A method for manufacturing an ink-containable stamp used for a printer of a computer or the like is disclosed, wherein a number of printing types and a drum or plate are moulded from a mixture comprising synthetic resin consisting of polyvinyl acetate resin and polyolefin resin, fillers, stabilizers, plasticizers and pigments, irradiated with gamma-rays, immersed in an enzymatic solution and then in an acid solution. The type and drum or plate are then assembled to form a printing element.