| 摘要 |
PROBLEM TO BE SOLVED: To provide a carbonless type copying book which is not complicated in production process, nor increased in cost, and is not color developed at the cutting surface of a final product. SOLUTION: The end parts of the copying book set 2 constituting the copying book 1 are impregnated with a decoloring agent which functions to decolor the color developed by reacting a color developing agent which is flowed out by breaking a micro-capsule to coat the rear surfaces of an upper sheet 21 or an intermediate sheet paper 22, with a developing agent coated on the front surface of the intermediate paper 22 or a lower sheet 23. COPYRIGHT: (C)2005,JPO&NCIPI
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