| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a print system for concealed print, which uses a color coupler or an inhibitor in a printing unit of a computer printer to conceal and express characters, figures, symbols, and patterns. <P>SOLUTION: The print system comprises an input device, a controller, and an ink printer having an ink unit for concealed print using at least the color coupler, the inhibitor, or the like and is provided with a print control means which prints concealed information of characters, figures, symbols, patterns, etc. by concealed print which is not visible when printed and develops colors in response to depression. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
