This machine applies hot ink roller to print production date, shelf period and other literal labels It can be equipped on horizontal and vertical type continuous antomatic packers, i. E. Pillow type packer, vertical type automatic granule packer, etc. (excluding intermittent type packer). Appling intelligent control system, it is optimized in design. It can be mounted conveniently and safely, and can automatically track the operation speed of packer, realize synchronous print and ensure the precision of print position and the clearness of print letter. It is widely used with automatic packing machineries in the fields of food, pharmacy, chemical industry, etc