THe positive-working photosensitive composition as claimed in claim 1 wherein the alkali-soluble dye as the component (D) is an azo compound having at least one phenolic hydroxy group in a molecule selected from the compounds represented by one of the general formulas ##STR7## in which R5 is a hydrogen atom or a hydroxy group and R6 is a hydrogen atom or a hydroxy group and R6 is a hydrogen atom,