JPH0294138U

JPH0294138U -

Info

Publication number: JPH0294138U
Application number: JP49589U
Authority: JP
Priority date: 1989-01-09
Filing date: 1989-01-09
Publication date: 1990-07-26
Anticipated expiration: 2004-01-09
Also published as: JPH0639981Y2

Description

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

第１図は本考案によるシリアルサーマルプリン
タの一実施例を示す要部平面断面図、第２図は同
実施例の側断面図、第３図は第４図におけるキヤ
リツジ及びサーマルヘツドを示す分解斜視図、第
４図は同実施例の第１キヤリツジを示す分解斜視
図、第５図は同実施例のプラテンを示す分解斜視
図、第６図はサーマルヘツドの素子例を示す説明
図、第７図Ａ，Ｂは本実施例の作用を示す平面断
面図、第８図は印字媒体セツト時の要部側断面図
、第９図は第８図のＥ矢視図、第１０図は従来例
を示す要部平面断面図、第１１図は従来例の側断
面図、第１２図は同従来例の要部分解斜視図であ
る。１５……プラテン、１７……突部、２２……サ
ーマルヘツド、２８……上部ガイドシヤフト、２
９……下部ガイドシヤフト、３１……第１キヤリ
ツジ、３５……第２キヤリツジ、３９……アーム
部、４０……スプリング、４１……貫通孔、４２
……フオロワ、４３……凹部。 Fig. 1 is a plan sectional view of essential parts showing an embodiment of a serial thermal printer according to the present invention, Fig. 2 is a side sectional view of the same embodiment, and Fig. 3 is an exploded perspective view showing the carriage and thermal head in Fig. 4. 4 is an exploded perspective view showing the first carriage of the same embodiment, FIG. 5 is an exploded perspective view showing the platen of the same embodiment, FIG. 6 is an explanatory diagram showing an example of a thermal head element, and FIG. Figures A and B are plan sectional views showing the operation of this embodiment, Figure 8 is a side sectional view of main parts when printing medium is set, Figure 9 is a view taken in the direction of arrow E in Figure 8, and Figure 10 is a conventional example. FIG. 11 is a side sectional view of a conventional example, and FIG. 12 is an exploded perspective view of important parts of the conventional example. 15...Platen, 17...Protrusion, 22...Thermal head, 28...Upper guide shaft, 2
9...Lower guide shaft, 31...First carriage, 35...Second carriage, 39...Arm portion, 40...Spring, 41...Through hole, 42
...Fuoroi, 43...Concavity.

Claims

【実用新案登録請求の範囲】プラテンと、該プラテンに対し平行な第１のガイドシヤフト
に嵌合してスペース移動する第１のキヤリツジと
、同プラテンに対し平行な第２のガイドシヤフト
に嵌合するとともに前記第１のキヤリツジに係合
して第１のキヤリツジのスペース移動に連動して
スペース移動する第２のキヤリツジと、該第２のキヤリツジに搭載されプラテンと対向
するサーマルヘツドと、第２のキヤリツジをプラテン側へ付勢するスプ
リングとを有するとともに、プラテン側と第２のキヤリツジ側にそれぞれ平
坦部を有する突部を設け、前記プラテン側の突部に第２のキヤリツジ側の
突部を乗り上げることでヘツドアツプを行うシリ
アルサーマルプリンタにおいて、前記第１のキヤリツジに、第１のガイドシヤフ
トに対向した貫通孔を設け、前記スプリングの一端をフオロワで受けるとと
もに、該フオロワを前記貫通孔にスライド自在に
嵌合し、かつ、プラテン側の突部に第２のキヤリツジ側
の突部が乗り上げた時に貫通孔が対向する位置に
カム形状の凹部を設けたことを特徴とするシリア
ルサーマルプリンタ。[Claims for Utility Model Registration] A platen, a first carriage that is fitted into a first guide shaft parallel to the platen and moves in space, and a first carriage which is fitted into a second guide shaft parallel to the platen. a second carriage that engages with the first carriage and moves in space in conjunction with the space movement of the first carriage; a thermal head that is mounted on the second carriage and faces the platen; a spring that biases the carriage toward the platen side, protrusions each having a flat portion are provided on the platen side and the second carriage side, and a protrusion on the second carriage side is provided on the protrusion on the platen side. In a serial thermal printer that lifts up the head by riding on the printer, the first carriage is provided with a through hole opposite to the first guide shaft, one end of the spring is received by a follower, and the follower is slidable into the through hole. What is claimed is: 1. A serial thermal printer, wherein a cam-shaped recess is provided at a position where the through hole faces when the protrusion on the second carriage side rides on the protrusion on the platen side.