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Effect of Ozone on Rate of Paper Yellowing in Dark Storage Test

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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, are 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 focuses on additional thermal stability experiments that studied the influence of ozone exposure on the rate of paper yellowing under thermal test conditions. Moreover, due to the rapid yellowing of some microporous photo paper after exposure to ozone, it is also possible to compare the validity of an accelerated thermal test method in predicting results at ambient conditions. This research is part of ongoing work contributing to the development of standardized test methods for image permanence.

Document Type: Research Article

Publication date: 2008-01-01

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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