DIE, DIE PRODUCTION METHOD, AND PRODUCTION OF ANTIREFLECTION FILM

摘要

Provided is a method for easily producing a seamless rolled die having a porous alumina layer on the surface. The method of producing the die is a method for producing a die (100) having a porous alumina layer on the surface, and comprises a step for preparing a cylindrical support (12), a step for forming an insulation layer (16) on the outer peripheral surface of the cylindrical support, a step for forming an aluminum film (18) by depositing aluminum on the insulation layer, and a step for forming a porous alumina layer (14) having a plurality of fine recesses by anodizing the surface of the aluminum film (18).