公开(公告)号：US08503281B2

公开(公告)日：2013-08-06

申请号：US13581724

申请日：2011-02-02

申请人： Tatsuo Mikami ,  Toshiyuki Kitahara

发明人： Tatsuo Mikami ,  Toshiyuki Kitahara

IPC分类号： G11B3/70

CPC分类号： G11B7/24038 ,  G11B7/0938

摘要： An optical recording disc comprises: at least ten optical recording layers; a plurality of intermediate layers each interposed between adjacent optical recording layers; a base film configured to support the optical recording layers and the intermediate layers; a cover layer disposed opposite to the base film with the optical recording layers and the intermediate layers interposed therebetween. The optical recording disc is in the shape of a disc as a whole. The total thickness of the optical recording disc is not more than 300 micrometers, and the optical recording disc provides flexibility.

摘要翻译： 光记录盘包括：至少十个光记录层; 多个中间层，每个介于相邻的光学记录层之间; 配置为支撑光记录层和中间层的基膜; 与基底膜相对设置的覆盖层，其中光记录层和介于其间的中间层。 光记录盘整体上是圆盘的形状。 光记录盘的总厚度不大于300微米，光记录盘提供灵活性。

公开(公告)号：US20100233414A1

公开(公告)日：2010-09-16

申请号：US12720183

申请日：2010-03-09

申请人： Toshio ISHIDA ,  Katsuhiko MEGURO ,  Toshiyuki KITAHARA

发明人： Toshio ISHIDA ,  Katsuhiko MEGURO ,  Toshiyuki KITAHARA

IPC分类号： B32B3/02 ,  B32B38/00

CPC分类号： B32B38/1808 ,  B32B38/0004 ,  B32B38/1858 ,  B32B2037/243 ,  B32B2038/042 ,  B32B2429/02 ,  G11B7/24038 ,  G11B7/26 ,  G11B7/266 ,  Y10T156/1075 ,  Y10T428/21

摘要： A multilayer optical recording medium includes: a substrate; a plurality of optical recording layers provided on the substrate; and a plurality of intermediate layers each provided between adjoining optical recording layers disposed in a thickness direction. In this multilayer optical recording medium, each of the intermediate layers has a birefringence property and a principal axis direction of birefringence of each intermediate layer is oriented at 90 degrees with respect to that of an adjoining intermediate layer.

摘要翻译： 多层光记录介质包括：基板; 设置在基板上的多个光记录层; 以及多个中间层，每个中间层设置在沿厚度方向设置的相邻的光学记录层之间。 在这种多层光学记录介质中，每个中间层具有双折射性质，并且每个中间层的双折射的主轴方向相对于相邻中间层的双折射取向为90度。

公开(公告)号：US07564640B2

公开(公告)日：2009-07-21

申请号：US12100935

申请日：2008-04-10

申请人： Toshiyuki Kitahara

发明人： Toshiyuki Kitahara

IPC分类号： G11B21/04

CPC分类号： G11B15/43

摘要： A magnetic tape drive includes a magnetic head configured to read or write data on a magnetic tape, a transport unit configured to drive the magnetic tape past the magnetic head, a speed detector configured to obtain speed information related to a transport speed of the magnetic tape, a vibrator configured to vibrate the magnetic head, and a controller configured to carry out control over the vibrator based upon the speed information obtained by the speed detector. The controller determines whether the transport speed of the magnetic tape is not lower than a predetermined value, based upon the speed information, starts operation of the vibrator in response to a determination that the transport speed is lower than the predetermined value, and stops the operation of the vibrator in response to a determination that the transport speed is not lower than the predetermined value.

摘要翻译： 磁带驱动器包括被配置为在磁带上读取或写入数据的磁头，被配置为驱动磁带经过磁头的传送单元，被配置为获得与磁带的传输速度相关的速度信息的速度检测器 ，配置为使磁头振动的振动器，以及配置为基于由速度检测器获得的速度信息对振动器进行控制的控制器。 控制器基于速度信息确定磁带的传送速度是否不低于预定值，响应于传送速度低于预定值的确定开始振动器的操作，并停止操作 响应于确定传送速度不低于预定值的振动器。

公开(公告)号：US07095582B2

公开(公告)日：2006-08-22

申请号：US10688931

申请日：2003-10-21

申请人： Toshiyuki Kitahara

发明人： Toshiyuki Kitahara

IPC分类号： G11B5/584

CPC分类号： G11B5/4893 ,  G11B5/00813 ,  G11B5/584

摘要： A magnetic tape drive has a servo head for performing the tracking control and a head unit. The head unit includes a recording head group composed of a plurality of recording heads, which are lined up along the width directions with respect to a magnetic tape. In this head unit, the distance between the recording heads is the same distance as the distance between adjacent data tracks to be formed on the magnetic tape, and the azimuth angle of each recording heads differs with each other. A plurality of data tracks are simultaneously formed on the magnetic tape using a plurality of recording heads, respectively, when performing the recording of data on the magnetic tape.

摘要翻译： 磁带驱动器具有用于执行跟踪控制的伺服头和头单元。 头单元包括由多个记录头构成的记录头组，它们相对于磁带沿宽度方向排成一列。 在该头单元中，记录头之间的距离与要在磁带上形成的相邻数据轨道之间的距离相同，并且每个记录头的方位角彼此不同。 当在磁带上执行数据记录时，分别使用多个记录头在磁带上同时形成多个数据磁道。

公开(公告)号：US06767610B2

公开(公告)日：2004-07-27

申请号：US10020284

申请日：2001-12-14

申请人： Masatoshi Takahashi ,  Minoru Sueki ,  Toshiyuki Kitahara

发明人： Masatoshi Takahashi ,  Minoru Sueki ,  Toshiyuki Kitahara

IPC分类号： G11B566

CPC分类号： G11B5/7305 ,  Y10S428/90

摘要： A magnetic tape includes: a back coating layer containing a carbon black; a support; a non-magnetic layer containing a non-magnetic powder and a binder, which is substantially non-magnetic; and a magnetic layer containing a ferromagnetic powder and a binder, in this order, wherein the magnetic tape is a magnetic tape for recording a signal with a 10 to 100 Mbit/cm2 surface recording density; the magnetic tape has a temperature expansion coefficient in a width direction thereof of a 0.0015%/° C. or less, a humidity expansion coefficient of 0.0015%/% RH or less, an offset yield strength in a longitudinal direction thereof of 10N or more, a rupture strength of 30 N or more; and the support has a center plane average roughness on a coating surface side of the magnetic layer of 1.0 nm or less, a center plane average roughness on a coating surface side of the back coating layer of 3.0 to 9.0 nm, and projections having a 273 nm or more height existing on the coating surface side of the magnetic layer of 10 pieces/100 cm2 or less.

摘要翻译： 磁带包括：含有炭黑的背涂层; 一个支持 含有非磁性粉末和粘合剂的非磁性层，其基本上是非磁性的; 以及含有铁磁粉末和粘合剂的磁性层，其中磁带是用于记录10至100Mbit / cm 2表面记录密度的信号的磁带; 磁带的宽度方向的温度膨胀系数为0.0015％/℃以下，湿度膨胀系数为0.0015％/％RH以下，其长度方向的偏移屈服强度为10N以上 ，断裂强度为30N以上; 并且支撑体在磁性层的涂布面侧的中心面平均粗糙度为1.0nm以下，背面涂层的涂布面侧的中心面平均粗糙度为3.0〜9.0nm，突起为273 存在于磁性层的涂层表面侧上的10个/ 100cm 2或更小的高度或更多的高度。

公开(公告)号：US06251509B1

公开(公告)日：2001-06-26

申请号：US09255721

申请日：1999-02-23

申请人： Toshio Kawamata ,  Toshiyuki Kitahara ,  Minoru Sueki

发明人： Toshio Kawamata ,  Toshiyuki Kitahara ,  Minoru Sueki

IPC分类号： G11B5706

CPC分类号： G11B5/70 ,  G11B5/735 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/265

摘要： A magnetic tape favorably employable for recording computer data has a support, and on one side of the support, a essentially non-magnetic layer composed of a non-magnetic powder and a binder, and a magnetic layer composed of a ferromagnetic powder and a binder superposed in order, and on the other side, a back-coating layer containing carbon black, wherein the magnetic layer has a thickness of 0.08 to 0.28 &mgr;m and a magnetic flux of 0.02 to 0.1 G·cm.

摘要翻译： 可用于记录计算机数据的磁带具有支撑，并且在支撑体的一侧上，由非磁性粉末和粘合剂构成的基本上非磁性的层以及由铁磁性粉末和粘合剂构成的磁性层 并且另一方面是含有炭黑的背涂层，其中磁性层的厚度为0.08至0.28μm，磁通量为0.02至0.1G.cm。

公开(公告)号：US5196265A

公开(公告)日：1993-03-23

申请号：US772748

申请日：1991-10-07

申请人： Katsumi Ryoke ,  Yutaka Kakuishi ,  Toshiyuki Kitahara

发明人： Katsumi Ryoke ,  Yutaka Kakuishi ,  Toshiyuki Kitahara

IPC分类号： C09D5/23 ,  C09D7/12 ,  G11B5/73

CPC分类号： G11B5/7305 ,  Y10S428/90 ,  Y10T428/12931 ,  Y10T428/12937 ,  Y10T428/26 ,  Y10T428/31786

摘要： A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer containing a ferromagnetic powder and a binder, the non-magnetic support comprising polyethylene naphthalate in which Young's modulus in the transversal direction is at least 700 kg/mm.sup.2 and Young's modulus in the mechanical direction is less than 800 kg/mm.sup.2, the ferromagnetic powder being magnetic metal powder, and the total thickness of the magnetic recording material being not more than 11 .mu.m.

摘要翻译： 一种磁记录介质，包括其上具有含有铁磁性粉末和粘合剂的磁性层的非磁性载体，所述非磁性载体包含聚萘二甲酸乙二醇酯，其中横向的杨氏模量为至少700kg / mm 2，杨氏模量为 机械方向小于800kg / mm2，铁磁粉末为磁性金属粉末，磁记录材料的总厚度不大于11μm。

公开(公告)号：US20100238774A1

公开(公告)日：2010-09-23

申请号：US12724097

申请日：2010-03-15

申请人： Toshiyuki KITAHARA

发明人： Toshiyuki KITAHARA

IPC分类号： G11B19/00 ,  G11B7/00 ,  G11B7/135

CPC分类号： G11B7/00736 ,  B82Y10/00 ,  G11B7/00455 ,  G11B7/1263 ,  G11B2007/0013 ,  G11B2007/24624

摘要： To record information as an array of optically changed portions arranged along a track in an optical storage medium, a pulsed laser beam is emitted toward the optical storage medium while causing at least one of the optical storage medium and the pulsed laser beam to be moved relative to each other. A plurality of pulses of the pulsed laser beam are emitted during a time span in which one segment of the track having a length corresponding to a length of one optically changed portion is scanned with the pulsed laser beam. An intensity of light with which a segment of the track is to be illuminated to form each individual optically changed portion is adjusted by causing a shutter to selectively reduce the number of pulses of the pulsed laser beam with which the segment of the track is to be illuminated.

摘要翻译： 为了将信息记录为沿着光存储介质中的轨道排列的光学变化部分的阵列，脉冲激光束朝向光存储介质发射，同时使光存储介质和脉冲激光束中的至少一个相对移动 对彼此。 脉冲激光束的多个脉冲在时间跨度期间被发射，其中具有对应于一个光学变化部分的长度的轨道的一个段被脉冲激光束扫描。 通过使快门选择性地减少轨道段所在的脉冲激光束的脉冲数来调节轨道的一部分被照亮以形成每个单独光学变化部分的光强度 照亮

公开(公告)号：US07207052B2

公开(公告)日：2007-04-17

申请号：US10644758

申请日：2003-08-21

申请人： Toshiyuki Kitahara

发明人： Toshiyuki Kitahara

IPC分类号： G11B15/18

CPC分类号： G11B20/00876 ,  G11B5/00813 ,  G11B5/78 ,  G11B7/00736 ,  G11B7/0079 ,  G11B11/10584 ,  G11B15/04 ,  G11B15/07 ,  G11B20/00086 ,  G11B23/042 ,  G11B23/107 ,  G11B27/11 ,  G11B2005/001 ,  G11B2020/1259 ,  G11B2220/211 ,  G11B2220/2525 ,  G11B2220/655 ,  G11B2220/90

摘要： To provide a recording-medium cartridge and a recording-and-reproducing device in which a write-once area and a re-writable area can exist together. By controlling recording-and-reproducing device 11 based on the information showing the re-writable area and the write-once area stored in management information of cartridge memory 9 and by recording on the magnetic tape MT, co-existence of the re-writable area and the write-once area on the magnetic tape MT is achieved.

摘要翻译： 为了提供记录介质盒和记录和再现装置，其中一次写入区域和可重写区域可以一起存在。 通过基于存储在盒式存储器9的管理信息中的可重写区域和一次写入区域的信息控制记录和再现装置11，并且通过在磁带MT上记录可重写的 区域和磁带MT上的一次写入区域。

公开(公告)号：US5512350A

公开(公告)日：1996-04-30

申请号：US441009

申请日：1995-05-15

申请人： Katsumi Ryoke ,  Katsuhiko Meguro ,  Hiroaki Doushita ,  Masaki Suzuki ,  Toshiyuki Kitahara ,  Masami Sato

发明人： Katsumi Ryoke ,  Katsuhiko Meguro ,  Hiroaki Doushita ,  Masaki Suzuki ,  Toshiyuki Kitahara ,  Masami Sato

IPC分类号： G11B5/708 ,  G11B5/84 ,  G11B5/00

CPC分类号： G11B5/7085 ,  G11B5/84 ,  Y10T428/24355 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/257

摘要： A magnetic recording medium comprises a magnetic layer containing a ferromagnetic powder, a binder and an abrasive material having a Mohs hardness of 8 or more on a non-magnetic support, wherein the average protrusion height, which represents the length between the central line of the surface roughness of the sectional curve of the magnetic layer and the upper end of the abrasive material existing (i) above the central line of the surface roughness of the magnetic layer and (ii) in the surface layer of the magnetic layer, is 15 nm or less. A process for preparing the magnetic recording medium comprises coating on a non-magnetic support a magnetic layer containing a ferromagnetic powder, a binder and an abrasive material having a Mohs hardness of 8 or more, and then polishing the surface of the magnetic layer with an abrasive tape, wherein as the abrasive tape there is used one containing at least one abrasive material having a higher Mohs hardness than the abrasive material to be incorporated in the magnetic layer.

摘要翻译： 磁记录介质包括在非磁性载体上含有铁磁粉末，粘结剂和莫氏硬度为8或更高的研磨材料的磁性层，其中平均突出高度代表 磁性层和磁性层的表面粗糙度的中心线上方存在的（i）磁性层的截面曲线的表面粗糙度和（ii）在磁性层的表面层中的表面粗糙度为15nm 或更少。 制备磁记录介质的方法包括在非磁性载体上涂覆含有铁磁粉末，粘合剂和莫氏硬度为8或更高的研磨材料的磁性层，然后用 研磨带，其中作为研磨带，使用含有至少一种摩擦硬度高于被加入磁性层的研磨材料的磨料的磨料。