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11. 发明专利

JPS61289530A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPS61289530A
公开(公告)日：1986-12-19
申请号：JP12982085
申请日：1985-06-17
申请人： HITACHI LTD
发明人： KOKADO YUICHI , KITO MAKOTO , HONDA YOSHINORI
IPC分类号： G11B5/72 , C09D161/06 , C09D163/00 , C09D177/00 , C09D179/08 , G11B5/64 , G11B5/725 , G11B5/73
摘要： PURPOSE:To remarkably improve the life of a magnetic recording medium by providing a magnetic layer consisting of a material having ferromagnetism, a layer consisting of an org. material and a layer consisting of carbon in this order on a supporting base body. CONSTITUTION:The org. material layer is provided as an intermediate layer between a carbon film and the magnetic layer. The carbon layer is formed by a method for forming said layer under the conditions under which electrons, ions or neutral particles having the energy enough to disconnect the bond of the org. material surface in the initial period of formation are made incident on the treated surface. The org. material to be used for the org. material layer is required to be made into a thinner film having preferably 0.1-0.001mum thickness and has preferably >=50kg/cm adhesive power. The method for forming the org. material layer includes coating, sputtering, plasma polymn, and vapor deposition methods. The exfoliation and removal of the carbon protective layer during sliding of the magnetic recording medium with a head is thereby prevented and the lubricating performance intrinsic to carbon is provided. The life of the magnetic recording medium is thus remarkably improved.

12. 发明专利

JPS61126627A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：JPS61126627A
公开(公告)日：1986-06-14
申请号：JP24794584
申请日：1984-11-26
申请人： Hitachi Ltd
发明人： KOKADO YUICHI , KITO MAKOTO , HONDA YOSHINORI
IPC分类号： C23C14/06 , C09D171/02 , C10M103/02 , C10M105/50 , C10M107/38 , C10N40/18 , G11B5/64 , G11B5/66 , G11B5/72 , G11B5/725 , G11B5/73
摘要： PURPOSE: To decrease the coefft. of friction of a recording medium and to improve wear resistance as well as improve the life and reliability of the recording medium as a result of the improvement in the resistance characteristic to sliding with a head by forming a protective layer of a hard carbon film and fluorime-contg. lubricating oil layer.
CONSTITUTION: The composite layer of the hard carbon film and fluorime-contg. lubricating oil layer is provided as the protective layer on a magnetic layer of the recording medium. The hard carbon film is formed by sputtering carbon or graphite carbon stock in an atmosphere of an inert gas or a gaseous mixture composed of the inert gas and gaseous hydrocarbon or subjecting the gaseous hydrocarbon to cracking reaction by electric discharge energy and depositing the same on a substrate. The polyperfluoroalkyl ether of 4,000W6,200mol.wt. expressed by the formula [CF(R)-CF
2 -O]
n is used as the fluorime-contg. lubricating oil. R in this formula is made F, CF
3 or CH
3 .
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：减少系数。的记录介质的摩擦并提高耐磨性，并且由于通过形成硬碳膜和荧光体的保护层来改善与头部滑动的电阻特性，从而提高记录介质的寿命和可靠性 -contg。润滑油层。构成：硬质碳膜复合层和荧光粉润滑油层作为保护层设置在记录介质的磁性层上。硬碳膜通过在惰性气体气氛或由惰性气体和气态烃组成的气体混合物的气氛中溅射碳或石墨碳原料或使气态烃通过放电能量进行裂化反应而形成，并将其沉积在基质。聚全氟烷基醚为4,000-6,200mol.wt。由式[CF（R）-CF 2 -O] n表示的荧光体含量。润滑油。该式中的R为F，CF 3或CH 3。

13. 发明专利

JPS6164734A Impartment of antistatic property to plastic 失效
标题翻译：防静电物质对塑料的承载力
公开(公告)号：JPS6164734A
公开(公告)日：1986-04-03
申请号：JP18632884
申请日：1984-09-07
申请人： Hitachi Ltd
发明人： TAKEMOTO KAZUNARI , KITO MAKOTO
IPC分类号： C08J7/00 , B29C71/04 , C08L67/02 , G11B5/73
摘要： PURPOSE: To impart a prolonged stable antistatic property to a plastic, by treating it with a low-temperature plasma of a hydrocarbon gas.
CONSTITUTION: A saturated hydrocarbon selected from among aliphatic hydrocarbons such as butane and alicyclic hydrocarbons such as cyclohexane is used as an organic gas for generating a plasma. Namely, a plastic as a base (e.g., polyethylene terephthalate film as a magnetic tape base) is placed in a vacuum container provided with electrodes and said gas is fed to the container. While keeping the pressure in the system at about 10
-5 W5Torr, a high-frequency power is applied between the electrodes and the plastic is surfacetreated with the generated low-temperature plasma.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过用碳氢化合物气体的低温等离子体处理，使塑料具有长时间稳定的抗静电性能。构成：使用选自脂族烃如丁烷和脂环族烃如环己烷的饱和烃作为产生等离子体的有机气体。即，将作为基材的塑料（例如，作为磁带基材的聚对苯二甲酸乙二醇酯膜）放置在设置有电极的真空容器中，并将所述气体供给到容器中。在将系统中的压力保持在约10 -5 -5乇的同时，在电极之间施加高频电力，并且用生成的低温等离子体对塑料进行表面处理。

14. 发明专利

JP2507531B2 失效
公开(公告)号：JP2507531B2
公开(公告)日：1996-06-12
申请号：JP9340488
申请日：1988-04-18
申请人： HITACHI LTD
发明人： KOKADO JUICHI , KITO MAKOTO , ITO MAKIKO
IPC分类号： G11B5/84

15. 发明专利

JPH07312051A PRODUCTION OF MAGNETIC HEAD SLIDER AND MAGNETIC HEAD SLIDER 失效
公开(公告)号：JPH07312051A
公开(公告)日：1995-11-28
申请号：JP10016994
申请日：1994-05-13
申请人： HITACHI LTD
发明人： MATSUNUMA SATORU , KITO MAKOTO
IPC分类号： G11B21/21 , G11B5/187 , G11B5/255
摘要： PURPOSE:To enhance the sliding resistance characteristic of a magnetic head slider and to prevent tacky adhesion this slider with a magnetic recording medium by exposing the surfaces of the slider to gases of xenon fluorides, thereby forming fluorinated films thereon. CONSTITUTION:The fluorinated films 4 are formed on the extreme surfaces of the slider rails 21 and floating surface 22 of the slider 1 formed with thin-film magnetic heads 2 by exposing the surfaces to gases contg. at least one among the xenon difluoride, xenon trifluoride, xenon tetrafluoride and xenon hexafluoride. As a result, the films 4 in which fluorine is incorporated are formable at a high density on the material constituting the slider, by which the sliding resistance characteristic and more particularly the tacky adhesion to the magnetic recording medium are prevented. Protective films 3 are preferably formed of a material different from the material constituting the slider 1 prior to the surface treatment stage by gases of xenon fluorides. The films 3 are preferably formed of amorphous carbon.

16. 发明专利

JPH0773455A MAGNETIC RECORDING MEDIUM AND ITS PRODUCTION 失效
公开(公告)号：JPH0773455A
公开(公告)日：1995-03-17
申请号：JP21882193
申请日：1993-09-02
申请人： HITACHI LTD
发明人： MATSUNUMA SATORU , KITO MAKOTO , FUJIMAKI SHIGEHIKO
IPC分类号： G11B5/66 , G11B5/72 , G11B5/84
摘要： PURPOSE:To provide a magnetic recording medium having a protective lubricant film which shows an excellent slide characteristic and to provide an efficient producing method for this medium. CONSTITUTION:In a chamber 1, a magnetic disk substrate 2 which is finished up to formation of a magnetic recording film is rotated by a moving mechanism 3, and pressured material gas 16 is sprayed from a material gas cylinder 7 through a mixing spray valve 5 in this state and is rectified through holes of partitions 17. The gas is irradiated with light of a heavy hydrogen lamp 6 to make material molecules radical, and these molecules are made to collide against the substrate 2 to form the protective lubricant film.

17. 发明专利

JPH0773454A PRODUCTION OF CARBON PROTECTIVE FILM AND PLASMA TREATING DEVICE 失效
公开(公告)号：JPH0773454A
公开(公告)日：1995-03-17
申请号：JP21719393
申请日：1993-09-01
申请人： HITACHI LTD
发明人： INABA HIROSHI , KOKADO YUICHI , MATSUMOTO HIROSHI , FUJIMAKI SHIGEHIKO , KITO MAKOTO
IPC分类号： B01J19/08 , C01B31/02 , C23C16/26 , G11B5/72
摘要： PURPOSE:To provide a magnetic recording medium having a high-hardness protective film by superposing a positive DC bias voltage on the output of a high-frequency power source at the time of forming plasma by using the high-frequency power source, thereby executing film formation selectively using the negative ion active species in plasma. CONSTITUTION:An electrode 1 commonly used as a vacuum chamber is evacuatable to a pressure below the atm. pressure and generates plasma when a high voltage is impressed thereto. A DC positive voltage impressing device 4 and a choke coil 9 impresses a DC positive voltage to a substrate holder 3 commonly used as a third electrode holding a disk substrate 2 to be treated. The high-frequency power source 5 supplies high-frequency electric power to the electrode 1 commonly used as the vacuum chamber via a blocking capacitor 10. As a result, the film formation selectively using the negative ions of C, CH which are ion active species without contg. many H atoms is executed to obtain the film mainly composed of the C single bond having the small quantity of H, and the magnetic recording medium having the high-hardness protective film of the quality quantitively and collectively evaluated from Raman spectra.

18. 发明专利

JPH0721857B2 失效
公开(公告)号：JPH0721857B2
公开(公告)日：1995-03-08
申请号：JP3791087
申请日：1987-02-23
申请人： HITACHI LTD
发明人： KOKADO JUICHI , KITO MAKOTO , PPONDA YOSHINORI
IPC分类号： G11B5/66 , C09D171/02 , C10M105/02 , C10M105/24 , C10M105/34 , C10M107/38 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725 , G11B5/73

19. 发明专利

JPH06162491A MAGNETIC RECORDING MEDIUM, ITS PRODUCTION AND MAGNETIC RECORDER 失效
公开(公告)号：JPH06162491A
公开(公告)日：1994-06-10
申请号：JP30518592
申请日：1992-11-16
申请人： HITACHI LTD
发明人： MATSUNUMA SATORU , KOKADO YUICHI , KITO MAKOTO
IPC分类号： G11B5/72 , G11B5/84 , G11B33/14
摘要： PURPOSE:To obtain a magnetic recording medium excellent in durability and whetherability by forming a lubricative thin film fixed by string chemical bond on the surface of a protective film. CONSTITUTION:A Cr underlayer 4, a magnetic recording film 3 and a protective film 2 of amorphous carbon are successively formed on an Al substrate 5 and the surface of the protective film 2 is exposed to gaseous xenon fluoride at room temp. to form a fluorinated thin film on the surface. By a reaction of the amorphous carbon with the xenon fluoride, F-C bonds are formed on the surface of the protective film and lubricity is exhibited.

20. 发明专利

JPH06103745A MAGNETIC RECORDER 失效
公开(公告)号：JPH06103745A
公开(公告)日：1994-04-15
申请号：JP24611892
申请日：1992-09-16
申请人： HITACHI LTD
发明人： MATSUNUMA SATORU , KOKADO YUICHI , KITO MAKOTO
IPC分类号： G11B33/14
摘要： PURPOSE:To provide the magnetic recorder having excellent durability and weatherability by collecting the dust and foreign matter in the device by static electricity. CONSTITUTION:A metallic disk 9 with an org. high-molecular coating film is mounted onto the same revolving shaft 6 as the revolving shaft of a magnetic disk 1 so as to face this magnetic disk 1. A magnetic head 7 supported by a head supporting spring 8 is pressed onto the surface of the one magnetic disk 1 and a sliding spring 10 made of an org. high-molecular material onto the other metallic disk 9 with the org. high-molecular coating film, respectively under prescribed pressing forces. As a result, the static electricity is generated on the surface of the metallic disk 9 with the org. high-molecular coating film by the friction of the magnetic disk 8 with the org. high-molecular coating film rotating together with the magnetic disk 1 and the sliding spring 10 made of the org. high-molecular material, thereby, the dust in the device is collected.

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