Yes, provided you use food-grade ink formulated for eggshells. Egg shells have micro-pores, so ordinary industrial ink could migrate inward and contaminate the egg. Food-grade ink is designed to stay on the surface and be non-toxic.
Look for inks that meet FDA (USA) and EU/EFSA food-contact standards, are fast-drying (a matter of seconds), and resist smudging during transport and refrigeration. Reputable suppliers provide certification reports with each batch.
Never substitute general industrial ink. Always use the ink recommended by your printer manufacturer and keep it away from eyes and mouth when changing cartridges.
Why SHICAI: Every SHICAI printer — including the Small Character Egg Printer — uses ink designed to sit on the shell surface rather than soak in, with documentation available per batch.
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SHICAI supplies food-grade egg coding machines to poultry farms and packers across the US, UK, EU, Australia and worldwide. Every unit ships with food-grade ink documentation and 24-hour engineering support.
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