A transmission heat-development photosensitive material having an exposure wavelength of 750 nm or shorter having a property that an adsorbance of the material with respect to an exposing wavelength before an exposure and development process is 0.5 or smaller and a highest density of 2.8 can be realized with energy which is not larger than 7 times (in a case of a negative-type material) exposing energy required to realize a density of 1.2 or not smaller than {fraction (1/7)} (in a case of a positive-type material) of the exposing energy.