What's the color of the print edition?
If not a multi-color machine printed color, also easy for semi-finished product color is not easy to control the appearance of color. Generally do not use four-color printing, and the use of spot color printing. This is also a lot of printing plant monochrome, two-color printing spot color. Four colors, 8 colors, more four-color printing. 5 colors, usually printed four-color, plus a spot color, or over oil, etc..
In general, photographs taken by color photography to reflect the rich colors of nature, facial expressions, paintings of artists, or other pictures containing many different colors. For technical requirements or economic considerations, a picture must be scanned by an electronic color scanner or a color desktop system. The process is then reproduced by four-color printing.The deployment of spot color printing ink to the subtractive mixing principle of pigment color, the color brightness is low, high degree of saturation. The solid ink evenly using spot color printing. A change in color, which is sensitive to changes in color, decreases when appropriate ink is applied and the thickness of the ink layer is thicker. It is easier to get ink evenly, thick printing effect.A four colour block. As a result of the composition of the color of the color, mostly by a certain proportion of dot composition. When printing dots, the thickness of the ink layer must be strictly controlled. It is easy to produce large chromatic aberration due to the change of the thickness of ink layer.
Spot color printing refers to the printing process that uses yellow, magenta, cyan and black ink and other colors to copy the original color. Color printing is often used in packaging printing to print large areas of colorThe cover of a packaging product or book is often composed of different colors of uniform color blocks or regular gradients, colors, exhibitions and texts. These color blocks and text can be separated after the use of four colors of primary colors ink collision. Can also deploy spot color ink printing, and then in the same color place, only print a spot color ink. To improve printing quality and save the number of cases in the set under consideration, sometimes to choose the spot color ink printing.
Also refers to the use of black, medium blue, brown, green four kinds of ink to achieve map reproduction of the lithographic printing method, it is China's large-scale topographic map is often used in printing methods, and has a unified color code. Each element is defined as: color features, cartouche and note with black; waterside line, single river and its note in blue, water filling section with 100 lines per inch 15% in the blue dot; contour and special landscape symbols and notes, the highway internal coloration with brown coloration in the forest; 100 line / inch green line or dot.
In the subtractive primaries color (yellow, magenta, cyan and black printing). If you use yellow, magenta, cyan, black ink, four colored ink other than the color ink to copy the original color printing process, should not be called "four color printing", but should be called "spot color printing" or "point color printing."".With red, yellow, blue and black pigment (or dye ink) by lithographic printing method of full color copy of the subtractive color mixing principle.
