Challenges within Functional Printing Flaws’ Detection printing control o screen control o ... •...
Transcript of Challenges within Functional Printing Flaws’ Detection printing control o screen control o ... •...
Add functionalities but not at any cost
• Add functional properties without additional processing steps
• Keep the scrap as low as possible
o production fast start-up
o minimal processing variations
o production repetitiveness
• Keep the yield as high as possible
o production speed; web width
o fast job change (customization)
o no breach of the processing/production flow
It is essential to control, measure and monitor all process parameters in line at each production steps
Continuous monitoring of manufacturing process
• Type of controls:
o registration control at each processing step
o surface quality/aspect control
o geometrical position control of
printed patterns
o printing control
o screen control
o ………
Retrieve defects which degrade the functionality
CASE STUDY : Printed circuits
• 2D analysis of print quality
o very high resolution for surface, patterning and ink transfer defect detection
o precise measurements for registration and alignment control
o automatic classification to distinguish functional from
cosmetic defects
Cosmetic defects
Functional defects
• At each production step the relative position of the new layer to the previous ones must be controlled.
• Software tool colors the views in order to overlap images of different steps
Layer 1 before and after colourmanipulation
Layer 2 before and after colour manipulation
Layer 2 overlapped has a layer. The swipe is set to have only one part of the image overlapped. Transparency allows to keep seeing layer 1.
CASE STUDY : OPV
• Double sides printing and see-through effect
• Metallic ink printing and rolling bar effect
CASE STUDY : Ultra security printings
CASE STUDY : Anti-counterfeiting printing
• Genius product has patterns perfectly aliened on the edges.
• All processes steps must ensure a patterns alignment accuracy to within a tenth of a millimeter.
CASE STUDY : Varnish thin protective layer
• Post-print varnish is a thin invisible protective layer on both sides of the banknote applied as last step in the printing process.
• The varnish protects the printing from tear and wear and it protects the security features.
Camera based inspection
• High-resolution image processing systems, line-scan camera based
• Killer defects detection :
o coating, laminating defects
o structuring/laser scribing defects
o base material defects
o environmental contamination / inclusions and foreign particles
• Features’ geometrical and dimensional control
• Multi spectral control
Benefits
• Minimize number of defects to improve lifetime and efficiency
• High accuracy inspection, measurement and analysis enable
process characterisation and validation
• Quality management in multi-step processes identification of
the origin of the defects
• Full traceability along the entire production
• A French Company, a Global presence
• More than 20 years of expertise in its core specialties
• More than 2000 inspection systems installed worldwide
• Headquarters in Lyon, France
IN-CORE Systèmes
Thank you for your attention!
IN-CORE Systèmes10 rue Ampère69680 CHASSIEU FRANCE
www.incore-systemes.com
Dr Michel PopovicGeneral [email protected]