| 摘要 |
PURPOSE:To suppress the generation of noises by the irregular reflection of laser light without degrading appearance by sticking two sheet of one-face disk formed with colored layers having low light transmittance on protective layers to each other by interposing an adhesive agent layer therebetween. CONSTITUTION:After an information recording film 1 is formed by sputtering on the disk substrate 2 and a protective film 3 for the information recording part is formed thereon by spin coating using a UV curing type resin and UV irradiation. For example, a carbon black-contg. thermosetting resin is then coated on the protective film 3 for the information recording part and is cured to form the colored film 4 and a hot melt type adhesive agent is coated as the adhesive layer 5 thereon. Two sheets of such one-face disks are press-welded and stuck to each other in such a manner that the adhesive agent layer 5 come into contact with each other. The degradation in the appearance is thereby prevented and the increase of the noises by the irregular reflection of the laser light is prevented. |
