JPH0350460U

JPH0350460U -

Info

Publication number: JPH0350460U
Application number: JP10965289U
Authority: JP
Priority date: 1989-09-21
Filing date: 1989-09-21
Publication date: 1991-05-16

Description

[Brief explanation of drawings]

第１図は本考案によるサーマルプリンタの一実
施例の詳細を示す要部四面図、第２図は第１図に
おけるサーマルヘツドとキヤリツジの正面側から
見た斜視図、第３図は同じく背面側から見た斜視
図、第４図は実施例の印字動作時の状態を示す要
部平面図、第５図は実施例の作用を説明するため
の要部平面図、第６図は従来のサーマルプリンタ
を示す側断面図、第７図は第６図におけるプラテ
ンの斜視図、第８図は第４図におけるサーマルヘ
ツドとキヤリツジの正面側から見た斜視図、第９
図は同じく背面側から見た斜視図、第１０図は従
来のサーマルプリンタの問題点を説明するための
要部平面図である。５……プラテン、１１……サーマルヘツド、１
２……ヘツド基板、１３……ヒートシンク、１４
……グレーズ膜、１５……発熱素子、１７……取
り付け部、１８……抜け止め部、２０……上部ガ
イドシヤフト、２１……下部ガイドシヤフト、２
２……駆動シヤフト、２４……第１キヤリツジ、
３３……スプリング、３９……第２キヤリツジ、
４２……取り付け溝、４３……凸部。 Fig. 1 is a four-sided view of the main parts showing details of an embodiment of the thermal printer according to the present invention, Fig. 2 is a perspective view of the thermal head and carriage in Fig. 1 seen from the front side, and Fig. 3 is a rear side view as well. FIG. 4 is a plan view of the main parts showing the state of the printing operation of the embodiment, FIG. 5 is a plan view of the main parts for explaining the operation of the embodiment, and FIG. 6 is a conventional thermal printer. 7 is a perspective view of the platen in FIG. 6, FIG. 8 is a perspective view of the thermal head and carriage seen from the front side in FIG. 4, and FIG. 9 is a side sectional view showing the printer.
The figure is a perspective view similarly seen from the back side, and FIG. 10 is a plan view of the main part for explaining the problems of the conventional thermal printer. 5...Platen, 11...Thermal head, 1
2...Head board, 13...Heat sink, 14
... Glaze film, 15 ... Heat generating element, 17 ... Attachment part, 18 ... Retaining part, 20 ... Upper guide shaft, 21 ... Lower guide shaft, 2
2... Drive shaft, 24... First carriage,
33...Spring, 39...Second carriage,
42...Mounting groove, 43...Protrusion.

Claims

[Claims for Utility Model Registration] A platen rotatably supported on both sides, a carriage that is rotatable in a direction opposite to the platen and capable of reciprocating along the platen, and held by the carriage. and a thermal head having a heating element array protruding toward the platen side for printing on the printing medium, and urging means for applying a biasing force to the carriage so as to press the heating element array toward the platen side. In the thermal printer, the carriage is provided with a convex portion located behind the heat generating element row, and the thermal head is mounted on the carriage so that the thermal head can rotate about the convex portion in a direction perpendicular to the heat generating element row. What is claimed is: 1. A thermal printer according to claim 1, wherein the thermal printer is held at a position where the biasing means is disposed behind the convex portion.