Datasheet

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USER'S GUIDE
code applications. The IRISPen is a productivity tool for the office environ-
ment, not a scanner for industrial applications! It would therefore be unrealistic
to expect the same flexibility from the IRISPen one takes for granted for a bar
code wand or laser scanner.
The IRISPen supports bearer bars. “Bearer bars” are lines drawn around a
bar code which have two functions: they enhance the printing quality of bar codes
by guaranteeing that the bar code (label) printer exerts equal pressure on the
entire surface of the bar code.
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They also enforce some scanning discipline: when the scanning is too skewed,
you cross a bearer bar as you enter or exit the bar code and thus provoke an
invalid result.
The height and width of the bar codes also play a role. For a bar code to be
legible by the IRISPen, the following conditions should be met: the bar code
should be at least 0.3" (0.75 cm.) high and the narrow bar should be at least 12
mils (0.012" or 0.3 mm.). When tinier bar codes are used, the resolution of the
pen scanner does not suffice.
5chapter4.p65 2/16/2001, 3:26 PM13