Types of Equipment and Materials Applied to UV Printing (I)

In general, the types of technologies that UV printing will apply to are briefly described below:

1.UV light source equipment

Including lamps, reflectors, energy control devices, temperature control devices (or cooling devices).

(1) Tube

The most commonly used type of lamp used for UV light sources is mercury-filled mercury lamps (Mercury Lamps). Sometimes, other metals are added, such as Gallium. In addition metal halide lamps, and quartz lamps (quartzlamp) are also common types. At present, many rely on imports. The electromagnetic wavelength emitted by UV lamps must be between 200 and 400 nm.

(2) Reflector

The main function of the reflector is to reflect the UV electromagnetic waves back to increase the efficiency of the UV light source (UV Tech Publications, 1991). Another important function is to maintain the operating temperature of the lamp. The surface of the reflector is usually made of aluminum and the reflectance requirement usually needs up to 90%.

There are two basic types of reflectors, one is the focusing type and the other is the defocusing type. Along with the development of the manufacturer, there are other extension types.

(3) Energy Control Device

The main energy supply of this device is to control the UV energy emitted by the UV lamp to be stable, so as to maintain the efficiency and stability of the hardening, in order to meet the needs of different printing speeds. There are electronic designs, but also use microcomputer control.