Authenticatable printed matter, and method for producing the...

Details Authenticatable printed matter, and method for producing the... Authenticatable printed matter, and method for producing the...

2007-07-17

2007-07-17

Fridie, Jr., Willmon (Department: 3722)

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing electromagnetic radiation

C283S002000, C428S916000

Reexamination Certificate

active

10297679

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.

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