公开(公告)号：JP2007293955A

公开(公告)日：2007-11-08

申请号：JP2006118368

申请日：2006-04-21

Applicant: Sony Corp ,  ソニー株式会社

Inventor： YAMADA TAKATOSHI ,  KAWAKITA SATOSHI ,  SATO HITOSHI ,  SUGANO TAKASHI ,  AIBA MOTOO

IPC: G11B7/135 ,  G02B5/18

Abstract: PROBLEM TO BE SOLVED: To provide a diffraction element 20 capable of showing satisfactory characteristics. SOLUTION: A cover layer 20D of the diffraction element 20 is constituted of a cover lower layer 20Du made of a second UV cured resin 100B and joined to a diffraction pattern PTc for a CD and a cover upper layer 20Do made of a third UV cured resin 100C and joined to the cover lower layer 20Du. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供能够显示令人满意的特性的衍射元件20。 解决方案：衍射元件20的覆盖层20D由第二UV固化树脂100B制成的盖下层20Du构成，并连接到用于CD的衍射图案PTc和由第三层制成的盖上层20Do UV固化树脂100C，并与盖下层20Du接合。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007293954A

公开(公告)日：2007-11-08

申请号：JP2006118367

申请日：2006-04-21

Applicant: Sony Corp ,  ソニー株式会社

Inventor： AIBA MOTOO ,  YAMADA TAKATOSHI ,  KAWAKITA SATOSHI ,  SATO HITOSHI ,  SUGANO TAKASHI

IPC: G11B7/135 ,  G02B5/18

Abstract: PROBLEM TO BE SOLVED: To obtain a diffraction element which has excellent characteristics. SOLUTION: The diffraction element 20 is built by forming the surface of the cover layer 20D to cancel the wavefront aberrations generated at the first air boundary IFa. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：获得具有优异特性的衍射元件。 解决方案：通过形成覆盖层20D的表面来构建衍射元件20，以消除在第一空气边界IFa处产生的波前像差。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JPH0750004A

公开(公告)日：1995-02-21

申请号：JP33625493

申请日：1993-12-28

Applicant: SONY CORP

Inventor： SAITO TADASHI ,  SUGANO TAKASHI ,  TAKAHASHI SHINJI ,  WATANABE TOSHINOBU ,  SAGAWA HIDETO ,  KOIKE YASUHARU

IPC: G11B5/127 ,  G11B5/187 ,  G11B5/23

Abstract: PURPOSE:To reduce a leaking magnetic field by providing track-width regulating groove 5 for regulating the widths of the tracks of magnetic gaps on one-main- surfaces of magnetic core substrares comprising oxide magnetic material, forming magnetic metal thin films thereon, and thereafter machining the surfaces of the thin films as mirror surfaces. CONSTITUTION:Magnetic metal thin films 5 and 6 are formed on the facing surfaces of a magnetic core substrates 3 and 4 comprising oxide magnetic material such as ferrite in a pair of magnetic core half bodies 1 and 2. The half bodies 1 and 2 are formed as a bonded unitary body so that the thin films 5 and 6 are made to face. Between the facing surface, a magnetic gap g1, which is a front gap, and a magnetic gap g2, which is the back gap that is not operated for recording and reproducing, are formed. Gap forming surfaces 3a and 4a, which are in parallel with the gaps g1 and g2, are formed at the positions corresponding to the gaps g1 and g2. Track-width regulating grooves 7 and 8 for regulating the track widths of the gaps g1 and g2 are provided at both ends. Since the widths of the forming surfaces are regulated, the widths of the facing surfaces of the thin films 5 and 6 are also regulated. Therefore, a track width Tw of the track is regulated.

公开(公告)号：JPH0536038A

公开(公告)日：1993-02-12

申请号：JP19002691

申请日：1991-07-30

Applicant: SONY CORP

Inventor： OGATA SEIICHI ,  SUGANO TAKASHI

IPC: G11B5/53 ,  G11B5/592

Abstract: PURPOSE:To enable the recording/reproducing of a high quality mode and a long time mode by one magnetic head. CONSTITUTION:A pair of magnetic heads 57 and 58 equipped with magnetic gaps (g)1 and (g)2 having azimuth angles in different directions, are provided on the same head base 56 oppositely in a head traveling direction. The recording and reproduction can be operated to a magnetic recording medium at the same time by those magnetic heads 57 and 58. At least one magnetic head 57 is attached through a piezoelectric element 86 whose shape is changed due to impressing a voltage to the head base 56, and the track pitches of the pair of magnetic heads 57 and 58 are varied by this piezoelectric element 86.

公开(公告)号：JPH0536015A

公开(公告)日：1993-02-12

申请号：JP20887291

申请日：1991-07-26

Applicant: SONY CORP

Inventor： KOBAYASHI TOMIO ,  OGATA SEIICHI ,  SAITO TADASHI ,  SUGANO TAKASHI ,  URAI AKIRA ,  MURAKAMI AKIRA ,  KOSAKA MASAYA ,  KOJIMA HIDEAKI

IPC: G11B5/23

Abstract: PURPOSE:To improve the magnetic permeability of ferromagnetic metallic thin films and to simultaneously improve productivity at the time of forming the ferromagnetic metallic thin films. CONSTITUTION:A pair of magnetic cores 58, 59 are disposed to face each other and the ferromagnetic metallic thin films 61 are disposed on the opposite surfaces of at least one of the magnetic cores 59. The ferromagnetic metallic thin films 61c continuing in the track width direction from a magnetic gap part are parallel with a magnetic gap (g).

公开(公告)号：JPH09219008A

公开(公告)日：1997-08-19

申请号：JP2514396

申请日：1996-02-13

Applicant: SONY CORP

Inventor： OGATA SEIICHI ,  SUGANO TAKASHI ,  TAKAHASHI HISAMI

IPC: G11B5/02 ,  G11B5/127 ,  G11B5/23

Abstract: PROBLEM TO BE SOLVED: To suppress the deterioration in C/N occurring in the occurrence of an adjacent erasure and to enable mass production by varying the butt surface widths of the core half bodies of a magnetic head element and disposing an azimuth angle within the opening angle of a magnetic gap. SOLUTION: The magnetic core of the magnetic head element is formed by butting the magnetic core half bodies 1, 2 against each other by the butt surfaces 1a, 2a of the width different from each other and joining the surfaces. The angle formed by the normal of the bisector of the opening angle β in the one end (p) of the magnetic gap (g) and the longitudinal direction M of a magnetic tape is increased to allow the azimuth angle θ to exist within the opening angle β. The magnetic head device of a metal-in gap is constituted by disposing the magnetic head element obtd. in such a manner. The equivalence to the case where the butt surface widths 1a, 2a of the magnetic core half bodies 1, 2 facing each other of the respective magnetic head elements are exactly aligned is thereby attained. Then, the amt. of the adjacent erasure which occurs is lowered to a negligible level and the easy and sure mass production is made possible.

公开(公告)号：JPH0684128A

公开(公告)日：1994-03-25

申请号：JP26052492

申请日：1992-09-04

Applicant: SONY CORP

Inventor： SUGANO TAKASHI ,  SAITO TADASHI

IPC: G11B5/127 ,  G11B5/187 ,  G11B5/23

Abstract: PURPOSE:To obtain a magnetic head which enables high density recording and generates high reproducing outputs. CONSTITUTION:Ferromagnetic metallic thin films 3, 4 as a second magnetic body are arranged at the face where magnetic cores 1, 2 of oxide magnetic bodies butt against each other, thereby to constitute magnetic core half bodies 11, 12. The butting width of the metallic thin films 3, 4 is regulated by regulating notches 1b, 2b. The magnetic bodies butt each other also at the outside of the regulating notches 1b, 2b. Both end parts of a sliding face are processed to be rails along the sliding direction of a magnetic recording medium, and therefore the touching width to the magnetic recording medium is regulated. The butting width of the ferromagnetic metallic thin films 3, 4, namely, the track width Tw is set to be smaller than 25mum, and the butting width A of the magnetic bodies at the outside of the regulating notches is respectively not larger than 50mum.

公开(公告)号：JPH0660318A

公开(公告)日：1994-03-04

申请号：JP22528192

申请日：1992-07-31

Applicant: SONY CORP

Inventor： SAITO TADASHI ,  OGATA SEIICHI ,  SUGANO TAKASHI ,  TAKAHASHI SHINJI ,  URAI AKIRA ,  SATO TAKASHI ,  KOBAYASHI TOMIO

IPC: G11B5/127 ,  G11B5/187

Abstract: PURPOSE:To obtain a magnetic head superior in wear resistance by approximately linearly forming metallic magnetic films at an angle to the magnetic head running direction. CONSTITUTION:Magnetic core half bodies I and II where a metallic magnetic film 1 is interposed between a pair of guard materials 2 and 3 are butted, and a magnetic gap (g) is constituted between butting faces. Winding grooves 4 and 5 are formed in core half bodies I and II respectively, and coils are wound around these grooves to supply/take out signals to/from a head. Metallic magnetic films 1 are multilayered films where thin films made of a high-permeability material like 'Sendust(R)' are laminated with an insulating film between them, and guard materials 2 and 3 are made of ferrite. End faces on the sides opposite to the gap (g) forming sides of metallic magnetic films 1 are so cut that they slightly stand back from side faces of magnetic core half bodies I and II, and end parts are filled with glass 8. Since the extension direction of magnetic films 1 is made nonparallel with the tape sliding direction of the magnetic head, a proportion occupied by the magnetic films 1 on the tape slide face is considerably reduced.

公开(公告)号：JPH05151515A

公开(公告)日：1993-06-18

申请号：JP31696691

申请日：1991-11-29

Applicant: SONY CORP

Inventor： TERASAWA AKIHIKO ,  OGATA SEIICHI ,  SAITO TADASHI ,  SUGANO TAKASHI ,  TAKAHASHI SHINJI ,  URAI AKIRA ,  MURAKAMI AKIRA ,  KOBAYASHI TOMIO

IPC: G11B5/127

Abstract: PURPOSE:To prevent the peeling of magnetic metallic films and to enhance reliability by fusing the glass for joining substrates facing each other at the glass thickness varying partially. CONSTITUTION:The magnetic metallic films 2 are fused and formed on at least one of the substrates 3 and 4. These substrates 3 and 4 hold these magnetic metallic films 3 and are joined by the glass 5. The substrates 3 and 4 consist of core half bodies 1A and 1B. These cores 1A and 1B are so joined as to form a working magnetic gap g between the end faces of the magnetic metallic films 2 by disposing these end faces opposite to each other. The joint of the glass 5 is formed between the substrates 3 and 4 over the entire surface thereof and at partly different thicknesses. At least a part of the glass layer is penetrated and packed to the substrates 3 and 4 by the capillarity after the superposition of the substrates. As a result, the two substrates are securely joined and the generation of a spacing therebetween is obviated. The fluctuations in the recording and reproducing characteristics and frequency characteristics of the magnetic head and the generation of defective products are prevented and the reliability is improved.

公开(公告)号：JP2008158183A

公开(公告)日：2008-07-10

申请号：JP2006345862

申请日：2006-12-22

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KAWAKITA SATOSHI ,  YAMADA TAKATOSHI ,  SATO HITOSHI ,  SUGANO TAKASHI ,  AIBA MOTOO

IPC: G02B5/18 ,  B29C39/10 ,  B29L9/00 ,  B29L11/00 ,  G11B7/135 ,  G11B7/22

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of optical element capable of materializing a diffraction element exhibiting a satisfactory characteristic.
SOLUTION: When a diffraction pattern layer 20E is formed by a replica method, a first UV-curing resin 100A is irradiated with UV rays which allow curing reaction to quickly proceed, even though there is a risk of degrading the resin by long-time irradiation over a short curing time, whereby a most part of functional groups of the first UV-curable resin 100A are reacted effectively, and thereafter, the first UV-curing resin 100A is irradiated with an irradiation light, which has a low speed of curing reaction although there is a small risk of degrading the resin because of a low energy level of the resin over an irradiation time longer than the curing time, whereby the functional groups remaining in the first UV-curable resin 100A, of which the speed of curing reaction is left to be small because of disappearance of the fluidity, is made to substantially completely react taking a long time.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供能够实现具有令人满意的特性的衍射元件的光学元件的制造方法。 解决方案：当通过复制方法形成衍射图案层20E时，第一UV固化树脂100A被照射紫外线，其允许固化反应快速进行，即使存在长时间降解树脂的风险 在固化时间短的同时照射，由此第一UV固化树脂100A的大部分官能团反应有效，然后用第一UV固化树脂100A照射具有低速的照射光 虽然由于在比固化时间长的照射时间树脂的能量水平低的情况下树脂降解的风险很小，由此残留在第一UV固化树脂100A中的官能团，其速度 的固化反应由于流动性的消失而变小，使其长时间基本上完全反应。 版权所有（C）2008，JPO＆INPIT