Cognex DataMan - Page 41

Property Type 1DStandards 2D Standards Description
printGrowth
Metric 1D Readability ISO/IEC15415
(DataMatrix, QR,
DotCode), AIM/DPM
ISO/IECTR-29158
(DataMatrix, QR)
The print growth. Print
growth is a measure
of how completely a
light or dark patch fills
the cell allocated to it.
High print growth
means that a cell
exceeds the
boundaries allocated
to it, while a low print
growth indicates that
the cells are not
taking up all the
available space.
Either of these may
cause problems
(either by making
adjacent cells difficult
to read in the case of
high growth, or
making the cell itself
difficult to read in the
case of low growth).
As a result, a print
growth close to zero is
desirable. A high or
low print growth
usually indicates
problems with the
printing process for a
code. For instance, a
dot peen marker may
be wearing out and
making smaller
marks, or a printer
may be depositing too
much ink on a label
and making the marks
too large.
UEC
Metric ISO/IEC15415
(DataMatrix, QR,
DotCode), AIM/DPM
ISO/IECTR-29158
(DataMatrix, QR),
SEMIT10
The unused error
correction. Unused
Error Correction
measures the amount
of Error Checking and
Correction data that
was printed into the
code, but was
unused. A high UEC
count is good, as it
means that little to no
Error Correction data
was needed to
successfully read your
code. A low UEC
value may be due to
poor printing, poor
imaging, an incorrect
code, or a damaged
code.
41
DataMan Application Development