公开(公告)号：US20040173069A1

公开(公告)日：2004-09-09

申请号：US10790313

申请日：2004-03-01

申请人： TDK Corporation

发明人： Sadayuki Shoudai ,  Tsutomu Kikuchi

IPC分类号： B26D001/00 ,  B23D019/04

CPC分类号： B26D1/0006 ,  B26D2001/0046 ,  B26D2001/0053 ,  B26D2001/0066 ,  Y10T83/04 ,  Y10T83/0605 ,  Y10T83/783

摘要： A method for manufacturing a magnetic tape includes the steps of feeding a broad magnetic tape including a broad support formed with a magnetic recording layer on one side thereof and a back coat layer on the other surface thereof to a portion between a disk-like upper blade and a disk-like lower blade overlapping each other and rotating in opposite directions and cutting the broad magnetic tape into magnetic tapes each having a predetermined width, which method for manufacturing a magnetic tape further includes a step of setting a cutting start angle between the disk-like upper blade and the disk-like lower blade overlapping each other and rotating in opposite directions at the time that cutting of the broad magnetic tape fed to a portion between the upper blade and the lower blade by the upper blade and the lower blade is started so that a lower blade side cut surface of the magnetic tape to be formed by cutting the broad magnetic tape includes 40% to 65% of a region formed by cutting the magnetic tape by a breaking force, thereby cutting the broad magnetic tape. According to the above method, it is possible to manufacture a magnetic tape which can minimize an irregular raised and depressed pattern of a cut surface of a magnetic tape.

摘要翻译： 一种制造磁带的方法包括以下步骤：在其一面上包括形成有磁记录层的宽支架的宽磁带和在其另一表面上的后涂层到盘状上刀片之间的部分 以及盘状的下部刀片，彼此重叠并沿相反方向旋转，并将宽磁带切割成各自具有预定宽度的磁带，该制造磁带的方法还包括在盘片之间设置切割起始角度的步骤 在通过上刀片和下刀片供给到上刀片和下刀片之间的部分的宽磁带​​的切割时，相同的盘状下刀片和盘状下刀片彼此重叠并相反地旋转 开始使得通过切割宽磁带形成的磁带的下刀片侧切割表面包括由切口锡形成的区域的40％至65％ 通过断裂力使磁带克隆，从而切割宽磁带。 根据上述方法，可以制造可以使磁带的切割表面的不规则的凸起和凹陷图案最小化的磁带。

公开(公告)号：US20040185292A1

公开(公告)日：2004-09-23

申请号：US10802134

申请日：2004-03-16

申请人： TDK Corporation

发明人： Sadayuki Shoudai ,  Tsutomu Kikuchi

IPC分类号： B32B015/00

CPC分类号： G11B5/84 ,  Y10T83/04 ,  Y10T428/12493

摘要： A method for manufacturing a magnetic tape includes a step of setting a cutting start angle between the disk-like upper blade and the disk-like lower blade overlapping each other and rotating in opposite directions at the time that cutting of the broad magnetic tape fed to a portion between the upper blade and the lower blade by the upper blade and the lower blade is started so that a position where an irregular raised and depressed pattern of a cut surface of the support on the side of the upper blade to be formed becomes locally maximal or a position where an irregular raised and depressed pattern of a cut surface of the support on the side of the lower blade becomes locally maximal satisfies 40null100BU/Tnull70 or 40null100BL/Tnull70, where BU is the distance from the surface of the back coat layer to the position where the irregular raised and depressed pattern of the cut surface of the support on the side of the upper blade becomes locally maximal, BL is the distance from the surface of the back coat layer to the position where the irregular raised and depressed pattern of the cut surface of the support on the side of the lower blade becomes locally maximal and T is the total thickness of the broad magnetic tape, and cutting the broad magnetic tape, thereby manufacturing the magnetic tape.

摘要翻译： 一种制造磁带的方法包括以下步骤：设置在盘状上刀片和盘状下刀片之间彼此重叠的切割起始角度，并且在切割供给到 启动上刀片和下刀片之间的上刀片和下刀片之间的部分，使得要形成的上刀片侧的支撑件的切割表面的不规则凸起和凹陷图案位置变得局部 支撑件侧面的切割面的不规则凸起和凹陷图案局部最大的最大值或位置满足40 <= 100BU / T <= 70或40 <= 100BL / T <= 70，其中 BU是从背涂层的表面到上刀片侧的支撑件的切割面的不规则凸起和凹陷图案局部最大的位置的距离，BL是距表面的距离 将背涂层设置到下刀片侧的支撑体的切割面的不规则凸起和凹凸图案局部最大的位置，T是宽磁带的总厚度，并切割宽磁带， 从而制造磁带。