CD MaterialsCommercial CDsSlide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10CD-RsSlide 12CDRsSlide 14CD MaterialsBy BillCommercial CDs•Materials/Process:–Injection molded PC imprinted with bumps by master stamp.–Aluminum is sputtered over bumps–Protective acrylic layers sprayed over top–Label painted on top of acrylic.Commercial CDswww.cdman.comwww.cd-info.comCommercial CDs•Mastering: process of creating a stamper to be used in the injection molding stage of manufacturing compact discs. –A laser etches the digital pattern onto a highly polished glass disc coated with photoresist –"glass master" is then cured (developed) with ultraviolet light and rinsed off –A metal mold is electroformed–The mold is removed and electroplated with nickel to be used as the stamper.Commercial CDs•Glass masteringwww.cdman.comCommercial CDs•10XCommercial CDs•50XCommercial CDs•75XCommercial CDs•100XCommercial CDs•50x: No trackCD-Rs•Materials/Process:–Organic dye between the PC substrate and the reflective layer–PC substrate has is etched with a pregroovewww.cdmediaworld.comCD-Rs•Materials/Process:–Dyes and colorDye Material Refl: Au Refl: Ag QualityCyanine Green Green/blue CheapestPhthaloCyanine Gold - HighestMetallized Azo - Dark blue ?Advanced PhthaloCyanine Gold -Formazan Green/gold -CDRs•10X: