Spot color printing refers to the use of other color inks yellow, magenta, cyan and black ink four-color ink other than to replicate the original color of the printing process. Packaging and printing frequently used spot color printing process printing large background. To ensure the same batch and different batches of color in line with national standards and customer requirements, in packaging printing process on spot colors such control 1. Make color cards first by color standard sample provided by the customer, using computer matching system given the proportion of spot color ink; then call up the ink sample, with the inking device, ink instrument exhibition "show" the different densities of color samples; then, in accordance with national standards (or customer) requirements for the color range is determined using a spectrophotometer Standard, shallow limit, deep limit, Dongguan tea box printing, production printing standard color cards (color excessive need further amendments). Packaging design color card half normal color sample, and the other half is the color of the surface treated sample, this is a convenient time quality control use. 2. Verify that the paper is considered a spot color is a major factor affecting the color, so each previous printing paper to be used for the actual printing "show" the color sample, box printing, color cards do micro correction control, Dongguan wine box printing in order to eliminate the impact of paper. From machine printed standard color card spot color ink film thickness control 3. Printing control printing, while supporting the main color density measured density values ??and Bk values ??to overcome the ink to dry, wet color density differences. In short, packaging, printing, resulting in a wide variety of spot colors to produce color reasons, to be specific analysis of the actual production for various reasons, to solve the problem, try to control the minimum deviation range to produce customer satisfaction packaging printing products. There are a variety of printing methods, different methods, the operation is different, printed results also vary. Traditional printing methods used can be divided into: letterpress, offset, gravure printing and stencil four categories. Toppan Printing (Relief Printing) printing surface is usually prominent, rather than image areas are recessed, called letterpress printing, letterpress printing includes letterpress and rubber version of the two. Typography (Letter press) letterpress printing type is made by early clay and wood type and lead type cast evolved, until modern times most type layout is based, and this printing method, because it is directly printed by the printing paper on, it is a direct printing of belonging. Toppan Printing plates used, in addition to the text of the use of type layout, the other as special fonts or patterns, pictures and the like, using photolithography method to form zinc plate (commonly known as electric version), and more recently to the development of nylon offset, Improved network printing results. General letterpress printed version is flat, but there are some cases, you need to copy the flat printing plate into a curved shape of the stereotype, which can be mounted on the reel rotary letterpress machine, for a large number of print, such as newspapers, etc. . In addition to printing pictures from text, typography plus some accessories, you can also print text pattern embossing the surface, can mutilation printed surface (commonly known as beer-like) and the printed paper is torn with pinhole line and printed automatically translocation and other digital word. Flexographic printing (Flexgraphy) flexographic printing and letterpress printing similar, except that the plate is a piece of soft, like a stamp with a rubber cover. And gravure inks used similar highly volatile and thin, adhesive tape and plastic bags used to print. Dongguan tea box printing box printing _ _ beyond printing by the Dongguan City, often beyond packaging products factory provided. Dongguan Chang-ping beyond packaging products plant (www.dgcyp.com) strong, credible, in Dongguan, Guangdong paper printing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead beyond printers and you hand into the brilliant, for a better future!