Patent ID: 8598074

Claim:
A thermosensitive recording medium comprising: a support; an image recording layer on the support; and an inorganic material in particle form as a light-heat conversion material, wherein the inorganic material has a ratio of Y to X, represented by Y/X, of 2 or greater, where X denotes an average value of absorption intensities with respect to light having wavelengths in the range of 400 nm to 700 nm, and Y denotes a maximum value among absorption intensities with respect to light having wavelengths greater than 700 nm but smaller than or equal to 1,200 nm, wherein the image recording layer comprises the light-heat conversion material or the light-heat conversion material is a separate layer attached to the image recording layer, wherein the light-heat conversion material is at least one selected from the group consisting of a hexaboride, a tungsten oxide compound and zinc antimonite and wherein the image recording layer comprises a leuco dye and a reversible developer.