{"id":12515,"date":"2016-04-04T10:00:01","date_gmt":"2016-04-04T16:00:01","guid":{"rendered":"https:\/\/www.barcodesinc.com\/news\/?p=12515"},"modified":"2016-04-04T10:00:01","modified_gmt":"2016-04-04T16:00:01","slug":"direct-part-marking-dpm-explained","status":"publish","type":"post","link":"https:\/\/www.barcodesinc.com\/news\/direct-part-marking-dpm-explained\/","title":{"rendered":"Direct Part Marking (DPM) Explained"},"content":{"rendered":"<p><a href=\"https:\/\/www.barcodesinc.com\/news\/wp-content\/uploads\/2016\/04\/DPM-Example-2.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright wp-image-12521\" src=\"https:\/\/www.barcodesinc.com\/news\/wp-content\/uploads\/2016\/04\/DPM-Example-2.jpg\" alt=\"DPM-Example-2\" width=\"262\" height=\"294\" align=\"right\" srcset=\"https:\/\/www.barcodesinc.com\/news\/wp-content\/uploads\/2016\/04\/DPM-Example-2.jpg 628w, https:\/\/www.barcodesinc.com\/news\/wp-content\/uploads\/2016\/04\/DPM-Example-2-268x300.jpg 268w\" sizes=\"(max-width: 262px) 100vw, 262px\" \/><\/a>While most barcodes you come across are <a href=\"https:\/\/www.barcodesinc.com\/cats\/printing.htm\">printed on a label<\/a> or paper-packaging of a product, in the <a href=\"https:\/\/www.barcodesinc.com\/solutions\/industry-solutions\/manufacturing.htm\">manufacturing<\/a> world and <a href=\"https:\/\/www.barcodesinc.com\/solutions\/market-applications\/work-in-process.htm\">work-in-process applications<\/a> many parts or components need to be marked with a barcode directly.\u00c2\u00a0Direct Part Marking is a process that\u00c2\u00a0 allows \u00c2\u00a0users to mark a barcode directly on an item instead of printing the barcode on a label.<\/p>\n<p>There are 3 main technologies available for DPM: \u00c2\u00a0laser or chemical etching, dot peening \u00c2\u00a0and ink jet printing. Each of these has specific \u00c2\u00a0advantages \u00c2\u00a0and disadvantages \u00c2\u00a0in terms \u00c2\u00a0of durability, cost and ease of reading.\u00c2\u00a0 \u00c2\u00a0The main advantages \u00c2\u00a0of codes with \u00c2\u00a0DPM technology are that \u00c2\u00a0the code is permanently marked \u00c2\u00a0on a surface and will \u00c2\u00a0survive \u00c2\u00a0for a long \u00c2\u00a0time \u00c2\u00a0(ideally \u00c2\u00a0forever), regardless \u00c2\u00a0of the \u00c2\u00a0stress the part is passing \u00c2\u00a0through during its&#8217; life cycle. The main \u00c2\u00a0reasons to choose codes with \u00c2\u00a0DPM technology are:<\/p>\n<ul>\n<li>Items that need to pass through harsh testing processes \u00c2\u00a0(chemicals \u00c2\u00a0agents, thermal cycles, oil, moisture, etc.)<\/li>\n<li>Items that need to \u00c2\u00a0be tracked \u00c2\u00a0during \u00c2\u00a0their \u00c2\u00a0entire life cycle<\/li>\n<li>Very small items (difficult to label)<\/li>\n<\/ul>\n<p>DPM technology was first \u00c2\u00a0adopted \u00c2\u00a0mainly \u00c2\u00a0by the automotive and general mechanical industries. Currently, the popularity of codes using \u00c2\u00a0DPM technology has spread into \u00c2\u00a0different sectors \u00c2\u00a0including electronics, chemicals \u00c2\u00a0and <a href=\"https:\/\/www.barcodesinc.com\/solutions\/industry-solutions\/healthcare.htm\">healthcare <\/a>\u00c2\u00a0industries.<\/p>\n<p><!--more--><\/p>\n<p><strong>Laser Marking<\/strong><\/p>\n<p>Laser Marking is currently the most \u00c2\u00a0popular choice \u00c2\u00a0used with \u00c2\u00a0DPM technology. It is compatible with \u00c2\u00a0a wide range of materials \u00c2\u00a0and offers \u00c2\u00a0several benefits: high \u00c2\u00a0quality marking, high \u00c2\u00a0throughput and no consumables.Laser Marking works \u00c2\u00a0by creating a change of the material characteristics through the interaction with \u00c2\u00a0a laser beam.<\/p>\n<p>Depending on the laser type and power, \u00c2\u00a0marking is obtained through the following methods:<\/p>\n<table style=\"height: 200px;\" border=\"1\" width=\"600\" cellpadding=\"10\">\n<tbody>\n<tr>\n<td width=\"120\"><strong>Process<\/strong><\/td>\n<td width=\"378\"><strong>Method<\/strong><\/td>\n<td width=\"138\"><strong>Ideal Material<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"120\">Ablation<\/td>\n<td width=\"378\">Removal of a surface layer<\/td>\n<td width=\"138\">PCB, Plated Metal<\/td>\n<\/tr>\n<tr>\n<td width=\"120\">Engraving<\/td>\n<td width=\"378\">Removal of a material part in order to create a groove<\/td>\n<td width=\"138\">PCB, Glass, Metals<\/td>\n<\/tr>\n<tr>\n<td width=\"120\">Color Change<\/td>\n<td width=\"378\">Melting or burning of the surface<\/td>\n<td width=\"138\">Plastic Wood<\/td>\n<\/tr>\n<tr>\n<td width=\"120\">Annealing<\/td>\n<td width=\"378\">Surface oxidation<\/td>\n<td width=\"138\">Iron, Stainless Steel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><strong>Dot Peening<\/strong><\/p>\n<p>Dot peening \u00c2\u00a0marking is created \u00c2\u00a0by mechanical percussion, which actually punches \u00c2\u00a0holes in the material, as shown below. The holes created by the mechanical percussion cause a different reflection\/diffusion of the incident light on the surface to recreate \u00c2\u00a0the dark and light elements \u00c2\u00a0that \u00c2\u00a0characterize a bar code. \u00c2\u00a0Dot peening \u00c2\u00a0is generally used with \u00c2\u00a0metal parts \u00c2\u00a0and it is very common in the automotive industry.<\/p>\n<p><strong>Ink Jet Printing<\/strong><\/p>\n<p>Ink jet\u00c2\u00a0 printing mark is created by directly spraying ink onto \u00c2\u00a0the surface \u00c2\u00a0of the part, \u00c2\u00a0producing a pattern of spots.<\/p>\n<p>The ink jet\u00c2\u00a0 method is generally compatible with \u00c2\u00a0any substrate material, such as plastic, metal, glass, etc.\u00c2\u00a0 \u00c2\u00a0Since this \u00c2\u00a0method is based on an ink deposit, the ink marking is less persistent than \u00c2\u00a0other \u00c2\u00a0methods and could be inappropriate for harsh production environments.<\/p>\n<p><strong>Scanning\u00c2\u00a0DPM Barcodes<\/strong><\/p>\n<p><a href=\"https:\/\/www.barcodesinc.com\/cats\/barcode-scanners\/dpm.htm\">DPM scanners<\/a> are usually \u00c2\u00a0equipped with \u00c2\u00a0specialized illumination systems in order\u00c2\u00a0 to improve the readability of codes using \u00c2\u00a0DPM technology. The object \u00c2\u00a0surface can be reflective, shiny, polished, or be a contrasting rough surface. Depending on the marking technology used, the code can be more \u00c2\u00a0or less visible \u00c2\u00a0with \u00c2\u00a0more\u00c2\u00a0 or less contrast when compared to the background.<\/p>\n<p>DPM specific scanners are available in both handheld and fixed mount models to fit manual or automated applications.<\/p>\n<p>For assistance finding the right DPM scanner to meet the specific needs or your marking type, <a href=\"https:\/\/www.barcodesinc.com\/support\/contactinfo.htm\">contact us<\/a> at Barcodes, Inc.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>While 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.\u00c2\u00a0Direct Part Marking is a process that\u00c2\u00a0 allows \u00c2\u00a0users to mark a barcode directly on an item instead of printing the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[224],"tags":[1554,575,1672,290,1673,40,1671,574,324,728,1674],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.0 - 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