QR code print refers to the considerations and best practices for reproducing QR codes on physical materials such as paper, packaging, signage, and merchandise. Successful QR code printing requires attention to size, contrast, material, and placement to ensure reliable scanning in real-world conditions.
The minimum recommended print size depends on the scanning distance. For close-range scanning (within arm's reach), a QR code should be at least 2cm x 2cm. For scanning from 1 meter away, the code should be at least 10cm x 10cm. The general rule is that the scanning distance should be no more than 10 times the QR code's width. Print production books on Amazon provide sizing charts.
Contrast is critical for print QR codes. The foreground modules must be significantly darker than the background. While black on white provides the best contrast, dark colors on light backgrounds can work if the contrast ratio exceeds 4:1. Avoid printing QR codes on textured, reflective, or transparent materials that may interfere with scanning.
The quiet zone (the white border around the QR code) must be at least four modules wide. This border helps scanners distinguish the QR code from surrounding graphics. Cropping or reducing the quiet zone is a common printing mistake that causes scanning failures. Packaging design books on Amazon discuss placement strategies.