Solutions for Unclear Marking with Fiber Laser Marking Machines

People often use fiber laser marking machines for processing or production. After some time, some users may notice that the characters marked by the machine become unclear. Why does the fiber laser marking machine produce blurry characters? How can this be resolved?

1. Extended usage period.

Every fiber laser marking machine has a limited operational lifespan. After prolonged use, the laser module reaches its service life, causing a decline in laser intensity and resulting in blurred markings.

Solutions:

First, ensure proper operation and routine maintenance of the fiber laser marking machine. It's common to observe that machines of the same model and manufacturer may exhibit varying lifespans—some shorter, some longer—primarily due to user operation and maintenance practices. Second, when the machine reaches its service life, replacing the laser module can resolve the issue.

2. Operational Issues

Common causes include excessive marking speed or insufficient laser power supply current.

Solutions:

First, identify the cause of blurred markings. If speed is too high, reduce it to increase fill density. If power supply current is inadequate, increase the current setting or boost the power supply output.

3. Equipment Issues. 

Examples include problems with the field lens, galvanometer mirror, laser output lens, etc. A dirty, scratched, or oil-contaminated field lens affects focusing. Uneven heating of the galvanometer mirror may cause noise or cracking, or damage the mirror's coating layer. Contamination of the laser output lens is another potential issue.

Solutions:

During production of fiber laser marking machines, install exhaust fans to prevent smudging. For smudged or dirty lenses, wipe them clean. If wiping is ineffective, send them to a professional manufacturer for repair. For broken galvanometers, replacement is recommended. Finally, seal the galvanometer system to prevent moisture and dust ingress.

Through the above explanation, you should now understand some causes and solutions for blurred fonts in fiber laser marking machines. In reality, numerous factors can affect marking clarity. If uncertain, it's best to send the machine to the manufacturer for resolution.

For more information on laser marking machines, laser welding machines, and laser cutting machines, please visit the official website of Top Optics Laser: http://www.tollaser.com