Needle printing head
    2.
    发明公开
    Needle printing head 有权
    Nadeldruckkopf

    公开(公告)号:EP1160087A1

    公开(公告)日:2001-12-05

    申请号:EP01112713.1

    申请日:2001-05-25

    申请人: COMPUPRINT S.p.A.

    IPC分类号: B41J2/28 B41J2/24

    摘要: A needle printing head comprising a support (11) able to axially guide a plurality of printing needles (15), each of which has one end attached to a mobile armature (16) of a corresponding actuation electromagnet (17) having a ferromagnetic core (18) provided with polar extensions. A separation element (30) is interposed between the mobile armatures (16) and the corresponding polar extensions. The separation element (30) is made of a metal material and comprises elements (33, 34) able to reduce the effects of the eddy currents which are generated by the energizing of every electromagnet (17).

    摘要翻译: 一种针式打印头,包括能够轴向引导多个印刷针(15)的支撑件(11),每个印刷针头的一端具有连接到具有铁磁芯的对应的致动电磁体(17)的可移动衔铁(16) 18)提供极性扩展。 分离元件(30)插入在移动电枢(16)和相应的极性延伸部分之间。 分离元件(30)由金属材料制成并且包括能够减少由每个电磁体(17)通电而产生的涡流的影响的元件(33,34)。