| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermosensitive sheet capable of surely concealing confidential information while the production process is simplified to suppress the production cost. <P>SOLUTION: The thermosensitive sheet includes a carbon layer 6 between a thermosensitive recording paper 5 having transparency and a transfer paper 3, wherein the thermosensitive recording paper 5 includes a thermosensitive coloring layer 5b on a surface opposed to the transfer paper 3, and thermally transferring carbon is melted and applied on an area to be concealed of the thermosensitive coloring layer 5b to form the carbon layer 6, and the temperature to melt and apply the thermally transferring carbon is made higher than the coloring temperature of the thermosensitive coloring layer 5b. As a result, the thermosensitive coloring layer 5b corresponding to the area to be concealed becomes an existing coloring part 5c and the information to be printed on the area is made invisible from the outside. <P>COPYRIGHT: (C)2010,JPO&INPIT |
