Current technology allows us to develop different solutions within the same family, from a conceptual point of view. All that is needed is a light source within the white light spectrum to be able to appreciate the effect developed by means of an ink. This solution cannot be applied in the dark, but neither does it require external devices.
Thus, by modifying the angles of incidence of the light on the plane we can appreciate differences in brightness or colour in the ink printed for this effect.
Iridescence, colour change, OVI are concepts that are sometimes confused or unclear. A brief explanation.
IRIDESCENT ink changes its shine depending on the angle of view. Combined with other inks it can change from virtually invisible to visible, with shinning effects resulting from the incidence of the light. This effect is best appreciated when light is applied and the document is moved to change the angle.
The iridescent effect of this kind of inks mainly depends of the size of the particle and the printing layer applied. Thus, greater effects are achieved when flexography and silkscreen are used as printing systems. When using offset and letterpress good effects are also achieved, although they have some restrictions.
IRIONEW inks combine iridescent effects with colour shades and therefore depending of the angle of view a different colour can be observed.
The iridescent effect of this kind of inks mainly depends of the size of the particle and the printing layer applied. Thus, greater effects are achieved when flexography and silkscreen are used as printing systems.
NEWCHROM inks (OVI inks) combine two iridescence colours, depending on the angle of vision.
The iridescence effect and the contrast of the colours are very strong in this kind of inks. also called color shifting ink is an anti-counterfaiting measure sed on many major modern banknotes, as well as on other official documents. Color-shifting inks reflect various wavelengths in white light differently, depending on the angle of incidence to the Surface.
Comments