公开(公告)号：US4521480A

公开(公告)日：1985-06-04

申请号：US521578

申请日：1983-08-09

申请人： Kuniharu Fujiki

发明人： Kuniharu Fujiki

IPC分类号： C09D5/23 ,  C09D7/12 ,  G11B5/708 ,  B32B5/16

CPC分类号： G11B5/708 ,  Y10S428/90 ,  Y10T428/256

摘要： A magnetic recording medium of the high recording density type is disclosed, which comprises a support, and a magnetic recording layer formed on at least one side of the support. The magnetic recording layer is made of a dispersion, in a binder, of magnetic alloy particles and TiO particles in an amount of from 0.1 to 20 wt % of said magnetic alloy particles.

摘要翻译： 公开了一种记录密度高的磁记录介质，其包括支撑体和形成在载体的至少一侧的磁记录层。 磁记录层由粘合剂中的磁性合金颗粒和TiO颗粒的分散体制成，其量为所述磁性合金颗粒的0.1至20重量％。

公开(公告)号：US4501800A

公开(公告)日：1985-02-26

申请号：US517714

申请日：1983-07-27

申请人： Kuniharu Fujiki ,  Shigeru Hashimoto

发明人： Kuniharu Fujiki ,  Shigeru Hashimoto

IPC分类号： G11B5/708 ,  C09D5/23 ,  C09D7/12 ,  G11B5/71 ,  G11B5/68 ,  G11B5/70 ,  G11B5/72

CPC分类号： G11B5/71 ,  Y10S428/90 ,  Y10T428/31663

摘要： Magnetic recording media are described which comprise a support having a magnetic recording layer thereon. The magnetic recording layer is made of a dispersion of magnetic particles in a binder and a specific type of organosilicone. The organosilicone is represented by the general formula ##STR1## in which R represents a monovalent saturated or unsaturated hydrocarbon having 7 to 21 carbon atoms, R.sub.1, R.sub.2 and R.sub.3 independently represent a methyl or RCOO group, R.sub.4 is a saturated hydrocarbon group having 1 to 20 carbon atoms, and k, l, m and n are independently an integer provided that 1

摘要翻译： 描述了包括其上具有磁记录层的支撑体的磁记录介质。 磁记录层由磁性颗粒在粘合剂和特定类型的有机硅氧烷中的分散体制成。 有机硅氧烷由通式 + TR 表示，其中R表示具有7至21个碳原子的一价饱和或不饱和烃，R 1，R 2和R 3独立地表示甲基或RCOO基，R 4是饱和的 具有1至20个碳原子的烃基，并且k，l，m和n独立地是整数，条件是1

公开(公告)号：US4383000A

公开(公告)日：1983-05-10

申请号：US223087

申请日：1981-01-07

申请人： Kuniharu Fujiki

发明人： Kuniharu Fujiki

IPC分类号： G11B5/708 ,  C09D5/23 ,  C09D7/12 ,  G11B5/71 ,  B32B27/30

CPC分类号： G11B5/71 ,  Y10S428/90 ,  Y10T428/31935

摘要： A magnetic recording medium which comprises a support and a magnetic layer formed on the support which is comprised of a magnetic powder dispersed in a binder and containing a lubricant. The lubricant contains at least as ester of a linear aliphatic acid having 14-18 carbon atoms and an alcohol of the general formula, (CH.sub.3).sub.2 CH--(CH.sub.2).sub.n --OH in which n is an integer of from 1 to 5. Preferably, an ester of a linear aliphatic acid having 14-18 carbon atoms and an alcohol of the formula, CH.sub.3 --(CH.sub.2).sub.m --CH.sub.2 OH, in which m is an integer of from 2 to 4 is contained.

摘要翻译： 一种磁记录介质，包括支撑体和形成在载体上的磁性层，该磁性层由分散在粘合剂中并含有润滑剂的磁性粉末构成。 润滑剂至少含有具有14-18个碳原子的直链脂肪酸和通式为（CH 3）2 CH-（CH 2）n -OH的醇，其中n为1至5的整数。优选地， ，含有14-18个碳原子的直链脂肪酸和下式的CH 3 - （CH 2）m -CH 2 OH的醇的酯，其中m是2至4的整数。

公开(公告)号：US06861126B2

公开(公告)日：2005-03-01

申请号：US10360446

申请日：2003-02-06

申请人： Kuniharu Fujiki

发明人： Kuniharu Fujiki

IPC分类号： G11B5/66 ,  G11B5/64 ,  G11B5/65

CPC分类号： G11B5/64 ,  Y10T428/24942 ,  Y10T428/31

摘要： On a polymeric substrate 1, there is formed with a single magnetic layer 2 containing a ferromagnetic metal and oxygen. The magnetic layer 2 is divided into three regions equally in the depth direction from the polymeric substrate 1 to the surface of the magnetic layer 2, wherein the three regions are defined as a first region 21, a second region 22 and a third region 23 respectively in accordance with a process of forming the magnetic layer 2. With defining that a maximum value of oxygen concentration in the first region 21 is “Max 1”, a minimum value of oxygen concentration in the second region 22 is “Min 2”, and a maximum value of oxygen concentration in the third region 23 is “Max 3” respectively, these values “Max 1”, “Min 2” and “Max 3” have relations of “Min 2”

摘要翻译： 在聚合物基材1上形成有包含铁磁金属和氧的单个磁性层2。 磁性层2从聚合物基板1到磁性层2的表面在深度方向上分为三个区域，其中三个区域分别被定义为第一区域21，第二区域22和第三区域23 根据形成磁性层2的过程，通过限定第一区域21中的氧浓度的最大值为“Max 1”，第二区域22中的氧浓度的最小值为“Min2”，并且 第三区域23中的氧浓度的最大值分别为“Max 3”，这些值“Max 1”，“Min 2”，“Max 3”的关系为“Min2”<“MAX1”，“Min2” <=“MAX3”<=“MAX1”。

公开(公告)号：US4634627A

公开(公告)日：1987-01-06

申请号：US796521

申请日：1985-11-08

申请人： Kuniharu Fujiki ,  Hiroshi Togashi

发明人： Kuniharu Fujiki ,  Hiroshi Togashi

IPC分类号： C09D5/23 ,  C09D7/12 ,  G11B5/708 ,  G11B3/70

CPC分类号： G11B5/7085 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/2998 ,  Y10T428/31609

摘要： A magnetic recording medium comprising a nonmagnetic support, and a magnetic recording layer formed on said support. The magnetic recording layer comprises a magnetic powder and an abrasive powder dispersed in a resin binder. The abrasive powder has a coating of an isocyanate compound having at least two isocyanate groups in one molecule thereof and is used in an amount of from 0.5 to 20 parts by weight per 100 parts by weight of the magnetic powder.

摘要翻译： 包括非磁性载体的磁记录介质和形成在所述载体上的磁记录层。 磁记录层包括分散在树脂粘合剂中的磁性粉末和磨料粉末。 磨料粉末在其一分子中具有至少两个异氰酸酯基团的异氰酸酯化合物的涂层，其用量为每100重量份磁性粉末0.5至20重量份。

公开(公告)号：US4383001A

公开(公告)日：1983-05-10

申请号：US223088

申请日：1981-01-07

申请人： Kuniharu Fujiki

发明人： Kuniharu Fujiki

IPC分类号： C09D5/23 ,  C10M105/24 ,  C10N40/18 ,  C10N50/08 ,  G11B5/71 ,  B32B27/30

CPC分类号： G11B5/71 ,  Y10S428/90 ,  Y10T428/31935

摘要： A magnetic recording medium which comprises a support and a magnetic layer formed on the support and comprised of a magnetic powder dispersed in a binder and also of a lubricant. The lubricant contains at least an ester of a linear aliphatic acid having 14-18 carbon atoms and an alcohol of the general formula, ##STR1## in which R and R' are independently a linear alkyl group having 5-10 carbon atoms. Preferably, an ester of a linear aliphatic acid having 14-18 carbon atoms and a linear or branched alcohol having 4-8 carbon atoms are also contained in the magnetic recording medium.

摘要翻译： 一种磁记录介质，包括支撑体和形成在载体上的磁性层，并由分散在粘合剂中的磁粉和润滑剂构成。 润滑剂至少含有具有14-18个碳原子的直链脂族酸和通式为“IMAGE”的醇，其中R和R'独立地为具有5-10个碳原子的直链烷基。 优选地，具有14-18个碳原子的直链脂族酸和具有4-8个碳原子的直链或支链醇的酯也包含在磁记录介质中。

公开(公告)号：US6093486A

公开(公告)日：2000-07-25

申请号：US183411

申请日：1998-10-30

申请人： Kazuhiro Takeda ,  Kuniharu Fujiki

发明人： Kazuhiro Takeda ,  Kuniharu Fujiki

IPC分类号： G11B5/708

CPC分类号： G11B5/7085 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/257

摘要： Magnetic paint for producing a magnetic recording medium, the magnetic paint comprises at least ferromagnetic powder, binder, .alpha.-Fe.sub.2 O.sub.3 powder, and alumina powder. A relationship between an additive amount (A) of the .alpha.-Fe.sub.2 O.sub.3 powder and an additive amount (B) of the alumina powder is 5.ltoreq.(A+B).ltoreq.25 weight-parts referred to 100 weight-parts of the ferromagnetic powder and 1.ltoreq.A/B.ltoreq.9. The binder comprises polyurethane resin containing metal base sulfonic acid and tertiary amine as major ingredients.

摘要翻译： 用于制造磁记录介质的磁性涂料，所述磁性涂料至少包含铁磁性粉末，粘合剂，α-Fe2O3粉末和氧化铝粉末。 α-Fe 2 O 3粉末的添加量（A）与氧化铝粉末的添加量（B）之间的关系为5重量份，相对于100重量份 铁磁粉末和1 / A / B 9。 粘合剂包含含有金属基磺酸和叔胺作为主要成分的聚氨酯树脂。

公开(公告)号：US4759980A

公开(公告)日：1988-07-26

申请号：US017257

申请日：1987-02-12

申请人： Ikuo Matsumoto ,  Kuniharu Fujiki ,  Satoshi Sekiya

发明人： Ikuo Matsumoto ,  Kuniharu Fujiki ,  Satoshi Sekiya

IPC分类号： G11B5/708 ,  C09D5/23 ,  C09D167/00 ,  G11B5/702

CPC分类号： G11B5/7023 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/265 ,  Y10T428/31786

摘要： A magnetic recording medium comprising a non-magnetic support and a magnetic recording layer formed on at least one side of the support. The layer is made of a composition which comprises two types of polyesters as a binder. The polyesters have glass transition temperatures of not lower than 50.degree. C. and not higher than 10.degree. C., respectively.

摘要翻译： 一种磁记录介质，包括形成在所述载体的至少一侧上的非磁性载体和磁记录层。 该层由包含两种类型的聚酯作为粘合剂的组合物制成。 聚酯的玻璃化转变温度分别不低于50℃且不高于10℃。

公开(公告)号：US4708906A

公开(公告)日：1987-11-24

申请号：US724288

申请日：1985-04-17

申请人： Satoshi Sekiya ,  Ikuo Matsumoto ,  Kuniharu Fujiki

发明人： Satoshi Sekiya ,  Ikuo Matsumoto ,  Kuniharu Fujiki

IPC分类号： G11B5/73 ,  G11B5/68

CPC分类号： G11B5/7305 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/31551 ,  Y10T428/31565

摘要： A magnetic recording medium comprising a non-magnetic support and a magnetic recording layer formed on the support through an undercoat layer. The undercoat layer is made of a combination of a thermosetting polyurethane resin, carbon black and an ammonium salt of a phosphoric ester of the following formula ##STR1## in which each R.sub.1, each R.sub.2 and R.sub.3 independently represent an alkyl group having from 1 to 18 carbon atoms, alkoxy group having from 1 to 4 carbon atoms, an or phenyl group. Preferably, in the formula, each R.sub.1 represents CH.sub.3, each R.sub.2 represents an alkyl group having from 1 to 14 carbon atoms, and R.sub.3 represents --OCH.sub.3 or a phenyl radical. The undercoat layer may further comprise a thermosetting polyester resin so as to improve adhesiveness.

摘要翻译： 一种磁记录介质，包括通过底涂层形成在载体上的非磁性载体和磁记录层。 底涂层由热固性聚氨酯树脂，炭黑和下式“IMAGE”的磷酸酯的铵盐的组合制成，其中每个R 1，每个R 2和R 3独立地表示具有1至18个碳原子的烷基 碳原子，具有1至4个碳原子的烷氧基，或苯基。 优选地，在该式中，每个R 1表示CH 3，每个R 2表示具有1至14个碳原子的烷基，R 3表示-OCH 3或苯基。 底涂层还可以包含热固性聚酯树脂，以提高粘合性。

公开(公告)号：US4699817A

公开(公告)日：1987-10-13

申请号：US856787

申请日：1986-04-28

申请人： Kuniharu Fujiki ,  Ikuo Matsumoto

发明人： Kuniharu Fujiki ,  Ikuo Matsumoto

IPC分类号： C09D5/23 ,  C09D167/00 ,  C09D175/00 ,  C09D175/04 ,  C10M105/24 ,  C10N40/18 ,  G11B5/702 ,  G11B5/71

CPC分类号： G11B5/71 ,  G11B5/7022 ,  Y10S428/90 ,  Y10T428/31609 ,  Y10T428/31786

摘要： Magnetic recording mediums comprising a nonmagnetic substrate and a magnetic recording layer formed on at least one side of the substrate. The magnetic recording layer is made of a composition which comprises magnetic particles dispersed in a combination of polyester and polyurethane resins and oleic acid, so that the magnetic medium is significantly improved in durability and lubricating property.

摘要翻译： 磁性记录介质包括形成在基板的至少一侧上的非磁性基底和磁记录层。 磁记录层由包含分散在聚酯树脂和聚氨酯树脂和油酸的组合中的磁性颗粒的组合物制成，使得磁性介质的耐久性和润滑性显着提高。