Sign & Digital Graphics

2012 Buyers Guide

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Page 75 of 103

Colorimeter—An optical device that measures absorbance of light by fi ltering refl ected light into regions of red, green and blue. While dedicated colorimeters do exist, most instruments are actually spectrophotometers that compute colorimetric values based on spectral refl ectance or transmittance curves. Color Management—Refers to coordination of color with output and display. In output, color management is often handled on a device-by- device basis by imaging production software. See also RIP. Color Modes—Models of tones based upon different values, such as: hue, saturation and luminance (HSL); hue, saturation and brightness (HSB); hue, saturation and value (HSV); red, green, and blue (RGB); and cyan, magenta, yellow and black (CMYK). Color Separation—Color separations consist of artwork that has been split into component plates of cyan, magenta, yellow and black in preparation for process printing (CMYK), or into the required number of plates for spot color printing. Each separation prints a single process or spot color. Digital fi les can be composite separations (all information in one fi le) or pre-separated (each color on its own page). Color Space—The set or model of how a device organizes color, assigning some formula—such as numeric values—as a way of replicating color. Examples of color spaces are RGB, CMY (without K, or black), and HSV. Color Specifi cation—Color values used to numerically specify a color within a color system. Color Wheel—Arrangement of the visible spectrum of electromagnetic radiation (color) in a circular fashion so that the primary colors (red, yellow, blue) are located 180 degrees from the secondary colors that complement them (green, violet, orange, respectively). Colorant—Colored material, such as including pigments, dyes or toners, that are mixed with a carrier to create inks. Conduit—A metal or PVC plastic tube for protecting electric cables. Confi rmed Broadcasting—In digital signage, a type of broadcast content in which there is a back channel through which media players can respond to transmissions with confi rmation or error messages. Content—In electronic digital signage, content consists of any fi les that are played back on video screens, including graphics fi les, sound fi les, video fi les, data feeds and script fi les. Content Management—In electronic digital signage, the act of controlling the fl ow and updating of the content of networked signage. Continuous Inkjet—Process where ink is pumped through inkjet printing nozzles at a steady pace. Droplets are either shot onto a substrate/material, or electrically charged and defl ected away from the printable surface and into a collection system. Continuous Tone—Method of printing where color dots of equal size are placed in a variable-spaced pattern, creating the effect of a more-natural color look to an image; a direct result of stochastic screening. Contour Cut—With vinyl cutters and print-and-cut digital printing devices, the ability to cut around the outlines of an image, both on the outer border and along any internal closed-loop borders. Crosslink—In UV-curing, a term describing the chemical process by which the liquid ink is converted to a less-fl uid, fi rmer, solid after exposure to a source of ultra-violate light. Contrast—In graphic design, the use of dissimilar or opposing elements, such as light and dark areas. Also, a term describing the difference between elements within an image in terms of their relative lightness and dark. Control Frame—In electronic digital signage, the frame of the network manager window, from which you choose which network manager screen to work in. Control Point—A connection between two line/ arc segments or a selectable handle on a bounding box. Moving a control point changes the shape of an object, altering a line path, shape or size. Control Console—In electronic signage, the device that receives information entered on a keyboard by the operator and transfers that information to the sign's message controller. Coordinate—A point that can be referenced by its position on the X, Y, or Z axes. The use of line or arc segments to connect coordinates creates paths for knives or bits to follow when cutting or routing an image. Corona Treatment—Process that alters static charge of sheeting, especially corrugated plastic, for greater adherence of media such as ink for decoration. Corrugated Board—A board created by gluing a corrugated piece to a fl at face, or between two fl at faces. Counter—In a given typeface, any completely or partially enclosed area of a letter. Cove Lighting—A type of indirect decorative illumination created by placing a lighting source inside a trough or cove to produce a halo effect. Coverage—The area (usually given in square feet) that a given material will coat-out. Crawltext—In electronic digital signage, the segment of text that moves through a text crawl element box. Craze—Thin cracks or breaks in paint, plastic or vinyl, caused mainly by weathering, though it may also be caused by the incompatibility of paint layers or solvents. Cross Bar—A horizontal arm that is attached to a sign. The cross bar typically runs perpendicular to the sign's face and parallel to the building's facade. It is used with guy wires to help stabilize building- mounted signs. Crossover—The connection between two portions of a neon tube, intended to be unnoticed in the fi nished sign. Typically, crossovers are coated with blockout paint. Curing—The process of effecting a chemical change in some inks or paints by the application of heat or ultraviolet light. Mid-J SIGN & DIGITAL GRAPHICS GLOSSARY

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