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公开(公告)号：US5260929A
公开(公告)日：1993-11-09
申请号：US696413
申请日：1991-05-06
申请人： Goro Naoki , Kazuo Momoo , Shoji Goto , Ichiro Kawamura , Hiroshi Yamamoto
发明人： Goro Naoki , Kazuo Momoo , Shoji Goto , Ichiro Kawamura , Hiroshi Yamamoto
CPC分类号： G11B7/08582
摘要： An optical disk drive of the type having a fixed optical unit having a light transmitting hole from which a laser beam is emitted, and a movable head having a light receiving hole from which the laser beam is received, wherein the respective outer edges of the light emitting and receiving holes are surrounded by a pair of annular projections. The annular projections are engageable with each other to provide a seal therebetween when the head is displaced toward the fixed optical unit. The annular projections are preferably made of a cushioning material in which instance they also serve as a cushioning or shock-absorbing member.
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公开(公告)号：US5206849A
公开(公告)日：1993-04-27
申请号：US653340
申请日：1991-02-11
申请人： Hiroshi Yamamoto , Ichiro Kawamura , Shoji Goto
发明人： Hiroshi Yamamoto , Ichiro Kawamura , Shoji Goto
CPC分类号： G11B7/12 , G11B7/0932
摘要： An objective lens actuator for an optical storage drive includes a cross-sectionally L-shaped torsion plate spring which is fixed at its central portion to an objective lens holder and at its opposite ends to free ends of a pair of parallel spaced, cantilevered plate springs. The torsion plate spring is caused to twist to displace the objective lens holder and an objective lens mounted thereon in the tracking direction. The parallel spaced plate springs are caused to bend to displace the objective lens holder and the objective lens in the focusing direction.
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3.发明授权
公开(公告)号：US5200940A
公开(公告)日：1993-04-06
申请号：US654461
申请日：1991-02-13
申请人： Shoji Goto , Ichiro Kawamura , Hiroshi Yamamoto
发明人： Shoji Goto , Ichiro Kawamura , Hiroshi Yamamoto
CPC分类号： G11B7/08582
摘要： An optical unit actuator for an optical information recording/reproducing apparatus includes an electromagnetic drive mechanism composed of a coil and a magnet cooperative to drive an objective lens mounted on an optical unit. One of the coil and the magnet is secured to the optical unit. The other of the coil and the magnet is held on a fixed unit with an elastic support member disposed therebetween, the fixed unit being immovable as against the movable optical unit. The elastic support member substantially dampens or takes up vibration caused by a reaction force creased as a result of acceleration of the objective lens when the objective lens is driven to follow a dynamic radial runout and an axial deflection of an optical disk. With the elastic support member thus provided, an optical component, a photo-electric transducer or the optical disk which is disposed on the side of the fixed unit is isolated from vibration. The control characteristics of a system including an optical head, the optical disk and a control circuit for the optical head can, therefore, be improved.
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公开(公告)号：US5923509A
公开(公告)日：1999-07-13
申请号：US530430
申请日：1995-09-19
IPC分类号： G11B17/04 , G11B17/047 , G11B23/03
CPC分类号： G11B17/047 , G11B17/056 , G11B17/057 , G11B23/0307 , G11B23/0308 , G11B23/0311 , G11B23/0316
摘要： A disk cartridge (21) for loading on a flat tray (1) included in a disk loading apparatus. Recesses (29) are provided on the back side of the disk cartridge near the rear end (27a) thereof, and projections (16) are provided on the tray for judging whether the disk cartridge is loaded properly on the tray. In addition, notches (30) are formed on the right (27d) and left (27c) sides of the disk cartridge between the recesses and the rear end thereof for engagement with an automatic cartridge-changer.
摘要翻译： 一种用于装载在包括在盘装载装置中的平板托盘（1）上的盘盒（21）。 在盘盒的后端（27a）的后侧设置有凹部（29），并且在托盘上设置突起（16），以判断盘盒是否正确地装载在托盘上。 此外，凹槽（30）形成在盘盒的右（27d）和左（27c）侧之间的凹部和其后端之间，以与自动墨盒更换器接合。
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公开(公告)号：US5891359A
公开(公告)日：1999-04-06
申请号：US899361
申请日：1992-06-16
CPC分类号： C09K19/0266 , C07C69/76 , C09K19/322
摘要： The novel liquid crystal compounds of the present invention are represented by the following formulas �I!-�II! and have tristable molecular orientation states and can be used for display devices and electrooptical devices. ##STR1## wherein R.sub.1 represents an alkyl group of 5-18 carbon atoms; R.sub.2 represents an alkyl group of 6-16 carbon atoms; R.sub.3 represents an alkyl group of 8-18 carbon atoms; R.sub.4 represents an alkyl group of 6-14 carbon atoms; Y represents ##STR2## and * indicates an optically active center.
摘要翻译： 本发明的新型液晶化合物由下式[I] - [II]表示，具有三重分子取向状态，可用于显示装置和电光装置。 其中R 1表示5-18个碳原子的烷基; R 2表示6-16个碳原子的烷基; R3代表8-18个碳原子的烷基; R4代表6-14个碳原子的烷基; Y表示
，*表示光学活动中心。 -
公开(公告)号：US5854777A
公开(公告)日：1998-12-29
申请号：US20415
申请日：1998-02-09
申请人： Ichiro Kawamura , Ryoichi Imanaka , Yoshikazu Goto
发明人： Ichiro Kawamura , Ryoichi Imanaka , Yoshikazu Goto
CPC分类号： G11B23/0302 , G11B23/0317
摘要： A cartridge for housing a recording medium therein. The cartridge includes a cartridge body configured such that a signal recording apparatus can record a signal onto the recording medium when the cartridge is loaded in the signal recording apparatus. The cartridge also includes an opening in the cartridge body for removing the recording medium from the cartridge body, and a cover covering the opening. An indicator on the cartridge body indicates whether the cover has ever been opened or removed from the cartridge body.
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公开(公告)号：US5825151A
公开(公告)日：1998-10-20
申请号：US529513
申请日：1995-09-18
CPC分类号： H02P8/14
摘要： According to the present invention, a stepping motor driving apparatus having a rotor and a stator in n (an integer equal to or larger than 2) phases for moving a moving body is provided. The stepping motor driving apparatus includes a driver for selectively supplying to the stator a first current pattern for rotating the rotor at a first pitch and a second current pattern for rotating the rotor at a second pitch different from the first pitch based on a drive switching signal. The driver switches the first current pattern and the second current pattern at a point where a torque generated by the first current pattern is equal to a torque generated by the second current pattern and supplies the first current pattern or the second current pattern to the stator.
摘要翻译： 根据本发明，提供一种具有用于移动移动体的n（整数等于或大于2）的转子和定子的步进电动机驱动装置。 步进电动机驱动装置包括：驱动器，用于选择性地向定子供给用于以第一节距旋转转子的第一电流模式和用于基于驱动切换信号以不同于第一音调的第二音调旋转转子的第二电流模式 。 驱动器在由第一电流模式产生的转矩等于由第二电流模式产生的转矩的点处切换第一电流模式和第二电流模式，并将第一电流模式或第二电流模式提供给定子。
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公开(公告)号：US5184847A
公开(公告)日：1993-02-09
申请号：US785877
申请日：1991-11-04
CPC分类号： C09K19/0266 , C09K19/2021
摘要： Ferrelectric chiral smetic liquid crystal compound are provided which have the formula, for example ##STR1## wherein R is a C.sub.1-20 alkyl group.
摘要翻译： 提供了具有下式的电介质手性硅溶液化合物，例如
或 其中R是C 1-20烷基。 -
公开(公告)号：US5116531A
公开(公告)日：1992-05-26
申请号：US573751
申请日：1990-08-28
IPC分类号： C07C69/773 , C07C69/90 , C07C69/94 , C09K19/02 , C09K19/20
CPC分类号： C09K19/0266 , C07C69/90 , C07C69/94 , C09K19/2021
摘要： A liquid crystal compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 5 to 18 carbon atoms; R.sub.2 represents an alkyl group having from 4 to 15 carbon atoms; X represents a single bond, --O--, ##STR2## and * indicates an optically active center. The compound exhibits three stable states of molecular orientation.
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公开(公告)号：US5878013A
公开(公告)日：1999-03-02
申请号：US710541
申请日：1996-09-19
申请人： Shinichi Maeda , Ichiro Kawamura
发明人： Shinichi Maeda , Ichiro Kawamura
IPC分类号： G11B17/03 , G11B17/04 , G11B17/057 , G11B33/02
CPC分类号： G11B17/0432 , G11B17/03 , G11B17/057
摘要： It is an object of the invention to present a recording and reproducing apparatus capable of mounting a bare disk and a cartridge selectively on a tray, without dropping from the tray in vertical position.To achieve the object, the invention comprises a turntable engaged with a disk for supporting the disk on a recording and reproducing position, a pickup for moving on the surface of the disk to record a signal in the disk or to reproduce a signal from the disk, and a flat tray for transferring between an engagement position with the turntable and a disk exchange position while holding the disk in a position so that its side may be at least in vertical position,wherein the tray possesses a first disk engaging portion freely movable in a tray transfer direction, being thrust in a disk exchange position direction of the tray, for detachably supporting the peripheral edge of the disk or one side of a cartridge, and a second disk engaging portion having a state of holding the peripheral edge of the disk together with the first disk engaging portion in a vertical position of the side of the disk, and a state of sinking into a holding surface, on the holding surface, and the holding surface possesses a cartridge mounting portion for detachably holding a cartridge incorporating a disk.
摘要翻译： 本发明的目的是提供一种能够将裸盘和盒选择性地安装在托盘上的记录和再现装置，而不会在垂直位置从托盘掉落。 为了实现该目的，本发明包括与盘相啮合的转台，用于将盘支撑在记录和再现位置，拾取器用于在盘的表面上移动以在盘中记录信号或从盘再现信号 以及用于在与转台的接合位置和盘更换位置之间传送的平盘，同时将盘保持在使其侧面可以至少在垂直位置的位置，其中托盘具有可自由移动的第一盘接合部分 托盘传送方向被推动在托盘的盘更换位置方向上，用于可拆卸地支撑盘的周边边缘或盒的一侧;以及第二盘接合部分，其具有保持盘的周边边缘的状态 与第一盘接合部分在盘的侧面的垂直位置以及在保持表面上沉入保持表面的状态以及保持表面 具有用于可拆卸地保持结合有盘的盒的盒安装部。
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