REVERSIBLY FLUORESCENCE PRODUCING AND ERASING THERMAL RECORDING MEDIUM

摘要

PURPOSE:To obtain a reversibly fluorescence producing and erasing thermal recording medium which can conduct both the erasure and production of a fluorescence in an invisible region, which cannot be identified by naked eyes, only by controlling a thermal energy. CONSTITUTION:A recording layer containing an organic fluorescent metal complex which erases a fluorescence in an acid range and is thermally stable and a color developing/reducing agent which is acid under a short-time heating and basic under a long-time heating realizes the reversible production and erasure of a fluorescence.