GB/T 38153.1-2024Graphic technology - Laboratory preparation of test prints - Part 1: Paste inks (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 is required.

This document is part 1 of GB/T 38153 "Laboratory preparation of test specimens for printing technology". GB/T 38153 has been published.

The following sections.

--Part 1: Paste inks;

--Part 2: Liquid ink;

--Part 3: Screen Inks.

This document replaces GB/T 38153.1-2019 "Laboratory preparation of test specimens for printing technology Part 1: Paste inks" and Compared with GB/T 38153.1-2019, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

-- Added "Preparation of test prints (e.g. offset and letterpress printing) using a printability tester (IGT type) and a printability tester (prüfbau type)" "Test procedures for reference optical density and reference ink film thickness" "Use of current model printability tester" Methods of use" (see Chapter 1);

-- Added "running-in" (see 3.1), "inking device" (see 3.3), "ink system" (see 3.4), "liner" (see 3.5), and "printing roller" (see 3.7), "reference material" (see 3.8), "rubber" (see 3.9), "substrate carrier" (see 3.11), "ink distribution roller" (see 3.12) terms and definitions;

--Changed the description of the "Instrument" chapter (see Chapter 4, 3.2 of the 2019 edition);

--Changed the description of the "Principles" chapter (see Chapter 5, 3.1 of the 2019 edition);

--Added a chapter on "Preparation" (see Chapter 6);

--Changed the description of the "Steps" chapter (see Chapter 7, Chapter 4 of the 2019 edition);

--Added a chapter on "Evaluation" (see Chapter 8);

-- Changed the description of the "Report" chapter (see Chapter 9, Chapter 5 of the 2019 edition);

-- The appendix "Requirements for the Preparation of Test Prints for Printability Testers" (see Appendix A of the 2019 edition) was deleted;

--Added the appendixes "Run-in of elastic rubber rollers" (see Appendix B) and "Maintenance of elastic rollers and other materials" (see Appendix C).

This document is equivalent to ISO 2834-1:2020 "Laboratory preparation of test specimens for printing technology - Part 1: Paste inks".

Introduction

In order to establish and improve the standard system of laboratory preparation methods for test samples, so as to ensure the repeatability of laboratory sample preparation and the credibility of data GB/T 38153 "Laboratory Preparation of Printing Technology Test Samples" was formulated.

It consists of 3 parts.

--Part 1: Paste ink. The purpose is to standardize the level of laboratory preparation of paste ink prints to ensure the color difference and reflection density measurement the test repeatability is good, which improves the credibility of the test results of the printed sample performance.

-- Part 2: Liquid inks. The purpose is to standardize the level of liquid ink prints prepared in the laboratory to prevent the occurrence of errors in images and test results.

The influence of the change of the process on the test results and specimen performance.

-- Part 3: Screen ink. The purpose is to evaluate the optical properties of screen ink such as transparency and reflection density through optical testing.

There are also unified standard specifications for the gloss, light resistance, and chemical, physical and mechanical resistance of ink prints.

This document is part 1 of GB/T 38153 and describes the preparation of laboratory test specimens for paste inks.

The method is used in other international standards such as ISO 2846-1, ISO 2846-2 and ISO 2836 and will become part of the International Organization for Standardization/Paper, Board and Several technical committees on pulp (ISO/TC 6/SC 2) and printing (ISO/TC 130) have jointly developed the basis for a printability standard.

This document describes the use of the IGT and prüfbau printability testers for printing on paper, cardboard, metal, aluminum foil and other suitable substrates.

The steps taken when preparing printed products are mainly to measure the reference optical density of the substrate and the reference ink density in g/m2.

Other types of inks, such as liquid inks for gravure or flexographic printing as specified in ISO 2834-2 and liquid inks for silk screen printing as specified in ISO 2834-3 Screen printing inks, similar to this document.

In this method, a step is added to perform periodic tests with reference materials to check the aging of the materials used (such as rubber and ink) Condition.

Laboratory preparation of test prints for printing technology Part 1: Paste Ink

1 Scope

This document describes the printing performance of paste inks on paper, board, metal, foil and other suitable substrates using a printability tester (IGT type).

Test procedure for preparing test samples (e.g. for offset and letterpress printing) using a printability tester (Prüfbau type).

This document describes the test procedures for reference optical density and reference ink film thickness.

This document describes how to use the current model printability tester. Most of the steps described are also applicable to older models, but may require Perform additional steps or conversion settings to make them comply with the requirements of this document.

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.

ISO 5-4 Photography and graphic techniques — Density measurement — Part 4: Geometric conditions for reflection density technology-Density measurements-Part 4: Geometric conditions for reflection density) Note. GB/T 12823.4-2008 Photographic density measurement Part 4: Geometric conditions for reflection density (ISO 5-4.:1995, IDT) ISO 187 Standard atmospheres for temperature and humidity treatment and testing of paper, board and pulp, and procedures for temperature and humidity treatment of specimens (Paper, board and pulps-Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples) Note. GB/T 10739-2023 Standard atmospheric conditions for handling and testing of paper, paperboard and pulp specimens (ISO 187:2022, MOD) ISO 2846-1 Graphic technology — Four-color printing inks — Colour and transparency — Part 1: Sheet-fed and heatset offset printing (Graphic technology-Colour and transparency of printing ink sets for four-colour printing-Part 1: Sheet-fed and heat-set web offset lithographic printing) Note. GB/T 30329.1-2013 Printing technology Four-color printing ink color and transparency Part 1: Sheet-fed and heatset web offset printing (ISO 2846-1:2006, MOD) ISO 5631 (all parts) Paper and board—Determination of color—Diffuse reflectance method lour by diffuse reflectance) Note. GB/T 40969-2021 Paper and board—Determination of color (D50/2° diffuse reflectance method) (ISO 5631-3:2015, MOD) ISO 13655 Graphic technology—Spectral measurement and colorimetric calculation of graphic art images surement and colorimetric computation for graphic arts images) Note. GB/T 19437-2004 Printing technology - Spectral measurement and colorimetric calculation of printed images (ISO 13655:1996, IDT)

3 Terms and Definitions

The following terms and definitions apply to this document.

The URLs for terminology databases used for standardization maintained by ISO and IEC are as follows.