Printing security features, objects and the manufacturing process comprises the printing security feature

摘要

Printing security feature provided on the printable substrate (1) is described, the security feature is a straight line elements and / or curved elements a plurality of adjacent printed at a predetermined spatial frequency (110, 120) configuration print range comprises a (100). Linear elements and / or curved elements are printed by the at least first and second ink showing the same or substantially the same optical appearance when illuminated by white light, as a result, the security feature is a white visible light It generates a first figure displayed when irradiated, at least the first ink is an ink which reacts to invisible light excitation by generating a characteristic optical response distinguishes the first ink from the second ink. Security feature generates a second graphic display when it is illuminated with non-visible light, the second graphic display, distinct two-dimensional graphic elements that security feature is only revealed when it is illuminated with non-visible light (B ) show a. Inside the distinguishable two-dimensional graphic element boundary (160), a portion of the linear element and / or the profile elements (P3) is printed by the formulation of the first and second ink, linear elements and / or profile elements but in some the first and second parallel sections printed by the first ink and second ink, respectively (110a, 110b, 120a, 120b) is further divided into. The outer boundary of distinct two-dimensional graphical elements, portions of the linear elements and / or the profile elements (P1, P2) are printed by only one of the at least first and second ink. At least first and second ink is printed in register one to the other, as a result, no visible boundaries distinct two-dimensional graphic element when the security feature is illuminated with white light and distinct two-dimensional graphical elements only when the security feature is illuminated with non-visible light becomes visibleFIELD 3A and 3B