UV Marker for innerlayer registration TIR 24
- Double-sided exposure of the UV marks at different positions (in the direction of passage)
- UV registration marks diameter Ø 3 mm
- Congruence of the upper and lower UV mark better than 5 μm
- High edge sharpness of UV-marksexposure achieved within 2-3 sec.
The UV registration marks will be exposed before the DI/ LDI process on a dryfilm covered innerlayer with high edge accuracy on both sides and the edge of the PCB. At different positions (in the direction of passage), this exposure takes place with a congruence of the upper and lower UV mark to each other of less than 5 μm.