The technology, with which inks, varnishes, silicones and adhesive are cured using UV light, has plenty to offer the printing and coating industry. Since the start of this millennium, LEDs have been used in addition to arc lamps for UV curing.
The output of a UV lamp is measured in W/cm. It describes the electrical input, i.e. the electrical power input per centimetre of lamp length. The output of a UV LED, however, is given in W/cm². This represents the optical output, i.e. the light output per square centimetre.
Is an LED UV system more economical than a lamp system? How is energy saved with an LED UV system? This is possibly the most frequently asked question when it comes to LED-UV technology, and there is no standard answer.
LEDs have already become a popular choice for lighting. In the printing industry, the merits of LED UV technology compared to systems with UV lamps have also been under discussion for several years now. In other industries, the new technology is still getting started.