Process for forming vertical gap in a thin film magnetic transducer
    2.
    发明授权
    Process for forming vertical gap in a thin film magnetic transducer 失效
    在薄膜磁换能器中形成垂直间隙的工艺

    公开(公告)号:US5600880A

    公开(公告)日:1997-02-11

    申请号:US440513

    申请日:1995-05-12

    IPC分类号: G11B5/23 G11B5/31 G11B5/42

    摘要: In the manufacture of a thin-film magnetic head having a vertical gap, auxiliary support is provided at the ends of a gap wall prior to formation of the magnetic poles. In a preferred embodiment, a pit is defined in a substrate and a release layer is deposited on the substrate followed by a layer of alumina. A recess is then etched through the alumina layer to the release layer in the pit. A partial layer of polymer or metal is deposited with a vertical edge across the median of the pit and recess. A layer of nonmagnetic wall material such as silicon oxide is deposited which after etching leaves a wall against the vertical edge of the partial layer. After removal of the partial layer, a vertical wall extends transversely across the recess and pit with the ends of the wall anchored and supported at the recess sidewalls. Alternatively, a pedestal may be provided in the recess to support each end of the wall. The magnetic poles are then formed simultaneously on either side of the wall. Other thin film layers are then deposited in an appropriate sequence of steps to complete the desired vertical gap, horizontal head structure. The substrate is separated from the completed thin film structure by dissolving the release layers.

    摘要翻译: 在具有垂直间隙的薄膜磁头的制造中,在形成磁极之前,在间隙壁的端部设置辅助支撑。 在一个优选实施例中,凹坑被限定在基底中,并且释放层沉积在基底上,随后是一层氧化铝。 然后将凹槽通过氧化铝层蚀刻到凹坑中的释放层。 聚合物或金属的一部分层沉积有跨越凹坑和凹槽中间的垂直边缘。 沉积一层非磁性壁材料,例如氧化硅,其在蚀刻之后离开部分层的垂直边缘的壁。 在去除部分层之后,垂直壁横向延伸穿过凹部和凹坑,壁的端部锚固并支撑在凹陷侧壁处。 或者,可以在凹部中设置基座以支撑壁的每个端部。 然后在壁的任一侧同时形成磁极。 然后以适当的步骤顺序沉积其它薄膜层,以完成所需的垂直间隙,水平头部结构。 通过溶解剥离层将基底与完成的薄膜结构分离。

    3-Metallo substituted naphthalenes
    3.
    发明授权
    3-Metallo substituted naphthalenes 失效
    3-金属取代的萘

    公开(公告)号:US4159993A

    公开(公告)日:1979-07-03

    申请号:US815771

    申请日:1977-07-14

    摘要: 3-Prenyl-substituted menaquinones are made by reacting a 3-metallo-2-alkyl-1,4-di(alkoxy or aralkoxy) naphthalene with a prenyl halide, and then oxidizing the resulting 3-prenyl-2-alkyl-1,4-di(alkoxy or aralkoxy) naphthalene to prepare the corresponding 3-prenyl-substituted menaquinone. The metallo substituent at the 3-position may be Li, Li/Cu, Cu or MgBr. The oxidation is advantageously conducted by the use of argentic oxide.

    摘要翻译: 3-丙烯基取代的甲萘醌通过3-金属-2-烷基-1,4-二(烷氧基或芳烷氧基)萘与异戊基卤反应制备,然后氧化所得的3-异戊基-2-烷基-1- (烷氧基或芳烷氧基)萘制备相应的3-异戊烯基取代的甲萘醌。 3位的金属取代基可以是Li,Li / Cu,Cu或MgBr。 氧化有利地通过使用氧化银进行。

    Waterfast ink for use in ink jet printing
    5.
    发明授权
    Waterfast ink for use in ink jet printing 失效
    用于喷墨印刷的防水油墨

    公开(公告)号:US4155768A

    公开(公告)日:1979-05-22

    申请号:US857629

    申请日:1977-12-05

    IPC分类号: C09D11/16 C09D11/00

    CPC分类号: C09D11/38

    摘要: An ink for use in ink jet printers is provided. The ink contains a water soluble dye, a polyamine containing 6 or fewer nitrogen atoms per molecule, with the ink composition having a pH of 8 or below. The ink has improved waterfastness over an equivalent ink formulation without the polyamine additive.

    摘要翻译: 提供了一种用于喷墨打印机的墨水。 墨水含有水溶性染料,每分子含有6个或更少氮原子的多胺,油墨组合物的pH为8或更低。 与没有多胺添加剂的油墨相比,油墨具有改善的耐水性。

    Process for making 3-prenylated menaquinones and ether intermediates
    6.
    发明授权
    Process for making 3-prenylated menaquinones and ether intermediates 失效
    制备3-异戊烯基甲醛和醚中间体的方法

    公开(公告)号:US3948958A

    公开(公告)日:1976-04-06

    申请号:US565472

    申请日:1975-04-07

    摘要: 3-Prenyl-substituted-2-alkyl menaquinones are made by reacting an alkali metal salt of a 3-alkyl-4-alkoxy or aralkoxy-1-naphthol with a prenyl halide, and oxidizing the resulting 2-prenyl-3-alkyl-4-alkoxy or aralkoxy-1-naphthol to the corresponding 3-prenyl-substituted-2-alkyl menaquinone. There is also disclosed a procedure for making the alkali metal salts involving the preparation of an ether-ester and hydrogenolysis.

    摘要翻译: 3-丙烯基取代的-2-烷基甲基萘醌通过使3-烷基-4-烷氧基或芳烷氧基-1-萘酚的碱金属盐与异戊二烯基卤化物反应,并将所得2-异戊烯基-3-烷基 - 4-烷氧基或芳烷氧基-1-萘酚与相应的3-异戊烯基取代的-2-烷基甲基萘醌。 还公开了制备涉及制备醚 - 酯和氢解的碱金属盐的方法。

    Metallo-substituted naphthalene
    9.
    发明授权
    Metallo-substituted naphthalene 失效
    金属取代萘

    公开(公告)号:US4234746A

    公开(公告)日:1980-11-18

    申请号:US18578

    申请日:1979-03-08

    摘要: 3-Prenyl-substituted menaquinones are made by reacting a 3-metallo-2-alkyl-1,4-di(alkoxy or aralkoxy) naphthalene with a prenyl halide, and then oxidizing the resulting 3-prenyl-2-alkyl-1,4-di(alkoxy or aralkoxy) naphthalene to prepare the corresponding 3-prenyl-substituted menaquinone. The metallo substituent at the 3-position may be Li, Li/Cu, Cu or MgBr. The oxidation is advantageously conducted by the use of argentic oxide.

    摘要翻译: 3-丙烯基取代的甲萘醌通过3-金属-2-烷基-1,4-二(烷氧基或芳烷氧基)萘与异戊基卤反应制备,然后氧化所得的3-异戊基-2-烷基-1- (烷氧基或芳烷氧基)萘制备相应的3-异戊烯基取代的甲萘醌。 3位的金属取代基可以是Li,Li / Cu,Cu或MgBr。 氧化有利地通过使用氧化银进行。