Laser Marking Systems / Laser Markers
KEYENCE offers a diverse collection of laser markers, ranging from Fiber to UV to CO2 systems. Our team also delivers their technical expertise, rapid support response time, same-day shipping and personalized integration so you can enjoy a fully realized traceability solution.
World’s Smartest Laser Marker
Mark the same location on any part, anywhere.
The MD-X Series contains a camera inside the laser marking head which can automatically identify a target’s shape. The laser marker can then adjust for X, Y and theta offsets to ensure the marking position is always correct.
The marking system is even able to distinguish between parts and mark each part accordingly.
Mark in-focus on any part, anywhere.
The MD-X laser marker comes standard-equipped with a built-in distance sensor that enables automatic focal corrections. Eliminate manual height adjustments due to part variations in a few simple steps.
Automatic fault protection and monitoring from anywhere.
The new MD-X uses predictive maintenance to eliminate problems before they occur. In the unlikely event of a marking defect, the laser marker features a wide range of diagnostic tools to identify the root cause and deploy countermeasures.
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.
Features of 355 nm Wavelength UV Lasers
The absorption rate is incredibly high for a variety of materials, which allows marking and processing to be performed with minimal heat stress.
Clearer, More Detailed
The MD-U Series is capable of generating greater contrast for more appealing aesthetics and improved readability on 2D codes.
3-Axis Scanner Control
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.
Black anneal (wobble)
Vivid black marking is possible without bumps or cracks.
Clear visibility is maintained even when a mark is painted over.
Cutting control (scratch control)
High-speed scanners reduce product distortion caused by heat.
Tough and Safe Marking Head
MD-F laser engravers are sealed off from the environment (IP64 rated) and include a built-in power monitor for easy maintenance. These lasers also boast a fanless design and KEYENCE’s smallest marking head, making the MD-F series robust enough to perform in dirty, dusty, wet and oily environments.
3-Axis Beam Control
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.
Multiple Beam Options
The ML-Z Series lineup includes short-wavelength and thin beam models for unparalleled laser engraving and etching quality. These models not only eliminate unnecessary product damage but also contribute to more refined marking and processing.
Ultra-high definition marking
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
Unparalleled accuracy and stability
The MD-T’s monocoque design limits warping due to stress and temperature changes. Distortion that occurs during installation is limited to 2 μm or less.
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.
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.