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1. 发明授权

EP0767457B1 Magneto-optical recording device 失效
标题翻译：一种用于磁 - 光记录
公开(公告)号：EP0767457B1
公开(公告)日：2001-08-29
申请号：EP96119605.2
申请日：1991-01-18
申请人： SHARP KABUSHIKI KAISHA
发明人： Nakayama, Junichiro , Miyake, Tomoyuki , Katayama, Hiroyuki , Ohta, Kenji
IPC分类号： G11B11/10 , G11B21/21 , G11B5/60
CPC分类号： G11B5/6005 , G11B5/40 , G11B5/6011 , G11B5/6082 , G11B11/1058 , G11B23/505 , G11B33/148

2. 发明授权

EP0656626B1 Information recording-reproduction method 失效
标题翻译： /重放信息记录
公开(公告)号：EP0656626B1
公开(公告)日：2000-11-15
申请号：EP94119049.8
申请日：1994-12-02
申请人： SHARP KABUSHIKI KAISHA
发明人： Kojima, Kunio , Sekimoto, Yoshihiro , Nakata, Yasuo , Miyake, Tomoyuki , Ogata, Nobuo , Inui, Toshiharu
IPC分类号： G11B20/10 , G11B27/00 , G11B20/12 , G11B7/007 , G11B7/00
CPC分类号： G11B20/10527 , G11B7/0037 , G11B7/0045 , G11B7/005 , G11B11/10508 , G11B11/10563 , G11B11/10595 , G11B27/034 , G11B27/105 , G11B2220/20 , G11B2220/216 , G11B2220/2525 , G11B2220/2545

3. 发明公开

EP0533217A3 Photo-mask 失效
标题翻译：光掩模
公开(公告)号：EP0533217A3
公开(公告)日：1993-04-14
申请号：EP92120246.1
申请日：1987-02-24
申请人： SHARP KABUSHIKI KAISHA
发明人： Hirokane, Junji , Katayama, Hiroyuki , Takahashi, Akira , Inui, Tetsuya , Ohta, Kenji , Washo, Junichi , Miyake, Tomoyuki , Van, Kazuo , Mieda, Michinobu
IPC分类号： G03F1/14
CPC分类号： G03F1/54 , G03F1/68 , G11B7/261 , Y10S430/146
摘要： A method of manufacturing a photo-mask, which includes the steps of applying a resist film (3) onto a substrate (1) of quartz, glass and the like, subjecting the resist film (3) to light exposure and development to form a fine resist pattern (4), etching the mask substrate (1) covered by the fine resist pattern (4) so as to cause a non-light transmitting thin film (2) of Cr, Ta, etc. to adhere thereon by vapor deposition, sputtering and the like, and removing the thin film (2) on the resist pattern (4) together with the resist film (3), thereby to form the photo-mask. The disclosure is also directed to a photo-mask manufactured by the above method.

4. 发明公开

EP0480578A1 Magnetic disk device 失效
标题翻译： Abspielgerätfürmagnetische Platten。
公开(公告)号：EP0480578A1
公开(公告)日：1992-04-15
申请号：EP91308174.1
申请日：1991-09-06
申请人： SHARP KABUSHIKI KAISHA
发明人： Nakayama, Junichiro , Katayama, Hiroyuki , Miyake, Tomoyuki , Ohta, Kenji
IPC分类号： G11B5/54
CPC分类号： G11B19/20 , G11B5/54 , G11B11/10556 , G11B11/1058 , G11B11/10586 , G11B11/10595
摘要： A magnetic disk device having a floating-type magnetic head (14), for use with a disk-shaped recording medium (11) having a sliding area (E) for the floating-type magnetic head (14) formed outside a recording area (D). The length in the disk radial direction of a suspension supporting the floating-type magnetic head is varied depending on individual magnetic disk devices. In another arrangement, a control means is provided for setting two reference values so that a radial position of the floating-type magnetic head detected by a detection section is compared with these reference values, and for alternating one of the preset reference values to the other reference value upon receiving a rotation stop signal. In still another arrangement, control means is provided, whereby a radial position for sliding of the floating-type magnetic head is randomly varied within the sliding area. According to these arrangements, since the radial position for sliding of the floating-type magnetic head is varied within the sliding area without being located at the same position, abrasion within the sliding area can be dispersed. As a result, it becomes possible to extend the longevities of the floating-type magnetic head and the recording medium.
摘要翻译：一种具有浮动型磁头（14）的磁盘装置，用于与形成在记录区域外部的浮动型磁头（14）的滑动区域（E）一起使用的盘状记录介质（11） D）。支撑浮动型磁头的悬架的盘径方向上的长度根据各个磁盘装置而变化。在另一种布置中，提供一个控制装置，用于设置两个参考值，使得由检测部分检测到的浮动型磁头的径向位置与这些参考值进行比较，并且将一个预设参考值与另一个参考值交替接收到旋转停止信号时的参考值。在另一种布置中，提供控制装置，由此浮动式磁头的滑动的径向位置在滑动区域内随机变化。根据这些布置，由于浮动型磁头的滑动的径向位置在滑动区域内变化而不位于相同的位置，所以可以分散滑动区域内的磨损。结果，可以延长浮动型磁头和记录介质的寿命。

5. 发明公开

EP0438315A3 Magneto-optical recording device 失效
标题翻译：磁光记录装置
公开(公告)号：EP0438315A3
公开(公告)日：1992-03-11
申请号：EP91300385.1
申请日：1991-01-18
申请人： SHARP KABUSHIKI KAISHA
发明人： Nakayama, Junichiro , Miyake, Tomoyuki , Katayama, Hiroyuki , Ohta, Kenji
IPC分类号： G11B11/10 , G11B5/10
CPC分类号： G11B5/6005 , G11B5/40 , G11B5/6011 , G11B5/6082 , G11B11/1058 , G11B23/505 , G11B33/148
摘要： A magneto-optical recording device has a flying head (11) that floats over a magneto-optical disk according to the rotation of the magneto-optical disk. The flying head includes a head slider. A solid lubricant (13) is applied to the bottom surface of the head slider facing the magneto-optical disk. Since the solid lubricant makes the flying head contact with the magneto-optical disk smoothly, the scratching and wear of the magneto-optical disk and the flying head decrease. Therefore, the reliability and the durability of the magneto-optical recording device can improve. Physical protrusions and recessions or holes containing fluorocarbon oil therein may be formed instead of the solid lubricant. In this case, the contact area between the flying head and the magneto-optical disk is also smaller than the case where physical protrusions and recessions are not formed. In addition, with a configuration such that thin-film layers made of a fluorocarbon resin having an excellent lubricity are formed on both sides of the bottom surface of the head slider, since the magneto-optical disk comes into contact with the head smoothly, the reliability and the durability of the magneto-optical recording device can improve.

6. 发明公开

EP0365333A3 Optical recording element 失效
标题翻译：光学记录元件
公开(公告)号：EP0365333A3
公开(公告)日：1991-11-27
申请号：EP89310784.7
申请日：1989-10-20
申请人： SHARP KABUSHIKI KAISHA
发明人： Ishikawa, Toshio , Katayama, Hiroyuki , Van, Kazuo , Miyake, Tomoyuki , Nakayama, Junichiro , Ohta, Kenji , Yamaoka, Hideyoshi
IPC分类号： G11B7/24
CPC分类号： G11B7/253 , G11B7/24053 , G11B7/254
摘要： An optical recording element according to the present invention comprising: (i) a transparent substrate (1) through which light passes; (ii) a transparent low-resistance layer (2) having a specific resistance so as to prevent the adhesion of dust to the surface of the element caused by a static charge, the layer being formed on the surface, on which a light beam is incident, of the transparent substrate; and (iii) an optical thin film (3) composed of at least one layer, formed on the other surface of the transparent substrate so as to transmit light beams used for recording, erasing and playback, and reflect lights which have wavelengths different from the wavelength of the above light beams and are within a specified visible region of the spectrum. With this arrangement, lights within a specified visible region of the spectrum are reflected so that the element appears to be colored according to the wavelengths of the reflected lights. Also, a problem often found in a conventional optical recording element having a transparent substrate of a resin material that the surface of the element is hardened by a light beam, can be solved. Even if a static charge is generated on the surface of such an element, the conductive transparent low-resistance substrate can eliminate the static charge outward whereby a static charge is less likely to be accumulated and the surface can be kept clean in order to improve the reliability.

7. 发明公开

EP0352099A3 An external magnetic field device for a magnetooptical information recording and reproducing apparatus 失效
标题翻译：用于磁信息记录和再现装置的外部磁场装置
公开(公告)号：EP0352099A3
公开(公告)日：1991-10-09
申请号：EP89307336.1
申请日：1989-07-19
申请人： SHARP KABUSHIKI KAISHA
发明人： Miyake, Tomoyuki , Katayama, Hiroyuki , Nakayama, Junichiro , Miyake, Takahiro , Ohta, Kenji , Kobayashi, Shozo
IPC分类号： G11B11/10
CPC分类号： G11B11/10508
摘要： An external magnetic field device for a magnetooptical information recording and reproducing apparatus in which an external magnetic field to be applied to a magnetooptical information recording medium is modulated by supplying to a magnetic head (3) an alternate current the polarity of which is changed according to information to be recorded. The device comprises an offset circuit (2) for producing an offset in the alternate current. The direction of the offset is selected so as to increase the current level of the polarity by which the initial magnetization of the information recording medium (4) is reversed. The direction of the offset may be selected so as to cancel the leakage magnetic field.

8. 发明公开

EP0437308A2 Recording method for magneto-optical memory medium 失效
标题翻译： Aufzeichnungsmethodefürmagnetooptisches Speichermedium。
公开(公告)号：EP0437308A2
公开(公告)日：1991-07-17
申请号：EP91300028.7
申请日：1991-01-02
申请人： SHARP KABUSHIKI KAISHA
发明人： Miyake, Tomoyuki , Ishii, Mitsuo , Katayama, Hiroyuki , Ohta, Kenji
IPC分类号： G11B11/10
CPC分类号： G11B11/10515 , G11B11/10519 , G11B11/1058 , G11B11/10586
摘要： A recording method for a magneto-optic memory medium of exchange-coupled type having a recording layer of a low Curie point and high coercive force and a reading layer of a high Curie point and low coercive force, which comprises the steps of:

applying a magnetic field to the magneto-optic memory medium to develop a predetermined data in the reading layer,
and then applying both an optical beam and a magnetic field to the magneto-optic memory medium for writing the predetermined data in the recording layer, and simultaneously verifying the data upon said writing on the basis of a Kerr effect of the optical beam caused by the reading layer.
摘要翻译：一种用于具有低居里点和高矫顽力的记录层和具有高居里点和低矫顽力的读取层的交换耦合型磁光存储介质的记录方法，包括以下步骤：磁场到磁光存储介质，以在读取层中形成预定的数据，然后将光束和磁场同时应用于磁光存储介质，用于将预定数据写入记录层，同时验证基于由读取层引起的光束的克尔效应，所述写入时的数据。

9. 发明公开

EP0338827A3 Magneto-optical recording and reproducing device 失效
标题翻译：磁光记录和再现装置
公开(公告)号：EP0338827A3
公开(公告)日：1990-10-31
申请号：EP89303927.1
申请日：1989-04-20
申请人： SHARP KABUSHIKI KAISHA
发明人： Katayama, Hiroyuki , Ohta, Kenji , Nakayama, Junichiro , Miyake, Tomoyuki , Takahashi, Akira
IPC分类号： G11B11/10
CPC分类号： G11B11/1051 , G11B11/10515 , G11B11/10521 , G11B11/10528
摘要： A magneto-optical recording and reproducing device (12) comprising an optical head (10) provided with a laser beam source (2), focusing a laser beam onto a magneto-optical recording medium (1) with a magnetic substance film (1b) of perpendicular magnetic anisotropy, a magnetic coil (7) generating an alternating magnetic field according to data to be recorded, and forming positive magnetized parts being magnetized in a predetermined direction, and negative magnetized parts being magnetized in the opposite direction of said positive magnetized parts on said magnetic substance film of said recording medium, recording and reproducing data by existence or absence of said negative magnetized parts, characterized in that there is provided a laser beam output level control means (11) controlling intensity of said laser beam at forming said positive magnetized parts more strongly than forming said negative magnetized parts, so that the width of said positive magnetized parts becomes wider than said negative magnetized parts. Hence, this device can prevent the causes of false signals and incorrect detection influenced by a residual negative magnetized domain which is a part of the negative magnetized domain formed according to old data, when recorded data according to the existence or absence of the negative magnetized parts, that is, according to the existence or absence, length, position et cetera of the negative magnetized domain comprising of the negative magnetized parts, is reproduced, consequently the reliability on recording and reproducing data can be improved.

10. 发明公开

EP1049092A3 Disk cartridge 有权
标题翻译：磁盘盒
公开(公告)号：EP1049092A3
公开(公告)日：2002-06-26
申请号：EP00108871.5
申请日：2000-04-26
申请人： SHARP KABUSHIKI KAISHA
发明人： Takamori, Nobuyuki , Tanaka, Toshiyuki , Yoshida, Mitsunobu , Usui, Nobuyuki , Miyake, Tomoyuki , Inui, Toshiharu , Tajima, Hideharu , Takahashi, Akira , Tamura, Toshihiro
IPC分类号： G11B23/03
CPC分类号： G11B23/0316 , G11B17/043 , G11B23/0035 , G11B23/0308 , G11B23/0312
摘要： A disk cartridge having a small size and a sufficient portability. The disk cartridge has a size of 58 mm (L1) x 54 mm (L2) x 4 mm (L3), a thickness less than 5 mm and a small area less than a square of 65 mm. The disk cartridge has a notch 10 formed on the insertion side and having a width of 2 mm (L6) and a length of 27.5 mm (i.e., a taper portion of 6 mm (L4) + a straight portion of 21.5 mm (L5)).
摘要翻译：盘盒具有小尺寸和足够的便携性。盘盒的尺寸为58毫米（L1）×54毫米（L2）×4毫米（L3），厚度小于5毫米，小面积小于65毫米的正方形。盘盒具有形成在插入侧上的宽度为2mm（L6）且长度为27.5mm（即，6mm的锥形部分（L4）+ 21.5mm的直线部分（L5））的凹口10，）。

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