Inkjet Inks: Ink formulations for Digital Printing applications is probably the most difficulat problem that must be solved for further penetration of this printing technologyin the textile industry. The inks comprising of pigments or dyestuffs of high purity must be milled to the very fine particle size and particle size distribution. Inkjet inks must be formulated with precise viscosities, consistent surface tension, specific electric conductivity and temperature response characteristics, and long shelf life without settling or mould-growth. Other important parameter is color buildup on the substrate. The colorants must have very high strength and high chroma to achieve a broad color gamut with a minimum number of deposited colorants. In addition further properties such as adequate wash, light and rubbing fastness are required.
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