Print Quality Comparision of Sheet-fed Offset and Digital Printing

Pages:91-93
Sanjeev Mathur, Bijender, Vishal Singh (Department of Printing Tech., G.J.U.S.&T., Hisar, Haryana)

Sheet Fed-Offset has been dominating printing process to print on paper substrate specially from last 3 decades. Digital printing methods have been devolved recently and captured a huge market share. Controlling the quality in both above processes is a topic of discussion among printers. This paper throws light on quality related issues to be followed in sheet fed as well as digital printing and hence to compare print quality of sheet-fed and digital printing. To test the quality a master chart is prepared and printed by both the processes sheet-fed offset as well as Digital printing on the gloss coated paper. The all test prints are tested by the help of X Rite spectrophotometer. The results indicated that digital printing exhibits more density in solid ink areas as compared to Sheet-Fed Offset printing. Dot Gain was found more in Digital Printing as compared to Sheet-Fed Offset. Print Contrast was evaluated higher in Digital Printing as compared to Sheet-Fed Offset Printing.