Laser Marking Systems / Laser Markers
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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.
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.
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.
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.
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.
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.
Benefits of Laser Markers
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.
Laser Marker / Laser Engraver Case Studies
Laser marking in the automotive industry
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.
Laser marking in the electronics industry
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.
Laser marking in the medical industry
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.
Laser marking on metal
Learn the principles of metal marking and see marks on aluminum, stainless steel, iron, copper, cemented carbide, and gold plating.
Laser marking on plastic
Learn the principles of plastic marking and see marks on a variety of materials such as ABS, epoxy, and PET.
Laser marking on other materials
This section describes the optimal laser marker for glass, paper, ceramics, PCBs, and other materials and provides marking examples.
Frequently Asked Questions About Laser Marking Systems / Laser Markers
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.
