JPS61166446A - Paper feeding device - Google Patents

Paper feeding device

Info

Publication number
JPS61166446A
JPS61166446A JP780985A JP780985A JPS61166446A JP S61166446 A JPS61166446 A JP S61166446A JP 780985 A JP780985 A JP 780985A JP 780985 A JP780985 A JP 780985A JP S61166446 A JPS61166446 A JP S61166446A
Authority
JP
Japan
Prior art keywords
paper
paper feeding
roller
paper feed
feeding direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP780985A
Other languages
Japanese (ja)
Inventor
Yuji Suga
祐司 菅
Hiroshi Iwaki
紘 岩木
Yoshiharu Mita
三田 嘉治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP780985A priority Critical patent/JPS61166446A/en
Publication of JPS61166446A publication Critical patent/JPS61166446A/en
Pending legal-status Critical Current

Links

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PURPOSE:To easily pull-out a paper sheet in the opposite direction to the paper feeding direction by prohibiting the revolution of a frictional roller for separat ing the paper sheets press-attached onto a paper feeding roller and permitting the revolution in the opposite direction to the paper feeding direction. CONSTITUTION:When a paper feeding roller 3 is revolved counterclokwise (A direction), the paper sheet 2a in the uppermost part is transported in the paper feeding direction (A direction). Since, in this case, the clockwise revolution (opposite direction to the paper feeding direction) of a frictional roller 9 is progibited by a spring clutch 13, the advance of the paper sheets 2 ... succeeding to the second paper sheet is suppressed. When the aparatus stops in the state where the paper sheet 2a is nipped between the paper feeding roller 3 and the frictional roller 9 by a certian cause, the paper sheet 2a is pulled-out in the B-direction, and then the frictional roller 9 revolves in the B-direction. Therefore, the paper sheet 2a can be easily pulled-out in the opposite direction (B direction) to the paper feeding direction.

Description

【発明の詳細な説明】 (イ1 産業上の利用分野 本発明は、複写機、印刷機等に組込まれる給紙装置に関
するものである。
DETAILED DESCRIPTION OF THE INVENTION (1) Industrial Application Field The present invention relates to a paper feeding device incorporated into a copying machine, a printing machine, etc.

1口1 従来の技術 従来の給紙装置は、例えば特公昭58−7582号公報
に記載されているように、積載されている用紙の下流側
に不動の摩擦板が備えられているため1次のような不都
合があった。
1 Port 1 Prior Art Conventional paper feeding devices, as described in Japanese Patent Publication No. 58-7582, for example, are equipped with an immovable friction plate on the downstream side of the stacked paper, so that the primary There were such inconveniences.

前記従来の技術の不都合を明らかにするため、先ず従来
装置につき、第2図に従がい説明する。
In order to clarify the disadvantages of the conventional technique, the conventional device will first be explained with reference to FIG.

この図において、(1)は用紙(2)−・・が積載収納
される給紙台で、この給紙台(11の給紙方向に沿って
下流側端縁近傍の上部には、最上部の用紙(2a)に圧
接される給紙ローラ(3)が設けられている。また、前
記積載されている用紙(2)・・・の下流側端縁よりも
下流側に、前記給紙ローラ(3)に圧接し、給紙時に用
紙(2)・・・を1枚づつ分離する摩擦板(4)が設け
られている。この摩擦板(4)はウレタンゴムにて形成
され、下部の支持軸(5)を支点として揺動自在に設け
られているく字然、のレバー(6)の上面に、固着され
ている。前記レバー(6)の裏面と、基台(7)との間
には圧縮ばね(8)が介装されており、このレバー(6
)を反時計方向、即ち給紙ローラ(3)の中心方向に押
圧付勢している。
In this figure, (1) is a paper feed tray on which sheets of paper (2), etc. are loaded and stored. A paper feed roller (3) is provided which is pressed against the paper (2a).Furthermore, the paper feed roller (3) is provided downstream of the downstream edge of the stacked paper (2). A friction plate (4) is provided which is in pressure contact with the paper (3) and separates the paper (2) one by one during paper feeding.This friction plate (4) is made of urethane rubber, and the lower part It is fixed to the upper surface of a lever (6) which is swingable about the support shaft (5).The back surface of the lever (6) and the base (7) are fixed to each other. A compression spring (8) is interposed between the levers (6
) is pressed counterclockwise, that is, toward the center of the paper feed roller (3).

このような従来*tlにおいて、給紙ローラ(3)が給
紙方向(入方向)に回転すると、用紙(2)−・・は最
上部のもの(2a)を含め数枚のものが下流側に向けて
給送される。しかし、最上部から2枚目以下の用紙<2
1−・・は前記摩擦板(4)にて行く手を阻まれるので
、最上部の用紙(2a)のみが分離されて給送されるこ
とになる。
In such a conventional *tl, when the paper feed roller (3) rotates in the paper feeding direction (input direction), several sheets of paper (2), including the top one (2a), are on the downstream side. will be sent to. However, the second sheet of paper from the top <2
1-... are blocked by the friction plate (4), so only the uppermost sheet (2a) is separated and fed.

ところが、何らかの原因で1itliie用紙(2a)
が給紙ローラ(3)と摩擦板(4)とによって挾持され
でいる状態で、装置が停止してしまい、それ以上その用
紙(2a)が紛込されなくなる場合が生じることがある
。斯る場合、前記用紙(2a)を給紙方向(入方向)と
は反対の方向(B方向)に引張ればよいが、そうすると
、それに伴い1記摩擦板(4)には、更に反時計方向の
回転力が加わり、結果として、+!0記用紙(2a)は
前記圧縮はね(7)の押圧力を邊に超える力にて、給紙
ローラ(3)と摩擦板(4)にて挾持されることになる
。従って、給紙方向とは反対の方向(B方向)には引き
出されず、無理に引き出すと前記用紙(2a)が破断す
る虞がある。
However, for some reason, 1itliie paper (2a)
The apparatus may stop while the paper (2a) is being held between the paper feed roller (3) and the friction plate (4), and the paper (2a) may no longer be inserted. In such a case, the paper (2a) may be pulled in the direction (B direction) opposite to the paper feeding direction (input direction), but if this is done, the friction plate (4) will also have a counterclockwise position. A rotational force in the direction is added, and as a result, +! The paper (2a) marked 0 is held between the paper feed roller (3) and the friction plate (4) with a force that exceeds the pressing force of the compression spring (7). Therefore, the paper (2a) cannot be pulled out in the direction opposite to the paper feeding direction (direction B), and there is a risk that the paper (2a) may break if pulled out forcibly.

(ハ)発明が解決しようとする問題点 前述のように、従来の技術では、用紙(2a)が給紙ロ
ーラ(3)と摩擦板(4)にて挾持されている状態で装
置が停止すると、その用紙(2a)を給紙方向(入方向
)とは反対の方向(B方向)に引き出すことが困難であ
った。この場合、前記用紙(2a)を無理に引き出すと
、摩擦板(4)が剥離したシ、用紙(2a)が破断し、
その断片が装置内部に残留して、装置の故障の原因とな
るという問題点を有していた。
(C) Problems to be Solved by the Invention As mentioned above, in the conventional technology, if the apparatus stops while the paper (2a) is being held between the paper feed roller (3) and the friction plate (4), , it was difficult to pull out the paper (2a) in the direction (B direction) opposite to the paper feeding direction (input direction). In this case, if the paper (2a) is forcibly pulled out, the friction plate (4) will peel off and the paper (2a) will break.
There is a problem in that the fragments remain inside the device and cause the device to malfunction.

目 問題点を解決するための手段 本発明は、用紙が積載される給紙台と、この給紙台の給
紙方向に沿って下流側端縁近傍の上部に設けられ、最上
部の用紙に圧接される給紙ローラと、積載されている用
紙の下流側端縁よりも下流側にて前記給紙コーラに圧接
され、給紙時に用紙を1枚づつ分離する摩擦ローラと、
この摩擦ローラの、給紙方向への回転を禁止し、給紙方
向と反対方向への回転のみを許容する手段とが具備され
ている給紙装置である。
MEANS FOR SOLVING THE PROBLEMS The present invention provides a paper feed table on which sheets are stacked, and a paper feed table provided at the upper part of the paper feed table near the downstream edge along the paper feeding direction, so that the uppermost sheet a paper feed roller that is pressed into contact with the paper feed roller, and a friction roller that is pressed against the paper feed roller on the downstream side of the downstream edge of the stacked paper sheets and separates the paper sheets one by one during paper feeding;
This paper feeding device is equipped with means for prohibiting rotation of the friction roller in the paper feeding direction and only allowing rotation in the opposite direction to the paper feeding direction.

(ホ)作 用 本発明では、給紙ローラに圧接されている用紙分離用の
摩擦ローラに、給紙方向への回転を禁止し、給紙方向と
反対方向への回転を許容する半輪が装着されているので
、用紙を給紙方向と反対方向へ引き出すと、その用紙は
破断することなく容易に引き出される。
(E) Function In the present invention, the friction roller for paper separation that is in pressure contact with the paper feed roller has a half ring that prohibits rotation in the paper feed direction and allows rotation in the opposite direction to the paper feed direction. Since the paper is attached, when the paper is pulled out in the opposite direction to the paper feeding direction, the paper can be easily pulled out without breaking.

(へ)実施例 第1図および第5図は本発明の一実施例を示す断面図お
よび要部斜視図である。なお、従来装置(第2図)と同
一部分には同一の符号を付し説明は省略する。
(F) Embodiment FIGS. 1 and 5 are a sectional view and a perspective view of essential parts showing an embodiment of the present invention. Note that the same parts as those in the conventional device (FIG. 2) are given the same reference numerals and explanations will be omitted.

これらの図において、積載されている用紙(2)・・・
の下流側端縁よりも下流側には、給紙ローラ(3)に圧
接されるウレタンゴム製の摩擦ローラ(9)が設けられ
ている。この摩擦ローラ(9)は、支軸CIQを支点と
して揺動し得るアングルUに固設されている保持軸fi
3に、一方向クラッチとしてのばねクラッチ0を介して
装着されている。従って、前記摩擦ローラ(9)は給紙
方向(入方向)への回転が禁止され。
In these figures, the loaded paper (2)...
A friction roller (9) made of urethane rubber that is pressed against the paper feed roller (3) is provided downstream of the downstream edge of the paper feed roller (3). This friction roller (9) is attached to a holding shaft fi fixed to an angle U that can swing around a supporting shaft CIQ.
3 through a spring clutch 0 as a one-way clutch. Therefore, the friction roller (9) is prohibited from rotating in the paper feeding direction (input direction).

反対方向(B方向)への回転のみが許容されることにな
る。
Only rotation in the opposite direction (direction B) will be permitted.

α4は1曲記アングル(111を、支軸θQを中心とし
て反時計方向に回転付勢する引張ばねであり、 (15
1は前記支軸α〔に回転自在に装着されているガイド板
である。また、(1eは前記ガイド板a51を時計方向
に回転付勢する圧縮ばねである。
α4 is a tension spring that urges the first angle (111) to rotate in the counterclockwise direction around the support shaft θQ, (15
Reference numeral 1 denotes a guide plate rotatably mounted on the support shaft α. Further, (1e is a compression spring that urges the guide plate a51 to rotate clockwise.

前記摩擦ローラ(9)、支軸a〔、ガイド板αSそして
引張ばね(14等はユニット化され、1個の保持金具卸
に組み込まれており、この保持金具ηηは、これに設け
られた固定用長孔tisuおよびねじ(図示せず)にて
装置本体(複写機等)に固定される。
The friction roller (9), the support shaft a, the guide plate αS, and the tension spring (14, etc.) are unitized and incorporated into one holding fitting, and this holding fitting ηη It is fixed to the main body of the apparatus (copying machine, etc.) with a long hole and screws (not shown).

このFil!施例において、給紙ローラ(3)が反時計
方向(入方向)に回転すると、最上部の用紙(2a)は
、給紙方向(入方向)へ移送されるが、この際前記摩擦
ローラ(9)はばねクラッチi1りにて時計方向(給紙
方向と反対方向)への回転が禁止されているので、2枚
目以下の用紙(2)・・・はその前進を阻止される。従
って、前記最上部の用紙(2a)のみが分離されて、給
紙方向(入方向)へ移送される。
This Fil! In the embodiment, when the paper feed roller (3) rotates counterclockwise (input direction), the uppermost paper (2a) is transferred in the paper feed direction (input direction), but at this time, the friction roller ( 9) is prohibited from rotating clockwise (in the direction opposite to the paper feeding direction) by the spring clutch i1, so that the second and subsequent sheets (2) are prevented from moving forward. Therefore, only the uppermost sheet (2a) is separated and transported in the sheet feeding direction (input direction).

そして、何らかの原因で、@起用紙(2a)が、給紙ロ
ーラ(3)と摩擦ローラ(9)によって挾持されている
状態で、装置が停止した場合、この用紙(2a)を給紙
方向と反対方向(B方向)へ引き出せば、@記摩擦ロー
ラ(9)が反時計方向(B方向)に回転する。従って、
この用紙(2a)は給紙方向と反対方向CB方向)へ容
易に引き出される。
If the device stops for some reason while the paper (2a) is being held between the paper feed roller (3) and the friction roller (9), this paper (2a) is moved in the paper feed direction. When pulled out in the opposite direction (direction B), the friction roller (9) rotates counterclockwise (direction B). Therefore,
This paper (2a) is easily pulled out in the opposite direction to the paper feeding direction (CB direction).

第4図は、本実施例の給紙装置が2基装着された複写機
の部分断面図である。この図において。
FIG. 4 is a partial sectional view of a copying machine equipped with two paper feeding devices of this embodiment. In this figure.

G9■は用紙(2)・・・が積載された給紙台(llf
llf:前記給紙ローラ(3)(3)K向けて押し上げ
るばねであり、■■は給紙ローラ(3)(3)の下流側
に設けられているレジスタローラ対である。
G9■ is a paper feed tray (llf) loaded with paper (2)...
llf: A spring that pushes up the paper feed rollers (3) (3)K, and ■■ is a pair of register rollers provided on the downstream side of the paper feed rollers (3) (3).

(ト1 発明の効果 本発明では、給紙ローラに圧接されている用紙分離用の
摩擦ローラに、給紙方向への回転を禁止し、給紙方向と
反対方向への回転を許容する手段が装着されているので
、用紙を給紙方向と反対方向へ引き出すと、前記摩擦ロ
ーラが反給紙方向に回転し、この用紙を容易に引き出す
ことができる。従って、用紙が破断したり、装置が故障
することはな−。
(G1 Effects of the Invention In the present invention, the friction roller for paper separation that is in pressure contact with the paper feed roller is provided with means for prohibiting rotation in the paper feeding direction and allowing rotation in the opposite direction to the paper feeding direction. Since the paper is attached, when the paper is pulled out in the opposite direction to the paper feeding direction, the friction roller rotates in the opposite direction and the paper can be easily pulled out. It won't break down.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例を示す断面図、第2図は従来
装置を示す断面図、第5図は本発明の一実施例の要部を
示す斜視図、第4図は応用例を示す部分断面図である。 (1)・・・給紙台、(2)・・・積載されている用紙
。 (2a)・・・最上部の用紙、(3)・・・給紙ローラ
。 (9)・・・摩擦ローラ% a3・・・保持軸、031
・・・ばねクラッチ(一方向クラッチ)。
Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a sectional view showing a conventional device, Fig. 5 is a perspective view showing main parts of an embodiment of the invention, and Fig. 4 is an applied example. FIG. (1)... Paper feed tray, (2)... Loaded paper. (2a)...Top paper, (3)...Paper feed roller. (9)...Friction roller% a3...Holding shaft, 031
...Spring clutch (one-way clutch).

Claims (1)

【特許請求の範囲】 1、用紙が積載される給紙台と、この給紙台の給紙方向
に沿って下流側端縁近傍の上部に設けられ、最上部の用
紙に圧接される給紙ローラと、積載されている用紙の下
流側端縁よりも下流側にて前記給紙ローラに圧接され、
給紙時に用紙を1枚づつ分離する摩擦ローラと、この摩
擦ローラの、給紙方向への回転を禁止し、給紙方向と反
対方向への回転のみを許容する手段とが具備されている
給紙装置。 2、摩擦ローラの、給紙方向への回転を禁止し、給紙方
向と反対方向への回転のみを許容する手段が、前記摩擦
ローラの保持軸に設けられている一方向クラッチである
特許請求の範囲第1項記載の給紙装置。
[Claims] 1. A paper feed table on which paper is stacked, and a paper feed provided at the upper part near the downstream edge of the paper feed table along the paper feeding direction and pressed against the topmost paper. the roller and the paper feed roller on the downstream side of the downstream edge of the stacked paper;
A feeder equipped with a friction roller that separates sheets one by one during paper feeding, and a means for prohibiting rotation of this friction roller in the paper feeding direction and only allowing rotation in the opposite direction to the paper feeding direction. paper equipment. 2. A patent claim in which the means for prohibiting rotation of the friction roller in the paper feeding direction and only allowing rotation in the opposite direction to the paper feeding direction is a one-way clutch provided on the holding shaft of the friction roller. The paper feeding device according to item 1.
JP780985A 1985-01-18 1985-01-18 Paper feeding device Pending JPS61166446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP780985A JPS61166446A (en) 1985-01-18 1985-01-18 Paper feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP780985A JPS61166446A (en) 1985-01-18 1985-01-18 Paper feeding device

Publications (1)

Publication Number Publication Date
JPS61166446A true JPS61166446A (en) 1986-07-28

Family

ID=11675935

Family Applications (1)

Application Number Title Priority Date Filing Date
JP780985A Pending JPS61166446A (en) 1985-01-18 1985-01-18 Paper feeding device

Country Status (1)

Country Link
JP (1) JPS61166446A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5318287A (en) * 1991-09-11 1994-06-07 Konica Corporation Bypass sheet feeding device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5617384U (en) * 1979-07-18 1981-02-16
JPS5647837B2 (en) * 1977-06-14 1981-11-12
JPS5725314U (en) * 1980-07-21 1982-02-09
JPS5816729B2 (en) * 1978-12-12 1983-04-01 富士通株式会社 Method for forming marks for measuring dimensional behavior of prepreg

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5647837B2 (en) * 1977-06-14 1981-11-12
JPS5816729B2 (en) * 1978-12-12 1983-04-01 富士通株式会社 Method for forming marks for measuring dimensional behavior of prepreg
JPS5617384U (en) * 1979-07-18 1981-02-16
JPS5725314U (en) * 1980-07-21 1982-02-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5318287A (en) * 1991-09-11 1994-06-07 Konica Corporation Bypass sheet feeding device

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