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BSI PD ISO/TS 18621-21:2020

$102.76

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

Published By Publication Date Number of Pages
BSI 2020 16
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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.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Requirements
4.1 Principles
4.2 Apparatus
4.2.1 General
11 4.2.2 Measurement condition
4.3 Procedure
4.3.1 Test pattern
4.3.2 Printing and measuring
12 4.4 Evaluation
13 4.5 Reporting
14 Annex A (informative) Recommended tone value combinations
15 Bibliography
BSI PD ISO/TS 18621-21:2020
$102.76