AMINOARYL-1,3-OXAZINE-2,4-DIONE

摘要

PURPOSE:To decrease the thermal damage to a layer proximate to a recording film by a small flash irradiation power and to easily obtain a crystallized film by subjecting the recording film to the flash irradiation in a preheated state. CONSTITUTION:A disk 6 is constituted by forming the recording film consisting of an Sb-Se-Bi system on an injection-molded substrate and forming an org. protective film on this film. The disk 6 is held static between a preheating incandescent lamp 1 and a flash radiating xenon lamp 5 and is subjected to preheating. The disk is then crystallized by executing the flash irradiation simultaneously with the end of the preheating. As a result, the camber of the substrate is obviated and the adhesion between the protective film and recording film of the disk 6 is not deteriorated.