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Stable emissive toner composition system and method

  • US 9,104,126 B2
  • Filed: 09/16/2013
  • Issued: 08/11/2015
  • Est. Priority Date: 08/21/2007
  • Status: Active Grant
First Claim
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1. A method of producing an emissive toner composition for marking an article with an image indicia for authentication, information, or decoration, the method comprising:

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

    selecting a charge control agent that is chemically compatible with the photoluminescent agent and that does not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy;

    selecting one or more additives that are compatible with the photoluminescent agent and the charge control agent and that do not emit light in the visible spectrum when irradiated with visible light and do not emit light in the first emission spectral region when irradiated with the first excitation energy; and

    combining the photoluminescent agent, the charge control agent, and the one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with the first excitation energy includes only dominant emission peaks corresponding to the one or more dominant emission peaks of the photoluminescent agent.

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