Scientific Management before Printing (II)

After the apple or PC workstation operator receives the manuscript, he must strictly follow the layout requirements, use the software such as PhotoShop to do the special effects processing and conventional processing of all kinds of images, use Freehand and other software to process the graphic effects, and achieve standardized operations, such as : The black and black lines are black and white, and the projection of the white background is about 30% of the black screen. The projection of the pressure background is 60% of the black screen. Typographers need to carefully complete the selection of text entry and font size as required, and then complete more standard page processing. In particular, when multiple people handle a book at the same time, pay attention to the unified specification of the parameters, including the unified page number, the book Etc. Finally, the black and white (color) printer outputs a sample for customer confirmation. The operator of the imposition workstation, while accurately completing the imposition work, must carefully collate the black-like verification of the page file converted by the PS, use the last-minute modification function, check the text, size, etc., so that it is basically correct. The final film output from the photo-composing machine shall be carefully checked by the quality inspector for text, images, color blocks, imposition, etc., and the proofs shall be sent for proofing after confirmation.
Third, proofing is a bridge between computer and printing. It not only correctly reflects the original tone and color, but also provides standard color proofs for printing. The traditional analog proofing needs to be accurate and stable in the color of ink samples. It is necessary to control and regulate the printing process. To make a high-quality printing plate, we must first ensure that the light source of the printing machine is stable and uniform in illumination, and determine the best exposure time; also fix the exposure, the brand of the plate, and the conditions for developing and fixing. Secondly, with 2% fine point out, 98% hollow spots are not pasted as standard, periodically test the variation of the light source, timely adjust the exposure time, improve the stability and repeatability of the printing plate, and replace the PS plate of a brand. Timely adjustment of various parameter settings. Finally, the working status of the proofing machine should be fixed, and the solid density value and dot gain rate should be controlled to improve the repeatability and stability of proofing. The stability of the proofing provides the correct feedback and reliable basis for adjustment of the gray balance curve of the front-end scanner and the correction of the display of the apple or the PC workstation, so that the computer-making plate truly embodies WYSIWYG.
As far as digital proofing is concerned, the color proofing of the printer must be carried out through standard proofs that have been completed in the traditional analog proofing process to ensure that the printer is in its best condition. Then, the colorimetric value of the colorimeter measurement is input into the printer profile generation software; the profile generation software compares and analyzes the colorimetric data of the original sample tag and the output color tag to generate a new printer profile that conforms to the existing production process. In order to achieve the digital color proofs and the color of the simulation proofs are basically the same.
Fourth, the traditional manual plate-making job carrier is film, and the computer plate-making job carrier is the digital electronic file in the system. Therefore, the maintenance of the network system and the management of the file file are another basic content of the standardized management of the computer plate. To improve the efficiency of computer-based plate making, not only must the processing speed of the carrier content be improved in all aspects of the process flow, but also the digital management process must be introduced to properly arrange the storage location of electronic files in the system and the system data flow to avoid duplicate transmissions. A large amount of data files, and the use of optical disc recorders and other equipment, the file data archiving management, regular system backup, retention of information for customers, to facilitate the future revision and reprint, and timely vacate valuable disk space, Increase productivity.
Computer color plate making technology, technology links, involved a wide range, it is the decomposition of color, transmission of the network, but also the synthesis of color, file transfer and so on. One criterion for measuring the level of standardization of dataization is that one is reductive and the other is reproducible. Computer-based plates should be reducible and reproducible. There is no certain level of dataization. Therefore, we must proceed from the actual situation, start with the most basic work, and devise a set of standards and norms that can practically promote the application of symbols. The implementation of digitization, standardization, and standardized scientific management of computerized plates is only a means. The real purpose is to improve the quality of products, shorten the production cycle, reduce production costs, give full play to the superiority of advanced equipment, and increase production efficiency.