THERMAL DISTRIBUTION DISPLAY

摘要

Provided is a thermal distribution display including, on a support, a thermal distribution display layer that includes at least two electron-donating dye precursors that develop mutually different color tones, the dye precursors including at least one electron-donating dye precursor that decomposes in a temperature range of 190° C. or higher to undergo a change in hue; at least one electron-accepting compound that allows the at least two electron-donating dye precursors to develop colors; and a binder, wherein, in the thermal distribution display layer, a temperature T0.2, at which a density is 0.2 greater than a background density, satisfies the following formula (1).;0.2T0.2-Tmin≤0.02Formula(1)

主权项

1. A thermal distribution display comprising, on a support, a thermal distribution display layer that comprises: at least two electron-donating dye precursors that develop mutually different color tones, the dye precursors including at least one electron-donating dye precursor that decomposes in a temperature range of 190° C. or higher to undergo a change in hue; at least one electron-accepting compound that allows the at least two electron-donating dye precursors to develop colors; and a binder, wherein, in the thermal distribution display layer, a temperature T0.2, at which a density is 0.2 greater than a background density, satisfies the following formula (1):0.2T0.2-Tmin≤0.02Formula(1) wherein, in formula (1), T0.2 represents a temperature [° C.] at which the density is 0.2 greater than a background density (Dmin); and Tmin represents a color development initiation temperature [° C.].