BS PD ISO/TS 18621-21:2020
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Graphic technology. Image quality evaluation methods for printed matter-Measurement of 1D distortions of macroscopic uniformity utilizing scanning spectrophotometers
This document defines a measurement method for the evaluation of distortions in the macroscopic uniformity of printed areas that are oriented in the horizontal and vertical direction, such as streaks and bands.
It provides requirements for the layout of the test form, the use of a colour measurement device taking measurements in a 2D sampling grid, and the formula to compute the Macro-Uniformity-Score.
All current amendments available at time of purchase are included with the purchase of this document.
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