PD ISO/TS 18621-21:2020 PDF

Graphic technology. Image quality evaluation methods for printed matter - Measurement of 1D distortions of macroscopic uniformity utilizing scanning spectrophotometers

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Title (English):

PD ISO/TS 18621-21:2020

Graphic technology. Image quality evaluation methods for printed matter - Measurement of 1D distortions of macroscopic uniformity utilizing scanning spectrophotometers

Document status:: Withdrawn
Format:: Electronic (PDF)
Publication date:: December 31, 2020
ICS:: 37.100.10
SKU:: PD ISO/TS 18621-21:2020

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Abstract

What is  ISO/TS 18621-21:2020  about?

ISO/TS 1862121 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. ISO/TS 18621-21 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. ISO/TS 1862121 does not cover any non-adjacent or non-horizontal or vertical patterns. Due to the used spatial frequency, the Macro-Uniformity-Score does not measure high frequency (fine) patterns such as missing nozzles.

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PD ISO/TS 18621-21:2020 PDF

Abstract

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Abstract

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