公开(公告)号：US06784907B2

公开(公告)日：2004-08-31

申请号：US10200180

申请日：2002-07-23

申请人： Yasunobu Terao ,  Tetsuro Ichitani ,  Masayuki Iinuma ,  Takahiro Kawaguchi ,  Keishi Tsuchiya ,  Takeshi Okui

发明人： Yasunobu Terao ,  Tetsuro Ichitani ,  Masayuki Iinuma ,  Takahiro Kawaguchi ,  Keishi Tsuchiya ,  Takeshi Okui

IPC分类号： B41J232

CPC分类号： B41J2/22

摘要： The present invention is a wire dot printer head wherein a spacer is inserted between a yoke block and a head holder. The yoke block has yokes opposed to plural armatures, coils wound respectively round plural cores whose one ends are opposed to the armatures, and fulcrum portions which hold the armatures so that the armatures can rise and fall with respect to end faces of the cores. The spacer is adapted to move under the action of an external force, thereby changing the spacing between the yoke block and the head holder.

摘要翻译： 本发明是一种线点打印机头，其中间隔件插入在轭块和头架之间。 磁轭块具有与多个电枢相对的磁轭，分别缠绕在其一端与电枢相对的多个磁芯上的线圈，以及支撑电枢的支点部分，使电枢相对于磁芯的端面上升和下降。 间隔件适于在外力的作用下移动，从而改变轭块与头架之间的间隔。

公开(公告)号：US06729782B2

公开(公告)日：2004-05-04

申请号：US10229014

申请日：2002-08-28

申请人： Tetsuro Ichitani ,  Yasunobu Terao ,  Takahiro Kawaguchi ,  Keishi Tsuchiya ,  Takeshi Okui

发明人： Tetsuro Ichitani ,  Yasunobu Terao ,  Takahiro Kawaguchi ,  Keishi Tsuchiya ,  Takeshi Okui

IPC分类号： B41J2275

CPC分类号： B41J2/22

摘要： In the wire dot printer head of the present invention, there is provided an armature stopper against which an armature having pivoted from a printing position to a stand-by position comes into abutment, the armature stopper being formed by bonding an elastic plate and a hard plate with each other into an integral combination and thereafter punching the integral combination from the hard plate side. By this punching work the armature stopper is warped so that the hard plate side is convex in shape. With this warp, when the armature having pivoted to the stand-by position comes into abutment against the armature stopper, the armature stopper deflects in a direction to eliminate the warp. With this deflecting motion, an impact force induced upon mutual abutment of the armature and the armature stopper is diminished and deformation or chipping of the hard plate are suppressed, further, the durability of the armature stopper is improved and the printing accuracy is kept high over a long period.

摘要翻译： 在本发明的丝点打印机头中，设置有从打印位置转动到待机位置的电枢抵靠的电枢止动器，电枢止动器通过将弹性板和硬接合 彼此成为一体的组合，然后从硬板侧冲压整体组合。 通过这种冲压工作，电枢止动器变形，使得硬板侧面呈凸形。 通过该翘曲，当已经枢转到待机位置的电枢抵靠电枢止挡件时，电枢止动器沿着消除翘曲的方向偏转。 通过这种偏转运动，电枢和电枢止动器的相互邻接引起的冲击力减弱，硬板的变形或破碎被抑制，电枢止动器的耐久性提高，印刷精度保持高 很长一段时间

公开(公告)号：US06698956B1

公开(公告)日：2004-03-02

申请号：US10228940

申请日：2002-08-28

申请人： Yasunobu Terao ,  Takahiro Kawaguchi ,  Tetsuro Ichitani ,  Keishi Tsuchiya ,  Takeshi Okui

发明人： Yasunobu Terao ,  Takahiro Kawaguchi ,  Tetsuro Ichitani ,  Keishi Tsuchiya ,  Takeshi Okui

IPC分类号： B41J2275

CPC分类号： B41J2/22

摘要： In the wire dot printer head of the present invention, an armature adapted to move pivotally between a printing position and a stand-by position is provided with a pivot shaft serving as a fulcrum, and the pivot shaft is pinched and supported by a pair of support members from both sides in the pivoting direction of the pivot shaft. In at least one support member is formed a concave support groove into which an outer periphery surface of the pivot shaft is inserted in a state of surface contact with the groove. When the armature moves pivotally in a printing operation, the surface of contact increases because the pivot shaft and the pivot groove are in surface contact with each other, thus preventing the occurrence of a local concentration of a strong force on the contact portion between the pivot shaft and the support groove. Besides, such a motion of the pivot shaft as being rubbed against the other support member is restricted by the aforesaid surface contact, whereby the wear between the pivot shaft and the other support member is also diminished. Consequently, wobbling of the pivot shaft during printing is prevented and variations in a wire tip position are also prevented, thus ensuring a high print quality.

摘要翻译： 在本发明的丝点打印机头中，适于在打印位置和待机位置之间枢转运动的电枢设置有用作支点的枢轴，并且枢转轴被一对 在枢轴的枢转方向上从两侧支撑构件。 在至少一个支撑构件形成有凹形支撑槽，枢轴的外周表面以与槽表面接触的状态插入该凹槽中。 当衔铁在打印操作中枢转地移动时，由于枢转轴和枢转槽彼此表面接触，所以接触表面增加，从而防止在枢轴之间的接触部分局部集中强力 轴和支撑槽。 此外，枢转轴的摩擦抵靠另一个支撑构件的运动受到上述表面接触的限制，由此枢轴和另一个支撑构件之间的磨损也减小。 因此，防止了打印期间枢轴的摆动，并且也防止了引线位置的变化，从而确保了高的打印质量。