| 摘要 |
<p>An information recorded medium (10) comprising a base (2a), a resin layer (2) provided on the base (2a), a hologram region (6) comprising a diffraction grating (4) provided regularly or irregularly on the resin layer (2), and a ferromagnetic thin film layer (3) formed on the hologram layer (6) and holding as management information for forgery prevention a magnetic characteristic which corresponds to the hologram pattern of the hologram region (6) and can be read as a signal pattern corresponding to the hologram pattern.</p> |
