The practice of Direct Part Marking (DPM) is used across many industries to identify an array of end use items. This process, also referred to as machine-readable identification, is prevalent in the automotive and aerospace industries for marking alphanumeric and 2D DataMatrix codes on individual parts and assemblies.
Manufacturers can use DPM to track parts throughout the manufacturing process and supply chain. It is ideal for locating parts for service or recall and can assist in liability and warranty resolution.
The three main elements in DPM are encoding, marking and verifying. Encoding is the rendering of a string of data into a pattern of dark and light cells that includes data, padding and error correction bytes to then be used by the marking device. Marking is the imprinting of content directly on your part with the appropriate technology for the substrate. Verification is the act of confirming code accuracy and quality. This is most commonly performed immediately following product imprinting at the marking station