FLUORESCENT SUBSTANCE AND METHOD FOR MANUFACTURING AN OPTICAL DISK BASED ON SAID SUBSTANCE Russian patent published in 2006 - IPC G11B7/24 G11B7/26 

FIELD: technologies for manufacturing optical disks for storing information, in particular, development of fluorescent substance and method for manufacturing WORM-type optical disks based on it.

SUBSTANCE: fluorescent multilayer substance on basis of organic dyers with polymer linking component for optical data storage disks of type WORM with fluorescent reading, in accordance to first variant, has two-layered light-sensitive polymer composition inside a track, formed in transparent film made of refractory polymer. First layer has hard solution of fluorescent dyer. Second layer is a combined solution of light absorbent and fluorescence extinguisher. Polymer linking component belonging to first layer has substantially reduced melting temperature in comparison to polymer linking component belonging to second layer. In accordance to second variant, fluorescent multilayer substance is made sensitive to polarization of laser beam, enough for controlling processes of reading and recording information in a fluorescent WORM disk due to polarization of laser beam. Also provided is method for manufacturing one-layered optical disk of type WORM, basically including forming of a fluorescent layer in two stages. Firstly, lower semi-layer is formed, containing fluorescent dyer, and then - upper semi-layer, containing non-fluorescent dyer, or at the beginning lower semi-layer is formed, containing non-fluorescent dyer, and then - upper semi-layer, containing fluorescent dyer. Non-fluorescent dyer is selected in such a way, that its absorption area mainly coincides with spectral absorption area and/or fluorescence area of fluorescent dyer.

EFFECT: improved efficiency of recording/reproducing systems and information preservation on basis of WORM-type optical disk with fluorescent reading.

3 cl, 2 dwg, 3 ex