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Search Knowledge Base 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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24 Glossary Terms Found Displaying record 1 to 15 out of 24 search results
Sample
In Datacolor software, it is the measured color stored with its spectral values. A colored object that may be measured, evaluated, matched, or corrected. When you are working on a job, a sample may be a target (standard), or trial (batch). The spectral and or colorimetric description of a sample can be stored in a folder, at any time, for future use.

Sample repeatability
A comparison of differences in samples made using the same raw materials, equipment and processing technique. Repeatability can be expressed through a DE value. The more repeatable your sample preparation techniques are, the more accurate your formulas will be.

Sample reproducibility
A comparison of the differences between samples due to changes in the sample preparation procedure. Differences can be caused by changing one or more of the following: • Technical • Type of equipment used • Mixing Method • Curing Method • Method of Application • Batch size The degree of reproducibility can be expressed through DE. The more reproducible your process is, the more accurate your formulas will be.

Saturation
The attribute of color perception that expresses the degree of departure from a gray of the same lightness. All neutrals (white/black/gray) have zero saturation. The term saturation is often associated with the intensity or brightness of a sample. When working with the 1976 CIEL*a*b* or CMC color difference equations, the dimension of chroma(C* and DC*) approximately relates to the saturation of the sample.

Saunderson Correction
Equation for calculating a correction for the Fresnel reflectances at the surface of a dielectric material for both the incident light and the exiting light.

Scattering
Diffusion or redirection of radiant energy when light encounters particles having different refractive indices. Scattering occurs at boundaries between different mediums regardless of whether they are external to the sample (i.e., air/resin interface) or internal to the sample (i.e., resin/pigment particle interface).

Scattering coefficient (S)
The optical property that describes the scattering of light by a colorant or mixture of colorants. An optical constant that quantifies the ability of a colorant to scatter light. Based on reflectance data for a sample, it is one of the values calculated during colorant set calibration, using the Kubelka-Munk equation. It is part of the data used to calculate color matches and corrections.

Scattering resin
A resin that is not completely transparent. The resin can contain particles that absorb light, scatter light, or both. The result is that the background is obscured. This causes the material to appear cloudy, or translucent.

Single constant / one constant
A resin that is not completely transparent. The resin can contain particles that absorb light, scatter light, or both. The result is that the background is obscured. This causes the material to appear cloudy, or translucent.

SmartMatch point
Information about a specific laboratory or production dyeing stored in the database. This information is used to improve first-time matching and correction.

SmartMatch population
A group of SmartMatch points which were all dyed on the same substrate using the same dyes.

Smoothed data
The reflectance data is manipulated in such a way that minor variations in the build-up of a dyestuff are eliminated by a least mean squared fit.

Solvent
Another term for thinner. It is a component ingredient, usually a solvent or diluent, added to a formula for viscosity adjustment.

Specular
The smooth, mirror-like reflection coming from a sample. When the light travels through air and encounters the sample, some of the light is reflected at the sample surface and never penetrates the sample. We refer to this portion of the reflected light as the specular component. For the calculation of optical constants, matching and correction predictions, all spectral measurements must be corrected to account for the loss of energy due to this specular effect.

Specular Component Excluded-SCE
A type of measurement geometry. Measurement of reflectance made in such a way that the regular surface reflection is not part of the measurement. This can be accomplished through the following techniques: • Using 0°(perpendicular) incident light on the samples, thereby reflecting the specular component of the reflectance back into the instrument. • Using black absorbers or light traps at the specular angle when the incident angle is not perpendicular. • Measuring at an angle different from the specular angle in directional measurements. • For a sphere instrument, opening a hole in the sphere opposite the measuring optics.

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