminescent agent that emits light having one or more emission peaks in a first emission spectral region, each of the one or more emission peaks centered at a corresponding respective emission wavelength, when irradiated with a first excitation energy;

    a charge control agent; and

    one or more additives,the photoluminescent agent, charge control agent, and one or more additives being selected and present in an amount in the toner composition such that when the toner composition is printed to produce an image component on a substrate, the emission spectra of the image component when irradiated with the first excitation energy includes only dominant emission peaks in the first emission spectral region corresponding to the one or more emission peaks of the photoluminescent agent; and

    printing at least one image component using the at least one toner composition, the at least one image component making up at least a portion of the image indicia on a substrate.

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