Sign & Digital Graphics

2013 Buyer's Guide

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Terms of the Trade Inkjet Ink—The mixture of colored pigments or dyes in a suitable liquid used for digital printing. Typically either water-based, solvent-based, or UV-curable, inkjet inks dry or are cured to form a solid colored surface. Inkjet Printer—Device that drops liquid ink onto a substrate for printing. The thermal bubble-type of inkjet heats ink to approximately 400 degrees F inside a small chamber before shooting it through a series of nozzles. A piezo-based inkjet puts ink in a small chamber and then sends a charge to contract piezoelectric crystal lining the chamber and send the ink through the nozzles. Ink-Receptive—Describes a substrate that can be made wet by ink when printed and that will bond with the ink after drying or curing. Installed Content Folder—In electronic digital signage, it is a folder on the media player for content files that has been placed on the machine by some method other than being sent by the network manager, or downloaded by a separate application, for example. See also Content Folder. Intensity—The density or opaqueness of a color. Also, the amount of light put out by a lamp. Interactive Kiosks—Usually free-standing information displays that allow users to retrieve information through touch-screens, buttons, and video displays. Interactive kiosks are frequently controlled by computers running software written with multimedia authoring software. Internet Service Provider (ISP)—A company that provides Web hosting, FTP hosting, e-mail and other internet services. Interrupt Scheduling—In electronic digital signage, a type of scheduling for pages that causes a scheduled page to play at a precise time, interrupting any other script activity currently occurring. Invariant Color—A color that isn't altered by changes in illumination. IP Address—an address in four-part numerical format that uniquely identifies a computer accessible over a TCP/IP-based LAN or the Internet. For example, IP Multicast—(Internet Protocol Multicast) IP Multicast is a networking transmission protocol allowing multiple computers to simultaneously receive the same transmission. This is faster than sending an information packet to each individual computer, and is an efficient way to update many remote locations simultaneously. Each media player site is "tuned in" for the packets being sent by the broadcast server. IP Multicast is not limited to the Internet and terrestrial connections, but can also be broadcast over a satellite to be received by inexpensive VSAT dishes—often already part of a company's infrastructure for their WAN. J Jaggies—Refers to the stair-step appearance of the edges of digital images; created when the image resolution is too low. Interlace—In electronic digital signage , a process used to refresh video displays and some computer displays that alternately scans every other horizontal scan line in the display. Interlaced displays often flicker, especially when showing static images containing narrow horizontal lines. Job—A command or series of to perform maintenance tasks on one or more media players. Jobs typically involve uploading and downloading scripts, log files, and media files. Internally Illuminated—A sign which is lighted through the use of internal electric fixtures or lamp-banks. See also Backlit Sign and Exterior Illumination. Job File—A relatively small file that is created by network manager and placed in the job folder of each media player targeted by that job. The job file instructs the player on job tasks it should execute, such as downloading an updated script, deleting a file, instantly. Interpolation—Any mathematical averaging technique used to increase the size of an image file by creating more pixels, used to increase tonal value and apparent resolution. Interpolation—Process for increasing resolution  of an image by creating new pixels via an averaging of the size and colors of surrounding pixels. The result is more dots-per-inch (dpi) in resolution, although some sharpness may be lost. JPEG/JPG (Joint Photographic Experts Group)— A type of compressed computer file usually used when sending photographic images through the Internet. K Kerning—The process of moving pairs of letters farther apart or closer together to make them appear more evenly spaced. Kiosk—A small structure used for posting temporary signs and notices. Knife Bevel—Angle of the vertical cutting edge of a  plotter blade. Bevels can be between 30 degrees for general vinyl, and 60 degrees for sandblast mask. L L*a*b*—Color space calculated with values of lightness (L) and attributes of red-green (a) and yellow-blue (b). Most commonly associated with CIE for a non-device-dependent coordination of color. The two-dimensional reference defines colors and color spaces based upon physiological measurements of human color vision. Lacquer—A quick-drying clear finishing material similar to varnish. May also be used as a binder. Laminate—A process by which different materials are layered and then bonded together using adhesion. The end result may be the creation of a  substrate—such as medium-density overlay (MDO)—or the protection of the underlying surface, as when a clear, plastic film is laminated to a decorated surface. LAN—(local area network) A network of computers sharing a single server or servers in a single location, typically in an office or building. See also WAN. Laser—An intense light beam with a very narrow band width, used in engraving and other cutting equipment. Laser Engraver—Device using a directed, amplified beam of light to cut and mark material. Laser engravers generally use one of two technologies; carbon-dioxide CO2 gas-based or Yttrium Aluminum Garnet (YAG) type lasers. Both will work with a variety of engravables, including glass, acrylic, phenolic and coated metals. YAG lasers can also perform deeper engraving and cutting of metals. The power of a laser engraver is measured in watts. Layout—The total arrangement of a sign's graphic and copy elements. Latex Inks—A type of water-borne inkjet ink developed by Hewlett-Packard designed for outdoor wide-format printing applications. The inks contain about 70 percent water, 30 percent co-solvents, pigments and latex polymer particles that form a film and bind with substrates with the application of heat. LCD (Liquid Crystal Display)—Thin flat screen video displays commonly used for TV, computer 110 • Mid-June 2013 • S I G N SBGuide.indd 110 & D I G I TA L G R A P H I C S 5/31/13 12:36 PM

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