公开(公告)号：JP2002288819A

公开(公告)日：2002-10-04

申请号：JP2001090932

申请日：2001-03-27

Applicant: SONY CORP

Inventor： SATO SATOSHI

IPC: G11B5/73 ,  G11B5/738 ,  G11B5/78

Abstract: PROBLEM TO BE SOLVED: To enhance dimensional stability of a magnetic recording medium. SOLUTION: The creep compliance in the longitudinal direction of a non- magnetic support 1 which constitutes a magnetic recording medium 10 is made to be 0.3 Gpa or less, and the coefficient of thermal shrinkage after storage under a condition for 30 minutes at 100 deg.C is specified to be 1.0% or less in the longitudinal direction and 1.0% or less in the width direction.

公开(公告)号：JP2002237027A

公开(公告)日：2002-08-23

申请号：JP2001032793

申请日：2001-02-08

Applicant: SONY CORP

Inventor： SATO SATOSHI

IPC: B32B9/00 ,  B32B15/08 ,  B32B15/09 ,  B32B27/36 ,  G11B5/73 ,  G11B5/735 ,  G11B5/738 ,  G11B5/78

Abstract: PROBLEM TO BE SOLVED: To enhance dimensional stability of a magnetic recording medium. SOLUTION: In the magnetic recording medium having a belt-like non- magnetic supporting body consisting of a polyester based plastic film, a lower layer formed on a principal surface of the non-magnetic supporting body and a magnetic layer formed on the lower layer, a reinforcing film consisting of metal, semi-metal, alloy, oxide of them or composite of them and having 20-1,000 nm thickness is formed on at least one surface of the non-magnetic supporting body and the non-magnetic supporting body wherein the reinforcing film is formed has

公开(公告)号：JP2002150525A

公开(公告)日：2002-05-24

申请号：JP2000343066

申请日：2000-11-10

Applicant: SONY CORP

Inventor： SATO SATOSHI

IPC: G11B5/64 ,  G11B5/65 ,  G11B5/73

Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording medium capable of suppressing the occurrence of a dropout within a permissible range. SOLUTION: The magnetic recording medium having a film-like nonmagnetic base 1 and a magnetic layer 2 consisting of a magnetic metallic thin film disposed on the front surface side of the nonmagnetic base 1 is characterized in that traveling surface coarse projections 6 of >=500 pieces/nm in height at a traveling surface 3a (i.e., the surface on the magnetic layer 2 side) on which a magnetic head slides are >=250 pieces/mm2. The surface 1a on the magnetic layer 2 side of the nonmagnetic base 1 is provided with the fine surface projections of 10 to 50 nm in height within a range from 1,000,000 to 100,000,000 pieces/mm2. When the nonmagnetic base 1 is composed of a polyester film as a chief material, the projections occurring in the oligomer deposited on the surface on the magnetic layer 2 side of the polyester film are included as the traveling surface coarse projections 6.

公开(公告)号：JP2002140809A

公开(公告)日：2002-05-17

申请号：JP2000335529

申请日：2000-11-02

Applicant: SONY CORP

Inventor： SATO SATOSHI

IPC: G11B5/73

Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording medium having satisfactory output characteristics, while the handling of a non-magnetic substrate made to be a thin film of 2.0-5.0 μm thickness at the time of manufacture is satisfactorily maintained. SOLUTION: The magnetic recording medium provided with the film shaped non-magnetic substrate 1 formed by using aromatic polyamide as a main component and a magnetic layer 2 provided on the surface A of the non-magnetic substrate 1 and consisting of a metallic magnetic material is characterized in that the non-magnetic substrate 1 has 2.0 μm-5.0 μm film thickness and a back surface B opposite to the surface A on which the magnetic layer 2 is provided has 3 nm-8 nm centerline average surface roughness and 30 nm-300 nm ten-point average surface roughness. The non-magnetic substrate 1 consists of a first layer 11 on the side of the back surface B and a second layer 12 on the side of the magnetic layer 2 and the ratio (t2/t1) of the film thickness t2 of the second layer 12 to the thickness t1 of the first layer 11 is specified to >=3/2.

公开(公告)号：JP2000285432A

公开(公告)日：2000-10-13

申请号：JP8908299

申请日：1999-03-30

Applicant: SONY CORP

Inventor： SATO SATOSHI ,  MATSUMURA SHINICHI

IPC: G11B5/66 ,  B32B27/00 ,  B32B27/20 ,  B32B27/34 ,  C08J5/18 ,  C09D5/23 ,  C09D7/12 ,  C09D201/00 ,  G11B5/64 ,  G11B5/673 ,  G11B5/73 ,  G11B5/733

Abstract: PROBLEM TO BE SOLVED: To ensure both good electromagnetic conversion characteristics and durability even when an aromatic polyamide film of 5 mm thick or less is employed. SOLUTION: The magnetic recording medium is formed by providing a magnetic layer 2 comprising a thin metallic magnetic film on a nonmagnetic support 1A comprising an aromatic polyamide film of 5.0 μm thick or less. A continuous coating 1B of 100 nm thick or less principally comprising a water soluble polymer and fine particles having mean grain of 5-200 nm is formed at least on one side of the nonmagnetic support 1A. The fine particles C form fine protrusions on the surface at a frequency of 5,000,000-50,000,000/mm2 wherein the height of the protrusions is 10-50 nm and the ratio t/d between the thickness t of the continuous coating 1B and the mean grain size d of the fine particles dis in the range of 0.1-4. The nonmagnetic support 1A has Young's modulus of 1000 kg/mm2 or above in the longitudinal direction and Young's modulus of 1300 kg/mm2 or above in the widthwise direction.

公开(公告)号：JPH10293916A

公开(公告)日：1998-11-04

申请号：JP10051097

申请日：1997-04-17

Applicant: SONY CORP

Inventor： SATO SATOSHI ,  MATSUMURA SHINICHI ,  ARIZAKA YUICHI

IPC: G11B5/66 ,  G11B5/64 ,  G11B5/73 ,  G11B5/733

Abstract: PROBLEM TO BE SOLVED: To cope with both excellent electromagnetic conversion characteristic and durability and to provide a metallic thin film type magnetic recording medium by making an aromatic class polyamide film forming projections on its surface a non-magnetic support body and specifying a relation between heights and frequencies of its surface projections. SOLUTION: In the metallic thin film magnetic recording medium, the non- magnetic support body consists of the aromatic class polyamide film forming the projections on its surface formed with a ferromagnetic metallic thin film, and is decided so that the projections existing within the range of height 10-40 nm among the projections are satisfied with the relation when the height (nm) of the projection is defined H, and projection frequency (ten thousand pieces/mm ) is Y. By controlling the surface shape of the non-magnetic support body in such a manner, both excellent electromagnetic conversion characteristic and durability are coped with each other, and further, by using the aromatic class polyamide film with high strength as the non-magnetic support body, its thickness is thinned.

公开(公告)号：JPH1049852A

公开(公告)日：1998-02-20

申请号：JP20053496

申请日：1996-07-30

Applicant: SONY CORP

Inventor： MATSUMURA SHINICHI ,  SATO SATOSHI

IPC: C08J5/18 ,  B32B27/34 ,  G11B5/66 ,  G11B5/73 ,  G11B5/738

Abstract: PROBLEM TO BE SOLVED: To reduce folding, wrinkle and deformation of a recording medium by utilizing an aromatic polyamide film in the thickness of 10μm or less, Young' s modulus in the vertical direction of 1000k/mm or more and Young's modulus in the width direction of 1300kg/mm or more. SOLUTION: In the magnetic recording medium 120, a magnetic layer 3 is formed on a non-magnetic supporting material 2 composed of an aromatic polyamide film, and a back layer 4 is formed on the rear surface side thereof. The automatic polyamide film used for the non-magnetic supporting material 2 is formed preferably of an amide resin or a polyamide resin incorporating a copolymer thereof.

公开(公告)号：JPH09138929A

公开(公告)日：1997-05-27

申请号：JP29695795

申请日：1995-11-15

Applicant: SONY CORP

Inventor： MATSUMURA SHINICHI ,  SATO SATOSHI

IPC: G11B5/66 ,  G11B5/738

Abstract: PROBLEM TO BE SOLVED: To make the size and shape of surface projections formed on a nonmagnetic supporting body controlled and excellent electromagnetic conversion characteristic and to ensure good traveling property ensured in a balanced form. SOLUTION: The non-magnetic supporting body constituted by forming substrate layer 22 on a base film 21 and having the refractive index in the thickness direction of >=1.49 is used. The projections caused by a filler 25 added into the base film 21 and the projections caused by fine particulates 26 contained in the substrate 22 are formed on the surface on which a magnetic metal thin film 23 of the non-magnetic supporting body is formed. Thus, the shape of the projection mentioned above is reflected on the surface of the magnetic metal thin film 23 formed on the non-magnetic supporting body.

公开(公告)号：JPH04336899A

公开(公告)日：1992-11-25

申请号：JP10801091

申请日：1991-05-14

Applicant: SONY CORP

Inventor： SATO SATOSHI ,  ICHIGAYA KOJI

IPC: H04N17/04

Abstract: PURPOSE:To check whether or not the device is in correct operation by comparing and calculating light intensity data for each primary color detected by photo sensors having a directivity sensitivity with a single peak arranged to a color CRT opposite to each other so as to calculate mis-convergence. CONSTITUTION:A photo sensor 4 arranged opposite to a tube screen of a color CRT 1 detects light intensity of a brightness pattern and the light intensity data is fetched in a memory 7 via an amplifier 5 and an A/D converter 6. A CPU 8 compares and calculates the light intensity data for each luminance ray pattern to calculate misconvergence and displays the result on a display section 9. When the convergence measurement device A itself is normal, the mis-convergence is zero.

公开(公告)号：JP2009093136A

公开(公告)日：2009-04-30

申请号：JP2007341237

申请日：2007-12-28

Applicant: Sony Corp ,  ソニー株式会社

Inventor： SHINKAI SHOGO ,  OTA EIJI ,  OMURA TARO ,  HARIMA TATSUYA ,  KUDO YASUYUKI ,  ODAGIRI HIROKAZU ,  ABIKO TORU ,  SATO SATOSHI ,  YO TAKUCHU ,  HORII AKIHIRO ,  MIZUNO YUTAKA

IPC: G02B5/02 ,  F21V3/00 ,  F21V5/00 ,  F21V5/02 ,  G02F1/1335

CPC classification number: G02B5/045 ,  G02B5/02 ,  G02B6/0053 ,  G02B6/0065 ,  G02B27/285 ,  G02F1/133604 ,  G02F1/133606 ,  G02F1/133608 ,  G02F1/133611 ,  G02F2001/133607 ,  G02F2201/54 ,  Y10T428/1328

Abstract: PROBLEM TO BE SOLVED: To provide an optical package, preventing creases, deflection, and warp, and made thinner. SOLUTION: This optical packaged includes: a stack 10 in which a diffusion plate 11, a diffusion sheet 12, a lens film 13 and a reflective polarizing sheet 14 are stacked; and a packaging film 20 covering the stack 10. The packaging film 20 is formed of material having at least either heat contraction property or expandable and contractible property, and provided with a light incident side film 21 and a light emitting side film 22 which cover the stack 10 in the state where contraction force is applied. The packaging film has a light source image dividing part 23 in a light incident region 21A where the light from a light source enters when the light source is disposed on one surface side of the optical package 20. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供光学封装，防止折痕，偏转和翘曲，并变薄。 解决方案：该光学封装包括：叠层10，其中堆叠扩散板11，扩散片12，透镜膜13和反射偏光片14; 以及覆盖叠层10的包装膜20.包装膜20由具有至少热收缩性或可膨胀和收缩性的材料形成，并且设置有光入射侧膜21和发光侧膜22， 在施加收缩力的状态下的叠层10。 当光源设置在光学封装20的一个表面侧上时，包装膜具有在光入射区域21A中的来自光源的光进入的光源图像分割部分23.权利要求（C）2009 ，JPO＆INPIT