Printing process tension zone tension control division 1. Depending on the parts gravure tension control mode can be divided into three tension zone: unwinding tension zone, printing and cutting the tension zone tension zone. Unwinding tension control tension zone includes a tension roller feed paper web between the mandrel to guide the group; printing tension zone includes a guide group feed tension roller to the printing paper set out the tension control force between the rollers; from printing set out to cut the paper roll slitter tension zone between the tension rollers. For no slitting group, just rewinding gravure group, which cut the tension zone ranging from a paper roll into the area between the complex forces reel. Control Principle unwinding tension zone tension zone 2. Printing education, it can be seen from its range of packaging machinery Dasan color card printing, mainly by the open-book machine completed. Tension control is a major function of unwinding machine works so consistent principle of the tension zone control and unwinding machines, closed-loop control system consists of the clutch, tension roller and tension controller component. Printing tension zone, is an important part gravure printing machine tension control system is to ensure the accuracy of print registration key. The tension zone tension control principle is to use the principle of differential layoffs, the system by controlling the feed tension control principle is the principle of differential system by controlling the tension roller and the paper feed roller force operating speed to adjust into the printing group and Send paper speed printing group, by controlling the amount of paper out of the printing group, to adjust the tension in the sheet. Currently commercial web in China, most of the gravure printing machines are running feed tension roll and the printing speed synchronization, the paper tension roller shaft is connected to a stepping motor, in order to achieve differential control. Cutting tension zone, the importance of its tension control tension zone with print as important, if the tension is unstable and can not reach the cutting precision media also do not produce qualified products. Hengli printing color for this card, the tension zone tension control principle generally print area using the same way that the differential control, the basic rate of printing group out of the running speed of the paper roll force, cutting force the group out of paper rolls stepper motor shaft is connected to the crop to achieve differential control. Certified different copy prints determine the different times (assuming the standard exposure time is lOOs) copy in their daily work, the more common of the original group of sulfuric acid paper and polyester film base; if in accordance Photo The Category can be divided into text line version, field color version, cable version, while cable version also have different types, such as flat screen, gradient version, layered version; some printed version will be the same on a plate while mixing several graphic, relatively speaking, the exposure time will be more complicated to master. First, the computer typesetting directly out of sulfuric acid paper, polyester film base line text version of the collage into a large version. Exposure time is 120S. The amount of exposure both to ensure the integrity of the text lines, but also developing a thorough, but the edge of the film base, and traces of adhesive tape will still remain in the printed version, must seriously except dirty. Some of the original text lines not black enough, especially Typeface relatively small cross stroke. Copy will be short-term lack of more time painting; and the pattern not black enough, long proofing time, PS version after development, dull, printing ink when the relatively poor performance, affecting the quality of printing. Second, by the camera or copied out of the line of text version of the collage into a large version. Exposure time is approximately 250S. Because these original graphic density can reach 4.0, very dark. Exposure time increases, no significant effect on the lines of text, but it can be the original film edges, traces of adhesive tape to obtain a sufficient exposure Dongguan color card printing quotes, after developing the plate is clean, the basic need in addition to dirty, you can improve copy Ergonomics. Third, the color level network printing down time of about 120s. Such printing down time can not be too much, especially to prevent the 3% of small dots disappear due to copy too much time. Fourth, the color gradation edition prints with flat screen, the 10% flat screen, copy more time, there will be bad network; more than 30% of the flat screen, version a little more time will not appear rotten Network . Hengli color card printing | beyond printing (certified) | color cards printed by the Dongguan City, often beyond packaging products factory provided. Dongguan Chang-ping beyond packaging products plant (www.dgcyp.com) Dongguan, Guangdong, printing paper leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In all walks of life beyond the printing leadership with the staff warmly welcomed the inquiry negotiations to create a better future beyond printing.