JPS63132747U

JPS63132747U -

Info

Publication number: JPS63132747U
Application number: JP2572887U
Authority: JP
Priority date: 1987-02-20
Filing date: 1987-02-20
Publication date: 1988-08-30

Description

[Brief explanation of drawings]

第１図は本考案用紙長設定装置の正面図、第２
図は用紙長設定部の概略図、第３図は１個あるい
は２個の検出信号より用紙長設定出力信号を取り
出す回路の構成図、第４図は第３図の回路を用い
た場合の用紙長と用紙長設定出力信号の関係を示
すグラフである。また第５図、第６図は従来の用
紙長設定部の概略図である。図において、１はシ
ヤフト、２は固定具、３は磁石、４はホール素子
、５はプレート、６は制御回路である。 Figure 1 is a front view of the paper length setting device of the present invention;
The figure is a schematic diagram of the paper length setting section, Figure 3 is a block diagram of a circuit that extracts a paper length setting output signal from one or two detection signals, and Figure 4 is a diagram of the paper length setting section when the circuit in Figure 3 is used. 7 is a graph showing the relationship between paper length and paper length setting output signal. Further, FIGS. 5 and 6 are schematic diagrams of a conventional paper length setting section. In the figure, 1 is a shaft, 2 is a fixture, 3 is a magnet, 4 is a Hall element, 5 is a plate, and 6 is a control circuit.

Claims

[Scope of utility model registration request]

A magnet is attached to one of the printer body and a paper length setting lever that is moved according to the length of the folding perforation of the printing paper, and a plurality of Hall elements are provided on the other side, and the paper length setting lever is moved according to the position of the paper length setting lever. , in a paper length detection device for a printer that detects the print paper length from the output of the Hall element facing the magnet, the Hall elements are arranged at intervals wider than a unit movement amount of the paper length setting lever;
A paper length detecting device for a printer, characterized in that magnets having magnetic flux over a wider range than the distance between the Hall elements are opposed to each other.