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    • 34. 发明授权
    • Spark plug
    • 火花塞
    • US07109645B2
    • 2006-09-19
    • US11002443
    • 2004-12-03
    • Hirofumi SuzukiSeiji Amakusa
    • Hirofumi SuzukiSeiji Amakusa
    • H01T13/00
    • C23C28/3225C23C22/53C23C28/345C23C2222/10H01T13/08
    • A spark plug includes a metallic housing, an insulator fixed in the metallic housing, a center electrode fixed in the insulator, a ground electrode opposed to the center electrode via a spark discharge gap, and a protective coat formed on the surfaces of a metallic housing and a gasket. The protective coat includes a galvanized film formed on the surfaces of the metallic housing and the gasket and a chromate film successively laminated on the galvanized film. The chromate film is hexavalent chromium-free and contains trivalent chromium as a major component. The chromate film has a film thickness not smaller than 0.05 μm and not greater than 0.18 μm, and the chromate film contains a metallic component which is robust against oxidation compared with zinc. Furthermore, the chromate film has a film hardness equal to or less than 1 GPa in the temperature range from a room temperature to 180° C.
    • 火花塞包括金属壳体,固定在金属壳体中的绝缘体,固定在绝缘体中的中心电极,经由火花放电间隙与中心电极相对的接地电极,以及形成在金属壳体的表面上的保护涂层 和垫圈。 保护层包括在金属壳体和垫圈的表面上形成的镀锌膜和依次层压在镀锌膜上的铬酸盐膜。 铬酸盐膜是六价铬,含有三价铬作为主要成分。 铬酸盐膜的膜厚不小于0.05μm,不大于0.18μm,并且铬酸盐膜含有与锌相比耐氧化的金属成分。 此外,铬酸盐膜在室温至180℃的温度范围内具有等于或小于1GPa的膜硬度。
    • 37. 发明授权
    • Printing head using staggered arrangement needles
    • 打印头使用标准布置针
    • US5133613A
    • 1992-07-28
    • US570467
    • 1990-08-21
    • Tsutomu IkehataHirofumi SuzukiKatsuya MasudaMakoto YasunagaYoshimasa Tai
    • Tsutomu IkehataHirofumi SuzukiKatsuya MasudaMakoto YasunagaYoshimasa Tai
    • B41J2/275B41J2/235B41J2/30
    • B41J2/235B41J2/30
    • A printing head includes solenoids arranged in an annular array for driving needles which are arranged in a zigzag array of two vertical columns. Solenoids corresponding to needles forming one of the columns are arranged on a semicircle of the annular array in the same order as that of the needles on the needle column. Two solenoids respectively corresponding to needles disposed at lower ends of the two needle columns are designed to generate magnetic fluxes whose directions are the same. During underline printing where these two solenoids are alternately energized, the magnetic flux generated by one of the solenoids never acts to increase an effective magnetic flux of the other solenoid at an initial stage of the excitation period thereof, so that the needle of the first solenoid reaches its forwardmost position at an appropriate time. The needle is rapidly restored and its tip prevented from being caught by the ink ribbon. After the forwardmost position is reached by the needle associated with the first solenoid, the magnetic flux generated by the second solenoid never acts to increase the magnetic flux of the first, permitting rapid restoration of the needle.
    • 打印头包括布置成环形阵列的螺线管,用于驱动针布置成两个垂直列的之字形阵列。 对应于形成一个柱的针的螺线管以与针柱上的针的顺序相同的顺序布置在环形阵列的半圆上。 分别对应于设置在两个针列的下端的针的两个螺线管被设计成产生方向相同的磁通量。 在这两个螺线管交替通电的下划线打印期间,其中一个螺线管产生的磁通量在其激励周期的初始阶段从不会增加另一个螺线管的有效磁通,使得第一螺线管 在适当的时候到达最前面的位置。 针快速恢复,其尖端防止被墨带卡住。 在与第一螺线管相关联的针到达最前面的位置之后,由第二螺线管产生的磁通不会增加第一螺线管的磁通量,从而允许针的快速恢复。