DUPLICATE THERMAL PRINTER AND ITS PROGRAM

摘要

PROBLEM TO BE SOLVED: To prevent contents printed on a second thermal paper from being distinguished by a first thermal paper by using a duplicate thermal sheet in which a plurality of thermal papers are peelably superimposed on each other.

SOLUTION: A duplicate thermal printer performs printing on the duplicate thermal sheet in which the first thermal paper and the second thermal paper that are colored by the generation of heat are superimposed on each other and to which heat generation energy by the generation of the heat is applied from a direction opposite to the first thermal paper. The duplicate thermal printer includes a gradation setting means changing a printing density. The printing density of a part for printing a hiding area for hiding the printing contents of the second thermal paper to the first thermal paper and the printing density of all parts except the hiding area printed to the first thermal paper are independently set by using the gradation setting means.

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