Analysis and solution of printing coloring technology
1. The current status of printing and coloring problems 1. The current status of domestic printing enterprises in recent years, although the printing color level has improved, there are still some common problems in the printing process, the printing color is still high salary Master color master. Determine the level of printing color of the company with personal coloring experience, which plays a key role in the on-time delivery of printing products and the accuracy of printing color.
1.2 problems 1.21 printing more times. Can not guarantee the normal delivery of printed products. Printing and dyeing enterprises in China are divided into paint printing and dye printing. The printing production process has a long process and involves many links. It takes more time to repeat the sample. In the production, the color of the printing is not allowed, and it needs to be repaired and adjusted. Most of the printing The process needs to be repeated and ineffective, wastes a lot of precious production time, and then has other factors affecting it. It will increase the waste of time. This vicious cycle makes the delivery time of printing less and less, even if it can be delivered, there are many hidden dangers.
1.2.2 Large color printing color difference. Due to the long printing process and many links, the influence of color factors leads to poor color accuracy, and the color level or color management is not in place, which makes the coloring technician unable to correct these deviations, resulting in the existence of printing chromatic aberration or printing quality hazard.
1.2.3 Lack of high-level printing and coloring technical talents and color management talents, the printing process and printing coloring technology are out of touch, mutual restraint, can not be improved.
2. Analysis of the current status of printing and coloring 2.1 There are some instability in the printing process. The printing process has physical and chemical processes, and some processes are tangible. As long as the management is in place, the problem can be solved through analysis. But the chemical process, only see the results, only by dyeing and finishing professional and technical personnel to control, which requires some experience and theory to support. Most of the printing and coloring staff are long working hours and experienced, but the professional knowledge is not comprehensive, and it is impossible to control these unstable factors. It can only be judged by multiple trials.
2.2 Printing color management technology is very important, in the printing measurement accuracy, such as printing, steaming, baking, washing, printing and finishing operations, temperature, speed, time, printing blade pressure, blade specifications, The accuracy of the printed cloth itself, the accuracy of the formula, etc., no matter which factor is wrong, the printing color will be inaccurate. If we manage the printing coloring technology as a system, we can solve many unstable factors. Individual printing companies rely on personal experience and some wrong habits, in order to find fast printing materials by estimation. This is difficult to ensure color accuracy and technical improvement and analysis of printing problems.
2.3 The printing process is not scientifically managed, which leads to the continuous production of printing quality problems. Even if there is a problem with the quality of printing, I don’t know why. I don’t know how to solve it. Printing technicians are in an unstable state in the enterprise. There is no sense of accomplishment and serious loss. It is difficult to improve the printing technology.
3. Countermeasures to improve printing color level 3.1 Printing and dyeing enterprises have printing and dyeing. It is necessary to change the viewpoint of heavy dyeing and light printing. Pay attention to the cultivation and use of printing and coloring talents. This will stabilize the development of printing coloring technology.
3.2 Strengthen the basic management of printing color:
3.2.1 The measurement work should be implemented, especially the process of coloring and weighing, the operation accuracy is very important, otherwise it is empty talk to improve the printing color level.
3.2.2 Printing formula management standardization. Recording technical data must be in place.
3.2.3 Printing formula Firstly, the technical staff will adjust the technical data, and then we will weigh the material to prevent the data from being adjusted after the first feeding test. This will make the printing color go astray, waste a lot of manpower, material and financial resources. Increase the printing cost. 3.3 Printing coloring and printing technology is highly unified. The overall technical level of printing is greatly improved.
3.4 Strengthen the printing and coloring technology exchange. Prevent the technology from being conservative, improve the coloring technology and ensure the printing quality.
4·Printing color technology training is the key to improve the printing color level. 4.1 Printing coloring personnel basically require the human eye to be sensitive to color to PPM level, that is, it can be distinguished by a slight difference. So in the coloring Adjust the color very much. If the color sensitivity of the printing and coloring personnel is detected, the coloring person has advanced color discrimination ability. Then the color theory and operation training are strengthened, so that the color level is improved rapidly.
4.2 Color Theory Training The most basic knowledge of printing and dyeing disciplines, such as fiber, cloth, dyes, surfactants, dyeing process theory, light and color, color matching theory, etc.; color manipulation knowledge, such as basic monochrome, same color single Color conversion, coloring principle color training, etc. Proficiency in the hue, color, power, coloring performance of the dye, so as to achieve color in language, such as hue, light, medium, deep, fresh, yellowish yellow, Reddish, bluish, and energy color difference; knowledge of coloring techniques, such as direction, strength, color, discoloration, etc., necessary printing knowledge. The color matching technique should achieve the color standard and fast. Improve the printing production efficiency.
4.3 Printing color matching and playing billiards have the same point printing color is extremely complicated, but similar to playing billiards, the first purpose of playing billiards is how to make the ball reach a distance close to the target. The second rod only needs direction and If you master the strength, you may enter the hole, but it is difficult. If the second shot cannot be scored, the base will be laid for the third shot, and the third shot will be finely adjusted in place on the second shot to be successful. The printing color is given a standard color first, and the coloring person gives the first party according to the reference sample or experience. After the first party color is combined, the second party is given to the standard color target, and the second party color may pass. However, if it is not passed, a third party will be opened for the standard color. 85% to 90% of the color can reach the standard color.
4.4 printing coloring skills efficient training 4.4.1 color stereo feeling training first. To find out a number of representative printing colors, must be accurate printing formula, there are certain technical difficulties, the printing variety is complete, so that all the color staff to analyze; Secondly, let the coloring staff distinguish the relationship between red, yellow, blue and gray. For example, we use the printing formula to determine the proportion of red, yellow, blue and gray in 1000 units. Finally, let the coloring staff not watch. The recipe only looks at the color, writes the print recipe, and then analyzes the accuracy and likelihood.
The use of color stereo perception training. In a short time, the level of color will be greatly improved, but unstable.
4.4.2 Toning technical skills Strengthen the unproduced printing color sample to let the coloring staff first give the first party. After coloring, adjust the standard color to give the second party. Then give the third party against the standard color. Color requirements can be met. This kind of intensive training takes only a short time, but the color level is relatively stable, and the adjustment effect on the printing color difference is very obvious, and finally the color matching is fast and accurate.
5. Conclusion Printing color matching technology is a more complicated technical system. It is necessary to solve the corresponding technical problems and management problems from the generation of printing coloring problems to the improvement and improvement of each link. At the same time, we should also pay attention to people, dyes, Management of printing machines, printing customers, etc., to find out the corresponding rules, so that the printing coloring technology will be greatly improved, which will promote the development of printing products to high-grade, high-quality, high-efficiency delivery, and improve the economic benefits of the printing industry. The last four points to summarize are:
(1) The management and training of printing coloring technicians is the basic guarantee for gradually improving the printing coloring technology level; (2) timely analysis and summary of printing color difference and printing quality problems, which is beneficial to improve the printing color level. (3) Strengthen the technical exchange of the printing and coloring personnel, so that the printing and coloring personnel have a more comprehensive printing knowledge; (4) Make full use of the computer printing color matching management and play the subjective initiative of the coloring personnel.
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