ANTI-COUNTERFEIT PRINTED MATTER

摘要

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.

主权项

1. An anti-counterfeit printed matter comprising:
a plurality of units are periodically printed at a pitch in a region on an upper outer surface of a planar base material, each unit including a first object and a second object arranged along a first direction on both sides of a boundary at a center so as to oppose each other, in each of the plurality of units printed on the upper outer surface of the planar base material, the first object and the second object have a negative/positive relationship, the same area, and the same color, the first object and the second object form an invisible image by combining one object turned on with the other object turned off, and a third object having an object area ratio substantially ½ that of the first object and the second object and substantially the same color as that of the first object and the second object is arranged on a boundary line between the first object and the second object to relax density imbalance, in the region of the plurality of units arranged adjacent, at a position where, out of the first objects and the second objects arranged to form the invisible image, off objects are arranged adjacent to each other; said plurality of objects are printed in said plurality of units periodically on the upper outer surface of the planar base material in an arrangement with said negative/positive relationship of said first object and the second object being arranged in the arrangement of the plurality of units forming said invisible images and being adapted to be viewed by a separate discrimination tool that is overlaid to reveal a visible printed image on the upper outer surface of the planar base material.