公开(公告)号：US4413295A

公开(公告)日：1983-11-01

申请号：US372556

申请日：1982-04-28

申请人： Hiroaki Kato ,  Junji Hamana ,  Akeo Sakai ,  Yoshio Kawakami ,  Atsushi Goto ,  Saichiro Amano

发明人： Hiroaki Kato ,  Junji Hamana ,  Akeo Sakai ,  Yoshio Kawakami ,  Atsushi Goto ,  Saichiro Amano

IPC分类号： G11B5/105 ,  G11B5/147 ,  G11B5/21 ,  G11B3/08 ,  G11B5/08

CPC分类号： G11B5/21 ,  G11B5/105 ,  G11B5/147

摘要： The present invention provides a magnetic head of which magnetic core is composed of thin plates of a high magnetic permeability, each provided with an adhesive layer comprising a granular substance. In such structure, the stress relaxation achieved by said granular substance prevents the loss of effective magnetic permeability of said core, thereby improving the high frequency characteristics. Also the presence of said granular substance realizes a hardness in the vicinity of said adhesive higher than that of said thin plates of a high magnetic permeability, thereby improving the abrasion resistance of said core. Furthermore said adhesive layer is rendered satisfactorily thinner than said thin plate to prevent the loss of sensitivity. Furthermore a fixing member for supporting said core is made of such a composition as to be evenly abraded with said core, thereby preventing deformation of the head resulting from abrasion by the recording medium and thus enabling to maintain the initial electromagnetic converting characteristics over a prolonged period.

摘要翻译： 本发明提供一种磁头，其磁芯由高磁导率的薄板构成，每个磁性体均设置有包含粒状物质的粘合剂层。 在这种结构中，由所述粒状物质实现的应力松弛防止了所述芯的有效磁导率的损失，从而提高了高频特性。 此外，所述粒状物质的存在使所述粘合剂附近的硬度比所述高磁导率薄板的硬度高，从而提高所述芯的耐磨性。 此外，所述粘合剂层比所述薄板令人满意地变薄，以防止灵敏度的损失。 此外，用于支撑所述芯的固定构件由这样的组合物制成，以便与所述芯均匀地磨损，从而防止由于记录介质的磨损导致的头部变形，从而能够在较长时间内保持初始电磁转换特性 。

公开(公告)号：US07833432B2

公开(公告)日：2010-11-16

申请号：US11548165

申请日：2006-10-10

申请人： Junji Hamana ,  Isamu Kawada ,  Naoaki Maruyama

发明人： Junji Hamana ,  Isamu Kawada ,  Naoaki Maruyama

IPC分类号： C04B35/04 ,  H01F1/26

CPC分类号： C08K3/08

摘要： A compression molding which is high in both dimensional accuracy and mechanical strength is difficult to manufacture by a powder molding process. Especially, a molding including a soft magnetic material with high soft magnetic properties is difficult to manufacture. A composite metal molding according to the present invention includes metal particles and the carbide of a resin intervening among the particles. It is manufactured by coating metal particles with a resin, molding the prepared molding material under pressure into a predetermined shape, and heating the prepared pressurized preform to calcine the resin and weld mutually the particles. The carbide of the resin has a weight ratio of 0.001 to 2% to the metal particles when the particles have their proportion expressed as 100. The particles have a weld ratio of 10 to 80%. The particles preferably contain a soft magnetic material and the resin is preferably a furan resin.

摘要翻译： 通过粉末成型工艺难以制造尺寸精度和机械强度高的压缩成形体。 特别地，难以制造包括具有高软磁特性的软磁性材料的成型体。 根据本发明的复合金属模制件包括金属颗粒和介于颗粒之间的树脂的碳化物。 其通过用树脂涂覆金属颗粒来制造，将制备的模塑材料在压力下成型为预定形状，并加热所制备的加压预成型件以煅烧树脂并相互焊接颗粒。 当颗粒的比例表示为100时，树脂的碳化物与金属颗粒的重量比为0.001〜2％。该颗粒的焊接比为10〜80％。 颗粒优选含有软磁性材料，树脂优选为呋喃树脂。

公开(公告)号：US20070149681A1

公开(公告)日：2007-06-28

申请号：US11548165

申请日：2006-10-10

申请人： Junji Hamana ,  Isamu Kawada ,  Naoaki Maruyama

发明人： Junji Hamana ,  Isamu Kawada ,  Naoaki Maruyama

IPC分类号： C08K3/08

CPC分类号： C08K3/08

摘要： A compression molding which is high in both dimensional accuracy and mechanical strength is difficult to manufacture by a powder molding process. Especially, a molding including a soft magnetic material with high soft magnetic properties is difficult to manufacture. A composite metal molding according to the present invention includes metal particles and the carbide of a resin intervening among the particles. It is manufactured by coating metal particles with a resin, molding the prepared molding material under pressure into a predetermined shape, and heating the prepared pressurized preform to calcine the resin and weld mutually the particles. The carbide of the resin has a weight ratio of 0.001 to 2% to the metal particles when the particles have their proportion expressed as 100. The particles have a weld ratio of 10 to 80%. The particles preferably contain a soft magnetic material and the resin is preferably a furan resin.

摘要翻译： 通过粉末成型工艺难以制造尺寸精度和机械强度高的压缩成形体。 特别地，难以制造包括具有高软磁特性的软磁性材料的成型体。 根据本发明的复合金属模制件包括金属颗粒和介于颗粒之间的树脂的碳化物。 其通过用树脂涂覆金属颗粒来制造，将制备的模塑材料在压力下成型为预定形状，并加热所制备的加压预成型件以煅烧树脂并相互焊接颗粒。 当颗粒的比例表示为100时，树脂的碳化物与金属颗粒的重量比为0.001〜2％。该颗粒的焊接比为10〜80％。 颗粒优选含有软磁性材料，树脂优选为呋喃树脂。

公开(公告)号：US4161005A

公开(公告)日：1979-07-10

申请号：US845637

申请日：1977-10-26

申请人： Hiroaki Kato ,  Junji Hamana

发明人： Hiroaki Kato ,  Junji Hamana

IPC分类号： G11B5/105 ,  G11B5/255

CPC分类号： G11B5/105 ,  G11B5/255

摘要： A magnetic head comprises a magnetic core having a sliding surface on which a magnetic tape moves sliding, a casing for enclosing said magnetic core, and a fixing material used to secure said magnetic core within said casing, said fixing material essentially consisting of a resin, a filler and MoS.sub.2 added as an additional filler.

摘要翻译： 磁头包括具有磁带移动滑动的滑动表面的磁芯，用于封闭所述磁芯的壳体和用于将所述磁芯固定在所述壳体内的固定材料，所述固定材料基本上由树脂组成， 填充剂和作为附加填料添加的MoS2。

公开(公告)号：US08075838B2

公开(公告)日：2011-12-13

申请号：US12837911

申请日：2010-07-16

申请人： Junji Hamana ,  Isamu Kawada ,  Naoaki Maruyama

发明人： Junji Hamana ,  Isamu Kawada ,  Naoaki Maruyama

IPC分类号： B22F3/12

CPC分类号： C08K3/08

摘要： A compression molding which is high in both dimensional accuracy and mechanical strength is difficult to manufacture by a powder molding process. Especially, a molding including a soft magnetic material with high soft magnetic properties is difficult to manufacture. A composite metal molding according to the present invention includes metal particles and the carbide of a resin intervening among the particles. It is manufactured by coating metal particles with a resin, molding the prepared molding material under pressure into a predetermined shape, and heating the prepared pressurized preform to calcine the resin and weld mutually the particles. The carbide of the resin has a weight ratio of 0.001 to 2% to the metal particles when the particles have their proportion expressed as 100. The particles have a weld ratio of 10 to 80%. The particles preferably contain a soft magnetic material and the resin is preferably a furan resin.

摘要翻译： 通过粉末成型工艺难以制造尺寸精度和机械强度高的压缩成形体。 特别地，难以制造包括具有高软磁特性的软磁性材料的成型体。 根据本发明的复合金属模制件包括金属颗粒和介于颗粒之间的树脂的碳化物。 其通过用树脂涂覆金属颗粒来制造，将制备的模塑材料在压力下成型为预定形状，并加热所制备的加压预成型件以煅烧树脂并相互焊接颗粒。 当颗粒的比例表示为100时，树脂的碳化物与金属颗粒的重量比为0.001〜2％。该颗粒的焊接比为10〜80％。 颗粒优选含有软磁性材料，树脂优选为呋喃树脂。

公开(公告)号：US20100276832A1

公开(公告)日：2010-11-04

申请号：US12837911

申请日：2010-07-16

申请人： Junji Hamana ,  Isamu Kawada ,  Naoaki Muruyama

发明人： Junji Hamana ,  Isamu Kawada ,  Naoaki Muruyama

IPC分类号： B29C43/02

CPC分类号： C08K3/08

摘要： A compression molding which is high in both dimensional accuracy and mechanical strength is difficult to manufacture by a powder molding process. Especially, a molding including a soft magnetic material with high soft magnetic properties is difficult to manufacture. A composite metal molding according to the present invention includes metal particles and the carbide of a resin intervening among the particles. It is manufactured by coating metal particles with a resin, molding the prepared molding material under pressure into a predetermined shape, and heating the prepared pressurized preform to calcine the resin and weld mutually the particles. The carbide of the resin has a weight ratio of 0.001 to 2% to the metal particles when the particles have their proportion expressed as 100. The particles have a weld ratio of 10 to 80%. The particles preferably contain a soft magnetic material and the resin is preferably a furan resin.

摘要翻译： 通过粉末成型工艺难以制造尺寸精度和机械强度高的压缩成形体。 特别地，难以制造包括具有高软磁特性的软磁性材料的成型体。 根据本发明的复合金属模制件包括金属颗粒和介于颗粒之间的树脂的碳化物。 其通过用树脂涂覆金属颗粒来制造，将制备的模塑材料在压力下成型为预定形状，并加热所制备的加压预成型件以煅烧树脂并相互焊接颗粒。 当颗粒的比例表示为100时，树脂的碳化物与金属颗粒的重量比为0.001〜2％。该颗粒的焊接比为10〜80％。 颗粒优选含有软磁性材料，树脂优选为呋喃树脂。

公开(公告)号：US5253135A

公开(公告)日：1993-10-12

申请号：US667314

申请日：1991-03-12

申请人： Junji Hamana

发明人： Junji Hamana

IPC分类号： G11B5/10 ,  G11B15/60 ,  G11B15/62 ,  G11B5/105

CPC分类号： G11B15/62 ,  G11B15/602 ,  G11B5/10

摘要： A magnetic head for recording information on or reproducing information from a magnetic tape which slides relative to a tape sliding surface of the head while being pressed against the tape sliding surface by a pad. The magnetic head has a pair of projections on its tape sliding surface. The projections are disposed so that the ends of the pad, protruding beyond the edges of the tape, make contact with the projections. The projections are made by depositing liquid resin on the tape sliding surface using a screen printing process. The surfaces of the projections have traces of a fine mesh of a screen plate employed in the screen printing process.

摘要翻译： 一种磁头，用于在磁带上记录信息或从磁带上再现信息，该磁带在通过焊盘压靠磁带滑动表面时相对于磁头滑动表面滑动。 磁头在其磁带滑动面上具有一对凸起。 突起被设置成使得突出超过带的边缘的垫的端部与突起接触。 通过使用丝网印刷工艺将液体树脂沉积在胶带滑动表面上来制造突起。 突起的表面在丝网印刷过程中使用的丝网的细网的痕迹。

公开(公告)号：US4368496A

公开(公告)日：1983-01-11

申请号：US230107

申请日：1981-01-29

申请人： Hiroaki Kato ,  Junji Hamana ,  Akeo Sakai ,  Yoshio Kawakami ,  Atsushi Goto ,  Saichiro Amano

发明人： Hiroaki Kato ,  Junji Hamana ,  Akeo Sakai ,  Yoshio Kawakami ,  Atsushi Goto ,  Saichiro Amano

IPC分类号： G11B5/105 ,  G11B5/147 ,  G11B5/21 ,  G11B3/08 ,  G11B5/08

CPC分类号： G11B5/147 ,  G11B5/105 ,  G11B5/21

摘要： The present invention provides a magnetic head of which magnetic core is composed of thin plates of a high magnetic permeability, each provided with an adhesive layer comprising a granular substance. In such structure, the stress relaxation achieved by said granular substance prevents the loss of effective magnetic permeability of said core, thereby improving the high frequency characteristics. Also the presence of said granular substance realizes a hardness in the vicinity of said adhesive higher than that of said thin plates of a high magnetic permeability, thereby improving the abrasion resistance of said core. Furthermore said adhesive layer is rendered satisfactorily thinner than said thin plate to prevent the loss of sensitivity. Furthermore a fixing member for supporting said core is made of such a composition as to be evenly abraded with said core, thereby preventing deformation of the head resulting from abrasion by the recording medium and thus enabling to maintain the initial electromagnetic converting characteristics over a prolonged period.

公开(公告)号：US4894737A

公开(公告)日：1990-01-16

申请号：US127947

申请日：1987-12-02

申请人： Junji Hamana ,  Shinichi Hara ,  Makoto Miyagi

发明人： Junji Hamana ,  Shinichi Hara ,  Makoto Miyagi

IPC分类号： G11B5/10 ,  G11B5/187 ,  G11B15/60 ,  G11B15/62 ,  G11B23/087

CPC分类号： G11B5/10 ,  G11B15/602 ,  G11B15/62 ,  G11B23/08771 ,  G11B5/1871

摘要： This invention proposes to form a pair of protruding or projecting stripe portions along the tape-gliding face of magnetic tape and to reduce the pad pressure to magnetic tape thereby reducing the gliding resistance of magnetic tape without increasing its spacing loss (first embodiment), to incline the plane of the projecting stripe portions in a decreasing direction in the vicinity of the tape-gliding face in order to stabilize the pad contact (second embodiment), to form grooves on the tape-gliding face of the magnetic core in the transversal edge portions at least in the tape entrance side thereby facilitating prevention of tape squeaking (third embodiment), to increase the height of one of the projecting stripe portions in the vicinity of head mounting position compared to that of the other stripe portion thereby preventing one-sided abrasion of the tape-gliding face (fourth embodiment), and to form tape guide members on the magnetic head for guiding the magnetic tape closer to one of the projecting stripe portion at the head mounting position and separate from the other thereby preventing one-sided abrasion of the tape-gliding face (fifth embodiment).

摘要翻译： 本发明提出沿着磁带的滑翔面形成一对突出或突出的条纹部分，并且将垫压力减小到磁带，从而降低磁带的滑动阻力而不增加其间隔损耗（第一实施例），至 为了稳定焊盘接触（第二实施例），在带滑动面附近沿着减小的方向倾斜突出条纹部分的平面，在横向边缘的磁芯的滑行面上形成槽 至少在磁带入口侧的部分，从而有利于防止磁带吱吱声（第三实施例），以增加磁头安装位置附近的一个突出条纹部分的高度与其他条纹部分的高度相比，从而防止单面 胶带滑行面的磨损（第四实施例），并且在磁头上形成带引导构件，用于将磁带引导到更靠近一个 的突出条纹部分在头部安装位置处并且彼此分离，从而防止带滑动面的单面磨损（第五实施例）。