| 摘要 |
<p>Provided is a sheet printed information obliterating device, comprising information concealing printing unit for printing an information concealing pattern over a surface of a sheet carrying printed information. The information concealing printing unit prints the information concealing pattern over the surface of the sheet carrying the printed information, and thereby renders the printed information unreadable by virtue of the information concealing pattern written over the printed information. Thus, because the resulting processed sheets are not physically shredded, and, in the case of paper sheet, the fibers are not finely severed, the processed sheets can be easily handled without requiring any large space or any substantial efforts for the handling, and the processed sheets can be recycled for better utilization of existing resources. <IMAGE></p> |
