| 摘要 |
PROBLEM TO BE SOLVED: To realize the easy confirmation of the absence and presence of a falsification in an antifalsifying pressure sensitive reproducing sheet employing together with a back carbon. SOLUTION: A transfer sheet 2 and an accepting sheet 3 are piled up together. At the important positions in the opposing surface of a transfer sheet 2, a mixing layer 5 produced by mixing coloring agent microcapsules including a first coloring agent developing color different from the color developed in a back carbon ink described later and a developer is provided. Further, a back carbon ink layer 6 is provided in the accepting sheet side of the mixing layer 5. In the predetermined region opposing at least to the back carbon ink layer in the opposing surface of the accepting sheet, a coloring agent microcapsule layer 7 including a second coloring agent developing color different from the color developed in the back carbon ink is provided. |
