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81. 发明专利

JP2007149259A Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：JP2007149259A
公开(公告)日：2007-06-14
申请号：JP2005344063
申请日：2005-11-29
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： MATSUO KAZUKI , KISHIMOTO MIKIO , ISOE NOBORU , SASAKI YUJI
IPC分类号： G11B5/735 , G11B5/706 , G11B5/708
摘要： PROBLEM TO BE SOLVED: To obtain a magnetic recording medium which has excellent short wavelength characteristics and is chemically stable.
SOLUTION: In the magnetic recording medium having a magnetic layer containing magnetic powder and a binder on one surface of a non-magnetic support and a back coat layer on the other surface of the non-magnetic support, as the magnetic powder, granular or elliptical magnetic powder having at least iron and nitrogen as constituent elements, containing an Fe
16 N
2 phase and having 5 to 50 nm average particle size is used and especially an amino group containing compound is incorporated in the back coat layer as an anticorrosive.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：获得具有优异的短波长特性并且化学稳定的磁记录介质。解决方案：在非磁性载体的一个表面上具有磁性粉末和粘合剂的磁性层的磁性记录介质和非磁性载体的另一个表面上的背涂层作为磁性粉末，使用具有至少铁和氮作为构成元素的颗粒状或椭圆形的磁粉，其含有平均粒径为5〜50nm的FeS / SBN N SB 2相，特别是含有氨基的化合物作为防腐剂掺入背涂层中。版权所有（C）2007，JPO＆INPIT

82. 发明专利

JP2006179106A Magnetic tape 有权
标题翻译：磁带
公开(公告)号：JP2006179106A
公开(公告)日：2006-07-06
申请号：JP2004370698
申请日：2004-12-22
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： SASAKI YUJI , MATSUO KAZUKI , KISHIMOTO MIKIO , KUZE SADAMU
IPC分类号： G11B5/78
摘要： PROBLEM TO BE SOLVED: To provide a magnetic tape having high output, a satisfactory reproduction output noise ratio (C/N) and satisfactory reliability, especially a magnetic tape showing a satisfactory reproduction output noise ratio (C/N) and satisfactory tracking characteristics in a short wavelength band adaptive to high capacity of 1 TB or more and having high recording density characteristics and excellent reliability. SOLUTION: The magnetic tape has a non-magnetic support and at least one magnetic layer on one surface of the non-magnetic support, wherein an edge weave amount of the magnetic tape is 1 μm or below and the difference [Hc MD -Hc TD ] between coercive force Hc MD in the longitudinal direction of the uppermost magnetic layer of the magnetic tape and coercive force Hc TD in the lateral direction thereof is 140 kA/m or above and Hc MD or below. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供具有高输出，令人满意的再现输出噪声比（C / N）和令人满意的可靠性的磁带，特别是显示令人满意的再现输出噪声比（C / N）的令牌适应于1TB以上的高容量且具有高记录密度特性和优异可靠性的短波长带中的跟踪特性。解决方案：磁带在非磁性载体的一个表面上具有非磁性载体和至少一个磁性层，其中磁带的边缘编织量为1μm或更小，差值[Hc < 磁带的最上层的磁性层的长度方向的矫顽力Hc MD 的SB> MD -Hc ，矫顽力Hc TD 的横向为140kA / m以上，Hc MD 以下。版权所有（C）2006，JPO＆NCIPI

83. 发明专利

JP2005310857A Nitride iron base magnetic powder, producing method therefor, and magnetic recording medium 审中-公开
标题翻译：硝酸铁基磁粉，其制造方法和磁记录介质
公开(公告)号：JP2005310857A
公开(公告)日：2005-11-04
申请号：JP2004122509
申请日：2004-04-19
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： USUKI NAOKI , SASAKI YUJI , MATSUO KAZUKI , KISHIMOTO MIKIO
IPC分类号： C01G49/00 , G11B5/706 , G11B5/714 , G11B5/842 , H01F1/047 , H01F1/06
摘要： PROBLEM TO BE SOLVED: To produce a magnetic powder which has small sized particles, a very high coercive force, saturation magnetization most suitable for high-density recording, and moreover is superior in preserving stability. SOLUTION: A nitride iron base magnetic powder is produced by applying surface cladding treatment of a predetermined element to the material particles that comprises iron base oxide or hydroxide, using a stirring apparatus, and then by applying reduction treatment and nitrogen treatment. The stirring apparatus has stirring units, which are attached to the front end of two opposite rotary axes from both the upward and downward directions, and controls the number of rotations of both rotation axes. In the nitride iron base magnetic powder produced, at least iron and nitrogen are the constituent elements, at least one element among aluminum, silicon or rare-earth element is contained; at least an Fe 16 N 2 phase is contained, the content of nitrogen to iron is 1.0-20.0 atom%, the particle is particulate or ellipsoidal in shape having an average particle size within the scope of 5-30 nm; and the saturation magnetization reduction rate, after being preserved under an atmosphere of 60°C, 90%RH for 168 hours, is 5-15%. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了制备具有小尺寸颗粒的磁粉，具有非常高的矫顽力，最适合于高密度记录的饱和磁化强度，并且还具有优异的保存稳定性。解决方案：通过使用搅拌装置对包含铁基氧化物或氢氧化物的材料颗粒施加预定元素的表面包覆处理，然后进行还原处理和氮处理来制造氮化物铁基磁性粉末。搅拌装置具有从两个上下方向安装在两个相反的旋转轴的前端的搅拌单元，并且控制两个旋转轴的旋转数。在所生产的氮化铁铁基磁性粉末中，至少铁和氮为构成元素，含有铝，硅或稀土元素中的至少一种元素; 至少含有Fe 16 N 2 相，氮与铁的含量为1.0-20.0原子％，颗粒状或椭球形具有平均颗粒尺寸在5-30nm范围内; 在60℃，90％RH的气氛中保存168小时后的饱和磁化强度降低率为5〜15％。版权所有（C）2006，JPO＆NCIPI

84. 发明专利

JP2005265654A Compounded particles 审中-公开
标题翻译：复合颗粒
公开(公告)号：JP2005265654A
公开(公告)日：2005-09-29
申请号：JP2004079391
申请日：2004-03-19
申请人： Hitachi Maxell Ltd , Toyobo Co Ltd , 日立マクセル株式会社 , 東洋紡績株式会社
发明人： TSUBOI SATOKO , KISHIMOTO MIKIO , KONO KENJI , NISHIYA YOSHIAKI , KUSUMOTO MASAHIRO
IPC分类号： C01G49/00 , C01G49/08 , C09B67/08 , C09K11/00 , C09K11/77 , G01N33/533 , G01N33/543 , G01N33/552 , G01N33/553 , G01N33/58
CPC分类号： C09K11/7706 , C01G49/009 , C01P2004/03 , C01P2004/62 , C01P2006/42 , C01P2006/60 , C09K11/06 , G01N33/5434 , G01N33/582 , Y10T428/2982 , Y10T428/2991 , Y10T428/2993
摘要： PROBLEM TO BE SOLVED: To provide compounded particles having magnetism and emitting fluorescences with various wavelengths at the same time. SOLUTION: The compounded particles are composed of ferromagnetic iron oxide particles, a fluorescent pigment particles and silica and the average particle size thereof is 1-10 μm. The coersive force thereof is 2.39-11.94 kA/m (30-150 oersted) and saturated magnitization is 0.5-40A m 2 /kg (0.5-40 emu/g) and the peack value of fluorescence emitting wavelength excited by light with a wavelength of 250-600 nm is 350-750 nm. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有磁性的复合颗粒并同时发射各种波长的荧光。解决方案：复合颗粒由铁磁性氧化铁颗粒，荧光颜料颗粒和二氧化硅组成，其平均粒径为1-10μm。其强度为2.39-11.94 kA / m（30-150 oersted），饱和放大倍率为0.5-40A m SP / 2（kg / kg）（0.5-40 emu / g），荧光发射峰值波长为250〜600nm的光激发的波长为350〜750nm。版权所有（C）2005，JPO＆NCIPI

85. 发明专利

JP2005160378A Magnetic composite particle and method for producing the same 审中-公开
标题翻译：磁性复合颗粒及其制造方法
公开(公告)号：JP2005160378A
公开(公告)日：2005-06-23
申请号：JP2003402972
申请日：2003-12-02
申请人： Hitachi Maxell Ltd , Toyobo Co Ltd , 日立マクセル株式会社 , 東洋紡績株式会社
发明人： KONO KENJI , TSUBOI SATOKO , KISHIMOTO MIKIO , KUSUMOTO MASAHIRO , NISHIYA YOSHIAKI
IPC分类号： C12N11/14 , C01G49/00 , C01G49/06 , C01G49/08
摘要： PROBLEM TO BE SOLVED: To provide a material enabling a physiologically active substance to be immobilized in high yield and high in the ability to catch the physiologically active substance by magnetism. SOLUTION: The material is magnetic composite particles being such one that the surfaces of ferromagnetic iron oxide particles are provided each with a coating layer formed by crosslinking a polymer having functional groups reactive with a physiologically active substance, wherein the functional groups remain in the coating layer and the proportion of the coating layer to the ferromagnetic iron oxide particles is ≤10 wt.%. Particularly, the coating layer is formed by the crosslinking reaction of the polymer with a compound reactive with at least two of the functional groups in the polymer. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：待解决的问题：提供能够以高产率固定生理活性物质的材料，并且具有高的通过磁力捕获生理活性物质的能力。解决方案：该材料是磁性复合颗粒，其中铁磁性氧化铁颗粒的表面设置有通过交联具有与生理活性物质反应的官能团的聚合物形成的涂层，其中官能团保留在涂层和涂层对铁磁性氧化铁颗粒的比例≤10重量％。特别地，通过聚合物与聚合物中至少两个官能团反应的化合物的交联反应形成涂层。版权所有（C）2005，JPO＆NCIPI

86. 发明专利

JP2004335019A Magnetic recording medium 有权
公开(公告)号：JP2004335019A
公开(公告)日：2004-11-25
申请号：JP2003131850
申请日：2003-05-09
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KISHIMOTO MIKIO , SASAKI YUJI , USUKI NAOKI
IPC分类号： G11B5/70 , G11B5/706 , G11B5/714 , G11B5/716
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which maintains the excellent surface smoothness even in an area where the magnetic layer is thin and which is excellent in reproduction output in a long wavelength region and a short wavelength region.
SOLUTION: This magnetic recording medium is constituted by forming a low coercive force layer which includes magnetic powder and binder and whose coercive force measured in the longitudinal direction is ≤5.9 kA/m and a magnetic layer for recording signals including magnetic powder and the binder in this order on a non-magnetic supporting substrate. The magnetic layer includes substantially sphere-shaped or ellipse-shaped nitrided iron-based magnetic powder which is constituted of iron or transition elements mainly composed of iron and nitrogen as essential elements and which has mean particle diameter of 5 to 50nm and an average axial ratio of 1 to 2, as magnetic powder and the magnetic layer is perpendicularly aligned substantially and, moreover, coercive force measured in a direction vertical to the surface of the magnetic layer is 79.6 to 318.4 kA/m and the square shape measured in a vertical direction is in the range of 0.6 to 0.9 after demagnetizing field correction and the thickness of the layer is≤300 nm.
COPYRIGHT: (C)2005,JPO&NCIPI

87. 发明专利

JP2004273094A Magnetic recording medium 有权
公开(公告)号：JP2004273094A
公开(公告)日：2004-09-30
申请号：JP2003356740
申请日：2003-10-16
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： SASAKI YUJI , KISHIMOTO MIKIO , USUKI NAOKI
IPC分类号： G11B5/714 , G11B5/70 , G11B5/706 , G11B5/712 , G11B5/738
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium wherein a particle size is very small, a very high coercive force is provided, a high output is achieved by using magnetic powder having optimal saturated magnetization for high-density recording, and good short wave recording characteristics are provided. SOLUTION: In the magnetic recording medium having a magnetic layer containing magnetic power and a binder on a nonmagnetic support, the magnetic powder contain at least one selected from a rare earth element and/or silicon, aluminum, and iron and nitrogen as constituting elements and an Fe 16 N 2 phase an average particle size is 5 to 50nm and the particle is substantially spherical or elliptic. COPYRIGHT: (C)2004,JPO&NCIPI

88. 发明专利

JP2004031792A Magnetic carrier for binding nucleic acid and its manufacturing method 有权
公开(公告)号：JP2004031792A
公开(公告)日：2004-01-29
申请号：JP2002188140
申请日：2002-06-27
申请人： Hitachi Maxell Ltd , Toyobo Co Ltd , 日立マクセル株式会社 , 東洋紡績株式会社
发明人： KISHIMOTO MIKIO , NISHIYA YOSHIAKI
IPC分类号： C12N15/09 , C01G49/00 , C01G49/06 , C01G49/08 , H01F1/11
摘要： PROBLEM TO BE SOLVED: To provide a magnetic carrier for binding a nucleic acid which has a superior nucleic acid binding property and a superior collection property by a magnetic field and excels in dispersion and in elution of a bound nucleic acid in a state wherein a magnetic field is removed, and thereby improves an isolating and refining efficiency for a nucleic acid. SOLUTION: The magnetic carrier for binding a nucleic acid is a globular or granular ferromagnetic iron oxide grain coated with silica. A quantity of silica coating is 3-100 wt.% of the ferromagnetic iron oxide grain, an average grain diameter is 0.1-0.5 μm, coercive force is 2.39-11.94 kA/m (30-150 oersted), and saturation magnetization is 30-80 A×m 2 /kg (30-80 emu/g). COPYRIGHT: (C)2004,JPO

89. 发明专利

JP2003272123A Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：JP2003272123A
公开(公告)日：2003-09-26
申请号：JP2002067871
申请日：2002-03-13
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： SASAKI YUJI , KISHIMOTO MIKIO , TSUBOI SATOKO , WATANABE HIDEAKI
IPC分类号： G11B5/70 , G11B5/706 , G11B5/714
摘要： PROBLEM TO BE SOLVED: To obtain a magnetic recording medium which is obtained by using the rare earth-transition metal based granular magnetic powder and has higher output and excellent short wavelength recording characteristics by specifying an orientation structure of a magnetic powder in a magnetic layer.
SOLUTION: The magnetic recording medium having the magnetic layer containing the magnetic powder and a binder on a non-magnetic substrate is characterized in that the magnetic powder contains a rare earth-transition metal based granular powder containing a transition metal element and a rare earth element and having 5 to 100 nm average particle size, the magnetic layer has ≤300 nm thickness, the ratio of the coercive force in the longitudinal direction to that in the lateral direction is ≥1.20 and the ratio of the squareness ratio in the longitudinal direction to that in the lateral direction is ≥1.9.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题为了获得通过使用稀土过渡金属基颗粒状磁粉而获得的磁记录介质，并且具有较高的输出和优异的短波长记录特性，通过指定磁粉的定向结构磁性层。解决方案：在非磁性基板上具有含有磁性粉末和粘结剂的磁性层的磁记录介质的特征在于，磁性粉末含有含有过渡金属元素的稀土类过渡金属类粒状粉末，稀土元素，平均粒径为5〜100nm，磁性层的厚度≤300nm，纵向的矫顽力与横向的矫顽力的比值为≥1.20，矩形比纵向方向为横向方向≥1.9。版权所有（C）2003，JPO

90. 发明专利

JP2003100507A MAGNETIC POWDER 审中-公开
公开(公告)号：JP2003100507A
公开(公告)日：2003-04-04
申请号：JP2001293043
申请日：2001-09-26
申请人： HITACHI MAXELL
发明人： TSUBOI SATOKO , KISHIMOTO MIKIO , SASAKI YUJI , WATANABE HIDEAKI
IPC分类号： G11B5/706 , G11B5/712 , H01F1/20
摘要： PROBLEM TO BE SOLVED: To provide new magnetic powder which is capable of forming a new magnetic recording medium having much more excellent recording/reproducing characteristics than a conventional magnetic recording medium formed of usual magnetic powder. SOLUTION: Magnetic powder is composed of a core formed of a metal alloy mainly composed of iron and cobalt, and an outer part formed of a compound containing rare earth elements and semi-metal, 5 to 100 nm in grain size, and granular or elliptical in shape. Furthermore, the magnetic powder contains silicon and/or aluminum.

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