System and method for secure document printing and detection
First Claim
Patent Images
1. A method for authenticating an ink in an ink cartridge comprising the steps of:
- providing an optical reporter marker, the optical reporter marker having at least one light emitting upconverting phosphor particle linked by a linking group comprising an alkylene moiety, to a plurality of artificial polymorphic double stranded (ds)DNA fragments, said polymorphic dsDNA fragments each having an artificial sequence obtained by restriction digestion and ligation of extracted DNA and having an identifiable portion,introducing the optical reporter marker to the ink,detecting the optical reporter marker associated with the ink with a light source,obtaining a sample of the optical reporter marker from the ink for analysis;
analyzing the sample to detect the presence of the identifiable portion of the nucleic acid linked to the upconverting phosphor particle and thereby authenticating the ink as genuine.
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Abstract
A method for authenticating and verifying an item to be genuine is described. The method for authenticating the item comprises applying a particular nucleic acid material associated with a particular sequence of nucleic acid bases to ink within an ink cartridge or a toner compound within a toner housing. The method also comprises collecting a sample of either the ink or toner compound and verifying the ink or toner is genuine by detecting the particular nucleic acid material.
54 Citations
39 Claims
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1. A method for authenticating an ink in an ink cartridge comprising the steps of:
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providing an optical reporter marker, the optical reporter marker having at least one light emitting upconverting phosphor particle linked by a linking group comprising an alkylene moiety, to a plurality of artificial polymorphic double stranded (ds)DNA fragments, said polymorphic dsDNA fragments each having an artificial sequence obtained by restriction digestion and ligation of extracted DNA and having an identifiable portion, introducing the optical reporter marker to the ink, detecting the optical reporter marker associated with the ink with a light source, obtaining a sample of the optical reporter marker from the ink for analysis; analyzing the sample to detect the presence of the identifiable portion of the nucleic acid linked to the upconverting phosphor particle and thereby authenticating the ink as genuine. - View Dependent Claims (2, 3, 4, 5, 6, 32, 33)
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7. A method for authenticating ink comprising the steps of:
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providing an ink comprising an optical reporter marker, the optical reporter marker having at least one light emitting upconverting phosphor particle linked by a linking group comprising an alkylene moiety, to a plurality of artificial polymorphic double stranded (ds)DNA fragments, said artificial polymorphic dsDNA fragments each having an artificial sequence obtained by restriction digestion and ligation of extracted DNA, and having an identifiable portion, detecting the optical reporter marker in the ink with a light source, obtaining a sample of the optical reporter marker from the ink for analysis; and analyzing the sample to detect the presence of the plurality of polymorphic (ds)DNA fragments linked to the upconverting phosphor particle by performing a polymerase chain reaction (PCR) on the sample comprising said artificial polymorphic (ds)DNA fragments using specific primers, thereby producing specific length amplicons; and thereby verifying that the ink is authentic by detecting the specific length amplicons amplified from said polymorphic (ds)DNA fragments in said sample. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 34, 35)
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29. A method for authenticating an ink, comprising:
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providing an ink comprising an optical reporter marker linked by a linking group comprising an alkylene moiety, to at least one nucleic acid taggant comprising a plurality of artificial polymorphic double stranded (ds)DNA fragments, said polymorphic dsDNA fragments each having an artificial sequence obtained by digestion and ligation of extracted DNA; delivering an object marked with the ink comprising the marker compound into at least one supply chain; locating the object marked with the ink and collecting a sample of the optical reporter marker from said ink after said object has entered said supply chain; and identifying said nucleic acid taggant in said ink. - View Dependent Claims (36)
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30. A kit for authenticating ink comprising:
a container comprising an optical reporter marker linked by a linking group comprising an alkylene moiety, to a plurality of artificial polymorphic double stranded (ds)DNA fragments, said polymorphic dsDNA fragments each having an artificial sequence obtained by digestion and ligation of extracted DNA; and
an applicator for applying a sample of the optical reporter to the ink and to an object of interest.- View Dependent Claims (37)
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31. A method for authenticating an ink comprising the steps of:
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providing an ink comprising an optical reporter marker, the optical reporter marker having at least one light emitting upconverting phosphor particle covalently linked by a linking group comprising an alkylene moiety, to a nucleic acid taggant, the nucleic acid taggant having a plurality of artificial polymorphic double stranded (ds)DNA fragments, said polymorphic dsDNA fragments each having an artificial sequence obtained by digestion and ligation of extracted DNA, said polymorphic DNA fragments having an identifiable portion, detecting the optical reporter marker associated with the ink with a light source, obtaining a sample of the optical reporter marker from the ink for analysis, analyzing the collected sample to detect the presence of the polymorphic DNA fragments covalently linked to the upconverting phosphor particle by performing a polymerase chain reaction (PCR) on the collected sample comprising said artificial polymorphic DNA fragments using specific primers, thereby producing specific length amplicons; and verifying that the ink is genuine by detecting the specific lengths of said amplicons. - View Dependent Claims (38, 39)
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Specification