JPH0210944U

JPH0210944U -

Info

Publication number: JPH0210944U
Application number: JP1988089359U
Authority: JP
Priority date: 1988-07-05
Filing date: 1988-07-05
Publication date: 1990-01-24

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の第一の実施例を示す平面図、
第２図は縦断正面図、第３図はニードルの先端が
描く軌跡の説明図、第４図はアーマチユアを第一
ヨークに取付ける際の説明図、第５図は要部の斜
視図、第６図は第二の実施例の平面図、第７図は
ニードルの先端が描く軌跡の説明図である。１……釈放型ドツトプリンタヘツド、４……ア
ーマチユア、６……ニードル、７……弾性部材、
１４……ニードルカバー、１５……開口、１７…
…磁気部材、１８……電磁コイル、２２……釈放
型ドツトプリンタヘツド、２３……ニードルカバ
ー、２４……開口。 FIG. 1 is a plan view showing the first embodiment of the present invention;
Figure 2 is a vertical front view, Figure 3 is an explanatory diagram of the locus drawn by the tip of the needle, Figure 4 is an explanatory diagram when attaching the armature to the first yoke, Figure 5 is a perspective view of the main parts, and Figure 6 is an explanatory diagram of the trajectory drawn by the tip of the needle. The figure is a plan view of the second embodiment, and FIG. 7 is an explanatory diagram of the locus drawn by the tip of the needle. DESCRIPTION OF SYMBOLS 1... Release type dot printer head, 4... Armature, 6... Needle, 7... Elastic member,
14... Needle cover, 15... Opening, 17...
... Magnetic member, 18 ... Electromagnetic coil, 22 ... Release type dot printer head, 23 ... Needle cover, 24 ... Opening.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

ニードルが先端部に立設され弾性部材により用
紙の方向に付勢された複数のアーマチユアを設け
、これらのアーマチユアを磁気吸着する磁気部材
とこの磁気部材の磁気引力を打消す磁力を発する
電磁コイルとが設けられた釈放型ドツトプリンタ
ヘツドにおいて、前記アーマチユアの先端部に短
く形成したニードルを立設し、これらのニードル
の先端の動作範囲内に前記用紙側の面を位置させ
たニードルカバーを設け、このニードルカバーに
前記アーマチユアの長手方向に長い開口を前記ニ
ードル毎に形成したことを特徴とする釈放型ドツ
トプリンタヘツド。 A plurality of armatures each having a needle erected at its tip and urged in the direction of the paper by an elastic member are provided, a magnetic member magnetically attracts these armatures, and an electromagnetic coil emits a magnetic force that cancels the magnetic attraction of the magnetic member. In the release type dot printer head provided with a dot printer head, short needles are erected at the tips of the armature, and a needle cover is provided with the paper side surface positioned within the operating range of the tips of these needles. A release type dot printer head characterized in that a needle cover is formed with an opening long in the longitudinal direction of the armature for each needle.