In general, the UV printing ink to printing is a general UV printing, UV printing is the main principle of ultraviolet radiation, and radiation is a type of Electromagnetic wave, different radiation energy, is to distinguish by different wavelengths, different energy of the wavelength of the Electromagnetic spectrum (Electromagnetic spectrum), based on the length of the wavelength arrangement will be divided into the following several (from short to long) : cosmic rays, curry rays, x - ray, ultraviolet, visible light spectrum and infrared light, microwaves and radio waves, etc.

Electromagnetic spectrum can be divided into (from short to long) : cosmic ray, gemma line, X-ray, ultraviolet ray, visible spectrum, infrared ray, microwave and radio wave, etc., while the ultraviolet ray is defined by the international lighting committee. According to the length of wavelength, the arrangement can be divided into three types:
(a) UVA:
The wavelength of the electromagnetic spectrum in 315 ~ 400 mm within the scope of the ultraviolet ray, is one of the most innocent and the most common ultraviolet ray, because it has the smallest energy, fork called BlackLight, namely near ultraviolet, usually used in the relatively benign and fluorescent substances emit ultraviolet light, as is also known as photochemical line, on behalf of the UV ink can produce a maximum polymerization hardening when using efficiency of energy output, and this point is usually used in measuring the UV light attenuation, whether have this important reference point for measurement.
(2) the UVB:
That is, the wavelength of the electromagnetic spectrum in the range of 280~315mm, is the most typical destructive uv. Because it has enough energy to damage biological tissue, it can cause skin cancer, and because ozone is damaged, reducing the amount of time it takes to get sun exposure is very important. This wavelength in UV inking does not have an effective role, and therefore unless special needs, generally rarely used in UV printing UV lamp.
(3) the UVC:
That is, the wavelength of the electromagnetic spectrum in the range of 100~280mm, short wave length UVC is almost completely absorbed in the air. On the purpose of the UV printing, it has to reinforce the ink membrane surface hardening effect, in recent years, has used nitrogen blowing in the surface of the print and UV printing method, its purpose is to make UVC produce ozone opportunities to reduce, and make the UVC radiation energy can be fully used in polymerization hardening of dry, this method is more costly, but it will increase the efficiency of polymerization hardening drying to the best state.