engleski

Impact of Printing Additional Inks on Multicolor Reproduction with Liquid Electrophotography Toner

In terms of increasing quality of reproduction there is sometimes a need to print additional spot inks together with the standard CMYK inks. One of the digital printing techniques that can achieve that is the liquid toner electrophotography. Modern printing machines that work on the principle of liquid toner electrophotography include an additional spot ink printing option. In this paper the impact of additional spot colour printing on a 4-colored reproduction will be analyzed, and by using spectrophotometric test a possible increase in quality will be defined. It is necessary to define how additional spot colours affect the reproduction of full tones, screening surfaces (CIEΔE, gamut reproduction) and how the printing substrate affects the final reproduction.

Electrophotography; Hi-Fi printing; IndiChrome printing; spot inks; gamut of reproduction

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