Stable emissive toner composition system and method
First Claim
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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Abstract
A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and 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 a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do 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.
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Citations
64 Claims
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1. A method of marking an article with an image indicia for authentication, information, or decoration, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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14. A system for full-color emissive image production on a substrate, the image including a plurality of image components representing image indicia, the system comprising:
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a plurality of color toner compositions, each of said plurality of color toner compositions including; a photoluminescent agent that emits light having one or more dominant emission peaks in a first emission spectral region, each of said one or more dominant emission peaks centered at a corresponding emission wavelength, when irradiated with a first excitation energy; a charge control agent; and one or more additives, said 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 for irradiation with said first excitation energy includes only dominant emission peaks in said first emission spectral region corresponding to said one or more dominant emission peaks of said photoluminescent agent; and a printer for applying the color toner compositions to the substrate. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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15. A system for full-color emissive image production on a substrate, the system comprising:
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a first color toner having a first invisibly emissive effective amount of a first photoluminescent agent that does not emit light in the visible spectrum when irradiated with visible light and emits light having one or more emission peaks when irradiated with a first non-visible excitation wavelength of light and a first emissively invisible charge control agent; a second color toner having a second invisibly emissive effective amount of a second photoluminescent agent that does not emit light in the visible spectrum when irradiated with visible light and emits light having one or more emission peaks when irradiated with a second non-visible excitation wavelength of light and a second emissively invisible charge control agent; and a third color toner having a third invisibly emissive effective amount of a third photoluminescent agent that does not emit light in the visible spectrum when irradiated with visible light and emits light having one or more emission peaks when irradiated with a third non-visible excitation wavelength of light and a third emissively invisible charge control agent, the first, second, and third toner each producing an image component of the full-color image when printed on the substrate, an emission spectrum corresponding to the image component of said first toner when irradiated with said first non-visible excitation wavelength including only dominant emission peaks corresponding to the one or more emission peaks of the first photoluminescent agent, an emission spectrum corresponding to the image component of said second toner when irradiated with said second non-visible excitation wavelength including only dominant emission peaks corresponding to the one or more emission peaks of the second photoluminescent agent, an emission spectrum corresponding to the image component of said third toner for irradiation with said third non-visible excitation wavelength including only dominant emission peaks corresponding to the one or more emission peaks of the third photoluminescent agent; and a printer for applying the first, second, and third color toners to the substrate.
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46. An article of manufacture, comprising:
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a substrate; and at least one image component 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, wherein the at least one image component has an emission spectra when irradiated with the first excitation energy that includes only dominant emission peaks in a first emission spectral region corresponding to the one or more emission peaks of the photoluminescent agent. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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Specification