JPS58184430U

JPS58184430U - Paper size detection device in paper feeder

Info

Publication number: JPS58184430U
Application number: JP8006782U
Authority: JP
Inventors: 品田　政幸
Original assignee: 株式会社リコー
Priority date: 1982-05-31
Filing date: 1982-05-31
Publication date: 1983-12-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案と従来例の説明で用いた給紙装置の一例
の正断面図、第２図は同上給紙装置のサイドフェンスを
側方より見た図、第３図は従来の紙サイズ検出装置の、
シャツタ板ユニットのみを断面にした平面図、第４図は
本考案−実施例の紙サイズ検出装置の、シャツタ板ユニ
ットのみを断面にした平面図、第５図は給送すべき紙サ
イズに対応したセンサの出力コードの関係を示す図であ
る。４・・・・・・給紙トレイ、５・・・・・・紙束、７・
・・・・・サイドフェンス、１８ａ、　　１８ｂ、　　
１８ｃ、　　１８ａｍｍシャッタ板、Ｓｌ、Ｓ２．Ｓ３
．Ｓ４・・・・・・センサ。Figure 1 is a front sectional view of an example of a paper feeder used in explaining the present invention and conventional examples, Figure 2 is a side view of the side fence of the same paper feeder, and Figure 3 is a view of a conventional paper feeder. size detection device,
FIG. 4 is a plan view of the paper size detection device according to the present invention and an embodiment, with only the shirt flap unit as a cross section, and FIG. 5 corresponds to the paper sizes to be fed. FIG. 4...Paper feed tray, 5...Paper stack, 7.
...Side fence, 18a, 18b,
18c, 18am shutter plate, Sl, S2. S3
．． S4...Sensor.

Claims

[Claim for Utility Model Registration] When feeding sheets of paper stacked on a paper tray one by one from the top, parallel to the feeding direction,
In a paper feeding device in which one side edge of a paper stack is guided by a side fence that is movable in a direction perpendicular to the feeding direction, multiple types of paper stacks with different paper sizes to be fed are fed. A plurality of shirt shirt plates are arranged in parallel in the orthogonal direction according to the paper size, and the row of shirt shirt plates is fixed to the size fence side, and a set for detecting the stop position of each side fence corresponding to the paper size is installed. . The sensors are arranged sequentially in the above-mentioned orthogonal direction, shifted by a certain amount, so as to form a pair with each shirtter plate, and each shirtter plate and each sensor work together to generate an output signal from the sensor corresponding to the paper size. , each stop position of the side fence is coded (7), and this output code is made to be a symmetrical output code for the minimum size paper to be fed and the maximum size paper to be fed. Detection device.