HandHeld Entertainment Quick Check PC600 - Manual (Page 48)

average edge: An imaginary line dissecting the irregularities of the character
edge.
background: The light area between and surrounding the bars of a printed
machine-readable symbol. The background can be the substrate on which the
symbol is printed or an over-printing of a suitable light color.
bar: Any of the dark lines in a printed machine-readable symbol.
bar code; barcode; bar-code: An array of parallel rectangular bars and spaces
arranged according to the encodation rules of a particular symbol specification in
order to represent data in machine readable form. See “linear symbol” and “two-
dimensional symbol”.
bar code character: See “symbol character.”
bar code density: See “symbol density.”
bar code master; film master: The original film or other image of a machine-
readable symbol, produced to close tolerances and intended for reproduction by
conventional printing processes (for example, for incorporation in a printed
packaging design).
bar code reader: See “reader.”
bar code symbol: The combination of symbol characters and features required
by a particular symbology, including quiet zones, start and stop characters, data
characters, check characters and other auxiliary patterns, that together form a
complete scannable entity.
bar height: The dimension of the individual bars in a bar code symbol or in a
row of a multi-row two-dimensional symbol, measured perpendicular to the
scanning direction. See “Y dimension.”
bar reflectance (Rb): The reflectance of a bar measured in a locally-selected
portion of a scan profile.
bar width: The transverse dimension of an individual bar in a bar code symbol,
measured parallel to the scanning direction. The number of possible width
variations within a particular printed symbol depends on the symbology used.
bar width gain/loss: See “print gain/loss.”
bar width ratio: In symbologies having two widths, the ratio of the widest to the
narrowest width within the bar code symbol. See "wide to narrow ratio".
bar width reduction/increase: The extent by which the width of the bars on the
machine-readable symbol master is reduced/increased in order to correct for
expected print gain/loss.
bearer bar: A bar abutting the tops and bottoms of the bars in a bar code
symbol, or a frame surrounding the entire symbol, intended to equalize the
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