JPH037578B2 - - Google Patents
Info
- Publication number
- JPH037578B2 JPH037578B2 JP58197342A JP19734283A JPH037578B2 JP H037578 B2 JPH037578 B2 JP H037578B2 JP 58197342 A JP58197342 A JP 58197342A JP 19734283 A JP19734283 A JP 19734283A JP H037578 B2 JPH037578 B2 JP H037578B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- cassette
- recording paper
- paper feeding
- recording
- 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.)
- Expired - Lifetime
Links
- 210000000078 claw Anatomy 0.000 claims description 25
- 238000000926 separation method Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/26—Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile
- B65H1/266—Support fully or partially removable from the handling machine, e.g. cassette, drawer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/04—Supports or magazines for piles from which articles are to be separated adapted to support articles substantially horizontally, e.g. for separation from top of pile
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は複写機・フアクシミリ・コンピユータ
出力によるプリンタ等の各種画像記録装置や印刷
機等において、多数枚の複写・記録・印刷に供せ
られる用紙を積層状に収納するカセツトから、該
シートを１枚ずつ取り出して給送する給紙装置に
関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to various image recording devices and printing machines such as copying machines, facsimiles, and computer output printers for copying, recording, and printing a large number of sheets. The present invention relates to a paper feeding device that takes out and feeds sheets one by one from a cassette that stores sheets in a stacked manner.
（従来技術）
以下、本発明の内容を理解しやすくするため
に、電子写真複写機を例にとり説明を行なう。(Prior Art) In order to make it easier to understand the content of the present invention, an explanation will be given below using an electrophotographic copying machine as an example.
複写機に対する記録紙（転写紙、感光紙）の交
換方式として、サイズ・紙質等種類の異なる記録
紙を予め各種類別にカセツトに収納しておき、所
要の記録紙を収納したカセツトを複写機のカセツ
ト受に装填して、該記録紙を複写機側の記録紙送
り出しローラ又はベルトで複写機体内の画像形成
位置へ給紙するカセツト方式給紙装置は、記録紙
交換操作上便利であり、広く採用されている。 As a method of replacing recording paper (transfer paper, photosensitive paper) for a copying machine, recording papers of different sizes and paper qualities are stored in cassettes for each type in advance, and the cassette containing the required recording paper is inserted into the copying machine. The cassette-type paper feeding device, in which the recording paper is loaded into the cassette receiver and fed to the image forming position inside the copying machine using the recording paper feed roller or belt on the copying machine side, is convenient for recording paper replacement operations and is widely used. It has been adopted.
上記のカセツト方式給紙においては、記録紙の
ノーフイードやダブルフイードを生ぜず安定性・
確実性を確保した種々の給紙方式が考えられてい
る。これらのうち分離爪方式は装置の構造が簡単
なことを特徴とし一般に多用されていて、特開昭
54−90761号公報のほか数多くの出願がなされて
いる。 In the above-mentioned cassette method of paper feeding, no feed or double feed of the recording paper occurs, and stability and
Various paper feeding systems that ensure reliability have been considered. Among these, the separation claw method is characterized by a simple device structure and is commonly used.
In addition to Publication No. 54-90761, numerous applications have been filed.
第１図は従来の給紙装置の一例を示す断面図で
あり、第２図はその正面図である。 FIG. 1 is a sectional view showing an example of a conventional paper feeding device, and FIG. 2 is a front view thereof.
複写機本体に対して着脱自在なカセツト１の本
体箱２の内部には上下動自在な記録紙載置用受板
３が設けられている。この受板３はその上面に記
録紙Ｐを堆積載置し後端の折曲部３Ａは前記本体
箱２の開口部に挿入され揺動自在になつている。
記録紙Ｐをセツトしたカセツト１を複写機本体の
カセツト受台１０に装填することによつて、複写
機本体側の給紙装置の回転支軸１１を中心に揺動
可能なはね上げレバー１２が前記受板３の下面に
当接し、且つばね圧によつて上方に押し上げ傾向
に支持される。また複写機本体に設けられたゴム
ローラ等より成る送り出しローラ１３は前記記録
紙Ｐの上面の幅方向の中央において弾性的に当接
する。１４は送り出しローラ１３の駆動軸であつ
てその位置は固定されている。よつて記録紙Ｐは
下面ははね上げレバー１２に接して押し上げら
れ、最上面は送り出しローラ１３の周面に所定の
圧力で当接している。この状態で送り出しローラ
１３を矢印で示す方向に回転駆動することによ
り、送り出しローラ１３と記録紙間の摩擦力を利
用して、複写紙Ｐの最上位置の記録紙１枚をその
延長方向に送り出す。カセツト１内より送り出さ
れた１枚の記録紙はガイド板１５、レジストロー
ラ１６の方向へ給送され、更に画像形成部（不図
示）へと送られる。 Inside a main body box 2 of a cassette 1 which can be freely attached to and detached from the copying machine main body, there is provided a vertically movable receiving plate 3 for placing recording paper. The recording paper P is piled up on the upper surface of the receiving plate 3, and the bent portion 3A at the rear end is inserted into the opening of the main body box 2 so as to be swingable.
By loading the cassette 1 containing the recording paper P into the cassette holder 10 of the copying machine main body, the flip-up lever 12, which can swing around the rotational shaft 11 of the paper feed device on the copying machine main body side, moves to the above-mentioned position. It comes into contact with the lower surface of the receiving plate 3, and is supported in an upwardly pushing manner by the spring pressure. Further, a feed roller 13 made of a rubber roller or the like provided on the main body of the copying machine elastically contacts the upper surface of the recording paper P at the center in the width direction. Reference numeral 14 is a drive shaft for the feed roller 13, and its position is fixed. Therefore, the lower surface of the recording paper P contacts the flip-up lever 12 and is pushed up, and the uppermost surface contacts the circumferential surface of the feed roller 13 with a predetermined pressure. In this state, by rotationally driving the feed roller 13 in the direction shown by the arrow, the topmost recording paper of the copy paper P is sent out in the direction of extension by utilizing the frictional force between the feed roller 13 and the recording paper. . A sheet of recording paper fed out from inside the cassette 1 is fed in the direction of a guide plate 15 and registration rollers 16, and further sent to an image forming section (not shown).
以上の如き給紙装置においては、記録紙相互間
の摩擦力、あるいは先行して送り出された記録紙
との摺動により生じた静電引力等のために、堆積
上の記録紙の最上位置の記録紙のみならず２枚目
又はこれに続く記録紙が重なつて送り出される、
いわゆる多数枚送りが生ずる可能性が大きい。そ
してこのように複数枚の記録紙が同時に送り出さ
れたときには、紙が無駄に消費されるばかりでな
く複写機本体内において紙詰りが発生する原因と
もなる。 In the above-described paper feeding device, the topmost position of the recording paper on the stack is affected by the frictional force between the recording papers or the electrostatic attraction generated by sliding with the previously fed recording paper. Not only the recording paper but also the second or subsequent recording paper are fed out in an overlapping manner.
There is a high possibility that so-called multi-sheet feeding will occur. When a plurality of sheets of recording paper are sent out at the same time in this way, not only is the paper wasted, but it also causes paper jams to occur within the main body of the copying machine.
以上の如き記録紙の多数枚送りを防止するた
め、従来の給紙装置においては、例えばカセツト
１の前端縁両側端部に、通常分離爪と称される紙
さばき部材４，４をそれぞれ設けている。この紙
さばき部材４は、記録紙の進行方向前方に位置す
る前方部分４Ａと、記録紙の上面の両端を蔽う上
方部分４Ｂと、これら４Ａ，４Ｂと一体をなすア
ーム状支持部４Ｃとから成る。この支持部４Ｃの
他端は、カセツト１の本体箱２の側壁の回転軸５
の周りに回動自在に枢支され、回動自在になつて
いる。よつて紙さばき部材４の上方部分４Ｂは、
自重又は弾性力により記録紙の上面を押える。
尚、６はさばき部材４の側面を摺動可能に支持し
本体箱２の両側面内面に固定された仕切板であ
る。 In order to prevent the feeding of multiple sheets of recording paper as described above, in conventional paper feeding devices, paper handling members 4, usually called separation claws, are provided at both ends of the front edge of the cassette 1, respectively. There is. This paper handling member 4 consists of a front portion 4A located at the front in the traveling direction of the recording paper, an upper portion 4B that covers both ends of the upper surface of the recording paper, and an arm-shaped support portion 4C that is integrated with these 4A and 4B. . The other end of this support portion 4C is connected to the rotation shaft 5 of the side wall of the main box 2 of the cassette 1.
It is rotatably supported around the , making it rotatable. Therefore, the upper portion 4B of the paper handling member 4 is
Press the top surface of the recording paper using its own weight or elastic force.
Incidentally, reference numeral 6 denotes a partition plate that slidably supports the side surface of the separating member 4 and is fixed to the inner surface of both side surfaces of the main body box 2.
斯かる紙さばき部材４，４を有する給紙装置に
おける給紙状況を第３図を用いて説明する。送り
出しローラ１３が矢印方向に駆動されると、摩擦
力により最上位置の記録紙P1が矢印方向（第３
図で右方）に前進せしめられるが、その両端部は
それぞれ紙さばき部材４の前方部分４Ａに当接し
て一時的に停止せしめられ、しかも当該端部の上
面は上方部分４Ｂに軽く押えられているため、第
３図Ｂ，Ｃに示すように、記録紙の前記両端部に
続く部分が上方に湾曲してループ状になり、この
変形によつて記録紙が紙さばき部材４から引き出
されると共に、記録紙が復元して紙さばき部材４
上にはじかれるように乗ることになる。そして送
り出しローラ１３により複数枚の記録紙が送り出
されるようなときには、２枚目以後の記録紙は自
由に上方に湾曲することができないため、結局記
録紙がさばかれて最上位置の記録紙のみが紙さば
き部材４を越えることができ、斯くして多数枚送
りが防止される。 The paper feeding situation in a paper feeding device having such paper handling members 4, 4 will be explained with reference to FIG. When the feed roller 13 is driven in the direction of the arrow, the frictional force causes the recording paper P 1 in the uppermost position to move in the direction of the arrow (third
(to the right in the figure), but both ends of the paper handling member 4 come into contact with the front part 4A of the paper handling member 4 and are temporarily stopped, and the upper surface of the end part is lightly pressed by the upper part 4B. As a result, as shown in FIGS. 3B and 3C, the portions of the recording paper that follow the above-mentioned ends curve upward to form a loop, and as a result of this deformation, the recording paper is pulled out from the paper handling member 4 and , the recording paper is restored and the paper handling member 4
You will ride it as if you are being repelled upwards. When a plurality of sheets of recording paper are sent out by the feed roller 13, the second and subsequent sheets of recording paper cannot freely curve upward, so the recording sheets are eventually spread and only the topmost recording paper is left. It can pass over the paper handling member 4, thus preventing multiple sheet feeding.
しかしながら斯かる従来の給紙装置では、紙さ
ばき部材４がカセツト１の本体箱２の前端縁両側
端部に回動自在に取付けられているから、カセツ
トへの記録紙の補充装填に際して、この紙さばき
部材４が邪魔となるから、該紙さばき部材４を手
で回動して退避せしめて、紙補充を行なつた後に
再び紙さばき部材４を原状に復帰せしめるか、あ
るいは紙さばき部材４の上方部分４Ｂを避けるよ
うにして紙補充を行なわれなければならない。何
れにしても紙の装填が煩雑である。更にこのよう
な給紙装置では、紙さばき部材の復帰操作忘れに
よる紙さばき部材や複写機本体の破損や操作者の
怪我を生ずることがあり、また記録紙の両端折れ
曲りや皺等を起させる欠点がある。 However, in such a conventional paper feeding device, since the paper handling member 4 is rotatably attached to both ends of the front edge of the main box 2 of the cassette 1, when reloading recording paper into the cassette, the paper handling member 4 is Since the paper separating member 4 becomes a hindrance, it is necessary to rotate the paper separating member 4 manually and retract it, and then return the paper separating member 4 to its original state after replenishing the paper, or to remove the paper separating member 4 from the Paper must be replenished while avoiding the upper portion 4B. In any case, loading paper is complicated. Furthermore, in such a paper feeding device, forgetting to reset the paper handling member may cause damage to the paper handling member or the copying machine, or injury to the operator, and may also cause the recording paper to be bent or wrinkled at both ends. There are drawbacks.
（発明の目的）
以上述べたような従来のカセツト給紙方式の問
題点に鑑み、本発明はカセツトに内蔵された紙さ
ばき部材（分離爪）に起因する操作上の問題を解
決し、安定・確実な給紙と、操作性に優れ事故発
生のない、かつ簡単で確実性のある機構のカセツ
ト方式給紙装置を提供することを目的とするもの
である。(Object of the Invention) In view of the problems of the conventional paper cassette feeding system as described above, the present invention solves the operational problems caused by the paper handling member (separation claw) built into the cassette, and improves stability and paper feeding. The object of the present invention is to provide a cassette-type paper feeding device that feeds paper reliably, has excellent operability, is accident-free, and has a simple and reliable mechanism.
（発明の構成）
上記目的は、多数枚の紙から分離爪により１枚
ずつ分離して紙送りを行う給紙手段と、多数枚の
紙を載置する紙載置手段と、前記給紙手段と前記
紙載置手段を支持する枠体とからなり、前記紙載
置手段を前記枠体に出入可能にした給紙装置にお
いて、前記紙載置手段の底面に設けた案内カム溝
で分離爪の幅規制を行い、分離爪を紙載置手段の
前端面に沿つて給紙方向と直角方向に平行に移動
させて、常時分離爪を前記紙載置手段の角部に配
置したことを特徴とする給紙装置によつて達成さ
れる。(Structure of the Invention) The above-mentioned object is to provide a paper feeding means for separating and feeding a large number of sheets of paper one by one using a separation claw, a paper loading means for placing a large number of sheets of paper, and a paper feeding means for placing a large number of sheets of paper. and a frame for supporting the paper loading means, and in which the paper loading means can be moved in and out of the frame, wherein a separating claw is provided in a guide cam groove provided on the bottom surface of the paper loading means. The separating claw is moved parallel to the paper feeding direction along the front end surface of the paper loading means in a direction perpendicular to the paper feeding direction, and the separating claw is always disposed at a corner of the paper loading means. This is achieved by a paper feeding device.
（実施例） 以下、本発明の実施例を説明する。(Example) Examples of the present invention will be described below.
第４図および第５図は本発明の給紙装置による
カセツト装填前の状態を示す斜上方からみた斜視
図および平面図である。第６図および第７図はカ
セツト装填後の給紙装置を斜下方および斜上方か
らみた斜視図である。第８Ａ図はその平面図であ
り、第８図Ｂは異なるサイズのカセツトを装填し
た状態の給紙装置の平面図である。これらの図に
おいて第１図および第２図と同一構造部分につい
ては同一符号を付してあるので、これらの同一構
造部分についての重複した説明は省略する。 FIGS. 4 and 5 are a perspective view and a plan view, viewed diagonally from above, showing the paper feeder of the present invention in a state before the cassette is loaded. FIGS. 6 and 7 are perspective views of the paper feeder after the cassette is loaded, as seen from obliquely below and obliquely above. FIG. 8A is a plan view thereof, and FIG. 8B is a plan view of the paper feeding device loaded with cassettes of different sizes. In these figures, the same structural parts as in FIGS. 1 and 2 are denoted by the same reference numerals, so a redundant explanation of these same structural parts will be omitted.
紙さばきユニツト３０Ｌ，３０Ｒは複写機本体
のカセツト受台４０上に設けられ、それぞれ矢印
方向（給紙方向と直角方向）に摺動可能となつて
いて左右対称形をなしている。第４図右方の紙さ
ばきユニツト３０Ｒは、ボス３１Ｒを有するアー
ム３２Ｒと、これと一体に固定された支持板３３
Ｒと、該アーム３２Ｒと支持板３３Ｒを貫通する
支軸３４Ｒに回動自在な分離爪部材３５Ｒとより
構成されている。紙さばきユニツト３０Ｒ全体
は、カセツト受台（枠体）４０のガイド部材（不
図示）によつてカセツト２０の装填方向と直角方
向（矢印方向）に直進移動可能となつている。ま
た前記支持板３３Ｒはコイルスプリング３６Ｒに
よつて外方に引張られ、カセツト受台の一端に設
けられたストツパ４１Ｒによつて停止されてい
る。第４図左方の紙さばきユニツト３０Ｌは前記
３０Ｒと対称形をなし、同じくカセツト受台４０
上にばね付勢されてカセツト２０が装填前には最
外方に停止している。 The paper handling units 30L and 30R are provided on a cassette holder 40 of the main body of the copying machine, are slidable in the direction of the arrow (perpendicular to the paper feeding direction), and are bilaterally symmetrical. The paper handling unit 30R on the right side of FIG. 4 includes an arm 32R having a boss 31R and a support plate 33 integrally fixed thereto.
R, and a separation claw member 35R that is rotatable about a support shaft 34R that passes through the arm 32R and the support plate 33R. The entire paper handling unit 30R can be moved straight in a direction perpendicular to the loading direction of the cassette 20 (in the direction of the arrow) by means of a guide member (not shown) of a cassette holder (frame) 40. The support plate 33R is pulled outward by a coil spring 36R and stopped by a stopper 41R provided at one end of the cassette holder. The paper handling unit 30L on the left side of FIG.
The cassette 20 is biased upward by a spring and is stopped at the outermost position before loading.
一方、カセツト２０の本体箱２１の底面には第
５図、第６図および第８図に示すように溝形状を
なすカム面２２Ｒ，２２Ｌが形成されている。こ
のカム面２２Ｒ，２２Ｌには、それぞれ前記ボス
３１Ｒ，３１Ｌが摺接可能である。カム面２２
Ｒ，２２Ｌのボス３１Ｒ摺接面はカセツトの本体
箱２１の側面となす角度をθ1とする。 On the other hand, groove-shaped cam surfaces 22R and 22L are formed on the bottom surface of the main body box 21 of the cassette 20, as shown in FIGS. 5, 6, and 8. The bosses 31R and 31L can slide into contact with the cam surfaces 22R and 22L, respectively. Cam surface 22
The sliding contact surface of the boss 31R of R, 22L makes an angle of θ 1 with the side surface of the main body box 21 of the cassette.
次に、第５図および第８図の右方に示すカセツ
トは、より大きな横幅を有する記録紙を収納する
大形カセツト５０である。該カセツト５０の本体
箱５１の底面にも溝形状をなすカム面５２Ｒ，５
２Ｌが形成されている。このカム面５２Ｒ，５２
Ｌが前記ボス３１Ｒ，３１Ｌと摺接する面の本体
箱５１の側面となす角度をθ2とすると、θ1＞θ2と
なるようカム面が形成される。 Next, the cassette shown on the right side of FIGS. 5 and 8 is a large cassette 50 that stores recording paper having a larger width. The bottom surface of the main body box 51 of the cassette 50 also has groove-shaped cam surfaces 52R, 5.
2L is formed. This cam surface 52R, 52
If θ 2 is the angle between the surface of L that makes sliding contact with the bosses 31R and 31L and the side surface of the main body box 51, the cam surface is formed such that θ 1 >θ 2 .
次にカセツト装填と紙さばきユニツトの連動動
作について第５図および第８図を用いて説明す
る。 Next, the interlocking operation of cassette loading and paper handling unit will be explained with reference to FIGS. 5 and 8.
カセツト２０をカセツト受台上で図の左方に移
動して複写機本体に装填すると、ボス３１Ｒ，３
１Ｌは先ずカセツト２０の本体箱２１の底面に形
成されたカム面２２Ｒ，２２Ｌに当接し（P1
点）、次いで傾斜角θ1をなすカム面に沿つて移動
させられる。第５図に示す一点鎖線はボス３１
Ｒ，３１Ｌの中心の移動軌跡である。 When the cassette 20 is moved to the left in the figure on the cassette holder and loaded into the main body of the copying machine, the bosses 31R, 3
1L first comes into contact with cam surfaces 22R and 22L formed on the bottom of the main box 21 of the cassette 20 (P 1
point), then moved along a cam surface making an inclination angle θ 1 . The dashed line shown in Fig. 5 is the boss 31.
This is the locus of movement of the center of R and 31L.
カセツト２０の装填する移動過程において、紙
さばきユニツト３０Ｒ，３０Ｌのボス３１Ｒ，３
１Ｌが上記のようにカム面２２Ｒ，２２Ｌに沿つ
て移動することによつて、ボスと一体をなすアー
ム３２Ｒ，３２Ｌは、コイルスプリング３６Ｒ，
３６Ｌに抗して、カセツト装填方向と直角方向に
内側に向つて移動し、図の二点鎖線で示す方向へ
移動する。これによつてアーム３２Ｒ，３２Ｌに
軸着された分離爪部材３５Ｒ，３５Ｌはアームの
移動方向と同方向に移動する。 During the moving process of loading the cassette 20, the bosses 31R, 3 of the paper handling units 30R, 30L
As 1L moves along the cam surfaces 22R and 22L as described above, the arms 32R and 32L that are integral with the boss are moved by the coil springs 36R and 32L.
36L, moves inward in a direction perpendicular to the cassette loading direction, and moves in the direction shown by the two-dot chain line in the figure. As a result, the separation claw members 35R, 35L pivotally attached to the arms 32R, 32L move in the same direction as the movement direction of the arms.
第８図Ａはカセツト装填完了位置でのカセツト
２０と紙さばき部材３０Ｒ，３０Ｌの関連を示す
平面図であり、分離爪部材３５Ｒ，３５Ｌは本体
箱２１の前端縁両側端部に到達する。 FIG. 8A is a plan view showing the relationship between the cassette 20 and the paper handling members 30R and 30L at the cassette loading completion position, and the separation claw members 35R and 35L reach both ends of the front edge of the main box 21.
同様に、大形カセツト５０を使用する場合に
は、ボス３１Ｒ，３１Ｌはカム面５２Ｒ，５２Ｌ
に沿つてQ1−Q2の軌跡を通過する。そして上述
と同様に分離爪部材３５Ｒ，３５Ｌは移動せしめ
られて、カセツト５０の本体箱５１の前端縁両側
端部に保持される。このときボツクス３５Ｒ，３
５Ｌの移動距離は勿論、小形カセツト２０の場合
より小さい。 Similarly, when using the large cassette 50, the bosses 31R and 31L are connected to the cam surfaces 52R and 52L.
along the trajectory of Q 1 −Q 2 . Then, in the same manner as described above, the separation claw members 35R and 35L are moved and held at both ends of the front edge of the main body box 51 of the cassette 50. At this time, BOX 35R, 3
The moving distance of 5L is of course smaller than that of the small cassette 20.
以上述べたように、異なるサイズのカセツト毎
に、その底面にカムをそれぞれ形成させ、複写機
本体側に該カム面により追随連動する紙さばき部
材を設けることにより、カセツト装填完了時に分
離爪部材を常にカセツトの前端縁両側端部の一定
位置を保持させることができる。またカセツトを
取り出せばこれと連動して分離爪部材はカセツト
外に退避する。 As described above, by forming a cam on the bottom surface of each cassette of different size and providing a paper handling member that follows and interlocks with the cam surface on the copying machine main body side, the separation claw member is activated when the cassette is loaded. It is possible to always maintain a constant position on both sides of the front edge of the cassette. Further, when the cassette is removed, the separation claw member is retracted out of the cassette in conjunction with this.
また分離爪部材３５Ｒ，３５Ｌは支軸３４Ｒ，
３４Ｌをそれぞれ中心にして垂直面内で回動可能
に取り付けられているから、カセツトを装填して
はね上げレバー１２が作動すると、受板３上の記
録紙の最上位の記録紙先端隅角部を自重により押
える。 Further, the separation claw members 35R, 35L are attached to the support shaft 34R,
34L as the center, so that when a cassette is loaded and the flip-up lever 12 is operated, the leading edge corner of the uppermost recording paper on the receiving plate 3 is lifted. Press down with your own weight.
他の実施例として、カセツトにカム面を設け
ず、カセツトのサイズを検知手段により検知し、
その出力信号により分離爪部材を移動せしめる構
造にすることも可能である。 As another embodiment, the cassette is not provided with a cam surface, and the size of the cassette is detected by a detection means,
It is also possible to adopt a structure in which the separation claw member is moved by the output signal.
更に他の実施例として、給紙トレー形式にも、
本発明の紙さばき部材を複写機側に設ける構造を
適用することは容易である。 Furthermore, as another example, in the paper feed tray format,
It is easy to apply the structure in which the paper handling member of the present invention is provided on the copying machine side.
（発明の効果）
以上述べたように本発明は、カセツト底に設け
た案内カム溝によつてカセツトの給紙位置の両コ
ーナを分離爪を位置決めするから、カセツトの大
きさに適合して確実に位置決めが可能であり、か
つ、分離爪の移動が給紙方向に直角に移動するの
で、一枚給紙が正確に行える。従つて、記録紙の
耳折れ、まくれ、しわが防止され、また、分離爪
の操作ミスによる複写機本体の損傷の発生も防止
することができる。(Effects of the Invention) As described above, the present invention positions the separating claws at both corners of the paper feeding position of the cassette by means of the guide cam groove provided at the bottom of the cassette, so that the separating claws can be reliably adapted to the size of the cassette. Since the separating claw moves at right angles to the paper feeding direction, single sheet feeding can be performed accurately. Therefore, it is possible to prevent the edges of the recording paper from folding, curling up, and wrinkles, and also to prevent damage to the main body of the copying machine due to incorrect operation of the separation claw.
第１図および第２図は従来の給紙装置の一例を
示す断面図および正面図、第３図は給紙過程を説
明する図、第４図および第５図は本発明の給紙装
置によるカセツト装填前の状態を示す斜視図およ
び平面図、第６図および第７図はカセツト装填後
の分離爪係合状態を示す斜視図、第８Ａ，Ｂはサ
イズの異なるカセツトを装填したときの給紙装置
の係合状態を説明する平面図である。
１，２０，５０…カセツト、２，２１…本体
箱、３…記録紙受板、４…紙さばき部材、１０，
４０…カセツト受台、２２Ｒ，２２Ｌ，５２Ｒ，
５２Ｌ…カム面、３０Ｒ，３０Ｌ…紙さばきユニ
ツト、３１Ｒ，３１Ｌ…ボス、３２Ｒ，３２Ｌ…
アーム、３５Ｒ，３５Ｌ…分離爪部材、４０…カ
セツト受台。
1 and 2 are a sectional view and a front view showing an example of a conventional paper feeding device, FIG. 3 is a diagram explaining the paper feeding process, and FIG. 4 and 5 are diagrams showing a paper feeding device according to the present invention. A perspective view and a plan view showing the state before the cassette is loaded, FIGS. 6 and 7 are perspective views showing the engagement state of the separation claw after the cassette is loaded, and 8A and B show the state in which cassettes of different sizes are loaded. FIG. 3 is a plan view illustrating an engaged state of the paper device. 1, 20, 50...cassette, 2,21...main box, 3...recording paper receiving plate, 4...paper handling member, 10,
40...Cassette holder, 22R, 22L, 52R,
52L...Cam surface, 30R, 30L...Paper handling unit, 31R, 31L...Boss, 32R, 32L...
Arm, 35R, 35L...separation claw member, 40...cassette holder.
Claims (1)
て紙送りを行う給紙手段と、多数枚の紙を載置す
る紙載置手段と、前記給紙手段と前記紙載置手段
を支持する枠体とからなり、前記紙載置手段を前
記枠体に出入可能にした給紙装置において、前記
紙載置手段の底面に設けた案内カム溝で分離爪の
幅規制を行い、分離爪を紙載置手段の前端面に沿
つて給紙方向と直角方向に平行に移動させて、常
時分離爪を前記紙載置手段の角部に配置したこと
を特徴とする給紙装置。1. A paper feeding means for separating and feeding a large number of sheets of paper one by one using a separating claw, a paper mounting means for placing a large number of papers, and supporting the paper feeding means and the paper mounting means. In the paper feeding device, the width of the separation claw is regulated by a guide cam groove provided on the bottom surface of the paper placement means, and the width of the separation claw is A paper feeding device, characterized in that the separating claw is constantly disposed at a corner of the paper mounting means by moving parallel to the front end surface of the paper mounting means in a direction perpendicular to the paper feeding direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58197342A JPS6093050A (en) | 1983-10-21 | 1983-10-21 | Paper feed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58197342A JPS6093050A (en) | 1983-10-21 | 1983-10-21 | Paper feed device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6093050A JPS6093050A (en) | 1985-05-24 |
| JPH037578B2 true JPH037578B2 (en) | 1991-02-01 |
Family
ID=16372874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58197342A Granted JPS6093050A (en) | 1983-10-21 | 1983-10-21 | Paper feed device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6093050A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0328031Y2 (en) * | 1986-08-14 | 1991-06-17 | ||
| JPH01166645U (en) * | 1988-05-13 | 1989-11-22 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5724291A (en) * | 1980-07-21 | 1982-02-08 | Tdk Corp | Heat mode photorecording medium |
-
1983
- 1983-10-21 JP JP58197342A patent/JPS6093050A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5724291A (en) * | 1980-07-21 | 1982-02-08 | Tdk Corp | Heat mode photorecording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6093050A (en) | 1985-05-24 |
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