Thermal inkjet (TIJ) printers use micro‑heaters to vaporize ink and eject droplets onto substrates. Benefits include high 600‑1200 dpi resolution, minimal maintenance, compact form factor, and wide substrate compatibility. Water‑based inks suit porous materials, while solvent inks work on plastics, glass, and coated films. Proper capping is critical to avoid clogging—yielding reliable printing and longevity.