ABSTRACT

Inkjet Printing is one of the latest techniques which belong to digital printing. Inkjet Printing is the technology which uses droplets of ink to be ejected from the nozzles to spray on the image areas of the paper. Print contrast is the print quality parameter which focuses on correct rendering of details in shadow areas. This paper focuses on finding the effect of printing substrates surface characteristics on print quality (print contrast) in Continuous Inkjet and Drop-on-Demand (Piezoelectric) Inkjet Print Engines on coated (matte and gloss) and uncoated paper stocks. A test chart was prepared with the help of predetermined number of tint patches and it was printed with the help of Continuous Inkjet and Drop-on-Demand (Piezoelectric) Inkjet Presses. The results indicated that coated paper stocks impart better print contrast compared the uncoated in CIJ and DOD (Piezoelectric) printing presses. On a selected paper type, DOD (Piezoelectric) shows better results for print contrast.

KEYWORDS: – Continuous Inkjet, Drop-on-Demand (Piezoelectric), Inkjet Print Engines, Print Contrast, Matte Coated Paper, Gloss Coated Paper, Uncoated Paper