Development of prepress automation
Since the development of computer technology led the so-called third wave of digital revolution, computers have indeed played an indispensable role in various fields of industrial production, and personal computers started from the development of desktop publishing systems until today to completely replace the traditional manual process of color The electronic prepress system can be said to give full play to the effectiveness of the computer. At present, it has continued to develop toward a more concise and automated process and to improve productivity and convenience. The PDF process and the introduction of the concept of digital masters are the best examples.
2. Development of printing press automation
In addition to increasing speed and printing volume, printing machines have spared no effort in the development of automation and digitization in recent years. For example, more automated printing machines include automatic plate change, automatic car washing, and increased convenience and precision of calibration. In addition to the accuracy of cross-line overprinting, ink control and water-ink balance also require the most experience and time-consuming materials. Therefore, printing machine manufacturers have successively launched the "remote control ink tank key" with the "plate scanner" in order to obtain the distribution of the printing pattern in the printing plate before the official start of printing and pre-calibrate the ink tank key to greatly reduce the adjustment. Time, coupled with the "automatic measurement and feedback system of print sample concentration" to maintain stability in the printing process, reduce human dependence and negligence.
3. Development of post-press processing automation
As the demands of consumers increase, the variety and complexity of post-press processing also increase day by day, and various binding requirements have also produced relatively automated but complicated post-binding processing tools, such as computer automatic cutters, automatic hardcover binding lines However, the small and diverse market requirements make these tools often change settings, which is time-consuming and error-prone.
4. Integration of CIP3
The three areas mentioned above have achieved good results under the development of their respective digitalization and automation, but they are facing an increasingly competitive market, a small number of diverse needs, and the compression of delivery times, so that the printing industry must further conceive How to shorten the process and reduce manpower. In fact, when reviewing the three prepress processes, we can find that a lot of information is entered repeatedly, and a lot of information is repeatedly calculated. Among them, the default value of the ink tank key is the most obvious, and there is the most room for improvement, and the largest As mentioned earlier, the printing machine is equipped with a "plate scanner". Before the official printing, the plate is scanned to obtain the distribution of the print pattern in the plate. The ink tank key is pre-calibrated, but the plate scanner has been available since the advent However, its practical level has always been questioned, because the printing plates of different brands and models have different emulsion compositions, and the colors and even the contrasts displayed are also different. The data errors obtained after scanning are quite large. The high-quality color prints are popular on 175 lines, the dots are very small, the size of the plate scanner must be large, and the resolution must be high. As a result, the scanning speed cannot be increased, which seems unrealistic.
In the past, the distribution and adjustment of the ink keys of printing presses was time-consuming and laborious. Usually, it took several attempts to obtain satisfactory results, and it required tens of sheets of offset paper.
The distribution of the ink keys of the printer can now be sent to the printer for automatic control via the PPF standard format of CIP3, which can be generated by the prepress system.
In the field of highly computerized prepress, the PostScript standard page format language has long been used, which is interpreted by the RIP dot processor and then converted into dot data, which is matched with the layout software, so in fact, the "plate scanner" The distribution data of the network points that you try to obtain will exist digitally after the completion of RIP. Therefore, the only problem is how to make the control computer of the printing machine interpret the dot signal generated by RIP.
In the field of pure computer technology, it is not difficult to achieve the above-mentioned objectives, but early pre-press manufacturers and printer manufacturers are developing their own computer technology, the hardware and software used are not the same, how to integrate a common industry The standard is the same as that of music CDs in the world, and it is not necessary to make the mistake that the TV system will be divided into NTSC and PAL. Therefore, the CIP3 consortium has jointly developed a standard PPF (Print Production Format) format to facilitate the exchange of file information.
CIP3 PPF format binding equipment can also directly retrieve the information provided by the prepress process for automatic control.
5. Import of process information
CPP3's PPF format focuses on information sharing and barrier-free transmission between the pre-press, printing and post-press processing, but there are still some improvements in the production process, such as the work schedule of the production plan. According to the customer's delivery time, the experienced workman can make a comprehensive production plan after making a comprehensive judgment on the production status of the factory and the raw material inventory. If this part can be automated, it will be more perfect. The original JDF (Job Definition Format) in CIP4 will be Try to solve this part of the problem.
6. Import of management information, control and query feedback
In addition to process information, management information is also an important part, such as customer's basic data, printing requirements, company's production costs, raw material costs, inventory, valuation system, financial system and even MIS (Management Information System). The process is combined to achieve "printing factory informationization" to realize the computer integrated manufacturing (CIM) of the entire printing process. In this way, the whole factory self-assessment, receipt, scheduling, raw material purchase, production, tracking, query, quality control, Delivery, invoicing, payment collection, the entire process is automated.
7. Introduction of Internet, wireless communication and remote control
In the past two years, the rise of the Internet and e-commerce is also concerned by the CIP4 alliance. Through the timely and unrestricted features of the Internet, you can remotely master and even control all systems. The e-commerce mechanism will also be regulated in the content of CIP4. in.
In short, the goal of CIP4 is to become a new printing industry standard, all equipment and processes must be supported, and good scalability is retained, in order to adapt to future development, it must also be integrated with existing processes and specifications to ensure existing investment benefits and Incorporate into the existing MIS management system.
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