INTAGLIO PRINTED PRODUCT HAVING FORGERY PREVENTIVE STRUCTURE, METHOD FOR DISCRIMINATING AND DISCRIMINATING IMPLEMENT

摘要

PROBLEM TO BE SOLVED: To provide a printed product having an intaglio printing element and/or an intaglio dot pattern with a fine slit pattern structure without developing latent image information merely by inclining without noticing it as a latent image intaglio at a glance. SOLUTION: A fine slit pattern structure is executed on a basic image A expressing the face image of a person by continuously changing the printing element width or the diameter of the line drawing and/or the dot pattern. The slit pattern is the intaglio printed product of a slit pattern structure of parallel straight line pattern state at an equal interval of about 1 to 0.3 of the ratio (non-printing element part/printing element part) of the printing element part to the non-printing element part. The discriminating implement is made of a transparent film base material for discriminating a truth or a falsehood of the intaglio printed product by a discriminating screen having a parallel line pattern of a pitch interfered with that of the image of the parallel line pattern of the same pitch as that of the fine slit pattern structure filled in the intaglio printed product.