| 摘要 |
<p>PURPOSE: To form mail, especially, to simply form one secret mail from one paper. CONSTITUTION: One paper 11 is divided into a cover region 11-1 having a size 1/4 that of the paper 11, the back cover region 11-2 having a size 1/4 that of the paper 11 and continued to the cover region 11-1 along its one side and the inside region 11-3 having a size 1/2 that of the paper 11 and continued to both regions 11-1, 11-2 along its one side. The inside region 11-3 is cut off from the paper or bent to superpose the rear surface of the region 11-3 on the rear surfaces of the cover region 11-1 and the back cover region 11-2 and the continued regions 11-1, 11-2 are bent along with the inside regions 11-3 so that the surfaces of both regions 11-1, 11-2 become outside and three peripheral parts of the cover region 11-1 not continued to the back cover region 11-2 and the superposed parts of the back cover region 11-2 and the inside region 11-3 superposed on three peripheral parts are bound.</p> |
