Optical recording materials having high storage density

• Main Authors: SPAHNI, HEINZ, SCHMIDHALTER, BEAT, SUTTER, PETER, LEHMANN, URS, BUDRY, JEAN-LUC
• Format: Patent
• Language: Chinese; English
• Published: 01.04.2004
• Subjects: ADHESIVES; AUXILIARY PROCESSES IN PHOTOGRAPHY; CHEMISTRY; CINEMATOGRAPHY; COLOUR PRINTING; DYES; ELECTROGRAPHY; HOLOGRAPHY; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; LAKES; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; PERFORMING OPERATIONS; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES; PHOTOGRAPHY; PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHYSICS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; TRANSPORTING; TYPEWRITERS

The invention relates to an optical recording medium, comprising a substrate, a reflecting layer and a recording layer based on compounds of formula. Attention is drawn to the description for the precise meanings of the substituents. Recording and playback are carried out especially at a wavelength of from 350 to 500 nm, for example, using a blue laser. The recording and playback quality is excellent and allows high storage density. Likewise claimed are some novel compounds of formulae (I), (II), (III) or (IV), as well as an optical recording medium comprising, in the following arrangement, (a) a supporting material consisting of a reflecting metal or, preferably, of a polymer having a reflecting metallic layer; (b) an optical recording layer; (c) a separating layer consisting of a metallic, crosslinked organometallic or dielectric inorganic substance; and (d) a covering layer.