The meaning of international printing standards an

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Introduction to the meaning of international printing standards and norms

in the printing industry, competition is everywhere, but the profit is usually very low, and customer satisfaction and retention rate are closely related to the quality of each service. In recent years, the development of data standards in the printing industry has made great progress. Among them, the most well-known are those market-oriented standards, such as postscript and PDF. Nowadays, because it is adopted by more and more printers, other important quality control standards and norms are also widely accepted by the international community

standard, method, or specification

the value of standards is well known. However, people are not very clear about how to realize standards and the unique vocabulary and abbreviations of printing standards. It is one of the mistakes that people often make to confuse standards, norms and methods. An increase of 170% year-on-year (2) 20%

the standard is the basis for comparison and the reference point for evaluating other things. The international organization for Standardization (ISO) further defines standards as: documents, rules, guidelines or characteristics formulated by consensus, recognized by authoritative institutions, and available for reuse on a large scale; It is applicable to some activities or corresponding results, with the purpose of achieving the optimal order in a specific environment

standards are different from specifications: they are widely used, and when exploring the new development path of plastic granulator technology, they have passed the official evaluation and approval procedures of a management organization (such as ISO). In some countries, ISO standards are equivalent to laws

on the other hand, a specification is a detailed description of a work design standard. Gracol or the measurement of spring deformation and swop under a certain experimental force is the printing industry specification, which uses accurate feature data sets to specify specific printing processes and materials

method is defined as something or the way, technology or procedure of doing something. For example, G7 is the method used to adjust the proofing and/or printing system to achieve the desired gray balance and gradient curve

simply put, methods and specifications are the ways to enable you to achieve the expected standards. Many methods and specifications can help you achieve the ISO

12647 goal, including the G7 standard of IDE Alliance (neutral printing density and gray balance), spop (rotary offset printing specification),

PSO (offset printing process standard from Fogra Association in Germany), and japancolor (from Japan printing machinery association)

iso, gracol, spop, G7, PSO and japancolor


iso12647 standard (printing technology, color separation, sample sheet and processing control of printed products) is developed on the basis of comprehensive data from many national printing quality committees around the world. It is a series of standards that provide a minimum set of parameters for the technical attributes and visual features of various printing processes (offset printing, gravure printing, flexographic printing, etc.). The standard provides manufacturers and printing practitioners with guidelines to help set the equipment to standard conditions. The measurement data from these printing plants can be used to create ICC color description files and generate proofs that match the printing colors. In short, the use and scope of application of film pendulum impact testing machine:

iso12647 standard is helpful for information exchange between printing practitioners, prepress departments and print buyers

iso12647 is a standard based on ink, paper, measurement and visual observation conditions. This standard includes many parts. In each part of iso12647 standard, for different printing processes, the minimum value of the process parameters is defined:

ISO: process control of eye tone color separation samples and printed products: parameters and measurement conditions

iso: offset lithography

iso: cold set offset printing of paper

iso: Publishing gravure printing

iso: silk printing

iso: flexographic printing

iso: sample production directly from digital data

gracol's full name is generalrequirementsfonapplicationsincommercialoffset lithography, which means the general requirements for commercial offset printing applications. Gracol is a color reproduction specification for sheet fed offset lithography. According to ISO international printing standard, gracol7 adopts neutral gray printing density curve or takes NPDC as the core content to standardize the standard conditions and implementation methods of printing

The processstandardoffset (PSO) of Fogra association is formulated by Fogra, an image technology research association located in Munich, Germany, for BVDM (German printing and media industry alliance), for the implementation of German printing industry. PSO is also based on the printing process standard ISO specification. Like gracol, PSO strictly follows the ISO specification and adds some supplementary specifications, especially for digital proofing, or in the case of conflict with the field color, the use of halftone color priority

Fogra is promoting "media standard printing 2010-", which is a technical guideline for data, film, proofing and finished product printing. This code is the summary version of PSO specification, including the latest update of ISO standard. At present, the German version of this document can only be accessed through the following link; The English version is expected to be available by the end of March 2010

in fact, the difference between PSO and gracol is very small. Both of them advocate that the intermediate tone control is more important than the field color control

swop standard is for web offset printing. Swop is a color reproduction specification for web offset printing. Swop specification is applicable to rotary offset printing using ink and paper specified by ISO. There are two swop specifications: swop3 is used for printing on No. 3 paper, and swop5 is used for printing on No. 5 paper

g7 this control method from proofing to printing provides a relatively new method for printing machine and/or proofing color calibration. From print buyers to design agencies, then to printing houses, and finally back to print buyers, G7 has completely established a closed-loop vision based control method. Using this method, we can actually print on any kind of printing machine or substrate, while retaining the common and consistent visual effects. G7 is not only suitable for commercial printing, but also for publication and paper printing, flexographic printing, silk and inkjet printing

g7 is based on data imaging, spectrophotometry and computer direct plate making technology. It is based on the theory that the visual effect, that is, how an image looks in people's eyes, from dark tone to bright tone, is mainly controlled by gray tone, rather than measuring the area of printing points. G7 is named after this gray scale calibration technique (g) and seven ISO inks (7); It focuses on the gray balance data of bright and middle tones, rather than density targets, such as the field density and point enlargement value of each color. G7 gives the definition of gray balance and neutral gray printing density curve (NPDC), and takes these as the basis for calibration and image reproduction, so as to ensure that documents created by G7 method have similar visual effects when printed by any printing process

swoop, gracol, and G7 are registered trademarks of IDE alliance; As a non-profit industry association, IDE alliance guides and provides printing methods, specifications and standards in the United States

japancolor is a specification and certification system developed by the Japan printing machinery association, which aims to encourage the printing industry in Japan to widely adopt printing standards. Japancolor conforms to ISO standard and is similar to gracol and PSO specification; It provides guidelines for sheet fed offset printing, newspaper and web offset printing, and these guidelines have been specially revised to meet the special needs of the Japanese printing market

gracol, spop, PSO and japancolor are all designed to help printers realize ISO standards. G7 is a method for implementing gracol and swop

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