How are paper money printed?

People will always come into contact with all kinds of printed matter in daily life, among which the most common and exquisite printed matter is RMB. The task of printing RMB was completed by the 1 1 enterprise under the direct leadership of the People's Bank of China, and the place where RMB was printed was called the banknote printing factory. The printing process of RMB can be divided into the following basic steps: paper inspection, prepress treatment and plate making, trial printing, formal printing, quality inspection, cutting, quality inspection, warehousing and so on. Banknote paper used for printing RMB is watermark paper, which is a special paper used for printing money. This paper is produced by three banknote paper mills under China Banknote Printing and Minting Corporation, namely Baoding banknote paper mill in Hebei, Kunshan banknote paper mill in Jiangsu and Chengdu banknote paper mill. In addition to physical and chemical properties such as wear resistance, folding resistance, acid resistance and alkali resistance, it also has built-in security thread, colored red and blue fiber and other anti-counterfeiting means, and covers the watermark pattern for anti-counterfeiting. Before printing, the staff should check the quality of the paper one by one. Because there is a problem with the direction of the watermark, each piece of paper should be stacked in the direction of the watermark pattern, and the edge should be punched and positioned with a punching machine. Can't make any mistakes. Before printing in RMB, as in ordinary printing, printing templates should be made. Because of the use of graphic anti-counterfeiting, when making coins, we should use the corresponding design software in the computer to design various exquisite and complicated anti-counterfeiting patterns and other related words and patterns, and output them as soft films for later use. Because of the need of anti-counterfeiting, RMB should use various printing technologies. Therefore, according to the specific printing techniques and the requirements of using ink and color, we should make the corresponding contents flat, convex and concave. For example, because the renminbi uses a hand-carved intaglio pattern, a steel plate engraver must engrave the steel plate with the corresponding content according to the content of the currency surface and put it on a gravure press for printing. After the printing plate is put on the machine, try printing with a piece of yellow paper first, and then it can be officially printed with the water printing machine after the trial printing is completed. This is because watermark paper is a special kind of paper. In order to prevent counterfeiters from getting this kind of paper, the general mint controls the amount of this kind of paper very strictly. Whether it can be used to issue genuine printing paper or waste paper appearing in the printing process, it must be strictly recycled. Printed RMB is sent to the sealing workshop, and the quality inspection workers will check the quality of each RMB under the lamp: in the sealing workshop, the quality inspection of RMB is divided into two steps. The first step is to check the large sheets, that is, to check several large sheets printed in RMB from the printing machine. At this time, the quality inspection is mainly to check whether there are any quality problems, such as whether the color is accurate, whether it is damaged, and whether it is missing ... After checking the large sheets, it will go to the next process: cutting. Cutting is to cut a large piece of RMB into small pieces and turn it into RMB of the same size as we usually use; The next step is to check Xiao Zhang's RMB, such as whether the number is misprinted, whether the color is uniform, and whether the watermark is inverted. Then, the checked banknotes will be sealed and transported to the bank for social circulation. When people get brand-new money from the bank, they don't expect it to have such a complicated experience!