JPS59149244A

JPS59149244A - Paper feeder

Info

Publication number: JPS59149244A
Application number: JP2443283A
Authority: JP
Inventors: Katsuhiko Aisaka; 勝彦逢坂
Original assignee: Sanyo Electric Co Ltd; Sanyo Denki Co Ltd
Current assignee: Sanyo Electric Co Ltd; Sanyo Denki Co Ltd
Priority date: 1983-02-15
Filing date: 1983-02-15
Publication date: 1984-08-27
Also published as: JPH032787B2

Abstract

PURPOSE:To permit the paper sheets having different size to be transported one by one by installing a hook whose top edge is bent in two stages frontward at the top edge of a cassette and installing, at the front upper part of the cassette, a pressing plate whose top edge is turned upward and which turns, having the rear edge as fulcrum. CONSTITUTION:The bent point of the bent part 6' of a pressing plate is attached onto the uppermost position of a sheet body 10, which is pressed by the dead weight of the pressing plate 6. The sheet fed-out in this state by a feeding roller 5 advances with the top edge in the contact state with a separating hook 4, and the part at the slightly back from the top edge part of a sheet 12 is pressed by the bent part 6' of the pressing plate 6, and the sheet is transported forward. Even if a plural number of sheets are transported at a same time, the top edge of the uppermost sheet 12 is advanced in preference to the top edge of the lower sheet 13 by the oblique side part 4a of the separating hook 4, and the lower sheet can be separated certainly by the separating hook 4. For the sheet having a different size, a regulating plate 8 is slided, and the transport for paper sheet is performed in accordance with the size.

Description

【発明の詳細な説明】（イ）産業上の利用分野本発明は、プリンタ、複写機等において、カセットにシ
ートを積層収容し、上記シートを送りｌ」−ラによ、っ
て１枚づつ給送可能な給紙装置に関する。Detailed Description of the Invention (a) Industrial Application Field The present invention is used in printers, copying machines, etc., in which sheets are stacked and stored in a cassette, and the sheets are fed one by one by a l'-ra. The present invention relates to a paper feeding device that can feed paper.

（ロ）　従　来　技　術カセットにシートを積層収容し、上記シートを送りロー
ラによっで１枚づつ給送可能な給紙装置に″おいて、シ
ートの１枚つつの分離は、従来カセット先端の隅部に分
離爪を設けて行なっている。しかし乍ら斯る構造では、
異なるサイズのシートに対しては分離爪がその効果をな
さず、ただ１種のサイズのシートにしか対応できない。(b) Conventional technology In a paper feeding device that stores sheets stacked in a cassette and feeds the sheets one by one using a feed roller, separation of the sheets one by one is conventionally carried out at the tip of the cassette. Separation claws are provided at the corners of the
Separating claws have no effect on sheets of different sizes and can only accommodate sheets of one size.

（ハ）　発　明　の　目　的本発明の目的は、簡単な構造で種々の異なるサイズのシ
ートを確実に１枚づつ給送可能な給紙装置を提供するこ
とである。(C) Object of the Invention An object of the invention is to provide a paper feeding device that has a simple structure and can reliably feed sheets of various different sizes one by one.

（ニ）発明の構成本発明の構成的特徴は、カセットにシートを積層収容し
、上記シー４を送りローラによって１枚つつ給送可能な
給紙装置においで、先端部を前方へ２段に折曲された爪
がカセット先端に立設されると共に、先端部が−Ｌ方へ
折曲され後端を支点として回動する押え板が、その先端
をＪ：２爪に近接させる配置でカセット前方上部に装着
きれた点にある。(d) Structure of the Invention The structural feature of the present invention is that sheets are stacked and stored in a cassette, and the sheets 4 are fed one by one by a feed roller in a paper feeding device, in which the leading end is moved forward in two stages. A bent claw is erected at the tip of the cassette, and a presser plate whose tip is bent in the -L direction and rotates around the rear end is positioned so that its tip is close to the J:2 claw. It is located at the point where it can be fully attached to the upper front part.

（ホ）　実　　　施　　　例第１図および第２図は本発明の−・実施例の給紙装置に
用いられるカセットを示し、（１）はカセット本体、（
２〉は該カセット本体の底部に落し込まれた押−Ｌげ板
で、その後端部の突片（２ａ）（２ｂ）がカセット本体
（１）の底部に遊貫きれ、同突片（２ａ）（２ｂ）を中
心に回動自在であり、後述する規制板の設置位置と対応
する位置に切欠（３）を有する。（４）（４）はカセッ
ト本体（１）先端内側に立設された分離爪で、その先端
部は立設方向に対しである角度で前方へ新曲された斜辺
部（４ａ）と、更にその先端が立設方向に折曲された垂
直部（４ｂ）とからなる。また、両分離爪（４）（４）
は、その立設間隔の中心が送りローラ（５）の幅方向の
中心と一致すると共に、カセット本体（１）先端に向か
ってややカセット本体（１）の左側板（ＩＬ）側に配置
きれている。（６）は押え板で、その後端両側に垂下し
て設けられた両突部（６ａ）（６ｂ）において、カセッ
ト本体（１）の両側板（ＬＬ）（ＩＲ）上部に回動自在
に支持されている。この時、押え板の先端の一部は分離
爪（４）り４）に近接するように配置され、押え板の先
端は分離爪＜４＞（４）の近傍のシート部分を最も強く
押える如く、分離爪（４）（４）から離れるに従って、
カセット本体（１）先端との間隔が広くなっている。ま
た、押え板（６）の先端部には上方への新曲部（６゛）
が設けられていると共に、送りローラ（５）と対向する
位置に切欠（７）が施されている。り８）はカセット本
体（１）に積層収容され、るシートのカセット本体の右
−側板（ＩＲ）側を規制するために、押上げ板の切欠（
３）と対応する位置に配設された規制板である。該規制
板は、断面り字状であり、カセット本体（１）に積層収
容されるシートの幅方向へ摺動自在となるよつに、その
水平部がカセット本体（１）底部に穿たれたスリット状
の孔（９）にビン止めされている。(e) Embodiment FIGS. 1 and 2 show a cassette used in a paper feeding device according to an embodiment of the present invention, (1) shows the cassette body, (
2> is a push-L plate that is sunk into the bottom of the cassette body, and the protruding pieces (2a) and (2b) at the rear end are loosely penetrated into the bottom of the cassette body (1), and the protruding pieces (2a) ) (2b), and has a notch (3) at a position corresponding to the installation position of a regulating plate, which will be described later. (4) (4) is a separating claw installed inside the tip of the cassette body (1), and its tip has an oblique side (4a) bent forward at a certain angle with respect to the upright direction, and It consists of a vertical part (4b) whose tip is bent in the upright direction. Also, both separation claws (4) (4)
The center of the vertical spacing coincides with the widthwise center of the feed roller (5), and the rollers are arranged slightly toward the left side plate (IL) of the cassette body (1) toward the tip of the cassette body (1). There is. (6) is a holding plate, which is rotatably supported on the upper sides of both side plates (LL) and (IR) of the cassette body (1) at both protrusions (6a) and (6b) provided hanging down on both sides of the rear end. has been done. At this time, a part of the tip of the presser plate is placed so as to be close to the separation claw (4) (4), and the tip of the presser plate is placed so as to press the sheet part near the separation claw (4) most strongly. , as it moves away from the separation claws (4) (4),
The distance between the cassette body (1) and the tip is wide. In addition, the tip of the presser plate (6) has a new upward curve (6゛).
A notch (7) is provided at a position facing the feed roller (5). 8) is stacked and accommodated in the cassette body (1), and the push-up plate has a notch (
This is a regulation plate arranged at a position corresponding to 3). The regulating plate has a cross-sectional shape, and its horizontal portion is bored in the bottom of the cassette body (1) so that it can slide freely in the width direction of the sheets stacked and stored in the cassette body (1). It is pinned in a slit-shaped hole (9).

次に、上記カセットを用いた本発明の給紙装置について
、第３図および第４図を参照して説明する。Next, a paper feeding device of the present invention using the above-mentioned cassette will be explained with reference to FIGS. 3 and 4.

押上げ板（２）上に載置きれると共に、規制板（８）に
よって規制されたシート体（１０）は、カセット本体（
１）内に挿通きれた押上げレバー（１１）によって押上
げ板（２）の先端と共に押し上げられ、その最上位が送
りローラ（５）に当接きれている。送り口−ラ（５）を
同装置において右回転させると、シート体（１０）最上
位のシート（１２）は、その先端が分離爪の側辺部（４
ａ）から垂直部（４ｂ）へと接触したまま進み、給紙が
行なわれる。The sheet body (10) placed on the push-up plate (2) and regulated by the regulation plate (8) is placed on the cassette body (
1) The tip of the push-up plate (2) is pushed up together with the tip of the push-up plate (2) by the push-up lever (11) completely inserted into the inside, and the uppermost part of the push-up plate (2) is brought into contact with the feed roller (5). When the feeding port (5) is rotated clockwise in the same device, the uppermost sheet (12) of the sheet body (10) will have its tip end at the side part (4) of the separation claw.
The paper advances from a) to the vertical portion (4b) while remaining in contact with the paper, and paper feeding is performed.

更に、本発明の給紙装置において、シート分離動作をよ
り詳しく説明する。Furthermore, the sheet separation operation in the paper feeding device of the present invention will be explained in more detail.

シー）・体（ｌＯ）の最上位には押え板の折曲部（６′
）の折曲点が当接し、押χ板（６）の自重にてシート体
（１０）を押圧している。この状態で送りローラ（５）
にて送り出きれたシートは、その先端を分離爪（４）に
接触したまま進み、その後上方へ向かわんとするが、押
え板の折曲部（６°）にてシート（１２）先端部のやや
後方が押えられるため、シート（１２）は上方へ向かう
ことなく、前方へ給送きれる。即ち、送りローラ（５）
によって送り出されたシート（１２）は押え板の新曲部
（６゛）に押えられた状態で、その裏面が分離爪り４）
の最先端と接触して給紙される。The bending part (6') of the presser plate is located at the top of the
) are in contact with each other, and the sheet body (10) is pressed by the weight of the pressing board (6). In this state, feed roller (5)
The sheet that has been completely fed out advances with its leading edge in contact with the separating claw (4), and then attempts to move upward, but the leading edge of the sheet (12) is separated at the bend (6°) of the presser plate. Since the slightly rearward portion of the sheet (12) is pressed down, the sheet (12) can be completely fed forward without moving upward. That is, the feed roller (5)
The sheet (12) fed out is pressed by the new curved part (6゛) of the presser plate, and its back side is separated by the separation claw 4).
The paper is fed by contacting the leading edge of the paper.

もし、送りローラ（５）によって複数枚のシートが同時
に送られても、分離爪の斜辺部（４ａ）で最上位のシー
ト（１２）の先端が下位のシート（１３）の先端よりも
先行して進み、最上位のシート（１２）の裏面が分離爪
（４）の最先端に接触して給送されるため、下位のシー
ト（１３）は分離爪（４）によって確実に分離きれる。Even if multiple sheets are fed simultaneously by the feed roller (5), if the leading edge of the uppermost sheet (12) precedes the leading edge of the lower sheet (13) at the oblique side (4a) of the separating claw. Since the back surface of the uppermost sheet (12) contacts the leading edge of the separating claw (4) and is fed, the lower sheet (13) can be reliably separated by the separating claw (4).

また、異なるサイズのシートに対しては規制板（８）を
摺動しソートのサイズに合わせることによって、上述と
同様に給紙を行なうことができる。Further, sheets of different sizes can be fed in the same manner as described above by sliding the regulating plate (8) to match the size to be sorted.

なお、分離爪の斜辺部（４ａ）は、分離爪（４）の立設
方向に対して１５°〜４５°の角度で前方へ新曲される
のが好ましく、また押え板の折曲部（６′）は、給送す
べきシートを確実に前方へ案内するように、押え板（６
）に対して５°〜１５°の角度で折曲されるのが好適で
ある。The oblique side (4a) of the separating claw is preferably bent forward at an angle of 15° to 45° with respect to the upright direction of the separating claw (4), and the bent part (6) of the holding plate is bent forward. ') is attached to the presser plate (6) so as to reliably guide the sheet to be fed forward.
) is preferably bent at an angle of 5° to 15°.

（へ）発明の効果本発明によれば、簡単な構造で、種々のサイズのシート
を確実に１枚つつ給紙できる。(f) Effects of the Invention According to the present invention, sheets of various sizes can be reliably fed one by one with a simple structure.

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

第１図は本発明の一実施例である給紙装置のカセットを
示す上面図、第２図はその要部断面図、第３図は本発明
の一実施例である給紙装置を示す要部断面図、第４図は
その要部拡大断面図である。（１）　　カセット本体、（４）（４）・・・分離爪、
（６）・・・押え板、り８）・・・規制板。Fig. 1 is a top view showing a cassette of a paper feeding device which is an embodiment of the present invention, Fig. 2 is a sectional view of the main part thereof, and Fig. 3 is a main view showing a cassette of a paper feeding device which is an embodiment of the present invention. A partial sectional view, and FIG. 4 is an enlarged sectional view of the main part. (1) Cassette body, (4) (4)...separation claw,
(6)...Pressure plate, ri8)...Regulation plate.

Claims

【特許請求の範囲】[Claims]

く１）カセットにシートを積層収容し、上記シートを送
り［１−ラによって１枚づつ給送可能な給紙装置におい
て、先端部を前方へ２段に新曲された爪がカセット先端
に立設されると共に、先端部が−に方／＼折曲され後端
を支点として回動する押え板が、その先端を上記爪に近
接きせる配置でカセ・ン１〜前方北部に装着きれたこと
を特徴とする給紙装置。1) Store the sheets in a stack in a cassette and feed the sheets [1-In a paper feeder that can feed sheets one by one with a roller, a claw whose tip is bent forward in two stages stands upright at the tip of the cassette. At the same time, the tip of the presser plate is bent in the negative direction and rotates using the rear end as a fulcrum, and the tip of the presser plate is placed close to the above-mentioned claw so that it can be attached to the northern part of the front of case 1. Characteristic paper feeding device.