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公开(公告)号：US5519687A
公开(公告)日：1996-05-21
申请号：US154826
申请日：1988-02-11
IPC分类号： G11B17/03 , G11B17/028
CPC分类号： G11B17/0282
摘要： Turntable (10) has a turntable bottom (19) and a turntable wall (20) which together define a locating space (21) in which the hub (7) of an information disc is engageable, and in which it is centered by means of a centering member (12) and clamped by magnetic clamping means. At the circumference of the locating space a centering wall (26) is provided, which wall has an inwardly sloping surface (27). The dimensions of the various parts, the field strength of the magnetic means and the coefficients of friction of the cooperating materials of the hub and the turntable are selected in such a way that, once an information disc has reached a position in which the free end of the centering member (22) has engaged the centering hole (17) of the information disc, the outer wall (28) of the hub (7) is situated above the sliding surface (27) of the turntable. The information disc is then automatically moved into the operating position under the influence of the magnetic forces exerted on it, which forces simultaneously cause the edge of the centering hole (17) to slide over the precentering surface (23) of the centering member (22) and the edge of the hub (7) to slide over the sliding surface (27).
摘要翻译： 转台（10）具有转盘底部（19）和转盘壁（20），转盘壁（20）共同限定定位空间（21），信息盘的轮毂（7）可啮合在定位空间中， 定心构件（12）并且由磁夹紧装置夹紧。 在定位空间的圆周上设置定心壁（26），该壁具有向内倾斜的表面（27）。 选择各种部件的尺寸，磁性装置的磁场强度和轮毂和转台的配合材料的摩擦系数，使得一旦信息盘已经到达自由端 定位构件（22）已经接合信息盘的定心孔（17），轮毂（7）的外壁（28）位于转盘的滑动表面（27）的上方。 信息盘然后在施加在其上的磁力的影响下自动移动到操作位置，这同时导致定心孔（17）的边缘在定心构件（22）的预定中心表面（23）上滑动 ）和轮毂（7）的边缘在滑动表面（27）上滑动。
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2.发明授权
公开(公告)号：US5060106A
公开(公告)日：1991-10-22
申请号：US434904
申请日：1989-11-13
CPC分类号： G11B17/0436 , G11B17/03 , G11B23/0035 , G11B23/0308 , G11B23/0312
摘要： A disk cartridge having a housing in which a disk is rotatably mounted via a hub assembly. The housing includes two cover plates, each of which has a door aperture that is selectively covered by a door that is controlled by a dedicated door control assembly. When the cartridge is inserted into a disk drive, each door is opened by its respective door opening assembly such that both sides of the disk are accessible for magnetic or optical read/write operations.In the preferred embodiment, the hub assembly includes two hub halves, at least one of which includes a plurality of resilient fingers for leveling a surface of the disk when the cartridge is contained within the disk drive. At least one of the hub halves also includes a channel having a plurality of pockets formed therein such that when a spindle base having a torque transferring element is positioned adjacent to the pockets, one of the pockets is able to substantially immediately receive the torque transferring element.
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3.发明授权
公开(公告)号：US4911776A
公开(公告)日：1990-03-27
申请号：US267149
申请日：1988-11-04
IPC分类号： G11B7/26 , G11B17/028 , G11B23/00
CPC分类号： G11B17/0284 , G11B23/0035 , G11B7/26 , Y10S425/81 , Y10T156/1983
摘要： A mold is manufactured using a substrate and hub also used in the manufacture of the disc. A structure carrier provided with a mold structure is detachably connected to a substrate, and the mold structure is then centered relative to the central recess of an auxiliary tool. A disc hub is then centered relative to the recess and fixed to the substrate and the assembly of the hub, the substrate, and the structure carrier is centered on a mold base which likewise has a central recess. The structure carrier is fixed to the base, and the substrate is detached from the structure carrier leaving the mold structure centered relative to the central recess.
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公开(公告)号：US4827469A
公开(公告)日：1989-05-02
申请号：US57885
申请日：1987-06-01
IPC分类号： G11B7/26 , G11B17/028 , G11B23/00
CPC分类号： G11B17/0284 , G11B23/0035 , G11B7/26 , Y10S425/81 , Y10T156/1983
摘要： Method of providing a substrate of an optically readable information disc with an optically detectable structure, mould for use in the method, apparatus for carrying out the method, and information disc manufactured in accordance with the method.Substrate (3) is provided with a disc hub (8) comprising disc-centering means (9) which serve to center the finished information disc (17) on the drive spindle (27) of a drive apparatus. The intermediate product comprising the substrate (3) and the disc hub (8) is centered on the base (1A) of the mould by cooperation between the base-centering means (17) and the disc-centering means (9). This may be effected by the use of an auxiliary centering means (12) which is in contact with a wall (14) of a central centering hole (11) in the disc hub (8) and with a wall (13) of a central centering recess (10) in the base (1A). Thus, the reproduction layer is cured in the position which is thus centered without any play, after which the substrate together with the disc hub is detached from the mould without the centering of the servo track on the substrate being disturbed.
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公开(公告)号：US4910624A
公开(公告)日：1990-03-20
申请号：US352656
申请日：1989-05-12
IPC分类号： G11B17/00 , G11B17/028 , G11B23/00 , G11B23/50
CPC分类号： G11B23/0035
摘要： Information carrier includes an optically readable disc with a center hole and a hub with radially resilient clamping members which extend through the center hole to retain it on the disc and center it with respect to the information carrying surface on the disc. The hub further carries a sleeve which centers it on a spindle, and a magnetizable clamping ring for retaining it on a turntable, which carries permanent magnets. In an information carrier having two discs sandwiched together, the clamping members of each hub extend between the clamping members of the other hub and pass through the center holes of both discs to engage the opposite disc and retain the discs to each other.
摘要翻译： 信息载体包括具有中心孔的光学可读盘和具有径向弹性的夹持构件的毂，其延伸穿过中心孔以将其保持在盘上并使其相对于盘上的信息承载表面居中。 轮毂还带有一个使其位于主轴上的套筒和一个可磁化夹紧环，用于将其保持在一个带有永磁体的转台上。 在具有两个盘夹在一起的信息载体中，每个轮毂的夹紧构件在另一个轮毂的夹紧构件之间延伸并穿过两个盘的中心孔以接合相对的盘并将盘保持彼此。
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6.发明授权
公开(公告)号：US4670077A
公开(公告)日：1987-06-02
申请号：US778659
申请日：1985-09-23
IPC分类号： G11B7/26 , G11B17/028 , G11B23/00 , B29D17/00
CPC分类号： G11B17/0284 , G11B23/0035 , G11B7/26 , Y10S425/81 , Y10T156/1983
摘要： The invention relates to a method of providing a substrate with a centered optically detectable structure, such as a servo structure on a transport substrate of an optical information disc. The method uses a mould (1) having a base (1A) carrying a mould structure (2) which is covered with a reproduction layer (4) of a transparent radiation-curable resin, which after curing is detached from the mould together with the substrate. In its center the base (1A) of the mould is provided with base-centering means (7) relative to which the mould structure is centered accurately. Before it is placed on the mould a substrate (3) is provided with a disc hub (8) comprising separate disc-centering means (9) which serve to center the finished information disc (17) on the drive spindle (27) of a drive apparatus. The intermediate product comprising the substrate (3) and the disc hub (8) is centered on the base (1a) of the mould by cooperation between the base-centering means (17) and the disc-centering means (9). This may be effected by the use of an auxiliary centering means (12) which is in contact with a wall (14) of a central centering hole (11) in the disc hub (8) and with a wall (13) of a central centering recess (10) in the base (1A). Thus, the reproduction layer is cured in the position which is thus centered without any play, after which the substrate together with the disc hub is detached from the mould without the centering of the servo track on the substrate being disturbed.
摘要翻译： 本发明涉及一种提供具有居中的光学可检测结构的衬底的方法，例如在光学信息盘的传输衬底上的伺服结构。 该方法使用具有承载模具结构（2）的基部（1A）的模具（1），该模具结构（2）被透明的可辐射固化树脂的再生层（4）覆盖，其在固化之后与模具一起脱离 基质。 在其中心，模具的基部（1A）设置有基准中心装置（7），模具结构相对于其准确地居中。 在将其放置在模具上之前，基板（3）设置有盘毂（8），该盘毂包括单独的盘定心装置（9），其用于使完成的信息盘（17）在驱动轴（27）上居中 驱动装置。 包括基板（3）和盘毂（8）的中间产品通过基准定中心装置（17）和圆盘定心装置（9）之间的配合在模具的基座（1a）上居中。 这可以通过使用与盘毂（8）中的中心定心孔（11）的壁（14）接触的辅助定心装置（12）和中心定位装置（12）的中心 定心凹槽（10）在基座（1A）中。 因此，再现层被固化在如此居中的位置，而不会发生任何间隙，之后基板与盘毂一起从模具上拆下，而不会使基板上的伺服轨道对中受干扰。
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公开(公告)号：US4622661A
公开(公告)日：1986-11-11
申请号：US700233
申请日：1985-02-11
CPC分类号： G11B7/24015 , Y10T74/211
摘要： An interchangeable optically readable storage disk has a substrate with a recording surface, and a cover thereon which may comprise a second substrate with a further recording layer. The disk includes a protecting arrangement at the circumference of the substrate, which includes a balancing arrangement. The balancing may be effected by apertures in the protecting arrangement, or balancing masses affixed thereto.
摘要翻译： 可互换的光学可读存储盘具有带有记录表面的基板和其上的盖，其可以包括具有另外的记录层的第二基板。 盘包括在衬底的圆周处的保护装置，其包括平衡装置。 平衡可以通过保护装置中的孔或者固定在其上的平衡块来实现。
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