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Under color removal is used in process color printing. Black ink used to add details and darkness in shadowed areas is called a skeletal black . With current [ as of? ] ink technology, the total CMYK ink in the shadows refuses to stick after it reaches the dark shadows (usually above a 250% total CMYK coverage), and begins to peel off.
The CMYK color model is based on the CMY color model, which omits the black ink. Four-color printing uses black ink in addition to subtractive primaries for several reasons: [2] In traditional preparation of color separations, a red keyline on the black line art marked the outline of solid or tint color areas. In some cases a black keyline was ...
In printing and graphic arts, mixing of two dissimilar colors in two adjacent printed dots before they dry and absorb in substrate is referred to as color bleeding. [1] Unless it is done for effect, color bleeding reduces print quality. Prior art applied this term to the phenomenon of single color ink following the fibers of the paper. [2]
A method of full-color printing is six-color process printing (for example, Pantone's Hexachrome system) which adds orange and green to the traditional CMYK inks for a larger and more vibrant gamut, or color range. However, such alternate color systems still rely on color separation, halftoning and lithography to produce printed images.
Color with a chroma of 0 would be neutral gray. A general color name, such as yellowish brown or light gray, often accompanies the Munsell notation for soil samples. These qualitative descriptors correspond to one or more color chips in the Munsell soil color books; however, they are not formally part of the broader Munsell color system. [13]
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