QR Code Best Practices

QR Code 인쇄: 용지, 잉크 및 해상도

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Print specifications: DPI, ink types, paper stock, lamination, and quality control for reliable QR code reproduction.

  
  

    
  








  
  

    
    
      
      
  1. 
        QR Code Printing: Paper, Ink, and Resolution
      
    2. 
      
      
  2. 
        Resolution (DPI)
      
    3. 
      
      
  3. 
        Ink Considerations
      
    4. 
      
      
  4. 
        Paper and Substrate
      
    5. 
      
      
  5. 
        Lamination
      
    6. 
      
      
  6. 
        Key Takeaways
      
    7. 
      
    

  









  
  

  
  

    
    

      
QR Code Printing: Paper, Ink, and Resolution


Print quality directly affects QR code scannability. Understanding DPI, ink behaviour, and paper characteristics prevents costly reprint cycles.


Resolution (DPI)


Minimum DPI by QR code size and module count." data-category="QR Code Structure">version:






QR Size
Version 2 (25 mod)
Version 5 (37 mod)
Version 10 (57 mod)






2 cm
318 DPI
470 DPI
724 DPI




3 cm
212 DPI
314 DPI
483 DPI




5 cm
127 DPI
188 DPI
290 DPI




10 cm
64 DPI
94 DPI
145 DPI






Rule: Each module must be at least 2 pixels wide at print resolution. Lower resolution causes module edges to blur together.


Ink Considerations


Laser printing: Sharp edges, high contrast, excellent for QR codes. Preferred for small codes on business cards and labels.


Inkjet printing: Adequate for larger codes (3 cm+). Watch for ink bleed on absorbent paper, which merges adjacent dark modules.


Offset printing: Professional quality. Specify minimum dot size to prevent fine modules from dropping out in the plate-making process.


Screen printing: Works for large-format codes. Mesh density must support the module size. Minimum 200-mesh for codes under 10 cm.


Paper and Substrate






Material
QR Code Performance
Notes






Smooth coated paper
Excellent
Best for small, high-density codes




Uncoated bond
Good
Slight ink absorption; use larger modules




Newsprint
Fair
Significant absorption; increase size and EC level




Cardboard
Good
Smooth side preferred




Vinyl/plastic
Excellent
Weather-resistant; matte finish preferred




Metal
Good-Excellent
Laser etching or screen printing




Fabric
Fair
Large modules only; thermal transfer best






Lamination


    

  • Matte lamination: Ideal — reduces glare, preserves contrast
    • 

  • Gloss lamination: Can cause scanning issues from reflective glare
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  • UV coating: Similar to gloss — use selectively (matte spot UV over the QR code)
    • 



Key Takeaways


    

  • Each module needs at least 2 pixels at print resolution
    • 

  • Laser printing is ideal for small QR codes; offset for production runs
    • 

  • Smooth paper produces sharper modules than absorbent stock
    • 

  • Matte lamination is preferred over gloss to avoid scanning glare
    • 

  • Test on the actual production paper before the full print run
    •