| 摘要 |
PURPOSE:To perform fluorescent recording even if a special fluorescent substance is not used, in a thermal fluorescent recording material wherein an org. fluorescence developing layer, an org. fluorescent thermal layer and a protective layer are successively laminated to a base material, by overlapping the fluorescence exciting wavelength band of the high m.p. org. fluorescence developing layer with the fluorescence wavelength band of the low. m.p. org. fluorescent thermal layer. CONSTITUTION:A thermal fluorescent recording material is constituted in the order of a base material 1, an org. fluorescence developing layer 3, an org. fluorescent thermal layer 4 and a protective layer 5 or the base material, the layer 4, the layer 3 and the layer 5. The org. fluorescent thermal layer 4 is melted by a thermal head and melted into the org. fluorescence developing layer 3 to form a recording image. At the time of the reading of recording, the org. fluorescent thermal layer 4 is irradiated with ultraviolet rays of a fluorescent exciting wavelength band and the org. fluorescence developing layer 3 is secondarily excited by the org. fluorescent thermal layer 4 receiving ultraviolet rays to be excited to develop a recording image by said fluorescence. As a result, fluorescence recording can be performed without using a special fluorescent substance changed thermochemically. |
