Abstract: There is provided an intaglio printing ink that causes little set-off, exhibits improved chalking resistance, and attains improved print quality, and which permits low-cost prevention of blocking by low-dose irradiation with ultraviolet light. The intaglio printing ink comprises at least an ultraviolet curable composition, an oxidation polymerizable composition, a photopolymerization initiator, an oxidation polymerization catalyst, and a pigment. An acid-modified epoxy-acrylate prepared by reacting a polybasic acid anhydride with an epoxy-acrylate obtained by reacting an acrylate, having two or more acryloyl groups and one carboxyl group in one molecule, with an epoxy compound, having two or more epoxy rings in one molecule, is used as the ultraviolet curable composition.

Abstract: An anti-counterfeit printed matter which forms an invisible image that can be visualized clearly to prevent a visible image from impeding visibility of a visualized invisible image. A plurality of object elements are arranged at a predetermined pitch in a matrix, each object element including a first object and a second object arranged along a first direction on both sides of a boundary at a center to oppose each other, and a third object and a fourth object arranged along a second direction perpendicular to the first direction on both sides of a boundary at the center to oppose each other. The first object and the second object, and the third object and the fourth object of each object element have a negative/positive relationship. The first object and/or the second object form a first invisible image. The third object and/or the fourth object form a second invisible image.

Abstract: This invention relates to an anti-counterfeit printed matter such as a banknote or a passport which requires anti-counterfeit or anti-copy, a method of manufacturing the same, and a recording medium storing halftone dot data creation software.

Abstract: This invention relates to an anti-counterfeit printed matter, including securities such as banknotes, stock certificates, and bonds, various kinds of certificates, and important documents, which requires anti-counterfeit or anti-copy. [Solving Means] A visible image is formed by a first object group arrayed in a first direction at a predetermined pitch and a second object group arranged in the non-imaging area of the first object group. The second object group forms the negative and positive images of a first invisible image by arbitrarily arranging two kinds of objects in pairs in the on/off relationship. Addition, in the anti-counterfeit printed matter, the first object group includes object portions that are formed in at least two height levels from the surface of the printed matter so as to have a predetermined difference in height, thereby forming a second invisible image.

Abstract: This invention relates to a printed matter which visualizes a latent image pattern by periodically formed raised image lines when observed in a tilted state, and provides an anti-counterfeit printed matter which allows latent images having different densities to be observed from a plurality of observation angles. In the anti-counterfeit printed matter, a region serving as a shade of a latent image is formed in addition to image lines forming a latent image portion and those forming a background portion, or at least one of the latent image portion, the background portion, and the shade portion is divided into a plurality of regions, and image lines formed in the divided regions are arranged at different angles, thereby forming a three-dimensional latent image observed from a plurality of directions.

Abstract: This invention provides a latent image pattern formed body that allows to observe a latent image having excellent visibility and authenticity discrimination and design properties than those of related arts when observed from the oblique direction. The latent image pattern formed body includes, in at least part of one surface of a substrate, a latent image region, an outline region arranged on an outline of at least part of the latent image region, and a background region arranged on a background of the latent image region and the outline region. In the latent image region, a plurality of first elements having a concave or convex shape are arranged at a first pitch in a first direction. In the background region, the plurality of first elements are arranged at the first pitch in the first direction in a phase different from that of the first elements in the latent image region.

Abstract: This invention provides an information recording patch that allows accurate authenticity discrimination, a printed sheet, and an authenticity discrimination method therefor. An information recording patch includes a protective layer (1), intermediate layer (2), metal layer (3), and adhesive layer (4). The protective layer (1) made of a material having a predetermined dielectric constant is arranged at the uppermost layer. The intermediate layer (2) made of a material having a predetermined dielectric constant has, on its surface, a three-dimensional pattern corresponding to the design of a hologram forming layer including the intermediate layer and the metal layer. The metal layer (3) made of a material having a predetermined conductivity is arranged on the three-dimensional surface of the intermediate layer to form a conductive film.

Abstract: This invention implements a printed product capable of embedding a variety of information which are unrecognizable by human eyes in image lines included in a security line drawing without decreasing the artistic effect of printed image lines and authenticating the information on the basis of the Fourier-transformed pattern of the printed image lines. This invention provides an information authenticable printed product having a plurality of line drawings in which an image line includes a unit image line including a plurality of image lines arrayed in parallel along a normal direction, and the normal-direction intervals between the plurality of image lines in the unit image line are set in correspondence with information to be embedded, an authentication method, a method of embedding information in the printed product, and an authentication apparatus.

Abstract: A method and apparatus for inspecting defects and attachment position of an attached OVD without any influence of a change in the pattern of the OVD due to fluttering or undulation during conveyance of the printed product. Image input means and illumination means are arranged at positions where mirror reflected light and diffracted light from the OVD have values equal to or less than a threshold value upon a binarization process by image processing means. The image processing means executes the binarization process, compares the image data with the reference image data or the image data with the reference image data and the data indicating the reference position, and determines the acceptability of at least one of the form, area, and position of the OVD attached to the base material on the basis of a comparison result.

Abstract: In authenticity determinable printed matter according to this invention, a background image portion and at least one message image portion are printed on a surface of a base member. The background image portion has a first line drawing which is arrayed in a first direction and printed by an ink with a specular gloss to have an ink layer thickness. The message image portion has a second line drawing which is arrayed in a second direction and printed by the ink with the specular gloss to have the ink layer thickness.

Abstract: A halftone dot printed product which imparts an anti-forgery function to a continuous-tone image by using four colors of Cyan, Magenta, Yellow, and Black, and a method of printing the same are disclosed. The product and method include a first halftone region having m×m pixels and a second halftone region having n×n pixels, where halftone dots to express a continuous-tone image are printed, are laid out. A plurality of first halftone regions in independent regions are disposed tightly around one second halftone region. A plurality of second halftone regions are laid out along the outer periphery of one first halftone region at an equal interval. An embedded image is formed by at least one color ink containing no infrared absorptive dye and is laid out by using halftone dots in the first halftone region 1. An embedded image is formed by black ink containing an infrared absorptive dye and is laid out by halftone dots 3 in the second halftone region.

Abstract: This invention provides a method and apparatus for inspecting defects and attachment position of an attached OVD without any influence of a change in the pattern of the OVD due to fluttering or undulation during conveyance of the printed product. Image input means and illumination means are arranged at positions where mirror-reflected light and diffracted light from the OVD have values equal to or less than a threshold value upon a binarization process by image processing means. The illumination means irradiates the surface of a base material with infrared rays or light containing infrared rays. The image input means inputs image data including a wave range of 650 [nm] or more from a region including the OVD attached to the base material. The storage means stores, in advance, reference image data of an OVD serving as a standard or the reference image data and data indicating a reference position and also stores the input image data.

Abstract: An authenticity discriminable printed matter in which a latent image cannot be visually identified under ordinary visible light but appears upon being irradiated with UV rays. A basic image is formed on a base material. The basic image is made of a latent image portion and latent image peripheral portion. The latent image portion and latent image peripheral portion cannot be visually discriminated, and each of them is formed from a set of dots continuously laid out at a predetermined period. The resolution of the dots of the latent image portion is different from that of the dots of the latent image peripheral portion. The latent image portion and latent image peripheral portion have the same percent dot area per unit area and different dot peripheral lengths (contour lengths) per unit area. The latent image portion and latent image peripheral portion are printed by color fluorescent ink, thus obtaining printed matter.