Investigation of the colour reproduction quality of inkjet digital printing machines

Abstract

Industrial digital inkjet printing machines are increasingly entering commercial printing, label, packaging, etc. The quality of printing and the speed of inkjet printing machines are constantly increasing, but in a number of industries such as packaging, labels, etc. there are increased requirements for colour reproduction quality, which requires additional and in-depth research. The main purpose of this article is to study the different quality indicators of the most widely used digital inkjet systems. For the purposes of the experiment were used from the most commonly used in practice materials such as – regular matte and glossy coated paper, uncoated white paper, Jetcoat paper, photo paper - gloss, self-adhesive film - gloss, etc. with standard colour profiles FOGRA 39 and FOGRA 51 and offset uncoated paper with standard colour profiles FOGRA 29 and FOGRA 52. Several test forms with a large number of test charts and various control elements are printed on the aforementioned digital printing presses on different media. Colour gamut (2D and 3D), colour volumes, colour differences, etc. were studied. ICC profiles for the specific printing systems and materials have been generated and 2D visualization and comparison of the colour gamut of the studied media at different values of L and 3D visualization and comparison of the colour gamut of the studied media with standard ICC profile FOGRA.