Information technology — Automatic identification and data capture techniques — Direct Part Mark (DPM) Quality Guideline (ISO/IEC 29158:2020)
This document is an engineering document intended for verifier manufacturers and applicationspecification developers.This document describes modifications to the symbol quality methodology defined in ISO/ IEC 15415and a symbology specification. It defines alternative illumination conditions, some new terms andparameters, modifications to the measurement and subsequent grading of certain parameters and thereporting of the grading results.This document was developed to assess the symbol quality of direct marked parts, where the mark isapplied directly to the surface of the item and the reading device is a two-dimensional imager.When application specifications allow, this method is also potentially applicable to symbols producedby other methods. This is appropriate when direct part marked (DPM) symbols and non-DPM symbolsare being scanned in the same scanning environment. The symbol grade is reported as a DPM graderather than as an ISO/ IEC 15415 grade.
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