Introduction
In the electronics manufacturing industry, laser marking on PCB has become an essential process for product traceability, quality control, and identification. Instead of using traditional ink or stickers, modern manufacturers now rely on laser marking PCB machines to engrave QR codes, barcodes, serial numbers, and logos directly onto circuit boards with unmatched precision and durability.
LansuLaser, a leading Chinese manufacturer of industrial marking solutions, provides advanced PCB laser marking systems that combine UV, CO₂, and Fiber lasers with CCD visual positioning and MES integration for fully automated, high-accuracy marking.
What is Laser Marking on PCB?
Laser marking PCB is a non-contact, automated process that uses a focused laser beam to permanently mark the surface of a Printed Circuit Board (PCB). The laser alters the material through color change, oxidation, or material ablation, forming a clear and permanent mark without damaging delicate electronic components.
Unlike traditional printing or labeling, laser marking offers several advantages:
- No ink or label consumables required
- Resistant to heat, abrasion, and chemicals
- Provides consistent precision and readability
- Seamlessly integrates into automated production lines
How Laser Marking PCB QR Code Works
- Design Input – The marking data, such as QR codes, text, serial numbers, or logos, is designed using CAD software.
- Positioning and Detection – A high-resolution CCD vision system automatically locates the precise marking position and detects board orientation or defects.
- Laser Marking – The laser beam, controlled by a high-speed galvanometer scanner, etches the QR code onto the PCB surface with high precision.
- Verification – The same vision system automatically verifies the readability and quality of each code (1D/2D barcode, DataMatrix, or GS1 code).
- MES Integration – The machine connects with MES/ERP databases to retrieve and store work order numbers, serial data, and quality results automatically.
Key Features of LansuLaser PCB Laser Marking Machine
1. High Precision Positioning
Equipped with an intelligent CCD visual positioning system, LansuLaser’s PCB laser marker achieves ±0.02 mm repeat positioning accuracy, ensuring every QR code is consistently sharp and scannable.
2. Intelligent MES System
Supports full MES and ERP integration for traceability, error prevention, and real-time data synchronization. This allows manufacturers to connect marking data directly to production records.
3. Multi-Laser Compatibility
Compatible with UV, Fiber, and CO₂ laser sources, enabling the marking of various PCB materials:
- UV Laser – Ideal for flexible or heat-sensitive materials with minimal thermal damage.
- Fiber Laser – Excellent for marking metals, aluminum substrates, and reinforced steel sheets.
- CO₂ Laser – Suitable for non-metallic materials such as epoxy resin (FR-4), glass, and ceramics.
4. Flexible Equipment Structure
LansuLaser offers multiple configurations to meet different production requirements:
- Single-track or dual-track conveyor systems
- Top and bottom marking heads for double-sided marking
- Built-in flipping mechanism for multi-angle marking
5. High-Speed Automation
Integrated conveyor design supports inline operation, completing marking, reading, and verification in one automated cycle—significantly improving production efficiency.
6. Clean and Eco-Friendly
The process uses no consumables and produces no pollutants, making it both cost-effective and environmentally friendly.
Technical Specifications (Example: LS-45 Series)
| Parameter | Specification |
|---|---|
| Laser Type | UV / Fiber / CO₂ |
| Marking Accuracy | ±0.02 mm |
| Maximum PCB Size | 520 × 520 mm |
| Cooling Method | Air or Water Cooling |
| Software Interface | MES, IMS, PMS, Database compatible |
| Power | 2.0–2.5 KW |
| Functions | CCD visual positioning, bad mark detection, MES integration |
Applications of PCB Laser Marking
Laser marking technology is widely used in industries where precision and traceability are critical:
- Mobile phone circuit boards
- Automotive electronic control units
- LED lighting modules and power boards
- Semiconductor components and ICs
- Medical devices and instruments
- Aerospace electronics and defense systems
Example:
A client required a 5×5 mm QR code to be marked on blue solder mask PCBs while maintaining a fully automated process. LansuLaser provided a UV laser marking solution integrated with CCD visual alignment and automatic loading/unloading conveyors, successfully achieving real-time online marking and verification within their SMT line.
Why Choose LansuLaser PCB Laser Marking Machine?
- Over 10 Years of Experience – Proven reliability and performance in industrial laser applications.
- Customizable Solutions – Support for MES integration, CCD systems, and dual-head configurations.
- Smart Error-Proofing – Automatically detects bad marks or reversed PCBs.
- High Readability – Compatible with Keyence SR1000 readers for real-time QR verification.
- Global Support – Quick service response and technical assistance worldwide.
Conclusion
As electronics become more compact and manufacturing speeds increase, laser marking PCB technology is now indispensable for ensuring quality and traceability.
LansuLaser’s PCB laser marking machines deliver superior accuracy, speed, and durability, helping manufacturers achieve smarter, more efficient production lines.
If you’re looking for a reliable, high-speed PCB QR code laser marking solution — contact LansuLaser today.
📞 Whatsapp: +86 18925707676
📧 Email: info@lansulaser.com
🌐 Website: lansulaser.com
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