Acid-etching: A method similar to sandblasting, used primarily for marking glass & metal. A stencil
of the artwork is either hand- or computer-cut and applied to the glass, which is then brusshed with
an acid mixture such as ammonium and sodium bifluoride. After a specified length of time, the
surface is washed and the stencil removed.
Acrylic: Although sometimes used as a generic term to describe plastics, acrylic is a particular type
of plastic characterized by its clarity and colorability. Also known as plexi glass.
Angle iron: Describes any piece of structural iron or steel bent to a right (90-degree) angle for use in
sign cabinets and other structures.
Animated sign: A sign that shows motion or changes in copy or color, most often through the use of
electric or electronic means. See "flasher".
Application tape: See "Transfer tape"
Art Work: Any materials or images that are prepared for graphic reproduction.
Awning: A shelter constructed of non-rigid materials on a supporting framework which projects from and is supported by the exterior wall of a building. An awning may or may not be illuminated and/or
decorated with graphics to serve as a sign.
Back lighted (back lit) sign: A sign consisting of a cabinet containing a light source surrounded by
one or more translucent face(s).
Ballast: A power conversion unit used to illuminate fluorescent lamps.
Banner: A sign made of fabric, plastic or other non-rigid material, which has no enclosing
framework. May be painted, screen printed or decorated with vinyl or digitally printed.
Billboard: A large outdoor board used for posting advertising.
Bleed: In printing, refers to the portion of the job which extends beyond the area of the finished print.
Boldface: Any type that has a heavier black stroke that makes it more conspicuous.
Bounding box: The area of an on screen image at its maximum X and Y axis measurements.
Bounding boxes allow scaling of all graphic images in PostScript file types.
Bronze: An alloy of copper and zinc with traces of other metals, long associated with traditional
institutional signage. Bronze signs are cast, then lacquered, pre-oxidized or left to oxidize naturally.
Brushed finish: A non-glossy, textured surface applied to metal for decorative purpose.