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1. 发明专利

DE3473680D1 未知
公开(公告)号：DE3473680D1
公开(公告)日：1988-09-29
申请号：DE3473680
申请日：1984-03-21
申请人： HITACHI METALS LTD , HITACHI LTD
发明人： SAKAKIHARA MASAHIKO , HASEGAWA KENZI , IWAMA AKIRA
IPC分类号： H01F10/26 , G11B5/73 , H01F10/28 , G11B5/64
摘要： A non-magnetic substrate material represented by the general formula, NixMn2-xO2, where 0.05

2. 发明专利

JPS63279412A MULTIELEMENT FILM MAGNETIC HEAD 失效
公开(公告)号：JPS63279412A
公开(公告)日：1988-11-16
申请号：JP11234887
申请日：1987-05-11
申请人： HITACHI LTD
发明人： MIURA YOSHITSUGU , KATAHASHI HISASHI , SASAJIMA TAKAMI , AOKI SHIGEO , IWAMA AKIRA
IPC分类号： G11B5/31
摘要： PURPOSE:To reduce a cross talk between channels by enlarging a space between upper and lower magnetic cores in the opposite parts of the magnetic core of a film in line head more than other part. CONSTITUTION:The in line dual gap magnetic head is provided with the upper part magnetic core 1, the lower part magnetic core 2, a driving coil 3, an upper and lower part magnetic core connecting part 4 the magnetic core opposite part 5 and an outlet electrode 10. Then, the space (b) between the upper and the lower magnet magnetic cores at the center part of the magnetic core is made larger than the angle (a) between the upper and the lower magnetic cores at the magnetic core opposite part 5. Accordingly, an upper and lower magnetic core space ratio a/b is reduced. Thereby, the film in line dual gap magnetic head having the smaller cross talk between the channels than the conventional one is obtained.

3. 发明专利

JPS62124222A REVOLUTION HEAT TREATING APPARATUS IN MAGNETIC FIELD 失效
公开(公告)号：JPS62124222A
公开(公告)日：1987-06-05
申请号：JP26103185
申请日：1985-11-22
申请人： HITACHI LTD
发明人： KAJIYAMA MORIO , ISHIHARA KIYOSHI , IWAMA AKIRA
IPC分类号： G11B5/127 , C21D9/00
摘要： PURPOSE:To provide heat treating apparatus in a magnetic field capable of impressing high magnetic field and having good workability, by arranging an electric furnace enveloping a sample in gap of an electromagnet, and arranging a mechanism for transmitting revolution of the sample at lower side thereof. CONSTITUTION:Electric current is conducted to an electromagnet coil to impress magnetic field of the extent in which the sample 6 is magnetically saturated. Next, the sample 6 is heated to a prescribed temp. by the electric furnace 3. During this time, the sample 6 is revolved at a fixed angular velocity by a motor 7 connected to a revolving shaft 5. By the treatment in such a way, magnetic anisotropy of the sample 6 is decreased and a high permeability can be obted. Since the apparatus is the structure in which sample holder is mounted on receiving base connected to the shaft 5, the sample 6 can be exchanged from upper side by dismantling a cover 8 and workability is good.

4. 发明专利

JPS6087456A MAGNETIC TAPE GUIDE DEVICE 失效
公开(公告)号：JPS6087456A
公开(公告)日：1985-05-17
申请号：JP19431583
申请日：1983-10-19
申请人： HITACHI LTD
发明人： KAWACHI MASANORI , IWAMA AKIRA
IPC分类号： G11B15/61
摘要： PURPOSE:To prevent a magnetic tape from floating over the tape guide surface by forming a coating layer having excellent wear resistance only to the tape rubbing surface. CONSTITUTION:A coating layer 9 having high wear resistance and low frictional force is formed only to a tape rubbing surface 10 not to a tape guide surface 2. Thus it is possible to keep an error delta3 of a working accuracy curve 7 on the surface 2 at the accuracy of the machining to an ideal straight line 6. The layer 9 is not formed either at a part delta4 of the surface 10. This is to facilitate easy masking when the layer 9 is formed. A level difference delta5 is produced between the layer 9 and the surface 10, can be neglected because it is very small.

5. 发明专利

JPS59198521A Rotary magnetic drum of rotary magnetic recording and reproducing device 失效
标题翻译：旋转磁记录和再现装置的旋转磁鼓
公开(公告)号：JPS59198521A
公开(公告)日：1984-11-10
申请号：JP7290183
申请日：1983-04-27
申请人： Hitachi Ltd
发明人： KAWACHI MASANORI , OZAKI SHINJI , IWAMA AKIRA , AOKI MICHIO , YAMAMOTO TATSUYA
IPC分类号： G11B5/52 , G11B15/61
CPC分类号： G11B15/61
摘要： PURPOSE:To attain less deformation at processing and to provide a high roundness by forming axially a cylinder part for chuck whose outer circumference is gripped at processing close to a mating part of a disc inner circumference part to a disc. CONSTITUTION:The cylinder part 12 for chuck whose outer circumference is gripped at processing close to the mating part of the inner circumference part to the disc 5 is formed axially to a rotary drum 7. The inner diameter of the cylinder part 12 for chuck is formed larger than the inner diameter of the mating part 13 to the disc 5. Points K, L of the outer circumference of the cylinder part 12 for chuck are chucked and gripped toward the arrow Q by a grip part C of a split chuck part 14 at processing and a byte is moved toward the arrows F, H, G so as to work out the outer circumference, the mating part 13 and an end face. The deformation of the outer circumference of the rotary drum 7 is decreased remarkably by gripping the cylinder part 12 for chuck by means of the chuck part 12 in this way and the outer circumference is formed as a roundness curve 12 close to a true circle 10.
摘要翻译：目的：为了在加工时获得较小的变形，并且通过沿轴向形成用于卡盘的圆筒部分，通过在靠近盘内圆周部分的配合部分的盘加工处理外围处理外周而提供高圆度。构成：在与圆盘5的内周部的配合部接近的加工处理外周被卡紧的卡盘的圆筒部12与旋转滚筒7轴向形成。卡盘用圆筒部12的内径形成大于配合部13与盘5的内径。用于卡盘的圆筒部12的外周的点K，L通过分割卡盘部14的夹持部C被夹持并朝向箭头Q夹持处理，并且字节向箭头F，H，G移动，以便外圆周，配合部13和端面。以这种方式通过卡盘部分12夹紧用于卡盘的圆筒部分12，旋转滚筒7的外圆周的变形显着减小，并且外圆周形成为靠近真圆10的圆度曲线12。

6. 发明专利

JPS59172703A Substrate material 失效
标题翻译：基材
公开(公告)号：JPS59172703A
公开(公告)日：1984-09-29
申请号：JP4759783
申请日：1983-03-22
申请人： Hitachi Ltd , Hitachi Metals Ltd
发明人： SAKAKIBARA MASAHIKO , HASEGAWA KENJI , IWAMA AKIRA
IPC分类号： H01F10/26 , G11B5/73 , H01F10/28
CPC分类号： G11B5/7315 , H01F10/28 , Y10S428/90 , Y10T428/1157
摘要： PURPOSE:To provide non-magnetic material for a substrate on which an Fe-Ni system or Fe-Al-Si system magnetic metal film is formed by physical deposition method. CONSTITUTION:Oxide material, which is expressed by NixMn2-x (where 0.05 / deg.C which is nearly the same as alpha of an Fe-Ni system or Fe-Al-Si system magnetic metal film. When above composition, as a main component, is doped by dopants such as Al, Cr, Si, Sn and Ba, higher flux density can be obtained so that this invention can be applied with the same effect to the composition whose alpha is approximately the same as that of the Fe-Ni system or Fe-Al-Si system magnetic metal film.
摘要翻译：目的：为通过物理沉积法形成Fe-Ni系或Fe-Al-Si系磁性金属膜的基板提供非磁性材料。构成：以NixMn2-x（其中0.05 <= x <1.0）表示并且具有主要的盐析组成的氧化物材料被引入作为用于磁性金属膜沉积的非磁性基底材料。利用该材料，可以制造其磁性金属薄膜在其形成之后不通过热处理而剥离并具有优异的磁特性的电子元件。选择0.05 <= x <1.0的原因是在（x）的该范围内，热膨胀系数α约为130-150X10-7 /℃，其与Fe-Ni的α几乎相同系统或Fe-Al-Si系统磁性金属膜。当以上组成作为主要成分时，由Al，Cr，Si，Sn和Ba等掺杂剂掺杂，可以获得更高的通量密度，从而本发明可以与其α大约为与Fe-Ni系或Fe-Al-Si系磁性金属膜相同。

7. 发明专利

JPS59114404A Measurement of shape and mounting attitude of magnetic head 失效
标题翻译：磁头的形状和安装方式的测量
公开(公告)号：JPS59114404A
公开(公告)日：1984-07-02
申请号：JP22378282
申请日：1982-12-22
申请人： Hitachi Ltd
发明人： KINOSHITA KAZUTO , AKATSU TOSHIO , TERAJIMA SEIICHIROU , IWAMA AKIRA
IPC分类号： G01B9/02 , G01B11/00 , G01B11/24
CPC分类号： G01B11/2441
摘要： PURPOSE:To calculate the attitude of mounting a magnetic head on a rotary cylinder by measuring the surface shape of a magnetic head left mounted on a rotary cylinder depending on the interference of light. CONSTITUTION:A laser light from a laser oscillator 3 is expanded with a beam expander 5 and divided in two directions with a half mirror 5. One of the beams is reflected with a mirror 6 and enters a TV camera 8 through a half mirror 5 again. The other thereof focuses with a convex lens 7, reflected on the surface of a rotary cylinder 2 moving with a fine adjusting base 9 or the surface the magnetic head 1 and enters the TV camera 8 through the convex lens 7 and the half mirror 5. Two lights forms an interference fringe on the TV camera 8 thereby enabling the measurement of distance.
摘要翻译：目的：通过根据光的干扰测量安装在旋转圆筒上的磁头的表面形状，计算将磁头安装在旋转圆筒上的姿势。构成：来自激光振荡器3的激光用扩束器5扩展，并且用半反射镜5在两个方向上分开。其中一个光束被反射镜6反射并再次通过半透半反镜5进入电视摄像机8 。另一方面是凸出的透镜7，反射在旋转圆筒2的表面上，该旋转圆筒2以微调底座9或磁头1的表面移动，并通过凸透镜7和半透半反镜5进入电视摄像机8。两个灯在电视摄像机8上形成干涉条纹，从而能够测量距离。

8. 发明专利

JPH02257415A ROTARY CYLINDER DEVICE, METHOD FOR ADJUSTING POSITION OF HEAD BASE, AND MANUFACTURE OF THE HEAD BASE 失效
公开(公告)号：JPH02257415A
公开(公告)日：1990-10-18
申请号：JP7666189
申请日：1989-03-30
申请人： HITACHI LTD
发明人： KONISHI KATSUO , ABE MITSUO , ARAI NOBUO , IWAMA AKIRA
IPC分类号： G11B5/53
摘要： PURPOSE:To simplify assembling work by fitting a magnetic head to a ring- shaped head base whose diameter is smaller than that of a cylinder, so that the tip part of the head base can be protruded from the outer circumferential surface of the cylinder by prescribed quantity. CONSTITUTION:A head fitting part 2a is provided in the outer diameter side of a ring-shaped head base 2, whose outer diameter is slightly smaller than that of a rotary cylinder 4, and a magnetic head 1 is adhered and fixed. In such a state, grinding work or performance measurement is executed for attaching the magnetic head 1 to a tape sliding surface R. Afterwards, a head base 2 is temporarily held to the rotary cylinder 4 and afterwards, assembly is executed by integrating a fixed cylinder 5 and rotary transformer 7, etc. A jig is inserted from the upper part of the rotary cylinder 4 and the position of the head base 2 is adjusted to the main body of the cylinder. Finally, the head base 2 is regularity fixed to the rotary cylinder 4 by a fitting screw 3. Thus, the assembling work is simplified.

9. 发明专利

JPH02167874A SURFACE TREATMENT OF CERAMIC AND REINFORCED CERAMIC FORMED THEREBY 失效
公开(公告)号：JPH02167874A
公开(公告)日：1990-06-28
申请号：JP32063688
申请日：1988-12-21
申请人： HITACHI LTD
发明人： MIURA TOSHIYUKI , OTA HIROYUKI , SASAJIMA SHIYUUZOU , IWAMA AKIRA
IPC分类号： C04B41/80 , C04B41/52 , C04B41/88
摘要： PURPOSE:To prevent ceramic fracture due to repeated loading of contact load by forming a Ni and/or Cr-contg. metallic thin film on the surface of a ceramic followed by ion implantation onto said surface to enhance the hardness of said thin film. CONSTITUTION:A Ni and/or Cr-contg. metallic thin film >=1mum in thickness is formed on the surface of a ceramic through a physical vapor deposition such as vacuum deposition or sputtering or chemical vapor deposition. Thence, at least one of ionic species selected from Sn. Ag, Mo, S, Cr and Si is implanted onto the surface of said thin film to enhance both the hardness and wear resistance of the extreme surface part of said thin film.

10. 发明专利

JPH01264223A RESIST COATER 失效
公开(公告)号：JPH01264223A
公开(公告)日：1989-10-20
申请号：JP9141688
申请日：1988-04-15
申请人： HITACHI LTD
发明人： FUKAYA RITSUO , MIURA TOSHIYUKI , AOKI SHIGEO , SASAJIMA TAKAMI , IWAMA AKIRA
IPC分类号： B05C11/08 , G03F7/16 , H01L21/027 , H01L21/30
摘要： PURPOSE:To coat a resist at a uniform thickness by a method wherein, after a jig used to fix a square semiconductor substrate has been vacuum-sucked and the resist has been coated, a baking operation is executed while the substrate has been fixed to the jig. CONSTITUTION:A substrate fixation jig for resist coating use which fixes a square semiconductor substrate 4 is constituted of a circular wing part 1 and a recessed part 3 used to fix the square semiconductor substrate 4. A rotatable stage 6 is housed inside outer-surrounding covers 7, 8 of a resist coater. A hole 10 used to vacuum-suck the substrate fixation jig 5 for resist coating use is made inside the stage 6. A recessed part 11 used to fix the square semiconductor substrate 4 is formed in the jig 5. A coated resist does not creep to the rear of the square semiconductor substrate; a temperature difference is not caused in the substrate 4; the resist can be coated without irregularity; the jig 5 can be detached from the stage 6; accordingly, a baking operation can be executed while the substrate 4 has been fixed to the jig 5. It is possible to prevent the coated resist from being damaged by tweezers or the like or a resist thickness from becoming non-uniform at an edge of the substrate 4.

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