Inspection systems for security substrates

Finally, there is a solution to what previously had been beyond the scope of in-line automated optical inspection: The Enhanced Threads Inspection add-on for our acclaimed BankSTAR banknote paper inspection verifies the manufacturing quality of embedded and windowed security threads.

Besides the up to 16 checks on security paper thread zones that BankSTAR has been performing anyway, revolutionary new algorithms are now employed to verify the thread décor for defect-freeness, detect thread slitting errors and trace thread fluorescence.

The detection of off-colors has been an increasing concern of security paper manufacturers. Fluorescent security fibers and extremely low-contrast stains do not differ from the substrate or from one another by grey value, but only by color. Adherence to rigorous quality standards and customer demands therefore requires color evaluation alongside contrast-based inspection.

BankSTAR Color allows the free defintion of color spaces to distinguish between correct colors and off-colors. Unwanted security fibers - visible or UV-reactive - are faithfully detected by dedicated hardware processing in near real-time at even the highest web speeds. Correctly colored security fibers are tolerated. By the same token,  oil stains and other off-color contaminations are found even if their grey value is the same as the substrate's.

BankSTAR Color is the perfect companion for BankSTAR WS, PM, OV and CC, adding a one-of-a-kind color feature to security substrate inspection. 

This innovative new inspection solution helps to optimize the trim position of the roll slitter with sheet format inspection.

Incorrectly cut paper rolls lead to significant waste and reduce your throughput – lowering both productivity and yield. 

BankSTAR RS ensures exact position control of slitting and trim. It detects even the smallest object positioning deviations and defects.

BankSTAR RS is the only solution for performing format inspection on the roll slitter that helps you avoid waste, increase productivity and gain process control. 

Automate optical inspection on the thread slitter with a highly specialized thread inspection behind the slitting knife. This new inspection system inspects both the slitting position and the content of the threads on the pancake roll. 

The special image-processing algorithm checks each thread separately, tolerating thread oscillation. This enables perfect quality control as each single thread is checked for immaculate quality. 

In addition, perfect process control helps re-adjust the knife before the slitting position goes out of tolerance. Reduce quality claims and the associated cost by ensuring that only material meeting your customer´s quality standards is passed along the process chain and shipped.