Reliability Issues for Color Measurement in Quality Control Applications
Abstract: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.
Document Type: Research Article
Publication date: January 1, 1998
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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