公开(公告)号：EP3940699A1

公开(公告)日：2022-01-19

申请号：EP20769567.7

申请日：2020-01-15

申请人： FUJIFILM Corporation

发明人： OZAWA, Eiki ,  KONDO, Michitaka ,  MIYAMOTO, Kentaro ,  SANO, Naoki

IPC分类号： G11B5/70 ,  G11B5/708 ,  G11B5/71 ,  G11B5/735 ,  G11B5/738 ,  G11B5/78 ,  G11B20/12

摘要： An information processing device includes a generation unit that generates a hierarchy of a group that classifies each piece of data from information about each of a plurality of pieces of data to be recorded, and a control unit that controls recording of the plurality of pieces of data included in a group of the hierarchy at a highest level on a magnetic recording medium in a recording order according to an order from an upper hierarchy to a lower hierarchy, for each group of the hierarchy at the highest level. The magnetic recording medium has a magnetic layer containing a ferromagnetic powder and a binding agent on a non-magnetic support. A difference between spacings S 0.5 and S 13.5 measured under pressures of 0.5 atm and 13.5 atm by an optical interference method after n-hexane cleaning on a surface of the magnetic layer is equal to or less than 3.0 nm.

公开(公告)号：EP1936610A1

公开(公告)日：2008-06-25

申请号：EP06810366.2

申请日：2006-09-21

申请人： TORAY INDUSTRIES, INC.

发明人： HORIE, Masato ,  SATO, Makoto ,  HIGASHIOJI, Takuji ,  NAKAMORI, Yukari ,  WATANABE, Hiroaki

IPC分类号： G11B5/73 ,  G11B5/78

CPC分类号： G11B5/7305

摘要： [Problem to be solved]
To provide a substrate excellent in dimensional stability and crack resistance and capable of being used to produce a high density magnetic recording medium little dimensionally changing under environmental changes and small in error rate.
[Solution]
A magnetic recording medium substrate comprising a polyester film having metallic oxide-containing layers (layers M) formed on both the surfaces, one layer on each surface, the layers M having a thickness of 50 to 200 nm each, characterized in that the magnetic recording medium substrate has a total light transmittance of 0 to 75% and a surface resistivity of 1 x 10 2 to 1 x 10 13 Ω on each surface.

摘要翻译： [要解决的问题]为了提供尺寸稳定性和抗裂性优异并且能够用于制造在环境变化下尺寸变化小且误差率小的高密度磁记录介质的基板。 [解决方案]一种磁记录介质基板，其包含聚酯膜，所述聚酯膜具有在两个表面上形成的含金属氧化物层（层M），每个表面上的一层，所述层M各自具有50至200nm的厚度，其特征在于， 磁记录介质基板的全光线透过率为0〜75％，表面电阻率为1×10 2〜1×10 13Ω。

公开(公告)号：EP1241672A3

公开(公告)日：2003-07-16

申请号：EP02002332.1

申请日：2002-01-31

申请人： EMTEC Magnetics GmbH

发明人： Scholtysik, Bernd, Dr.

IPC分类号： G11B23/40 ,  G11B5/78 ,  B65H75/28 ,  B65D85/672 ,  G09F3/00 ,  B65H75/18 ,  B65C9/46 ,  B65H19/29

CPC分类号： G09F3/0297 ,  G09F3/02 ,  G09F3/0292 ,  G11B23/027 ,  G11B23/40

摘要： Identifikationsetikett zur Kennzeichnung von auf Kernen gewickelten streifenoder bandförmigen Medien, insbesondere bandförmigen magnetischen Datenaufzeichnungsträgern zu sogenannten Rohwickeln, wobei das Etikett Angaben zur Produktbezeichnung, zum Produktionscode und zur Qualitätsangabe umfasst und wobei auch die Lage der von einem Sensor erfassten Fehler des streifen- oder bandförmigen Mediums vermerkt ist.

公开(公告)号：EP1152419A1

公开(公告)日：2001-11-07

申请号：EP00902983.6

申请日：2000-02-15

申请人： Fuji Photo Film Co., Ltd.

发明人： MURAO, Naoto ,  SATO, Makoto ,  YAMAGISHI, Mitsugu ,  MORITA, Kiyoo

IPC分类号： G11B23/087 ,  G11B5/78

CPC分类号： G11B23/08728 ,  G11B5/78 ,  G11B23/037

摘要： A tape reel (10) according to the present invention is so constructed that an upper flange (12) and a lower flange (13) are respectively provided at an upper and a lower ends of a cylindrical reel hub (11) around which a magnetic tape (20) is wound, and a maximum value of a distance from the upper flange (12) and the lower flange (13) to lateral ends of the magnetic tape (20) is set to be 0.5mm or more, and less than 1.0mm. The magnetic tape (20) according to the invention includes a nonmagnetic substrate (21), a magnetic layer (22) provided on one face of the nonmagnetic substrate and a back layer (23) provided on the other face of the nonmagnetic substrate, and in a state where the magnetic tape is wound around the tape reel (10), a distance (U1 + D1) from the upper flange (12) and the lower flange (13) to lateral ends of the back layer (23) is larger than a distance (U2 + D2) from the upper flange (12) and the lower flange (13) to lateral ends of the nonmagnetic substrate (21) or lateral ends of the magnetic layer (22). Further, a magnetic tape cassette according to the invention is provided with at least one of the above described tape reel (10) and the magnetic tape (20). Owing to the above described structure, it is possible to provide the tape reel, the magnetic tape and the magnetic tape cassette in which dropout and output variation are restrained and irregular winding can be prevented.

摘要翻译： 根据本发明的磁带卷轴（10）的结构使得在圆柱形卷轴毂（11）的上端和下端分别设置上凸缘（12）和下凸缘（13），磁盘 带（20）被卷绕，并且从上凸缘（12）和下凸缘（13）到磁带（20）的横向端的距离的最大值设定为0.5mm以上，小于 1.0毫米。 根据本发明的磁带（20）包括非磁性基板（21），设置在非磁性基板的一个表面上的磁性层（22）和设置在非磁性基板的另一个表面上的背层（23），以及 在磁带缠绕在磁带卷轴（10）的状态下，从上凸缘（12）和下凸缘（13）到背层（23）的横向端部的距离（U1 + D1）较大 与从上凸缘（12）和下凸缘（13）到非磁性基板（21）的侧端或磁性层（22）的侧端的距离（U2 + D2）。 此外，根据本发明的磁带盒设置有上述带盘（10）和磁带（20）中的至少一个。 由于上述结构，可以提供限制了压差和输出变化的带盘，磁带和磁带盒，并且可以防止不规则的卷绕。

公开(公告)号：EP0192765A4

公开(公告)日：1988-07-04

申请号：EP85904907

申请日：1985-09-13

申请人： DENNISON MFG CO

发明人： LIVERMORE ANTHONY M ,  FORD FRANCIS J

IPC分类号： B65H75/22 ,  G11B15/67 ,  G11B23/037 ,  G11B5/78

CPC分类号： B65H75/22 ,  B65H2701/514 ,  G11B15/67 ,  G11B23/037

公开(公告)号：EP3742445A1

公开(公告)日：2020-11-25

申请号：EP18908453.6

申请日：2018-11-19

申请人： Sony Corporation

发明人： HASHIMOTO Kazuya ,  IWAMA Takanobu ,  KOBAYASHI Hiroyuki ,  HIRATSUKA Ryoichi ,  KANEMAKI Yoichi ,  TERUI Hikaru

IPC分类号： G11B5/738 ,  G11B5/78

摘要： To provide a magnetic recording tape that exhibits excellent tape dimension stability even if there are changes in temperature or humidity or even if tension is applied to the magnetic recording tape during tape travelling.
The present technology provides a magnetic recording tape, the tape (T1 or T2) having a total thickness of 5.6 µm or less and including a magnetic layer 1, a non-magnetic layer 2, a base layer 3, and a back layer 4 in the stated order. In one embodiment, a deposition film layer A formed of a metal or an oxide thereof is provided on a lower-layer side of the non-magnetic layer 2. The deposition film layer A may be provided on the back layer 4 and an insulation layer B may also be provided between the deposition film layer A the non-magnetic layer 2.

公开(公告)号：EP2272669B1

公开(公告)日：2013-09-18

申请号：EP09733701.8

申请日：2009-04-21

申请人： Teijin Limited

发明人： KINOSHITA, Eiji ,  TOJO, Mitsuo ,  HANDA, Makoto ,  ISHIDA, Takeshi

IPC分类号： B32B27/36 ,  C08G63/06 ,  G11B5/73 ,  G11B5/78

CPC分类号： G11B5/7305 ,  B32B7/02 ,  B32B27/08 ,  B32B27/18 ,  B32B27/36 ,  B32B2264/02 ,  B32B2264/10 ,  B32B2307/30 ,  B32B2307/306 ,  B32B2307/50 ,  B32B2307/518 ,  B32B2307/538 ,  B32B2307/72 ,  B32B2307/734 ,  B32B2429/00 ,  C08G63/065 ,  Y10T428/24355 ,  Y10T428/31786

公开(公告)号：EP1936610B1

公开(公告)日：2011-07-27

申请号：EP06810366.2

申请日：2006-09-21

申请人： TORAY INDUSTRIES, INC.

发明人： HORIE, Masato ,  SATO, Makoto ,  HIGASHIOJI, Takuji ,  NAKAMORI, Yukari ,  WATANABE, Hiroaki

IPC分类号： G11B5/73 ,  G11B5/78

CPC分类号： G11B5/7305

摘要： [PROBLEMS] To provide a support that has excellent dimensional stability and crack resistance and, particularly in the form of a magnetic recording medium, undergoes no significant change in dimension caused by an environmental change and can provide a high-density magnetic recording medium having a low error rate. [MEANS FOR SOLVING PROBLEMS] A support for a magnetic recording medium, comprising a metal oxide-containing layer (M layer) provided on both sides of a polyester film, the thickness of each M layer being 50 to 200 nm, characterized in that the total light transmittance of the support for a magnetic recording medium is 0 to 75%, and the surface resistivity of each face is 1 × 102 to 1 × 1013 Ω.

公开(公告)号：EP2272669A1

公开(公告)日：2011-01-12

申请号：EP09733701.8

申请日：2009-04-21

申请人： Teijin Limited

发明人： KINOSHITA, Eiji ,  TOJO, Mitsuo ,  HANDA, Makoto ,  ISHIDA, Takeshi

IPC分类号： B32B27/36 ,  C08G63/06 ,  G11B5/73 ,  G11B5/78

CPC分类号： G11B5/7305 ,  B32B7/02 ,  B32B27/08 ,  B32B27/18 ,  B32B27/36 ,  B32B2264/02 ,  B32B2264/10 ,  B32B2307/30 ,  B32B2307/306 ,  B32B2307/50 ,  B32B2307/518 ,  B32B2307/538 ,  B32B2307/72 ,  B32B2307/734 ,  B32B2429/00 ,  C08G63/065 ,  Y10T428/24355 ,  Y10T428/31786

摘要： A biaxially oriented laminated polyester film which has dimensional stability against environmental changes such as temperature and humidity variations and rarely elongates when a load is applied thereto at a high temperature.
The biaxially oriented laminated film comprises a film layer (A) made of an aromatic polyester (A) and a film layer (B) made of an aromatic polyester (B), wherein
the content of a 6,6'-(alkylenedioxy)di-2-naphthoic acid component represented by the following formula (I) based on the total of all the acid components is less than 5 mol% in the aromatic polyester (A) and not less than 5 mol% and less than 80 mol% in the aromatic polyester (B); and
the peak temperature of tanδ on a high temperature side is 135°C or higher when viscoelasticity is measured in the machine direction.

(in the formula (I), R is an alkylene group having 1 to 10 carbon atoms.)

摘要翻译： 双轴取向叠层聚酯薄膜，其在温度和湿度变化等环境变化方面具有尺寸稳定性，并且当在高温下施加负荷时很少伸长。 双轴取向层压膜包括由芳族聚酯（A）制成的膜层（A）和由芳族聚酯（B）制成的膜层（B），其中6,6' - （亚烷基二氧基）二 基于所有酸成分的总量，下式（I）表示的-2-萘甲酸成分在芳族聚酯（A）中小于5摩尔％，在5摩尔％以上且小于80摩尔％以下 芳香族聚酯（B）; 并且当在机器方向上测量粘弹性时，高温侧的tan'的峰值温度为135℃以上。 （式（I）中，R为碳原子数1〜10的亚烷基）

公开(公告)号：EP1983512A4

公开(公告)日：2009-02-25

申请号：EP06843740

申请日：2006-12-27

申请人： TEIJIN DUPONT FILMS JAPAN LTD

发明人： KOBAYASHI IEYASU ,  MURO SHINJI ,  ISHIDA TAKESHI

IPC分类号： G11B5/73 ,  B29C55/12 ,  C08J5/18 ,  G11B5/733 ,  G11B5/78

CPC分类号： G11B5/7305 ,  B29C55/12 ,  B29C55/143 ,  B29K2067/00 ,  C08J5/18 ,  C08J2367/02 ,  G11B5/733

摘要： This invention provides a biaxially oriented polyester film, which has a Young's modulus (YMD) in a film formation direction of not less than 6.5 GPa and a Young's modulus (YTD) in a widthwise direction of 8.2 to 9.8 GPa and is suitable for use as a base film in a magnetic recording tape for a linear recording system, and a magnetic recording tape for a linear recording system, using the biaxially oriented polyester film as a base film. The biaxially oriented polyester film has excellent dimensional stability, particularly dimensional stability in the widthwise direction.