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Reliability Issues for Color Measurement in Quality Control Applications

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As color digital printing expands into the business and consumer markets, the importance of “color accuracy” has increased. As a result, more and more people have had to become familiar with concepts such as color difference equations and ΔE*. While many of the concepts of color measurement are clearly explained in several current books, the myriad practical issues that contribute to color measurement error are seldom discussed. This leaves the practitioner of color measurement with tools for measuring color but little understanding of the key variables that affect the measurement process.

This paper examines critical factors affecting accuracy in color measurements and sheds light on issues involved in integrating color measurement into on-line or automated applications. The focus of the paper is to bring out key calibration issues, including frequency calibration, gain adjustment, dark reference and light reference. The repeatability and accuracy of color measurements are examined. Key sources of error are investigated, and suggestions are made for reducing sensitivity to them.
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Document Type: Research Article

Publication date: 1998-01-01

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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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