JPS6159052U

JPS6159052U -

Info

Publication number: JPS6159052U
Application number: JP14307584U
Authority: JP
Priority date: 1984-09-21
Filing date: 1984-09-21
Publication date: 1986-04-21

Description

[Brief explanation of drawings]

第１図は本考案の一実施例になるシリアルプリ
ンタの印字部のヘツドダウン状態を示す側面図、
第２図は第１図の記録紙とプラテンを除いたＡ矢
視正面図、第３図はサーマルヘツド支持金具を裏
面側より見た斜視図、第４図はねじりコイルばね
の斜視図、第５図は前記印字部のヘツドアツプ状
態を示す側面図、第６図は従来構成になるシリア
ルサーマルプリンタの印字部を説明するための斜
視図、第７図は従来構成になる熱転写型シリアル
サーマルプリンタのキヤリヤとそのガイドを示す
斜視図、第８図は前記キヤリヤに搭載するフイル
ムカセツトの内部構成を示す平面図、である。図中において、１はプラテン、３，３１はキヤ
リヤテーブル、５はサーマルヘツド、６，３２は
支持金具、３３，３４は突起、３７はねじりコイ
ルばね、３９は永久磁石、４５，４６は固定片、
を示す。 FIG. 1 is a side view showing the head-down state of the printing unit of a serial printer which is an embodiment of the present invention;
Figure 2 is a front view as seen from arrow A, excluding the recording paper and platen in Figure 1, Figure 3 is a perspective view of the thermal head support fitting seen from the back side, Figure 4 is a perspective view of the torsion coil spring, and Figure 4 is a perspective view of the torsion coil spring. Figure 5 is a side view showing the head-up state of the printing unit, Figure 6 is a perspective view illustrating the printing unit of a serial thermal printer with a conventional configuration, and Figure 7 is a diagram of a thermal transfer serial thermal printer with a conventional configuration. FIG. 8 is a perspective view showing the carrier and its guide, and FIG. 8 is a plan view showing the internal structure of the film cassette mounted on the carrier. In the figure, 1 is a platen, 3 and 31 are carrier tables, 5 is a thermal head, 6 and 32 are support fittings, 33 and 34 are protrusions, 37 is a torsion coil spring, 39 is a permanent magnet, and 45 and 46 are fixed piece,
shows.

Claims

[Scope of utility model registration request]

A swingable print head mounted on a carrier that reciprocates along the platen is in a head-down state in which it presses the recording medium against the platen with appropriate pressure during printing as it moves from one side to the other along the platen, and the print head presses the recording medium against the platen with an appropriate pressure. In a serial printer in a head-up state in which the pressure is released when moving from the printer to the one side, the carrier includes a head-down elastic spring and a head-up magnet having a magnetic force capable of maintaining magnetic attraction against the elastic spring. a support metal fitting that swingably supports the print head is provided with protrusions that respectively protrude from the ends in the reciprocating direction, and a housing of the printer or the like is provided with fixing pieces that respectively face the pair of protrusions. When the protrusion hits the fixing piece at the one end, the print head status is switched from the head-up state to the head-down state against the attraction force of the magnet, and the print head is fixed at the other end. A head-up mechanism for a serial printer, characterized in that when the protrusion comes into contact with the piece, the print head position is switched from a head-down state to a head-up state against the elastic force of the spring.