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    Direct Part Mark (DPM) Code Reading

    DPM code reading on a semiconductor wafer

    Extremely Challenging Codes

    Direct Part Marks (DPM) are codes, symbols, and text that are etched or printed directly onto the surface of a part instead of affixed by a label.  DPM codes, which are most commonly Data Matrix or QR codes, are used for track and trace purposes in a variety of industries, particularly automotive and electronics manufacturing. 

    The benefit of DPM codes is that they are permanent and cannot be easily removed, obscured, or damaged.  DPM codes are also a popular choice for parts with textured surfaces (label will not stick) and very small parts (label will not fit). Because DPM codes last as long as the part itself, the piece can be identified easily identified throughout its entire lifecycle, also known as "cradle-to-grave" traceability.

    However, DPM codes can be extremely challenging to read due to poor contrast, so finding a DPM code reading solution is essential for reliable identification. 

    Challenges
    Solutions
    Featured Products
    Challenges of DPM Code Reading
    DPM code reading on an automotive part
    Contrast, Variability, and Surface Imperfections

    Since they are etched directly onto the part, DPM codes are very low contrast compared to traditional black barcodes printed on a white background.  Plus, there can be significant variability in DPM codes, where and how they are printed on a surface, and features of the surface itself that can significantly impact code readability. 

    For example, many DPM codes are etched onto reflective, curved, or uneven surface which can be very challenging for barcode readers to identify reliably. 

    Also, the surface is rarely uniform, meaning that it may also contain granules, stripes, streaks, or other irregularities and imperfections that can further interfere with reliable code reading. 

    Advanced imager-based code readers use special DPM code reading algorithms to solve these applications reliably.  Besides, low angle lighting or the use of different color LEDs can be used to create additional contrast and improve code visibility.   

    Solutions for DPM Code Reading
    DPM code reading using blue LED light
    Low Contrast DPM Code on a Reflective Surface

    Imager-Based Code Reader with Multicolor LEDs

    • In automotive manufacturing, to ensure that vehicle components can be traced throughout their entire life cycle, Data Matrix and other 2D codes are permanently etched into the surface of each component. 
    • The enhanced contrast between the code and the surface of the component allows the barcode reader to capture a detailed image of the inspection area with every aspect of the Data Matrix code well defined. 
    • The information contained in the code is then verified and sent over an Ethernet connection to the factory management system which logs the data for traceability.
    Difficult-to-Read Codes on Small Objects

    Reliable Code Reading in Confined Spaces

    • DPM codes are also standard in electronics manufacturing.
    • These codes are especially challenging because, in addition to being low contrast, the codes are also tiny, as they are printed directly onto electronic components.
    • Also, there is often limited space to mount a code-reading device. 
    • The imager-based code reader uses unique algorithms to reliably identify small, low contrast DPM codes and can send data via Ethernet to PLC controls for traceability. 
    Electronics
    The New ABR Series of Barcode Readers

    Learn how the ABR Series of powerful imager-based barcode readers reliable read the most challenging codes.

    More Solutions to Reading Challenging Codes

    Imager-Based Barcode Readers from Banner

    Need to read other challenging codes besides DPM codes?  Imager-based barcode readers reliably read 1D and 2D barcodes in any orientation. 

    Banner Engineering offers code reading solutions that can reliably decode difficult-to-read, low quality, and damaged codes—as well as codes printed on highly reflective surfaces. 

    Watch the video to learn more about what's new, or browse our selection of imager-based code reading products. 

    Featured Products
    ABR 7000 imager based barcode reader
    ABR 7000

    Imager-Based Barcode Reader

    ABR 7000 条码读取器的解码能力出色，提供多种分辨率和多种镜头选择。

    • abr 7000 条码读取器提供高级功能，包括延伸读取距离和视野、高级照明、各种焦距（包括自动对焦），并且能够将多个读取器串联起来。
    • 强大的解码功能，难以处理的一维和二维码（包括 DPM 和低对比度代码）也能读取
    • 使用板载按钮或安装了邦纳免费操作软件 - Barcode Manager 的电脑快速配置
    • 在一个套件中提供集成式 LED 照明和简单的焦点调整，充分发挥灵活性
    • 多种镜头选项，可用于简化设置和配置，包括由软件调整的自动对焦，轻松适应读取距离的变化。
    • 工厂通信选项包括以太网通信和串行通信，可在制造车间进行集成。
    • 嵌入式 Web 服务器接口，用于监控网络上的图像和统计信息
    ABR3009-ethernet-lit
    ABR 3000

    Compact Imager-Based Barcode Reader

    abr 3000 条码读取器外形紧凑，解码能力一流，并且提供多种分辨率和多种镜头选项。

    • 强大的解码能力，难以读取的一维和二维码也能读取
    • abr 3000 是狭小空间和近距离读码的理想选择
    • 紧凑的金属外壳，适用于工业环境
    • 使用板载按钮或安装了邦纳免费操作软件 - Barcode Manager 的电脑快速配置
    • 在一个套件中提供集成式LED照明和简单的焦点调整，充分发挥灵活性
    • 提供以太网或usb通信选项，可集成到生产车间
    • 嵌入式服务器接口，用于监控网络上的图像和统计信息

     

    ABR 3000 compact imager based barcode reader
    iVu BCR imager-based barcode reader

    iVu BCR Series

    Imager-Based Barcode Reader

    iVu BCR 系列条码读取器将强大的解码能力和使用便捷的特点融于一体，能解决高难度的追溯性应用。这些多功能条码读取器提供各种各样的镜头、照明和用户界面选项。 

    • 读取广泛的一维和二维条码，包括损坏、变形和其他难以读取的条码
    • 能够在一次检测中读取任何方向的多个条码     
    • 使用集成的触摸屏、远程触摸屏或 PC 界面来设置、管理和监控检测
    • 以太网和串行通信协议简化设备集成，实现工业物联网数据采集
    • 坚固的 IP67 级外壳，是狭小空间和工业环境的理想选择
    • 众多的集成照明选项简化了安装，优化了对比度
    • 可更换镜头，包括各种标准选件和 C 型支架选件，能满足任何应用的需求

     

    See More Track and Trace Applications