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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 ...
Spot color classification has led to thousands of discrete colors being given unique names or numbers. There are several industry standards in the classification of spot color systems, such as: Pantone, the dominant spot color printing system in the United States and Europe. Toyo, a common spot color system in Japan.
The same approach applies if one of the colors is a spot color and the other a process color. Trapping becomes more difficult if both colors are process colors and each is to be printed as a combination of the basic printing colors cyan, magenta, yellow and black. In this case, the trapping decision depends on the amount of ‘common’ color.
HKS colour fan. The HKS is a colour system which contains 120 spot colours and 3520 tones for coated and uncoated paper. HKS is an abbreviation of three German colour manufacturers: Hostmann-Steinberg Druckfarben, Kast + Ehinger Druckfarben, and H. Schmincke & Co. The association of those three companies have defined the colours of the HKS ...
Generally, spot-color inks are formulations that are designed to print alone, rather than to blend with other inks on the paper to produce various hues and shades. The range of spot color inks, much like paint, is nearly unlimited and much more varied than the colors that can be produced by four-color-process printing. Spot-color inks range ...
In color theory, a tint is a mixture of a color with white, which increases lightness, while a shade is a mixture with black, which increases darkness. Both processes affect the resulting color mixture's relative saturation. A tone is produced either by mixing a color with gray, or by both tinting and shading. [1]
Other colors, regardless of their relative luminance, are always trapped to (spread under) these spot colors. If several of these spot colors are used (a common practice in the packaging market), the order of printing layers rather than luminance is the decisive element: the first color to be printed is spread under the next color.
[1]: 6.1 Paint color mixer is also affected by the media used as wetting, deagglomeration, and dispersing agents for the pigments. These agents all have their own transparency/opacity and color properties and can also alter the transparency and color of pigments. [citation needed] Red and yellow paints being mixed on a palette