JPS60223739A - Sheets feeder of image forming device - Google Patents
Sheets feeder of image forming deviceInfo
- Publication number
- JPS60223739A JPS60223739A JP59078711A JP7871184A JPS60223739A JP S60223739 A JPS60223739 A JP S60223739A JP 59078711 A JP59078711 A JP 59078711A JP 7871184 A JP7871184 A JP 7871184A JP S60223739 A JPS60223739 A JP S60223739A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- paper feed
- sheet
- guide plate
- roller
- 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
Links
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
- B65H3/00—Separating articles from piles
- B65H3/44—Simultaneously, alternately, or selectively separating articles from two or more piles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveyance By Endless Belt Conveyors (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
１４ｊ」
本発明は、給紙部から送り出された用紙を画像形成位置
に給送する、画像形成装置における給紙装置に関する。DETAILED DESCRIPTION OF THE INVENTION [14j] The present invention relates to a paper feeding device in an image forming apparatus that feeds paper sent out from a paper feeding section to an image forming position.
災米抜監
電子複写機、ファクシミリ、各種プリンタ等の画像形成
装置において、用紙を画像形成位置（たとえば転写位置
）へ向けて給送するため上記形式の給紙装置を用いるこ
とは従来より周知である。It has long been well known that paper feeding devices of the above type are used to feed paper toward an image forming position (for example, a transfer position) in image forming apparatuses such as electronic copying machines, facsimile machines, and various printers. be.
この場合、給紙部から送り出された用紙を案内するため
、給紙装置には給紙部に所属するガイド板が設けられて
いるが、給紙部を複数設けそのそれぞれにガイド板を所
属させて設けると、コストが上昇するだけでなくガイド
板設置用のスペースが拡大するため、給紙装置、ひいて
は画像形成装置全体が大型化する欠点を免れない。In this case, in order to guide the paper sent out from the paper feed section, the paper feed device is provided with a guide plate that belongs to the paper feed section, but multiple paper feed sections are provided and a guide plate is assigned to each of them. If such a guide plate is provided, not only will the cost increase, but also the space for installing the guide plate will be expanded, which inevitably increases the size of the paper feeding device and, by extension, the entire image forming apparatus.
１旗
本発明は上記認識に基きなされたものであり、その目的
とするところは、°給紙部が複数設けられてはいるが、
用紙案内用のガイド板の設置スペースを従来よりも小さ
くでき、コストを低減できる。The present invention has been made based on the above recognition, and its purpose is to: Although a plurality of paper feed sections are provided,
The installation space for the guide plate for guiding paper can be made smaller than before, and costs can be reduced.
画像形成装置における給紙装置を提供することである。An object of the present invention is to provide a paper feeding device in an image forming apparatus.
給紙部と、該給紙部の下方に位置する少なくとも１つの
下側給紙部と、各給紙部から送り出された用紙をそれぞ
れ案内するガイド板とを有する給紙装置を前提とし、か
がる給紙装置における各給紙部の配置状態に着目し、少
なくとも１つのガイド板に、下側給紙部から送り出され
た用紙を案内する機能の外、少なくとも一方の対向給紙
部から送り出される用紙を案内する機能を持たせること
によってコストの低減およびガイド板全体の占めるスペ
ースを縮小する構成をその特徴とするものである。The present invention is based on a paper feeding device having a paper feeding section, at least one lower paper feeding section located below the paper feeding section, and a guide plate that guides the sheets sent out from each paper feeding section. Focusing on the layout of each paper feeding unit in the paper feeding device, the at least one guide plate has the function of guiding the paper sent out from the lower paper feeding unit, as well as the function of guiding the paper fed out from at least one opposing paper feeding unit. It is characterized by a configuration that reduces costs and reduces the space occupied by the entire guide plate by providing a function to guide the paper that is placed on the guide plate.
以下、本発明の具体的な構成例を図示した実施例に基い
て明らかにする。Hereinafter, specific configuration examples of the present invention will be explained based on illustrated embodiments.
第１図は本発明に係る給紙装置を有する画像形成装置の
一例として両面複写機を示す。本発明の理解のため、先
ずこの複写機の全体構成とその作用の概要を簡単に説明
する。FIG. 1 shows a double-sided copying machine as an example of an image forming apparatus having a paper feeding device according to the present invention. In order to understand the present invention, first, the overall structure of this copying machine and an outline of its operation will be briefly explained.
第１図において、複写機本体１゛には、その内部、側部
および外部に、用紙を載置する給紙部がそれぞれ設けら
れている。図の例では本体内部に中間給紙部２として構
成された給紙部が設けられ、本体１の側部には、中間給
紙部２に対向して位置する給紙部２ａと、その上方に位
置する上側給紙部２ｂとが配設されている。また本体１
の外部には給紙部２ａの下方に下側給紙部２ｃが位置し
ている。複写機本体ｌは、その底板１ａに突設された図
示した足部材３と、図には示していない足部材（第３図
参照）とによってテーブル４上に載置されている。In FIG. 1, a copying machine main body 1' is provided with paper feed sections on the inside, side and outside thereof, respectively, for placing paper thereon. In the illustrated example, a paper feeding section configured as an intermediate paper feeding section 2 is provided inside the main body, and a paper feeding section 2a located opposite to the intermediate paper feeding section 2 and a paper feeding section 2a located above the intermediate paper feeding section 2 are provided on the side of the main body 1. An upper paper feeding section 2b located at the upper paper feeding section 2b is disposed. Also, main body 1
A lower paper feed section 2c is located outside the paper feed section 2a below the paper feed section 2a. The copying machine main body 1 is placed on a table 4 by means of the illustrated leg members 3 protruding from the bottom plate 1a and leg members (see FIG. 3) not shown.
中間給紙部２は、後述する如く用紙の両面に複写画像を
形成する両面コピーモード時に用いられる。The intermediate paper feed section 2 is used in a double-sided copy mode in which copied images are formed on both sides of a sheet of paper, as will be described later.
複写機本体１の側部に設けられた給紙部２ａ。A paper feed section 2a is provided on the side of the copying machine main body 1.
２ｂは、この本体ｌに着脱゛可能に装着された給紙カセ
ット５ａ、５ｂと、各カセットに載置された ′用紙６
に接触してこれを送り出す給紙ローラ７ａ。2b shows paper feed cassettes 5a and 5b removably attached to the main body l, and paper 6 placed in each cassette.
A paper feed roller 7a contacts and sends out the paper.
７ｂと、最上位の用紙と他の用紙を分離して最上位紙だ
けを送り出す分離ローラ８ａ、８ｂおよびその相手ロー
ラ９ａ、９ｂとを有している。7b, separation rollers 8a and 8b, and their counterpart rollers 9a and 9b, which separate the uppermost sheet from other sheets and send out only the uppermost sheet.
下側給紙部２ｃは、必要に応じて設けられる所謂オプシ
ョン形式の給紙部であり、互いに離間して平行に配置さ
れた２つの側板１０（図には一方の側板だけを示す）と
、これら側板を連結する連結板１１と、両側板間に着脱
自在に装着されたカセット５ｃとを有し、両側板には既
述の給紙部２ａ、２ｂにおけると同様な給紙ローラ７ｃ
および分離・相手ローラ”ｙ９ｃが回転自在に支持され
ている。カセット５ｃには、他の２つの給紙部２ａ、２
ｂのカセット５ａｊ５ｂと同じく、複写前の用紙６が載
置される。下側給紙部２ｃはその全体がユニット状に構
成され、必要とするユーザがこれを買いめ、複写機本体
１とテーブル４との間のデッドスペースとなっていた空
間に差し込んで使用できるようになっている。差し込ま
れた下側給紙部２ｃは図示した位置決め部材工２、およ
び図示していない他の位置決め部材とによって所定の位
置に位置決めされる。このとき図示していない伝動装置
を介して、各ローラ７ ｃ ｙ ８ ｃ ＊９ｃが本体
１内の駆動源に接続される。下側給紙部２ｃを本体１と
テーブル４との間に配置する代りに、複写機専用のテー
ブル４を用い、これに下側給紙部２ｃを装着するように
してもよい。The lower paper feed section 2c is a so-called optional paper feed section that is provided as needed, and includes two side plates 10 (only one side plate is shown in the figure) arranged parallel to each other and spaced apart from each other. It has a connecting plate 11 that connects these side plates, and a cassette 5c that is detachably attached between both side plates.
and a separation/mate roller "y9c" are rotatably supported.The cassette 5c includes two other paper feed sections 2a,
As with the cassettes 5aj5b of 5b, paper 6 before copying is placed therein. The entire lower paper feed section 2c is constructed in the form of a unit, so that a user who needs it can buy it and use it by inserting it into the dead space between the copying machine main body 1 and the table 4. It has become. The inserted lower paper feed section 2c is positioned at a predetermined position by the illustrated positioning member 2 and other positioning members not illustrated. At this time, each roller 7 c y 8 c *9c is connected to a drive source within the main body 1 via a transmission device (not shown). Instead of arranging the lower paper feed section 2c between the main body 1 and the table 4, a table 4 dedicated to the copying machine may be used, and the lower paper feed section 2c may be attached to this table 4.
下側給紙部２ｃを不要と考えるユーザはこの給紙部２ｃ
なしで、複写機を用いることができる。Users who think that the lower paper feed section 2c is unnecessary should use this paper feed section 2c.
You can use a copy machine without one.
複写動作時には、上下方向に重ね合せた状態で配設され
た３つの給紙部２ａ、２ｂ、２ｃから用紙６が選択的に
送り出される。During a copying operation, paper 6 is selectively sent out from three paper feed sections 2a, 2b, and 2c arranged in a vertically overlapping state.
たとえば上側給紙部２ｂから用紙を給送すべきときは、
時計方向に回転する給紙ローラ７ｂによってカセット５
ｂ内の用紙を矢印Ａ方向に送り出し、それぞれ矢印方向
に回転する分離ローラ８ｂとその相手ローラ９ｂによっ
て最上位紙だけを給紙部２ｂから送り出す。かく送り出
された用紙は、ガイド板１３ｂ、１４ｂに案内され、用
紙先端が１対のレジストローラ１５に至ったところで停
止する。For example, when paper should be fed from the upper paper feed section 2b,
The cassette 5 is fed by the paper feed roller 7b that rotates clockwise.
The sheets in b are sent out in the direction of arrow A, and only the topmost sheet is sent out from the paper feed section 2b by the separation roller 8b and its mating roller 9b, which rotate in the directions of the arrows. The paper thus sent out is guided by guide plates 13b and 14b, and stops when the leading edge of the paper reaches a pair of registration rollers 15.
一方、それ自体周知の態様で、コンタクトガラス１６上
に載置された原稿１７に光が照明され、その画像に対応
したトナー像が、時計方向に回転する感光体ドラム１８
上に形成され、このドラム１８の回転に対し所定のタイ
ミングでレジストローラ１５が矢印で示す方向に回転を
開始する。これによりレジストローラ１５まで搬送され
た用紙が所定のタイミングで画像形成位置、本例では転
写位置１９に送り込まれ、転写チャージャ２０の作用で
ドラム１８上のトナー像が用紙に転写される。On the other hand, in a manner well known per se, a document 17 placed on a contact glass 16 is illuminated with light, and a toner image corresponding to the image is formed on a photoreceptor drum 18 rotating clockwise.
The registration rollers 15 start rotating in the direction indicated by the arrow at a predetermined timing with respect to the rotation of the drum 18. As a result, the paper conveyed to the registration rollers 15 is sent to an image forming position, in this example, a transfer position 19, at a predetermined timing, and the toner image on the drum 18 is transferred to the paper by the action of the transfer charger 20.
分離チャージャ２１の作用でドラム１８から分離された
用紙は定着装置２２へ送られ、ここでトナー像が定着さ
れる。用紙の片面にのみ画像を形成する片面コピーモー
ド時には、定着装置２２を出た用紙は送りローラ２３，
２４を通り、実線の位置にもたらされた切換ガイド部材
２５により案内され、矢印Ｂで示す如く排紙ローラ２６
によって機外に排出される。The paper separated from the drum 18 by the action of the separation charger 21 is sent to a fixing device 22, where the toner image is fixed. In the single-sided copy mode in which an image is formed only on one side of the paper, the paper that leaves the fixing device 22 is transferred to the feed roller 23,
24, and is guided by the switching guide member 25 brought to the position indicated by the solid line, and as shown by arrow B, the paper ejection roller 26
is ejected from the aircraft.
両面コピーモード時には切換ガイド部材２５は鎖線で示
す位置に切換えられ、よって送りローラ２３．２４を出
た用紙は他の送りローラ２７によって反転ガイド板２８
に送り込まれ（矢印Ｃ）、次いで図示する如く下方に落
下したもう１つの送りローラ２９によって反転ガイド板
２８から矢印Ｃと反対の方向に送り戻され、送りローラ
２４’、 ３０およびゲート装置１３１を通って、中間
給紙部２の再給紙トレイ５に送り込まれる。In the double-sided copy mode, the switching guide member 25 is switched to the position shown by the chain line, so that the paper that has left the feed rollers 23 and 24 is transferred to the reversing guide plate 28 by the other feed rollers 27.
(arrow C), and is then sent back from the reversing guide plate 28 in the direction opposite to arrow C by another feed roller 29 that has fallen downward as shown in the figure, passing the feed rollers 24', 30 and gate device 131. The paper is then fed into the re-feed tray 5 of the intermediate paper feed section 2.
ゲート装置３１は、矢印り方向に駆動されるベルト３２
と、複数のゲート部材３３，３４．３５を有し、用紙の
長さに応じて各ゲート部材が実線の位置から鎖線の位置
へ回動する。すなわち用紙の長さが一番長いときは、第
１のゲート部材３３が鎖線の位置を占め、よって用紙は
矢印Ｅで示す如く再給紙トレイ５へ送られ、用紙の長さ
が次に長いときは第２のゲート部材３４が鎖線の位置に
回動して、この用紙は矢印Ｆで示す如く搬送され、用紙
がさらに短かいときは同様に矢印Ｇで示す如く搬送され
る。また長さの−で番短かい用紙はベルト３２を巻き掛
けている右側のローラの下を通り、矢印Ｈで示す如く再
給紙トレイ５へ搬送される。The gate device 31 has a belt 32 driven in the direction of the arrow.
It has a plurality of gate members 33, 34, and 35, and each gate member rotates from the position shown by the solid line to the position shown by the chain line depending on the length of the paper. That is, when the length of the paper is the longest, the first gate member 33 occupies the position indicated by the chain line, so the paper is sent to the refeed tray 5 as shown by arrow E, and when the length of the paper is the next longest, the first gate member 33 occupies the position indicated by the chain line. When the paper is shorter, the second gate member 34 is rotated to the position shown by the chain line, and the paper is transported as shown by arrow F. When the paper is shorter, it is similarly transported as shown by arrow G. The shortest sheet of paper passes under the right roller around which the belt 32 is wrapped, and is conveyed to the re-feeding tray 5 as shown by arrow H.
中間給紙部２へ送り込まれた用紙はその呼び込みローラ
３６によって搬送され、用紙の先端がストッパ３７に当
ったところで停止する。この用紙のもう一方の面にも画
像を形成するため、この用紙を中間給紙部２から送り出
すときは、ストッパ３７が鎖線で示す如く退避し、用紙
は給紙ローラフによって送り出された後、分離ローラ８
とその相手ローラ９によって最上位紙だけが分離される
。The paper fed into the intermediate paper feed section 2 is conveyed by the pull-in roller 36, and is stopped when the leading edge of the paper hits a stopper 37. In order to form an image on the other side of this paper, when this paper is sent out from the intermediate paper feed section 2, the stopper 37 is retracted as shown by the chain line, and after the paper is sent out by the paper feed roller, it is separated. roller 8
Only the uppermost sheet is separated by the roller 9 and its counterpart roller 9.
かく分離された用紙はガイド板１３，１４に案内されな
がら矢印１方向に搬送され、それぞれ矢印方向に回転駆
動された１対の中継ローラ３８へ送られ、このローラ３
８により搬送力を受け、既述のレジストローラ１５へ送
り込まれ、引き続き先に説明した動作と全く同様にして
用紙の他方の面に画像が形成される。このようにして両
面に画像を形成された用紙は、排紙ローラ２６によって
機外に排出される。The thus separated sheets are conveyed in the direction of the arrow 1 while being guided by the guide plates 13 and 14, and are sent to a pair of relay rollers 38 that are rotationally driven in the directions of the arrows.
8, the paper is fed to the registration rollers 15 described above, and an image is subsequently formed on the other side of the paper in exactly the same manner as described above. The paper on which images have been formed on both sides in this manner is discharged to the outside of the machine by a paper discharge roller 26.
給紙部２ａの用紙も上側給紙部２におけると同様に、給
紙ローラ７ａ、分離ローラ８ａおよびその相手ローラ９
ａによって１枚ずつ送り出され、ガイド板１３ａ、１４
ａ４→案内されつつ矢印Ｊ方向に搬送され、中継ローラ
３８を通りレジストローラ１５へ送られ、次いでここか
ら転写位置１９へと給送される。As in the upper paper feeding section 2, the paper in the paper feeding section 2a also has a paper feeding roller 7a, a separating roller 8a, and its counterpart roller 9.
The guide plates 13a and 14 are fed out one by one by the
a4 → The sheet is guided and conveyed in the direction of arrow J, passes through the relay roller 38, is sent to the registration roller 15, and is then fed from there to the transfer position 19.
また下側給紙部２ｃから用紙を送り出すときも、矢印で
示す方向に回転する給紙ローラ７ｃ、分離およびその相
手ローラ８ｃ、９ｃによってカセット５ｃ内の用紙６が
１枚ずつ送り出され、送り出された用紙は両側板１０に
固着された１枚のガイド板１３ｃによって案内され、本
体１の底板１ａに予め形成されたスリット３９を通して
本体１内に進入する。そしてこの用紙は、本体側に予め
設けられている１対のガイド板１４ｃによって矢印に方
向に案内され、中継ローラ３８を通してレジストローラ
１５へ搬送される。底板１ａに用紙が通過できる切欠が
元々形成されているときは、スリット３９を形成しなく
ともよいことは当然である。Also, when paper is fed out from the lower paper feed section 2c, the paper 6 in the cassette 5c is fed out one by one by the paper feed roller 7c rotating in the direction shown by the arrow, and the separating and mating rollers 8c and 9c. The paper is guided by one guide plate 13c fixed to both side plates 10, and enters the main body 1 through a slit 39 formed in advance in the bottom plate 1a of the main body 1. The paper is guided in the direction of the arrow by a pair of guide plates 14c provided in advance on the main body side, and is conveyed to the registration rollers 15 through the relay rollers 38. It goes without saying that the slit 39 does not need to be formed when the bottom plate 1a is originally formed with a notch through which the paper can pass.
上述の如く、用紙を転写位置１９へ送り込む給紙装置４
０は、４つの給紙部２．２ａ、２ｂ、２Ｃと、各給紙部
かう送り出された用紙をガイドするガイド板と、レジス
トローラ１５とを有してぃるが、このように複数の給紙
部２ ｔ ２ ａ ｙ ２ ｂ ＊２ｃを設けると、そ
のそれぞれから送り出される用紙用のガイド板の数が増
大し、これらが占めるスペースが拡大する虞れのあるこ
とは先にも説明した６そこで図示した給紙装置において
は次の点に着目して、ガイド板１３．１３ａを下側給紙
部２ｃから送られてくる用紙用のガイド板としても利用
している。すなわち複写機本体１の側部に位置する１つ
の給紙部２ａと、本体内のもう１つの中間給紙部２とは
互いにほぼ対向して位置し、これら給紙部２，２ａから
送り出される用紙の送り出し方向もほぼ対向した向きで
あり、各給紙部２゜２ａから搬出された用紙は共通の中
継ローラ３８へ向けて進む。このためこれら給紙部２，
２ａ用のガイド板１３，１３ａはその先端に向けて順次
互いに接近する。したがって互いに接近する両ガイド板
１３，１３ａの間を利用することによって。As mentioned above, the paper feed device 4 feeds the paper to the transfer position 19.
0 has four paper feed sections 2.2a, 2b, and 2C, a guide plate that guides the paper fed by each paper feed section, and a registration roller 15. As previously explained, when the paper feed section 2 t 2 a y 2 b *2c is provided, the number of guide plates for paper sent out from each increases, and the space occupied by these may increase. 6. Therefore, in the illustrated paper feeding device, the guide plate 13.13a is also used as a guide plate for paper fed from the lower paper feeding section 2c, paying attention to the following points. That is, one paper feed section 2a located on the side of the copying machine main body 1 and another intermediate paper feed section 2 inside the main body are located almost opposite each other, and the paper is sent out from these paper feed sections 2, 2a. The paper feed directions are also substantially opposite to each other, and the paper discharged from each paper feed section 2.degree. 2a advances toward a common relay roller 38. For this reason, these paper feed sections 2,
The guide plates 13, 13a for 2a gradually approach each other toward their tips. Therefore, by utilizing the space between the guide plates 13 and 13a that are close to each other.
下側給紙部２ｃから送り出された用紙を支障なく案内し
、この用紙を中継ローラ３８に導びくことができる。中
継ローラ３８を省略し、各給紙部２゜へ導びくようにし
たときも同様である。がかる考えに対応して、下側給紙
部２ｃ用のガイド板１４Ｃは中継ローラ３８までは延び
ておらず、下側給紙部２ｃから送り出されて中継ローラ
３８へ向がう用紙は、その途中から給紙部２ａ用に設け
られたガイド板１３ａの裏面と、中間給紙部２用のガイ
ド板１３の裏面とによって案内されるように構成されて
いる。かくして、一方のガイド板１３は中間給紙部２か
らの用紙用のガイド板と、下側給紙部２ｃからの用紙用
のガイド板を兼用し、同様にもう１つのガイド板１３ａ
は、給紙部２ａからの用紙用と、下側給紙部２ｃからの
用紙用のガイド板を兼用する。このため給紙装置全体の
ガイド板が占めるスペースを縮小でき、給紙部［４０、
ひいては複写機全体のコンパクト化、およびコストの低
減を達成できる。The paper sent out from the lower paper feed section 2c can be guided without any hindrance, and the paper can be guided to the relay roller 38. The same applies when the relay roller 38 is omitted and the paper is guided to each paper feed section 2°. Corresponding to this idea, the guide plate 14C for the lower paper feed section 2c does not extend as far as the relay roller 38, and the paper fed from the lower paper feed section 2c and headed toward the relay roller 38 is It is configured to be guided from the middle by the back surface of a guide plate 13a provided for the paper feed section 2a and the back surface of the guide plate 13 for the intermediate paper feed section 2. Thus, one guide plate 13 serves both as a guide plate for paper from the intermediate paper feed section 2 and a guide plate for paper from the lower paper feed section 2c, and similarly, the other guide plate 13a serves as a guide plate for paper from the lower paper feed section 2c.
serves as a guide plate for paper from the paper feed section 2a and for paper from the lower paper feed section 2c. Therefore, the space occupied by the guide plate of the entire paper feeding device can be reduced, and the paper feeding section [40,
As a result, the entire copying machine can be made more compact and its cost can be reduced.
本発明は、第１図に示した上側給紙部２ｂが設けられて
いない給紙装置にも適用できることは、上の説明からも
明らかである。It is clear from the above description that the present invention can also be applied to a paper feeding device that is not provided with the upper paper feeding section 2b shown in FIG.
なお、２つの給紙部２，２ａを互いに対向させて配置す
ると、これらを上下に重ねて配設した場合に比べ、複写
機全体の高さを低く抑えることができ、この点からも複
写機のコンパクト化が可能となる。また第１図に示した
実施例のように下側給紙部２ｃを、複写機本体１と、テ
ーブル４との間のスペース、またはテーブル４内に差し
込むようにすれば、下側給紙部２ｃを追加しても複写機
の高さが増大することはない。但し本発明は、第１図に
示した本体ｌの底板１ａを図の状態よりもさらに下げ、
そこに形成された空間にオプション形式の給紙部２ｃを
収容できるようにした給紙装置にも適用できることは当
然である。のみならず第２図に示す如く互いに対向する
２つの対向給紙部２，２ａの下方に、オプション形式で
はない通常の下側給紙部２ｄを設けたときも本発明を適
用できる。すなわち、この給紙部２ｄのカセット５ｄか
ら、その給紙ローラ７ｄ、分離・相手ローラ８ｄ、９ｄ
によって送り出された用紙６を、−ガイド板１４ｄでガ
イドする外、対向する給紙部２゜２ａ用のガイド板１３
，１３ａによって矢印にで示す如く案内することができ
る。また対向する２つの給紙部２，２ａの下方に配置さ
れる下側給紙部が複数であるときも、あるいは第２図に
鎖線で示す如く複写機の本体１内に設けられているとき
も、本発明を支障なく適用できる。Note that by arranging the two paper feed sections 2 and 2a to face each other, the overall height of the copying machine can be kept lower than when they are arranged one above the other, and from this point of view, the height of the copying machine can also be reduced. can be made more compact. Furthermore, if the lower paper feed section 2c is inserted into the space between the copying machine main body 1 and the table 4 or into the table 4 as in the embodiment shown in FIG. 2c does not increase the height of the copying machine. However, in the present invention, the bottom plate 1a of the main body l shown in FIG. 1 is lowered further than the state shown in the figure,
It goes without saying that the present invention can also be applied to a paper feeding device in which an optional paper feeding section 2c can be accommodated in the space formed therein. In addition, the present invention can also be applied when a normal lower paper feed section 2d, which is not an option, is provided below the two opposing paper feed sections 2, 2a facing each other as shown in FIG. That is, from the cassette 5d of this paper feeding section 2d, the paper feeding roller 7d, separation/mate rollers 8d, 9d.
In addition to guiding the paper 6 sent out by the - guide plate 14d, there is also a guide plate 13 for the opposing paper feed section 2゜2a.
, 13a, it is possible to guide as shown by the arrow. Also, when there is a plurality of lower paper feed sections disposed below the two opposing paper feed sections 2, 2a, or when they are provided within the main body 1 of the copying machine as shown by the chain line in FIG. The present invention can also be applied without any problem.
さらに上記実施例では対向する２つの給紙部のうち７本
体ｌ内に設けられる給紙部を、両面複写時に用いられる
中間給紙部としたが、本体１内の給紙部が、第３図に示
す如く複写前の用紙６を載置するカセット５ｅと、給紙
ローラ７ｅ、および分離・相手ローラ８ｅ、９ｅを有す
る通常の給紙部２ｅであるときも、先に説明した実施例
と同様にして本発明を適用できる。オプション形式の給
紙部２Ｇが第３図に示す如く本体ｌの下に収納されるよ
うに配置されるときも同様である。Further, in the above embodiment, seven of the two opposing paper feed units provided in the main body 1 were set as the intermediate paper feed unit used for double-sided copying, but the paper feed unit in the main body 1 was the third paper feed unit. As shown in the figure, even when the paper feed section 2e is a normal paper feed section 2e having a cassette 5e in which the paper 6 to be copied is placed, a paper feed roller 7e, and separation/mate rollers 8e, 9e, the embodiment described above is used. The present invention can be applied in the same manner. The same applies when the optional paper feed section 2G is arranged to be housed under the main body l as shown in FIG.
また第３図に示すように、下側給紙部２ｃ用の１対のガ
イド板１４ｃのうち、図における右側のガイド板１４０
′を中継ローラ３８まで延ばし、この延長部分を、下側
給紙部２ｃからの用紙のガイド板として利用すると共に
、一方の対向給紙部２ｅ（または第１図に示した中間給
紙部２）から送り出された用紙用のガイド板として用い
ることにより、この延長部分を両給紙部用のガイド板と
して兼用することもできる。Further, as shown in FIG. 3, of the pair of guide plates 14c for the lower paper feed section 2c, a guide plate 140 on the right side in the figure
' is extended to the relay roller 38, and this extended portion is used as a guide plate for paper from the lower paper feed section 2c. ), this extended portion can also be used as a guide plate for both paper feed sections.
さらに第４図に示す如く、下側給紙部からの用紙用の１
対のガイド板１４ｃの一方１４ｃ’ を湾曲させて、給
紙部２ａの分離・相手ローラ８ａ。Furthermore, as shown in FIG. 4, one for paper from the lower paper feed section
One side 14c' of the pair of guide plates 14c is curved to separate the paper feed section 2a and the mating roller 8a.
９ａに近づけ、このガイド板１４ｃ’ を下側給紙部か
らの用紙用のガイド板の外、両対向給紙部２（または２
ｅ）と２８からそれぞれ送り出された用紙用のガイド板
として用いることもできる。9a, and move this guide plate 14c' to the outside of the guide plate for paper from the lower paper feed section, and to the opposite paper feed section 2 (or 2
It can also be used as a guide plate for sheets sent out from e) and 28, respectively.
第２図乃至第４図における他の構成は、第１図と同様に
構成でき、第１図に対応する部分には同一の符号を付し
ておく。The other configurations in FIGS. 2 to 4 can be configured in the same manner as in FIG. 1, and parts corresponding to those in FIG. 1 are given the same reference numerals.
以上、本発明を複写機の給紙装置に適用した具体例を説
明したが、複写機以外の画像形成装置における給紙装置
にも適用できることは当然である。Although a specific example in which the present invention is applied to a paper feeding device of a copying machine has been described above, it is of course applicable to a paper feeding device of an image forming apparatus other than a copying machine.
また各給紙部の構成は図示した形態に限定されず、それ
自体公知な適宜な形式の給紙部、たとえば手摺υ艮
本発明によれば、少なくとも１つのガイド板を、複数の
給紙部用のガイド板として用いることができるため、給
紙部を複数設けてもガイド板の占めるスペースを小さく
留めることができ、給紙装置、したがって画像形成装置
をコンパクトに構成でき、しかもコストの低減を図るこ
とが可能となった。Further, the configuration of each paper feed section is not limited to the illustrated form, but may be any suitable type of paper feed section known per se, for example, a handrail.According to the present invention, at least one guide plate can be connected to a plurality of paper feed sections. Because it can be used as a guide plate for paper feeders, the space occupied by the guide plate can be kept small even when multiple paper feeders are provided, allowing the paper feeder and therefore the image forming apparatus to be configured compactly, and also to reduce costs. It became possible to achieve this goal.
第１図は本発明に係る給紙装置を有する両面複写機の部
分断面概略図、第２図乃至第４図は給紙装置の他の実施
例をそれぞれ示す断面図である。
２．２ａ、２ｇ・・・対向給紙部
２ｃ、２ｄ・・・下側給紙部
１３．１４，１３ ａ、１４ ａ、１３ ｃ、１４ ｃ
、ｌ ４ｄ、ｌ ４ ｃ’ ・・・ガイド板 。
４０・・・給紙装置
代理人 弁理士 星 野 則 夫 ｅ診ｂ第２図
第３図FIG. 1 is a partial cross-sectional schematic diagram of a double-sided copying machine having a paper feeding device according to the present invention, and FIGS. 2 to 4 are sectional views showing other embodiments of the paper feeding device. 2.2a, 2g... Opposing paper feed section 2c, 2d... Lower paper feed section 13.14, 13 a, 14 a, 13 c, 14 c
, l 4d, l 4 c'...guide plate. 40... Paper feeder agent Patent attorney Norio Hoshino e-diagnosis b Figure 2 Figure 3
Claims (1)
下方に位置する少なくとも１つの下側給紙部と、各給紙
部から送り出された用紙をそれぞれ案内するガイド板と
を具備し、給紙部から送り出された用紙を画像形成位置
に給送する画像形成装置における給紙装置において。 少なくとも１つのガイド板が、下側給紙部から送り出さ
れた用紙を案内するガイド板と、少なくとも一方の対向
給紙部から送り出される用紙用のガイド板を兼用してい
ることを特徴とする前記給紙装置。[Scope of Claims] Two opposing paper feed sections located in parallel with each other, at least one lower paper feed section located below the paper feed sections, and a paper fed out from each paper feed section. In a paper feeding device of an image forming apparatus, which is provided with guide plates for guiding each paper and feeds paper sent out from a paper feeding section to an image forming position. The at least one guide plate doubles as a guide plate for guiding paper sent out from the lower paper feed section and a guide plate for paper sent out from at least one opposing paper feed section. Paper feed device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59078711A JPS60223739A (en) | 1984-04-20 | 1984-04-20 | Sheets feeder of image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59078711A JPS60223739A (en) | 1984-04-20 | 1984-04-20 | Sheets feeder of image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60223739A true JPS60223739A (en) | 1985-11-08 |
Family
ID=13669448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59078711A Pending JPS60223739A (en) | 1984-04-20 | 1984-04-20 | Sheets feeder of image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60223739A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0272250U (en) * | 1988-11-22 | 1990-06-01 | ||
| US5232211A (en) * | 1991-06-18 | 1993-08-03 | Mita Industrial Co., Ltd. | Sheet transport device capable of preventing multiple feeding |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55120065A (en) * | 1979-03-09 | 1980-09-16 | Ricoh Co Ltd | Electrophotographic copier |
| JPS58105249A (en) * | 1981-12-18 | 1983-06-23 | Ricoh Co Ltd | Copying machine |
-
1984
- 1984-04-20 JP JP59078711A patent/JPS60223739A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55120065A (en) * | 1979-03-09 | 1980-09-16 | Ricoh Co Ltd | Electrophotographic copier |
| JPS58105249A (en) * | 1981-12-18 | 1983-06-23 | Ricoh Co Ltd | Copying machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0272250U (en) * | 1988-11-22 | 1990-06-01 | ||
| US5232211A (en) * | 1991-06-18 | 1993-08-03 | Mita Industrial Co., Ltd. | Sheet transport device capable of preventing multiple feeding |
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