Printing ink composition development and research of the reproduction technology for the full-color images while printing on non-absorbing substrates
The imprint with a stable color characteristics and saturation while printing on non-absorbing substrates is determined by the reaction of ink and the substrate. To stabilize the printing process and to ensure the standardized color reproduction parameters on the substrates that have got a non-absorbing surface it is proposed to place into the offset ink formula (combining with the general components like pigment, mixture of solid resins and oligomers) the mixture of ethoxylated linear secondary alcohols and alcoxylates, which stabilizes the ink-water balance, makes the even ink transfer on all the substrate surface; and also to place the target additives to increase the printing production productivity and increase the height of the imprints pile on the delivery.
For white ink of the screen printing it is proposed to combine the phenol-formaldehyde resins and resins based on the vinilidenchloryde derivatives, organic solvents, glycol derivatives, fluorescent components, and surfactants to achieve easy squeezing of the ink through the printing element high-dens printing form net, to reach an even layer of the ink on the substrate, high adhesion, exact image reproduction, and standardized parameters in CIE LAB system for typical papers.
The complex methodology is developed and certified to examine the reproduction parameters depending on the components of printing form making process and the printing process: printing substrate composition, structure and characteristics, reproduction original, type of printing equipment and control systems. The mathematical models of the reproduction processes basing on the parameters of the system “original-imprint” are developed to predict the imprints’ properties and to evaluate the figures reliability and also to ensure the printing stability of the printing forms. The recommendations for mass ink production and conducting the technological reproduction process are developed.