Latent image
An image formed by the parallel lines printed at an angle to the lines of the background. Usually printed by offset. The printing technique and colours of the image and the background are integral and the image in indistinguishable by the naked eye (fig. 1).
Visible with magnifying devices as an alphabet character, a numeral or a geometrical figure (fig. 1).
a
b
Fig. 1. Latent image 20 Mozambique Meticais (2011).
a – image of a banknote showing the location of the element (the latent image is indistinguishable);
b – zoomed image of the latent image