发明名称 |
Matrix print head, in particular serial matrix pin print head |
摘要 |
A matrix pin print head with a print pin guide casing (7) and a print pin drive casing (9) comprises an electromagnetic drive (12). The electromagnetic drive (12) comprises a magnet yoke (13) with an electromagnetic coil (14) disposed on a magnet yoke arm (13a) and with an armature (15). The armature (15) can be pivoted based on a pin bearing (16) and rests in a rearward position against a stop (18) by means of a spring (17). An operating air gap (20) is formed between the armature (15) and a magnet yoke arm front face (19). A recess (22) is disposed in the middle of the magnet yoke thickness (21) to furnish the preconditions for an assembly line production exhibiting the corresponding precision and a correspondingly bundled magnetic flux. A pin driving arm (15a) of the armature is pivotably supported in the recess (22) by way of the hinge pin (23), wherein the hinge pin axis (23a) runs laterally to the region of the magnet yoke arm center (24).
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申请公布号 |
US5290112(A) |
申请公布日期 |
1994.03.01 |
申请号 |
US19900628715 |
申请日期 |
1990.12.17 |
申请人 |
MANNESMANN AKTIENGESELLSCHAFT |
发明人 |
STEMPFLE, JOHANN;GUGEL, BERND |
分类号 |
B41J2/235;B41J2/275;(IPC1-7):B41J2/275 |
主分类号 |
B41J2/235 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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