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What Is Laser Marking?

What Is Laser Marking?

Marking is split into two main categories: "contact marking" and "non-contact marking”. Laser marking is a type of non-contact marking. This section introduces the basic principles and applications of laser marking.

Laser marking applications

Marking character strings (such as dates and serial numbers)

Laser light is used to mark character strings such as dates, serial numbers, manufacturing numbers, and models directly onto a product. The advantages of laser marking include permanence, flexibility, and reduced running costs. Laser marking makes it possible to mark clearly on different shapes, even those with curved or contoured surfaces.

  • Bearings
  • Molded packages
    Molded packages
  • LED flashlights
    LED flashlights

2D code marking

Laser light is used to mark data matrices, QR codes, barcodes, and more. As the need for better traceability increases, marking 2D codes is a great way to fit more information into a limited space. Laser marking can be done through black-annealed marking and white marking, making it possible to create a high-contrast code that is easily readable by code readers.

  • Engine blocks
    Engine blocks
  • Switch covers
    Switch covers
  • ECU PCBs
    ECU PCBs

Logo marking

Data can be imported to the software, which instructs the laser to mark various designs such as logos and warnings. With conventional marking methods, printing and labeling made it difficult to change printed content when changing designs, and ever-increasing running costs such as for ink and labels were unavoidable. Laser marking offers flexibility for changing designs, as well as virtually no running costs.

  • Instrument panel switches
    Instrument panel switches
  • Blades
  • Magnifying glasses
    Magnifying glasses

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Laser marking principles

Laser marking is used for marking logos, product names, serial numbers, model numbers, and other information onto a product by irradiating the target with laser light to melt, scorch, peel, oxidize, cut, or discolor the surface.
Laser markers can be used to perform various marking tasks, including the following.

Paint peeling Surface peeling Color development
This method provides contrast against the base material color by peeling the paint, printed surface, or plating layers of a target for marking. The surface of a target is removed, marked, or engraved in some way. This method is generally referred to as engraving. The surface of a target is scorched, oxidized, or discolored by the laser light, resulting in a high-contrast mark.
Air filters
Air filters
Wiring instrument
Wiring instrument
Paint peeling
Surface peeling
Color development

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This is a must-read if you want to check the laser lineup first! 3-Axis Laser Marker General Catalog [Download]


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