An investigation of the use of digital colour matching for the toning of papers using ink-jet printing

Abstract

Summary The author investigated the possibility of defining colour digitally, based on the tristimulus values of an established target, and obtaining accurate reproduction through ink-jet printing. The effectiveness of the process was assessed using a poster with a missing black-coloured area. The missing colour was set as the target to be digitally reproduced. CIE L*a*b* values and spectral reflectance curves of printed specimens were compared to those of the target in a viewing booth under illuminant D65. Accurate colour reproduction was found to be possible and the use of this method for toning in fills on paper objects could save time when compared to conventional methods, thus being cost-effective. The merits of adopting a reliable Colour Management System are outlined and the steps involved in achieving this novel approach towards the toning of paper are described in detail.