Ultraviolet radiation device for drying ultraviolet print colors or ultraviolet paint on print substrate, has upper surface of radiation source partially provided with coating, which is implemented in wavelength selective manner

摘要

The device has a housing (2), in which a radiation source (1) and a group of reflectors (3) are arranged, where the reflectors have surfaces for absorption and/or for reflection of the radiation. The upper surface of the radiation source is partially provided directly with a coating (6), which is implemented in a wavelength selective manner. The upper surface of the radiation source is directly provided with a coating, which reflects the infrared (IR) radiation and transmits ultraviolet radiation, where the coating is applied by a vacuum coating process.