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GB/T 17934.7-2021: Graphic technology - Process control for the production of half-tone colour separations, proof and production prints - Part 7: Proofing processes working directly from digital data
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Graphic technology - Process control for the production of half-tone colour separations, proof and production prints - Part 7: Proofing processes working directly from digital data
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GB/T 17934.7-2021
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Basic data | Standard ID | GB/T 17934.7-2021 (GB/T17934.7-2021) | | Description (Translated English) | Graphic technology - Process control for the production of half-tone colour separations, proof and production prints - Part 7: Proofing processes working directly from digital data | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A17 | | Word Count Estimation | 26,20 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 17934.7-2021: Graphic technology - Process control for the production of half-tone colour separations, proof and production prints - Part 7: Proofing processes working directly from digital data
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Graphic technology-Process control for the production of half-tone colour separations, proof and production prints-Part 7.Proofing processes working directly from digital data
ICS 37.100.01
A17
National Standards of People's Republic of China
Printing technology mesh color separation plates, proofs and
Process control for the production of printed matter
Part 7.Proofing process using digital data directly
(ISO 12647-7.2016, IDT)
Released on 2021-05-21
2021-12-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Foreword
GB/T 17934 "Printing Technology, Screen Color Separation, Proofs and Process Control of Production Printed Matter" is divided into 8 parts.
---Part 1.Parameters and measurement methods;
---Part 2.Lithographic offset printing;
---Part 3.Newsprint cold-set offset printing;
---Part 4.Publishing gravure;
---Part 5.Screen printing;
---Part 6.Flexographic printing;
---Part 7.Proofing process using digital data directly;
---Part 8.Direct use of digital data to verify the production process of printed matter.
This part is Part 7 of GB/T 17934.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
The use of the translation method in this section is equivalent to the adoption of ISO 12647-7.2016 "Printing Technology Screen Adjustment of Color Separation Plates, Proofs and Production Printed Matters"
Process control. Part 7.Proofing process using digital data directly.
The Chinese documents that have a consistent correspondence with the international documents cited in this section are as follows.
---GB/T 8941-2013 Determination of the specular gloss of paper and cardboard (ISO 8254-1.2009, ISO 8254-3.2004,
MOD)
---GB/T 10739-2002 Standard atmospheric conditions for handling and testing of paper, paperboard and pulp samples (eqvISO 187.1990)
---GB/T 18721-2002 Printing technology prepress data exchange CMYK standard color image data (CMYK/SCID)
(idtISO 12640-1.1997)
---GB/T 22113-2008 printing technology prepress data exchange label image file format for image technology (TIFF/
IT) (ISO 12639.2004, ITD)
---GB/T 22771-2008 Filtered xenon arc lamp for printing technology printed matter and printing ink to evaluate light resistance (ISO 12040.
1997, MOD)
This section has made the following editorial changes.
---Added a note under 3.3;
---ISO 12642 was changed to ISO 12642-2 in A.1.1;
---GB/T 9851.2-2008, ISO 105-B02, ISO 2470-2, ISO 12647-2 and
ISO 12647-7.2013.
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents.
This part was proposed by the National Press and Publication Administration.
This part is under the jurisdiction of the National Printing Standardization Technical Committee (SAC/TC170).
Drafting organizations of this section. Shenzhen Vocational and Technical College, Shenzhen Yutong Packaging Technology Co., Ltd., Shenzhen Wangying Color Box Paper Products
Co., Ltd., Shanghai Publishing and Printing College, Xiamen Weihaotai Technology Co., Ltd., Yongfa Printing (Dongguan) Co., Ltd., Guangzhou Hengyuan
Color Printing Co., Ltd., Zhejiang Huiri Environmental Testing Co., Ltd., Guangdong Yisheng Testing Co., Ltd., Shandong Gada Testing Co., Ltd., Beijing Jinchen
Sveco Security Printing Co., Ltd., Jiusi Testing Technology (Guangdong) Co., Ltd., Zhejiang Anya Intelligent Technology Co., Ltd., Jiangxi Yongzhuang Technology
Co., Ltd., Yiwu Quanyi Mould Industry Development Co., Ltd., Guangdong Xingyi Digital Printing Co., Ltd., Shaanxi Faxida Electronics Co., Ltd.
Company, Xi'an Nuofang Information Technology Co., Ltd., Shaanxi Runzheng Testing Technology Co., Ltd., Shaanxi Juzhong Zhide Electronic Technology Co., Ltd.
The main drafters of this section. He Songhua, Zhao Gang, Cheng Yanfei, Li Xiaoping, Yang Shengwei, Ge Jizhe, Yin Fushou, Zhang Zhihuan, Wang Qiuju, Nan Shaowei,
Huang Zhen, Marina.
Introduction
ISO 12647-1 provides definitions, general rules, general procedures, material requirements, and material requirements covered in ISO 12647-2~ISO 12647-8
Data definition, measurement conditions and report type.
This part deals with digital proofing, and puts forward requirements for the most stringent proofing part in the printing and publishing market.
This part mainly specifies the target value (or target value group) and tolerance of the basic parameters specified in ISO 12647-1, which are specifically used for data
Word proofing. The basic parameters that define printing conditions include screening parameters (applicable), solid color, printing substrate color, intermediate leveling screen
Color and tone curve. This part also specifies the test methods for the characteristics of digital proofing printed matter and its substrate. These characteristics and stability
Certainty is related to the state of reliability, and therefore to the certification process.
The printing industry widely uses proofing to predict the output performance of digital files, and proofing is printed through a variety of non-printing processes.
And applications to produce high-resolution, high-quality proofs. A characterization data set that defines specific printing conditions provides a basis for prediction.
Usually, specific printing conditions are defined by the color profile of the International Color Consortium (ICC) or related feature data sets.
Both are related to the source data and the printing color defined by the chromaticity. Business organizations or individuals can obtain these data, which are derived from
The printing conditions of the relevant process standards in the ISO 12647 series.
The purpose of proofing printed matter is to simulate as much as possible the visual characteristics of the finished printed product. In order to visually match a specific seal
Brushing conditions, the proofing process needs to define a set of parameters, which are not necessarily the same as the values proposed in ISO 12647-1 or other parts of ISO 12647.
with. This is caused by differences in the colorant spectrum or characteristics such as gloss, light scattering (in the printed substrate or colorant), transparency, etc.
of. In these cases, the spectrophotometric method is better than the density method.
Another problem is the matching between low-weight double-sided printed products and digital proofs made with almost opaque substrates.
Substrates are often used for thermosetting rotary and publishing gravure printing. If the color management features measured on the white backing are used when generating the proofs
Sexual documents, and the printed product is measured on the black backing, which inevitably causes the visual and measurement differences between the two. Because according to
According to the relevant part of ISO 12647, non-opaque printed products printed on both sides must be measured on a black backing. For all interested parties, it is necessary
Fully communicate these possible differences beforehand.
For a long time, neither the characterization data nor the existing criteria and restrictions on satisfactory matching have been consistent, which has led to people
When evaluating the proofing system, a lot of unnecessary effort is spent to understand different but similar applications, and inconsistent results are obtained, so that
The industry is burdened with cost and time. Therefore, ISO 12647 aims to provide the field with standards and related test procedures.
guide.
Appendix A summarizes the requirements for the digital proofing printed matter listed in the main body of this part. In three typical cases, they can be based on their
Relevance trade-off selection.
---Proofing printed matter requirements. This is a proof sheet made for a specific printing condition. If you want to become a printer and
The contract between digital data providers must meet the requirements (certified sample creation).
---Proofing system requirements. This refers to a proofing system including hardware and software from a supplier.
Specific printing conditions must meet the requirements (certified proofing system) to reliably produce digital composite sheets.
---Proofing printed matter production requirements. This means that proofing under certain printing conditions must be in accordance with the use of only one control wedge on site.
Type testing requirements (certified on-site samples).
Printing technology mesh color separation plates, proofs and
Process control for the production of printed matter
Part 7.Proofing process using digital data directly
1 Scope
This part of GB/T 17934 specifies the requirements for the system for the production of hard copy digital proofing printed matter. The proofing printed matter is used for simulation.
The printing conditions defined by a set of characterization data, this section also recommends appropriate test methods related to these requirements.
2 Normative references
The following documents are indispensable for the application of this section. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
ISO 187 Standard atmospheric conditions for the treatment and testing of paper, paperboard and pulp samples (Paper, boardandpulps-Standard
atmosphereforconditioningandtestingandprocedureformonitoringtheatmosphereandconditioning
ofsamples)
ISO 2813 painting and varnishing in the geometric direction of 20 °, 60 ° and 85 ° gloss value definition (Paints and varnishes-De-
terminationofglossvalueat20°,60°and85°)
ISO 3664 Printing Technology and Photography Observation Conditions (Graphictechnologyandphotography-Viewingcondi-
tions)
ISO 8254-1-Measurement of glossiness of paper and paperboard. Part 1.Using 75° of condensed beam, TAPPI method (Paperand
board-Measurementofspeculargloss-Part 1.75degreeglosswithaconvergingbeam,TAPPImeth-
od)
ISO 12040 Printing Technology Prints and printing inks use filtered xenon arc lamp light fastness evaluation (Graphictechnolo-
gy-Printsandprintinginks-Assessmentoflightfastnessusingfilteredxenonarclight)
ISO 12639 Printing Technology Prepress Data Exchange Label Image File Format (TIFF/IF) for Graphic Technology [Graphic
technology-Prepressdigitaldataexchange-Tagimagefileformatforimagetechnology(TIFF/IT)]
ISO 12640-1 Printing Technology Prepress Data Exchange Part 1.CMYK Standard Color Image Data (CMYK/SCID)
[Graphictechnology-Prepressdigitaldataexchange-Part 1.CMYKstandardcolourimagedata
(CMYK/SCID)]
ISO 12642-2 Printing Technology Four-color Printing Characteristic Description Input Data Part 2.Extended Data Set (Graphictech-
nology-Inputdataforcharacterizationof4-colourprocessprinting-Part 2.Expandeddataset)
ISO 13655.Spectral measurement and chromaticity calculation of printed images in printing technology (Graphictechnology-Spectralmeasure-
mentandcolorimetriccomputationforgraphicartsimages)
ISO 15397.2014 Printing Technology-Printing Paper Characteristics Communication Rules (Graphictechnology-Communication
ofgraphicpaperproperties)
3 Terms and definitions
The following terms and definitions defined by ISO 12647-1 apply to this document.
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