ISO/TS 23031:2020
Graphic technology — Assessment and validation of the performance of spectrocolorimeters and spectrodensitometers
This document describes procedures for the assessment and validation of the performance of an optical spectrometer intended for use in capturing the spectral reflectance factor or the spectral radiance factor of printed areas comprised of non-fluorescent or fluorescent materials, respectively. While it does not describe the application to transmitting materials directly, many of the procedures can be applied to transmitting systems by backing them with a reflective white backing material.
This document does not address spectral measurements appropriate to other specific application needs, such as those used during the production of materials (e.g. printing paper and proofing media), which are well described by ISO standards under the jurisdiction of ISO/TC 6. It does not describe the special requirements for testing instruments that make in-process or online colour measurements.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Known practices for instrument characterization
4.1 Repeatability
4.1.1 General
4.1.2 Procedures
4.2 Reproducibility
4.2.1 General
4.2.2 Determination of temporal reproducibility
4.2.3 Determination of instrument reproducibility
4.2.4 Data collection and analysis
4.3 Accuracy
4.4 Quality of the influx spectrum
5 Reference materials for assessment of performance
5.1 Reference materials for comparison to the manufacturer’s specifications
5.2 Reference materials for comparison between identical models
5.2.1 General
5.3 Reference materials for comparison between different models
5.3.1 General
5.3.2 Measurements
5.3.3 Determination of instrument differences
6 Reported performance results
6.1 Conformance to factory specifications
6.2 Inter-instrument agreement
6.3 Inter-model agreement
6.4 Repeatability
6.5 Reproducibility
6.6 Assessment of accuracy
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Known practices for instrument characterization
4.1 Repeatability
4.1.1 General
4.1.2 Procedures
4.2 Reproducibility
4.2.1 General
4.2.2 Determination of temporal reproducibility
4.2.3 Determination of instrument reproducibility
4.2.4 Data collection and analysis
4.3 Accuracy
4.4 Quality of the influx spectrum
5 Reference materials for assessment of performance
5.1 Reference materials for comparison to the manufacturer’s specifications
5.2 Reference materials for comparison between identical models
5.2.1 General
5.3 Reference materials for comparison between different models
5.3.1 General
5.3.2 Measurements
5.3.3 Determination of instrument differences
6 Reported performance results
6.1 Conformance to factory specifications
6.2 Inter-instrument agreement
6.3 Inter-model agreement
6.4 Repeatability
6.5 Reproducibility
6.6 Assessment of accuracy
Bibliography