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1. 发明授权

US5585977A Recording/reproducing apparatus and method embodying a unique scanning magnetic transducer 失效
标题翻译：记录/再现装置和方法体现了独特的扫描磁传感器
公开(公告)号：US5585977A
公开(公告)日：1996-12-17
申请号：US511983
申请日：1995-08-07
申请人： Beverley R. Gooch
发明人： Beverley R. Gooch
IPC分类号： G11B5/008 , G11B5/187 , G11B5/53
CPC分类号： G11B5/53 , G11B5/00856 , G11B5/187
摘要： In a recorder/reproducer apparatus, a scanning magnetic transducer for the magnetic recording and reproducing of a data signal in a magnetic storage medium. The transducer includes one or more elongate main pole segments embedded in the periphery of a rotary drum and oriented at an angle relative to the drum's axis of rotation. An elongate stationary pole with an electromagnetic winding coupled to the data signal is spaced from the drum and oriented generally parallel to the axis of rotation. A magnetic tape is transported between the two poles in contact with the main pole segments on the drum and spaced from the stationary pole. Rotation of the drum during recording and/or playback causes the area of intersection, that is, the opposed common area or confronting face portions, of the stationary pole and each of the successive main pole segments to be moved or scanned along the face of the stationary pole. A concentrated magnetic field corresponding to the data signal is generated at the area of intersection and thus also is moved along the length of the stationary pole. As a result, a series of generally transverse tracks of magnetic states are recorded in, or reproduced from, the tape as it is moved between the main pole segments and the stationary pole. Plural stationary poles may be used to provide a multiple track magnetic transducer for recording and reproducing multiple tracks in the magnetic storage medium.
摘要翻译：在记录器/再生器装置中，用于磁记录和再现磁存储介质中的数据信号的扫描磁换能器。换能器包括一个或多个细长的主极段，其嵌入旋转鼓的周边并相对于滚筒的旋转轴线成一定角度。具有耦合到数据信号的电磁绕组的细长固定极与鼓隔开并且大致平行于旋转轴定向。磁带在与磁鼓上的主极段接触的两个极之间传输并与固定极间隔开。在记录和/或重放期间滚筒的旋转导致固定极和每个连续主极段的交叉区域，即相对的公共区域或面对部分的面积沿着固定极。在交叉点产生对应于数据信号的集中磁场，并且也沿着固定极的长度移动。结果是，磁条状的一系列大致横向的磁迹被记录在磁带上或从磁带重现，因为它在主极段和固定极之间移动。可以使用多个固定极来提供用于在磁存储介质中记录和再现多个轨道的多轨磁换能器。

2. 发明授权

US11887636B2 Magnetic tape having characterized magnetic layer surface, magnetic tape cartridge, and magnetic tape apparatus 有权
公开(公告)号：US11887636B2
公开(公告)日：2024-01-30
申请号：US18298730
申请日：2023-04-11
申请人： FUJIFILM Corporation
发明人： Norihito Kasada , Yuto Murata , Nagisa Yamasaki
IPC分类号： G11B5/70 , G11B5/008 , G11B5/48 , G11B5/735
CPC分类号： G11B5/70 , G11B5/00813 , G11B5/00826 , G11B5/4893 , G11B5/00856 , G11B5/7356 , G11B2220/90 , G11B2220/956
摘要： The magnetic tape includes: a non-magnetic support; and a magnetic layer containing a ferromagnetic powder, and a magnetic tape cartridge and a magnetic tape apparatus include the magnetic tape. In a binarized image of a secondary electron image obtained by imaging a surface of the magnetic layer with a scanning electron microscope at an acceleration voltage of 5 kV, the number of bright regions having an equivalent circle diameter of 60 nm or more and less than 120 nm is 8000 or more and 30000 or less. Standard deviation σ of the number of the bright regions in a width direction of the surface of the magnetic layer is 2000 or less.

3. 发明公开

US20240105227A1 MAGNETIC TAPE HAVING CHARACTERIZED MAGNETIC LAYER SURFACE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE APPARATUS 审中-公开
公开(公告)号：US20240105227A1
公开(公告)日：2024-03-28
申请号：US18524221
申请日：2023-11-30
申请人： FUJIFILM Corporation
发明人： Norihito KASADA , Yuto MURATA , Nagisa YAMASAKI
IPC分类号： G11B5/70 , G11B5/008 , G11B5/48
CPC分类号： G11B5/70 , G11B5/00813 , G11B5/00826 , G11B5/4893 , G11B5/00856 , G11B5/7356
摘要： The magnetic tape includes: a non-magnetic support; and a magnetic layer containing a ferromagnetic powder, and a magnetic tape cartridge and a magnetic tape apparatus include the magnetic tape. In a binarized image of a secondary electron image obtained by imaging a surface of the magnetic layer with a scanning electron microscope at an acceleration voltage of 5 kV, the number of bright regions having an equivalent circle diameter of 60 nm or more and less than 120 nm is 8000 or more and 30000 or less. Standard deviation σ of the number of the bright regions in a width direction of the surface of the magnetic layer is 2000 or less.

4. 发明公开

US20230335159A1 MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE APPARATUS 审中-公开
公开(公告)号：US20230335159A1
公开(公告)日：2023-10-19
申请号：US18298730
申请日：2023-04-11
申请人： FUJIFILM Corporation
发明人： Norihito KASADA , Yuto MURATA , Nagisa YAMASAKI
IPC分类号： G11B5/735 , G11B5/008
CPC分类号： G11B5/7356 , G11B5/00856
摘要： The magnetic tape includes: a non-magnetic support; and a magnetic layer containing a ferromagnetic powder, and a magnetic tape cartridge and a magnetic tape apparatus include the magnetic tape. In a binarized image of a secondary electron image obtained by imaging a surface of the magnetic layer with a scanning electron microscope at an acceleration voltage of 5 kV, the number of bright regions having an equivalent circle diameter of 60 nm or more and less than 120 nm is 8000 or more and 30000 or less. Standard deviation σ of the number of the bright regions in a width direction of the surface of the magnetic layer is 2000 or less.

5. 发明授权

US4750060A Recording apparatus 失效
标题翻译：记录装置
公开(公告)号：US4750060A
公开(公告)日：1988-06-07
申请号：US841011
申请日：1986-03-14
申请人： Toshihiko Nakazawa , Hiroyuki Takimoto , Kazumitsu Tobe
发明人： Toshihiko Nakazawa , Hiroyuki Takimoto , Kazumitsu Tobe
IPC分类号： G11B5/008 , G11B5/024 , G11B15/12 , G11B27/029 , G11B5/03
CPC分类号： G11B5/00856 , G11B15/12 , G11B27/029 , G11B5/0086 , G11B5/024
摘要： A recording apparatus has a plurality of erasing heads arrayed aslant to the direction in which a strip-like recording medium is to be transported. An erasing operation on recorded information on the recording medium obliquely begins and obliquely ends by switching the erasing heads on and off one after another along an oblique recording track on the recording medium to accomplish information editing without introducing noises.
摘要翻译：记录装置具有多个沿条带状记录介质传输方向倾斜排列的擦除头。通过沿着记录介质上的倾斜记录轨道一个接一个地切换擦除头，倾斜地开始记录介质上的记录信息的擦除操作，并且倾斜地结束，以完成信息编辑而不引入噪声。

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