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
40
Summary of Contents for Quick Check PC600
Page 1: ...Quick Check PC600 Bar Code Verifier User s Guide ...
Page 6: ...5 ...
