1. Virtual printing to enhance print quality Christophe Mercier

4. Print quality in IJ printing Difficult subject: Lot of physical interactions + human assessment Optimisation is a time consuming process Important features of the product related to purchases process Customer image quality rating Physical image parameters Technology variables Customer perceptions attibutes System model Visual model m model Image quality model Errors & trials improvements SUBSTRATE INK PRINTER System model

5. Who is concerned by print quality ? Customers type Specific needs Ink-jet integrator Components selection Ink/fluids suppliers Rheological properties: satellites Colour properties Print heads suppliers Jet directionality, drop speed uniformity, drop volume uniformity Ink system supplier Motion system suppliers Motion Accuracy, linearity Substrate suppliers Ink Absorption diffusion Software suppliers (dithering, multi-pass,…

13. Dots imposition

14. Dots placement accuracy

15. Substrate: fabric

16. Substrate + prints

17. Colour gamut modelling