What You Need to Know
The process relies on stable oil‑in‑water or water‑in‑oil emulsions, stabilized by lecithin or xanthan gum, to keep pigments dispersed during high‑pressure jetting. Heating the ink to 60–70 °C or adding sugar increases viscosity to the 1–5 mPa·s range, enabling controlled droplet formation. Upon deposition, rapid solvent evaporation leaves fine pigment particles that dry in seconds, forming crisp, non‑flavoring designs.
The Science
Primary Reaction
Emulsion stabilization and solvent evaporation