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Improved Dark Storage Test Method

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Abstract:

The digital print industry is working toward the goal of adopting improved test methods for image permanence. As part of this effort, the new test methods are being designed to isolate the environmental variables that impact image permanence. The benefits of this approach are that it simplifies the test method and test equipment while promoting test results that can be reproduced at other test laboratories. To understand which variables to isolate for a given test method, it is necessary to investigate a broad range of conditions which may affect the test results. These variables may not have been controlled in the past, may be difficult to control, or may not accurately reflect real world conditions. In a prior paper, it was shown that airflow can affect the rate of paper yellowing in a thermal stability test used to simulate dark storage conditions.

During that testing, additional sources of potential noise were identified that affected the test results. This paper continues that investigation by showing that the presence of other test samples in the thermal test can influence the results; that is, samples can cross contaminate each other in the thermal test. This paper also details the development of a new test method which minimized the effect of cross contamination of samples within the thermal test. Moreover, the new test method also reduces variation in test results caused by varying airflow, either by position within the test chamber or due to testing in chambers of differing design. This research is part of ongoing work contributing to the development of standardized test methods for image permanence.

Document Type: Research Article

Publication date: 2009-01-01

More about this publication?
  • 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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