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BSI 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
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BSI 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

PUBLISH DATE 2020
PAGES 16
BSI PD ISO/TS 18621-21:2020

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.

This document does not cover any non-adjacent or non-horizontal nor vertical patterns. Due to the used spatial frequency, the Macro-Uniformity-Score does not measure high frequency (fine) patterns such as missing nozzles.

SDO BSI: British Standards Institution
Document Number ISO/TS 18621-21
Publication Date Dec. 2, 2020
Language en - English
Page Count 16
Revision Level
Supercedes
Committee PAI/43
Publish Date Document Id Type View
April 11, 2023 PD ISO/TS 18621-21:2023 Revision
Dec. 2, 2020 PD ISO/TS 18621-21:2020 Revision