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Impact of Light Bleaching on Dark Storage Test

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Ongoing research of the dark storage test for print images has revealed several factors which influence the results. Although it has been known for many years that exposure to light can ‘bleach’ or whiten media that has yellowed with aging, it has not been studied extensively in the context of its impact on the dark storage test. Investigation into this phenomenon has found that simply exposing yellowed media test samples to office light for a few hours causes measurements to shift by 10%. This research studied how the type, intensity, and length of light exposure affected media at different stages of yellowing. One experimental observation is that some bleached media placed in the dark quickly begins to yellow again and in continued testing is indistinguishable from unbleached media. Moreover, the temporary whitening of media during measurements in the dark storage test is best avoided as it can have considerable repercussions on the data analysis.
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Document Type: Research Article

Publication date: 2011-01-01

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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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