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61. 发明专利

JPS60247819A PLASTIC MAGNETIC SUBSTRATE 失效
公开(公告)号：JPS60247819A
公开(公告)日：1985-12-07
申请号：JP10269084
申请日：1984-05-23
申请人： FUJITSU LTD
发明人： NARUMI TOSHIKATSU , SUENAGA TADATOSHI , FUKUSHIMA SHIGERU , TAKAHASHI JIYUN
IPC分类号： G11B5/66 , C08L79/08 , G11B5/73
摘要： PURPOSE:To reduce the weight of a magnetic substrate and to decrease the deformation by constituting a plastic magnetic substrate having a metallic film between a plastic substrate and magnetic film. CONSTITUTION:A disk 1 consisting of a poly-p-phenylene terephthal ether amide resin and having 2mm. thickness and 13cm diameter is used as the plastic substrate. The metallic film 2 superposed successively with 20mum copper, 10mum nickel and 2mum chromium is provided on the surface thereof and the magnetic film 3 having the solid component prepd. by mixing 65wt% ferrite powder with 35wt% resin consisting essentially of methyl methacrylate and having 0.5mum thickness is formed thereon. The metallic film can be provided on the plastic substrate of such magnetic substrate by subjecting said substrate to electroless plating of copper by the conventional method and electrodepositing nickel and chromium thereon. The magnetic film is formed by spin coating of a magnetic paint. The deterioration of the plastic substrate can be prevented by the shielding effect of the metallic film in the stage of curing the resin by IR irradiation after heating the coating to 100 deg.C to drive out the solvent.

62. 发明专利

JPS60246022A PRODUCTION OF MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPS60246022A
公开(公告)日：1985-12-05
申请号：JP10179084
申请日：1984-05-22
申请人： FUJITSU LTD
发明人： TAKAHASHI JIYUN , FUKUSHIMA SHIGERU , SUENAGA TADATOSHI , NARUMI TOSHIKATSU
IPC分类号： G11B5/71 , C09D5/23 , C09D7/12 , C10M105/54 , C10M107/38 , C10N40/18 , G11B5/842
摘要： PURPOSE:To obtain a magnetic disk having excellent durability, etc. by coating a magnetic paint contg. a solvent-soluble fluororesin and a hardener for said resin on a substrate and drying the coating then coating and impregnating a fluorinated carbon lubricating agent having a COOH group therein and subjecting the coating to a heat treatment to bond chemically the lubricating agent to the magnetic layer. CONSTITUTION:The paint prepd. by dispersing ferromagnetic powder into a solvent such as toluene or xylene contg. the solvent soluble type fluororesin (Asahi Glass Company, ''Lumifron(R)'', etc.) added with a hardener which can cross link said fluororesin, for example, melamine resin, isocyanate, etc. and, if necessary, an abrasive agent and Al2O3 power, etc. for the purpose of improving the strength is coated on an Al (alloy) substrate, etc. and is dried to form the magnetic layer. The fluorinated carbon lubricating agent having COOH, for example, the grease which is the product of Du Pont, is expressed by the formula and is diluted with a solvent is coated on said magnetic layer and is baked for about 30min at 100-170 deg.C. After such surface is flattened by polishing, the coating is after-cured for about 30min at 200 deg.C to bond chemically the lubricating agent in the magnetic coated film. The magnetic disk or the like which obviates adsorption of a magnetic head to the coated magnetic film, has excellent durability and decreases noise is thus obtd.

63. 发明专利

JPS60107734A PRODUCTION OF MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPS60107734A
公开(公告)日：1985-06-13
申请号：JP21448983
申请日：1983-11-15
申请人： FUJITSU LTD
发明人： FUKUSHIMA SHIGERU , MAEDA MIYOZOU , TAKAHASHI JIYUN , SUENAGA TADATOSHI , NARUMI TOSHIKATSU
IPC分类号： G11B5/842 , G11B5/84
摘要： PURPOSE:To realize excellent surface smoothness by performing thermal curing of a magnetic paint coated on a film while pressing the film with two sheets of glass in the stage of coating said paint on the film and curing thermally said paint thereby preventing the deformation of the base film and transferring the smoothness of the glass to the magnetic recording medium. CONSTITUTION:A magnetic recording medium formed by coating a magnetic paint consisting essentially of magnetic powder, thinner and thermosetting resin (epoxy, phenol, etc.) on a polyimide base film, then drying the paint for 30min at 60 deg.C is sandwiched between two sheets of ''Pyrex'' glass 2 by means of clips 3 having 5mm. thickness and is thermally cured for 30min in a hot air furnace at 250 deg.C. The deflection rate at the end of such magnetic recording medium when the 8'' magnetic recording medium is supported by 50mm.phi annular base 4 is

64. 发明专利

JPS6055570A MAGNETIC HEAD 失效
公开(公告)号：JPS6055570A
公开(公告)日：1985-03-30
申请号：JP16348983
申请日：1983-09-06
申请人： FUJITSU LTD
发明人： TAKAHASHI JIYUN , MAEDA MIYOZOU , FUKUSHIMA SHIGERU , SUENAGA TADATOSHI , NARUMI TOSHIKATSU
IPC分类号： G11B21/21 , G11B5/54 , G11B5/60 , G11B21/12
摘要： PURPOSE:To prevent head crash and to improve durability of a disc by forming a gimbal pressing part of a magnetic head of a shape memory alloy, heating said gimbal pressing part when the disc stops rotating and stopping the heating of the gimbal pressing part when the disc rotates. CONSTITUTION:A gimbal pressing part 12 is formed of a reversible shape memory alloy such as Ni-Ti, Cu-Al-Zn, Cu-Zn-Ga, Ni-Al or Cu-Zn. When a switch for rotaion of a disc is turned off, current flows to a nichrome wire 13 to heat the gimbal pressing part. The gimbal pressing part when heated bends in the direction where a head 11 parts from the disc, thereby maintaining the head in the state of detaching the same from the disc. The wire 13 is cooled after the rotation of the disc 14 is stopped and the part 12 restores the temp. prior to heating thus restoring the memorized state, i.e., the state of bringing the head 11 into contact with the disc. The disc 14 is already in the stop state in this stage and therefore the head 11 contacts with the disc 14 without rubbing the disc.

65. 发明专利

JPS59104728A Production of magnetic disc 失效
标题翻译：生产磁性盘
公开(公告)号：JPS59104728A
公开(公告)日：1984-06-16
申请号：JP21276082
申请日：1982-12-06
申请人： Fujitsu Ltd
发明人： MAEDA MIYOZOU , ITOU KENICHI , SUENAGA TADATOSHI , FUKUSHIMA SHIGERU , NARUMI TOSHIKATSU
IPC分类号： G11B5/82 , C09D5/23 , C09D133/00 , C09D133/04 , C09D161/00 , C09D161/04 , C09D161/20 , C09D161/28 , C09D163/00 , G11B5/73 , G11B5/84
CPC分类号： G11B5/84
摘要： PURPOSE:To simplify the surface finishing stage for a magnetic coating film of a magnetic disc by polishing the surface of the magnetic coating film with paper, fabric, cotton, leather or the like impregnated with alcohol, ether or water. CONSTITUTION:The surface of a magnetic coating film is polished with paper, fabric, cotton, leather or the like impregnated with alcohol, ether or water, whereby surface finishing is accomplished. The surface of the magnetic coating film is subjected to a varnishing treatment after the polishing. Lower alcohol, such as, for example, methanol, ethanol or isopropanol is usable as the alcohol and, for example, ethyl ether, methyl ether, methyl ethyl ether, etc. are usable as the ether. The liquid of such alcohol or the like is preferably supplied directly to the fabric, etc., and it is equally well that the liquid is supplied on the surface of the rotating magnetic coating film and is fed to the surface to be brought into contact with the fabric, etc.
摘要翻译：目的：通过用含有醇，乙醚或水的纸，织物，棉花，皮革等抛光磁性涂膜的表面，简化磁盘的磁性涂膜的表面处理阶段。构成：用乙醇，乙醚或水浸渍的纸，织物，棉花，皮革等对磁性涂膜的表面进行抛光，从而进行表面处理。在研磨后对磁性涂膜的表面进行上光处理。可以使用低级醇，例如甲醇，乙醇或异丙醇作为醇，例如可以使用乙醚，甲醚，甲乙醚等作为醚。这种醇等的液体优选直接供给到织物等中，并且同样良好地将液体供给到旋转磁性涂膜的表面上，并被供给到与表面接触的表面面料等

66. 发明专利

JPS5987626A PRODUCTION OF MAGNETIC DISK 失效
公开(公告)号：JPS5987626A
公开(公告)日：1984-05-21
申请号：JP19608782
申请日：1982-11-10
申请人： FUJITSU LTD
发明人： ITOU KENICHI , SUENAGA TADATOSHI , MAEDA MIYOZOU , NARUMI TOSHIKATSU , FUKUSHIMA SHIGERU
IPC分类号： G11B5/82 , C09D5/23 , C09D133/04 , C09D133/08 , C09D161/00 , C09D161/04 , C09D163/00 , G11B5/73 , G11B5/84
摘要： PURPOSE:To simplify the surface finishing process of a magnetic film and at the same time to improve a production yield by applying only a burnishing process to have a contact with the coating surface of a magnetic coating material revolving a head containing an abrasive grain layer on its slide contact surface, at the surface finishing. CONSTITUTION:For production of a magnetic disk, a projection removal burnishing process, i.e., a process under which a contact is secured between a head containing an abrasive grain layer formed by sticking a lapping tape 1 onto the rubbing surface and a revolving surface of a magnetic film in order to remove more effectively the floating obstacles is applied in place of a conventional burnishing process using a low floating head made of a hard material such as alumina, etc. For instance, the tape 1 made of alumina of 9mum grain size is stuck to a ramp load head 2, and the tape 1 has a contact with the head 2 while a magnetic film (aluminum substrate) 3 is revolved about 500rpm. Then the tape 1 is moved reciprocatedly several times toward the radius direction (direction F in the figure). The surface projections of the disk can be removed with such a burnishing process.

67. 发明专利

JPS5958631A Painting method of magnetic disc 失效
标题翻译：磁盘绘画方法
公开(公告)号：JPS5958631A
公开(公告)日：1984-04-04
申请号：JP16751882
申请日：1982-09-28
申请人： Fujitsu Ltd
发明人： MAEDA MIYOZOU , FUKUSHIMA SHIGERU , SUENAGA TADATOSHI , ITOU KENICHI , NARUMI TOSHIKATSU
IPC分类号： B05C11/08 , B05D1/40 , G11B5/842
CPC分类号： G11B5/842
摘要： PURPOSE:To attain discs of the same thickness efficiently, by supporting many substrates for magnetic discs on a rotatable shaft and immersing substrates in an painting tank, which is provided with a circulating filter and is charged with a magnetic paint, in a prescribed depth to apply a magnetic paint uniformly to them. CONSTITUTION:A paint 1 where a magnetic powder and a resin are dispersed and dissolved in a solvent is put in a tank 2, and the paint is filtered by a filter 3, and the filtered paint is circulated by a pump 4. Substrates 5 for magnetic discs are held between spacers 8 on a shaft 7, and the whole of a supporting device A is allowed to fall to such position of the tank 2 by descending of an elevator (which is not shown in Fig.) that spacers 8 are not immersed in the paint 1, and lower halves of substrates 5 are immersed in the paint 1, and the shaft is rotated by a motor 6 to rotate substrates 5 in a speed of 5-30 rotations/minute, and the paint is applied to them uniformly. Next, the device A is pulled up from the tank 2, and the rotation number is increased to the excess paint, and the magnetic powder is orientated with a permanent magnet 9 by an electromagnet, thus terminating painting. Then, the magnetic paint is applied to many substrates simultaneously with the same thickness uniformly.
摘要翻译：目的：为了有效地获得相同厚度的圆盘，通过在旋转轴上支撑许多用于磁盘的基板，并将基板浸入设置有循环过滤器的涂装槽中，并将其装入规定的深度至对它们均匀地涂上磁性涂料。构成：将磁粉和树脂分散溶解在溶剂中的涂料1放入罐2中，通过过滤器3过滤油漆，通过泵4使过滤后的油漆循环。基板5 磁盘被保持在轴7上的间隔件8之间，并且允许整个支撑装置A通过升降机（图中未示出）下降到罐2的这个位置，隔离件8不是浸渍在涂料1中，将基材5的下半部分浸入涂料1中，并通过马达6旋转轴，以5〜30转/分钟的速度旋转基板5，并将涂料施加到它们均匀。接下来，将装置A从罐2拉起，旋转数增加到多余的涂料，并且磁性粉末用永磁体9通过电磁体取向，从而终止喷涂。然后，以相同的厚度均匀地将磁性涂料同时施加到许多基材上。

68. 发明专利

JPS58224439A Manufacture of magnetic disk 失效
标题翻译：磁盘的制造
公开(公告)号：JPS58224439A
公开(公告)日：1983-12-26
申请号：JP10796882
申请日：1982-06-23
申请人： Fujitsu Ltd
发明人： ITOU KENICHI , SUENAGA TADATOSHI , MAEDA MIYOZOU , NARUMI TOSHIKATSU , FUKUSHIMA SHIGERU
IPC分类号： G11B5/82 , G11B5/84
CPC分类号： G11B5/84
摘要： PURPOSE:To prevent fouling between a rough part and a magnetic disk and the stripping of the rough part, by applying a lubricant to the rough part formed on the surface of the slider of a varnishing head and by carrying out varnishing while rotating the magnetic disk. CONSTITUTION:A rough part 2 is formed on the surface 11 of the slider 1 of a varnishing head 3 attached to gimbal spring 6 by sticking a lapping tape having an abrasive grain layer contg. hard fine grains to the surface 11 with a double- coated adhesive tape 7 or an adhesive. A soln. of a lubricant such as perfluoroalkyl polyether is applied to the part 2 and dried. The part 2 is then brought into contact with the magnetic layer of a magnetic disk 4, and the surface of the magnetic layer is varnished while rotating the disk 4. Thus, the surface finishing of the ramp load type magnetic disk is carried out without causing fouling between the part 2 and the magnetic layer and the stripping of the part 2 owing to the lubricant applied to the part 2.
摘要翻译：目的：为了防止粗糙部分和磁盘之间的结垢以及粗糙部分的剥离，通过在形成于上漆头的滑块的表面上的粗糙部分上涂抹润滑剂，并且在旋转磁盘的同时进行上光。构成：通过粘贴具有磨粒颗粒层的研磨带，在附接到万向弹簧6的上光头3的滑块1的表面11上形成粗糙部分2。用双面胶带7或粘合剂将表面11上的硬细颗粒加到表面11上。一个soln 的润滑剂如全氟烷基聚醚施加到部件2上并干燥。然后将部件2与磁盘4的磁性层接触，并且在旋转盘4的同时使磁性层的表面被清漆。因此，斜坡负载型磁盘的表面精加工被执行而不引起由于施加到部件2上的润滑剂，部件2和磁性层之间的结垢以及部件2的剥离。

69. 发明专利

JPS58141468A INSPECTING METHOD OF MAGNETIC DISC DEVICE 失效
公开(公告)号：JPS58141468A
公开(公告)日：1983-08-22
申请号：JP2236282
申请日：1982-02-15
申请人： FUJITSU LTD
发明人： NARUMI TOSHIKATSU , ITOU KENICHI , SUENAGA TADATOSHI
IPC分类号： G11B21/21 , G11B33/10
摘要： PURPOSE:To offer an inspecting method capable of inspecting easily the floating characteristic of a magnetic disc device, where a part of an actuator is provided outside of a disc enclosure. CONSTITUTION:An AE element 4 is stuck to an actuator part outside the enclosure. The AE element is stuck there with an instantaneous adhesive such as an alpha-cyano-acrylate. If a magnetic head is not floated sufficiently and rubs on the surface of the magnetic disc when the magnetic disc is rotated, the rubbing tone generated by rubbing is transmitted through an arm 4 and a rotation shaft 9 and reaches the AE element through a coil 3 and a stopper 2, and the AE element 4 outputs an electric signal corresponding to the rubbing tone. Consequently, the contacting condition between the magnetic disc and the magnetic head is discriminated on a basis of this output signal.

70. 发明专利

JPS5848227A MAGNETIC DISK MEDIUM 失效
公开(公告)号：JPS5848227A
公开(公告)日：1983-03-22
申请号：JP14476781
申请日：1981-09-16
申请人： FUJITSU LTD
发明人： ITOU KENICHI , NARUMI TOSHIKATSU , HAMADA MITSURU , ISHIDA SHIYOUJI
IPC分类号： G11B5/82
摘要： PURPOSE:To prevent an adsorption phenomenon without abrasion and deterioration of a head and to improve the reliability and storage capacity, by making the surface of the contact start-stop area rougher than that of the record reproducing area. CONSTITUTION:A magnetic disk 3 in which a magnetic layer 1 is installed on an aluminium substrate 2 is rotated. A grain layer 4 is installed on the lower surface of a slider 6 of a lamp load head 5. This head 5 is controlled so that it slides by contacting with the disk surface in a record reproducing area Q on the disk surface and unloads by separating from the disk surface in a contact start- stop area P. In this way, minutely projected parts are removed from the surface of the area Q and minute projected parts 7 remain on the surface of the area P. As a result, the area P has minute projections of >=0.1mum and its surface is made rougher than the area Q.

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