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1. 发明授权

EP0109686B1 Color sensor 有权
标题翻译：颜色传感器
公开(公告)号：EP0109686B1
公开(公告)日：1989-10-11
申请号：EP83111612.4
申请日：1983-11-21
申请人： Hitachi Maxell Ltd.
发明人： Kitta, Kenichi , Kanazawa, Yasunori , Otomo, Yoshiro
IPC分类号： G01N21/55 , G01J3/46 , B07C5/342 , H01L33/00
CPC分类号： G01J3/02 , G01J3/0218 , G01J3/50 , G01J3/501 , G01J2003/466 , G01N21/314 , G01N2201/0696 , G01N2201/08

2. 发明公开

EP0218231A2 Shutter arrangement for a disc cartridge 失效
标题翻译： VerschlussfürPlattenkassette。
公开(公告)号：EP0218231A2
公开(公告)日：1987-04-15
申请号：EP86113850.1
申请日：1986-10-07
申请人： Hitachi Maxell Ltd.
发明人： Koyama, Mitsuyoshi , Matsushima, Seiichi , Umeda, Jun-ichi , Kanazawa, Yasunori , Nakamori, Yoshiyuki
IPC分类号： G11B23/03
CPC分类号： G11B23/0308
摘要： In a disc cartridge comprising a cartridge case having recording head and spindle insertion hole and a shutter movably mounted on the cartridge case for moving between an opened position and closing position where the recording head and spindle insertion hole are closed, said shutter is mounted on a slider movably mounted along one edge portion of the cartridge case, wherein the improvement comprises a stopper for releasably maintaining the shutter in the closed position when the disc cartridge is not used.
摘要翻译：在包括具有记录头和主轴插入孔的盒壳体的盘盒和可移动地安装在盒壳体上用于在打开位置和关闭位置之间移动记录头和主轴插入孔关闭的快门的盘盒中，所述挡板安装在滑块沿着盒壳体的一个边缘部分可移动地安装，其中改进包括止动件，用于当不使用盘盒时将挡板可释放地保持在关闭位置。

3. 发明公开

EP0109686A2 Color sensor 有权
标题翻译：颜色传感器。
公开(公告)号：EP0109686A2
公开(公告)日：1984-05-30
申请号：EP83111612.4
申请日：1983-11-21
申请人： Hitachi Maxell Ltd.
发明人： Kitta, Kenichi , Kanazawa, Yasunori , Otomo, Yoshiro
IPC分类号： G01N21/55 , G01J3/46 , B07C5/342 , H01L33/00
CPC分类号： G01J3/02 , G01J3/0218 , G01J3/50 , G01J3/501 , G01J2003/466 , G01N21/314 , G01N2201/0696 , G01N2201/08
摘要： A color sensor comprising a plurality of light emitting sources of different colors each of which is drived in a time divisional manner to emit the different colors sequentially, a light receiving element for receiving the light from an object illuminated by the respective color lights from the light emitting sources and a circuit arrangement for producing output signals representing the color of the object.

4. 发明公开

EP0332408A1 Magneto-optical recording device 失效
标题翻译：磁选Aufzeichnungsgerät。
公开(公告)号：EP0332408A1
公开(公告)日：1989-09-13
申请号：EP89302279.8
申请日：1989-03-07
申请人： Hitachi Maxell Ltd. , HITACHI, LTD.
发明人： Tanaka, Yoshito 1816-4, Shimoinayoshi , Fujiwara, Hideo 2-24-9, Keyakidai , Kanazawa, Yasunori , Nakao, Takeshi Haitsu Asahi 102
IPC分类号： G11B11/10 , G11B13/04
CPC分类号： G11B11/10515 , G11B11/10519 , G11B11/10576
摘要： A magneto-optical recording device is provided which is capable of erasing, recording and/or reproducing information on the same track of a magneto-optical disc recording medium apparently at the same time. Three separate laser sources (2, 10, 12) are provided for emitting an erasing light beam, a recording light beam and a reproduction light beam to the recording medium, with each of the laser sources being adapted to irradiate the same track on recording medium with a light spot in such a manner that the light spots from the three laser sources are arranged in this order from the upstream side of the advancing track. Constant magnetic bias fields in opposite directions are generated at locations where the light beams from the first, erasing, and second, recording, light beam laser sources are irradiated.
摘要翻译：提供了一种磁光记录装置，其能够显着地同时擦除，记录和/或再现与磁光盘记录介质相同的轨道上的信息。提供三个单独的激光源（2,10,12），用于向记录介质发射擦除光束，记录光束和再现光束，其中每个激光源适于在记录介质上照射相同的轨道具有来自三个激光源的光点从前进轨道的上游侧依次排列的光点。在来自第一，擦除和第二记录光束激光源的光束被照射的位置处产生相反方向的恒定偏磁场。

5. 发明公开

EP0144058A3 Apparatus and record carrier for optically writing information 失效
标题翻译：用于光学书写信息的装置和记录载体
公开(公告)号：EP0144058A3
公开(公告)日：1986-10-08
申请号：EP84114332
申请日：1984-11-27
申请人： HITACHI, LTD. , Hitachi Maxell Ltd.
发明人： Yonezawa, Seiji , Kanazawa, Yasunori , Tsuyoshi, Toshiaki
IPC分类号： G11B07/013 , G11B07/00 , G11B19/28 , G11B27/02
CPC分类号： G11B7/0045 , G11B7/0037 , G11B7/00745 , G11B7/0901 , G11B7/0938 , G11B7/0953 , G11B7/1369 , G11B7/24 , G11B27/02
摘要： A record carrier has a circular disc-shaped substrate (10A) on which a recording layer (10B) capable of optically writing information therein is disposed, and is so constructed that a plurality of circumferential reference tracks (11°) extending in a rotating direction are provided at radial intervals, the reference track being put into an optically detectable structure so as to function as optical guide for recording information between the adjacent reference tracks (11°). A first light beam (8) and a second light beam (9) are condensed by an identical objective lens so as to be respectively focused on the recording layer (10B) of the record carrier (10). As one of the reference tracks (11°) is being tracked by the first light beam (8), the second light beam (9) is diffracted by a light diffracter so as to be spaced from the first light beam (8) on the record carrier (10) by desired track pitches in the radial direction thereof. Thus, data is sequentially recorded at predetermined pitches in a recording area located between the reference tracks (11°) by means of the second light beam (9).

6. 发明授权

EP0309200B1 Optical information recording/reproducing apparatus 失效
标题翻译：一种光学信息记录/再现装置。
公开(公告)号：EP0309200B1
公开(公告)日：1993-12-01
申请号：EP88308708.2
申请日：1988-09-20
申请人： Hitachi Maxell Ltd.
发明人： Sakemoto, Akito , Kanazawa, Yasunori , Watanabe, Hitoshi
IPC分类号： G11B11/10 , G11B7/013 , G11B7/125 , G11B7/13
CPC分类号： G11B11/10506 , G11B11/10515 , G11B11/10576 , G11B27/36

7. 发明公开

EP0218231A3 Shutter arrangement for a disc cartridge 失效
标题翻译：快门盒的快门装置
公开(公告)号：EP0218231A3
公开(公告)日：1988-07-27
申请号：EP86113850
申请日：1986-10-07
申请人： Hitachi Maxell Ltd.
发明人： Koyama, Mitsuyoshi , Matsushima, Seiichi , Umeda, Jun-ichi , Kanazawa, Yasunori , Nakamori, Yoshiyuki
IPC分类号： G11B23/03
CPC分类号： G11B23/0308
摘要： In a disc cartridge comprising a cartridge case having recording head and spindle insertion hole and a shutter movably mounted on the cartridge case for moving between an opened position and closing position where the recording head and spindle insertion hole are closed, said shutter is mounted on a slider movably mounted along one edge portion of the cartridge case, wherein the improvement comprises a stopper for releasably maintaining the shutter in the closed position when the disc cartridge is not used.

8. 发明公开

EP0201885A2 Disc cartridge 失效
标题翻译：光盘盒
公开(公告)号：EP0201885A2
公开(公告)日：1986-11-20
申请号：EP86106378.2
申请日：1986-05-10
申请人： Hitachi Maxell Ltd. , HITACHI, LTD.
发明人： Nakamori, Yoshiyuki , Matsushima, Seiichi , Kanazawa, Yasunori , Koyama, Mitsuyoshi , Abe, Shinichi , Fujimoto, Nobuyuki
IPC分类号： G11B23/03 , G11B13/04
CPC分类号： G11B11/10558 , G11B23/0308 , G11B23/0316
摘要： In a disc cartridge comprising a cartridge case, a magnetic recording disc rotatably mounted in the cartridge case, and head insertion openings formed extending to the side portions of said cartridge case, said openings are opened even at one edge of the cartridge case for facilitating insertion of the head mounted in a recording and playing back device, said cartridge case is reinforced by a reinforcement member having a smaller diameter or a smaller thickness than the thickness of said cartridge case.
摘要翻译：在包括盒壳体，可旋转地安装在盒壳体中的磁记录盘和形成为延伸到所述盒壳体的侧部的头部插入开口的盒式盘中，所述开口即使在盒壳体的一个边缘处也被打开，以便于插入安装在记录和重放装置中的头部，所述盒壳体由具有比所述盒壳体的厚度更小或更小厚度的增强构件加强。

9. 发明公开

EP0142411A1 Disc cartridge 失效
标题翻译：光盘盒
公开(公告)号：EP0142411A1
公开(公告)日：1985-05-22
申请号：EP84402053.7
申请日：1984-10-12
申请人： Hitachi Maxell Ltd.
发明人： Kanazawa, Yasunori , Arai, Haruo , Kuwa, Tadahiro c/o HITACHI MAXELL LTD Shihoryo
IPC分类号： G11B17/04
CPC分类号： G11B17/0436 , G11B23/0321
摘要： In a disc cartridge having a clamp mechanism (47) for clamping a recording disc (4) and operable to release the clamped state from outside, there is provided a shutter plate (57) for closing an operating opening (53) through which the clamp mechanism (47) is operated so as to prevent entrance of dust or the like in the disc cartridge.
摘要翻译：在具有用于夹持记录盘（4）并可从外部释放夹持状态的夹持机构（47）的盘盒中，设置有用于关闭操作开口（53）的闸板（57），通过该开口板机构（47）被操作，以防止盒式盘中的灰尘或类似物进入。

10. 发明公开

EP0386971A1 Method of producing optical disk, jig for carrying out the method, and optical disk produced by the method 失效
标题翻译：一种用于制造光盘，教学用于执行该方法和由该方法的光盘制造方法。
公开(公告)号：EP0386971A1
公开(公告)日：1990-09-12
申请号：EP90302296.0
申请日：1990-03-05
申请人： Hitachi Maxell Ltd.
发明人： Sugiyama, Toshinori , Kanazawa, Yasunori , Sonobe, Takeo , Tanaka, Yoshito , Fukutake, Sunao , Miura, Makoto
IPC分类号： G11B7/26 , G11B7/24
CPC分类号： G11B23/0035 , G11B7/24 , G11B7/24038 , G11B7/26
摘要： According to a method of producing an optical disk, comprising the steps of providing a jig having a cylindrical portion and a center pin formed on said cylindrical portion coaxially therewith; providing a transparent substrate having a reference hole formed therein at its central portion and disposed coaxially with an imaginary center of beam-tracking tracks, on the substrate, constituted by preformed pits and projections which tracks are spaced at predetermined intervals radially outwardly of the reference hole; fitting said cylindrical portion of the jig into the reference hole in the transparent substrate; and inserting the center pin of said jig into a spindle hole, formed in a spindle hole-containing member, against movement relative to the spindle hole, and subsequently securing the spindle hole-containing member to a central portion of the transparent substrate while keeping the relative position thereof the spindle hole being smaller in diameter than the reference hole in the transparent substrate, concentricity of the reference hole and the spindle hole can be easily attained.
摘要翻译：。根据在光盘制造方法，包括：提供具有一个圆柱形部分和形成在所述筒状部同轴那里与中心销的夹具的步骤的方法; 提供具有基准孔在其中央部形成于其中并与波束跟踪轨道的假想中心孔同轴设置，在基片上，通过预先形成的凹坑和凸起，所述凸起的轨道以预定的间隔的基准的间隔径向向外构成的透明基板 ; 所述夹具的成在透明基板的基准孔嵌合筒部; 和插入所述夹具的中心销插入一轴孔，孔中形成的主轴不能相对移动构件到主轴上，并且随后将主轴含孔构件固定到所述透明基板的中央部，同时保持含有空穴其主轴孔的直径大于在所述透明基板的基准孔较小的相对位置，所述基准和主轴孔的孔同心，可以容易地实现。

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