GB/T 44035-2024Imaging materials - Pictorial colour reflection prints - Methods for evaluating image stability under outdoor conditions (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting:

This document is equivalent to ISO 18930:2011 "Method for evaluating outdoor image stability of color photographs of imaging materials":

The following minimal editorial changes were made to this document:

--- Added notes to Tables A:1 and A:2 in Appendix A:

Introduction

Digitally printed images are exposed to outdoor applications in many cases and are subject to certain aging corrosion: This document specifies the test image stability Standard test procedure for evaluating image stability after actual outdoor weathering or accelerated weathering in the laboratory:

The desire to obtain test results more quickly (than actual outdoor) led to the development of simulated weathering tests: However, accelerated corrosion weathering tests are only Testing is only valuable when it is correlated with actual outdoor performance: Factors that can cause image quality degradation in outdoor testing include:

Including light, moisture, heat, ozone, local climate and day and night changes: In the accelerated simulation test, key factors such as light, moisture and heat are very important:

Yes: Using a xenon arc lamp with a daylight filter as the spectral power distribution simulation of sunlight has become the industry standard procedure for the most accurate simulation:

A xenon arc lamp and a "daylight" filter, combined with water spray and high temperature, form the basis of laboratory accelerated weathering testing:

The accelerated weathering test procedures described are intended to provide a means of predicting performance under actual outdoor exposure:

Image material color photo outdoor image stability Evaluation Method

1 Scope

This document describes the test equipment and test procedures for testing the color stability of color images in outdoor conditions:

Instead, it provides a way to measure changes in images during image aging and indicates the images that should be reported:

The method enables the user to determine the test endpoint for the simulated effect:

This file is for images produced from digital print media: For example:

---Printing on coated paper, coated and uncoated transparent or opaque films, vinyl, polyester, synthetic paper and other plastic substrates products, laminated and non-laminated printed photographs;

--- Dye-based and pigment-based inkjet printing of photographs using water-based, solvent-based, phase-change or ultraviolet (UV) curable inks;

---Thermal imaging dye transfer photos;

---Sublimation photos;

---Digitally printed dye diffusion transfer photos;

---Liquid and dry toner electrostatic printing photos;

---Liquid toner electrostatic printing photos;

---Digital prints made from traditional chromogenic and silver dye-fixed photographic materials;

---Color thermal imaging photos:

In these digital prints, the layout of ink is controlled by digital pixel information, and all the printing system's There are settings and controls: In contrast, with many analog printing systems, the control of the ink layer thickness can be adjusted manually: Outdoor the window graphics for indoor spaces, where sunlight is filtered by a layer of glass, comply with ISO 18937:

This document does not include procedures for testing the physical stability of images, supports, or binding materials: However, in some cases, Stability, some physical changes of materials (such as support body becomes brittle, image layer cracks, or image layer falls off from support body, etc:) will determine the stability of photo materials:

The service life of the material:

Note: Image print stability results are determined by the printer model, ink set, print mode, print resolution, and media combination:

and/or media, and are not intended for images produced with other printer models, ink sets, print modes, print resolutions, and media combinations:

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document:

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document:

gy-Densitymeasurements-Part 3:Spectralconditions) Note: GB/T 11501-2008 Photographic density measurement Part 3: Spectral conditions (ISO 5-3:1995, IDT) ISO 13655 Graphic technology - Spectrum measurement and colorimetric calculation of image art Note: GB/T 19437-2004 Printing technology Spectral measurement and colorimetric calculation of printed images (ISO 13655:1996, IDT) ISO 11664-4 Colorimetry-Part 4: CIE1976 L*a*b* color space