DNA INK COMPOSITION, PRINTED BODY OF IDENTIFYING IMAGE OBTAINED BY USING THE SAME, AND INKJET RECORDING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide ink having hardly counterfeited identifying function, enabling the printing on a desired recording medium by an inkjet recording method and hardly causing fear of environmental pollution; and to provide an identifying system capable of preventing the counterfeit by detecting an identifying information from the image recorded by the ink in real time, and identifying an individual or industrial product.;SOLUTION: The water-based ink is prepared by adding ultrafine particles having DNA molecules bonded at least to the surface thereof, and water in combination, and optionally adding a coloring material, a water-soluble organic solvent, a surfactant, a water-soluble macromolecular compound, a pH buffer, a protein, a saccharide or the like. The identifying image is formed on the desired recording medium by using the DNA ink by the inkjet recording device. The DNA information in the identifying image is identified by a system having a detection means utilizing a nuclear magnetic resonance phenomenon, and a judging means for collating the DNA information with a previously registered DNA information.;COPYRIGHT: (C)2005,JPO&NCIPI