A New Method of Measuring Gloss Mottle and Micro-Gloss Using A Line-Scan CCD-Camera Based Imaging System

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Solid area quality is one of the fundamental attributes that contributes to the perception of overall image quality. Area coverage, darkness (such as density, intensity, L*), gloss, and solid area mottle are all aspects of solid area quality that are routinely quantified.

For example, measurement of overall gloss is quite common using commercially available glossmeters. And in recent years, many methods of quantifying solid area mottle have been developed and presented to the industry.

One critical aspect of solid area quality, referred to as gloss mottle, has not been addressed as widely. Gloss mottle is the appearance of variations in the magnitude of gloss across a surface. It can be comprised of both high and low frequency components and is inherently difficult to characterize.

In this paper, a new method for measuring gloss mottle will be proposed. A CCD-camera based system will be described and results will be presented that apply to both solid area gloss mottle and the gloss mottle of coatings that impact the quality of materials such as linerboard.

Document Type: Research Article

Publication date: January 1, 2001

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  • 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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