High Contrast, Low Risk: Black Marking for Medical Technology

FDA and MDR UDI requirements make permanently readable codes on surgical instruments, implants, and other medical devices indispensable. Ultrashort pulse lasers enable gentle, deep‑black, matte, and non‑reflective markings by creating nanostructures on the surface. The result is durable, high‑contrast, biocompatible markings with reliable machine readability, even on highly polished medical‑grade stainless steel.

In addition to explaining the physical principles behind black marking, the technical article examines four key challenges of direct part marking, analyzes practical use cases from medical technology, and summarizes the results of long‑term durability tests under realistic reprocessing conditions. The article is complemented by hands‑on guidance on process design, inline inspection, and quality assurance, all of which are critical in regulated manufacturing environments.

The article addresses manufacturers and users seeking UDI‑compliant, process‑reliable, and future‑ready marking solutions, demonstrating why, in medical technology, safe marking results depend not only on the marking effect itself but on a holistic, stable, automated marking workflow.

The full article is available for download: