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|Knowledge Base - Glossary of Terms|
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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|178 Glossary Terms Found||Displaying record 31 to 45 out of 178 search results|
Colorant set maintenance
A program feature that provides the ability to create, edits, or deletes data for an entire colorant set.
Colorant set type
Refers to the method of sample preparation, sample presentation, and optical model used to calculate the optical constants in a colorant set. Four different colorant set types are offered in pigment formulation software: • Transparent • Transmission • Translucent • Opaque
A set of numbers, usually 3, that locates a sample in a color space. The coordinates are specific to a particular color space. The most commonly used coordinates include XYZ, CIE L*a*b*, and Hunter Lab. • X,Y,Z coordinates are used to plot samples in the CIE chromaticity diagram • L*a*b* coordinates are used to plot samples in CIEL*a*b* color space. • Hunter Lab coordinates are used to plot samples in Hunter Lab space. Colorimetric data is directly linked to one Illuminant/Observer condition. If you do not carefully identify the Illuminant/Observer selection to use, the evaluations you make using this data may be incorrect. In addition, if you input colorimetric to describe a sample, you can only perform color evaluations. You will not be able to perform matching or correction activities. Also referred to as "color space coordinates."
A combined process is used to describe the entire dyeing process either for laboratory or production. A treatment is generated for each calibration dye process type (e.g.,Exhaust,Continuous) linked to the combined process.
Colorless entity used to make primary samples and adding no value to the color itself. Components are ingredients that make up the clear material: extenders, solvents, vehicles, resins, additives.
An intermediate form of a color used in plastics applications. Typically a concentrate will contain all of the major components of the formula; resin, colorant, and solvent, but not in the proportions required of the finished product.
In plastics applications, when concentrates are added to a batch of virgin resin to achieve the correct color, additional resin must be added to the batch to make it a finished product. The program uses a factor to adjust, or scale, the proportion of color concentrate and resin to create the finished product. Concentrates are used in different proportions for different products, and the factor for a specific concentrate can change from one product to the next.
The white colorant used for tinting and/or top-off. The Concentrated White may also be used as the CALIBRATING WHITE in the preparation of some types of colorant sets.
For some products, the batch size by itself doesn’t tell you how much material you need to complete a production run. For example, when you print a pattern on a wall covering, you need enough ink to print an entire roll. In this example, consumption refers to the amount of ink used or ‘consumed’ to print a roll of wall covering.
Contrast DE is the color difference between the sample measured over a pair of contrasting backgrounds. Typically the backgrounds are ‘light’ and ‘dark’ but there are other types of contrasting background used in industrial applications, such as red and gray primers used in automotive applications and black and white contrast cards.
A calculation used to determine if a sample is translucent or opaque. The sample is measured over a light and dark background and the two measurements are compared. When the sample has a contrast ratio greater than 99.9%, it is completely opaque. A number less than 99.9 indicates that some light is passing through the sample. The contrast ratio of a sample is directly affected by its film thickness. If the material is not applied at the proper film thickness, the contrast ratio and the color tolerance may not be achieved.
Textile formulation software supports three types of correction: • Laboratory correction: The existing recipe is altered and saved again. Every additional laboratory correction reduces the differences to the color sample. • Production correction: An additional recipe is calculated that is used to change the color of the dyed batch to the correct color. • Fast correction: Used for a production correction without an existing rec- ipe. It is based on a theoretical calculated recipe of the standard.
A method for evaluating the differences between two spectral curves. It is a comparison, point by point, of the reflectance or transmittance values for each curve. When the curves are an exact fit, the match is referred to as an invariant match, and it is not metameric. Curve fit is used as a technique for evaluating the differences between a measured target, and formula prediction. A spectral curve is synthesized from the formula prediction, and compared to the measured curve of a target. Curve fit is also used as a technique for evaluating the performance of colorant data used in correction predictions. The curves of the measured trial sample and the synthesized correction prediction are compared, and the differences are used to adjust the correction prediction.
D65 / D6500
A standard daylight illuminant. It refers to the spectral power distribution curve of a daylight illuminant having a correlated color temperature of 6500K.
Da, Delta A
Difference in red-green component. In certain transformed color spaces, generally used as the Da, or difference between a sample and a standard reference color along the redness-greenness axis. It is always calculated for a specific Illuminant/Observer condition. If "a" or Da is plus, the sample has more redness than greenness than the standard. If "a" or Da is minus, there is more greenness than redness. It is normally used with b to express the chromaticity or chromaticity differences between samples. Da* is the redness-greenness differences calculated using the 1976 CIEL*a*b* color difference calculation. Da is the redness-greenness differences calculated using the Hunter Lab color difference calculation. • +Da. More red (less green) • -Da. More green (less red)
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