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Glossary is usually defined as an alphabetical list of technical terms in some specialized field of knowledge. This knowledge base glossary provides a collection of knowledge base documents that define many technical terms. These terms are arranged alphabetically, but you can quickly jump to a specific term by selecting its first letter from the index of the knowledge base glossary below.
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The specific range of colors that may be reproduced by a device. For monitors, this is the range of colors that can be reproduced on a screen. For a printer, this is the range of colors that can be reproduced using particular ink-set on a particular paper.
The method of replacing a color that is outside the gamut of a device with the most appropriate alternative color that is within the gamut of that device for reproduction purposes.
Refers to the smooth, mirror-like reflection coming from a sample. It is also referred to as specular. This feature can be measured and evaluated. Gloss values are specific to the type of gloss meter used for the evaluation. The pigment formulation program has the ability to consider data from 3 gloss meters: 20°, 60° and 85°. To the right of the gloss range field is a second field that contains the gloss meter selections. Please be sure you that your gloss values are from the same gloss meter selected.
Colorant sets are created to simulate a specific production process. Although you may use the same colors in two different products, separate colorant sets are created for each product because the processing is significantly different. The ‘handling’ information entered into a colorant record provides specific information about the process you are trying to simulate with the physical samples you have prepared.
Intermediate, semi-aqueous form of a colorant that contains dry colorant, resin and solvents. Another term for ‘heavy’ is ‘concentrate.
Mathematical description of the relative spectral power distribution of a real or imaginary light source. This is the amount of relative energy emitted by a source at each wavelength in its emission spectrum, as compared to an equal energy source.
Illuminant / Observer
Mathematical description that integrates the relative spectral power distribution of a real or imaginary light source with the standard observer functions for either the 2° or 10° condition.
Index of refraction
The index of refraction is the speed at which light travels through a medium. Air is one medium and its index of refraction is 1.0. The colored sample you measure is made of some material, and it has an index of refraction different from air. Because of index of refraction differences, when the light travels through air and encounters the sample, some the light is reflected at the sample surface and never penetrates the sample.
A material used to create a colored sample. In pigment matching software, all raw materials including colorants are considered to be ingredients, and are assigned an ingredient type. The program can break ingredients down into parent ingredients and component ingredients or sub-ingredients.
Ingredients may contain any number of components that may, themselves, have components. "Form" describes a level of expansion of a colorant into component ingredients. Three "special" forms are given user-definable labels: • Unexpanded-Typical labels include Base, Ready-To-Use, Light. • Expanded One Level-Typical labels include Heavy, Paste, Neat, Concentrate. • Completely expanded into components- Typical labels include Dry, and Powder. The default choices for the colorant form are defined in the Colorant Set. The customized labels for ingredient form are defined in System Administration.
(also formula mode). Mode refers to how you measure the ingredients that go into the formula. For example, if you weigh the amounts of each ingredient, the ingredient mode is weight. If you assemble formulas based on volume, or specific gravity (e.g., gallon, liter, cc, etc.) the ingredient mode is volume.
A number representing preferred display order. It is assigned through Ingredient Maintenance. You can decide to display ingredients by Rank, Name or by the ingredient amount. If you want the ingredients presented in a particular order other than name, you must assign a rank.
An ingredient type, or category, is assigned to every material in your pigment matching system. In a formula, each material has a specific function, and the function determines its ingredient type. A formula can contain the following basic ingredient types: • Colorant • Clear • Thinner • Auxiliaries • Bases Assigning ingredient types to materials allows you to work with ingredients as a group. This may be useful for scaling formulas, and setting constraints on a formula, such as colorant loading.
Daily procedure used to standardize the performance of the instrument. It is done to account for changes in the environment (humidity, heat, dust, etc.) that can change the performance of the instrument.
A comparison of measurements made of the same sample, using the same instrument. The variation in measurements is expressed in terms of DE. Manufacturers of spectrophotometers for commercial use include a value for repeatability in the instrument specification. This value is only valid for comparisons of measurements of an achromatic sample (typically a white). The sample being used must have a uniform surface free of defects, and cannot exhibit any characteristics of geometric metamerism.
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