ISO/TS 18621-21:2020

Name: ISO/TS 18621-21:2020
Brand: ISO
SKU: ISO/TS 18621-21:2020
Price: 76.23 EUR
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Graphic technology — Image quality evaluation methods for printed matter — Part 21: Measurement of 1D distortions of macroscopic uniformity utilizing scanning spectrophotometers

Publication date: Nov 20, 2020

95.99 Withdrawal of Standard Mar 27, 2023

General information

Current stage: 95.99 Withdrawal of Standard Mar 27, 2023

Originator: ISO

Owner: ISO/TC 130 Graphic technology

Type: Technical Specification

ICS: 37.100.10 Reproduction equipment

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Status: Withdrawn

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Languages: English

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Scope

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.

Life cycle

NOW

WITHDRAWN
ISO/TS 18621-21:2020
95.99 Withdrawal of Standard
Mar 27, 2023

REVISED BY

PUBLISHED
ISO/TS 18621-21:2023