Reversible heat sensitive recording material

摘要

PCT No. PCT/JP96/00104 Sec. 371 Date Sep. 18, 1996 Sec. 102(e) Date Sep. 18, 1996 PCT Filed Jan. 22, 1996 PCT Pub. No. WO96/22885 PCT Pub. Date Jan. 8, 1996The object of the present invention is to provide a reversible heat sensitive recording material capable of formation and erasion of images with a clear contrast and capable of retaining stable images with time under the conditions of daily living. A reversible heat sensitive recording material comprising a support and, provided thereon, a normally colorless or light colored dye precursor and a reversible color developer which causes reversible change of color tone in the dye precursor due to the difference in cooling rate after heating, characterized in that said reversible heat sensitive recording material contains at least one specific color erasion accelerator containing a long chain alkyl group. Furthermore, a reversible heat sensitive recording material in which the recorded images can be erased by simple methods, such as leaving it in natural environment or at relatively low temperatures or heating it by a drier, characterized in that a specific compound having a long chain alkyl group and an imide group as the reversible color developer and a specific amine compound having a long chain alkyl group or an imide-containing compound as the color erasion accelerator are used in combination.