公开(公告)号：US20120156524A1

公开(公告)日：2012-06-21

申请号：US13330219

申请日：2011-12-19

申请人： Shinji KAWAKAMI ,  Sadamu KUSE ,  Kenji TANAKA

发明人： Shinji KAWAKAMI ,  Sadamu KUSE ,  Kenji TANAKA

IPC分类号： G11B5/65

CPC分类号： G11B5/714 ,  G11B5/70 ,  G11B5/70678

摘要： The magnetic recording medium of the present invention comprises: a non-magnetic substrate; a non-magnetic layer formed on one of principal surfaces of the non-magnetic substrate; and a magnetic layer formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate. Mr and t satisfy 0.0020 μT·m≦Mr·t≦0.0150 μT·m, where Mr is the residual magnetic flux density of the magnetic layer, and t is the average thickness of the magnetic layer, L1 satisfies 2 nm≦L1≦6 nm, where L1 is the average thickness of a first mixed layer that is formed on the surface of the magnetic layer opposite to the non-magnetic layer, and L2 satisfies 0.1≦L2/t≦0.45, where L2 is the average thickness of a second mixed layer that is formed on the surface of the magnetic layer facing the non-magnetic layer.

摘要翻译： 本发明的磁记录介质包括：非磁性基片; 形成在非磁性基板的一个主表面上的非磁性层; 以及形成在与非磁性基板相对的非磁性层的主表面上的磁性层。 Mr和t满足0.0020μT·m＆nlE; Mr·t＆nlE; 0.0150μT·m，其中Mr是磁性层的剩余磁通密度，t是磁性层的平均厚度，L1满足2nm＆nlE; L1＆nlE; 6 nm，其中L1是形成在与非磁性层相反的磁性层的表面上的第一混合层的平均厚度，并且L2满足0.1＆lt; lE; L2 / t＆nlE; 0.45，其中L2是 形成在面向非磁性层的磁性层的表面上的第二混合层。

公开(公告)号：US08081559B2

公开(公告)日：2011-12-20

申请号：US11960439

申请日：2007-12-19

申请人： Masao Fujita ,  Kenji Tanaka ,  Shinji Kawakami ,  Sadamu Kuse

发明人： Masao Fujita ,  Kenji Tanaka ,  Shinji Kawakami ,  Sadamu Kuse

IPC分类号： G11B7/00

CPC分类号： G11B5/584 ,  G11B5/59677

摘要： The present invention provides a recording and reproducing apparatus that can perform high-precision tracking servo control by removing noise from detected servo signals. The recording and reproducing apparatus performs tracking servo control while reading servo signals 10 that are formed on a surface 9 of a recording medium 2 so as to produce optical contrast, the apparatus including a modulated irradiator 20 for irradiating the servo signals 10 with a light beam, the intensity of the light beam being modulated by a modulating wave that is frequency-modulated; a photoelectric converter 30 for converting reflected light from the servo signals 10 into electric signals; and a synchronous demodulator 15 for subjecting the electrical signal to synchronous demodulation using the modulating wave as a reference wave.

摘要翻译： 本发明提供了一种通过从检测到的伺服信号中去除噪声来执行高精度跟踪伺服控制的记录和再现装置。 记录和重放装置执行跟踪伺服控制，同时读取形成在记录介质2的表面9上的伺服信号10以便产生光学对比度，该装置包括调制辐射器20，用于用光束照射伺服信号10 光束的强度由被调制的调制波调制; 用于将来自伺服信号10的反射光转换为电信号的光电转换器30; 以及用于使用调制波作为参考波对电信号进行同步解调的同步解调器15。

公开(公告)号：US08027115B2

公开(公告)日：2011-09-27

申请号：US12213055

申请日：2008-06-13

申请人： Masao Fujita ,  Kenji Tanaka ,  Sadamu Kuse

发明人： Masao Fujita ,  Kenji Tanaka ,  Sadamu Kuse

IPC分类号： G11B5/02 ,  G11B5/09 ,  H04N5/77

CPC分类号： G11B27/034 ,  G06F3/0601 ,  G06F2003/0698 ,  G11B2220/95 ,  H04N5/77 ,  H04N5/775 ,  H04N5/782 ,  H04N9/8042

摘要： A data recording apparatus and a data recording system of the present invention includes buffer memories 2a to 2c that accumulate data in a plurality of channels transferred from an external appliance on a channel basis, a data selector 3 that reads the data accumulated in the buffer memories 2a to 2c, and a data drive 4 that records the data read by the data selector 3 onto a magnetic tape, wherein the data selector 3 selectively reads the data accumulated in the buffer memories 2a to 2c, and outputs the data in an order of recording onto a magnetic tape in the tape drive 4. According to such a configuration, a data recording apparatus that can be realized at low cost and a recording system using the data recording apparatus can be provided.

摘要翻译： 本发明的数据记录装置和数据记录系统包括：缓冲存储器2a至2c，其累积从外部设备在信道上传送的多个信道中的数据;数据选择器3，其读取累积在缓冲存储器中的数据 以及数据驱动器4，其将由数据选择器3读取的数据记录到磁带上，其中数据选择器3选择性地读取累积在缓冲存储器2a至2c中的数据，并按照 记录在磁带驱动器4中的磁带上。根据这种配置，可以提供可以以低成本实现的数据记录装置和使用数据记录装置的记录系统。

公开(公告)号：US07871717B2

公开(公告)日：2011-01-18

申请号：US11584588

申请日：2006-10-23

申请人： Tomoki Inakura ,  Noriaki Otani ,  Sadamu Kuse

发明人： Tomoki Inakura ,  Noriaki Otani ,  Sadamu Kuse

IPC分类号： B32B9/04 ,  B05D1/36

CPC分类号： G02B1/11 ,  C08K3/22 ,  C09D5/00 ,  C09D7/61 ,  G02B1/105 ,  G02B1/14 ,  G02B1/16 ,  G02B27/0006 ,  Y10T428/265 ,  Y10T428/31504

摘要： An optical film according to the present invention comprises a transparent base, and an anti-reflection layer that is disposed on one main face of the transparent base. The anti-reflection layer includes a hard coating layer, and a low refractive index layer that is disposed on the hard coating layer in this order from the side of the transparent base. The hard coating layer is formed using a resin containing an ionizing radiation setting resin. The hard coating layer contains a conductive metal oxide in an amount of at least 5 wt % and at most 30 wt % with respect to the total weight of the hard coating layer. The hard coating layer is formed using a coating solution containing water in an amount of at least 0.05 wt % and at most 5.0 wt %.

摘要翻译： 根据本发明的光学膜包括透明基底和设置在透明基底的一个主面上的抗反射层。 防反射层包括硬涂层和从透明基底侧依次设置在硬涂层上的低折射率层。 使用含有电离辐射固化树脂的树脂形成硬涂层。 硬涂层相对于硬涂层的总重量含有至少5重量％且至多30重量％的导电金属氧化物。 使用含有至少0.05重量％且至多5.0重量％的水的涂布溶液形成硬涂层。

公开(公告)号：US07593177B2

公开(公告)日：2009-09-22

申请号：US11771615

申请日：2007-06-29

申请人： Masao Okafuji ,  Tsugihiro Doi ,  Tetsutaro Inoue ,  Hiroyuki Mitsuhashi ,  Seigi Kawarai ,  Sadamu Kuse

发明人： Masao Okafuji ,  Tsugihiro Doi ,  Tetsutaro Inoue ,  Hiroyuki Mitsuhashi ,  Seigi Kawarai ,  Sadamu Kuse

IPC分类号： G11B5/09 ,  G11B5/584

CPC分类号： G11B5/584 ,  G11B5/00813 ,  G11B5/00878

摘要： In a recording/reproducing method of a magnetic tape in a tracking servo system, a recording density of each data track is increased while inhibiting occurrence of a recording/reproducing error caused by a size change of a magnetic tape in the width direction. Data tracks are each set to have a smaller track width stepwise as closer to servo tracks (41T-1 to 41T-5 etc.) in the width direction of a magnetic tape 1. With such a setting, the width of the data tracks (A1-41T-1 to A1-41T-5 etc.) closest to the servo tracks (41T-1 to 41T-5) can be minimized, thereby enabling a significant increase in number of the data tracks. Further, even when the size of the magnetic tape 1 changes in the width direction due to a change in external environment such as a temperature or moisture, to lead to large displacement of the data tracks (A8-41T-1 to A8-41T-5) distant from the servo tracks (41T-1 to 41T-5), the data head (A8) can be readily aligned to face the data tracks (A8-41T-1 to A8-41T-5) in the reproduction by an increased portion of the width size of the data tracks (A8-41T-1 to A8-41T-5), and it is thereby possible to ensure reading of data signals from the data tracks (A8-41T-1 to A8-41T-5) so as to improve reproduction accuracy.

摘要翻译： 在跟踪伺服系统中的磁带的记录/再现方法中，增加每个数据磁道的记录密度，同时抑制由磁带在宽度方向上的尺寸变化引起的记录/再现错误的发生。 数据磁道各自被设置为具有比磁带1的宽度方向更靠近伺服磁道（41T-1至41T-5等）的逐渐减小的轨道宽度。通过这样的设置，数据磁道的宽度 最靠近伺服磁道（41T-1至41T-5）的A1-41T-1至A1-41T-5等）可以最小化，从而可以显着增加数据磁道的数量。 此外，即使当磁带1的尺寸由于诸如温度或湿度等外部环境的变化而在宽度方向上变化时，为了导致数据磁道的大的位移（A8-41T-1至A8-41T- 5）远离伺服磁道（41T-1至41T-5），数据磁头（A8）可以容易地对准数据磁道（A8-41T-1到A8-41T-5） 数据磁道（A8-41T-1〜A8〜41T-5）的宽度尺寸的增加部分，从而可以确保从数据磁道读取数据信号（A8〜41T-1〜A8〜41T- 5），以提高再现精度。

公开(公告)号：US20090231752A1

公开(公告)日：2009-09-17

申请号：US12404962

申请日：2009-03-16

申请人： Yoshiaki Kudo ,  Sadamu Kuse

发明人： Yoshiaki Kudo ,  Sadamu Kuse

IPC分类号： G11B21/02

CPC分类号： G11B33/144 ,  G11B5/00821 ,  G11B5/40 ,  G11B5/455 ,  G11B15/62

摘要： A magnetic tape driving apparatus includes a magnetic head 2, a temperature/humidity sensor 4, a Peltier element 11, and a controller 15. The temperature/humidity sensor 4 that detects the temperature and humidity of the magnetic head 2 or in the vicinity thereof. The Peltier element 11 that cools the magnetic head 2 and in the vicinity thereof based on detection results of the temperature/humidity sensor 4. The controller 15 that controls the Peltier element 11 based on the temperature and humidity information obtained by the temperature/humidity sensor 4. The controller 15 controls the Peltier element 11 so as to decrease the temperature of the magnetic head 2 and in the vicinity thereof when the humidity of the magnetic head 2 or in the vicinity thereof that the temperature/humidity sensor 4 detects is less than a predetermined value. By adopting this sort of configuration, it is possible to suppress an increase in error rate even in a low humidity environment.

摘要翻译： 磁带驱动装置包括磁头2，温度/湿度传感器4，珀耳帖元件11和控制器15.检测磁头2或其附近的温度和湿度的温度/湿度传感器4 。 基于温度/湿度传感器4的检测结果冷却磁头2及其附近的珀耳帖元件11.控制器15根据由温度/湿度传感器获得的温度和湿度信息来控制珀耳帖元件11 当温度/湿度传感器4检测到的磁头2的湿度或其附近，控制器15控制珀尔帖元件11，以便降低磁头2的温度和附近的温度。 预定值。 通过采用这种配置，即使在低湿度环境下也可以抑制误码率的增加。

公开(公告)号：US20080297941A1

公开(公告)日：2008-12-04

申请号：US12128156

申请日：2008-05-28

申请人： Masao FUJITA ,  Kenji TANAKA ,  Sadamu KUSE

发明人： Masao FUJITA ,  Kenji TANAKA ,  Sadamu KUSE

IPC分类号： G11B21/02

CPC分类号： G11B5/00813 ,  G11B5/02 ,  G11B5/022 ,  G11B2005/0005

摘要： A data recording apparatus of the present invention includes a head that records data signals by magnetizing a magnetic tape 10 and a recording control portion that controls the recording operation by causing recording current to flow to the head. The recording control portion controls the operation of the head, so that in the magnetic tape 10, which is direct current demagnetized continuously in the longitudinal direction, a magnetic field is formed intermittently in an opposite direction to the magnetization direction of the direct current demagnetization. Thus, when recording data signals on the magnetic recording medium, it is possible to make the current flowing to the head small and to realize apparatus power consumption reductions, load reductions for the head and circuitry, and reduction in crosstalk noise from the head chip used for writing to the head chip used for reading.

摘要翻译： 本发明的数据记录装置包括通过磁化磁带10记录数据信号的磁头和通过使记录电流流向磁头而控制记录操作的记录控制部分。 记录控制部分控制磁头的操作，使得在沿着纵向方向连续地退磁的磁带10中，在与直流退磁的磁化方向相反的方向间歇地形成磁场。 因此，当在磁记录介质上记录数据信号时，可以使流过头部的电流变小，并实现设备功耗降低，头部和电路的负载降低，以及减少来自头部芯片的串扰噪声 用于写入用于阅读的头部芯片。

公开(公告)号：US20080070066A1

公开(公告)日：2008-03-20

申请号：US11898757

申请日：2007-09-14

申请人： Hisanobu Mikamo ,  Hidekazu Kawatoko ,  Makoto Shiokawa ,  Shinji Kawakami ,  Masanori Yamasaki ,  Hitoshi Tsukamoto ,  Sadamu Kuse

发明人： Hisanobu Mikamo ,  Hidekazu Kawatoko ,  Makoto Shiokawa ,  Shinji Kawakami ,  Masanori Yamasaki ,  Hitoshi Tsukamoto ,  Sadamu Kuse

IPC分类号： G11B5/842 ,  B05D5/12

CPC分类号： G11B5/842

摘要： A method for manufacturing a magnetic recording medium of the present invention includes a magnetic layer forming step in which a drying process is performed. The drying process includes: a pre-heating stage in which a magnetic coating film is heated until the surface temperature of the magnetic coating film stops rising and reaches a substantially constant temperature; a constant rate drying stage that is performed after the pre-heating stage in which the surface temperature of the magnetic coating film is held substantially constant; and a falling rate drying stage that is performed after the constant rate drying stage in which the surface temperature of the magnetic coating film is increased to be higher than the surface temperature during the constant rate drying stage to harden the magnetic coating film. The constant rate drying period in which the constant rate drying stage is performed is 0.2 seconds or more. The first solvent is made of one solvent or two or more solvents having different boiling points, and the difference (Tb−Ts) between the boiling point Tb of the solvent having the lowest boiling point among the solvents contained in the first solvent and the surface temperature Ts of the magnetic coating film during the constant rate drying period is 1 to 50° C.

摘要翻译： 本发明的磁记录介质的制造方法包括进行干燥处理的磁性层形成工序。 干燥过程包括：预热阶段，其中加热磁性涂膜直到磁性涂膜的表面温度停止上升并达到基本恒定的温度; 在预热阶段之后进行恒定速率干燥阶段，其中磁性涂膜的表面温度保持在大致恒定的范围; 以及在恒速干燥阶段之后，在恒速干燥阶段使磁性涂膜的表面温度升高到高于表面温度的固定速率干燥阶段之后进行硬化处理的落下率干燥阶段。 进行恒定速率干燥阶段的恒定速率干燥时间为0.2秒以上。 第一溶剂由一种溶剂或两种或更多种沸点不同的溶剂制成，沸点T < 在恒定速率干燥期间，第一溶剂中所含溶剂中具有最低沸点的溶剂的b b和磁性涂膜的表面温度T S 1 / S 2为1〜50℃ C。

公开(公告)号：US20070159722A1

公开(公告)日：2007-07-12

申请号：US11688179

申请日：2007-03-19

申请人： Sadamu KUSE ,  Tsugihiro Doi ,  Tetsutaro Inoue ,  Mikio Kishimoto ,  Yuji Sasaki ,  Hideaki Watanabe

发明人： Sadamu KUSE ,  Tsugihiro Doi ,  Tetsutaro Inoue ,  Mikio Kishimoto ,  Yuji Sasaki ,  Hideaki Watanabe

IPC分类号： G11B5/78 ,  G11B5/584 ,  G11B5/708

CPC分类号： B82Y25/00 ,  G11B5/584 ,  G11B5/70 ,  G11B5/70615 ,  G11B5/70621 ,  G11B5/712 ,  G11B5/714 ,  G11B5/716 ,  G11B5/735 ,  G11B5/738 ,  G11B5/78 ,  G11B23/107 ,  H01F1/0054 ,  H01F1/0551 ,  H01F1/059 ,  Y10T428/1107 ,  Y10T428/2991

摘要： A magnetic recording medium comprising a non-magnetic support, at least one primer layer formed on one surface of the non-magnetic support, comprising a non-magnetic powder and a binder resin, at least one magnetic layer formed on the primer layer, comprising a magnetic powder and a binder resin, and a back layer formed on the other surface of the non-magnetic support, wherein the magnetic powder contained in the uppermost layer of the magnetic layer is a rare earth metal-iron type magnetic powder of substantially spherical or ellipsoidal particles comprising a rare earth element and iron or a transition metal which comprises iron, and has a number average particle size of 5 to 50 nm and an average axis ratio of 1 to 2, and the total thickness of the magnetic recording medium is less than 6 μm. This magnetic recording medium can achieve an excellent block error rate, which cannot be realized with magnetic recording media comprising conventional acicular magnetic powders.

摘要翻译： 一种包含非磁性载体的磁记录介质，至少一个形成在所述非磁性载体的一个表面上的底层，包含非磁性粉末和粘合剂树脂，所述至少一个磁性层形成在所述底漆层上，包括 磁性粉末和粘合剂树脂，以及形成在非磁性载体的另一个表面上的背层，其中包含在磁性层的最上层中的磁粉是基本上为球形的稀土金属 - 铁型磁性粉末 或包含稀土元素和铁的过渡金属的椭圆体颗粒或包含铁的过渡金属，并且其数均粒径为5〜50nm，平均轴比为1〜2，磁记录介质的总厚度为 少于6个妈妈。 该磁记录介质可以实现优异的块错误率，这是由包含传统针状磁粉的磁记录介质所不能实现的。

公开(公告)号：US20060027692A1

公开(公告)日：2006-02-09

申请号：US11194454

申请日：2005-08-02

申请人： Motoya Miura ,  Yasuo Inugai ,  Shigeru Yasuda ,  Shihoko Takashima ,  Sadamu Kuse

发明人： Motoya Miura ,  Yasuo Inugai ,  Shigeru Yasuda ,  Shihoko Takashima ,  Sadamu Kuse

IPC分类号： G11B23/087

CPC分类号： G11B23/107 ,  G11B23/037

摘要： In a single-reel type tape cartridge of a servo tracking system in which signal recording is performed, a tape reel capable of eliminating edge projection during tape winding and achieving high recording density of a magnetic tape and a magnetic tape cartridge for housing the tape reel is provided. The tape reel is provided with a cylindrical hub around which the magnetic tape is wound and a pair of upper and lower flanges. The average value of the thickness of a reference flange that receives the tape edge of the magnetic tape during tape winding is set greater than the average value of the thickness of the opposite flange. The tape receiving surface of the reference flange is formed into an inclined surface, and three or more air escape recess portions are formed on the tape receiving surface. The depth of each air escape recess portion is set not smaller than 0.05 mm and not greater than 0.40 mm. The occupation area of all the air escape recess portions is set to 30% to 80% of the total area of the reference flange. Such tape reel is housed in a magnetic tape cartridge.