Printing color management and printing production optimization The optimization of printing production includes: equipment state optimization and production process optimization. Equipment state optimization refers to adjusting the settings of various equipment and various environmental and material factors that cooperate with the equipment in printing production, so that the equipment operates in a stable and optimal state, and the efficiency of the equipment is fully utilized. Production process optimization refers to the greatest degree of reduction and automated printing production process. From the perspective of color control, it involves pre-press and printing processes. Figure 2 shows the printing color management process after production optimization. 1. Equipment status optimization The optimization of equipment status is the coordination and unification of the printing environment, printing materials and various hardware devices, mainly including the optimization of printing machines and the optimization of pre-press equipment. The optimization objects of prepress equipment include scanners, computers, monitors, laser imagesetters, CTP and digital proofers. The optimization method is to stabilize the printing process parameters through data and standardization, as follows: 1) Standardization and standardization of printing environment The printing environment mainly refers to the temperature, humidity, and lighting conditions before printing and the printing workshop. The standardization and standardization of the printing environment should be based on national or international printing industry standards. The temperature and relative humidity of the workshop should be kept in the best condition to minimize static electricity, dust, paper wool and other contaminants on film, printing plates and equipment to a minimum, maintain the stability of the paper, and reduce the humidity as much as possible. Problems with plate fluids, printing plates, and inks. The standardization of lighting conditions requires the establishment of a standard observation environment. For example, the walls of the workshop are kept neutral gray, and D65 or D50 standard light sources and light boxes are used to ensure the stability and consistency of the observation of image originals and printed samples. 2) Standardization of printed materials The standardization of printed materials includes the standardization of material purchase, material testing and the establishment of performance data files. It is best to implement relevant quality standards (such as the ISO9002 standard system). Printing enterprises should formulate standards for material selection and purchase, inspect and test raw materials, determine the performance of materials, the matching between materials and the compatibility of materials and equipment, and establish material data files to standardize printed materials management. The main printing materials are: ink, printing plate, blanket, roller, paper and fountain solution. 3) Calibration and standardization of the display The requirements for the display in the prepress environment are relatively high, and the color rendering characteristics of the display are affected by various factors such as the lighting environment and the brightness of the display. The most ideal lighting environment of the display requires the windows to be covered with heavy dark curtains to avoid interference from external light sources and to prevent the influence of ambient light on the color perception of human eyes. In addition, the monitor itself needs to be calibrated before use. Although the monitor has passed the factory's debugging and calibration at the factory, no two monitors are the same, and the color reproduction performance of the monitor will change with time. The monitor can be calibrated with a screen calibrator. The calibration items include brightness, contrast, gamma, and phosphor type. 4) Scanner calibration and standardization Most scanners will self-calibrate when they start up, and scanners with auto-calibration will perform a self-test based on a built-in reference. Scanners without automatic calibration must be calibrated. Scanners can generally be calibrated using the IT8 color scale. 5) Standardization of film output process The standardization of film output process is to ensure the quality of film output. The optimization work should start from the printing press, and then return to the prepress system and color separation. Printing machine optimization must set standard settings for each part of the printing machine, know what problems may occur in printing, evaluate the quality and compatibility of printing materials, and finally determine the optimal working state of the printing machine and stabilize this state. Including the selection of film, the test of film performance, the control of the temperature and concentration of the developer, and the establishment of the output data file of the film. There are two main factors in the quality of the film output: the density of the film and the linearization control of the film recording dots. Film density generally requires that the minimum density value is not greater than 0.07 and the maximum density is not less than 3.5. The linearization function of the dot can be set in RIP, the purpose is to ensure that the dot can be recorded on the film correctly. 6) Standardization of traditional printing process The standardization of the traditional printing process reflects the plate-making concept with printing as the center of gravity. High-quality, high-efficiency and standardized printing plates have greatly contributed to the improvement of the entire printing production efficiency. The standardization of the printing process includes: keeping the printing workshop clean and dust-free, the humidity meets the requirements, ensuring the stable performance of the printing machine, mastering the correct exposure and development time, and making good use of various testing tools. 7) Standardization of CTP plate making CTP plate-making shortens the printing production cycle and improves printing efficiency. Compared with the traditional plate-making process, CTP has the advantages of high timeliness, good dot quality, and a large range of gradation levels that can be copied. The standardization of TP plate-making should refer to the traditional printing process parameters to establish a good digital production environment. 8) Standardization of digital proofing Digital proofing is the process of using digital manuscripts to directly output printed proofs. The main purpose is to achieve customer proofing. Therefore, printing companies generally take customer satisfaction as the standard for proofing. But such non-professional subjective evaluation will inevitably lead to many problems. For example, when the printed matter cannot achieve the color effect of the proof, there will be a conflict between the customer and the enterprise. When the printed matter matches the proof, because the enterprise does not have a standard for quantitatively measuring the proof, the quality of the next proof cannot be guaranteed. In order to solve these problems, printing companies must develop digital proofing standardization documents to standardize digital proofing. The standardization of digital proofing includes choosing a suitable digital printer and supporting paper and ink, collecting the data based on printing to realize the color gamut of the digital proofing machine simulation printing, and regular inspection and maintenance of the digital proofing system. 9) Standardization of printing presses The purpose of the printing press standardization is to find the best condition of the printing press and the printing material, and to determine the maximum ink density and dot expansion characteristics of the printing press. This process must be completed through a series of tests. The setting of each printing part of the printing machine should be carried out according to the instructions of the printing machine manufacturer, including the setting of the ink roller and the water roller, the setting of the compression amount of the printing blanket, the accuracy of the printing plate and blanket wrapping, and the printing machine output Cleaning and lubrication of the paper device, cleaning and lubrication of the paper overprinting system and delivery device, etc. On this basis, perform material and printing machine performance matching test, determine the optimal state of the printing machine, and data. 2. Production process optimization It mainly includes two aspects of optimizing ink presetting and optimizing the control of color reproduction process. (1) Optimize ink preset Ink preset refers to the determination of the ink preset value of the printing press. There are three methods for ink presetting: human experience setting, printing plate scanning setting, and direct generation of ink preset data from the pre-press link. The accuracy and efficiency of the human experience setting mainly depend on the printing production personnel. It is difficult to digitize and standardize, and it takes a long time to form the experience. Plate scanning setting refers to the scanning and analysis of the graphic information in the four-color printing plates of yellow, magenta, cyan and black through the plate scanner to obtain the preset data of the ink, and the preset data is stored through the storage device or network Passed to the printing press control center, and finally reflected on the printing press. Its accuracy and efficiency depend on the accuracy of the plate scanner, the speed of scanning and the speed of data transfer. The third method is to directly generate ink preset data from the pre-press link. The system for generating ink preset data is a digital workflow. In the digital workflow, the preset data is transferred to the printing machine as a PPF (Print Production Format) file through a memory or network. The control center is finally reflected on the printing press, as shown in Figure 3. Compared with the three methods, the third method is faster, more stable, easier to realize data and standardization, and can better optimize the printing production process. (2) Optimize the control of the color reproduction process The control of the color reproduction process is to collect and analyze the printed images in real time through some online printing quality monitoring systems, and feedback the results to the pre-press link and the printing console for timely correction. Optimizing the control of the color reproduction process is mainly to establish an effective automatic color reproduction control system, build a communication bridge between pre-press and printing, and improve the effective running time of the printing press. Food Grade Essential Oil,Cumin Oil,Garlic Oil,Black Pepper Oil Ji'An ZhongXiang Natural Plants Co.,Ltd. , https://www.zxnaturaloils.com