Optical Test / AOI
Quality Control – The optical test checks whether there are is a deviation from the patterned board to the layout. The AOI (Automatic Optical Inspection) system scans the surface of the PCB for quality defects. It identifies smallest violations of the pattern in comparison to the original CAD data.
The AOI test measures the line width and spacing, detects any access copper, hole breakage or short circuits.
The AOI system allows Hotoprint to find even hidden defects such as reductions or cuts in the tracks. These are defects, which are difficult to identify with e-testing only. The AOI test provides a reliable assessment of the quality of the pattern.
Not only all outer but also all inner layers of multi-layer boards are subject to this strict quality control.
Micro section analysis is used to monitor and document the quality of the metal deposition and the inner layer connections within the holes.