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1. 发明授权

US5196265A Magnetic recording medium 失效
标题翻译：磁记录介质
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。

2. 发明授权

US5407725A Magnetic recording medium having a magnetic layer containing two carbon blacks each within specific particle size and DBP adsorption ranges 失效
标题翻译：磁记录介质具有含有特定粒径和DBP吸附范围的两个碳黑的磁性层
公开(公告)号：US5407725A
公开(公告)日：1995-04-18
申请号：US184347
申请日：1994-01-21
申请人： Katsumi Ryoke , Yutaka Kakuishi , Toshiyuki Kitahara , Tetsuji Nishida
发明人： Katsumi Ryoke , Yutaka Kakuishi , Toshiyuki Kitahara , Tetsuji Nishida
IPC分类号： C09D5/23 , C09D127/06 , C09D175/04 , G11B5/708 , G11B5/73 , G11B5/00
CPC分类号： G11B5/708 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/2982 , Y10T428/30
摘要： A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer comprising a ferromagnetic powder and a binder resin is disclosed. The magnetic layer contains a first carbon black having a DBP absorption of from 40 to 120 ml/100 g and a second carbon black having a DBP absorption of from 140 to 200 ml/100 g. Both carbon black have an average particle size of from 5 to 35 m.mu.. The medium maintains a high output level and has excellent running stability. Therefore, the dropout due to abrasion caused by an increase in friction coefficient and output reduction due to head clogging, can be avoided.
摘要翻译：公开了一种包括其上具有包含铁磁粉末和粘合剂树脂的磁性层的非磁性载体的磁记录介质。磁性层含有DBP吸收为40〜120ml / 100g的第一炭黑和DBP吸收为140〜200ml / 100g的第二炭黑。两种炭黑的平均粒径为5〜35μm。介质保持高输出水平，运行稳定性好。因此，可以避免由于摩擦系数的增加和由于头部堵塞引起的输出减少而引起的磨损引起的压差。

3. 发明授权

US5326618A Magnetic recording medium and process for production thereof 失效
标题翻译：磁记录介质及其生产方法
公开(公告)号：US5326618A
公开(公告)日：1994-07-05
申请号：US858189
申请日：1992-03-26
申请人： Katsumi Ryoke , Yutaka Kakuishi , Toshiyuki Kitahara , Akihiro Matsufuji
发明人： Katsumi Ryoke , Yutaka Kakuishi , Toshiyuki Kitahara , Akihiro Matsufuji
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/708 , G11B5/714 , G11B5/716 , G11B5/84 , G11B5/842 , B32B3/10 , B32B5/16 , B32B7/02 , G11B5/66
CPC分类号： G11B5/708 , G11B5/714 , G11B5/84 , Y10T428/24355 , Y10T428/24942 , Y10T428/2495 , Y10T428/25 , Y10T428/257
摘要： A magnetic recording medium is described comprising a nonmagnetic support having formed thereon a magnetic layer containing a ferromagnetic powder, an abrasive, and a binder, wherein the ferromagnetic powder is a metal magnetic powder having a crystallite size of not larger than 200 .ANG., the abrasive comprises (i) an inorganic powder having a Mohs' hardness of more than 9 and a mean particle size of 0.1 to 0.9 .mu.m which is contained in an amount of from 0.1 to 10 parts by weight per 100 parts by weight of the ferromagnetic powder, and a center-line average surface roughness (Ra) of the magnetic layer is less than 5 nm. The magnetic recording medium exhibits improved properties in C/N, running durability and drop-out. A process of producing the recording medium is also disclosed involving a calender treatment with at least one pair of metal rolls.
摘要翻译：描述了一种磁记录介质，其包括在其上形成有含有铁磁粉末，研磨剂和粘合剂的磁性层的非磁性载体，其中铁磁性粉末是微晶尺寸不大于200的金属磁性粉末，包括（i）莫氏硬度大于9的平均粒度为0.1〜0.9μm的无机粉末，相对于每100重量份的铁磁性粉末为0.1〜10重量份，磁性层的中心线平均表面粗糙度（Ra）小于5nm。磁记录介质具有改善的C / N性能，运行耐久性和脱落性。还公开了一种制备记录介质的方法，其涉及使用至少一对金属辊进行压延处理。

4. 发明授权

US5512350A Magnetic recording medium having a magnetic layer with a specified surface roughness and which contains ferromagnetic powder, binder, and an abrasive 失效
标题翻译：磁记录介质具有特定表面粗糙度的磁性层，并含有铁磁粉末，粘合剂和研磨剂
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。

5. 发明申请

US20120320726A1 OPTICAL RECORDING DISC AND METHOD FOR RECORDING OR READING DATA ON THE OPTICAL RECORDING DISC 有权
标题翻译：用于在光记录盘上记录或读取数据的光记录盘和方法
公开(公告)号：US20120320726A1
公开(公告)日：2012-12-20
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： G11B7/24 , G11B7/00
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。

6. 发明授权

US07207052B2 Recording medium cartridge and recording and reproducing device 有权
标题翻译：记录介质盒和记录和再现装置
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。

7. 发明授权

US08427915B2 Method and apparatus for recording information in optical storage medium, and multi-layer optical storage medium 有权
标题翻译：用于在光学存储介质中记录信息的方法和装置，以及多层光学存储介质
公开(公告)号：US08427915B2
公开(公告)日：2013-04-23
申请号：US12724097
申请日：2010-03-15
申请人： Toshiyuki Kitahara
发明人： Toshiyuki Kitahara
IPC分类号： G11B20/10 , G11B7/135 , G11B7/00
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

8. 发明申请

US20050286157A1 Magnetic tape drive 有权
标题翻译：磁带机
公开(公告)号：US20050286157A1
公开(公告)日：2005-12-29
申请号：US10876017
申请日：2004-06-25
申请人： Toshiyuki Kitahara
发明人： Toshiyuki Kitahara
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A magnetic tape drive of the present invention is the drive that has a head unit comprising a servo head for trackings and a recording head group, which comprises a plurality of data signal recording heads, wherein the plurality of the data signal recording heads are formed at a pitch corresponding to that of adjacent data tracks on a magnetic tape, and wherein a plurality of adjacent data tracks are simultaneously formed on the magnetic tape with the plurality of the data signal recording heads.
摘要翻译：本发明的磁带驱动器是具有包括用于跟踪的伺服头和头记录头的头单元的驱动器，其包括多个数据信号记录头，其中多个数据信号记录头形成在与磁带上的相邻数据磁道相对应的音调，并且其中多个相邻数据磁道与多个数据信号记录头同时形成在磁带上。

9. 发明授权

US5804283A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5804283A
公开(公告)日：1998-09-08
申请号：US968860
申请日：1997-11-05
申请人： Hiroo Inaba , Masaki Suzuki , Naoto Abe , Toshiyuki Kitahara , Satoshi Matsubaguchi , Hiroaki Takano
发明人： Hiroo Inaba , Masaki Suzuki , Naoto Abe , Toshiyuki Kitahara , Satoshi Matsubaguchi , Hiroaki Takano
IPC分类号： G11B5/70 , G11B5/702 , G11B5/738 , G11B5/68
CPC分类号： G11B5/70 , G11B5/7022 , G11B5/738 , Y10S428/90 , Y10T428/24355 , Y10T428/24942 , Y10T428/24975 , Y10T428/265 , Y10T428/31609
摘要： A magnetic recording medium prepared by a process which comprises providing a nonmagnetic layer comprising a nonmagnetic powder and a binder on a nonmagnetic support, and then providing one or more magnetic layers containing at least a ferromagnetic powder and a binder on the nonmagnetic layer while the nonmagnetic layer is wet, wherein the thickness of the magnetic layer is from 0.07 to 0.20 .mu.m, the magnetic layer comprises a resin curable by a polyisocyanate as a binder, the nonmagnetic layer is a layer cured by a polyisocyanate, and the ratio N/Fe in the magnetic layer is from 0.010 to 0.090 as determined by an X-ray photoelectric spectrophotometer; and a magnetic recording medium comprising a nonmagnetic support having thereon a lower nonmagnetic layer comprising a nonmagnetic powder and a binder, and further thereon a magnetic layer comprising at least a ferromagnetic metal powder and a binder, wherein the magnetic layer has a thickness of from 0.07 to 0.20 .mu.m, the magnetic layer has a maximum magnetic flux density Bm of from 3,700 to 6,000 G as measured in an external magnetic field of 10 kOe, the magnetic layer has a coercive force Hc of from 2,000 to 3,000 Oe, the magnetic layer has a center line surface roughness Ra of from 1.0 to 3.0 nm, and the nonmagnetic support has a center line surface roughness of from 0.5 to 7.0 nm on the side thereof to which the lower non layer is provided.
摘要翻译：一种磁记录介质，其制备方法包括在非磁性载体上提供包含非磁性粉末和粘合剂的非磁性层，然后在非磁性层上提供至少含有铁磁性粉末和粘结剂的一个或多个磁性层，而非磁性层是湿的，其中磁性层的厚度为0.07至0.20μm，磁性层包含可通过多异氰酸酯作为粘合剂固化的树脂，非磁性层是由多异氰酸酯固化的层，N / Fe 在磁性层中，由X射线光电分光光度计测定为0.010〜0.090; 以及包含非磁性载体的磁记录介质，其上具有包含非磁性粉末和粘合剂的下部非磁性层，并且还包括至少包含强磁性金属粉末和粘结剂的磁性层，其中所述磁性层的厚度为0.07 至0.20μm，磁性层的磁通密度Bm为10kOe的外部磁场中测定的3,700〜6,000G，磁性层的矫顽力Hc为2000〜3000Oe，磁性层具有1.0至3.0nm的中心线表面粗糙度Ra，并且非磁性载体在其设置较低非层的一侧具有0.5至7.0nm的中心线表面粗糙度。

10. 发明授权

US08202597B2 Multilayer optical recording medium, method and apparatus for manufacturing the multilayer optical recording medium 有权
标题翻译：多层光记录介质，多层光记录介质的制造方法和装置
公开(公告)号：US08202597B2
公开(公告)日：2012-06-19
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
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。

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