The ink roll coding machine adopts a extraction type font head, and the Ink Roll coding machine has a simple structure, making it convenient and fast to replace the font and ink wheel. Combined with the friction technology, it uses the friction force of the packaging film to drive the printing head to rotate through a special clutch. The coding speed automatically tracks and changes synchronously with the packaging film, ensuring the consistency of the coding position. It is suitable for automatic printing of production date, product batch number and other information marks on various types of pillow type vertical continuous packaging machines.