Quick Overview
Single line laser marking draws only graphic outlines for fast, low-heat hollow marking. Filled laser marking adds hatch lines inside shapes to create solid, high-contrast marks. Both are path parameters in laser marking software, not laser power settings.
Watch our practical comparison demo video below to visually distinguish the two laser marking modes:
Full video on YouTube: https://youtu.be/U70Jn2KITF8
What Is Single Line Laser Marking?
Single line laser marking, also known as outline marking, only scans the contour of text, logos and graphics without internal filling. As a core laser scan path parameter, it features ultra-fast processing speed and minimal heat accumulation on workpieces. It delivers delicate hollow line effects, making it ideal for high-speed mass coding scenarios. Widely applicable to metal, wood, acrylic and all heat-sensitive materials, it is commonly used for serial numbers, barcodes, production dates and fine outline precision marking.
What Is Filled Laser Marking?
Filled laser marking enables internal filling based on graphic outlines. The laser scans dense parallel or cross hatch lines inside the pattern to form solid, full and high-contrast marking results. Operators can adjust hatch spacing and filling angles to control mark depth and uniformity. Due to repeated scanning paths, filled laser marking consumes more processing time and generates higher heat. It is the best choice for bold brand logos, decorative patterns and high-scan-rate QR codes that require outstanding visual recognition.
Key Differences Between the Two Marking Modes
Marking Effect
Single line laser marking creates hollow and delicate outline patterns; filled laser marking produces solid, full and high-contrast marks.
Speed & Heat Generation
Single line marking is faster with low heat and minimal burning risk. Filled marking runs slower with greater heat, requiring careful tuning for heat-sensitive materials.
Software Parameter
Both belong to scan path settings instead of laser power or frequency. Disable hatch filling for single line marking; enable and adjust hatch parameters for filled laser marking.
Application Scenarios
Single line marking fits high-volume assembly line coding; filled marking suits high-quality decorative and identification marking.
How to Choose: Single Line vs Filled Laser Marking
Choose single line laser marking if you prioritize production efficiency and workpiece safety. It perfectly matches high-speed mass production of batch codes, barcodes and fine line marks, especially suitable for thin and easily burned materials.
Choose filled laser marking if you need high-visibility and high-quality marking results. The solid filling effect ensures stable QR code recognition and premium logo display, greatly improving product appearance and brand texture.
Conclusion
Single line laser marking focuses on speed and stability, while filled laser marking focuses on contrast and visual performance. These two essential scan modes apply to all fiber, UV and CO₂ laser marking machines. Selecting the correct marking path according to graphics and material types is the key to improving production yield and marking quality.
FAQ
Q: What is the difference between single line laser marking and filled laser marking?
A: Single line laser marking only engraves graphic outlines for fast, low-heat hollow marks. Filled laser marking uses hatch lines to fill shapes, delivering solid, high-contrast marking effects. Both are scan path parameters in laser marking software.
Q: Are single line laser marking and filled laser marking related to laser power?
A: No. They belong to graphic path settings, not laser power or frequency. Turn off hatch filling for single line marking; enable hatch to use filled laser marking.
Q: Which marking mode is better for heat-sensitive materials?
A: Single line laser marking is preferred. It produces less heat accumulation and reduces risks of burning or material deformation.
Q: Can I use filled laser marking for QR codes?
A: Yes. Filled laser marking creates solid, high-contrast marks, which improves QR code readability and scanning stability.
Q: Which mode is recommended for mass production on assembly lines?
A: Single line laser marking. Its fast processing speed boosts throughput and keeps heat input low for continuous batch coding.
