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Direct Part Marking (DPM) Explained

Posted April 4, 2016

DPM-Example-2While most barcodes you come across are printed on a label or paper-packaging of a product, in the manufacturing world and work-in-process applications many parts or components need to be marked with a barcode directly. Direct Part Marking is a process that  allows  users to mark a barcode directly on an item instead of printing the barcode on a label.

There are 3 main technologies available for DPM:  laser or chemical etching, dot peening  and ink jet printing. Each of these has specific  advantages  and disadvantages  in terms  of durability, cost and ease of reading.   The main advantages  of codes with  DPM technology are that  the code is permanently marked  on a surface and will  survive  for a long  time  (ideally  forever), regardless  of the  stress the part is passing  through during its’ life cycle. The main  reasons to choose codes with  DPM technology are:

  • Items that need to pass through harsh testing processes  (chemicals  agents, thermal cycles, oil, moisture, etc.)
  • Items that need to  be tracked  during  their  entire life cycle
  • Very small items (difficult to label)

DPM technology was first  adopted  mainly  by the automotive and general mechanical industries. Currently, the popularity of codes using  DPM technology has spread into  different sectors  including electronics, chemicals  and healthcare  industries.

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Introducing Datalogic’s Powerscan DPM Imagers – PD9530-DPM and PD8590-DPM

Posted June 12, 2013

2013-06-12_0956Datalogic has introduced a new family of handheld area imagers specifically designed for applications based on codes printed with Direct Part Marking (DPM) technology. This new PowerScan family is a blend of the Datalogic experience with optical systems, hardware architecture, mechanical design and decoding software. Two different models are available allowing the customers to choose the best price/performance combination for their specific needs.

The PD9530-DPM imager has a standard illumination system and bases its reading capability on the decoding software. This imager offers great performance on a wide set of bar code types, but does not cover all DPM situations.

The PD8590-DPM imager is a highly specialized scanner with a multi-axis illumination system specifically designed for reading DPM technology. The reading performance relies on the combination of the decoding software and the illumination system. This imager can read all types of bar codes printed with DPM technology regardless of the type of surface involved.

Aim. trigger. decode: it’s that simple!

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