TW201022864A - Film for gap layer of hologram recording medium and hologram recording medium - Google Patents

Abstract

A film for a gap layer of a hologram recording medium, which prevents noise generation during hologram recording/reproduction caused by a leak of information light and reference light from a filter layer. A hologram recording medium using the gap layer. The film for a gap layer of a hologram recording medium is formed from a resin composition containing 100 parts by weight of a polycarbonate resin and 0.01-1.5 parts by weight of an anthraquinone dye and/or a quinoline dye. The hologram recording medium uses the film.

Description

[Technical Field] The present invention relates to a film for a gap layer and a hologram recording medium of a hologram recording medium. Background of the Invention A hologram recording medium capable of three-dimensional information recording is an optical recording technology capable of realizing large-capacity and high-speed transmission as compared with a magneto-optical recording medium or a phase-change optical recording medium. The holographic recording and reproducing method is to illuminate the information light and the reference light to which the information is given and to interfere with the two-dimensional image, and to generate an optical characteristic distribution such as a refractive index inside the recording layer by using the formed interference image to record information. The reproduction is performed by irradiating only the reference light and correspondingly recording the interference image by irradiating the reproduction light having the optical characteristic distribution from the recording layer. In addition to the radical polymerizable compound and the photoradical polymerization initiator, the recording layer of the hologram recording medium generally has a three-dimensional crosslinked polymer matrix structure (for example, Patent Document 1). The three-dimensional crosslinked polymer matrix has an effect of suppressing excessive movement of the free radical polymer, and suppressing the function corresponding to the position of the bright region and the volume change corresponding to the position of the dark region in the recording layer. The material of the three-dimensional crosslinked polymer matrix may, for example, be an epoxide, a reaction cured product derived from a cationically polymerizable monomer, or the like (see, for example, Patent Document 2). Further, although various studies have been made on the structure of the hologram recording medium, the hologram recording medium shown in Fig. 1 has been proposed (for example, Patent Documents 3 to 5). 201022864 A servo dimple pattern (servo) is provided on the surface of the two substrates 1 constituting the body.

The gap layer 3 is formed for the purpose. Then, on the twilight layer 4

Japanese Laid-Open Patent Publication No. H07-161137 (Patent Document 3) Japanese Laid-Open Patent Publication No. Hei. No. Hei. SUMMARY OF THE INVENTION SUMMARY OF THE INVENTION An object of the present invention is to provide a light leakage for a light source and a reference light generated from a filter layer, A gap preventing holographic recording medium in which noise is generated during holographic recording and reproduction, and a hologram recording medium using the film. In order to achieve the above object, the inventors have conducted intensive studies on the gap layer of the holographic recording medium and the hologram recording medium. As a result, the light absorbing layer and the gap layer described in Patent Document 3 are not separately produced (the first gap layer is described in Patent Document 3, 201022864). The gap layer itself has light absorbing energy, and the thickness uniformity is maintained and lowered. The birefringence of the gap layer. It is found to be excellent as a film formed of a resin composition containing 100 parts by weight of a polycarbonate resin and a quinone dye and/or a quinoline dye of 0·01 to 1.5 parts by weight as a film satisfying these requirements. That is, a laser having a wavelength of 532 nm' or a wavelength of 4 〇 5 nm or a laser having a wavelength of 65 〇 mn for reading the holographic recording position information can be used as a light source for hologram recording and reproduction. It is found that the gap layer for preventing noise generated by leakage of information light and reference light during holographic reproduction satisfies the spectral light transmittance of 85% or more at a wavelength of 650 nm and at a wavelength of 405 nm. The transmittance is 15% or less, or the spectral light transmittance at a wavelength of 65 〇 nm is 85% or more, and the spectral light transmittance at a wavelength of 532 nm is 15% or less, thereby preventing noise generated by light leakage. Therefore, the polycarbonate resin contains an anthraquinone dye and/or a quinoline dye as a color material that absorbs light having a wavelength of 405 nm or a wavelength of 532 nm and transmits light having a wavelength of 65 nm, by a melt film formation method or a solution system. A film for a gap layer is produced by a film method (molding method). In other words, it has been found that a film made of a polycarbonate resin containing the above dye has a light absorbing energy for a wavelength of a characteristic, a thickness unevenness, a small birefringence, and a holographic recording medium which generates less noise for light leakage from the filter layer. The gap layer is useful for the film to complete the present invention. That is, according to the present invention, there is provided a film for a gap layer of a hologram recording medium comprising 100 parts by weight of a polycarbonate resin and an anthraquinone dye and/or a quinoline dye 〇〇1 to 1.5. The resin composition of the weight fraction is formed. 2. The film according to the first aspect, which has a spectral light transmittance of 5,020,864 at a wavelength of 650 nm of 85% or more and a light transmittance of 15% or less at a wavelength of 532 nm. 3. A film recorded as in the first item, which has a spectral light transmittance of 85/° or more at a wavelength of 65 〇 nm and a spectral light transmittance of 15% or less at a wavelength of 405 nm. The film according to any one of the items 1 to 3, wherein the film has a thickness of 5 to 200 μm and a thickness unevenness of ± 5% or less. 5. The film according to any one of the items 1 to 4, wherein the film has an in-plane hysteresis of 2 〇 nm or less and a hysteresis in the thickness direction of 6 〇 nm or less. A method of applying the film according to the first item to a gap layer of a hologram recording medium. The holographic image is composed of a second substrate, a reflective layer, a gap layer, a filter layer, a protective layer, a recording layer and a light transmissive first plate constituting the support to constitute information light and information that can be imparted with information. a reference image in which the reference light interfered with the information light is superimposed into a two-dimensional image, and the holographic recording medium is recorded by using the holographic technique, characterized in that the gap layer is composed of a polycarbonate resin containing 1 gram of weight and an onion dye and / or a resin composition of the dye 〇 Gl 15 15 parts by weight. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows an overview of a holographic recording medium and its grading and reference light used in a coaxial manner.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail. 201022864 (film for gap layer) The film for a gap layer of the present invention is formed of a composition containing a weight of a poly(carbonate), an enamel dye, and/or a drip dye. 1.5 parts by weight of the tree (polycarbonate resin) The polycarbonate resin is obtained by reacting a bishydroxy component with a carbonate precursor by an interfacial polymerization method or a smelting polymerization method.

Representative examples of the di-based component include 2,2-bis(4)-phenylphenyl)propane (commonly known as double age), 2,2·double-painted 3·methyl)phenyl}propane, 2,2 _ bis (4_ phenyl) butadiene, 2,2-bis(4-cyanophenyl)_3_methylbutan, 2,2_bis(4_#ylphenyl)-3,3·— Methyl butadiene, 2,2 double (4_ thiophenyl) _4_methyl oxime, U-bis(4-phenylphenyl)cyclohexyl, la. bis (4 carbyl) Phenyl group) cyclohexene, 1,1-bis(4-p-phenylene)_3,3,5-trimethylcyclohexene, 9,9-bis{(4-hydroxy-3-methyl)benzene Base 薙 and α,α,-bis(hydroxyphenyl)m diisopropylbenzene and the like. The binary benzene may be used alone or in combination of two or more. Among them, it is preferable to contain at least 5% of bisphenol A50, preferably at least 6 〇 mol%, and at least 75 mol. /. More preferably, the polycarbonate resin obtained from at least 9 mole % of the bishydroxy component is preferred. As the carbonate precursor, a carbamate compound, a carbonate or a haloformate or the like can be used. Specifically, a dioxoformate of phosgene, diphenyl carbonate or dihydric phenol can be cited. Wait. When a polycarbonate resin is produced by reacting a dihydric phenol with a carbonate precursor by an interfacial polymerization method or a melt polymerization method, a catalyst, a terminal stopper, an antioxidant of a dihydric phenol or the like may be used as needed. In addition, the polycarbonate resin can be used as a branched form in the form of a copolymerization of a plurality of energy aromatic compounds in the form of a nano-sized carbonic acid compound, or a carbonic acid (tetra) ester formed from a (four) combination of a group or a secret group. The material may be a mixture of two or more kinds of polycarbons obtained by mixing. (Viscosity average molecular weight) The point average molecular weight (10) of the polycarbonate resin is preferably ΐ 3χΐ〇4 to 5 sides. In the present invention, the average molecular weight (10) of #度 means that 0.7g of the resin composition is dissolved in the specific viscosity of the thief under the dioxin, and then calculated by the following formula. Nsp/c=[r|]+〇.45x[T]]2e [η]=1.23χ1〇·4Μ0·83 Ήβρ: specific viscosity η: ultimate viscosity c: constant (=0.7) Μ: viscosity average molecular weight (glass Transfer temperature) The break-through transfer temperature of the polycarbonate resin is 120 to 180. The range of 〇 is 130 170. The range is better. If the glass transition temperature is less than 120 ° C, the substrate is easily shaped, and the position of the interference fringe during the hologram recording is shifted, and New Zealand is not suitable. However, if the glass transition temperature exceeds im: it is not suitable because the fluidity is changed to open during the molding step such as injection molding. The glass transition temperature in the present invention is obtained by using a non-difference sweep thermal analysis device (DSC), which is obtained by measuring the temperature rise rate 2 (TC/min according to JIS K7121. 201022864 (dye) mixed with polycarbonate resin Among the dyes, an anthraquinone dye and/or a quinoline dye can be used from the viewpoint of absorbing light having a wavelength of 405 nm or 532 nm and transmitting light having a wavelength of 650 nm.

Specific examples of known brewing dyes are CI·Solvent Red 52 (3-methyl-6-(p-toluidino)-3H-dibenz[F,ij]isoquinoline-2,7-di one) ' CI Solvent Red 149 (6-(cyclohexylamino)-3-N-methylanthrapyridone) ' CI Solvent Red 135 (8,9,10,11-tetrachloro-12H-phthaloperin-12-one), CI Solvent Red 168 (l-anilinoanthra-9, 10-quinone) 'CISolvent Red 207 (1.5-dicyclohexylamino anthraquinone), especially CI Solvent Red 207. The quinoline dyes include CI Solvent Yellow 33 (2-(2-quinolinyl)-lH-indene-l, 3(2H)-dione) ' CI Solvent Yellowl 57 (4,5,6,7-tetrachloro-2-( 2-quinolyl)-l,3-indandi-one) ' CI Disperse Yellow 54 (2-(3-hydroxy-2-quinolinyl)-1,3-indandione) ' CI Disperse Yellow 160 (3-(5-chloro- 2-benzoxazolyl)-7-(diethylamino)-2H-1 -benzopyran-2-one). The blending amount of the dye with respect to 100 parts by weight of the polycarbonate resin is 0.01 to 1.5 parts by weight, preferably 〇. 〇 3 to 1.0 by weight, preferably 〇. 〇 5 to 0.5 by weight. If it is less than 0.01 part by weight, there is almost no light absorbing energy, and it is not suitable because it is impossible to prevent noise generated by leakage of information light and reference light during holographic recording and reproduction. On the other hand, if it is more than 1.5 parts by weight, the transmittance of the spectral light having a wavelength of 650 nm is lowered, and the recording position information in the hologram cannot be read, and 9 201022864 is not suitable. - (Method of mixing dyes) The method for producing a polycarbonate resin composition used in the present invention may be carried out by any method. For example, a method in which a dye is mixed in a molten polycarbonate resin, and a solvent is removed, and then melted and granulated by a ventilating extruder, using a south speed flow type mixing and kneading machine, a tumbler, a nota mixing A method in which a polycarbonate resin and a dye are powder-mixed by a Nauta mixer or the like, and the powder is granulated by a biaxial extruder. Further, additives such as a stabilizer, an antioxidant, a photostabilizer, a coloring agent, a lubricant, a releasing agent, and the like may be added as needed. In the extrusion step (granulation step) of producing a granular polycarbonate, the resin is preferably removed by a sintered metal filter or the like in a molten state. The transitioner is suitable for use with a precision of ΙΟμιη. It is preferred to use any of the methods to minimize the content of foreign matter, impurities, solvents, and the like of the raw material resin before film formation. (Method for Producing Film) A method for producing a film for a gap layer from a polycarbonate resin composition will be described. The film can be produced by, for example, a melt extrusion method, a solution flow method (casting method), or the like. (Melt extrusion method) A specific method of the melt extrusion method can use, for example, a polycarbonate resin and quantitatively supply the product into an extruder, and after heating and melting, the molten resin is extruded from the front end of the mold to the mirror surface. The roll was formed into a sheet shape, which was removed by cooling with a plurality of rolls, and cut into a suitable size or curl at the curing time. (Solution flow method) 10 201022864 The specific method of the solution flow method can be carried out from a τ-type mold to a mirror-polished method using, for example, a solution in which a polycarbonate resin composition is dissolved in di-methane (concentration: 5% to 4% by weight). On the plate, the film is peeled off while passing through an oven that controls the temperature in stages, and the solvent is removed to cool the crimp. (Thickness of Thickness and Thickness of Film) When used as a gap layer of a hologram recording medium, it is preferable to have a thickness of 5 to 2 〇〇 11 in order to prevent the composite δ recording performance from deteriorating. On the other hand, if it is less than 5 pm, the servo signal light is mixed with the hologram signal light, and the S/N ratio of the hologram signal light is lowered, so that the frequency error is increased and it is not suitable. In addition, if it is larger than 200 μm, the total thickness of the optical disc increases the weight of the optical disc. The thickness is preferably 10 to 150 μm, and 20 to ΙΟΟμιη is preferred. In addition, the smaller the thickness unevenness, the better. The thickness unevenness varies depending on the thickness of the film. </ RTI> The thickness unevenness is in the range of ±5 〇/ with respect to the thickness. The following is better, ±3°/. Preferably, the following is preferably ±1% or less. Here, 5% means that the difference between the maximum value and the minimum value of the thickness of the film having a thickness of ΙΟΟμη is 5 μm. If the thickness unevenness is more than ± 5%, it will not be suitable due to the damage of surface smoothness. The method for measuring the thickness unevenness of the full-film film can be measured using, for example, a continuous thickness meter (KG601 Α type film continuous thickness gauge manufactured by Anritsu Corporation). In the case of the melt extrusion method, when the molten polycarbonate resin is extruded from the T-die, the resin film extruded from the lip is contracted or tempered by the air gap portion (the space between the die tip and the cooling roller). The influence of turbulent air and the like is liable to cause thickness unevenness. The distance between the front end of the lip and the chill roll is sufficiently narrow to cause the spatial fluctuation of the molten resin to disappear, thereby reducing the thickness unevenness. 11 201022864 That is, it is preferable to set the distance between the tip end portion of the lip of the τ-type mold and the surface of the cooling roll (mold gap) to be in the range of 10 to 30 mm, preferably in the range of 15 to 3 mm. (Spectral light transmittance of film) The spectral light transmittance of light at a wavelength of 405 nm or a wavelength of 532 nm is preferably 15% or less, more preferably less. Further, the spectral light transmittance of the wavelength (four) nm light is preferably 85% or more, and more preferably 9% by mass or more. If the transmittance of the spectroscopic light having a wavelength of 405 nm or a wavelength of 532 nm is more than 15%, it is unsuitable because noise is generated by light leakage. Further, if the spectral transmittance of the light having a wavelength of 65 〇 nm is less than 85%, the reading of the position information becomes difficult, and Ο is suitable. (In-plane retardation of optical film) The film for a gap layer of the present invention is also characterized by high optical isotropicity, and the in-plane retardation (Re) of the film expressed by the product of thickness and birefringence is used in the laser wavelength to be used. It is preferably 20 nm or less, more preferably i 〇 nm or less, more preferably 8 nm or less, and particularly preferably 5 nm or less. This value is not limited and close to zero is ideal. In-plane hysteresis If it exceeds 20 nm, the S/N ratio is not suitable because the regenerative signal level of the servo signal is unstable.测定 The measurement method of the in-plane hysteresis value (Re) was carried out by measuring the full width of the sample in the width direction by a hysteresis continuous measuring instrument (trade name KOBRA_WFD, manufactured by Oji Scientific Instruments Co., Ltd.). The wavelength of the light source was measured to be 589 nm. In order to reduce Re, it is preferable to adopt a method of passing it through a heat treatment apparatus which adjusts the hot air to a desired temperature while conveying the film. By performing this step, Re can be reduced and the Re in the film surface can be made uniform. When the glass transition temperature of the polycarbonate resin is set to TS, it is preferable to adjust the heat treatment temperature to (Tg - 10) ° C to Tg ° C in the range of 12 201022864 '(丁(四)穴〜(Tg-machine range is preferable). For example, in the polycarbonate resin in the form of repeating phenol A, it is 137 to 147. 〇 is - (hysteresis in the film thickness direction)

In addition to the above characteristics, the film for a gap layer of the present invention preferably has a hysteresis value (Rth) in the film thickness direction of 60 nm or less, preferably 5 Å, and more preferably 45 nm or less. If the hysteresis in the thickness * direction exceeds 6 sputum, the noise of the sputum signal is not suitable. U ❹

The method of measuring Rth, for example, sampling a full width, is equally divided into 5 in the width direction of the film. A sample piece for measurement was cut out from the sample of the aliquot, and the automatic birefringence measuring device (trade name, manufactured by Oji Scientific Instruments Co., Ltd.) was used for riding. The rotation of the shaft or the quick bribe is changed. The hysteresis is measured after changing the angle of incidence. The refractive index ~ is calculated from these data. And ηζ. Further calculated by these values y

Rth[nm]={(nx+ny)/2-nz}xd is obtained. Here, the symbol d indicates the thickness of the film to be measured ((10)). In order to reduce J Rth and adopt a method of heat-treating the apparatus as described above, the method of smashing the above-mentioned film to the hologram recording medium gap layer is as follows: The present invention comprises 100 parts by weight of a polycarbonate-containing resin and a lean dye: Or the dye of the dye system (10) to h5, the total weight of the tree is 2%, and the film for the gap layer of the recording medium is applied to the gap layer of the hologram recording medium. <Full-image recording medium> _ The gross image recording medium of the present Maoming is shown in the figure as the first earth plate 1 reflective layer 2, the gap layer 3, the filter layer 4, the protective layer 5, and the record 13 201022864 The layer 6 and the first substrate 7 constitute 'the optical recording impurities such that the first substrate has an antireflection layer or the like as needed. Moreover, the error correction system can be applied to the coaxial interference between the two optical axes and the _« before the illumination and the reference light (coaxial mode). (First substrate) The second substrate is located at the outermost layer, and forms information relating to the irradiation position of the information light and the reference light for recording the hologram recording medium, and has a reading substrate as a mechanical strength for holding the hologram recording medium. Function.

The second substrate can be appropriately selected as needed for its shape, configuration, size, and the like. Examples are discs, sheets, and the like. It is also preferable to have the same shape as the outer shape of the first substrate. The material constituting the second substrate is usually glass, ceramic, plastic, etc., but it is most suitable for use in terms of workability and cost.

The plastic may, for example, be a polycarbonate resin, an acrylic resin, an epoxy resin, an epoxy resin, a polyphenylene resin, a polyarylene resin, or a polystyrene resin. Acrylonitrile styrene copolymer, polylactic acid resin, polyethylene resin, polypropylene resin, fluorine resin, ABS resin, polyurethane resin, and the like. Among them, polycarbonate resins are most suitable from the viewpoints of moldability, heat resistance, optical properties, and cost. The information relating to the irradiation position of the information light or the reference light in the second substrate is not particularly limited, and may be appropriately selected as needed. For example, tracking information, focusing information, address information, and disc condition information may be mentioned. The aforementioned tracking information may be, for example, a dither pit, a dither groove, a tracking pit, or the like. The focus information may be, for example, a reflection film formed on the surface of the second substrate, a face mirror 14 201022864, a pit for focusing, and the like. The address information may be, for example, irregularities formed on the dither pits, coded pit trains, jitter modulation signals, and the like. Various information can also be formed in a composite manner. For example, an address servo area of a plurality of position determining regions extending linearly in a half-control direction can be set at a predetermined angular interval, and a sector interval of an adjacent address servo area can also be set as a data area. . It can also be used in the address servo area by sampling servo.

The information of the focus servo and the tracking servo and the address information are formed by recording the servo pit pattern in advance using groove pits (servo pits). The thickness of the second substrate is preferably 0.1 to 5 mm, and preferably 0 to 3 mm. When the thickness of the first substrate is less than Q lmm, it is difficult to maintain the mechanical strength of the hologram recording medium. When the thickness exceeds 5 mm, the weight of the hologram recording medium increases, and an excessive load is applied to the spindle motor, which is not suitable. (Reflective layer) A reflective film is formed as a reflective layer on the surface of the feed pocket pattern of the second substrate. The reflection_material should use a material that has high reflectivity for the f-light and the reference light. For example, A1, alloy, Ag, Ag alloy, All, Cu alloy, etc. are preferred. The method for forming the reflective film is not particularly limited, and a vacuum deposition method such as a PVD method such as a hetero method or a method for forming various thin media such as a CVD method can be applied. However, 疋' is a stripe which is produced in an environmental resistance test in which the holographic recording medium does not undergo high temperature and high humidity, and is particularly excellent in the case of the base (four) (four). Therefore, it is preferable to use a sputtering method. The film thickness of the reflective layer is preferably in the range of 1 〇 to 5 〇〇 nm, but in order to suppress the decrease in signal characteristics caused by the reduction of the reflective sheep, it is preferable to use 3()~, preferably 40~l. 〇〇nm. 15 201022864 (gap layer)

The gap layer is formed for the purpose of flattening the surface of the second substrate. The material which can be used for the gap layer is preferably such that even if a filter layer is laminated on the gap layer, the gap layer deformation caused by heat at the time of lamination does not occur, and the recording material is not laminated on the filter layer. The generated heat or shrinkage stress causes deformation of the gap layer, and the filter layer does not have defects such as wrinkles and is excellent in heat resistance. The material constituting the gap layer of the hologram recording medium of the present invention is the film for the gap layer. (Filter layer) The filter layer has a reflection wavelength that does not occur even if the incident angle is changed, and the reference offset prevents the reflection film from the holographic recording medium from being caused by the light of the gamma-ray image. Reflection, to prevent the function of noise generation. Through the layered filter layer in the medium, the high-resolution, diffractive image image recording filter can be obtained to transmit the first wavelength of light, and the reflection and the first spring

Light of a second wavelength having a different light is preferred, a light of a preferred first wavelength is 6 〇 Onm ′ and a light of a second wavelength is 6 〇〇 9 9 nm. The grass layer filter layer is not particularly limited, and for example, a dielectric ruthenium nickel layer or a layer of two or more cholesteric layers may be used, and may be formed by other singular bodies as needed. (Protective layer) / T Both cores, a protective layer is formed between the filter layer and the recording layer. Protection of the wide-ranging reference) The purpose of reducing the recording performance of the full-image recording medium. The spotlight position of the information light and t is in the recording layer. When there is no protective layer, the recording performance is degraded due to the photoreaction of %16 ▼201022864 μ. That is, by using the protective layer, excessive photoreaction near the condensing position can be suppressed, and recording performance can be maintained. The thickness of the domain layer is not particularly limited, but it is preferably a fine, ^ 3 ΙΟΟ μηι. If it is insufficient, the aging of the hologram in the hologram recording is too large, and there is a case where the sensitivity is lowered or the recombination is lowered and = is appropriate. On the other hand, if it exceeds 2 qingm, it is unsuitable because the focus position becomes farther than the recording layer, resulting in a decrease in recording performance.曰© (recording layer) The recording layer is a layer that records information by using hologram technology by superimposing the information light that is to be granted information inside the recording medium and the reference light that can interfere with the information light into a two-dimensional image. Irradiation of electromagnetic waves at a predetermined wavelength, lines, X-rays, ultraviolet rays, visible light, infrared rays, radio waves, etc.

The intensity is such that an optical property such as an absorption coefficient or a refractive index changes. The material constituting the recording layer is preferably a structure having a three-dimensional crosslinked polymer matrix other than a general radical polymerizable compound and a photoradical polymerization initiator. As the compound constituting the three-dimensional crosslinked polymer forming the matrix, a cyclic ruthenium compound can be used. Specifically, the epoxide may, for example, be hydrazine, 4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, diethylene glycol diglycidyl ether or polyethylene glycol condensed water. Glycerol ether, polypropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, diepoxyoctane, resorcinol diglycidyl ether, diglycidyl ether of bisphenolphthalein, diglycidyl bisphenol F Ether, 3,4_epoxycyclohexenylmethyl_3,4, epoxide cyclohexene carboxylate and glycidoxypropyl end polydimethyl oxazepine. 17 201022864 The radical polymer may be a compound having an ethylenically unsaturated double bond. For example, unsaturated acid retardation, unsaturated acid sulphate, unsaturated oleic acid amide, ethylene compound and the like can be mentioned. More specific examples, acrylic acid, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, isobutyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, dodecyl acrylate, acrylic acid Octaalkyl ester, cyclohexyl acrylate, dicyclopentenyl acrylate, acryl acrylate, acrylic vinegar, acetazone, methacrylic acid, methacrylate, propyl methacrylate, A Butyl acrylate, phenyl methacrylate, phenoxyethyl acrylate, chlorophenyl acrylate, adamantyl methacrylate, isodecyl methacrylate, N-methyl acrylamide, hydrazine, hydrazine - dimethyl methacrylate, hydrazine, hydrazine-methylene bis acrylamide, propylene hydrazine, vinyl pyridine, styrene, bromostyrene, gas styrene, tribromophenyl acrylate, three Chlorophenyl acrylate, tribromophenyl methacrylate, trichlorophenyl decyl acrylate, vinyl benzoate, vinyl 3,5-dichlorobenzoate, vinyl naphthalene, vinyl naphthoate , naphthyl methacrylate, naphthyl propylene Ester, fluorenyl-phenyl methacrylamide, fluorene-phenyl acrylamide, hydrazine-vinyl pyrrolidone, hydrazine-vinyl carbazole, 1-vinylimidazole, dicyclopentenyl acrylate, 1,6- Hexanediol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, diethylene glycol diacrylate, polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, three Propylene glycol diacrylate, propylene glycol trimethacrylate, fluorene-vinyl carbazole and fluorene-vinyl pyrrolidone. The photoradical polymerization initiator may, for example, be a D-m-sodium derivative, an organic guanamine compound, a titanocene, an organic peroxide or a thioxanthone derivative. Specific examples of 201022864 include benzyl, benzoin, benzoin ethyl ether, benzoin isopropyl ether, benzoin butyl ether, benzoin isobutyl ether, hydroxycyclohexylphenyl hydrazine, and benzyl methyl condensate. Ketone, benzylethyl ketal, benzyl methoxy ketal, 2,2, diethyl acetophenone, 2,2'-dipropyl acetophenone, 2-hydroxy-2-benzinobenzene Acetone, p-tert-butyl butyl diacetophenone, sedative ketone, 2-ox η dying ketone, 331 4 4, _ tetra (tert-butylperoxy) phenyl, _ 仏 仏 仏曱基凡^^Triazine, 2-(p-methoxyphenyl)_4,6-bis(trichloroindenyl}1,3,5-triazine, 2-7-methoxyphenyl)vinyl ]-4,6-bis(trimethylsulfonyl)l,3,5-triazine, Irgacure 149,184,369, 651,784,819,907,1700,1800,1850, etc., manufactured by Ciba Specialty Chemical Corporation Numbered substance, di-tert-butyl peroxide, bisisophenylpropyl peroxide, tert-butyl isophenylpropyl peroxide, tert-butyl peroxyacetate, tert-butyl phthalate peroxide Oxidized benzoic acid tert-butyl vinegar, acetamidine peroxide, isobutyl ketone peroxide, thiol peroxide Twelve acyl peroxide, benzoyl peroxide brewing group, t-butyl hydroperoxide, cumene hydroperoxide, methyl ethyl ketone peroxide, cyclohexanone peroxide and the like. It is necessary to add sensitizing dyes such as cyanine, berberine, xanthene derivatives, coumarin, and blush, decane coupling agents and plasticizers. When the recording layer solution containing the above-mentioned three-dimensional crosslinked polymer, radical polymerizable monomer, or photopolymerization initiator is applied onto the protective layer, the (four) method or the spin coating method may be employed. The second substrate including the filter and the optical layer and the first substrate are disposed at intervals of a spacer made of a resin, and the recording layer material may be dissolved into the gap. The three-dimensional cross-linking of the matrix polymer can also be carried out at room temperature in the case of using an aliphatic primary amine, but can also be heated to about 19 201022864 3 〇 C 15 〇 C depending on the reactivity of the hardener. When the film thickness of the recording layer is preferably less than 20 μm in the range of 20 μm to 2 mm, it is difficult to obtain a sufficient recording capacity, and if it exceeds the field, the sensitivity of the recording layer and the diffraction efficiency are lowered. The preferred recording layer thickness is in the range of 50 μm to 1 mm. (First substrate) The first substrate is laminated on the recording layer, and is preferably a light-transmitting substrate. For , , shape,,. The size and the like are not particularly limited, and may be appropriately selected as needed, and the same shape and material as the second substrate may be used.

The thickness of the first substrate is not particularly limited, and is preferably 5 to 2, fine (four), and preferably 100 to 1. If the thickness of the above-mentioned support body is less than _, the function of protecting the #recording layer is reduced. If the thickness exceeds the thickness, the distance from the surface of the first substrate to the recording layer and the servo pit layer is increased, and the focal length of the recording and reproducing light is reduced. It is too long to be suitable. <Full image recording and reproduction method>

. ', Wan Huiya, ... special restrictions, room selection can be done according to the purpose. For example, the omni-directional recording medium is irradiated with a dry image formed by interference of the coaxial beam and the reference light by the interference of the reference light of the information field: a holographic recording method in which information is recorded on the recording layer in a coaxial manner. The regeneration method is not particularly limited, and may be appropriately selected according to the purpose. For example, the (four) description of the hybrid side (four) recording layer on the job of interference, wide illumination, reference light (four), the light should interfere with the image reproduction record information month ' In the recording method and the reproducing method, the information light of the sleeve information is superimposed on the inside of the recording layer, and the reference image having the substantially constant intensity of the information is superimposed into a two-dimensional image, thereby forming an interference image. Recording layer internal 20 201022864 distribution of photon characteristics, in order to record information. On the other hand, when the information that has been written is reproduced, the recording layer is irradiated with only the reference light using the same configuration as that at the time of recording, and the reproducing light having the intensity distribution corresponding to the optical characteristic distribution of the recording layer (10) is obtained. Hereinafter, the present invention will be described in more detail by showing specific examples. Further, the series operation in the present embodiment is performed in a room where short-wavelength light having a wavelength of less than 60 nm is shielded from light, so that the recording layer does not undergo exposure. EXAMPLES Hereinafter, the examples are described in detail. However, the present invention is not limited thereto as long as it does not exceed the gist of the invention. The "parts" in the examples and comparative examples indicate the weight points. In addition, the evaluation was carried out in accordance with the following method. (1) The glass transition temperature was measured using a thermal analysis system DSC-2910 manufactured by TA Instrument Corporation under the conditions of a heating rate of 2 〇 ° C/min under a nitrogen atmosphere (nitrogen flow rate: 40 ml/min) according to JIS K7121. . (2) Viscosity average molecular weight The polycarbonate resin composition particles were dissolved in 100 ml of methane methane. g.7g' The specific viscosity (η5ρ) of the solution at 2 ° C was measured, and the viscosity average molecular weight was calculated by the following formula. Η5ρ/〇=[η]+0.45χ[η]^ [η]=1.23χ10'4Μ° 83 T| sp. specific viscosity η: ultimate viscosity c: constant (=0.7) 21 201022864 M: viscosity average molecular weight (3 The thickness of the film and the thickness of the film were measured using a continuous thickness gauge (a film continuous side thickness gauge KG6 01A manufactured by Amrtsu Co., Ltd.). (4) Spectral light transmittance of the film A sample was taken at three positions in the film width direction. The spectral light transmittance of the sample at wavelengths of 4〇5ηηι, 532nm, and 65〇nm was measured using a spectrophotometer U-4100 manufactured by Hitachi, Ltd. Five points were measured for each sample. The average value of 15 points of the three samples in the width direction is the book light transmittance of each wavelength. In addition, the measurement system was carried out in accordance with JIS K71〇5. (5) Measurement of the in-plane hysteresis value (Re) The hysteresis value was measured for the full width of the sample in the width direction at intervals of 1 Omm by a hysteresis continuous measuring instrument (trade name: KOBRA-WFD, manufactured by Oji Scientific Instruments Co., Ltd.). The wavelength of the light source was measured to be 589 nm. (6) Measurement of hysteresis value (Rth) in the thickness direction The same full width of the measurement as in the above item (5) was sampled, and the width direction of the film was equally divided into five. The sample piece to be measured was cut out from the sample of the aliquot, and the measurement was carried out by a @ birefringence measuring device (trade name: KOBRA-WR, manufactured by Oji Scientific Instruments Co., Ltd.). The film sample was rotated by its slow axis or fast axis, and the hysteresis value was measured after changing the incident angle. From these data, the refractive indices ~, % and ~ were calculated. Step-by-step calculation

Rth[nm]={(nx+ny)/2-nz} xd Here, d represents the thickness (nm) of the film to be measured. 22 201022864 (7) Recording and reproduction evaluation of holographic recording medium (corresponding to a wavelength of 532 nm) Using a coaxial holographic recording tester SHOT-2000 manufactured by Pulstec Industrial Co., Ltd., the holographic recording medium was irradiated with a semiconductor laser (532 nm). For the information light and the reference light for recording, the spot size is recorded as a diameter of 2 〇〇 pmR in the focus position of the holographic image, and a group of composite holograms 13 χ 13 (49 volts) is recorded on the recording layer of the hologram recording. Make information into an interference image for recording. When this recording is performed, the number of rotations of the disc is 1 rpm, and the irradiation time of the laser light for recording one piece of information is 1 〇〇μ8, and the light intensity is 丨〇〇mW. In addition, regeneration is performed using the same device. The regeneration condition is that the number of revolutions of the hologram recording medium is 10 rpm, and the light for reproduction is 532 nm laser light having the same wavelength as the reference light, the irradiation time is 1 〇〇 μ 8 , and the light intensity is 1 〇〇 mW, and the reproduction time is measured. Bit error rate (hereinafter referred to as BER) and SNR. A practical standard is that the SNR is above 4 and the BER is below lxl 〇 _3. (8) Evaluation of recording and reproduction of holographic recording medium (corresponding wavelength 4〇5nm) Using a coaxial holographic recording tester SHOT-2000 manufactured by Pulstec Industrial C〇_, Ltd., semiconductor laser (4〇5nm) The holographic recording medium is irradiated with the information light and the reference light for recording, and in the focus position of the holographic image, the size of the recorded light spot is 2 〇〇 μιη, and a set of composite holograms 13x13 (49 weight) is On the recording layer of the holographic recording medium, the information becomes an interference image and is recorded. When this recording is performed, the number of rotations of the optical disk is l rpm, and the irradiation time of the laser light for recording one piece of information is 200 ps, and the light intensity is 700 μ ν. In addition, regeneration is performed using the same device. The condition for regeneration is that the multiplexed recording medium rotates at 10 rpm. The light for reproduction is laser light of 4 〇 511111 having the same wavelength as the reference light, and the irradiation time is 200 μ 8 'light intensity 150 μ λ ν, and the bit 23 at the time of reproduction is measured. Bit error rate (hereinafter referred to as BER) and SNR. The utility standard SNR is above 4 and the BER is below ΐχι〇_3. Example 1 (Polycarbonate resin composition pellets were prepared using a polycarbonate resin powder of bisphenolphthalein (Panlite (registered trademark) CM-1000) manufactured by Teijin Chemicals Co., Ltd., and three (2 4) were added to the powder. _25% by weight of bis-tert-butylphenyl phosphite ruthenium and 0.3 parts by weight of Plast Red 8340 (chemical name Cls〇lvent Red 207) manufactured by the Chemical Industry Co., Ltd. as an anthraquinone dye, uniformly mixed Then, using a ventilated twin-screw extruder [KTX-46 manufactured by Kobe Steel Co., Ltd.], the cylinder temperature is 26 〇. (: The resin mixture particles are melted and melted, and the resin composition particles are obtained. The viscosity average molecular weight and glass transition temperature of the obtained pellets are shown in Table C. CISolvent Red 207 is a compound shown below. Compound name. 1.5-Dicyclohexylamino anthraquinone Structural formula:

Film formation of α (ii) gap layer film The obtained pellets were dried under a no-drying scaffolding dryer for 4 hours. This was put into a heating hopper 24 201022864 of a melt extruder heated to 110 ° C, and melt-extruded at 29 (TC). The filter for removing foreign matter of the molten polymer used an average mesh size of 1 (^111 3118 Non-woven disc-shaped filter. The filtered molten resin was extruded to a cooling roll surface having a rotating diameter of 800 mm and a roll surface length of 1,800 mm by a T-die set to 290. The width is 1,500 mm and the lip gap is about 2 mm. In addition, the distance between the front end of the lip of the T-die and the surface of the cooling roll (mold gap) is set. In order to uniformly cool the film and remove it, electrostatic sealing is used. The film is fully adhered to the surface of the cooling roll. The electrode for electrostatic adhesion uses a cleaned stainless steel piano wire. The positive electrode of the DC power source is connected to the piano wire, and the cooling roller side is grounded. It is 7 KV. Then, the film with a thickness of (7) is removed by a pulling roller at a speed of 10 m/min. Then, the film is continuously heat treated in a roll-suspended heat treatment machine. Configuration of 1 〇〇 mm (p roll The distance between the upper and lower rolls is 1.6 m, and the distance between each adjacent roll is the same as the diameter of the roll. Then, the film to be treated is left in the oven in the roll-suspended heat treatment machine to make a length of about 5 〇. m (residence time 60 seconds). The hot air temperature in the oven in the heat treatment machine is 145 ° C, the film tension at the exit of the oven is 3.0 Kg / (thickness i 〇〇 pmx film full width 1 ' 44 〇 mm) (per square centimeter) The cross-sectional load was 2.lKg. The film from the oven was cooled to below 60 ° C and then taken out to room temperature using the same roll-suspended processor. The heat-treated film was cut at 70 mm at both ends to obtain 1 A film having a thickness of 300 mm. The thickness, thickness unevenness, spectral light transmittance, in-plane hysteresis value (Re), and hysteresis value (Rth) in the thickness direction of the obtained polycarbonate film are shown in Table 1. 201022864 (iii) The preparation of the hologram recording layer uses a three-dimensional crosslinked polymer 1,6-hexanediol diacrylate. In addition, a radical polymerizable compound polyethylene glycol diacrylate is used. The liquid is as follows. Add photopolymerization to 100 parts by weight of polyethylene glycol diacrylate. Irgacure 784 (manufactured by Ciba Specialty Chemical Corporation) was added in an amount of 3 parts by weight, and further mixed with a viscosity adjusting solvent of THF 0.3 parts by weight, and mixed at room temperature to form a total weight of the hologram-like recording layer solution, and the ratio of the matrix material was 67% by weight, the ratio of the photopolymerizable monomer was 33% by weight, and a hologram recording layer solution was prepared. ® (iv) Production of a hologram recording medium (second substrate) Polycarbonate resin using a resin as a second substrate Granules (Panlite (registered trademark) AD-5503, manufactured by Teijin Chemicals Co., Ltd.), formed by an optical film injection molding machine (SD-40E manufactured by Sumitomo Heavy Industries, Ltd.), an outer diameter of 120 mmq), an inner diameter of 15 η ιηηφ, and a thickness. L.lmm format signal input type optical disc substrate. (Formation of the reflective layer and the gap layer) © Using the obtained optical disk substrate, it is supplied to the heart and the Disc bonding device (Mebius F-Ι manufactured by ShiBaura Mechatronics Corporation). In the

In the Mebius F-1, except for the optical disk substrate, a target for magnetron sputtering using an Ag alloy manufactured by Kobelco Scientific Co., Ltd., which is used for the formation of a reflective layer, is used as a film for a gap layer to provide a large Japanese ink. EX-8410 manufactured by Chemical Industry Co., Ltd. is used as a resin for bonding to a disk substrate. After forming a reflective layer of Ag alloy on the optical disk substrate by sputtering in MebiusF i, spin coating bonding 26 201022864 is performed by using a resin 'only the polycarbonate film is taken out from the laminated film roll for the gap layer' and then tapped into a disk shape. The film for the gap layer after the tapping is bonded to the substrate, and the gap layer is formed by ultraviolet irradiation. (Formation of Filter Layer and Protective Layer) Then, a dichroic mirror made of a layer of Si〇2 and Ti〇2 by vacuum deposition was used as a filter layer. Next, the Panlite (registered trademark) film D_92 manufactured by Teijin Chemicals Co., Ltd. was used in the same manner as the gap layer.

Layer protection layer. (The formation of the s recording layer and the first substrate) A glass substrate having an outer diameter of 120 mmcp and an inner diameter of 15 mm (p, a thickness of 66 mm (a 0.6 mm thick mirror optical disk manufactured by TOKIWA Optical Corporation) was used as the first substrate by spin coating. The hologram recording layer solution prepared by the above (ii) was applied onto a protective layer, and the first substrate was bonded thereon. It was shielded from light at '80 ° C for 5 hours' to prepare a recording layer having a thick 〇 6 rmn recording layer. In the case of a recording medium (see Fig. 1), the recording and reproduction evaluation of the holographic medium obtained by the wavelength of 53211111 is described in Table 1. Example 2 Sumiplast Red HFG (manufactured by Sumitomo Chemical Co., Ltd.) was added as a dye. The same procedure as in Example 1 was carried out except that the chemical name CISolvent Red 149) was 0.15 parts by weight. The evaluation results are shown in Table 1. CISolvent Red 149 is the compound shown below. Compound name: 6-(Cyclohexylamino)- 3-N-methylanthra- pyridone Structural formula: 27 201022864

Example 3

The same operation as in Example 1 was carried out except that Plast Red 8360 (chemical name C.I. Solvent Red 52) manufactured by Toka Chemical Co., Ltd. was added as a dye in an amount of 0.5 part by weight. The evaluation results are shown in Table 1. C.I. Solvent Red 52 is the compound shown below. Compound name: 3-Methyl-6-(p-toluidino)_3H-dibenz(F,ij) isoquinoline-2,7-dione Structural formula:

Example 4 In addition to the addition of a quinoline-based dye as a dye, Plast Yellow 8010 (chemical name CISolvent Yellow 157), manufactured by Toomaku Industries, Ltd., 0.1 weight 28 201022864, was used for recording and reproduction evaluation of holographic media at a wavelength of 405 nm. All the same operations as in Example 1 were carried out. The evaluation results are shown in Table 2. C.I. Solvent Yellow 157 is a compound shown below. Compound name: ^SjjJ-Tetradiloro-l-P-quinolyD-lJ-indandione Structural formula:

Example 5

In addition to the addition of 0.3% by weight of Plast Yellow 8005 (chemical name CISolvent Yellow 33) manufactured by Seiko Chemical Co., Ltd., which is a quinoline-based dye as a dye, the recording and reproduction evaluation of the holographic medium at a wavelength of 405 nm was carried out. Example 1 the same operation. The evaluation results are shown in Table 2. C.I. Solvent Yellow 33 is the compound shown below. Compound name: 2-(2-quinolyl)-l,3-indandione Structural formula:

29 201022864 In addition to the addition of a quinoline-based dye as a dye, Plast Yellow 8040 (chemical name Disperse Yellow 54) manufactured by Toka Chemical Co., Ltd., 0.5 parts by weight, and all of the recording and reproduction evaluation of the holographic medium at a wavelength of 405 nm were carried out. Example 1 the same operation. The evaluation results are shown in Table 2.

Disperse Yellow 54 is a compound shown below. Compound name: 2-(3-hydroxy-2-quinolinyl)-l,3-indandi〇ne Structural formula:

Comparative example 1

The same operation as in Example 1 was carried out except that Plast Red 8340 (chemical name C.I. Solvent Red 52) manufactured by Toka Chemical Co., Ltd. was added as a dye in an amount of 0.005 by weight. The evaluation results are shown in Table 1. Comparative Example 2 The same operation as in Example 1 was carried out except that 3.0% by weight of the Chemical City Co., Ltd. product No. Red 8340 (chemical name C.I. Solvent Red 52) was added as a dye. The evaluation results are described in the table. Comparative Example 3 All the same operations as in Example 进行 were carried out except that polycarbonate resin powder (Panlite (registered trademark) CM-1000) was used without adding a dye. The evaluation results are shown in Table 1. 30 201022864 Comparative Example 4 In addition to the addition of a quinoline-based dye as a dye, Plast Yellow 8010 (chemical name CISolvent Yellow 157) manufactured by Tokubo Chemical Co., Ltd. was 0.005 parts by weight, and the recording and reproduction evaluation of the holographic medium was performed at a wavelength of 405 nm. All the same operations as in Example 1 were carried out. The evaluation results are shown in Table 2. Comparative Example 5 In addition to the 3.0% by weight of Plast Yellow 8010 (chemical name CISolvent Yellow 157) manufactured by Seiko Chemical Co., Ltd., which is a quinoline-based dye added as a dye, the recording and reproduction evaluation of the holographic medium was carried out at a wavelength of 405 nm. All the same operations as in Example 1 were carried out. The evaluation results are shown in Table 2. Comparative Example 6 The same operation as in Example 1 was carried out except that polycarbonate resin powder (Panlite (registered trademark) CM-1000) was used without adding a dye, and recording and reproduction evaluation of the hologram medium was performed at a wavelength of 405 nm. The evaluation results are shown in Table 2.

Project Unit Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Matrix Polymer - Panlite® CM-1000 Panlite 8 CM-1000 Panlite ® CM-1000 Panlite ® CM-1000 Panlite ® CM-1000 Panlite ® CM-1000 Dye Chemical Name - CISolvent Red 207 CISolvent Red 149 CISolvent Red 52 CJ.Solvent Red 207 CISolvent Red 207 - Dye Addition wt% 0.30 0.15 0.50 0.005 3.00 0.00 Viscosity Average Molecular Weight - 15^00 15,200 15 ^00 15^00 15,200 15200 Glass transition temperature °c 145 145 145 145 145 145 Optical film thickness irregularity μηι ±1 ±1 ±1 Soil 1 ±1 ±1 Split light transmittance 532nm % 0 5 0 90 0 90 Split light Transmittance 650nm % 90 90 90 90 50 90 Re nm 3~5 3~5 3~5 3~5 3~5 3~5 Rth nm 50 55 55 50 55 55 Recording Evaluation SNR - 5.0 4.8 4.8 1.5 0.8 1.5 BER - 5X10&quot;4 7xl〇4 8X10·4 8xl0·2 7xl〇·' 8xl0'2 31 201022864 Table 2 Item Single Bamboo Example 4 Example 5 Example 6 Comparative Example 4 Comparative Example 5 Comparative Example 6 Matrix Polymer - Panlite ® CM-1000 Panlite d) CM-1000 Panlite® C M-1000 Panlite ® CM-1000 Panlite ® CM-1000 Panlite ® CM-1000 Dye Chemical Name - CISolvent Yellow 157 CISolvent Yellow 33 Disperse Yellow 54 CISolvent Yellow 157 CISolvent Yellow 157 Dye Addition Wl% 0.10 0.30 0.50 0.005 3.00 0.00 Viscosity average molecular weight - 15,200 15,200 15,200 153〇15,200 15200 Glass transition temperature °c 145 145 145 145 145 145 First film thickness irregularity ±1 ±1 ±1 ±1 ±1 Soil 1 ±1 Split light transmittance 405nm 0 0 0 89 0 89 90 Spectral light transmittance 650nm Re 90 90 90 90 60 90 90 3~5 3~5 3~5 3~5 3~5 3~5 3~5 Rth 50 55 55 50 55 55 55 5 Record reproduction evaluation SNR 4.9 4.8 4.8 1.5 1.0 1.5 8xl〇·2 1.5 8χΐσ2 BER 6x10&quot; 8χ104 5X1Q-4 8xl〇'2 4x10“

OBJECT OF THE INVENTION The film of the present invention has light absorption even if light leakage from the information light and the reference light from the filter layer occurs, and the thickness unevenness is small, and the birefringence is low, so that the film is used as a hologram recording of the gap layer. The ship, the hologram recording and reproduction, has less noise, and is useful as a holographic recording medium, which can distinguish the industrial effects it exerts. [Simple description of the map]

Fig. 1 is a view showing a hologram recording medium and a schematic diagram of its reference light and reference light used in a coaxial manner. [Description of main component symbols] 卜·Second substrate 2...Reflecting layer 3...Gap layer 4...Filter layer 5...Protective layer 6...Recording layer 7...First substrate 8···Servo pit pattern 9··· Servo light (red laser light) 10... information light / reference light (green or blue laser light) 32

Claims (1)

.201022864 VII. Patent application scope: 1 · The film for the gap layer of the holographic recording medium is composed of 100 parts by weight of the polycarbonate tree and the lanthanide dye and/or quinoline dye 〇.〇1 ~ 1.5 parts by weight of the resin composition was formed. 2. The film according to the first aspect of the invention, which has a spectral light transmittance of 85% or more at a wavelength of 650 nm and a spectral transmittance of 15% or less at a wavelength of 532 nm. 3. The film according to the invention of claim 2, which has a spectral light transmittance of 85% or more at a wavelength of 65 Å and a spectral transmittance of 15% or less at a wavelength of 4 〇 5 nm. 4. The film according to any one of claims 1 to 3, which has a thickness of 5 to 200 μm and a thickness unevenness of ± 5% or less. The film according to any one of the preceding claims, wherein the film has an in-plane hysteresis of 2 〇 nm or less and a hysteresis in the thickness direction of 60 nm or less. 6. The method of applying the film described in the scope of the patent application to the gap layer of the full-length recording medium. 7. A holographic recording medium comprising: a second substrate constituting a support, a reflective layer, a gap layer, a filter layer, a protective layer, a recording layer, and a first substrate that is light transmissive, and is to be given information The information light and the reference light that can interfere with the information light are superimposed into a two-dimensional image, and the holographic recording medium that records the information by using the holographic technique is characterized in that the gap layer is composed of 100 parts by weight of polycarbonate resin and 蒽A film formed of a resin composition of an anthraquinone dye and/or a quinoline dye of 0.01 to 15 parts by weight. 33