Scanning low-contrast codes on black resin

DataMatrix (2D codes) marked by a laser marker on the black resin molds of electronic components and IC chips have extremely low contrast with the material and are prone to uneven print density, which has been a challenge for conventional code readers, leading to frequent reading errors. This directly results in production line stoppages and loss of traceability information, posing a major quality control problem.

KEYENCE's SR-X Series AI-powered code reader provides a specialized solution for reading such low-contrast, challenging DPM (direct part marking) codes. Its built-in advanced image processing functions instantly capture the slight differences in shading between the background and the mark, automatically optimizing the contrast. Furthermore, its unique powerful reading algorithm accurately decodes even faded or partially missing codes, achieving overwhelmingly stable reading. This ensures reliable reading of even low-contrast codes on black resin that were previously given up on, dramatically improving the accuracy of traceability management and contributing to stable production line operation.

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