公开(公告)号：JP2001126255A

公开(公告)日：2001-05-11

申请号：JP30131299

申请日：1999-10-22

Applicant: SONY CORP

Inventor： IWAMURA TAKASHI ,  OYAMADA MITSUAKI ,  TAMURA SHINICHIRO ,  OGAWA HIROSHI

IPC: G11B7/0045

Abstract: PROBLEM TO BE SOLVED: To provide optical recording method and device optically recording the prescribed data for a one side reproducing double layer structural DRAW type recording medium, preventing a signal recorded on a second recording layer relatively far from particularly a light incident side from deteriorating and record-able information density from lowering, and attaining perfect reproducing compatibility and satisfying a request of DVD authoring. SOLUTION: First of all, a second recording layer recording part RL2-D of the first half of the inversion recording data INV-D is recorded on a second recording layer RL2 placed far from the read-out surface of the optical disk (step S5), and thereafter, a first recording layer part RL1-D of the second half of the inversion recording data INV-D is recorded on a first recording layer RL1 placed near to the read-out surface of the optical disk (step S10) for the optical disk having two layers of the first recording layer RL1 and the second recording layer RL2.

公开(公告)号：JP2000339766A

公开(公告)日：2000-12-08

申请号：JP14398599

申请日：1999-05-24

Applicant: SONY CORP

Inventor： IWAMURA TAKASHI ,  OYAMADA MITSUAKI ,  TAMURA SHINICHIRO

IPC: G11B7/24 ,  G11B7/00 ,  G11B7/26

Abstract: PROBLEM TO BE SOLVED: To provide an optical recording medium which has recording capacity equal to two-layer DVD(digital video disk), reproducing compatibility with a DVD reproducer, and a reproduction exclusive region and a recording region for user. SOLUTION: The optical disk 1 is provided with a first information recording body 3 in which a first information recording part 2 consisting of the reproduction exclusive region is formed on one surface of the first optically transparent substrate and a second information recording body 5 in which a second information recording part 4 consisting of the reproduction exclusive region and a region capable of DRAW is formed on one surface of the second substrate. Therein, the first information recording body and the second information recording body are combined through an optically transparent adhesive layer 6 while facing the sides on which the first or second information recording body is formed to each other, a laser beam is made incident for the side of the first substrate and, thereby, the recording and reproducing of information is optically performed.

公开(公告)号：JPH112821A

公开(公告)日：1999-01-06

申请号：JP15675997

申请日：1997-06-13

Applicant: SONY CORP

Inventor： TAKANASHI HIDEHIKO ,  YAMAZAKI TAKESHI ,  IWAMURA TAKASHI

IPC: G02F1/1339 ,  G02F1/1337

Abstract: PROBLEM TO BE SOLVED: To obtain the inexpensive, high-contrast liquid crystal display element which has a specific cell gap formed uniformly to high precision and is easily increased in area by setting the properties of a liquid orientation control layer and the properties of spacers to specific conditions. SOLUTION: The liquid crystal element 1 is constituted by arranging a couple of base bodies 1A and 1B, having electrodes 3a and 3b and liquid crystal orientation control layers 4a and 4b provided in this order on substrates 2a and 2b, opposite each other across a specific gap (d) on the sides of the liquid crystal orientation control layers 4a and 4b, arranging liquid crystal 6 in the gap (d), and maintaining the gap (d) by spacers 5. Then the K value of the spacers 5 and the Young's modulus E of the liquid crystal orientation control layers 4a and 4b are so related that 1>=K/E>=0.1. Here, K=(3/2 )F(S .R ); and F is a compressing force, S a compressive deformation quantity, and S is the radius of the spacers 5 regarded as spheres. Consequently, the gap (d) between the orientation films can be maintained against external pressure.

公开(公告)号：JPH09127530A

公开(公告)日：1997-05-16

申请号：JP30507895

申请日：1995-10-30

Applicant: SONY CORP

Inventor： YASUDA AKIO ,  IWAMURA TAKASHI ,  MATSUI ERIKO ,  ENDO HIROAKI

IPC: G02F1/1343 ,  G02F1/133 ,  G09G3/36

Abstract: PROBLEM TO BE SOLVED: To increase a driving margin and a temperature margin and enable an analog gradational display of practical level without making a driving circuit complicated or increasing the cost by suppressing the number of analog gradations low. SOLUTION: A display which uses liquid crystal(FLC) is so constituted as to make a display of >=4 gradations in one pixel PX by arranging the FLC between a couple of substrates 1a and 1b having electrodes 22a and 22b on their opposite surface sides. For each pixel PX, the data electrode 22a is divided into an electrode A and an electrode B, whose division area ratio is controlled corresponding to the number of display gradations. When this FLC display is driven, the divided electrodes A and B are driven independently of each other.

公开(公告)号：JPH07296420A

公开(公告)日：1995-11-10

申请号：JP8824594

申请日：1994-04-26

Applicant: SONY CORP

Inventor： IWAMURA TAKASHI ,  KIJIMA YASUNORI ,  ASAI NOBUTOSHI

IPC: G11B7/24

Abstract: PURPOSE:To make it possible to store the recording information quantity of about 4 times the present recording information quantity to an optical recording medium of the same size without subjecting the device side to a drastic change, such as shortening of the wavelength of reproducing light, increasing of the numerical aperture NA of a focusing lens and changing of a signal demodulation system. CONSTITUTION:At least a saturable absorbent dyestuff-contg. layer 2 formed by a vacuum thin film forming method and a reflection layer 4 are formed on a light transmissive substrate 1 formed with the recording patterns corresponding to information signals as rugged 1a, 1b shapes. Further, a short-wavelength shift layer 3 which shifts the minimal point of the light reflection spectra of the optical recording medium to a short wavelength side is disposed between the saturable absorbent dyestuff-contg. layer 2 and the reflection layer 4. As a result, the recording patterns inscribed on the substrate 1 are correctly traced on the saturable absorbent dyestuff-contg. layer 2 and the reflection layer 4 and the reflectivity is confined within an adequate rate. Then, the optical recording medium exhibits excellent ultra-definition and good reproduced signals are obtd. from the fine recording patterns formed with micropits at a period shorter than the diffraction threshold lambda/2NA of a reproducing optical system.

公开(公告)号：JPH06295469A

公开(公告)日：1994-10-21

申请号：JP8210993

申请日：1993-04-08

Applicant: SONY CORP

Inventor： IWAMURA TAKASHI ,  MATSUZAWA YOKO ,  TAMURA SHINICHIRO

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

Abstract: PURPOSE:To provide an optical recording medium capable of nondestructive readout and excellent in reliability and high-speed recording and reproducing characteristics. CONSTITUTION:This optical recording medium for optically recording and reproducing information has a recording layer 2 on the substrate 1. Recording is carried out in the recording layer 2 with light having shorter wavelength than the wavelength of light for reproduction. The thickness (d) of the recording layer 2 satisfies d =2.55 and the absolute value of the imaginary part is =1.0. A cyanine dye or a porphyrin compd. may be used as the org. dye and blue laser beam recording is enabled by using the porphyrin compd.

公开(公告)号：JPH06219053A

公开(公告)日：1994-08-09

申请号：JP2724593

申请日：1993-01-22

Applicant: SONY CORP

Inventor： KIJIMA YASUNORI ,  IWAMURA TAKASHI ,  TAMURA SHINICHIRO ,  SETO NOBUYOSHI

IPC: B41M5/26 ,  G11B7/00 ,  G11B7/003 ,  G11B7/24 ,  G11B7/244

Abstract: PURPOSE:To obtain an optical recording medium enabling high density recording and reproduction by successively providing a recording layer consisting of a light absorbing substance and a polymeric compd. having specific melt viscosity and a high glass transition point and a protective layer on a support. CONSTITUTION:A recording layer 3 and a protective layer 4 are successively laminated to one surface of a flexible base film 2 and a back coat layer 5 is laminated to the other surface of the base film 2 to produce an optical recording medium 1. The recording layer 3 is formed from a light absorbing substance and a polymeric compd. and it is necessary that the relation between the melt viscosity MV (pores) and glass transition point Tg( deg.C) of the polymeric compd. satisfies 0.023log(MV)+0.002Tg

公开(公告)号：JPH0573958A

公开(公告)日：1993-03-26

申请号：JP23501191

申请日：1991-09-13

Applicant: SONY CORP

Inventor： ASAI NOBUTOSHI ,  IWAMURA TAKASHI

IPC: G11B7/00 ,  G11B7/003 ,  G11B7/0045 ,  G11B7/24 ,  G11B7/254 ,  G11B7/257

Abstract: PURPOSE:To obtain the tape-shaped optical recording medium which can form high-quality pits for pit edge recording with a laser beam of a specified power. CONSTITUTION:A protective film 3 consisting of a fluorine polymer and having 200+ or -20nm film thickness is formed on the recording layer 2 of the optical recording medium which is constituted by forming the recording layer 2 to allow optical recording and/or reproducing of information on a flexible substrate 1 and subjecting this recording layer 2 to pit edge recording.

公开(公告)号：JP2013242939A

公开(公告)日：2013-12-05

申请号：JP2012115944

申请日：2012-05-21

Applicant: Sony Corp ,  ソニー株式会社

Inventor： OTA AKIRA ,  OYAMADA MITSUAKI ,  TAKAYANAGI KENJI ,  UEDA DAISUKE ,  IWAMURA TAKASHI

IPC: G11B7/244 ,  B41M5/26 ,  G11B7/24035

Abstract: PROBLEM TO BE SOLVED: To provide a recording layer which can improve the recording density and can also exploit the effect of an additive for improving the recording sensitivity, and an optical information recording medium including the same.SOLUTION: An optical information recording medium includes a recording layer that foams by absorption of light and can form a cavity as a recording mark. The recording layer includes cellulose nitrate and an additive that absorbs light to generate heat.

Abstract translation: 要解决的问题：提供能够提高记录密度并且还可以利用添加剂用于提高记录灵敏度的效果的记录层，以及包括其的光学信息记录介质。解决方案：光学信息记录介质包括 记录层，其通过吸收光而发泡，并且可以形成作为记录标记的空腔。 记录层包括硝酸纤维素和吸收光以产生热量的添加剂。

公开(公告)号：JP2012018703A

公开(公告)日：2012-01-26

申请号：JP2010153553

申请日：2010-07-06

Applicant: Sony Corp ,  ソニー株式会社

Inventor： OTA AKIRA ,  IWAMURA TAKASHI ,  OYAMADA MITSUAKI ,  UEDA DAISUKE

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

CPC classification number: G11B7/24035 ,  G11B7/00452 ,  G11B7/2405 ,  G11B7/245 ,  G11B2007/0009 ,  G11B2007/00457 ,  Y10T428/24273

Abstract: PROBLEM TO BE SOLVED: To improve recording characteristics of an optical recording medium for forming a hole mark on a bulk recording layer.SOLUTION: A recording layer is formed by an organic material (thermoplastic resin and thermosetting resin) having an oxygen element ratio of 9.1% or more. For example, the material is polyethersulfone, polyimide, polyethylene and the like. Alternatively, a recording layer is formed by a material obtained by adding a low-molecular-weight compound into a resin in which the oxygen element ratio after mixing is 9.1% or more.

Abstract translation: 要解决的问题：提高用于在大量记录层上形成孔标记的光记录介质的记录特性。 解决方案：记录层由氧元素比为9.1％以上的有机材料（热塑性树脂和热固性树脂）形成。 例如，该材料是聚醚砜，聚酰亚胺，聚乙烯等。 或者，通过将低分子化合物添加到混合后的氧元素比为9.1％以上的树脂中而形成记录层。 版权所有（C）2012，JPO＆INPIT