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    • 1. 发明授权
    • Print element arrangement in serial matrix printer
    • 串行矩阵打印机中的打印元件布置
    • US5190382A
    • 1993-03-02
    • US602527
    • 1990-10-24
    • Osamu KoshiishiTakashi AsadaKiyofumi KoikeMasaki Shimomura
    • Osamu KoshiishiTakashi AsadaKiyofumi KoikeMasaki Shimomura
    • B41J2/255B41J2/01B41J2/235B41J2/505
    • B41J2/5056
    • A serial printer having a dot type printing head for printing on a paper. The printer includes 2N columns of dot forming elements where N is a positive integer equal to 2 or more and a carriage supported on the printer for reciprocal movement across the paper in a carriage direction. The columns of dot forming elements are supported on the carriage for selectively printing dots on a paper. Each column of the dot forming elements is spaced a predetermined distance from adjacent columns of the dot forming elements in the carriage direction. Each dot forming element column includes a plurality of dot forming elements arranged in a line and spaced apart from one another in the column direction by a dot pitch substantially equal to N. A drive system selectively drives selected dot forming elements in each column of dot forming elements by one of an even number timing and an odd number timing. Each column of dot forming elements driven by an even number timing is shifted in the column direction by one dot with respect to each other column of dot forming elements driven by an even number timing. Each column of dot forming elements driven by an odd number timing is shifted in a column direction by one dot with respect to each other column of dot forming elements driven by an odd number timing. Each column of dot forming elements driven by an even number timing is shifted in the column direction by less than about 1/3 dot pitch with respect to at least one column of dot forming elements driven by an even number timing.
    • 2. 发明授权
    • Wire dot print head and method for manufacturing same
    • 丝印打印头及其制造方法
    • US5281037A
    • 1994-01-25
    • US886698
    • 1992-05-20
    • Takashi AsadaOsamu KoshiishiYasuhiko NakazawaMasaki Shimomura
    • Takashi AsadaOsamu KoshiishiYasuhiko NakazawaMasaki Shimomura
    • B41J2/235B41J2/275
    • B41J2/235
    • An improved wire dot print head for increased integrated density is provided. The wire dot print head includes a frame. A plurality of drive coils are mounted within the frame. A lever for driving print wires has a print wire mounted at one end and its other end formed as a hook to act as a rotation support member. A yoke has salients formed thereon equal in number to that of the levers disposed on its end surface. The rotation support member of each lever is retained with a recess formed within a respective yoke and an end surface of the frame and is affixed in place by a retainer spring. When an excitement current flows through the coil, the lever is caused to move so that the print wires rotate about the rotation support member causing the print wires to strike a platen.
    • 提供了一种用于提高集成密度的改进的线点打印头。 线点打印头包括框架。 多个驱动线圈安装在框架内。 用于驱动印刷线的杆具有安装在一端的打印线,并且其另一端形成为钩以用作旋转支撑构件。 轭具有形成在其上的与其设置在其端面上的杆的数量相等的数量。 每个杠杆的旋转支撑构件保持有形成在相应的轭和框架的端面内的凹部,并通过保持弹簧固定就位。 当兴奋电流流过线圈时,使杆移动,使得打印线围绕旋转支撑构件旋转,导致打印线撞击压板。
    • 5. 发明授权
    • Wire dot print head with rotating lever
    • 带旋转杆的丝印打印头
    • US5368401A
    • 1994-11-29
    • US93913
    • 1993-07-20
    • Takashi AsadaOsamu KoshiishiYasuhiko NakazawaMasaki Shimomura
    • Takashi AsadaOsamu KoshiishiYasuhiko NakazawaMasaki Shimomura
    • B41J2/235B41J2/27
    • B41J2/235
    • An improved wire dot print head for increased integrated density is provided. The wire dot print head includes a frame. A plurality of drive coils are mounted within the frame. A lever for driving print wires has a print wire mounted at one end and its other end formed as a hook to act as a rotation support member. A yoke has salients formed thereon equal in number to that of the levers disposed on its end surface. The rotation support member of each lever is retained with a recess formed within a respective yoke and an end surface of the frame and is affixed in place by a retainer spring. When an excitement current flows through the coil, the lever is caused to move so that the print wires rotate about the rotation support member causing the print wires to strike a platen.
    • 提供了一种用于提高集成密度的改进的线点打印头。 线点打印头包括框架。 多个驱动线圈安装在框架内。 用于驱动印刷线的杆具有安装在一端的打印线,并且其另一端形成为钩以用作旋转支撑构件。 轭具有形成在其上的与其设置在其端面上的杆的数量相等的数量。 每个杠杆的旋转支撑构件保持有形成在相应的轭和框架的端面内的凹部,并通过保持弹簧固定就位。 当兴奋电流流过线圈时,使杆移动,使得打印线围绕旋转支撑构件旋转,导致打印线撞击压板。