DSI - Digital Screen Imaging
The heart of the basysPrint UV-Setter technology is the Digital Screen Imaging (DSI) process. This process is based on the Digital Light Processing (DLP) technology from Texas Instruments.
- Reflector
- UV- Lamp
- Condenser
- DMD™
- Lens
- Exposure area
- Mirror 1
- Mirror 2
During t he DSI process, UV light hits a Digital Micromirror Device (DMD™), an optical semiconductor chip comprised of 800,000 mircospically small mirrors
Each of these “micromirrors” can be digitally controlled: the mirror either projects the light that it receives through an optical lens system or it diverts the light such that the lens does not catch it. Each mirror represents a pixel and a screen image is created on the printing plate.
D ue to the limited number of micromirrors (or pixels), only segments of the image can be projected during one exposure step. These picture segments are joined to form a composite image by a rapid succession of exposure steps. The picture segments measure approx. 0.8 cm to 6.3 cm in size, depending on the resolution selected. The highly precise positioning system of the exposure head (2 µm) ensures picture segments are perfectly joined and a totally seamless image in delivered every time.