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Influence of UVA Spectral Absorption and Photopermanence on the Weatherability of Laminated Ink Jet Graphics

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Unprotected ink jet graphics fade when exposed to natural or artificial light. Protective laminates containing ultraviolet absorbers (UVAs) are commonly applied over printed surfaces intended for exterior use to slow degradation caused by the ultraviolet component of sunlight. While this affords a level of UV protection, little has been reported about the influence of UVA chemistry on the longevity of coated / laminated prints. This is of relevance because UVAs differ both in their ability to screen specific portions of the UV spectrum and their photopermanence in various media which can limit their efficacy over time.

Commercial and experimental UVAs (benzophenones, benzotriazoles, triazines) were incorporated into two different protective coatings which were applied over test prints made using commercial narrow- and wide-format ink jet media / inks and weathered under dry xenon conditions. This paper describes the significant differences in color loss of both dye and pigment-based ink sets that result from the differences in spectral absorption and photopermanence of the various UVAs. The best results were obtained using novel photostable UVAs having broad absorption profiles across the long-wavelength UV region.
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Document Type: Research Article

Publication date: 01 January 2002

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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