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In order to meet the requirements of this group of customers, in a few eyes, we have gradually perfected the production of large-format printed materials, printing production and post-production (laminating, laminating, die-cutting, etc.) equipment and process technology, in terms of printing quality. It has been greatly improved to adapt to the needs of the market and has produced a large variety of large-format color prints for customers.
At present, the largest four-color offset printing press in China is 160CM×109CM. My company has three large-format presses, the largest fabric 159CM × 108CM, can print 157 × 250g / square meter of paper (thickness of 13-32 wire). The production of large-format prints emphasizes the selection of manuscripts, the conversion of electricity, the conversion of nets, the resolution, the number of screen lines, the requirements for printing papers, and the cooperation of post-processes. Printed manuscripts generally use positive prints, with an accuracy of 600 DPI or more for electricity production, and a small sample for proofing after electricity separation, which serves as a basis for customers to review samples and instructs print recovery. Sometimes the customer asks for a large sample, we divide the entire layout into several small layouts for proofing, and then stitch the proofs into the required complete layout for the customer to observe the actual effect (of course, this will increase the cost) .
According to our long-experienced experience, 160CM×109CM format printing is suitable for 80-100 lines/inch screens, because this screening range is favorable for network deployment. If 120-150 lines/inch is used, 5% of the dots are easily lost, and the entire screen tends to be stiff, especially when the human skin color is expressed, which affects the copying effect. The difference between the large-scale printed matter and the album is that the viewing distance is relatively long. Generally, the viewing distance is 1-2 meters. The 80-line/inch screen number can basically represent the richness of the original image.
Large-scale film and PS version, our company has been using imported helium for many years, so that our company's product quality has a reliable guarantee. Our company's requirements for paper are more stringent. Because the paper format is large, we use imported paper from South Korea, Austria, Finland and other countries. The specification is 109CM×160CM. In the production process, in order to keep the temperature and humidity of the workshop constant, a large central air conditioner is installed in the workshop to reduce the variation of the paper sheet and guarantee the accuracy of overprinting. Especially when printing large maps, it is necessary to overcome the impact of high humidity in Guangdong on the paper size and printing quality. It is indeed a struggle, and the operators are like the “baby in the Hou Houyuâ€.
With full width of the following format, we can directly output 80-175 lines/inch screening film (without screen release) from the extension, according to customer requirements. For example, last year we printed and printed the map of the Arctic Survey made by Wuhan University of Surveying and Mapping. It is this process that uses 150 lines/inches directly out of the film, and uses Roland to color coated 170g/m2 coated paper in a 110cm×160CM format. On the print, the rubber liner is lined with a neutral liner. Since the map screen has four colors besides C, M, Y, and K, there are spot colors. It can be completed with two-color printing with four-color confidential printing. At that time, it was raining and raining, and the humidity in the workshop increased. Printing registration was difficult. However, after many adjustments, we have ensured accurate overprinting. After receiving the beautiful product, the customer was very satisfied, and promoted our peers, making many map publishers come here. On another occasion, we printed a large-size box (export packaging). The color box was 1.8 meters long and 1 meter wide. When the customer prints the print in other printing plants, the color is spliced ​​with four specific gravity papers, which affects the appearance and greatly reduces the strength of the carton. The customer asked us to think of ways to both make it beautifully printed and to increase the strength of the carton. So we took advantage of the equipment, with a 160CM long paper jam, in the obvious place, splicing 20CM long strips and 80CM long full of corrugated cardboard facing, after die-cutting, the finished product is difficult to see there is stitching, a complete Two customer requirements have been met.
In short, in today's fierce competition in the printing industry, printing companies need to strengthen their learning, work hard to tap potential, and further improve the level of technology and technology to meet the higher needs of the community.
Print large prints
As the 21st century is approaching, color printing technology is changing with each passing day. Many well-known domestic and foreign companies and customers from all walks of life have chosen large-scale posters and colorful fertilizer carton industry to promote their own products, many large cities and professional map presses for large maps, wall charts. The demand is also increasing.