公开(公告)号：JPH03274544A

公开(公告)日：1991-12-05

申请号：JP7592690

申请日：1990-03-26

Applicant: SONY CORP

Inventor： KISHII NORIYUKI ,  TAMURA SHINICHIRO ,  ASAI NOBUTOSHI

IPC: G03C1/72 ,  G11B7/24 ,  G11B7/244

Abstract: PURPOSE:To widen the width of material selection and to make improvement in sensitivity by dispersing a light absorptive dye and electron receptor or electron donor into a supporting material to form the above recording medium and specifying the free energy change of an electron transfer reaction. CONSTITUTION:This recording medium is constituted by dispersing the light absorptive dye and the electron receptor or electron donor into the supporting material and specifying the free energy change DELTAG of the electron transfer reaction to

公开(公告)号：JPH0346135A

公开(公告)日：1991-02-27

申请号：JP18085589

申请日：1989-07-13

Applicant: SONY CORP

Inventor： MATSUZAWA NOBUYUKI ,  ASAI NOBUTOSHI

IPC: G11B7/24 ,  B41M5/26

Abstract: PURPOSE:To relieve the restriction on the recording material to be used for a recording layer by laminating the recording layer which contains a thermally decomposing material and a metallic layer which absorbs a laser beam to some extent on a substrate. CONSTITUTION:The metallic layer 3 to be provided on the recording layer 2 has the reflectivity which is high to some extent; in addition, the layer is required to make photo-thermal conversion by partly absorbing the laser beam; therefore, this layer is required to have some absorption to the laser beam. The reflectivity in the laser wavelength of the metallic layer 3 is consequently required to be >=70% and

公开(公告)号：JPH02179944A

公开(公告)日：1990-07-12

申请号：JP33429488

申请日：1988-12-29

Applicant: SONY CORP

Inventor： MATSUZAWA NOBUYUKI ,  ASAI NOBUTOSHI ,  TAMURA SHINICHIRO

IPC: G11B7/26

Abstract: PURPOSE:To form an org. dye layer and a polymer layer at the same time and to enable wide selection of materials by coating a substrate with a coating material prepared by dissolving the org. dye and the polymer which are insoluble to each other into one solvent. CONSTITUTION:On a transparent substrate 1 in which guide grooves are formed as required, the org. dye layer 2 which absorbs semiconductor laser light to effect photothermal conversion, the polymer layer 3 to protect the dye layer 2 are successively laminated. The org. solvent used for preparation of the coating material is properly selected from org. solvents used in the field of optical recording and from those compounds that have enough solubility to both of the org. dye and the polymer and give no damage on the substrate. As for the org. dye, those used in the filed of optical recording can be used, but it is required that the dye is insoluble with the polymer. Thereby, the uniform org. dye layer is formed without damaging the substrate, which improves the reliability of the medium.

公开(公告)号：JPH023373A

公开(公告)日：1990-01-08

申请号：JP14697588

申请日：1988-06-16

Applicant: SONY CORP

Inventor： TAMURA SHINICHIRO ,  ASAI NOBUTOSHI ,  KISHII NORIYUKI

IPC: B41M5/26 ,  G11B7/24 ,  G11B7/244

Abstract: PURPOSE:To form a homogeneous pigment group recording thin-film by using a solvent satisfying specific structure and viscosity. CONSTITUTION:When a pigment group recording thin-film is shaped onto a substrate, a solvent, viscosity of which at 20 deg.C extends over 0.5-5cp and which is shown by general formula R1-R2-OH (where R1 represents H or a 1-5C alkoxy group and R2 a 1-6C alkylene group in general formula), is employed. n- Propanol, isopropanol, isopropyl Cellosolve, etc. are cited as the solvent having such structure. Such a solvent has a wide compatible range, and displays excellent wettability without corroding a polycarbonate resin used as the substrate while it can shape a film superior in film thickness distribution when it is formed to pigment group thin-film composition paints.

公开(公告)号：JPS62167637A

公开(公告)日：1987-07-24

申请号：JP946286

申请日：1986-01-20

Applicant: SONY CORP

Inventor： ASAI NOBUTOSHI

IPC: G11B7/24

Abstract: PURPOSE:To considerably improve the sensitivity for recording and reading by successively laminating multi-layered films recording layer and reflective layer on a transparent substrate to forms a titled recording medium, providing high-refractive index transparent dielectric layers on both faces of a low-refractive index transparent dielectric layer to form the multi- layered films and specifying the thicknesses of the respective dielectric layers. CONSTITUTION:The multi-layered films, the recording layer 5 and the reflective layer are successively laminated on the transparent substrate 1. The multi-layered films are formed by providing the high-refractive index transparent dielectric layers 2, 4 on both faces of the low-refractive index transparent dielectric 3. The thicknesses of the respective dielectric layers are specified to (lambda/4n)(1+2m) (lambda is the wavelength of laser light, n is the refractive index of each dielectric layer, m is 0 or positive integer). Both the 1st high-refractive index layer and the 2nd high-refractive index layer 4 are vapor deposited ZnS films having 85nm thickness and the low-refractive index layer 3 is a vapor deposited MgF2 film having 140nm thickness. The recording with such recording medium is executed by irradiating UV light to the recording layer to convert the benzothiopyrane spiropyrane to a coloring type then irradiating semiconductor laser light thereto to return the same to a decoloring type. The extremely higher sensitivity and percentage modulation of the recording medium are thereby obtd. and the data recording at the higher speed is made possible.

公开(公告)号：JPS62167631A

公开(公告)日：1987-07-24

申请号：JP871686

申请日：1986-01-19

Applicant: SONY CORP

Inventor： TAMURA SHINICHIRO ,  ASAI NOBUTOSHI

IPC: G11B7/00 ,  B41M5/26 ,  G11B7/004 ,  G11B7/005 ,  G11B7/0065 ,  G11B7/24 ,  G11B7/243 ,  G11B7/244

Abstract: PURPOSE:To decrease the quantity of light energy necessary for writing and to improve the recording sensitivity of a recording medium by recording signals as an array of the part where fluorescence is generated and part where the fluorescence is substan tially not generated to the recording medium, irradiating light to the recording medium and detecting the presence or absence of the generation of the fluorescence. CONSTITUTION:The generation of the fluorescence is used as a means for detecting the signal in this method, by which the detection ability is made extremely higher than the detection of the signal by the difference in degree. More specifically, 1pt.wt. 3'-methyl-3-ethoxy-6-nitro-8-methoxyspiro and 10pts.wt. phenoxy resin are dissolved in 100pts.wt. 1:1 solvent mixture composed of a methyl ethyl ketone and cyclohexanone and the soln. is coated on a quartz glass substrate 1 subjected to optical polishing by a spinner and is dried. UV light having 365nm wavelength is irradiated to the coating so that the entire surface forms a color. Then the fluorescence does not appear in the region of a long wavelength in the case B is which the surface is not made to form the color. The fluorescence is observed only in the case A in which the surface is made to form the color. The value of 10% is obtd. as the percentage modulation of the signal when such medium is used for an optical recording medium.

公开(公告)号：JPS6137494A

公开(公告)日：1986-02-22

申请号：JP16087984

申请日：1984-07-31

Applicant: Sony Corp

Inventor： TAMURA SHINICHIRO ,  ASAI NOBUTOSHI

IPC: B41M5/26 ,  G11B7/24

CPC classification number: G11B7/243 ,  G11B7/2531 ,  G11B2007/24304 ,  G11B2007/24324

Abstract: PURPOSE:To obtain an optical recording medium enabled in the almost permanent storage of recording and high density recording and having high resolving power, by forming a recording layer to either one of a non-heated substrate and a non-heated light absorbing layer by using either one of them as a substrate to be so as to provide the same as a vapor deposition film showing no light absorbing characteristic in the wavelength region of visible light. CONSTITUTION:An optical recording medium is constituted by providing a light absorbing layer and the recording layer adjacent to said light absorbing layer o a substrate, and the recording layer is formed by a vacuum vapor deposition method, which used either one of the non- heated substrate and the non-heated light absorbing layer as a vapor deposition substrate, as a vapor deposition film showing no light absorbing characteristic in the wavelength region of visible light. For example, an optical recording medium 1 is prepared by a method wherein a light absorbing layer 3 and a recordng layer 4 comprising a ZnS vapor deposition film with a thickness of about 850Angstrom are laminated to a glass substrate 2 with a thickness of about 2mm. and the recording layer 4 is formed by applying resistance heating to ZnS in a tungsten boat and forming the same to the light absorbing layer 3 by vapor deosition under such a condition that a vacuum degree is 3X10 Pa and a vapor deposition is 3-5 A/S. The formation of the recording layer 4 by vapor deposition is performed by holding the light absorbing layer 3 being the substrate to be subjected to vapor deposition to ambient temp. without heating the same.

Abstract translation: 目的：为了获得在记录和高密度记录的几乎永久存储中具有高分辨能力的光记录介质，通过使用未加热的基板和未加热的光吸收层中的任一个形成记录层， 它们中的任一个作为衬底，以提供与在可见光的波长区域中不具有光吸收特性的气相沉积膜相同的衬底。 构成：通过提供光吸收层和邻近所述光吸收层oa衬底的记录层构成光记录介质，并且记录层通过真空气相沉积法形成，该方法使用非加热衬底 作为气相沉积基板的非加热光吸收层，作为在可见光的波长区域中没有光吸收特性的气相沉积膜。 例如，通过以下方法制备光学记录介质1：将厚度为约850埃的ZnS蒸镀膜的光吸收层3和记录层4层压到厚度约为2mm的玻璃基板2上。 并且记录层4通过对钨舟中的ZnS施加电阻加热而形成，并且在真空度为3×10 -4 Pa的条件下，通过蒸气定位将其形成为光吸收层3，并且气相沉积为 3-5 A / S。 通过气相沉积形成记录层4是通过将作为待蒸镀的基板的光吸收层3保持在环境温度下进行的。 不加热。

公开(公告)号：JPS5916147A

公开(公告)日：1984-01-27

申请号：JP12626782

申请日：1982-07-20

Applicant: Sony Corp

Inventor： ISHIMOTO HIKARI ,  KAWAKADO KOUICHI ,  ASAI NOBUTOSHI ,  SETO NOBUYOSHI

IPC: G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B27/36

CPC classification number: G11B27/36 ,  G11B7/004

Abstract: PURPOSE:To measure a sample to be used as an optical recording material, for high-density and high-speed recording, by recording on the sample by a recording laser light, and measuring optical change of the recording part of the sample before and after this recording by the intermittent irradiation of a measuring laser light. CONSTITUTION:An Ar laser 7 turns on and off a recording laser light 2 by an acoustooptical modulator 8 to focus the pulse light onto a sample 1 through an objec lens 6. In respect to a laser light source 9 of a measuring laser light 4, for example, an He-Ne laser (polarized in the vertical direction) is converted to a strobe light by a chopper 10 and is focused on the same position as the recording laser light on the surface of the sample to be measured. The measuring laser light reflected on the surface of the sample 1 is transmitted through a color filter 18, which cuts the reflected light of the recording laser, and is focused on a quartered photodiode 19 to measure the quantity of total reflected light, the focus, and the shape of the spot. The sample 1 is fixed by a vacuum chuck and is moved intermittently in, for example, 1mum units by a stepping motor. These operations are controlled by a microcomputer 20, and measured results are detected immediately after recording.

Abstract translation: 目的：测量用作光学记录材料的样品，用于高密度和高速记录，通过记录激光在样品上记录，并测量样品前后记录部分的光学变化 通过间歇照射测量激光的这种记录。 构成：Ar + +激光器7通过声光调制器8打开和关闭记录激光2，以通过物镜6将脉冲光聚焦到样品1上。对于测量激光器的激光光源9 光4，例如，通过斩波器10将He-Ne激光器（在垂直方向上极化）转换成闪光灯，并且聚焦在与要测量的样品的表面上的记录激光相同的位置。 在样品1的表面上反射的测量激光透射通过滤色器18，滤色器18切割记录激光的反射光，并聚焦在四分之一光电二极管19上，以测量总反射光的量，焦点， 和斑点的形状。 样品1由真空吸盘固定，并通过步进电机以例如1mum的单位间歇地移动。 这些操作由微计算机20控制，并且在记录之后立即检测测量结果。