Minimun Lieweight&Minimum Character of Laser Marking Machine

When discussing minimum line weight and minimum character size for a laser marking machine, these specifications depend on several factors, including the laser type, focusing optics, material properties, and marking speed.

1. Minimum Line Weight (Line Width)

• Fiber Lasers: Typically achieve 10–50 μm (micrometers) line width.

• CO₂ Lasers: Usually 50–150 μm, depending on focus.

• Ultrafast (Picosecond/Femtosecond) Lasers: Can go below 10 μm for ultra-fine markings.

Factors affecting line width:
✔ Spot size (smaller spot = finer lines)
✔ Beam quality (M² factor) (lower M² = better focus)
✔ Material absorption (some materials allow finer marking)

2. Minimum Character Size

• Standard Lasers: ~ 0.2–0.5 mm height (for readable text).

• High-Precision Lasers: Can mark characters as small as 0.1 mm, but readability depends on font and material.

Key Considerations:

✔ Laser wavelength (fiber lasers at 1064 nm are better for metals, CO₂ for organics).
✔ Galvo speed & lens quality (affects precision).
✔ Material type (metals vs. plastics vs. ceramics).

Best Machines for Fine Marking

• Fiber Lasers (e.g., IPG, SPI): Best for metals, fine details.

• UV Lasers: Good for plastics/glass with minimal heat impact.

• Green Lasers (532 nm): Useful for sensitive materials like PCBs.

Would you like recommendations for a specific material or application?