International Standard
ISO/TS 18621-21:2023
Graphic technology — Image quality evaluation methods for printed matter — Part 21: Measurement of 1D distortions of macroscopic uniformity utilizing scanning spectrophotometers
Reference number
ISO/TS 18621-21:2023
Edition 2
2023-03
International Standard
Read sample
ISO/TS 18621-21:2023
83420
Published (Edition 2, 2023)

ISO/TS 18621-21:2023

ISO/TS 18621-21:2023
83420
Language
Format
CHF 63
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Abstract

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.

General information

  •  : Published
     : 2023-03
    : International Standard published [60.60]
  •  : 2
     : 7
  • ISO/TC 130
    37.100.10 
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