| 摘要 |
PURPOSE:To form a document impossible to re-copy by forming a resin layer containing transparent fine particles having reflective ability and reflective pigment on a support. CONSTITUTION:A resin layer 2 containing transparent fine particles 3 having reflective ability and reflective pigment 4 is formed on a support 1. Incident light A transmits through the transparent fine particles 3 without being irregularly reflected and reflected by the reflective pigment 4 to become recurrent reflected light B which is, in turn, emitted from the transparent fine particles 3. In this case, since the recurrent reflected light B is emitted in the almost same direction as the incident light A, the greater part of emitted light does not reach a photosensitive body. Therefore, the part thereof is judged to be gray and no difference is generated in contrast between an image part and a non-image part. By this constitution, even when any copier is used, re-copy becomes impossible and a re-copy impossible document can be formed without using special toner. |
