摘要:
The invention , wherein the recording track comprises a compound of formula (I) or a mesomeric or tautomeric form thereof and are each independently of the other, or ; is or C 2 -C 8 heteroaryl unsubstituted or mono- or poly-substituted by R 47 , R 48 , R 49 and/or R 50 ; Q 1 and Q 6 are each independently of the other O or S; Q 2 and Q 4 are each independently of the other O, S or NR 51 ; Q 3 is N or CR 52 ; Q 5 is N, or is CR 14 when Q 4 is O or S; Q 7 is O, S, CR 22 R 23 or NR 35 ; Q 8 and Q 10 are each independently of the other CR 53 R 54 , O, S or NR 55 ; Q 9 is CR 43 or N; Q 11 is CR 56 or N; Q 12 , Q 14 and Q 16 are each independently of the other CR 57 R 58 , O, S or NR 51 ; Q 13 and Q 15 are each independently of the other CR 59 or N. The structures of the cations and the substituents are defined in the description. The invention also pertains to the use of compounds of the formula (I) in optical recording with a blue laser as well as to optical recording processes wherein pits of either lower or higher reflecticity are written on a track comprising compounds of the formula (I). Hence, the invention finally also relates to an optical recording medium comprising a recording dye which is bathochromic as compared with the laser wavelength, on which medium pits of lower reflectivity are written on a higher reflectivity track.
摘要:
The present invention relates to the use of anionic phthalocyanine based dyes as BCA (Burst Cutting Area) dye in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength from 380 to 650 nm. The invention further relates to an optical data recording medium capable of recording and reproducing information by laser beam irradiation. Particularly, it relates to a heat mode type optical data recording medium, which employs an anionic phthalocyanine based dye in the optical layer.
摘要:
The present invention relates to antipyrine-indandione based azo metal complex dyes and their use in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 nm. The invention further relates to a write only read many (WORM) type optical recording medium capable of recording and reproducing information with radiation of blue laser, which employs an antipyrine-indandione based azo metal complex dye in the optical layer.
摘要:
A high capacity optical information storage medium, e.g., a Blu-ray Disc, possesses a multilayer coating on a surface thereof, the coating comprising: a) a light transmission layer in adherent contact with a surface of the optical information storage medium, the light transmission layer being obtained by curing a first curable composition comprising at least one monomer possessing at least one of acrylate and epoxy functionality; and, b) a hardcoat layer in adherent contact with the light transmission layer, the hardcoat layer being obtained by curing a second curable composition comprising functionalized colloidal silica and at least one monomer possessing at least one of acrylate and epoxy functionality.
摘要:
The present invention relates to cationic antipyrine based azo metal complex dyes for use in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength from 380 to 650 nm. The invention further relates to an optical data recording medium capable of recording and reproducing information by laser beam irradiation. Particularly, it relates to a heat mode type optical data recording medium, which employs a cationic antipyrine based azo metal complex dye in the optical layer.
摘要:
The present invention provides a disc-shaped information medium comprising a printable layer which comprises an undercoat layer and a colorant receiving layer, wherein: the colorant receiving layer comprises microparticles, a binder and a cross-linking agent; a thickness of the colorant receiving layer progressively decreases from an inner circumferential side to an outer circumferential side thereof; and a relationship between a thickness (T in ) at an inner peripheral portion of the colorant receiving layer and a thickness (T out ) at an outer peripheral portion of the colorant receiving layer satisfies the equation of (T in - T out ) ≥ 1 µm. The present invention further provides a method for producing the disc-shaped information medium.
摘要:
Disclosed is a near infrared absorbing compound which does not contain antimony or arsenic and has excellent stability, especially excellent heat resistance, light resistance and wet heat resistance. Also disclosed are a near-infrared absorbing filter, which is produced by using the near infrared absorbing compound and has excellent resistance such as light resistance and heat resistance, an optical filter and an optical recording medium. Specifically disclosed are a diimmonium compound represented by the formula (1) below and a near-infrared absorbing filter obtained by using such a diimmonium compound. Further specifically disclosed are a near-infrared absorbing filter wherein an adhesive layer containing the diimmonium compound is arranged on a transparent supporting body, and an optical filter using such a near-infrared absorbing filter. (1) (In the formula (1), R
摘要:
The invention accordingly relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer, wherein the recording layer comprises a compound of formula (I) or a mesomeric or tautomeric form thereof, wherein M 1 is a metal cation in the oxidation state +3, a hydroxy or halogeno metal group wherein the metal is in the oxidation state +4, or an oxo metal group wherein the metal is in the oxidation state +5; (III) and (IV) are each independently of the other (V), (VI) or (VII); (VIII) is (IX), (X), (XI), (XII), (XIII) or (XIV); (XV) is (XVI) or C 2 - C8 heteroaryl unsubstituted or mono- or poly-substituted by R 10 , R 11 , R 12 and/or R 13 ; Q 1 is N or CR 18 , Q 2 is N or CR 19 , Q 3 , Q 5 and Q 7 are each independently of the other CR 20 R 21, O, S or NR 22 , Q 4 is CR 16 or N and Q 6 is CR 17 or N ; and R 2 and/or R 6 are O, S or NR 33 . Please see the disclosure for the other substituents which are less relevant. The compounds of formula (I) are novel and also claimed, as well as the compound of formula (II), or a mesomer or tautomer thereof, wherein R38 is halogen, CF 3 , NO 2 , CN, COR 22 , COOR 23 , SO 3 R 23 , NCO or SCN, G 1 , G 2 , M 1 , R 1 , R 2 , R 4 , R 5 , R 6 , R 8 , R 22 and R 23 are as defined in formula (I), M 2 m+ is a cation with m positive charges, and m is an integer 1, 2 or 3. The optical recording media are remarkably suitable for DVD±R (658 nm), especially at high recording speeds.
摘要:
The invention relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer comprising a compound of formula (I) or a tautomer thereof, wherein G 1 , G 2 and G 3 are each independently of the other A 1 , A 2 and A 3 are each independently of the other N(R 14 ),O, S or Se and A 4 is C(C 1 -C 5 aIkyl)2, C(C 4 -C 5 alkylene), N(R 14 ), O, S, Se, N=C(R 15 ) or CH=C(R 16 ); M 1 is an at least trivalent metal of groups 3 to 15 most preferred Co(III) or Cr(III); Q 1 , Q 2 and Q 3 are each independently of the other C(R 17 ) , N or P. Recording and playback are effected especially at a wavelength of from 350 to 500 nm, for example using a blue laser.
摘要:
The object of the present invention is to provide an optical recording medium in which a recording material of the optical recording medium has a high solubility in an organic solvent, so that the recording material can be shaped to film by a coating process and the recording material is excellent in light-resistance and stability during the preservation, so that the optical recording medium is applicable to the recordable DVD. For the object, the present invention provides the optical recording medium comprising a substrate and at least a recording medium disposed on the substrate, wherein the recording medium comprises at least one type of formazon-metal chelate dyes.