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Brittleness of Digital Reflection Prints

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Although cracking of image layers and/or buckling of papers is a potential problem for some digital prints under adverse handling conditions, there has been little investigation of this behavior. This study reports the results of using the ISO standard Wedge Brittleness Test, originally developed for traditional photographic films and papers, to explore the relative sensitivities of a variety of digital print types at 23°C/15% RH and 50% RH. The quantitative measurement in this test is the largest diameter in a wedge at which cracking or buckling first occurs. This method proved to be suitable for digital prints and allowed the examination of specimens for cracks and buckling. Some prints required very close examination after being subjected to the applied stress because many of the resulting defects were microscopic. The relative severity of the resulting damage is also discussed. Results are reported for over two dozen unprinted papers as well as mid-density prints produced by ink jet, dye diffusion thermal transfer, offset lithography and electrophotographic printing methods as well as by the traditional wet chemical process. There were wide differences in behavior between materials. In general, as might be expected, damage was more severe with some papers at the lower humidity condition.

Document Type: Research Article

Publication date: January 1, 2009

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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