Offset printing, especially in the offset printing industry, is the most sensitive and headache- printing material for the problem of chromatic aberration in printing production, because the chromatic aberration of printing can cause fatal losses to the production of the company, even losing customers. Beverage packaging
Why are offset packaging products so sensitive to printing chromatic aberrations? We all know that in all color packaging forms, offset packaging products are the most high-end printing methods, so the electronic supervision code , the customer will have higher expectations for the quality of printing, so he can not have any bad phenomenon. occur. Web publishing
Moreover, all packaging products are large-volume products. Therefore, the renminbi , the printing batch size is large, and the number of times of printing is large. However, for batch products, the printing color of the product will inevitably be required to be consistent, otherwise it will be There is a worry about true and false, so we will see that customers are very strict about the printing color of packaging products. For printing companies, publishing, printing and then to turn every single product but also how much there is a certain psychological pressure, because the viewer is not aware, it will lead to bulk scrapped, but its huge losses Yeah. the term
We all know that offset printing is also called lithographic printing "Chinese Printing Blue Book" . The reason why it is called lithography is that the printing plate is a flat plate. The pattern on the plate is neither negative like gravure printing nor watermark. A positive image like a flexo, but a pattern left after a photosensitive layer is photosensitive. All the patterns except the field are processed by the image formed by the dots. The shades of the highlights and low-light areas in the pattern are formed by the density of the dots, and the density of these dots is consistent. The design requirements, whether the color reproduction state of the printing plate is stable, and completely depend on the high accuracy and low printing material density of the pattern dot density on the printing plate. Therefore, whether the color quality of an offset printing product is problematic, 90% depends on The accuracy of dot density reduction on the printed version of the machine is high. Map printing
Offset printing version, whether it is PS version or CTP version, is the quality of the density of the dot to restore the accuracy of the color of the Lekai two gel , because the color of offset printing is the effect of superimposed by several colors To complete, therefore, the printed product is extremely dependent on the color accuracy of the highlight and low-light areas of each color, and the accuracy of each color depends on the yield of each corresponding printing plate. Therefore, only by controlling the quality of the printing plate of the machine can effectively avoid the formation and failure analysis of the printing chromatic aberration, in order to effectively reduce the production cost and increase the profit rate. Packaging safety
In a patented technology "offset printing plate dot reduction density determination method", an effective technical means is adopted, and the dot data of the film or design file is extracted by the full coverage of the printing plate, and then the restored version of the printed plate is extracted. The dot density data is extracted, and the two are comprehensively compared with high-fidelity printing . Through the comparison data, the dots on the printing plate and the film can be accurately carried out in the highlight region, and the dots in the low-light region are strictly compared. The data of the pair can be restored by the software system. The effect of the dot reduction is too large, or the contrast is low, and the font is determined for the range of the contrast is too large or low. If the contrast does not cause obvious chromatic aberration, it can be counted as If it is qualified, it can be printed on the machine. If the contrast is outside the allowable range, the printing plate must be scrapped and re-made. Print inspection
Comparison of the contrast between the highlight and low-light regions is the most effective technical method to determine whether the print dot reduction density is acceptable. First of all, the packaging design , the basis of the data comparison is the film or the design document. If the density of the dot density of the printed version of the color is too large, then the pattern of the color may have a color difference, because you want to keep up with the highlight. The color of the area is concave and convex , so the color of the low-light area will be heavier, and the color of the low-light area will be lighter, and the color of the high-light area will be shallower, and thus the color of the entire finished color will be caused. If the contrast of the dot density in the high and low light areas is small, then the color of the high light area is enough for the paste box , and the color of the low light area is shallow, and if the color of the high light area is normal, the color of the low light area is biased. At the same time, it will cause the whole color to be heavier, resulting in a clear color cast Beiren Group . It will also make the whole printing effect look gray, and it will be old and lifeless. China Printing Industry Annual Report
"Offset printing dot reproduction Determination methods" software system, not only for reducing the dot density printing plate for comparison, can also analyze the dot density deviation value Lucky 2 plastic, analyze the deviation is small or partial Large, what is the deviation value, and how to solve it. According to the deviation value, it can be analyzed whether it is caused by inaccurate printing plate or development. It is because the printing time is not enough or the time is long, and the error is how to report it . How to correct it. It is caused by a change in the hardness of the developer, or caused by fatigue of the developer, or due to insufficient development time. This series of data can be visually displayed on the interface of the computer. After seeing the unqualified alarm prompt, the operator can look at the computer to know where the problem is and how to deal with it. Digital printing in China
The technical scheme with higher automation degree can also directly control all equipments to automatically adjust the development history , such as adjusting the light intensity of the printing machine, adjusting the exposure time, and performing the printing time on the washing machine. Adjustment, timely replacement of the developer, etc. All of this is done in an automated situation, without the need for manual intervention standards and certifications , so the effect of checking the pass rate before the press on the machine is absolutely accurate. Standards and certification
Under normal circumstances, we may encounter some products, the first printing color is no problem, but in the second printing, there is a problem packaging logistics , printing is no problem when proofing, but the big goods are produced. problem. These phenomena are common problems in many offset printing and printing companies. All of this is caused by the unqualified printing version. If you can't reprint the printing plate in time, then EFI , you can't print anyway. The qualified color comes out, because all the chromatic aberration problems caused by the density error of the dot density cannot be adjusted on the printing machine. Therefore, this problem will bring great loss of production efficiency to the prepress equipment of the enterprise, and will also give The quality of the product poses an immeasurable danger. Print inspection
The technical scheme of "Dyeing printing plate dot reduction density determination method" can effectively avoid the unqualified printing of the unqualified printing plate after repeated debugging, and then it is forced to re-plate after many debugging failures. As a day's production might reduce the tens of thousands of photos, not only reduces efficiency, labor costs and production and processing costs have risen Correa, natural product margins, reduced value to follow, therefore, to ensure that the machine The pass rate of the printing plate is the most powerful means to ensure efficient production and quality. Offset printing machine
Although the method for measuring the density of offset printing offset dots is still in the technical stage, its function after forming a product is enormous. China has nearly 60,000 large and small offset printing and packaging companies screening for such technology, the demand can be imagined. The industry's product profits are getting lower and lower, how to deal with it, only reduce losses and increase profit margins. All losses are 100% profit RIP , and the loss per pen represents the loss of profits. Increasing production efficiency is the most effective way to increase production profitability, because efficiency does not increase by 10%, then profit margin can be increased by 40-50%, and efficiency can be increased by 20%. Special printing , then your profit margin can be doubled. It is. But the only way to effectively solve this problem is to help companies achieve the goals you want. Therefore, enterprises that want to print plate making equipment, offset printing companies can find opportunities in a timely manner, and apply technology to production in a timely manner. DTP
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