Introduction to the advantages and barriers of dig

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Introduction to the advantages and barriers of digital workflow

at present, the concept of Prepress digital workflow has been widely accepted by the industry. 2. Avoid sample injury during sample preparation; Many printing enterprises have introduced digital workflow, such as products of founder, Kodak, screen, Heidelberg and other brands, and integrated the previously independent rip systems, output systems and jigsaw systems, significantly improving the pre press work efficiency and quality. The newspaper industry has always been the leader in the application of new printing technologies. The application of digital workflow introduction project in the newspaper industry is rapidly popularized, which has played an obvious role in improving the timeliness of publishing and ensuring the safety of publishing

as people deepen their understanding of technology, we find that the digital workflow is not as perfect as the suppliers say. Compared with Rip system, the digital workflow has made great progress, but it is not the ultimate product. As far as the product itself is concerned, there is still room for further improvement and development, such as remote control, architecture arrangement, running speed, function integration, etc. with the development of demand and technology, it still needs to make continuous progress. In terms of function improvement and perfection, it also needs to be continuously optimized

here, I would like to take the current digital workflow commonly used in the newspaper industry as an example for some simple discussion. Please criticize and correct any inadequacies

advantages of process

the introduction of the concept of process in prepress work is a prominent achievement in the development of prepress technology. The distributed file management and output processes such as receiving, composing, rip, output, etc. are transformed into automatic workflow through workflow, and the standardized and open PDF is used as the intermediate format to ensure WYSIWYG in the operation process, which is in line with the current development trend of digital technology. It not only greatly improves the efficiency, but also is more conducive to the balanced control of inspection and output equipment. The greatest significance of workflow application also lies in improving the automation of prepress operation. The particle can be used as the transport carrier of podophyllotoxin (anti-cancer drug), which improves the output timeliness and reduces the probability of error. The application value of the process is mainly reflected in several aspects:

1 Automation of document selection and operation

the automatic workflow applies a large number of hot folders and automatic identification technologies to realize the automatic identification and processing of documents, and can realize the automatic circulation of documents between various work modules according to specific newspaper categories, significantly improving the work efficiency

2. Realizing automatic composition and convenient template modification and conversion

automatic composition is a visible change after the introduction of workflow. Previously, the process of transferring files into the composition system through the composition software was simplified. The system can automatically transfer the layout files into the composition system according to the set rules and plans. The automatic layout arrangement is carried out according to the predetermined rules, and the modification and conversion of the composition template are also greatly simplified. This value is quite obvious for a newspaper publication with multiple pages output at the same time. It is estimated that at least 10 minutes can be saved in the process of composing a 32 page newspaper

3. It can succinctly realize the final output layout conversion between different output devices

because different printing machines, different CTPs and imagesetters output different formats, versions and composition methods, they must correspond to different composition templates. Newspaper printing has strong timeliness, and the printing machine conversion arrangement occurs from time to time. The template conversion using an independent composition software generally requires the re insertion and adjustment of each document, that is, all operations. After the workflow is adopted, it is only necessary to select each assembled document and conduct one-time template conversion, which can convert all layout documents to another output device or use other templates. This is especially useful for newspaper printing with high timeliness requirements and diversified equipment types

4. The system function integration

digital workflow integrates almost all prepress operations such as page adjustment, composition, hanging, imagesetter and CTP drive, layout preview, dot matrix inspection, CIP3 export, and converts the artificial data flow into the automatic data flow within the workflow. All operations can be directly realized on a client computer to ensure the prepress operation efficiency

5. The addition of new functions

after the workflow is adopted, new functions such as CIP3 output, layout preview, new points, ink reduction software, new version compatibility, etc. can be integrated to make the system functions more comprehensive and automated, and create conditions for future functional integration with printing, post press equipment and ERP management

deficiencies and barriers

from the perspective of the current mainstream digital workflow, the technical status in many aspects still lags behind the development of demand and the development of electronic information technology, that is, the latest version of workflow, and the contradiction between technology and demand still exists

1 . The main operating environment of workflow lags behind the development of the Current Windows operating system and server hardware

this is a prominent problem in many software development in China. The latest software often cannot run under the latest operating system, and the efficiency of computer hardware cannot be fully utilized. Prepress digital workflow is a set of system based on server and client. All functions need to be calculated on the server, which puts forward higher requirements for the calculation ability of the server. Especially when there are many clients, the calculation pressure is very high when submitting jobs centrally. However, at present, many workflows are based on Windows 2003, some are under Windows 2000, and most databases are early products. The 32-bit operating system only supports 4G memory, and the server cannot give full play to its efficiency. Moreover, the CPU of the server has been multi-core and multi-threaded, but the workflow can not fully manage and use these multiple processing cores to realize parallel jobs

2. Most of the digital workflow is single server computing and management, and the efficiency of the whole system can not be brought into full play.

most of the digital workflow is b/s system, and the client is only an operating terminal without computing function. This is a big problem in the workflow, that is, there is only one computer for computing and service management, and the server has backup, but it is not a real-time hot backup, Once there is a problem with this management and computing server, the whole system will be paralyzed. Unlike the previous rip type distributed system, it has a stronger role of mutual substitution and backup. This deficiency is more prominent in the newspaper industry

3. Compatibility with old versions of software is also a big problem

as the workflow is newly developed in recent years, although it is the upgrade of the original rip and other related products, considering the output of the latest PDF files, and the requirements of compatibility with PS files and PDF files at the same time and connection with various original pre press mainstream typesetting software, the functional interface settings are becoming more and more complex, and the hidden dangers of mutual conflicts are difficult to avoid. For example, hierarchy, hollowing out, anti white, overprint, etc., the result description specifications generated by different software are different, and the same processing module is often used to deal with one problem while losing the other. Similar failures have occurred in many newspapers, which is also a big hidden danger

4. There is still room for further expansion of the connection between digital workflow, ERP and printing press

erp realizes the real-time recording and control of the production process through the connection with digital workflow, which is an important part of the production process control. However, the current reality is that there are certain difficulties in the connection between the two systems of the same company. The JDF job ticket within the workflow provides a standard mode for ERP connection

5. Digital workflow also has certain technical barriers

pdf and a tiff encryption have become a difficult point for newspaper users. In order to control the number of CTPs and imagesetters of customers, some workflow and the new version of rip completely turn off the standard one bit TIFF export function, which brings a lot of inconvenience to users. It is not only necessary to add another TIFF export and control module, which increases the purchase cost, but also the option to purchase CTP again is limited, which increases the difficulty of the existing CTP access workflow. Intermediate format encryption is a common practice for developers to protect commercial interests. However, PDF files, as standard format files, can have more applications, such as ink reduction software, preflight software, proofing software, connection with external businesses and third-party systems. They are all based on standard PDF format files. Some workflow developers will encrypt pdf files in the middle of the operation process, and the encryption intensity is very high, In essence, it affects the right of users to choose PDF general processing and optimization software. Encrypting PDF and one bit tiff, two standard format files, will completely restrict users to work within the scope of the process. The digital workflow will not be open, and its advantages will be greatly reduced

technology improvement space

in the future, digital workflow will become the mainstream mode of prepress production. Providing more automation functions and more comprehensive solutions through workflow will be the direction of workflow development in the future

first, optimize and adjust the system architecture. For newspaper applications, software and hardware backup is an important way to ensure publishing security. The newspaper edition of digital workflow must fully consider the backup function of functional modules, and allow users to disconnect the network to realize stand-alone operation when necessary, which not only improves the efficiency, but also improves the operation guarantee ability. At the same time, it is necessary to give full play to the functions of the client computer, apply the concept of cloud computing to integrate the idle computing capacity in the system, and realize the instant hot backup of the server. We also found that some workflows are designed to be network-based, but the operation is based on a single machine. After a turn up, it turns back. The efficiency is not improved, but the operation speed is restricted by the network. With the popularization of CAT6 and Gigabit technology, how to make full use of network computing capability should also be considered by workflow

the second is to update the operating system platform, apply the achievements of computer technology development to the workflow as soon as possible, and make full use of the multi-core and multi-threaded operation ability of the new computer in the functional design, so as to give full play to the functions of the computer and improve the operation efficiency of the system

the third is function enhancement. On the one hand, taking advantage of the characteristics of automatic flow of information in workflow documents, more functions are developed and integrated. In 2016, Dalian Rongke energy storage obtained 200mw/800mwh energy storage peak shaving power station project is a landmark event in the utilization of all vanadium flow battery technology, such as proofing, authorization modification, electronic software patching, automatic inspection, identification of document generation system, printing interface, automatic version transmission interface, ERP interface, automatic identification of file name Functions such as the definition and identification of the printing press loading mode provide users with a more comprehensive solution. At the same time, the original functions are constantly upgraded and improved. Repair is the optimization and upgrading of the output functions, such as the development of new adding modes and the improvement of point growth models

fourth, strengthen the ability to connect with the printing press, post press and management system. At present, the workflow is mostly based on JDF work ticket, which is a standard and open format. It can form a CIP4 workflow together with CIP3 data, so as to form a system for document receiving management, printing press, post press processing and management system. Fifth, be more open to third-party software

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