JPH02104249U

JPH02104249U -

Info

Publication number: JPH02104249U
Application number: JP1342189U
Authority: JP
Priority date: 1989-02-07
Filing date: 1989-02-07
Publication date: 1990-08-20

Description

[Brief explanation of drawings]

図面は本考案の実施例を示すもので、第１図は
電子タイプライタの斜視図、第２図は印字機構の
斜視図、第３図はリフトカムとプラテン支持部材
の要部側面図、第４図はキヤリツジの分解斜視図
、第５図はヘツド駆動カムの側面図、第６図はサ
ーマルヘツドをリリース位置へ移動させたときの
圧接機構の概略斜視図、第７図は非印字位置にあ
るヘツド駆動カムとヘツド用カムレバーの側面図
、第８図はサーマルヘツドを圧接位置へ移動させ
たときの第６図相当図、第９図はコレクシヨン位
置にあるヘツド駆動カムを含む第７図相当図、第
１０図はリフトカムが印字位置のときの第３図相
当図、第１１図は文字消去時にサーマルヘツドを
圧接位置へ移動させたときの第６図相当図、第１
２図はコレクシヨン位置にあるヘツド駆動カムと
ヘツド用カムレバーとの位置関係及びコレクシヨ
ン位置にあるブレード駆動カムとブレート用カム
レバーとの位置関係を示す側面図、第１３図はリ
フトカムがコレクシヨン位置のときの第３図相当
図、第１４図はコレクタブル転写リボンの拡大横
断面図、第１５図はタイプライタの制御系のブロ
ツク図、第１６図はプラテン切換え制御のルーチ
ンのフローチヤート、第１７図ａ，ｂ，ｃは夫々
コレクタブル転写リボンによる文字印字及び文字
消去の各段階を説明する拡大断面図である。５…文字キー、６…コレクシヨンキー、１０…
圧接機構、１１…プラテン支持部材、１４…キヤ
リツジ、１７…サーマルヘツド、６６…プラテン
切換モータ、７０…ＣＰＵ、７１…ＲＯＭ、７２
…ＲＡＭ、８１…駆動機構、８２…印字用プラテ
ン、８３…コレクシヨン用プラテン、８５…プー
リ付ギヤ、８６…タイミングベルト、８７…従動
プーリ、８８…リフトカム、８９…支軸、９０…
ピン、Ｃ…制御装置。 The drawings show an embodiment of the present invention; Fig. 1 is a perspective view of an electronic typewriter, Fig. 2 is a perspective view of the printing mechanism, Fig. 3 is a side view of the main parts of the lift cam and platen support member, and Fig. 4 is a perspective view of the electronic typewriter. The figure is an exploded perspective view of the cartridge, Figure 5 is a side view of the head drive cam, Figure 6 is a schematic perspective view of the pressure contact mechanism when the thermal head is moved to the release position, and Figure 7 is in the non-printing position. A side view of the head drive cam and the head cam lever, Fig. 8 is a view corresponding to Fig. 6 when the thermal head is moved to the pressure contact position, and Fig. 9 is a view corresponding to Fig. 7 including the head drive cam in the collection position. , Figure 10 is a diagram equivalent to Figure 3 when the lift cam is in the printing position, Figure 11 is a diagram equivalent to Figure 6 when the thermal head is moved to the pressure position when erasing characters, and Figure 1 is a diagram equivalent to Figure 1.
Figure 2 is a side view showing the positional relationship between the head drive cam and the head cam lever at the collection position, and the positional relationship between the blade drive cam and the blade cam lever at the collection position. Figure 13 is a side view showing the positional relationship between the head drive cam and the blade cam lever at the collection position. 3 is a diagram corresponding to FIG. 14, FIG. 14 is an enlarged cross-sectional view of the collectable transfer ribbon, FIG. 15 is a block diagram of the typewriter control system, FIG. 16 is a flowchart of the platen switching control routine, and FIG. 17a, b and c are enlarged cross-sectional views illustrating each stage of character printing and character erasing using the collectable transfer ribbon. 5...Character key, 6...Collection key, 10...
Pressure contact mechanism, 11... Platen support member, 14... Carriage, 17... Thermal head, 66... Platen switching motor, 70... CPU, 71... ROM, 72
...RAM, 81... Drive mechanism, 82... Printing platen, 83... Collection platen, 85... Gear with pulley, 86... Timing belt, 87... Driven pulley, 88... Lift cam, 89... Support shaft, 90...
Pin, C...control device.

Claims

[Claims for Utility Model Registration] A thermal printer comprising a platen, a thermal head facing the platen, and a carriage that supports the thermal head and is movable back and forth along the platen, wherein the platen is a first platen. a second platen having a hardness lower than that of the first platen, and a driving means for selectively switching the first platen and the second platen to a use position facing the thermal head; 1. A thermal printer comprising: control means for controlling the drive means to position the platen in the use position and to position the second platen in the use position when an erase command is received.