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Volume: 21 | Article ID: art00045_1
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Digital Glossing, Its Applications and Performance Evaluation
  DOI :  10.2352/ISSN.2169-4451.2005.21.1.art00045_1  Published OnlineJanuary 2005
Abstract

In Graphic Arts industry, the surface treatment of glossing provides two major functions to the printed sheets. The first is to accentuate the piece giving it more emphasis and the second is to serve as a protecting layer against damage to the information underneath. The common practice of glossing involves both in-line and off-line processes of aqueous, varnish, Ultra Violet (UV) and lamination. Aqueous and varnish could be applied in-line using one of the inking units of an offset press. UV could be applied through a build-in device that's part of the offset press or an offline UV applicator. Aqueous and UV could be done real-time but varnish has to be applied after the printed ink is dry completely, usually overnight. Lamination is an off-line process adhering a layer of glossy thin film material on top of the entire printed sheet to deliver high gloss if so desired and this is gloss lamination. When a layer of matte film is applied to the printed sheet it will give a matte appearance instead of glossy and it's known as matte lamination. Both solid and liquid films are available for lamination processes. The gloss lamination could achieve a gloss level of 80 (G20) or higher.Several attempts were made by the digital printing industry to increase the overall gloss level of electro-photographic prints. They include both in-line and off-line processes. The results were mixed. Gloss lamination and UV coating remain as the two major methods to provide high gloss for electro-photographic prints.1 A novel method to deliver high gloss on these prints is being reported in this article.2 This approach utilizes a belt in fusing a layer of Clear DryInk overcoat on top of a printed sheet to achieve a high level of gloss. It also makes use of barcodes and barcode-scanner to communicate the machine parameters between the digital press and the glossing unit hence an optimized system level near-line solution. Several substrates were tested using this method in comparison to aqueous, varnish, UV and lamination. The achieved gloss level and protection performance were reported in this study.

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  Cite this article 

C. Jeffrey Wang, "Digital Glossing, Its Applications and Performance Evaluationin Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP21),  2005,  pp 157 - 160,  https://doi.org/10.2352/ISSN.2169-4451.2005.21.1.art00045_1

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