(color-to-)color register (In French repérage des couleurs) register accuracy between the print formes of the individual process colors in multicolor printing. Color register control during production printing is effected either at the image edges or on control elements that are also printed (register crosses), either visually with a magnifying glass or metrologically with a video camera which triggers the adjustment of the plate cylinder in the printing press as a component of a control cycle.
color reference (In French échantillon de référence) each template that can be copied in color and is therefore compared with a current sample.
color reduction, ink weakening (In French allongement) dilution of the printing ink with the solvent it is based on or with a blended substance.
color reciping software (In French logiciel de formulation des encres) computer program which uses absorption dispersion equations to mix special colors from a range of basic colors incl. ink residues (residual ink recycling) or a system of concentrates, for example X-Rite Ink Formulation and Connex Alwin II (PV).
color printing system (In French système d’impression en couleur) all printing presses, office printers and digital copiers that print more than the color black.
color pigment (In French pigment coloré) designation for chromatic pigments for ceramic products.
color perception/sensation (In French perception chromatique) the effect developing in the brain of a physical color stimulus (light), which is perceived by the eye as a chromatic stimulus.
color ordering system (In French nuancier, système de classification des couleurs) usually perceptually equidistant color specimen plates in which the individual hues are ordered according to intuitive attributes: proceeding from the lightness axis with growing chromaticness, each plate corresponds to a chromaticity type or hue family. Examples: Munsell Book of Colors, Ostwald’s double cone.
Color Mixer (In French mixeur couleurs) 1) digital color palette and color selection tool (numerical input, intuitive slide control) in various publishing programs, including Adobe Creative Suite. 2) Tables by IWA to predict the combined printing of color shades with graduated half-tone values. 3) Color circle to demonstrate additive color mixing.
color measurement/measuring, colorimetry (In French colorimétrie) process for non-destructive materials testing to determine the spectral properties of a surface (ISO 13655:) or of a light source (DIN 5033-8) or of the color rendering characteristics of a device (ISO 12641/12642); carried out with spectrophotometers or spectrodensitometers which can calculate all colorimetric values on the basis of the spectral luminance factor. Before the beginning of measuring, the measuring device must be calibrated to an absolute white standard,…
color matching module (In French module de gestion de couleur) see CMM
color-matching booth/cabinet/unit (In French cabine de contrôle, cabine à lumière) desktop testing device offering standardized observation conditions (neutral gray interior walls, brightness 2000 lx, no influence of ambient light) for color matching; depending on the industry, but also to test metamerism effects, the following illuminants can usually be switched on: CIE A, CIE D50, CIE D65, department store light TL84, UV;
color match 1) échantillonnage visual comparison between color pairs or reference and sample. 2) adjustment step by step approximation of a sample (printed copy, monitor view) to the reference (media, proof etc.) by means of visual or technical comparison.
color management system, CMS (In French système de gestion des couleurs) technological entirety of operating system architecture, ICC profiles and ICC-conform software which, with the help of color measuring technology, can create individual device profiles and suitably link these, from input to output, with the color documents to be published. A CMS ensures color consistency in a digital workflow and in each phase should make sure that the output target is simulated exactly in terms…
color management (In French gestion des couleurs) entirety of all workflow scenarios that assure desired, exactly predictable color rendering in all imaging processes and media. As standard, color management is based on the ICC profile specification, which numerous software applications more or less conform to. Thanks to such solution providers as basICColor, who do not stick strictly to the ICC specifications, but also supply tools which compensate for the conformity deficits of important publishing programs…
color LUT color look-up table, color setting table (In French table de correspondance des couleurs) entirety of the color values created in image and graphic data exchange formats for assignment to grayscales. Examples: color LUTs in graphics programs, tables anchored in the graphics card for monitor calibration, transformation rules in ICC profiles.
color library (In French bibliothèque de couleurs) systematic collection of spot color data records in the form of a color palette (indexed colors), a color database (spectral luminance factors) or a digital color fan (spectral data, CIELAB). Pantone makes its color fans and palettes available as plug-ins. Techkon provides its spectral densitometer with HKS color fans; the user has the option of creating his own color libraries with the measuring unit and to use the…
color layer (In French couche de couleur) unlike saving in color channels (e.g. RGB in one level), some file formats (but not TIFF or JPEG) can also save each of the color channels in individual levels, which makes it possible to simulate CMYK color separations,for example.
color job (In French travail en couleur) print job requiring a color workflow.
color intensity (In French intensité) measure for the intensity of a color perception. Color intensity increases with the chromaticness of the color and decreases with its brightness; dyeing products manufactured with the same color depth are only apparently manufactured with the same concentration of equally strong color agents (cf. color strength).
