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    • 1. 发明授权
    • Printing hammer driving apparatus
    • 打印锤驱动装置
    • US4392423A
    • 1983-07-12
    • US153318
    • 1980-05-27
    • Isao NakajimaKoji TagusariKenji OkunaToru HayamaKazue TakahashiMichihiro WatanabeSumihisa Kotani
    • Isao NakajimaKoji TagusariKenji OkunaToru HayamaKazue TakahashiMichihiro WatanabeSumihisa Kotani
    • B41J9/38B41J9/02
    • B41J9/38
    • A printing hammer driving apparatus for high-speed printers comprises a lever member acting as a hammer operating part, an armature forming a part of a magnetic circuit, and an electromagnet forming, together with the armature, the magnetic circuit. The lever member has a rotational supporting point at the base end thereof and is made of a light-weight non-magnetic material. The armature is projected in one of the rotational directions of the lever member from the intermediate part of the lever member. The electromagnet has at least one core and an exciting coil wound on the core. A core has a magnetic pole face perpendicular to the direction of attraction of the armature and a magnetic pole face parallel to the direction of attraction of the armature. The magnetic pole face perpendicular to the direction of armature attraction is opposed with a gap to the forward end face of the armature, and the magnetic pole face parallel to the direction of armature attraction is opposed with a gap to the surface of the armatures parallel to the direction of attraction thereof.
    • 用于高速打印机的打印锤驱动装置包括作为锤操作部件的杠杆构件,形成磁路的一部分的电枢以及与衔铁一起形成磁路的电磁体。 杠杆构件在其基端具有旋转支撑点,并且由轻质非磁性材料制成。 电枢从杠杆构件的中间部分突出在杠杆构件的旋转方向之一上。 电磁铁具有至少一个铁芯和缠绕在铁芯上的励磁线圈。 芯具有垂直于电枢吸引方向的磁极面和平行于电枢吸引方向的磁极面。 与电枢吸引方向垂直的磁极面与电枢的前端面相对,与电枢吸引方向平行的磁极面与与电枢平行的电枢的表面相对, 吸引的方向。