How to mark a PCB with a laser marking machine

2026-01-15 Click： 7

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Laser marking machine is an automated equipment that marks on PCB boards and has been widely used in the electronics manufacturing industry. This article will introduce the working principle of laser marking machine and how to mark PCB boards.

1. Working principle of laser marking machine

The core component of the laser marking machine is the laser head. The laser head acts on the marking material through laser light to melt or sublimate it, thereby leaving the marking information on the surface of the material. Laser marking machine usually consists of the following parts:

1. Laser generator: A device that generates laser light.

2. Laser head: Control the laser through a lens to focus it on the PCB to be marked.

3. workbench: A shelf for placing PCB boards.

4. Control panel: Controls the operation of various components of the laser marking machine.

2. How to mark PCB boards by laser marking machines

Using a laser marking machine to mark PCB boards can greatly improve marking efficiency and reduce human error. The following are some basic steps for laser marking machines to mark PCB boards:

1. Install the workpiece: Install the PCB board on the workbench of the laser marking machine, and adjust the workpiece fixture to ensure that the workpiece is stable.

2. Select marking method: Laser marking machine supports multiple marking methods, such as silk printing, color printing, laser marking, etc. Select the appropriate marking method based on needs and actual conditions.

3. Marking: Start the laser marking machine and perform the marking operation. The laser head focuses the laser beam on the PCB to be marked and melts or sublimates, leaving marking information on the material surface.

4. Check the marking results: After marking is completed, use testing equipment to check the marking results. If marking fails, you need to re-mark or process it.

Laser marking machine is an efficient and accurate marking equipment that can permanently leave marking information on the PCB. With the development of the electronics manufacturing industry, laser marking machines will play an increasingly important role in the industry.