DL DVD+R Double / Dual Layer Disc

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DVD+R Double Layer DL Inkjet Printable Disc

DVD+R Double Layer DL Thermal Printable Disc

DVD+R Double Layer DL Disc

Mini DVD+R DL - Suitable for Camcorders

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The double-layer DVD+R system uses two thin embedded organic dye films for data storage separated by a spacer layer (see figure). Heating with a focused laser beam irreversibly modifies the physical and chemical structure of each layer such that the modified areas have different optical properties to those of their unmodified surroundings. This causes a variation in reflectivity as the disc rotates to provide a read-out signal as with commercially pressed read-only discs.