125 u00b0 250 u00b0 c p toluenesulfonylhydrazine 90 u00b0 95 u00b0 c p p 39 oxybis benzenesulfonylhydrazine 120 u00b0 140 u00b0 c 3 3 39 disulfonylhydrazinediphenylsulfone 145 u00b0 155 u00b0 c azobisisobutylonitrile 100 u00b0 115 u00b0 c azodicarbonamide 125 u00b0 200 u00b0 c all types of known photosensitive resins may be used for the photosensitive composition which forms the photosensitive printing plate according to this invention for instance there may be used negative photosensitive resins such as polyvinyl cinnamate shown in japanese patent publication no 1492 63 its derivatives shown in u s pat no 2 725 372 partially saponified polyvinyl acetate such as p azidobenzoate and polyazidostyrene shown in british pat no 843 541 and u s pat no 3 096 311 diazo resin and acryl copolymer shown in japanese patent laid open no 30604 75 diazo resin and shellac mixture shown in japanese patent publication no 25841 75 and condensates of diethyl p phenylene diacrylate and 1 4 di u03b2 hydroxyethylcyclohexane shown in u s pat nos 3 030 208 3 622 320 and 3 453 237 it is also possible to use a positive photosensitive resin such as for example o naphtho quinonediazide shown in u s pat no 3 046 120 and japanese patent publication no 24361 74 the photosensitive composition forming the photosensitive layer of the photosensitive printing plate according to this invention contains a photosensitive resin and an organic foamable compound in order to properly roughen.