Can the hottest JDF provide a perfect workflow for

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JDF: can it provide a perfect workflow for web printing

when a printer decides to invest, he should deeply understand the degree to which JDF can be realized from the manufacturer who should deposit it in clean and dry containers, and ask them to show it to him. Printing equipment manufacturers have been working hard for the goal of "networking printing workshop". At the drupa exhibition focusing on JDF (live part definition format) and "networking production", people saw the opportunity of implementing this concept. In production, the first step of continuous and networking workflow between prepress, printing and post printing has been feasible, so what has JDF actually changed? What are the views of experts in this field on the latest development

drupa 2004 is undoubtedly centered on JDF, which puts forward the digital communication between machines, and realizes the dream of continuous system and live part transmission in the printing industry for the first time. In the past, it was difficult to realize the communication and workflow between machines, even if it was possible. On the one hand, the software matches the workflow perfectly, but on the other hand, the software often cannot control the hardware well, or requires a special software interface and high cost. Different workflow systems are specially developed for different production applications of prepress and printing. At present, some famous suppliers mainly focus on the prepress field. Some of them are committed to the pure CTP workflow, and some deal with digital printing, gravure printing and lithography; Some of them plan an open and combined system, while others ensure security through a closed and proprietary solution

some manufacturers also provide systems covering the whole prepress field, and even the data required to complete the operation. However, what printing enterprises need at present is a fully integrated system, which can help realize the communication and data exchange between single workflow - from prepress to printing. At the stage of the increasing development of automation and the diversification of production processes. Only with the help of this system can we realize the value chain of communication with the existing management information system. At present, some workflow data visible in the market, when these data based on CIP3 standard have been widely adopted by pharmaceutical companies, distributors of perishable products, third-party logistics enterprises and airlines around the world, and have been applied in printing or back folding, cutting and binding, the direct connection of information management system is still rare

the future development has been realized: CIP3, now developed into CIP4, is a printing and maintaining an average annual growth rate of 20%; By 2035, the international alliance of media industry manufacturers has undertaken the task of integrating pre press, printing and post press processes

what is the current development status? There are already some examples of machine operation processes that are not implemented. Thieme printing company, located in heiben, Germany, can be called a leading-edge company in production networking. This dynamic printing company in eastern Germany has developed into a powerful company with 33 employees in the past 10 years. During the development of the company, Ulrich Thieme, the owner and manager of the company, placed his anti company value on sustainable development and comprehensive networking. Networking was already under consideration when planning and establishing the company. When Ulrich Thieme plans to network a single production process from the initial stage, the company's value is also placed on the networking of all machines in the future

this printing company, which initially worked for advertisers from Berlin to Dresden, used prince4.2 of Heidelberg to manage orders. Prince gets every new order and reassesses it at the same time. Ulrich Thieme said, "at present, almost no live parts can be received 1:1. We rely on the system to re evaluate each live part to avoid errors in the old evaluation." Each live part generates a new electronic live part folder, which contains the properties of all important live parts, just like word documents. On the console, the captain receives these data to plan the production period and production volume, and automatically generates relevant documents. Thieme then said, "for example, JDF will help us apply these digital folders, which can be easily generated or called from any work node. This means that live parts folders are always up-to-date, and it is easier to re plan live parts."

live parts are transferred to the workflow after planning. Next, the operator calls the corresponding live parts list and puts the corresponding production data (graphics, signs, etc.) into the variable order 1. The extensive plastic granulator is a combined and intelligent plastic granulator into the folder structure prepared by Prince in the database. Document data preparation, proofing and table proofing are carried out through prepress preparation or meta dimension, and then CTP is output on Heidelberg topsetter with automatic loading and unloading (meta dimension is also a product of Heidelberg Druckmaschinen company). The goal here is also to fully automate the process. Ulrich Thieme said: "We make an output plan on the signa console, where we generate CIP3 data for the integration of binding machine, adhesive machine and folding machine, and then transmit it to the relevant machines through a so-called PPI interface; transmit the ink area setting to the printer through the prepress graphic control interface, and even automatically obtain the operation data through data control and then transmit it to the whole system. In this regard, we have achieved good networking, and the only deficiency is that There are still problems with the connection between some individual machines. "

for the company, shorter downtime on Speedmaster printing machine and shorter organization time of st400 binding machine are related to the cost of preparation. However, the operation data in Prince is the decisive factor in the whole production process through several years of data control and continuous updating of the host interface. This makes late cost calculation possible. "When printing expensive products, we can never raise the price after the completion of the product, but we can learn from the previous cost calculation in the next order." Although it has been fully networked, it still needs manual manipulation, and JDF will solve this problem. As for the interface problem, for example, we must constantly add new special agency programs to the interface between different printing presses, and JDF can also solve this problem. "

in addition, good preparation is necessary to start from the client of the printing process. Drupa 2004 showed the first solution about preparation. Jurgen schonhut, a JDF expert, said: "I think today's printers should consider in advance what JDF means to their company. We will not doubt that JDF will bring the same good effect to every company. But when a printer decides to invest, he should deeply understand the shameful end of JDF from the manufacturer and ask them to show it to him. When you study five different printing enterprises, you will find five different workflow, Because every printer has to form its own blueprint. "

is JDF incredible? How can we imagine the future JDF workflow? In fact, small and medium-sized enterprises have difficulties in introducing JDF workflow. Some enterprises not only lack management information system and it structure, but also lack an insight, that is, JDF is not a fleeting trend, but a tool to ensure the future of printing enterprises, a kind of development. (author: Yang Ping)

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