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1. 发明申请

US20080241600A1 MAGNETIC RECORDING MEDIUM AND PROCESS FOR PRODUCING THE SAME 审中-公开
标题翻译：磁记录介质及其制造方法
公开(公告)号：US20080241600A1
公开(公告)日：2008-10-02
申请号：US12056568
申请日：2008-03-27
申请人： Hiroyuki Tanaka , Tsutomu Ide , Osamu Inoue
发明人： Hiroyuki Tanaka , Tsutomu Ide , Osamu Inoue
IPC分类号： G11B5/66 , B05D5/12
CPC分类号： G11B5/73 , G11B5/7026
摘要： The present invention provides a magnetic recording medium wherein a fine non-magnetic inorganic powder, the dispersibility of which is improved, is used to improve the surface smoothness of a lower non-magnetic layer, thereby giving an excellent surface smoothness of an upper magnetic layer and electromagnetic conversion property; and a production process thereof. A magnetic recording medium comprising at least a non-magnetic support, a lower non-magnetic layer on one surface of the non-magnetic support, and an upper magnetic layer on the lower non-magnetic layer, wherein the upper magnetic layer contains at least a ferromagnetic powder, and a binder resin material, and the lower non-magnetic layer contains at least carbon black, iron oxide, and a binder resin material, and the iron oxide has an average major axis length of 30 to 100 nm, and a specific surface area based on the BET method of 80 to 120 m2/g, and the iron oxide contains moisture in an amount per unit specific surface area of 0.13 to 0.25 mg/m2.
摘要翻译：本发明提供了一种磁记录介质，其中改善了其分散性的细非磁性无机粉末用于改善下部非磁性层的表面平滑度，从而赋予上层磁性层优异的表面平滑度和电磁转换特性; 及其制造方法。至少包括非磁性载体，非磁性载体的一个表面上的下部非磁性层和下部非磁性层上的上磁性层的磁记录介质，其中上部磁性层至少含有铁磁粉末和粘结剂树脂材料，下部非磁性层至少含有炭黑，氧化铁和粘合剂树脂材料，氧化铁的平均长轴长度为30〜100nm，基于BET法的比表面积为80〜120m 2 / g，氧化铁含有每单位比表面积为0.13〜0.25mg / m 2的水分， / SUP>。

2. 发明授权

US07160481B2 Method for manufacturing magnetic paint, and magnetic recording medium 有权
标题翻译：磁性涂料的制造方法和磁记录介质
公开(公告)号：US07160481B2
公开(公告)日：2007-01-09
申请号：US10765139
申请日：2004-01-28
申请人： Katsuhiko Yamazaki , Tsutomu Ide , Hiroyuki Tanaka
发明人： Katsuhiko Yamazaki , Tsutomu Ide , Hiroyuki Tanaka
IPC分类号： G11B5/842
CPC分类号： G11B5/714 , G11B5/842 , H01F1/0027 , H01F1/44 , H01F41/16
摘要： A method for manufacturing magnetic paint is provided, wherein a dispersion condition is appropriately controlled to excellently disperse a magnetic powder composed of fine particles adaptable for a higher recording density, so that magnetic paint having excellent dispersibility can be prepared, and a magnetic recording medium having excellent surface roughness is provided. The magnetic paint is prepared by the step of subjecting a mixed solution containing at least a binder, a solvent, and a magnetic powder to a dispersion treatment with a dispersion device by the use of dispersion media through at least dispersion step, wherein the dispersion in the main dispersion step is carried out by the use of dispersion media having an average particle diameter y (mm) satisfying the relationship, which is represented by formula y≦0.01x, with the average maximum diameter x (nm) of the magnetic powder.
摘要翻译：提供一种制造磁性涂料的方法，其中适当地控制分散条件，以使由适合于较高记录密度的微粒组成的磁性粉末非常好地分散，从而可以制备具有优异分散性的磁性涂料，以及具有提供优异的表面粗糙度。该磁性涂料是通过至少分散步骤，通过使用分散介质使至少含有粘合剂，溶剂和磁性粉末的混合溶液用分散装置进行分散处理的步骤来制备的，其中分散体主分散步骤通过使用平均粒径y（mm）的分散介质进行，该分散介质满足由公式y <= 0.01x表示的关系，其中磁粉的平均最大直径x（nm）。

3. 发明申请

US20060222906A1 Radiation curing polyurethane resin for magnetic recording medium, method of manufacturing radiation curing polyurethane resin for magnetic recording medium, and magnetic recording medium 审中-公开
标题翻译：用于磁记录介质的辐射固化聚氨酯树脂，用于磁记录介质的辐射固化聚氨酯树脂的制造方法和磁记录介质
公开(公告)号：US20060222906A1
公开(公告)日：2006-10-05
申请号：US11392786
申请日：2006-03-30
申请人： Hiroyuki Tanaka , Tsutomu Ide , Katsuhiko Yamazaki
发明人： Hiroyuki Tanaka , Tsutomu Ide , Katsuhiko Yamazaki
IPC分类号： G11B5/716
CPC分类号： C08G18/0828 , C08G18/8175 , C09D175/16 , G11B5/7021 , G11B5/73 , Y10T428/31551
摘要： A radiation curing polyurethane resin for a magnetic recording medium which is capable of realizing a lower non-magnetic layer that can secure sufficient coating film strength with a lower radiation dose. A polyurethane resin which contains active hydrogen, and a sulfur-containing polar group in an amount of not less than 0.05 mmol/g to not more than 0.10 mmol/g, inclusive, but does not contain a basic polar group in its molecule and is formed only by an aliphatic segment, is modified on the active hydrogen into a radiation curing polyurethane resin by a compound having an acrylic double bond.
摘要翻译：一种用于磁记录介质的辐射固化聚氨酯树脂，其能够实现能够以较低辐射剂量确保足够的涂膜强度的较低非磁性层。含有活性氢和含硫极性基团的聚氨酯树脂，其含量不小于0.05mmol / g至不超过0.10mmol / g，但在其分子中不含碱性极性基团，并且为仅由脂肪族链段形成，通过具有丙烯酸双键的化合物将活性氢改性为辐射固化聚氨酯树脂。

4. 发明申请

US20060124887A1 Method for manufacturing magnetic paint, method for manufacturing non-magnetic paint and magnetic recording medium 有权
标题翻译：磁性涂料的制造方法，非磁性涂料和磁记录介质的制造方法
公开(公告)号：US20060124887A1
公开(公告)日：2006-06-15
申请号：US11346320
申请日：2006-02-03
申请人： Katsuhiko Yamazaki , Tsutomu Ide
发明人： Katsuhiko Yamazaki , Tsutomu Ide
IPC分类号： H01F1/00
CPC分类号： C09D5/36 , C08J3/212 , G11B5/70 , G11B5/738
摘要： A method for manufacturing magnetic paint or non-magnetic paint, which can produce a magnetic recording medium having excellent surface smoothness by appropriately setting the condition of a dispersion process for improving the dispersibility of the paint, and a magnetic recording medium are provided. The magnetic paint or the non-magnetic paint is produced by performing a dispersion process of a mixed solution, in which a magnetic powder or a non-magnetic powder is mixed into a binder solution containing a binder and a solvent, with a medium dispersion device. The method includes the steps of adjusting the viscosity of the mixed solution to 1,500 cP or less on a BL type viscometer at 20 rpm basis, and performing a dispersion process with the medium dispersion device using dispersion media having an average particle diameter of 0.5 mm or less at a dispersion circumferential speed of 8 to 15 m/s.
摘要翻译：提供一种制造磁性涂料或非磁性涂料的方法，其可以通过适当地设定用于改善涂料分散性的分散方法的条件和磁记录介质来制备具有优异表面光滑度的磁记录介质。磁性涂料或非磁性涂料是通过将磁性粉末或非磁性粉末混合到含有粘合剂和溶剂的粘合剂溶液中的混合溶液的分散方法与中等分散装置。该方法包括在BL型粘度计上以20rpm为基准将混合溶液的粘度调节至1,500cP以下的步骤，并使用平均粒径为0.5mm的分散介质和介质分散装置进行分散处理，或较少的分散圆周速度为8至15m / s。

5. 发明授权

US06475613B1 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US06475613B1
公开(公告)日：2002-11-05
申请号：US09556313
申请日：2000-04-24
申请人： Tsutomu Ide , Akira Saitoh
发明人： Tsutomu Ide , Akira Saitoh
IPC分类号： G11B5735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/258
摘要： The invention provides a magnetic recording medium which is reduced in the occurrence of a dropout and has excellent durability. The magnetic recording medium comprises a magnetic layer on one surface of a non-magnetic support and a back-coat layer, containing mainly a non-magnetic powder and a binder, on the other surface. The back-coat layer includes (a) a carbon black having an average particle size of 15 to 25 nm, (b) a carbon black having an average particle size of 60 to 80 nm and (c) CaCO3 and/or BaSO4 having an average particle size of 30 to 75 nm as the non-magnetic powder. The back-coat layer preferably includes said carbon black (a), said carbon black (b) and said CaCO3 and/or BaSO4 (c) in a ratio of (a)/(b)/(c)=60-80/3-15/15-30 by weight.
摘要翻译：本发明提供一种磁记录介质，其减少了出现的脱落并且具有优异的耐久性。磁记录介质包括在非磁性载体的一个表面上的磁性层和主要包含非磁性载体的背涂层，磁性粉末和粘合剂，在另一个表面上。背涂层包括（a）平均粒径为15〜25nm的炭黑，（b）平均粒径为60〜80nm的炭黑，（c）CaCO 3和/或BaSO 4具有作为非磁性粉末的平均粒径为30〜75nm。背涂层优选包含所述炭黑（a），所述炭黑（b）和所述CaCO 3和/或BaSO 4（c）的比例为（a）/（b）/（c）= 60-80 / 3-15 / 15-30（重量）。

6. 发明申请

US20080017073A1 METHOD FOR MANUFACTURING MAGNETIC PAINT, METHOD FOR MANUFACTURING NON-MAGNETIC PAINT AND MAGNETIC RECORDING MEDIUM 审中-公开
标题翻译：制造磁性涂料的方法，制造非磁性涂料和磁记录介质的方法
公开(公告)号：US20080017073A1
公开(公告)日：2008-01-24
申请号：US11858141
申请日：2007-09-20
申请人： Katsuhiko YAMAZAKI , Tsutomu Ide
发明人： Katsuhiko YAMAZAKI , Tsutomu Ide
IPC分类号： C09D17/00
CPC分类号： C09D5/36 , C08J3/212 , G11B5/70 , G11B5/73
摘要： A method for manufacturing magnetic paint or non-magnetic paint, which can produce a magnetic recording medium having excellent surface smoothness by appropriately setting the condition of a dispersion process for improving the dispersibility of the paint, and a magnetic recording medium are provided. The magnetic paint or the non-magnetic paint is produced by performing a dispersion process of a mixed solution, in which a magnetic powder or a non-magnetic powder is mixed into a binder solution containing a binder and a solvent, with a medium dispersion device. The method includes the steps of adjusting the viscosity of the mixed solution to 1,500 cP or less on a BL type viscometer at 20 rpm basis, and performing a dispersion process with the medium dispersion device using dispersion media having an average particle diameter of 0.5 mm or less at a dispersion circumferential speed of 8 to 15 m/s.
摘要翻译：提供一种制造磁性涂料或非磁性涂料的方法，其可以通过适当地设定用于改善涂料分散性的分散方法的条件和磁记录介质来制备具有优异表面光滑度的磁记录介质。磁性涂料或非磁性涂料是通过将磁性粉末或非磁性粉末混合到含有粘合剂和溶剂的粘合剂溶液中的混合溶液的分散方法与中等分散装置。该方法包括在BL型粘度计上以20rpm为基准将混合溶液的粘度调节至1,500cP以下的步骤，并使用平均粒径为0.5mm的分散介质和介质分散装置进行分散处理，或较少的分散圆周速度为8至15m / s。

7. 发明授权

US07288210B2 Method for manufacturing magnetic paint, method for manufacturing non-magnetic paint and magnetic recording medium 有权
标题翻译：磁性涂料的制造方法，非磁性涂料和磁记录介质的制造方法
公开(公告)号：US07288210B2
公开(公告)日：2007-10-30
申请号：US11346320
申请日：2006-02-03
申请人： Katsuhiko Yamazaki , Tsutomu Ide
发明人： Katsuhiko Yamazaki , Tsutomu Ide
IPC分类号： B01F13/00 , B02C19/00 , G11B5/00
CPC分类号： C09D5/36 , C08J3/212 , G11B5/70 , G11B5/738
摘要： A method for manufacturing magnetic paint or non-magnetic paint, which can produce a magnetic recording medium having excellent surface smoothness by appropriately setting the condition of a dispersion process for improving the dispersibility of the paint, and a magnetic recording medium are provided. The magnetic paint or the non-magnetic paint is produced by performing a dispersion process of a mixed solution, in which a magnetic powder or a non-magnetic powder is mixed into a binder solution containing a binder and a solvent, with a medium dispersion device. The method includes the steps of adjusting the viscosity of the mixed solution to 1,500 cP or less on a BL type viscometer at 20 rpm basis, and performing a dispersion process with the medium dispersion device using dispersion media having an average particle diameter of 0.5 mm or less at a dispersion circumferential speed of 8 to 15 m/s.
摘要翻译：提供一种制造磁性涂料或非磁性涂料的方法，其可以通过适当地设定用于改善涂料分散性的分散方法的条件和磁记录介质来制备具有优异表面光滑度的磁记录介质。磁性涂料或非磁性涂料是通过将磁性粉末或非磁性粉末混合到含有粘合剂和溶剂的粘合剂溶液中的混合溶液的分散方法与中等分散装置。该方法包括在BL型粘度计上以20rpm为基准将混合溶液的粘度调节至1,500cP以下的步骤，并使用平均粒径为0.5mm的分散介质和介质分散装置进行分散处理，或较少的分散圆周速度为8至15m / s。

8. 发明授权

US5673579A Welded steel pipe manufacturing apparatus and method 失效
标题翻译：焊接钢管制造装置及方法
公开(公告)号：US5673579A
公开(公告)日：1997-10-07
申请号：US662434
申请日：1996-06-10
申请人： Yuuji Hashimoto , Takaaki Toyooka , Motoaki Itadani , Susumu Itadani , Tsutomu Ide
发明人： Yuuji Hashimoto , Takaaki Toyooka , Motoaki Itadani , Susumu Itadani , Tsutomu Ide
IPC分类号： B23K13/00 , B21D5/12 , B21D39/02 , B21B37/00 , B21D37/08 , B21D51/23
CPC分类号： B21D5/12
摘要： In welded pipe manufacturing a steel strip is fed and bent by forming rolls into a pipe. A load detector is provided for a roll rotary shaft of each forming roll; a forming roll inclination adjustment device inclines the roll rotary shaft. The roll shaft load is measured to cause inclining of the rotary shaft counterclockwise or clockwise on a plane formed by the rotational axis of the forming roll and the advancing direction of the steel strip.
摘要翻译：在焊接管制造中，钢带通过将辊成型为管而进给和弯曲。为每个成型辊的辊旋转轴提供负载检测器; 成形辊倾斜调节装置倾斜辊旋转轴。测量辊轴负载以使旋转轴在成形辊的旋转轴线和钢带的前进方向形成的平面上逆时针或顺时针倾斜。

9. 发明申请

US20060210839A1 Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：US20060210839A1
公开(公告)日：2006-09-21
申请号：US11374061
申请日：2006-03-14
申请人： Tsutomu Ide , Katsuhiko Yamazaki , Tomoyuki Kotaki , Sadafumi Iijima
发明人： Tsutomu Ide , Katsuhiko Yamazaki , Tomoyuki Kotaki , Sadafumi Iijima
IPC分类号： G11B5/716
CPC分类号： G11B5/7013 , G11B5/73
摘要： A magnetic recording medium which makes it possible to further increase the recording capacity while maintaining a required flexibility thereof. A magnetic tape has a lower non-magnetic layer and a magnetic layer formed on one surface of a base film in the mentioned order. The lower non-magnetic layer is formed of a non-magnetic coating material containing a non-magnetic powder, an electron beam curing binder, a dispersant having an amine group, and a thermosetting agent.
摘要翻译：一种磁记录介质，其可以进一步提高记录容量，同时保持其所需的柔性。磁带具有较低的非磁性层和以所述顺序形成在基膜的一个表面上的磁性层。下部非磁性层由含有非磁性粉末，电子束固化粘合剂，具有胺基的分散剂和热固化剂的非磁性涂料形成。

10. 发明授权

US06855414B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US06855414B2
公开(公告)日：2005-02-15
申请号：US10629766
申请日：2003-07-30
申请人： Tsutomu Ide , Katsuhiko Yamazaki
发明人： Tsutomu Ide , Katsuhiko Yamazaki
IPC分类号： G11B5/735
CPC分类号： G11B5/735 , Y10T428/257
摘要： A magnetic recording medium comprises a back coat layer containing carbon black and alumina as non-magnetic powder. The relationship between the abrasivity (y) in microns of the back coat layer and the alumina content (x) parts by weight to 100 parts by weight of non-magnetic powder excluding alumina satisfies four equations y≦4.6x+12.2, y≧4.1x+10.8, y≧13, y≦17. The abrasivity is measured such that an edge of a prismatic Sendust bar is pushed perpendiculary onto the back coat layer such that the magnetic recording medium is pressed at an approaching angle of 12 degree, and the magnetic recording medium is supported by a tension of 0.526 N/cm per unit width and a 50-m length thereof is moved back and forth one time over the Sendust bar at a running speed of 0.3 m/s.
摘要翻译：磁记录介质包括含有炭黑和氧化铝作为非磁性粉末的背涂层。背涂层的研磨性（y）与氧化铝含量（x）重量份之间的关系与100重量份除氧化铝之外的非磁性粉末的关系满足四个等式y <= 4.6x + 12.2，y> = 4.1x + 10.8，y> = 13，y <= 17。测量磨损性，使得棱柱形塞浦路斯棒的边缘被垂直地推到背涂层上，使得磁记录介质以接近的角度12度被压制，并且磁记录介质由0.526N的张力支撑 / cm，长度为50μm的长度在0.3m / s的运行速度下在Sendust杆上前后移动一次。

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