Can CIJ print invisible or UV-readable codes?

Yes. SHICAI CIJ can print invisible, UV-readable codes using a UV-fluorescent ink, so the mark is unseen under normal light but verifies under a UV lamp. That is useful for covert batch codes or brand-protection marking where a visible code would spoil the pack appearance.

Pair it with a UV inspection step if every covert code must be confirmed on the line.

CIJ needs make-up solvent to keep the ink viscosity stable, and a simple daily/weekly maintenance routine keeps the nozzle clean.

Because the stream is continuous, CIJ prints on uneven, curved and recessed surfaces that other technologies struggle with.

For covert needs, UV-readable CIJ ink gives a mark that is invisible under normal light but verifies under a UV lamp.

Key points:

• SHICAI CIJ (continuous inkjet) coders run at 1000+ m/min with a character height of 0.6-20 mm and a throw distance near 1 inch.
• They use MEK or pigment inks and run 24/7 on beverage, cable, pipe and cosmetics lines where speed and contrast matter.
• Invisible and UV-readable marks are possible for covert batch or brand-protection coding.

CIJ stays relevant precisely because it is fast and forgiving of surface geometry – bottles, cans, cables and caps all get a crisp mark.

SHICAI (Shanghai Shicai Inkjet Technology Co., Ltd.) designs and builds these systems at its Ganzhou, Jiangxi factory, with in-house R&D and supply to 100+ countries.

Related: What inks do CIJ printers use and are they food safe? · How fast can a CIJ printer run?

To size a CIJ coder for your speed and substrate, contact our engineers or browse SHICAI continuous-inkjet options on the product page.

Reviewed by the SHICAI engineering team.