| 摘要 |
<p>A latent image printing apparatus for facilitating the input work remarkably by printing latent image patterns of several features being printed together and determined uniquely by simply inputting a commodity code being specified for production work, enhancing the efficiency by decreasing the management operation man-hour of the production line, enhancing the reliability of production, and further enhancing the traceability by printing date information characterized in that an exposing means for printing a latent image indicative of the features of commodity is provided at the side edge part of a long not-yet exposed film avoiding the photographing image region, the exposing means is disposed in an internal machine for cutting the film at a constant length, winding the film and performing a light shielding treatment of the film, the treated and packaged product corresponds to a commodity code encoded as a final commodity unit, and the latent image of the commodity code is printed for the purpose of commodity management and production management by the exposing means.</p> |
