| 摘要 |
<p>An authenticity discriminating printed matter which is apparently imitable, and comprises a combination of a magnetic material having a reflecting characteristic in an IR region unlike a general magnetic and a general magnetic material having an absorbing characteristic in an IR region; and a method of discriminating the authenticity of such an authenticity discriminating printed matter. At least part of a pattern contains at least two print images, with a normal black magnetic material having an absorbing characteristic in an IR region used in one prit image and a white magnetic material having a reflecting characteristic in an IR region used in the other print image. At least either of reflectances and magnetic intensities in respective IR portions in two print images are relatively made different from each other by changing the amounts of respective magnetic materials to thereby making difficult the imitation and alteration of the pattern.</p> |
