On the graphic products such as labels for beer, a variety of folding boxes and others which are exposed to temperature changes more and more us facing designed graphics that are printed with thermal inks. Thermal ink reacts to certain changes in temperature and changes color of printed
often seemingly invisible tons.
The tone of these colors changes depending on the current temperature and ranges from blue to red. The colors are composed of pigments that usually achieved blue intensity at 8-12 degrees C (the temperature of the beer).
These inks come on the market prepared for the offset printing technique in two variants.
- Termoblue or red waterproof ink for traditional offset printing
- Termoblue or red for UV printing
To optimize the printing process, (inking and registration) in application of these colors should be taken into account that they are at room temperature optically inactive, invisible.
To make print visible as an aid is
used spray for cooling. Background or substrate on which is printing with thermal inks should be neutral white, which is a prerequisite for achieving a satisfactory contrast. Through these colors can be applied varnish, they are not toxic which means that can be used in making for all types of packaging or special design effects.