Film: Film is a very critical thing, in fact, just like our photographic negatives are the same. However, only black and white film, when you are black and white photographs of the film is the same. The four colors to be out four uv film packaging printing, out of Films are black and white, until the time of the printing of the condemnation, which is also the color of the ink used to print what it wants. Films correspond to the following four: C, M, Y, K this film what we need to do to complete the job? Actually very simple, you can directly take a CMYK mode image (usually used in the printing bitmap image format is tif) to go directly to a film packaging printing, and you do not have to separate each color, which is the computer doing things that we can see in photoshop where a CMYK image (usually the majority of images we encounter RGB mode, can be converted to CMYK look), the channel management panel, you can see there are four channels, respectively, four colors. (Figure 5) take it wants to direct a film. The piece is imagesetter, a dedicated software, operating relatively not difficult. Fourth, the plate: film came out. Engraving is easy to understand the things you related devices operate in practice to learn it. Different sub-class printing lithographic printing, gravure printing, letterpress printing, screen printing: five, printing. Quality of how to detect a box printing, spot color printing quality testing and control in printed box packaging products, because spot color printing with a large area on the ground color, all colors, good shelf display of results; reduced due to network trapping, color dot deformation, color stable, easy to identify, and therefore extensive use of spot color printing is its basic features. At present, food packaging printing, domestic box printing business spot color measurement and control instruments is relatively backward, most still in the master workers rely on experience to deploy spot color ink stage, there is a spot color ink ratio is not precise enough, the deployment of a long time, subjective Factors Affecting big disadvantage. Therefore, the use of color system is the best solution to the problem, is the mainstream technology and the development direction of international box quality control and testing. 2, special materials print quality inspection and control in the jewelry box packaging boxes printing, special materials and application of new materials and innovation is a trend, like smoke from a paper bag developing soft pack, hard pack to the jam gold and silver foil paper jams hard pack. These complexes or high-gloss surface coating material with a metallic luster and refractive surfaces, printing on a variety of colors of exquisite designs, the people feel elegant and graceful, value-added products that can greatly enhance the space, is widely used in high-end box. 3, Dongguan box printing quality online detection and control technology with the development of digital image acquisition technology and processing technology, the use of closed-circuit control system for the entire image printed products to detect and instantly adjust the print quality on-line detection and control and optimization techniques are becoming increasingly popular. International mainstream printer manufacturers have already online image detection system as standard equipment, such as Roland PECOM, Heidelberg CPC32, BOBST Switzerland, the United States PROIMAGE, Japan's DAC and TOKIMEC. Packaging printing, printing Rong Yi, Wangniudun packaging printing provided by the Dongguan City-art printing Limited. Dongguan Wing Arts Printing Co. (www.ylys1288.com) is Dongguan, a leader in adhesive products, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Wing art printing leadership with the staff warmly welcome all inquiries negotiations to create art printing wing a better future.