In QR đúng cách
Kích thước, độ phân giải và vật liệu ảnh hưởng mạnh tới quét.
Intro
Print quality has a direct impact on scan success. Size, resolution, and material all matter.
Preparation
Decide the placement and viewing distance, then choose size and material accordingly.
Steps
Use 300DPI or SVG, print at least 3cm, and prefer matte finishes to avoid glare.
Example
Switching from glossy to matte paper and enlarging the code fixed night‑time scan failures.
Mistakes
Low‑resolution PNGs, glossy coatings, and inverted colors are common causes of failure.
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- SVG or 300DPI
- 3cm+ size
- Matte material
- Real‑world testing
- Sample print first
Operations
Document print specs so vendors reproduce consistent quality across batches.
Aftercare
Inspect outdoor prints for weather damage and replace when needed.
Tips
Always test on location and in the expected lighting conditions before mass printing.
FAQ
PNG or SVG for print?
SVG is recommended because it scales without quality loss.
Can I use a colored background?
Yes, as long as contrast stays high and the code remains legible.
Does sticker material matter?
Yes. Glossy stickers can reflect light and reduce scan reliability.
Tóm tắt
- 300 DPI/2.5–3 cm
- Bề mặt mờ
- Thử thực tế
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