Printing in the era of knowledge economy is one of the processing technologies of the mass media in the field of knowledge industry communication, and it is a high-tech industry. At present, after many world-wide printing titles, it can be broadly divided into four categories: offset printing, gravure printing, embossing, and screen printing. Flexo is one of the newest ones in embossing. According to statistics and predictions of Dr. Bruno and Kodak in the United States, in the world printing industry in 1990, offset printing accounted for 45%, and relief printing accounted for 19%, of which flexoprint accounted for 17%. During the period from 2000 to 2005, flexo printing will develop rapidly; while offset printing has matured, development will tend to be slow, and offset printing and flexo printing will “be evenly divided.†In order to comply with the historical development trend of printing technology across the century, Renshi Company opened the business of offset printing in Shanghai in 1996. In May 1998, DUPONTCYRE13002P flexographic platemaking equipment was introduced and put into operation, making it a noisy prepress production job. A company that combines flexo and offset printing. Flexographic and offset editions have quite a lot of features in pre-production, such as: input color separation of color images, computer graphic layout operations, etc., among them, including the requirements for the quality of originals, the level of electrical extensions or scanners. Decomposition, color balance, gray balance, color compensation for ink plate compensation, etc., as well as processing images and colors using PHOTOSHOP from Apple Computer, processing illustrations and texts with PRDDHAND and ILLUSTRATOR, processing typesetting formats and text output with QUARKXPRESS and PAGEMAKER, and so on. However, there are four main characteristics of the flexographic version of the main characteristics and offset printing plate is different: 1. The overall dot gain value of flexo printing is much larger than that of offset printing. After the output of the flexographic image, at the 50% outlet, the general product outlet needs to be compressed by 15%. When printing corrugated cardboard, the outlet needs to be compressed by 20%. 2. Dots with different shapes and different line counts cause different expansion values. My company generally uses circular dots. The number of screens is usually about 100-133 lines/inch. Calculated on the perimeter of the outlets, using a 175-line offset/inch circular dot as a benchmark, the ratio of the circumference of the 100-line/inch flexo dot to 0.326, the ratio of the 110 line/inch to 0.395, and the ratio of the 120 line/inch is 0.47. 133 lines/inch is 0.578. In other words, the perimeter of the flexo is much longer than the offset scale, and the circumference of the circular dot is shorter than the square dot, so the actual expansion of the flexo dot is far more than 15% larger than offset printing. 20%! 3, flexographic printing plastics printed in India and India, the dot expansion value is not the same, the output in addition to the film is different from the positive and negative, the curve should be different. 4. The characteristics of the flexographic printing plate and flexo printing conditions determine the characteristic curve of the high-light spot and offset printing. Offsets are used in high light to avoid netting, and as a flexible version for continuously adjusting images, our company generally gives 2-3% of protective outlets. This four-characteristic curve is ultimately determined by the final reflection of the respective characteristics of the five basic elements of the printer, printing plate, ink, anilox roller, and print carrier, and the different levels in the operation of the combination. of. This comprehensive operation reflects various data in the print quality control, that is, the main basis for the flexographic prepress production characteristic curve. Therefore, the data relationship between the values ​​of the solid ink density of each color ink obtained from the “trial printing†and the printing expansion values ​​of different screen lines and different percentages of dots on different carriers is the data in the flexographic prepress production. The basis of management. All this can be collectively referred to as the printability problem of the flexographic printing plate. There are two problems between the color and image of various types of manuscripts provided by customers (transparent drafts, color photos, drawings, prints, texts and design drafts, electronic manuscripts, etc.), and creative re-combination of flexo prints and images. : A customer's concept of product reproduction requirements; second is the production of flexographic version of the hardware equipment and raw materials and software technology ownership and data production management mechanism. Therefore, in the image-number-image conversion, there is such a formula: the color image of all kinds of manuscripts + the quality requirements of the customers on the products - the synthesis of light, electricity, color, chemistry, and machine for hardware and software in production. Use - the color image of the new combination of flexo. Reprinted from: Creative Space