Datalogic Scanning Matrix 400 - Manual (Page 128)

MATRIX 400™ REFERENCE MANUAL
118
8
8.4.7 Direct Part Marking Applications
Decoding Method: Direct Marking
For DataMatrix and QR code the Decoding Method parameter selects the decoding
algorithm according to the printing/marking technique used to create the symbol and on the
overall printing/marking quality. The Direct Marking selection 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.
Washed out and Axial
Distortion
Dot Peening On
Scratched Surface
Low Contrast
Problem
Background
Problems
Marked On Curved
Shiny Surface
Axial
distortion
Half moon effects
Shiny surface,
noisy background
Low contrast,
noisy background
All the previous examples are successfully read selecting the Direct Marking Decoding
Method.