| 摘要 |
A book having security papers is provided to prevent a person from illegally taking the books as the person is not able to distinguish between the general book and the book having security papers and to cut down the manufacturing cost due to a simple structure. A book has security papers(10) used as at least one page. The security paper is composed of at least one metal thin film(100) capable of being recognized by at least one of metal detection and X-ray search, and a sheet(200) attached to cover both surfaces or the entire outer surface of the metal thin film. At least one of covers or inner pages is the security paper. The metal thin film is made of materials recognizable by X-ray search and provided with at least one through-hole. |
