A light-heat conversion in a light-stimulated writing method and associated apparatus include an image recording body having an element, which absorbs an (electromagnetic wave) provided in a surface of a recording body, or in a recording layer formed on an uppermost layer of the recording body having a material exhibiting a thermal changeable character of wettabilty, or in a substrate or an intermediate layer of the recording body. After a liquid is disposed on the recording body by a liquid forming device, light-stimulated writing is carried out, resulting on an enhanced efficiency of light-heat conversion by a light absorbing element.