Abstract
It has been proposed to modify the surface of offset and coated paper with a special coating (primer) that ensures the high quality of ink-jet printing, specifically barcodes. The application of digital ink-jet printing using aqueous-based inks makes it difficult to achieve the required print quality on conventional paper. Ink-jet printing is widely used in the production of customized packaging and labeling products. Given that this type of products contains the printed barcode, it is necessary to ensure its functionality (readability) after printing.The primer ensures a controlled process of ink absorption at ink-jet printing, thereby improving the print quality. To this end, a composition of the primer was used on the basis of a water solution of the interpolymeric complex of polyvinyl alcohol (PVOH) and polyvinylpyrrolidone (PVP).The influence of the primer that contains different amounts of the interpolymeric complex on a change in the water contact angle of imprinted paper has been investigated.Prints on paper with and without the primer were obtained using an ink-jet printing method; quality of the line and barcode print was assessed. Such quality indicators for the line were defined as a line width on the imprint, a line blurriness at the line-paper interface, a line raggedness, and the optical density. In addition, the primer's effect on the barcode print quality at ink-jet printing was investigated.The study results make it possible to ensure the high quality of barcode printing on conventional print papers by using an ink-jet printing method. Applying the primer improves the line and barcode print quality. The barcode quality grade increases from the lowest (unacceptable) score of 0 (F) on paper without a primer to a score of 2 (C) on paper with the primer, which warrants that it is readable on packaging by a scanner.
Highlights
The quality of barcodes is determined by the print quality and optical characteristics of the basic bar lines
The results demonstrated that the use of polyvinyl alcohol (PVOH) provides the best trade-off between print color gamut and the accuracy of the reproduction of graphic elements, including the form of a line
The aim of this study was to investigate the effect of a special coating based on the interpolymeric complex of polyvinyl alcohol (PVOH) and polyvinyl pyrrolidone (PVP), which was used as a primer applied to paper, on the print quality of the line and a barcode by an ink-jet printing method
Summary
The quality of barcodes is determined by the print quality and optical characteristics of the basic bar lines. The printed barcodes, their structure, the size of lines and spaces [1], as well as the barcode quality [2] in general, must meet international standards. The barcode quality is strongly dependent on print preparation (a digital file and the print molds), a printing technique [3], the materials used in the printing process [4], the structure of their surface [5], as well as a barcode position on packaging and labeling products [6]. As regards the packaging and labeling products, and an important parameter is the quality of the barcode and line (bar) that a barcode is composed of
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