MD-X laser markers are versatile, general-purpose systems for marking and processing a wide range of materials. These powerful hybrid marking systems boast an internal vision system, full-field autofocus and marking analytics tools.
Part tilting and misalignment commonly occur during production due to product deviation, transportation, or placement. Conventional laser markers can't account for any part deviation, meaning their marks become irregular and faded when a tilt is introduced. Product shifting can also result in misaligned marking positions, requiring fine jig adjustments and program corrections to fix.
MD-X laser markers overcome the problem of tilted or misaligned parts with a built-in distance sensor and vision system.
Left: Out of focus/Right: In focus
Left: Incorrect position/Right: Correct position
MD-U UV laser markers are designed for high-contrast, damage-free marking applications. UV lasers excel at marking plastics, glass, and other heat-sensitive materials. The MD-U's marking head contains an embedded multi-function camera that can autofocus to a part, check-marking quality, and read 2D codes.
Multicolor plastic parts
Coated metal parts
Stainless steel medical parts
Compared to typical lasers, UV lasers use a highly absorptive wavelength (355 nm) to mark parts. The MD-U Series takes advantage of this high absorption rate to ensure that no extra heat stress is applied to materials (including those with high reflectances such as gold, silver, and copper). This minimizes soot and burrs caused by marking and processing.
* The values are for reference only and do not account for surface reflectivity.
MD-F fiber laser markers are high-powered machines designed for deep engraving and high-speed processing. 3-Axis scanning and on-the-fly focal adjustments give the MD-F series a leg-up over conventional laser engravers.
Steel engine blocks
Vehicle body frames
Conventional fiber lasers suffer from sub-optimal scanner controls, which directly affects their marking time and quality. MD-F laser markers optimize their scanner movement, providing better marks in less time for nearly every application.
Vivid black marking is possible without bumps or cracks.
Clear visibility is maintained even when a mark is painted over.
High-speed scanners reduce product distortion caused by heat.
ML-Z CO2 laser markers are incredibly versatile. They can mark opaque objects like paper, wood, rubber, ceramics, and transparent objects like glass. CO2 lasers are also used for gate cutting, drilling, and decapsulation.
Three-dimensional control enables marking on non-flat surfaces such as cylinders, slopes, and stepped shapes. It also simplifies product and tooling changeovers. The wide 300 x 300 mm area can efficiently mark and process products simultaneously, helping reduce equipment costs.
MD-T green laser markers use an integrated telecentric lens to keep the laser beam perpendicular across the entire marking surface. This ensures micron-level marking and processing throughout the target area.
Copper lead frames
Small stainless steel objects
Ceramic LED chips
Glass-epoxy BGA packages
Traditional lasers struggle to keep their marking area in focus due to F-Theta lenses. MD-T laser etching machines use telecentric lenses to emit their beam straight down across the entire field.
Conventional: Diagonal incident laser beam
MD-T: Perpendicular incidence over the entire area
Simply put, laser markers use high-energy light to mark the surface of a part. Laser markers vary by the wavelength of light, and different wavelengths are optimized for marking and processing different materials.
The majority of industrial laser markers are YVO4 lasers, fiber lasers, UV lasers, and CO2 lasers.
Laser markers are used to permanently mark text, logos, barcodes, or 2D codes on parts in all industries. Common marking types include oxidizing, annealing, engraving, etching, discoloration, and processing.
Inkjet and pad-printing systems leave impermanent marks that can be rubbed off or fade away. Laser marking does not wear off or contaminate the product being marked.
Because laser markers use light to directly mark products, there is no need to purchase consumables, clean print heads, or perform other routine maintenance tasks that are necessary with conventional ink and label marking methods. This also helps reduce associated maintenance costs.
Typical systems can only mark in 2 dimensions (X and Y). KEYENCE laser markers have 3-axis beam control, allowing them to mark across a larger area, compensate for part variation, and correct for mounting restrictions with zero physical equipment adjustments.
Safe products and safe working environments are critical in automotive manufacturing. There is a high demand for product traceability and process management on both metal and plastic parts, and laser markers are perfectly designed to meet those needs.
Electronic parts require high-quality and low-damage traceability. As part sizes continue to shrink, the demand for precision processing has increased. Laser markers are increasingly becoming the norm thanks to their small beam size and non-contact marking method.
The majority of medical instruments are small and undergo repeated disinfectant or sterilization processes. This section introduces and explains UDI medical marking applications on plastic and metal instruments.
Learn the principles of metal marking and see marks on aluminum, stainless steel, iron, copper, cemented carbide, and gold plating.
Learn the principles of plastic marking and see marks on a variety of materials such as ABS, epoxy, and PET.
This section describes the optimal laser marker for glass, paper, ceramics, PCBs, and other materials and provides marking examples.
Laser markers work by scanning a focused beam of high-energy light across the surface of a part in the desired pattern. Different contrast, depths, and surface finishes can be achieved depending on the laser wavelength and part material.
Laser marking causes discoloration on the surface of a part, whereas laser engraving actually removes material and "digs in" to a part.
Practically speaking: no. Laser etchers interact directly with the surface of a part, so the only real way to remove a laser mark is to remove the material it's on.
KEYENCE has put together a rich collection of practical, knowledge-based information for getting the most out of a laser marker. This website contains actual marking applications and advice on how to choose a laser marker.
This quick guide introduces the basics of metal marking. Learn why different wavelengths matter and discover the various ways laser light interacts with metal parts.
Choosing the right laser marker wavelength is extremely important for plastic marking. Learn what lasers work best for marking, processing, and coloring plastic in this guide.
2D codes have become a near-universal standard for traceability. This must-read document covers everything from code scanning principles, laser installation, predictive maintenance, and more.
2D codes are used to store date codes, lot codes, serial numbers, and more. Users who are considering 2D code marking should read this laser marking guidebook.
Some laser marking applications require integration with multiple devices. KEYENCE provides a total marking solution, from X/Y stages and indexing systems to head traversal systems. Learn more in this brochure.
This booklet covers a wide range of laser processing techniques - such as cutting, drilling, and deep engraving - as well as welding and soldering that are unique to lasers.