The impact of the hottest JDF on the development o

2022-08-09
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The impact of JDF on the development of post press equipment

the establishment of JDF Standard reflects the overall trend of the in-depth development of digital pre press technology to printing and post press processing. The purpose is to realize the integration of the three main processes of pre press, printing and post press processing, as well as the integration of production activities and business management activities, which is conducive to enterprises to organize production according to standardized procedures. However, it may not be printing companies that bear the brunt of the impact of JDF standards, but companies or departments engaged in equipment and system research and development

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in fact, post press processing has no impact on printing quality, but it affects the quality of printed matter. Printing quality depends on prepress and printing will be destroyed; One of the purposes of establishing JDF standard and developing digital workflow system is to minimize the impact of human factors on the final results and form a stable and continuous production process. Printing quality is controlled by many factors, and the relationship is quite complex. It is not easy to judge the printing quality, because printed matter is first of all visual products, and subjective quality judgment is inevitable. However, subjective quality judgment also brings randomness or personality to the results, and the judgment results vary from person to person

printed matter should be a complete industrial product. In addition to providing graphic content, it should also have the use function that meets the needs of consumers. Sometimes it has to protect the printed content and may also beautify it. The use function or other additional properties of printed matter cannot be provided by prepress and printing process, which is mainly guaranteed by post press processing process

since the post press processing technology is basically irrelevant to the printing quality, the inspection and evaluation method of the post press processing quality is also different from the inspection and judgment of the printing quality, and it should have its own unique inspection method and evaluation standard. However, it must be pointed out that the formulation of JDF standard does not solve the problem of quality inspection and evaluation of post press processing, because JDF standard is neither a printing quality standard, nor a printing quality standard. In fact, JDF standard is used to guide system integration, digital workflow software development and equipment production, consider the standardization of production from a system perspective, and strengthen the connection between production resources and factors

post press processing JDF process

JDF is used to standardize production behavior and guide equipment manufacturing and system software development by defining key printing processes or processes. To sum up, in addition to the 10 general processes involving business activities and enterprise management, there are 28 prepress processes defined by the JDF standard, such as layout control, color control, pre flight inspection, ink area generation, color separation and large version matching; There are two printing processes, traditional printing and digital printing. The early version of integrated digital printing was cancelled because the new version of JDF standard added the combination process node. Although the number is small, there are many control contents, so it is not simple. Post press processing faces a large number of production processes and equipment, so the post press processing process defined by JDF is also the largest, with a total of more than 40 kinds

in general, post press processing is divided into two types: books and periodicals and packaging, but some processes are applicable to both, such as paper cutting, punching, binding and carton packaging. In principle, each post press processing process corresponds to a kind of equipment, which is slightly complex. Generally, the equipment that selects excellent alloy structural steel may be divided into two processes. For example, the equipment that provides die cutting and indentation functions at the same time can be divided into two post press processing processes, die cutting and indentation, but the multi-functional characteristics of post press processing equipment are not as typical as digital printing machines, At present, digital printing machines facing the commercial market are often the integration of prepress (called digital front-end system), printing and post press processing

the post press processing processes related to books and periodicals include case preparation, book cover production, book cover placement, soft cover application, folding, folding, page matching, matching, inserting, spine preparation, gluing, spine back pasting, binding, metal clip binding, plastic comb binding, spiral binding, ring binding, riding binding, sewing flat binding, plastic wire hot binding, metal wire comb binding, capping, sealing and cutting. It can be seen that JDF has fully defined the post press processing process of books and periodicals, which may be related to the equipment manufacturing companies participating in the formulation of standards

the post press processing processes mainly used for packaging include number printing, lamination, indentation and die cutting. It can be seen that JDF does not define the post press processing process of packaging enough. Excellent enterprises from all over the industry gather at exhibitions, which may be the content that needs to be added to the new version of JDF standard

there are many processes that are difficult to define whether they should belong to post printing processing of books and periodicals or packaging and printing processing, such as paper cutting, labeling, punching, stacking, tightening and baling, carton packaging, baling, winding packaging, web slitting, etc

the main purpose of listing these processes is to introduce the overall concept of JDF standard, understand the relationship between JDF standard and prepress, printing and post press processing, clarify what functions can be achieved through JDF standard, or maybe grasp the entry point to solve problems

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