CIELAB substrate and ink parameters influence on ink fluorescence intensity

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2024-12-06 DOI:10.1016/j.dyepig.2024.112588

Marta Gajadhur

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Abstract

The article presents the illuminance of eight fluorescent inks in the context of colour CIELAB parameters. The tested fluorescent inks include the most commonly used colors in the white light spectrum, from blue-violet to intense orange. These inks contain 30 % of fluorescent pigments. The illuminance analysis of the ink films covers a wide range of ink layer thicknesses, the type of substrate (without and with optical brighteners), and the substrate CIELAB lightness from white to black used to obtain prints. The article derives the dependencies of the ink illuminance excited by UV radiation on CIELAB parameters, including the lightness of the substrate (L∗_s), the lightness of the fluorescent ink layer (L∗_ink), and the a∗ and b∗ parameters in the CIELAB space. In all cases, these dependencies have the nature of an exponential function and significantly impact the fluorescent effect. The novelty of the presented results is the possibility of an appropriate selection of the thickness of the ink layer, the ink colour, the substrate, and the substrate lightness to obtain desired ink illuminance. The research results may find application in many industries where fluorescent inks are used, particularly in the case of evacuation routes, safety signs, security printing, and various types of sensors.

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.