Direct Part Marking Applications - Datalogic Matrix 300N Reference Manual

7

7.2.9 Direct Part Marking Applications

For Data Matrix family codes the Decoding Complexity parameter is available when
Processing Mode is set to Standard and selects the decoding algorithm according to the
printing/marking technique used to create the symbol and on the overall printing/marking
quality.
The possible selections progress from Low to Very High where Low can improve decoding
time for good print/mark quality and/or relatively normal size codes. This is the default
setting. Very High can improve the decode rate for low print/mark quality and/or small size
codes. This algorithm is much more aggressive but in general it may have longer decoding
times than the lower complexity algorithms. To minimize decoding time it is better to
select the lowest value that still guarantees good decoding.
Washed out and Axial
Distortion
Background
Problems
Half moon effects
For QR code the Decoding Method parameter allows the Dot Peen Decoding algorithm to
be selected which improves the decode rate for low quality Direct Part Mark codes and in
general for Direct Part Mark codes with dot peening type module shapes.
142
Dot Peening On
Scratched Surface
Marked On Curved
Shiny Surface
Shiny surface,
noisy background
Figure 75 – Problematic Direct Part Marking Examples
MATRIX 300N™ REFERENCE MANUAL
Low Contrast
Low contrast,
noisy background
Problem
Axial
distortion