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1. 发明专利

JP2008248238A Manufacturing method of magnetic coating, and magnetic recording medium using the magnetic coating 审中-公开
标题翻译：磁性涂层的制造方法和使用磁性涂层的磁记录介质
公开(公告)号：JP2008248238A
公开(公告)日：2008-10-16
申请号：JP2008054578
申请日：2008-03-05
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： NAKIRI KAZUHIKO , KUZE SADAMU , MITSUHASHI HIROYUKI
IPC分类号： C09D201/00 , B22F1/00 , B22F1/02 , B22F9/00 , C09D5/23 , C09D7/12 , G11B5/712 , G11B5/842
CPC分类号： G11B5/84 , H01F1/0027 , H01F1/083
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a magnetic coating, wherein the surface of a super fine magnetic powder is so treated as to be coated uniformly with a dispersant and a binding agent resin in order to be dispersed finely, and also to provide a magnetic recording medium with excellent electo-magnetic conversion characteristics, by using the magnetic coating prepared by the manufacturing method.
SOLUTION: The method of manufacturing the magnetic coating includes: a surface treatment process to obtain the first composition where a composition containing a magnetic powder, a dispersant and/or a binding resin, and an organic solvent and having at most 40 wt.% content rate of the non solvent component is mixed and stirred under shearing force; and a condensation process to obtain the second composition by condensing the first composition to have at least 80 wt.% content rate of the non solvent component.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题为了提供一种磁性涂层的制造方法，其中将超细磁粉的表面如此处理以均匀地涂布分散剂和粘合剂树脂以便精细地分散，并且通过使用通过制造方法制备的磁性涂层，还提供具有优异的电磁转换特性的磁记录介质。解决方案：制造磁性涂层的方法包括：获得第一组合物的表面处理方法，其中含有磁性粉末，分散剂和/或粘合树脂和有机溶剂的组合物，其具有至多40重量％在剪切力下将非溶剂成分的含量率混合搅拌; 以及缩合方法，以通过将第一组合物冷凝至含有至少80重量％的非溶剂成分的含量来获得第二组合物。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2005001395A Recording material for water-based ink 审中-公开
标题翻译：水性油墨记录材料
公开(公告)号：JP2005001395A
公开(公告)日：2005-01-06
申请号：JP2004230999
申请日：2004-08-06
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KONO KENJI , MITSUHASHI HIROYUKI , ABE TOSHIHIRO , MIYATA ICHIJI
IPC分类号： B41J2/01 , B41M5/00 , B41M5/50 , B41M5/52
摘要： PROBLEM TO BE SOLVED: To provide a recording material for a water-based ink, which can realize recording with no significant ink spreading, high resolution and high image quality and the like by forming a surface layer on a substrate, and to provide a recording material, which can realize recording with further suppressed ink spreading, higher resolution, and good image quality and the like, can realize the removal of a water-based ink record and can be reusable, by forming a crosslinked surface layer on a substrate.
SOLUTION: In this recording material for a water-based ink, a surface layer containing hydroxypropylcellulose as a resin component is provided on a substrate. Alternatively a surface layer containing a crosslinked product of hydroxypropylcellulose as a resin component is provided on a substrate.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种水性油墨的记录材料，其可以通过在基材上形成表面层而实现没有显着的油墨扩散，高分辨率和高图像质量等的记录，以及提供能够进一步抑制油墨扩散，高分辨率和良好图像质量等的实现记录的记录材料可以实现水性油墨记录的去除，并且可以通过在其上形成交联表面层而被重复使用基质。解决方案：在该水性油墨用记录材料中，在基材上设置含有作为树脂成分的羟丙基纤维素的表面层。或者，在基材上设置含有羟丙基纤维素作为树脂成分的交联体的表面层。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2006054020A Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：JP2006054020A
公开(公告)日：2006-02-23
申请号：JP2004236472
申请日：2004-08-16
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： MITSUHASHI HIROYUKI , KOUTO SHIHOKO
IPC分类号： G11B5/70 , G11B5/714 , G11B5/735
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium having excellent electromagnetic transducing characteristics and excellent running durability, and coping with super high density recording having high reliability. SOLUTION: In the magnetic recording medium having a non-magnetic substrate, at least one magnetic layer containing magnetic powders and a binder resin on one surface of the non-magnetic substrate and a back layer on the other surface of the non-magnetic substrate, the magnetic powder of the uppermost magnetic layer has ≤20 nm (preferably COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供具有优异的电磁感应特性和优异的运行耐久性的磁记录介质，并且应对具有高可靠性的超高密度记录。解决方案：在具有非磁性衬底的磁记录介质中，在非磁性衬底的一个表面上含有磁粉和粘合剂树脂的至少一个磁性层和非磁性衬底的另一表面上的背层，磁性基板，最上层的磁性层的磁性粉末的平均粒径≤20nm（优选<15nm），粒状粒子近似。最上层的磁性层的最大突出量Pm为25nm，背面层的最大突出量Pb与最上层磁性层的最大突出量Pm的比Pb / Pm为5〜20。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2005170042A Coating film for easy removal of deposit solidified on surface of article 审中-公开
标题翻译：涂料膜易于去除在物品表面固化的沉积物
公开(公告)号：JP2005170042A
公开(公告)日：2005-06-30
申请号：JP2004343948
申请日：2004-11-29
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KONO KENJI , MITSUHASHI HIROYUKI , NISHIHARA SHOJI , MIYATA ICHIJI
IPC分类号： G03G7/00 , B08B7/04 , B32B27/00 , B32B27/28
摘要： PROBLEM TO BE SOLVED: To provide a coating film for easy removal of deposit solidified on articles, which comprises a film consisting mainly of a resin which is hydrophilic and solid in air at a normal temperature and swelled by water but not flowed out; articles can repeatedly be made clean by fixing the film on the surface of the article.
SOLUTION: The film for removing easily deposit solidified on the surface of articles mainly comprises a resin which is hydrophilic and solid in air at a room temperature and swelled by water but not flowed out.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种容易除去在物品上固化的沉积物的涂膜，其包括主要由在常温下在空气中亲水和固体的树脂组成的膜并且被水膨胀但不流出的膜 ; 通过将薄膜固定在制品的表面上可以使制品重复地进行清洁。解决方案：用于在物品表面固化的容易沉积的膜主要包括在室温下在空气中亲水和固体的树脂，并且被水膨胀但不流出。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2012074093A Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：JP2012074093A
公开(公告)日：2012-04-12
申请号：JP2010216421
申请日：2010-09-28
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： WATANABE TOSHIYUKI , MITSUHASHI HIROYUKI , OWAKI TAKAYUKI , KAWARAI MASAYOSHI
IPC分类号： G11B5/738 , G11B5/702
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which has a non-magnetic supporting body that is comparatively inexpensive and has smoothness coated with a resin layer for smoothing, and indicates an excellent carrier-to-noise (C/N) ratio and error rate.SOLUTION: In the magnetic recording medium, as for smoothness in a magnetic layer side of a non-magnetic supporting body, the number of projections having Ra of 10 nm or more and 15 nm or less and a height of 130 nm or more is 10 pieces/mm2 or less, and as for smoothness in a back layer side thereof, the magnetic recording medium has a resin layer having a thickness of 0.2 μm or more and 0.7 μm or less provided in the magnetic layer side of the non-magnetic supporting body having Ra of 15 nm or more and 25 nm or less and P-0 of 200 nm or more and 300 nm or less.
摘要翻译：要解决的问题：提供一种磁记录介质，该磁记录介质具有比较便宜且具有用于平滑化的树脂层的平滑度的非磁性支撑体，并且表示优异的载波噪声（C / N ）比率和错误率。解决方案：在磁记录介质中，关于非磁性支撑体的磁性层侧的平滑度，Ra为10nm以上且15nm以下，高度为130nm的突起的数量，更优选为10个/ mm 2以下，并且对于其背面侧的平滑度，磁记录介质具有设置在非磁性层的磁性层侧的0.2μm以上且0.7μm以下的厚度的树脂层，磁性支撑体，其具有15nm以上且25nm以下的Ra，200nm以上且300nm以下的P-0。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2012043508A Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：JP2012043508A
公开(公告)日：2012-03-01
申请号：JP2010184881
申请日：2010-08-20
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： MITSUHASHI HIROYUKI , WATANABE TOSHIYUKI , KAWARAI MASAYOSHI
IPC分类号： G11B5/738 , G11B5/735
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium in which the surface of a magnetic layer is smooth, the output of reproducing is larger, and the dimensional stability is also good.SOLUTION: On one principal surface of a non-magnetic supporting body, a magnetic recording medium has a resin layer, an undercoat layer containing non-magnetic powder and a binder on the resin layer, and additionally at least one magnetic layer containing magnetic powder and a binder on the undercoat layer. On the other principal surface thereof, the magnetic recording medium has a back coat layer containing non-magnetic powder and a binder. A resin contained in the resin layer is an alcohol-soluble resin and hardened by crosslinking.
摘要翻译：解决的问题：为了提供磁性层的表面光滑的磁记录介质，再现的输出更大，尺寸稳定性也良好。解决方案：在非磁性支撑体的一个主表面上，磁记录介质在树脂层上具有树脂层，含有非磁性粉末的底涂层和粘结剂，另外还含有至少一个含有磁性粉末和底涂层上的粘合剂。磁记录介质的另一个主表面具有含有非磁性粉末和粘合剂的背涂层。包含在树脂层中的树脂是醇溶性树脂，并通过交联硬化。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2010147079A Method of producing iron nitride-based magnetic powder, and iron nitride-based magnetic powder 审中-公开
标题翻译：生产基于氮化物的磁性粉末和基于硝酸的磁粉的方法
公开(公告)号：JP2010147079A
公开(公告)日：2010-07-01
申请号：JP2008319731
申请日：2008-12-16
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： SASAKI YUJI , MITSUHASHI HIROYUKI , KAWARAI MASAYOSHI
IPC分类号： H01F1/11 , C01B21/06
摘要： PROBLEM TO BE SOLVED: To provide iron nitride-based magnetic powder which prevents particles from being sintered, has a narrow particle size distribution, and is used for a computer backup magnetic tape with high capacity suitable for high-density recording. SOLUTION: The present invention relates to a method of producing iron nitride-based magnetic powder which uses, as a starting raw material, composite particles having portions where a surface of an iron-based oxide phase consisting principally of a ferrite phase is coated with an iron-based hydroxide phase. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供防止颗粒烧结的氮化铁基磁性粉末，具有窄的粒度分布，并且用于适用于高密度记录的高容量的计算机备用磁带。解决方案：本发明涉及一种生产氮化铁基磁性粉末的方法，该方法使用主要由铁素体相组成的铁基氧化物相的表面为具有部分的复合颗粒作为起始原料涂覆有铁基氢氧化物相。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2011096312A Iron nitride magnetic powder and magnetic recording medium using the same 审中-公开
标题翻译：铁氮化物磁粉和磁记录介质
公开(公告)号：JP2011096312A
公开(公告)日：2011-05-12
申请号：JP2009248817
申请日：2009-10-29
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： INOUE TETSUTARO , MITSUHASHI HIROYUKI , SASAKI YUJI , WATANABE TOSHIYUKI
IPC分类号： G11B5/712 , G11B5/706 , G11B5/714
摘要： PROBLEM TO BE SOLVED: To provide a high-density magnetic recording medium which has excellent S/N ratio, when used for a system having a high sensitivity head such as a GMR head. SOLUTION: A granular and ellipsoidal iron nitride magnetic powder includes: a core part containing iron nitride which comprises an Fe 16 N 2 phase as a main phase; an intermediate layer part containing metal iron; and an outer layer part containing iron oxide. In the iron nitride magnetic powder, a mean diameter dn of the core part containing the iron nitride is 6-10 nm, and a mean diameter df of a part including the core part containing the iron nitride and the intermediate layer part containing the metal iron is 7-14 nm. The magnetic recording medium having a nonmagnetic support and a magnetic layer which contains at least iron nitride magnetic powder and binder on the support, has excellent SNR even if applied to a magnetic recording and reproducing system which has a high sensitivity head, such as the GMR head. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有优异的S / N比的高密度磁记录介质，当用于具有高灵敏度头的系统如GMR头时。解决方案：粒状和椭圆形的氮化铁磁粉包括：包含以铁为主要成分的含铁的氮化铁的核心部分，所述氮化铁包含作为主相的Fe 16 N 2 相。含有金属铁的中间层部分; 和含有氧化铁的外层部分。在氮化铁磁性粉末中，含有氮化铁的芯部的平均直径dn为6-10nm，包含含有铁素体的芯部和含有金属铁的中间层部的部分的平均直径df 是7-14nm。具有非磁性载体的磁记录介质和至少在载体上至少含有铁磁性粉末和粘合剂的磁性层，即使应用于具有高灵敏度磁头的磁记录和再现系统，例如GMR，也具有优异的SNR 头。版权所有（C）2011，JPO＆INPIT

9. 发明专利

JP2010248285A Method for producing magnetic paint 有权
标题翻译：生产磁性涂料的方法
公开(公告)号：JP2010248285A
公开(公告)日：2010-11-04
申请号：JP2009096049
申请日：2009-04-10
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： MITSUHASHI HIROYUKI , KUZE SADAMU
IPC分类号： C09D7/14 , C09D5/23 , C09D7/12 , G11B5/842
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a magnetic paint excellent in dispersibility and chargeability, wherein the kneading process in a process of producing a magnetic paint is improved. SOLUTION: The method for producing a magnetic paint containing a magnetic powder, a binder resin, and a solvent is characterized in that the kneading process of kneading a composition to be kneaded containing a specified amount of the binder resin and a specified amount of the solvent based on the magnetic powder at high solid concentration includes a first kneading process of performing kneading in an amount of first resin, which is 20-80% of the specified amount of the binder resin, and a plurality of kneading processes including a second kneading process and processes thereafter, after the first kneading process, the kneading process is performed, and, the plurality of kneading processes including the second kneading process and the processes thereafter are performed using the amount of the remaining resin obtained by subtracting the amount of the first resin from the specified amount of the binder resin in the plurality of kneading processes including the second kneading process and the processes thereafter. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题：提供一种分散性和带电性优异的磁性涂料的制造方法，其中提高了磁性涂料的制造工序中的捏合工序。解决方案：含有磁性粉末，粘合剂树脂和溶剂的磁性涂料的制造方法的特征在于，捏合含有规定量的粘合剂树脂的捏合组合物和规定量的捏合方法基于高固体浓度的磁性粉末的溶剂的溶剂包括以规定量的粘合剂树脂的20-80％进行第一树脂的捏合的第一捏和过程，以及包括第二捏合工序及其后的工序，在第一捏合工序之后进行混炼工序，使用剩余树脂的量，通过减去第二捏合工序和在包括第二捏合过程的多次捏合过程中，从指定量的粘合剂树脂获得第一树脂以及其后的处理。版权所有（C）2011，JPO＆INPIT

10. 发明专利

JP2009283059A Evaluation method of magnetic coating 审中-公开
标题翻译：磁性涂层评估方法
公开(公告)号：JP2009283059A
公开(公告)日：2009-12-03
申请号：JP2008133373
申请日：2008-05-21
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： MITSUHASHI HIROYUKI , KUZE SADAMU
IPC分类号： G11B5/84 , C09D5/23 , C09D7/12 , C09D201/00 , G11B5/714 , G11B5/842
摘要： PROBLEM TO BE SOLVED: To provide an evaluating method of magnetic coating, by which a degree of packing of magnetic powders in the coating is evaluated simply, and to provide a magnetic layer with the high degree of packing of magnetic powders is formed.
SOLUTION: The evaluating method of the magnetic coating including magnetic powders is such that it comprises: a solidifying step of solidifying the magnetic coating, without causing the magnetic powders to orient in a specified direction and to obtain a solidified magnetic coating; and a coercive force measuring step of measuring the coercive force of the solidified magnetic coating, and the dispersibility of the magnetic coating is evaluated, based on the obtained coercive force.
COPYRIGHT: (C)2010,JPO&INPIT

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