公开(公告)号：US20050168875A1

公开(公告)日：2005-08-04

申请号：US10896098

申请日：2004-07-20

申请人： Shinji Okada ,  Kuniaki Hirayama ,  Yoshio Uemura ,  Hidekazu Takeda

发明人： Shinji Okada ,  Kuniaki Hirayama ,  Yoshio Uemura ,  Hidekazu Takeda

IPC分类号： G11B5/52 ,  G11B5/53

CPC分类号： G11B5/52 ,  G11B5/53

摘要： An object of the present invention is to provide a center drum rotating type of rotary magnetic head drum apparatus, which improves an accuracy of alignment of an upper fixed drum, and easily executes a fine adjustment. In correspondence to the object mentioned above, a hole fitted to a shaft is provided at a position coaxial with an outer periphery of an upper fixed drum in an end surface portion of an upper portion of the upper fixed drum, the shaft is inserted to the hole, a slope of the end surface portion of the upper portion of the upper fixed drum is adjusted while being fixed by a male screw and a locking screw, and a fine adjustment is executed for aligning the upper fixed drum. In particular, an outer periphery of the upper fixed drum in an input side of the tape is slightly moved backward from an outer periphery of the upper fixed drum in an output side of the tape, with respect to an outer periphery of the lower fixed drum.

摘要翻译： 本发明的目的是提供一种中心鼓旋转式旋转磁头鼓装置，其提高了上固定鼓的对准精度，并且容易执行微调。 对应于上述目的，安装在轴上的孔设置在与上固定鼓的上表面部分的上固定鼓的外周同轴的位置，轴被插入到 在通过外螺纹和锁定螺钉固定的同时调整上固定滚筒上部端面部分的斜面，并进行微调以对准上固定滚筒。 特别地，在带的输入侧的上固定鼓的外周在带的输出侧从上固定鼓的外周稍微向后移动，相对于下固定鼓的外周 。

公开(公告)号：US5978185A

公开(公告)日：1999-11-02

申请号：US773631

申请日：1996-12-23

申请人： Fukuyasu Abe ,  Kenmei Masuda ,  Shinya Fujimori ,  Hidekazu Takeda ,  Atsushi Inoue ,  Yoshiharu Yamashita ,  Kuniaki Hirayama ,  Yoshio Uemura ,  Masahiko Fujishiro ,  Toshihiko Imachi

发明人： Fukuyasu Abe ,  Kenmei Masuda ,  Shinya Fujimori ,  Hidekazu Takeda ,  Atsushi Inoue ,  Yoshiharu Yamashita ,  Kuniaki Hirayama ,  Yoshio Uemura ,  Masahiko Fujishiro ,  Toshihiko Imachi

IPC分类号： G11B5/187 ,  G11B5/53 ,  G11B15/61 ,  G11B15/64

CPC分类号： G11B15/61 ,  G11B15/64 ,  G11B5/531 ,  G11B5/534 ,  G11B5/1871

摘要： Disclosed in an arrangement to achieve satisfactory head contact by increasing contact face pressure at a head gap and to reduce the change in time of head contact performance in a double azimuth head. Heads in a portion in which a tape is slid are respectively constructed with each head having two different arcs with a radius of curvature R1 in a first area which includes a gap, and with a radius of curvature R2 in a second area which is adjacent to the first area. A transition portion P for transitioning an arc with the radius of curvature R1 and an arc with the radius of curvature R2 is located in the direction of its adjacent head based upon a contact point Q on R1 of a common tangent drawn from an arc forming a periphery of a rotating drum to a circle formed by R1. The relationship between the radiuses of curvature in two areas is set to R1>R2. As the area in which a tape is in contact can be reduced, contact face pressure by the tape on a gap can be increased, satisfactory head contact can be obtained and as a contact area with a tape is wide to some extent, a change in time of contact performance can be reduced.

摘要翻译： 公开了通过增加头部间隙处的接触面压力来实现令人满意的头部接触的装置，并且减少双方位头部中的头部接触性能的时间变化。 分别构成带子滑动部分的头部，每个头部在具有间隙的第一区域中具有曲率半径R1的两个不同的弧，并且在与第二区域相邻的第二区域中具有曲率半径R2 第一个区域。 用于使具有曲率半径R1的圆弧和具有曲率半径R2的弧的过渡部分P基于R1上的接触点Q位于其相邻头部的方向上，该接触点Q从形成 旋转鼓的周边由R1形成的圆。 两个区域的曲率半径之间的关系设置为R1> R2。 随着胶带接触的区域可以减小，可以增加带上间隙的接触面压力，可以获得令人满意的头部接触，并且由于与带的接触面积在一定程度上是宽的， 可以减少接触性能的时间。

公开(公告)号：US6108165A

公开(公告)日：2000-08-22

申请号：US199160

申请日：1998-11-25

申请人： Hideki Maruyama ,  Kenmei Masuda ,  Kuniaki Hirayama ,  Yoshio Uemura ,  Toshihiko Imachi ,  Kenkichi Inada ,  Toshio Tsuchiya

发明人： Hideki Maruyama ,  Kenmei Masuda ,  Kuniaki Hirayama ,  Yoshio Uemura ,  Toshihiko Imachi ,  Kenkichi Inada ,  Toshio Tsuchiya

IPC分类号： G11B5/53 ,  G11B15/61

CPC分类号： G11B15/61

摘要： An arrangement is designed to achieve satisfactory tape contact by setting a specific ratio for the width of a drum window and the head length of a double azimuth head. The head length L is defined as the distance from the front end of the preceding head to the back end of the succeeding head. When the drum window width W is defined as the distance of the drum window in the rotary direction, the preceding head and the succeeding head are arranged within the drum window to satisfy the relation 1.15 L.ltoreq.W.ltoreq.1.28 L. When the space S1 is defined as the distance from the front end of the preceding head to the front end of the drum window, and the space S2 is defined as the distance from the back end of the succeeding head to the back end of the drum window, the preceding head and the succeeding head are arranged within the drum window to satisfy the relation 0.075 L.ltoreq.S1.ltoreq.0.14 L and 0.075 L.ltoreq.S2.ltoreq.0.14 L. According to this arrangement, the magnetic tape intrudes preferably into the space between the double azimuth head and the drum window. The magnetic tape envelopes and contacts the head surface, so that the tendency for a spacing to occur between the head and the tape is suppressed. The reproducing output is increased and stabilized in this way.

摘要翻译： 设计一种布置，通过设置鼓窗宽度和双方位头的头部长度的特定比例来实现令人满意的胶带接触。 头部长度L被定义为从前一个头部的前端到随后头部的后端的距离。 当滚筒窗口宽度W被定义为滚筒窗口在旋转方向上的距离时，先前的头部和后面的头部被布置在滚筒窗口内以满足关系1.15L

公开(公告)号：US5661622A

公开(公告)日：1997-08-26

申请号：US681605

申请日：1996-07-29

申请人： Masanori Kochi ,  Akihiro Nakajima ,  Yoshio Uemura ,  Toshihiko Imachi ,  Kuniaki Hirayama ,  Eijiro Tazawa ,  Kiyokazu Watanabe

发明人： Masanori Kochi ,  Akihiro Nakajima ,  Yoshio Uemura ,  Toshihiko Imachi ,  Kuniaki Hirayama ,  Eijiro Tazawa ,  Kiyokazu Watanabe

IPC分类号： G11B15/61 ,  G11B5/00 ,  G11B15/62 ,  G11B33/08 ,  G11B15/60

CPC分类号： G11B15/61 ,  G11B15/62 ,  G11B33/08

摘要： A rotary magnetic recording and reproducing apparatus includes a stationary cylinder formed on a lower portion of an outer peripheral surface thereof with a guide lead for guiding a lower edge of a magnetic tape and defining a tape running face on an upper portion of the outer peripheral surface thereof, a first bulge portion formed on an upper edge portion of the tape running face of the stationary cylinder on a tape leaving side of the upper edge portion of the tape running face and a second bulge portion which is smaller in height than the first bulge portion and formed on the upper edge portion of the tape running face on the tape leaving side thereof and in the vicinity of the first bulge portion on a tape incoming side of the first bulge portion. The first bulge portion serves to relax shock or vibration of a magnetic tape leaving the magnetic head and the second bulge portion serves to improve "head-touch" of the magnetic tape.

摘要翻译： 一种旋转磁记录和再现装置，包括：一个形成在其外周表面的下部的固定圆筒，用于引导磁带的下边缘的引导线，并且在外周面的上部限定一条带走向面 第一凸起部，形成在所述静止圆筒的带走带面的上边缘部分上，所述第一凸起部位于所述带走带面的上边缘部分的带离开侧;以及第二凸起部分，其高度小于所述第一凸起部 并且形成在带离开侧的带行走面的上边缘部分上并且在第一凸起部分的带进入侧的第一凸起部分附近。 第一凸起部分用于放松离开磁头的磁带的冲击或振动，并且第二凸起部分用于改善磁带的“头部接触”。

公开(公告)号：US20070019334A1

公开(公告)日：2007-01-25

申请号：US11414174

申请日：2006-05-01

申请人： Akihisa Obata ,  Masami Takada ,  Yoshio Uemura ,  Yoshiharu Yamashita ,  Kemmei Masuda

发明人： Akihisa Obata ,  Masami Takada ,  Yoshio Uemura ,  Yoshiharu Yamashita ,  Kemmei Masuda

IPC分类号： G11B5/52

CPC分类号： G11B5/588 ,  G11B5/52 ,  G11B15/61

摘要： Magnetic recording and reproducing apparatuses are narrowed in track pitch as one method of increasing the respective recording capacities. It has become evident, however, that the shocks and/or vibration applied during operation has critical effects on recording/reproduction, and it has thus become essential to improve shock resistance and vibration resistance. In a rotating magnetic head drum device including a lower fixed drum, an upper fixed drum, and a magnetic head, the upper face of the upper fixed drum and a cassette holder face are secured using a vibration suppressor plate to improve shock resistance and vibration resistance.

摘要翻译： 磁记录和再现装置作为增加各个记录容量的一种方法以磁道间距变窄。 然而，显而易见的是，在操作中施加的冲击和/或振动对记录/再现具有关键影响，因此改善抗冲击性和抗振动性变得至关重要。 在包括下固定鼓，上固定鼓和磁头的旋转磁头鼓装置中，使用振动抑制板固定上固定鼓的上表面和盒保持器面，以提高抗冲击性和抗振动性 。