Reversible thermosensitive recording material and method of use thereof

摘要

A reversible thermosensitive recording material which has a substrate and a recording layer formed on the substrate and in which the recording layer assumes a first color state at a first coloring temperature higher than room temperature when the recording layer is heated by applying heat energy in a first color recordable energy range and in which the recording layer then assumes a second color state when heated at a second coloring temperature higher than the first coloring temperature and then cooled, wherein provided that an initial first color recordable energy range is E1 and a changed first color recordable energy range of the recording material which has been preserved at 35 DEG C. for 48 hours is ED, a changing rate Ec of a first color recordable energy range, i.e., 100(E1-ED)/E1, is less than about 35%.