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1. 发明授权

US06624973B2 Magnetic head for floppy disk drive and hard disk drive 失效
标题翻译：磁头用于软盘驱动器和硬盘驱动器
公开(公告)号：US06624973B2
公开(公告)日：2003-09-23
申请号：US09825845
申请日：2001-04-05
申请人： Motoji Egawa , Shigeyuki Oishi
发明人： Motoji Egawa , Shigeyuki Oishi
IPC分类号： G11B511
CPC分类号： G11B5/10 , G11B5/102 , G11B5/105
摘要： A magnetic head that is excellently adapted to a magnetic core reduced in thickness. When a magnetic core which is reduced in thickness for adaptation to a high recording density is inserted in an opening of a size conventionally formed in a magnetic head of a standard recording density type, a spacer made of a material equivalent or identical to that of a slider is inserted between the magnetic core and the inner wall of the opening. The magnetic core is positioned by means of projections formed on the inner wall of the opening and the spacer. Then, glass as a sealing material is poured into gaps formed in the opening by the magnetic core, the inner wall of the opening and the spacer. The inserted spacer reduces a space volume for the glass to be poured. Further, since the spacer is made of the material equivalent or identical to that of the slider, a partial abrasion at a sliding surface of the slider sliding on a recording medium can be eliminated.
摘要翻译：磁头优良地适应于减小厚度的磁芯。当将厚度减小以适应高记录密度的磁芯插入通常形成在标准记录密度型磁头中的尺寸的开口中时，由等同于或等同于滑块插入在磁芯和开口的内壁之间。磁芯通过形成在开口和隔离件的内壁上的突起来定位。然后，将作为密封材料的玻璃通过磁芯，开口的内壁和间隔物注入形成在开口中的间隙中。插入的间隔物减少了要倒入的玻璃的空间体积。此外，由于间隔物由与滑块相当或相同的材料制成，所以可以消除在记录介质上滑动的滑块的滑动表面处的部分磨损。

2. 发明授权

US06624969B2 Magnetic head with cutouts corresponding to the number of lead wires 失效
标题翻译：具有与导线数相对应的切口的磁头
公开(公告)号：US06624969B2
公开(公告)日：2003-09-23
申请号：US09824058
申请日：2001-04-03
申请人： Motoji Egawa , Shigeyuki Oishi
发明人： Motoji Egawa , Shigeyuki Oishi
IPC分类号： G11B5133
CPC分类号： G11B5/2651 , G11B5/016 , G11B5/105 , G11B5/1272 , G11B5/295 , G11B5/4886
摘要： A magnetic head which can improve workability in coil formation, prevent wiring errors and is compatibly applicable to recording media having respective recording densities different from each other. Twelve cut-outs (11) are formed on four walls (10) at respective edges of a back yoke (5) and lead wires (15a, 15b) of a read/write coil (15) and lead wires (16a, 16b) of a read/write coil (16) are let separately through the respective cut-outs (11), whereby the lead wires (15a, 15b and 16a, 16b) are not mistaken for each other in wiring. Since first and second magnetic cores (2 and 3) and the read/write coils (15 and 16) corresponding thereto are provided, the magnetic head is capable of reading and writing on two recording media having respective recording densities different from each other, thereby providing compatibility for magnetic recording.
摘要翻译：一种可以提高线圈形成中的可加工性的磁头，防止布线错误，并且兼容地适用于具有彼此不同的记录密度的记录介质。十二个切口（11）形成在后磁轭（5）的各个边缘的四个壁（10）和读/写线圈（15）和引线（16a，16b）的引线（15a，15b）读取/写入线圈（16）分别通过相应的切口（11），由此引线（15a，15b和16a，16b）在布线中彼此不相互错误。由于提供了与其对应的第一和第二磁芯（2和3）和读/写线圈（15和16），磁头能够在具有彼此不同的记录密度的两个记录介质上进行读写，从而提供磁记录的兼容性。

3. 发明授权

US06837588B2 Spread illuminating apparatus with means for reflecting light dispersely 失效
标题翻译：扩散照明装置，具有分散反射光的装置
公开(公告)号：US06837588B2
公开(公告)日：2005-01-04
申请号：US10321655
申请日：2002-12-18
申请人： Toru Kunimochi , Shingo Suzuki , Motoji Egawa , Takahiro Shimura , Shigeyuki Oishi
发明人： Toru Kunimochi , Shingo Suzuki , Motoji Egawa , Takahiro Shimura , Shigeyuki Oishi
IPC分类号： F21V8/00 , F21V7/04
CPC分类号： G02B6/0013 , G02B6/0028 , G02B6/0038 , G02B6/0068
摘要： A spread illuminating apparatus having a light conductive plate made of a light transmissible material and a bar-like lamp disposed along and close to an end face of the light conductive plate. The spread illuminating apparatus also having a light reflection pattern having a stair-like configuration from a cross-sectional perspective. The light reflection pattern is formed on a major face of the light conductive plate. The spread illuminating apparatus also has a light dispersive-reflection pattern which has, for example, a plurality of convex surfaces which are formed on a major face of the light conductive plate opposite to the major face of the light conductive plate, which is provided with the light reflection pattern.
摘要翻译：一种扩散照明装置，具有由透光材料制成的导光板和沿导光板的端面配置的棒状灯。扩展照明装置也具有从横截面的角度来看具有阶梯状构造的光反射图案。光反射图案形成在导光板的主表面上。扩散照明装置还具有光分散反射图案，其具有例如形成在导光板的与导光板的主面相对的主面上的多个凸面，该多个凸面设置有光反射图案。

4. 发明授权

US06660986B2 Information reading and recording apparatus for recording media 失效
公开(公告)号：US06660986B2
公开(公告)日：2003-12-09
申请号：US10026632
申请日：2001-12-27
申请人： Kozo Matsumoto , Atsushi Kitamura , Motoji Egawa
发明人： Kozo Matsumoto , Atsushi Kitamura , Motoji Egawa
IPC分类号： G02B2740
CPC分类号： G11B7/139 , G11B7/123 , G11B7/1374 , G11B2007/0006
摘要： An information reading and recording apparatus in which recording media having respective recording densities different front each other, such as DVD, CD, CD-R/RW and the like, can be compatibly read and recorded only with a low-cost laser diode for low recording density. A laser beam from the laser diode is passed through a collimator lens via a half mirror, and there is provided a reflecting mirror for introducing the laser beam to one of two objective lenses, from which the laser beam is emitted towards the disk. One of the objective lenses is a lens having a high numerical aperture and the other one is a lens having a low numerical aperture. A super-resolution cut-off filter is disposed immediately before the objective lens having a high numerical aperture so that the objective lens and the super-resolution cut-off filter are placed in the optical path on reading DVD. On reading CD, the other lens is placed in the optical path. The laser beam reflected from the disk is received by a photo-detector for converting it into an electrical signal.

5. 发明授权

US06616316B2 Spread illuminating apparatus with frame 失效
公开(公告)号：US06616316B2
公开(公告)日：2003-09-09
申请号：US10206338
申请日：2002-07-29
申请人： Kazutoshi Takayanagi , Motoji Egawa
发明人： Kazutoshi Takayanagi , Motoji Egawa
IPC分类号： F21V800
CPC分类号： G02B6/0088 , G02B6/0028 , G02B6/0038
摘要： A spread illuminating apparatus combined with a liquid crystal display via a frame has a reduced thickness as a whole, thereby realizing a natural liquid crystal display image. A light conductive plate has its peripheral portion fitted in a groove of the frame, and a lamp disposed on a side surface of the light conductive plate is housed in the frame. A top side portion of the liquid crystal display is fitted into a cut-away portion of the frame by a predetermined dimension, and a space between a bottom surface of the light conductive plate and a top surface of the liquid crystal display is reduced, whereby the thickness of the entire apparatus is reduced by a dimension of the liquid crystal display fitted into the frame compared with that of the conventional configuration in which the frame is superimposed on the top surface of the liquid crystal display.

6. 发明授权

US06561661B2 Spread illuminating apparatus with a pair of light sources overlapped in a thickness direction of a transparent substrate 失效
公开(公告)号：US06561661B2
公开(公告)日：2003-05-13
申请号：US09985136
申请日：2001-11-01
申请人： Motoji Egawa
发明人： Motoji Egawa
IPC分类号： G01D1128
CPC分类号： G02B6/0028 , G01D11/28 , G02B6/0038 , G02B6/0046 , G02B6/0068 , Y10S385/901
摘要： There is provided a spread illuminating apparatus realizing both uniform light emission and high brightness. Two bar-like light conductive members made of a transparent material and each having a spot-like light source disposed on a large end thereof are disposed so as to overlap with each other in the thickness direction of a transparent substrate, thereby constituting a pair of bar-like light sources. Light emitted from the spot-like light source and entering one light conductive member of the two is directly guided into the transparent substrate without passing through the other light conductive member. Thus, light rays emitted from the two light conductive members do not interfere with each other so as to prevent generation of interference fringes, resulting in that uniform light emission and high brightness in the spread illuminating apparatus can be realized.

7. 发明授权

US6075681A Magnetic head assembly having symmetrically positioned shield rings 失效
标题翻译：磁头组件具有对称定位的屏蔽环
公开(公告)号：US6075681A
公开(公告)日：2000-06-13
申请号：US855558
申请日：1997-06-04
申请人： Motoji Egawa , Kazutoshi Takayanagi
发明人： Motoji Egawa , Kazutoshi Takayanagi
IPC分类号： G11B5/115 , G11B5/11 , G11B5/265 , G11B5/29 , G11B5/105
CPC分类号： G11B5/11
摘要： A magnetic head assembly 1E is constituted in such a manner as a pair of magnetic head mechanisms 3E, 3E, which are formed by accommodating a magnetic head 5 in a shield ring, respectively, are disposed opposite by opposing the proximal end rail 15a and the distal end rail 15b of one magnetic head mechanism 3E to the distal end rail 15b and the proximal end rail 15a of the other magnetic head mechanism 3E, respectively. A pair of shield rings 6,6 are positioned symmetrically with respect to each other (not in off-set). A spacing L.sub.s of a pair of shield rings is shorter than a spacing L.sub.c between the one shield ring 6 and the other magnetic head core 8. The outer magnetic flux .phi. flows to each other shield ring 6, so that the flux .phi..sub.c which flows to the magnetic head core 8 reduces. Thus, the induced voltage in the coil generated by any outer magnetic field is controlled to reduce noise.
摘要翻译：磁头组件1E以如下方式构成：一对磁头机构3E，3E，它们分别通过将磁头5容纳在屏蔽环中而形成，该磁头机构3E，3E分别与相对的基端轨15a和一个磁头机构3E的远端导轨15b分别连接到远端导轨15b和另一个磁头机构3E的近端导轨15a。一对屏蔽环6,6相对于彼此对称地定位（不处于偏移状态）。一对屏蔽环的间隔Ls比一个屏蔽环6和另一个磁头磁芯8之间的间隔Lc短。外部磁通量phi流向彼此的屏蔽环6，从而流过磁通量phi 磁头芯8减小。因此，由任何外部磁场产生的线圈中的感应电压被控制以减少噪声。

8. 发明授权

US5889642A Magnetic head 失效
标题翻译：磁头
公开(公告)号：US5889642A
公开(公告)日：1999-03-30
申请号：US889887
申请日：1997-07-10
申请人： Motoji Egawa , Kazutoshi Takayanagi
发明人： Motoji Egawa , Kazutoshi Takayanagi
IPC分类号： G11B5/60 , G11B5/105 , G11B5/265
CPC分类号： G11B5/2651 , G11B5/105
摘要： A magnetic head includes a slider including rail portions for sliding on a magnetic medium. One rail portion includes inner side walls which define a rectangular hole, and a head core body having magnetic gaps is sealed in the hole with a sealing agent. Projections are formed on the inner side walls to enable proper core positioning in the hole. Multiple projections can be formed on the respective side walls. The projections can have different heights and also be spaced from the head core body in the hole. The projections can include first projections having a height H.sub.1 and second projections having a height H.sub.2 that satisfy the equation 1.2.times.H.sub.1 .ltoreq.H.sub.2 .ltoreq.5.0 H.sub.1. Also, the relative heights of the first and second projections can be related by the inequality, H.sub.2 -H.sub.1 >C-w, in which C is the spacing between projections on opposed inner side walls, and w is the width of the head core body in a direction between the opposed inner side walls.
摘要翻译：磁头包括滑块，其包括用于在磁介质上滑动的轨道部分。一个轨道部分包括限定矩形孔的内侧壁，并且具有磁隙的磁头芯体用密封剂密封在孔中。在内侧壁上形成突出物以使得孔中能够适当地定位芯。可以在各个侧壁上形成多个突起。突起可以具有不同的高度，并且还与孔中的头部芯体间隔开。突起可以包括具有高度H1的第一突起和具有满足方程式1.2×H 1 H 2 = 5.0H 1的高度H2的第二突起。此外，第一和第二突起的相对高度可以通过不等式H2-H1> Cw相关联，其中C是相对的内侧壁上的突起之间的间隔，w是头部芯体的宽度方向在相对的内侧壁之间。

9. 发明授权

US07758230B2 Spread illuminating apparatus 有权
标题翻译：展示照明装置
公开(公告)号：US07758230B2
公开(公告)日：2010-07-20
申请号：US12153883
申请日：2008-05-27
申请人： Naoyuki Terada , Motoji Egawa , Akinobu Sano
发明人： Naoyuki Terada , Motoji Egawa , Akinobu Sano
IPC分类号： F21V7/04
CPC分类号： G02B6/0088 , G02B6/0021 , G02B6/0055 , G02B6/0091
摘要： A spread illuminating apparatus includes an LED, a transparent resin plate and a light reflecting sheet, wherein the transparent resin plate includes slits adapted to have inserted therein flap portions of the light reflecting sheet, and wherein an adhesive tape with flexibility is placed along at least one flap portion of the light reflecting sheet so as to cover at least one slit of the transparent resin plate, whereby the light reflecting sheet is prevented from warping or undulating in spite of difference in thermal expansion coefficient between the materials of the transparent resin plate and the light reflecting sheet, and also whereby light emitted from the LED and traveling in the transparent resin plate is totally reflected by the flap portions and therefore prevented from leaking from the outer side surfaces of the transparent resin plate.
摘要翻译：扩散照明装置包括LED，透明树脂板和光反射片，其中透明树脂板包括适于插入光反射片的翼片部分的狭缝，并且其中至少具有柔性的胶带所述光反射片的一个折片部分覆盖所述透明树脂板的至少一个狭缝，由此防止透光树脂板的材料与透明树脂板的材料之间的热膨胀系数的差异而导致光反射片翘曲或起伏光反射片，并且由LED发出并在透明树脂板中行进的光被折片部全部反射，因此防止从透明树脂板的外侧表面泄漏。

10. 发明授权

US07726868B2 Spread illuminating apparatus, transparent resin plate for use in spread illuminating apparatus, and method of injection-molding transparent resin plate 有权
标题翻译：扩展照明装置，用于展开照明装置的透明树脂板，以及注塑成型透明树脂板的方法
公开(公告)号：US07726868B2
公开(公告)日：2010-06-01
申请号：US12153882
申请日：2008-05-27
申请人： Naoyuki Terada , Motoji Egawa , Akinobu Sano
发明人： Naoyuki Terada , Motoji Egawa , Akinobu Sano
IPC分类号： F21V7/04
CPC分类号： B29C45/0025 , B29C2045/0027 , B29L2031/747 , G02B6/0021 , G02B6/0055 , G02B6/0065 , G02B6/0088
摘要： A spread illuminating apparatus of side light type includes a transparent resin plate integrally composed of a light conductor plate portion and a housing frame portion, a light reflecting sheet, and a light source, wherein an opening for housing the light source is provided at a side portion of the transparent resin plate, slits are provided along a boundary between the light conductor plate portion and the housing frame portion, and wherein a gate for injecting resin into a molding die cavity for the transparent resin plate is positioned outside the boundary of the light conductor plate portion and the housing frame portion and is positioned also between the opening and one of slits which are provided toward the side portion of the transparent resin plate having the opening and which are located clear of the opening.
摘要翻译：侧光型的扩散照明装置包括由导光板部分和壳体框架部分一体地组成的透明树脂板，光反射片和光源，其中用于容纳光源的开口设置在侧面透明树脂板的一部分，沿着导光板部和壳体框架部之间的边界设置狭缝，并且其中用于将树脂注入到用于透明树脂板的成型模腔中的浇口位于光的边界之外导体板部分和壳体框架部分，并且还位于开口和一个狭缝之间，狭缝被设置成朝向具有开口的透明树脂板的侧部，并且位于离开开口的位置。

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