For manufacturers marking complex parts, this system combines UV laser precision with three axis control to improve speed and consistency.
As products become smaller, more complex and more tightly regulated, manufacturers need precise, high quality marking without damaging sensitive materials. Conventional laser markers can cause heat stress, uneven contrast, or slow cycle times, particularly when marking plastics, electronic parts, medical components and fine metals. This has increased demand for marking solutions that combine precision, speed and consistent quality across different materials and production environments.
To meet this need, KEYENCE has introduced the MD U Series three axis UV laser markers. The system uses a 355 nm UV laser wavelength that provides higher material absorption than infrared or green lasers. This enables high contrast, damage free marking while minimizing thermal impact on the workpiece.
The series delivers up to 7 W of output at the marking surface and combines a digital XY scanner with a Z scanner for three axis control. This configuration reduces marking time by up to 50 percent while maintaining fine detail and uniform quality. Integrated distance sensors and cameras automatically correct focus, tilt, and position errors, helping reduce setup time and prevent marking defects.
In addition, the system includes built-in inspection and monitoring functions such as pre marking checks, duplicate marking prevention and image and laser output logging. An air cooled design and sealed optical structure ensure long service life with minimal maintenance.
Key features of the MD U Series
- 355 nm UV laser for high contrast, low heat marking
- Up to 7 W output at the marking surface
- Three axis marking with digital XY and Z scanners
- Automatic focus, tilt, and position correction
- Built in cameras for alignment and inspection
- Wide and ultra wide marking area options
- Air cooled design with long operational life
With its combination of speed, accuracy, and reliability, the series supports demanding marking applications across electronics, automotive, medical and packaging industries while keeping pace with evolving production requirements.
