JPH045947U

JPH045947U -

Info

Publication number: JPH045947U
Application number: JP4498490U
Authority: JP
Priority date: 1990-04-26
Filing date: 1990-04-26
Publication date: 1992-01-20
Anticipated expiration: 2005-04-26
Also published as: JP2509858Y2

Description

[Brief explanation of the drawing]

第１図は本考案を適用したプリンタの媒体給送
機構の概略斜視図、第２図は第１図に示した同上
媒体給送機構の側面図、第３図は第２図に示した
同上媒体給送機構の要部斜視図、第４図は第３図
のＡ−Ａ線での縦断側面図、第５図は第３図のＢ
−Ｂ線での縦断側面図、第６図はａ，ｂは同上媒
体給送機構の動作状態を説明するための側面図、
第７図は従来のプリンタにおける媒体給送機構の
一例を示す概略側面図、第８図は従来のプリンタ
における媒体給送機構の他の一例を示す概略側面
図である。１……プラテン、２……プツシユトラクタ、９
……ピンチローラ、１８……連続媒体、１９……
スプロケツト孔、２６……板ばね（板ばね手段）
、２６ａ……メインアーム（第１のばね部）、２
６ｂ……サポートアーム（第２のばね部）、２８
……カムシヤフト（押圧力調整手段）。 Fig. 1 is a schematic perspective view of the medium feeding mechanism of a printer to which the present invention is applied, Fig. 2 is a side view of the medium feeding mechanism shown in Fig. 1, and Fig. 3 is the same as shown in Fig. 2. A perspective view of the main parts of the medium feeding mechanism, FIG. 4 is a longitudinal cross-sectional side view taken along line A-A in FIG. 3, and FIG. 5 is a perspective view of B in FIG. 3.
- A vertical side view taken along line B; FIGS. 6a and 6b are side views for explaining the operating state of the medium feeding mechanism;
FIG. 7 is a schematic side view showing an example of a medium feeding mechanism in a conventional printer, and FIG. 8 is a schematic side view showing another example of a medium feeding mechanism in a conventional printer. 1...Platen, 2...Push tractor, 9
... Pinch roller, 18 ... Continuous medium, 19 ...
Sprocket hole, 26... leaf spring (leaf spring means)
, 26a... Main arm (first spring part), 2
6b...Support arm (second spring part), 28
...Camshaft (pressing force adjustment means).

Claims

[Claims for Utility Model Registration] A cylindrical platen, a pinch roller that abuts the platen from the opposite side across a medium path, and a leaf spring means that applies a pressing force for the pinch roller to abut the platen. , a push tractor that engages a pin in a sprocket hole of the medium passing through the medium path and feeds the medium between the platen and the pinch roller, wherein the pinch roller The leaf spring means is provided with a plurality of spring parts for pressing the roller against the platen, and a pressing force adjusting means selects the spring part to be applied to the pinch roller to switch the pressing force of the pinch roller against the platen. A medium feeding mechanism for a printer, characterized in that: