专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20040091610A1 Method for manufacturing magnetic recording medium 有权
标题翻译：磁记录介质的制造方法
公开(公告)号：US20040091610A1
公开(公告)日：2004-05-13
申请号：US10678094
申请日：2003-10-06
申请人： FUJI PHOTO FILM CO., LTD.
发明人： Koji Naoe
IPC分类号： B05D005/12
CPC分类号： G11B5/842 , G11B5/8412
摘要： The method is for manufacturing the magnetic recording medium in which a magnetic coating containing a ferromagnetic powder and a binder is applied on a nonmagnetic support. The magnetic coating includes: a magnetic liquid containing a ferromagnetic powder and a binder, and an abrasive liquid containing an abrasive and a solvent. The abrasive liquid may further contain the binder. The magnetic liquid and the abrasive liquid are each separately subjected to dispersion treatment, then the abrasive liquid is filtered, and then the magnetic liquid and the abrasive liquid are mixed. The obtained magnetic recording medium has a smooth magnetic layer surface, good electromagnetic conversion properties and excellent running durability and shows little wear of a head.
摘要翻译：该方法用于制造磁性记录介质，其中含有铁磁性粉末和粘合剂的磁性涂层涂覆在非磁性载体上。磁性涂层包括：含有铁磁粉末和粘合剂的磁性液体，以及含有研磨剂和溶剂的磨料液体。研磨液体还可以含有粘合剂。磁性液体和研磨液分别进行分散处理，然后对磨料液进行过滤，然后混合磁性液体和磨料液体。所得到的磁记录介质具有光滑的磁性层表面，良好的电磁转换特性和良好的运行耐久性，并且几乎不影响磁头的磨损。

2. 发明授权

US09275670B2 Methods of production for corrosion-resistant bit patterned media (BPM) and discrete track media (DTM) 有权
标题翻译：耐腐蚀位图案介质（BPM）和离散轨道介质（DTM）的生产方法
公开(公告)号：US09275670B2
公开(公告)日：2016-03-01
申请号：US14223851
申请日：2014-03-24
申请人： HGST Netherlands B.V.
发明人： Qing Dai , Bruno Marchon , Katsumi Mabuchi , Mina Amo
IPC分类号： G11B5/84 , B32B9/00 , G11B5/72 , G11B5/855 , G11B5/74
CPC分类号： G11B5/84 , B32B9/00 , G11B5/72 , G11B5/746 , G11B5/8412 , G11B5/855
摘要： A method for producing a magnetic recording medium in one embodiment includes forming a magnetic material layer above a substrate, transferring an uneven pattern to the magnetic material layer to form concave portions and convex portions, the convex portions being magnetic regions, depositing a nonmagnetic material above the concave portions to form nonmagnetic regions, forming an oxide layer and/or hydroxide layer above the magnetic regions of the recording layer, and forming an organic material layer which exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy above the oxide layer and/or hydroxide layer.
摘要翻译：在一个实施例中，制造磁记录介质的方法包括在基板上形成磁性材料层，将不均匀图案转印到磁性材料层上以形成凹部和凸部，凸部为磁性区域，在上方沉积非磁性材料所述凹部形成非磁性区域，在所述记录层的磁性区域的上方形成氧化物层和/或氢氧化物层，形成相对于所述氧化物层上方的钴或钴合金具有腐蚀抑制特性的有机材料层和/或氢氧化物层。

3. 发明申请

US20140199501A1 METHODS OF PRODUCTION FOR CORROSION-RESISTANT BIT PATTERNED MEDIA (BPM) AND DISCRETE TRACK MEDIA (DTM) 有权
标题翻译：用于耐腐蚀位图形图（BPM）和离散轨迹介质（DTM）的生产方法
公开(公告)号：US20140199501A1
公开(公告)日：2014-07-17
申请号：US14223851
申请日：2014-03-24
申请人： HGST NETHERLANDS B.V.
发明人： Qing Dai , Bruno Marchon , Katsumi Mabuchi , Mina Amo
IPC分类号： G11B5/84
CPC分类号： G11B5/84 , B32B9/00 , G11B5/72 , G11B5/746 , G11B5/8412 , G11B5/855
摘要： A method for producing a magnetic recording medium in one embodiment includes forming a magnetic material layer above a substrate, transferring an uneven pattern to the magnetic material layer to form concave portions and convex portions, the convex portions being magnetic regions, depositing a nonmagnetic material above the concave portions to form nonmagnetic regions, forming an oxide layer and/or hydroxide layer above the magnetic regions of the recording layer, and forming an organic material layer which exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy above the oxide layer and/or hydroxide layer.
摘要翻译：在一个实施例中，制造磁记录介质的方法包括在基板上形成磁性材料层，将不均匀图案转印到磁性材料层上以形成凹部和凸部，凸部为磁性区域，在上方沉积非磁性材料所述凹部形成非磁性区域，在所述记录层的磁性区域的上方形成氧化物层和/或氢氧化物层，形成相对于所述氧化物层上方的钴或钴合金具有腐蚀抑制特性的有机材料层和/或氢氧化物层。

4. 发明申请

US20040013843A1 Method for producing magnetic recording medium 有权
标题翻译：磁记录介质的制造方法
公开(公告)号：US20040013843A1
公开(公告)日：2004-01-22
申请号：US10601593
申请日：2003-06-24
申请人： FUJI PHOTO FILM CO., LTD.
发明人： Koji Naoe
IPC分类号： B32B003/02
CPC分类号： G11B5/714 , G11B5/8412
摘要： In the method for producing a magnetic recording medium having a nonmagnetic substrate coated with a magnetic coating material containing a ferromagnetic powder and a binder, the magnetic coating material contains a liquid A constituted by the ferromagnetic powder and a solvent, and a solution B of the binder, and the liquid A and the solution B are mixed together by applying an ultrasonic wave thereto, and are thereafter subjected to dispersion processing. Thereby, coagulated particles of the ferromagnetic powder can be dispersed and the coagulation of the ferromagnetic powder can be prevented, thus making it possible to obtain a liquid of ferromagnetic powder with uniform adsorption of the binder. As a result, a magnetic coating material suitable for a low-noise high-density coating-type magnetic recording medium is obtained.
摘要翻译：在具有涂覆有含铁磁粉末和粘合剂的磁性涂层材料的非磁性基材的磁记录介质的制造方法中，磁性涂层材料含有由铁磁粉末和溶剂构成的液体A，粘合剂，并且通过向其施加超声波将液体A和溶液B混合在一起，然后进行分散处理。由此，可以分散铁磁性粉末的凝结粒子，能够防止铁磁性粉末的凝结，从而可以获得粘合剂均匀吸附的铁磁性粉末液体。结果，得到适用于低噪声高密度涂布型磁记录介质的磁性涂料。

5. 发明授权

US3282853A Azeotropic composition and process for attenuating magnetic ink characters 失效
标题翻译：共沸组合物和减少磁性墨水特性的方法
公开(公告)号：US3282853A
公开(公告)日：1966-11-01
申请号：US35442664
申请日：1964-03-24
申请人： DU PONT
发明人： BENNETT EDWARD J
IPC分类号： C09D9/00 , C11D7/50 , C23G5/028 , G11B5/702 , G11B5/84
CPC分类号： C23G5/02819 , C09D9/005 , C11D7/5059 , G11B5/702 , G11B5/8412

6. 发明申请

US20170221517A1 MAGNETIC TAPE AND METHOD OF MANUFACTURING THE SAME 审中-公开
公开(公告)号：US20170221517A1
公开(公告)日：2017-08-03
申请号：US15422944
申请日：2017-02-02
申请人： FUJIFILM Corporation
发明人： Eiki OZAWA , Masahito OYANAGI , Norihito KASADA
IPC分类号： G11B5/735 , G11B5/84 , G11B5/733 , G11B5/78 , G11B5/70 , G11B5/73
CPC分类号： G11B5/735 , G11B5/70 , G11B5/7305 , G11B5/733 , G11B5/78 , G11B5/8404 , G11B5/8412
摘要： The magnetic tape has a magnetic layer and a backcoat layer, wherein, each of the magnetic layer and backcoat layer contains a fatty acid ester, the Ra measured on the magnetic layer side surface is less than or equal to 2.8 nm, the difference between the spacing measured by optical interferometry on the magnetic layer side surface after and before vacuum heating is greater than 0 nm but less than or equal to 8.0 nm, the FWHMbefore on the backcoat layer side surface is greater than 0 nm but less than or equal to 10.0 nm, the FWHMafter on the backcoat layer side surface is greater than 0 nm but less than or equal to 10.0 nm; and the difference between the spacing measured on the backcoat layer side surface after and before vacuum heating is greater than 0 nm but less than or equal to 8.0 nm.

7. 发明申请

US20130301157A1 CORROSION-RESISTANT BIT PATTERNED MEDIA (BPM) AND DISCRETE TRACK MEDIA (DTM) AND METHODS OF PRODUCTION THEREOF 有权
标题翻译：耐腐蚀位图形图（BPM）和离散轨迹介质（DTM）及其生产方法
公开(公告)号：US20130301157A1
公开(公告)日：2013-11-14
申请号：US13466970
申请日：2012-05-08
申请人： Qing Dai , Bruno Marchon , Katsumi Mabuchi , Mina Amo
发明人： Qing Dai , Bruno Marchon , Katsumi Mabuchi , Mina Amo
IPC分类号： G11B5/72 , B32B9/00 , B05D5/12 , G11B21/02
CPC分类号： G11B5/84 , B32B9/00 , G11B5/72 , G11B5/746 , G11B5/8412 , G11B5/855
摘要： In one embodiment, a magnetic recording medium includes a magnetic recording layer including a magnetic material characterized by having convex and concave portions, the convex portions acting as magnetic regions, a nonmagnetic material positioned within each concave portion of the magnetic material which act as nonmagnetic regions that separate the magnetic regions, an organic material layer which exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy positioned on a nonmagnetic region side of each concave portion, and an oxide layer and/or hydroxide layer positioned adjacent the organic material layer on a magnetic region side of each concave portion of the magnetic material. In another embodiment, the magnetic recording medium may be a patterned recording layer having a protective film, and the oxide layer and/or hydroxide layer may be positioned at least in defect portions of the protective film.
摘要翻译：在一个实施例中，磁记录介质包括磁记录层，该磁记录层包括磁性材料，其特征在于具有凸部和凹部，凸部作为磁区，位于磁性材料的每个凹部内的非磁性材料作为非磁性区分离磁性区域，相对于位于每个凹部的非磁性区域侧的钴或钴合金表现出腐蚀抑制特性的有机材料层和邻近有机材料层定位的氧化物层和/或氢氧化物层在磁性材料的每个凹部的磁性区域侧。在另一个实施例中，磁记录介质可以是具有保护膜的图案化记录层，并且氧化物层和/或氢氧化物层可至少位于保护膜的缺陷部分中。

8. 发明申请

US20130119015A1 MANUFACTURING METHOD OF A GLASS SUBSTRATE FOR A MAGNETIC DISK 有权
标题翻译：一种用于磁盘的玻璃基板的制造方法
公开(公告)号：US20130119015A1
公开(公告)日：2013-05-16
申请号：US13379864
申请日：2011-03-31
申请人： Yosuke Suzuki
发明人： Yosuke Suzuki
IPC分类号： G11B5/84
CPC分类号： G11B5/8412 , B08B3/12 , B24B37/042 , C03C19/00 , C03C23/0075 , G11B5/8404
摘要： An object of the invention is to effectively remove particles on the glass substrate surfaces, even in the case wherein abrasive particles having a small particle size is used in the polishing step of the glass substrate and a supersonic treatment is performed at a high frequency at the supersonic cleaning step after the polishing step. In a manufacturing method of a glass substrate for a magnetic disk comprising a polishing step for performing polishing of the glass substrate and a supersonic cleaning step for performing supersonic cleaning of the glass substrate after the polishing step, the polishing step uses abrasive particles having a particle size of 10 nm to 30 nm and a first supersonic cleaning is performed at a frequency of 300 kHz to 1,000 kHz to form secondary particles and then a second supersonic cleaning is performed at a frequency of 30 kHz to 100 kHz in the supersonic cleaning step.
摘要翻译：本发明的目的是有效地去除玻璃基板表面上的颗粒，即使在玻璃基板的研磨步骤中使用具有小粒径的磨粒的情况下，也可以在高频下进行超音速处理抛光步骤后的超音速清洗步骤。在一种用于磁盘的玻璃基板的制造方法中，包括用于进行玻璃基板的抛光的抛光步骤和在抛光步骤之后进行玻璃基板的超音速清洁的超音速清洁步骤，抛光步骤使用具有颗粒的磨料颗粒在300kHz至1000kHz的频率下进行10nm至30nm的尺寸和第一超音速清洁以形成二次颗粒，然后在超音速清洁步骤中以30kHz至100kHz的频率进行第二超音速清洁。

9. 发明授权

US4044174A Ultrasonically smoothing a magnetic layer on a web 失效
标题翻译：在网上超声波平滑磁性层
公开(公告)号：US4044174A
公开(公告)日：1977-08-23
申请号：US280306
申请日：1972-08-14
申请人： David L. Carr
发明人： David L. Carr
IPC分类号： G11B5/633 , G11B5/74 , G11B5/84 , H01F10/02
CPC分类号： G11B5/8412 , G11B5/633 , G11B5/74
摘要： A layer of magnetic particles in a resin binder on a carrier is smoothed by effecting relative movement between the carrier and a vibrating ultrasonic horn having a surface in contact with the layer. The carrier can be a web of fully coated magnetic tape or of striped motion picture film; and can be passed over a solid metal anvil or can be drawn tautly over the horn without requiring an anvil. The horn can be perpendicular to the carrier for hammering the layer; or it can be essentially parallel to the surface of the carrier, and either transversely or longitudinally extending, for scrubbing the layer smooth. The smoothing procedure can also be performed while the carrier is immersed in a solvent for removing dirt particles. Advantageously the procedure is performed when the binder is fresh and less than fully cured; but it can also be performed by heating a resin binder to the desired plasticity before the smoothing operation.
摘要翻译：通过在载体和具有与该层接触的表面的振动超声波喇叭之间的相对运动来平滑载体上的树脂粘合剂中的一层磁性颗粒。载体可以是完全涂覆的磁带或条纹电影胶片的网; 并且可以通过固体金属砧座，或者可以在不需要砧座的情况下被拉紧地拉过喇叭。喇叭可以垂直于载体敲击该层; 或者它可以基本上平行于载体的表面，并且横向或纵向延伸，以便平滑地洗涤层。当载体浸入用于除去污垢颗粒的溶剂中时，也可以进行平滑化处理。有利的是，当粘合剂是新鲜的并且不足以完全固化时进行该过程; 但是也可以在平滑操作之前将树脂粘合剂加热至所需的塑性来进行。

10. 发明授权

US3190748A Preparation of oxalate magnetic particles 失效
标题翻译：草酸盐磁性颗粒的制备
公开(公告)号：US3190748A
公开(公告)日：1965-06-22
申请号：US26181863
申请日：1963-02-28
申请人： AMPEX
发明人： LANDGRAF WILLIAM C
IPC分类号： B22F9/22 , C07C51/41 , C09C1/22 , G11B5/84 , H01F1/06 , H01F1/36 , H01F1/42
CPC分类号： H01F1/42 , B22F9/22 , C01P2002/52 , C01P2006/42 , C07C51/412 , C09C1/22 , G11B5/8412 , H01F1/065 , H01F1/36 , C07C55/07

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式