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公开(公告)号：JPH02211431A
公开(公告)日：1990-08-22
申请号：JP3111689
申请日：1989-02-13
摘要： PURPOSE:To easily form the nonlinear optical element which can exhibit a nonlinear optical effect and has good efficiency by constituting the core part of an org. nonlinear compd. which constitutes the clad part and the atoms in the molecules of which are substd. CONSTITUTION:A crystal substrate 5 is constituted of an arm. compd. which is liable to release, for example, a hydrogen atom and alkaline metal, etc., and has preferably a hydroxyl group. A positive type photoresist 7 is spin coated on this substrate 5 and a mask 6 is superposed thereon. The photoesist is then exposed and developed. The substrate 5 is immersed in a soln. 10 to substd. the atoms of the org. nonlinear compd. of the part where the photoresist 7 is removed. As a result, the thickness (depth) of the formed waveguide is easily controlled to a desired value. The difference in the refractive index between the core part and the clad part is suppressed to a small level and the good optical element which can exhibit the nonlinear optical effect is obtd.
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公开(公告)号：JPH0213929A
公开(公告)日：1990-01-18
申请号：JP16543688
申请日：1988-06-30
摘要： PURPOSE:To reproduce in the density region of several tens levels or above in case of recording an image possessing half tone by converting a laser beam source to a second higher harmonics by means of a second higher harmonics generating (SHG) element and modulating the second higher harmonics. CONSTITUTION:A signal B corresponding to blue is inputted to a modulation circuit 4, and impressed to the SHG element 3 as a modulation signal. The beam outputted from a semiconductor laser 1 is converged by a lens 2 and supplied to the SHG element 3, and the SHG element 3 outputs the light which is intensively modulated by the signal B, and the light is collimated by a collimater lens 5, and after it is reflected by a mirror 7, it reaches a polygon mirror 22. The light scanned by the polygon mirror is converted to f-2theta by f-theta23 and image-formed on a photosensitive material. Thus, the light intensively modulated corresponding to the signals B, G and R is exposed on the photosensitive material. For recording the half-tone image, it is reproduced in the density region of more than several tens levels.
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公开(公告)号：JPH02934A
公开(公告)日：1990-01-05
申请号：JP13077188
申请日：1988-05-27
IPC分类号： G02F1/35 , C07C235/46 , C07C237/30 , C07C237/36 , C07D209/08 , C07D235/30 , C07D295/14 , C07D317/68 , C07D521/00 , G02F1/355 , G02F1/361
摘要： PURPOSE:To obtain a high nonlinear optical effect by using a specific compd. so that inverse symmetry is hardly obtainable in a bulk state such as crystal or thin film and the material has substantially no absorption in a visible region. CONSTITUTION:The compd. expressed by formula I is used as this material. In formula I, D denotes an electron-donating group; C denotes a monovalent org. group; R denotes a hydrogen atom, alkyl group, aryl group or heterocyclic group; (m) denotes 1-3 integer; (n) denotes 0-3 integer. This compd. is usable as the nonlinear optical material in various forms such as single crystal, powder, soln. the thin film (Langmuir-Blodgett film, vapor deposited film, etc.) deposited on a base or the form of blending the same into a polymer or liquid crystal molecules. The material which has substantially no absorption in the visible region is obtd. and the inverse symmetry is hardly obtainable in the form of use. In addition, high second harmonic waves are generatable.
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公开(公告)号：JPS63142515A
公开(公告)日：1988-06-14
申请号：JP28969286
申请日：1986-12-03
摘要： PURPOSE:To produce a magnetic recording medium not orientated magnetically and having no magnetization anisotropy and with high magnetic coercive force and high productivity, by laminating successively and continuously a chrome surface layer and a thin film type ferromagnetic layer containing cobalt by a specific quantity or more on a flexible non-magnetic substrate by a vacuum vapor-depositing method. CONSTITUTION:At the time of producing an in-plane magnetization floppy disk of a thin film type by high speed laminating, it is formed by laminating successively and continuously a chrome surface layer and a thin film type ferromagnetic layer containing >=50wt% cobalt on a flexible nonmagnetic substrate by a vacuum vapor-depositing method. A vapor-deposited substance can be evaporated by either a resistance heating method or an electron beam heating method. By executing continuously the vacuum vapor deposition of the surface layer and the magnetic layer, the overall vapor deposition time can be shortened, and a merit for the productivity is generated. As for the content of cobalt as a ferromagnetic metal, >=50wt% is desirable, and 60-95wt% is more desirable.
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公开(公告)号：JPS6360739A
公开(公告)日：1988-03-16
申请号：JP20649786
申请日：1986-09-02
发明人： TAKAHASHI YOSHITAKA , TAKEDA KATSUYUKI , ENOMOTO HIROMICHI , MATSUZAWA TAKAHIRO , ISHIBASHI SHOZO
IPC分类号： B29C71/02 , G11B7/26 , G11B11/10 , G11B11/105
摘要： PURPOSE:To offer a base of a data recording medium having excellent optical and physical properties, by providing a means which carries out positively heating and/or cooling treatments on a base after molding. CONSTITUTION:A base plate 12 of a specified shape on which a recording layer is to be provided is prepared by means of injection molding. This molded base plate 12 is positively treated by heating and/or cooling (i.e. temp. control). For example, the surrounding atmosphere is heated or cooled by means of a heater 30 or a cooler, or a heater or a cooler 31 is provided in the course of a conveyer 25. As above described, by providing a processor for controlling the temp. of the base plate in a base manufacturing apparatus, the base plate having good quality and uniformity can be prepared with high yield and it is possible to meet the requirements for making the base plate to be high accuracy which is essential to increase the density and capacity of an optical disk.
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公开(公告)号：JPS6323245A
公开(公告)日：1988-01-30
申请号：JP16762186
申请日：1986-07-15
发明人： TAKAHASHI YOSHITAKA , TAKEDA KATSUYUKI , MATSUZAWA TAKAHIRO , ENOMOTO HIROMICHI , ISHIBASHI SHOZO
IPC分类号： B41M5/26 , G11B11/10 , G11B11/105
摘要： PURPOSE:To obtain a disk having good plane accuracy on the face on a reading- out side and excellent C/N by specifying the average center line height on the reading out side face of the optical disk. CONSTITUTION:The average center line height (Ra) of the face on the reading- out side of the optical disk formed by providing a recording layer on a transparent substrate is specified to
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公开(公告)号：JPS6310356A
公开(公告)日：1988-01-16
申请号：JP15549486
申请日：1986-07-02
发明人： MATSUZAWA TAKAHIRO , ENOMOTO HIROMICHI , TAKAHASHI YOSHITAKA , TAKEDA KATSUYUKI , ISHIBASHI SHOZO
IPC分类号： G11B11/10 , G11B11/105
摘要： PURPOSE:To improve the adhesiveness of an org. protective film to dielectric films by providing the dielectric film, the org. polymerized film formed by a plasma CVD method and the org. protective film successively on a thin magnetic film. CONSTITUTION:A 1st dielectric film 2A, the thin magnetic film 3, a 2nd dielectric film 2B, the org. polymerized film 4 by the plasma CVD and the org. protective film 5 are successively formed on a transparent substrate 1. The polymerized film 4 of the org. material is formed by the plasma CVD method on the dielectric film, then the film obtd. by the plasma CVD method has the higher activity than the activity obtd. by a general CVD method and as a result, the good tight adhesiveness and adhesiveness are imparted to the dielectric film. The dielectric film 2B and the org. polymerized film 4 as well as the org. polymerized film 4 and org. protective film which are made of the same org. material are respectively satisfactorily adhered and the exfoliation of the films is prevented.
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公开(公告)号：JPS62293539A
公开(公告)日：1987-12-21
申请号：JP13716986
申请日：1986-06-12
发明人： ENOMOTO HIROMICHI , TAKEDA KATSUYUKI , MATSUZAWA TAKAHIRO , TAKAHASHI YOSHITAKA , ISHIBASHI SHOZO
IPC分类号： G11B11/10 , G11B11/105
摘要： PURPOSE:To obtain excellent recording sensitivity by specifying the temp. conductivities of films to sandwich a recording medium film to serve as an optical memory element to specific values. CONSTITUTION:This magneto-optical recording medium is formed by sandwiching the recording medium film to serve as the memory element between the two layers, at least one of which is a transparent dielectric film. The respective temp. conductivities, designated as a=K/(c.rho), (K: heat conductivity, c: specific heat, rho: density) are so determined as to attain >=5X10 cm /sec and cm /sec. With magneto-optical recording, the recording sensitivity is higher as the heat by laser light is more liable to accumulate in the recording medium. The heat conductivity is, therefore, preferably cm /sec. The energy of the laser light fails to arrive at the recording medium if the temp. conductivity is too low. The heat is substantially transferred to the recording medium film and the excellent recording sensitivity is obtd. if the temp. conductivity is >=5X10 cm /sec in this regard.
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公开(公告)号：JPS62289947A
公开(公告)日：1987-12-16
申请号：JP13318486
申请日：1986-06-09
发明人： ENOMOTO HIROMICHI , TAKEDA KATSUYUKI , MATSUZAWA TAKAHIRO , TAKAHASHI YOSHITAKA , ISHIBASHI SHOZO
IPC分类号： G11B11/10 , G11B11/105
摘要： PURPOSE:To obtain a high performance index and excellent CN ratio by incorporating Ar at a prescribed ratio into the dielectric film of a magneto-optical recording medium having a transparent substrate, thin magnetic film having the axis of easy magnetization in the direction perpendicular to the film plane and the dielectric film. CONSTITUTION:A polymethyl methacrylate, polycarbonate, etc., are incorporated into the substrate 1 of the magneto-optical recording medium having the transparent substrate 1, the thin magnetic film 3 having the axis of easy magnetization in the direction perpendicular to the film plane and the dielectric film 2. GdFe, TbFe, etc., are used for the material of the thin magnetic film 3. For example, an acrylic resin curable by UV rays is formed as a protective film 4 by a spin coating method. CeF3, CaF3, etc., are used in addition to nitrides such as AlN and Si2N4 as the transparent dielectric and Ar is incorporated at, for example, 0.1-10at% into the dielectric film.
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公开(公告)号：JPS62239349A
公开(公告)日：1987-10-20
申请号：JP8166686
申请日：1986-04-09
发明人： ENOMOTO HIROMICHI , ISHIBASHI SHOZO , TAKEDA KATSUYUKI , MATSUZAWA TAKAHIRO , TAKAHASHI YOSHITAKA
IPC分类号： G11B11/10 , G11B11/105
摘要： PURPOSE:To prevent the change with the lapse of time of the title medium due to oxidation and to improve the quality of the reproduced signal by forming a reflective film with an aluminum alloy in the magneto-optical recording medi um wherein a magneto-optical recording layer consisting of a metallic film and the reflective film are laminated. CONSTITUTION:A dielectric film 5, the magneto-optical recording layer 2, a dielectric film 3, and the reflective film 4 are successively laminated on a sub strate 1 to form the magneto-optical recording medium. The reflective film 4 is formed with an aluminum alloy (especially an alloy contg. >=80atomic% Al). Since the alloy elements constituting the reflective film 4 have a function to prevent the diffusion of oxygen, the Kerr rotational angle is increased, and the oxidation of the magneto-optical recording layer 2 is also sufficiently con trolled.
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