JPH01141041U

JPH01141041U -

Info

Publication number: JPH01141041U
Application number: JP3883888U
Authority: JP
Priority date: 1988-03-24
Filing date: 1988-03-24
Publication date: 1989-09-27

Description

[Brief explanation of the drawing]

第１図は、実施例プリンタプロツタを示す断面
図、第２図は、実施例プリンタプロツタを示す概
略斜視図、第３図は、実施例プリンタプロツタの
回路構成例を示すブロツク図、第４図は、従来の
プリンタプロツタを示す斜視図、第５図は、デー
タ印字記録時のプラテンローラの圧変形を示す説
明図、第６図は、サーマルヘツドを降下させ記録
紙を逆戻しする状態を示す説明図、第７図Ａは、
プラテンローラの実効半径がスプロケツトの実効
半径より小さい場合に波形データが不連続となる
状態を示す説明図、第７図Ｂは、プラテンローラ
の実効半径がスプロケツトの実効半径より大きい
場合に波形データが不連続となる状態を示す説明
図、第８図は、記録紙にデータを重ね打ちした状
態を示す説明図である。１：プラテンローラ、２：スプロケツト、３：
パルスモータ、４：シヤフト、５：フオトセンサ
、６：クラツチ、１１：直結ギヤ、４１：軸受け
。 FIG. 1 is a sectional view showing the printer plotter of the embodiment, FIG. 2 is a schematic perspective view of the printer plotter of the embodiment, and FIG. 3 is a block diagram showing an example of the circuit configuration of the printer plotter of the embodiment. Fig. 4 is a perspective view showing a conventional printer plotter, Fig. 5 is an explanatory diagram showing the pressure deformation of the platen roller during data print recording, and Fig. 6 is a drawing of lowering the thermal head and reversing the recording paper. FIG. 7A is an explanatory diagram showing the state in which
Figure 7B is an explanatory diagram showing a state in which waveform data becomes discontinuous when the effective radius of the platen roller is smaller than the effective radius of the sprocket. FIG. 8 is an explanatory diagram showing a state in which data is discontinuous. FIG. 8 is an explanatory diagram showing a state in which data is overprinted on recording paper. 1: Platen roller, 2: Sprocket, 3:
Pulse motor, 4: shaft, 5: photo sensor, 6: clutch, 11: direct gear, 41: bearing.

Claims

[Scope of utility model registration request]

A shaft, a platen roller fitted onto the shaft via a bearing, a sprocket fixed to the shaft, a direct-coupled gear integrally attached to the platen roller and connected to a forward/reverse rotation motor, and this direct-coupled gear. 1. A printer comprising: a clutch which is disposed at a platen roller and which causes the sprocket to idle when the direct gear rotates in the forward direction, and rotates the sprocket in synchronization with the platen roller when the direct gear rotates in the reverse direction.