PURPOSE: To obtain a printed matter that can prevent the characters written or the seals put on the base surface of the printed matter or on the printed surface from being made illegible or rubbed out due to press contact or rubbing with hands or the like.

CONSTITUTION: The base material having hydrophobic surfaces such as coated paper 2 or synthetic resin sheet is printed on its surface and the printed surface is irradiated with laser beams on the prescribed areas 7 to scrape off a depth from a few microns to several tens microns to form the modified surface area 8 whereby the sealing area 9 or writing area 9' is provided. Shaving with laser beams increases the surface area of the base surface and the stamp ink or water-born ink rapidly penetrates into the surface layer to promote penetration and drying of these inks whereby the setting properties of the written characters or the seal marks are improved.