Anti-counterfeit printed matter

An anti-counterfeit printed matter comprising:

• a visible image is printed on an outer surface of a base material by a first object group printed on the outer surface of the base material radially from a center and a second object group printed on the outer surface of the base material in a non-imaging area of the first object group,
• the second object group is printed on the outer surface of the base material concentrically from the center at a predetermined pitch,
• the second object group forms a negative region and a positive region of an invisible image,
• the second object group includes a plurality of second objects that form one of the negative region and the positive region of the invisible image, a plurality of third objects that form the other region, and a plurality of fourth objects that relax density imbalance,
• an object width of the second object is the same or the same as that of the third object, the fourth object has an object width ½ or ½ that of the second object or the fourth object,
• the second objects, the third objects, and the fourth objects are printed on the outer surface of the base material in a plurality of arch-shaped object units that are periodically arrayed,
• the plurality of arch-shaped object units include a first object unit, a second object unit, a third object unit, and a fourth object unit, the first object unit and the second object unit that are adjacent have the same size,
• the third object unit and the fourth object unit include an object unit having a size larger than that of the first object unit and the second object unit that are adjacent and a shape elongated toward the center in a concentric direction with respect to the first object unit and the second object unit,
• in the first object unit, the second object is formed in the concentric direction at a predetermined position with a predetermined tilted major axis relative to the first object unit,
• in the second object unit, the third object is formed in the concentric direction at a position shifted from a formation position of the second object by a ½ or ½ pitch, said third object having the same predetermined tilted major axis relative to the second object unit,
• in the third object unit, the second object, the fourth object, and the third object are sequentially printed on the outer surface of the base material with the same predetermined tilted major axis relative to the third object unit,
• in the fourth object unit, the third object and the fourth object are sequentially printed on the outer surface of the base material with the same predetermined tilted major axis relative to the fourth object unit, and
• one of the third object unit and the fourth object unit is printed on the outer surface of the base material on at least part of an outline of the invisible image;
• wherein the invisible image is adapted to be viewed with a discrimination tool to reveal a visible printed image.