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How ink selection affects barcode readability

Not all CIJ inks print barcodes equally. This guide helps ensure your codes are scannable and compliant.

Why this matters

Unreadable barcodes = rejected products, chargebacks, or manual rework.

Ink factors that impact barcode quality

Factor Effect
Colour contrast Black on white = best. Avoid dark-on-dark.
Drying time Smudged codes won’t scan
Line speed Can stretch or compress bars
Printhead angle Affects bar sharpness
Dot gain (bleeding) Makes narrow bars unreadable
 

Best practices

  • Use high-contrast black MEK or light pigment ink

  • Reduce print speed slightly for complex codes

  • Test barcodes with a verifier before full run

  • Avoid curved or textured surfaces if possible