JPH0426732U

JPH0426732U -

Info

Publication number: JPH0426732U
Application number: JP6883490U
Authority: JP
Priority date: 1990-06-28
Filing date: 1990-06-28
Publication date: 1992-03-03

Description

[Brief explanation of the drawing]

第１図は印字前における印字ヘツドの断面図、
第２図は印字時における印字ヘツドの断面図であ
る。２……電磁石装置、５……印字作動部材（印字
レバー）、６……印字要素（印字ワイヤ）、７…
…ばね保持体（ワイヤガイド枠）、８……復帰ば
ね、８ａ……長復帰ばね部、８ｂ……短復帰ばね
部。 Figure 1 is a cross-sectional view of the print head before printing;
FIG. 2 is a sectional view of the print head during printing. 2... Electromagnetic device, 5... Printing operating member (printing lever), 6... Printing element (printing wire), 7...
...Spring holder (wire guide frame), 8... Return spring, 8a... Long return spring section, 8b... Short return spring section.

Claims

[Claims for Utility Model Registration] (1) It comprises an electromagnetic device, a printing operation member, a printing element, a spring holder, and a return spring, and the return spring has long return spring parts with different lengths. and a short return spring portion, the printing actuation member is capable of magnetically attracting and repelling the electromagnetic device, the printing element is driven by the printing actuation member, and the return spring is driven by the printing actuation member. The long return spring part of the return spring applies a spring force to the printing operation member toward its repulsion side, and the short return spring part applies a spring force to the printing operation member immediately before printing on the printing element. A printing head characterized in that a printing actuating member is biased with a spring force toward its repulsion side. (2) The print head according to claim 1, wherein the return spring is a double coil spring.