ISO/PRF TS 18621-21

Graphic technology — Image quality evaluation methods for printed matter — Part 21: Measurement of 1D distortions of macroscopic uniformity utilizing scanning spectrophotometers

General information

Current stage: 50.20 Effective date: Feb 1, 2023

Originator: ISO

Owner: ISO/TC 130

Type: Technical Specification

ICS: 37.100.10

Languages: English

Buying

Status: Draft

PDF - EC$183.61

Paper - EC$183.61

PDF and Paper - EC$367.22

Language

Language in which you want to receive the document.

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

PREVIOUSLY

Revises
ISO/TS 18621-21:2020

NOW

IN_DEVELOPMENT
ISO/PRF TS 18621-21
50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Feb 1, 2023

Preview

Only informative sections of projects are publicly available. To view the full content, you will need to members of the committee. If you are a member, please log in to your account by clicking on the "Log in" button.