JPH0826568A - Paper discharging device - Google Patents

Paper discharging device

Info

Publication number
JPH0826568A
JPH0826568A JP18179794A JP18179794A JPH0826568A JP H0826568 A JPH0826568 A JP H0826568A JP 18179794 A JP18179794 A JP 18179794A JP 18179794 A JP18179794 A JP 18179794A JP H0826568 A JPH0826568 A JP H0826568A
Authority
JP
Japan
Prior art keywords
paper
upper limit
recording
detecting means
paper placing
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
JP18179794A
Other languages
Japanese (ja)
Inventor
Manabu Tanaka
学 田中
Takahiro Ito
隆宏 伊藤
Shinji Ito
伸治 伊藤
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.)
Kyocera Corp
Original Assignee
Kyocera Corp
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 Kyocera Corp filed Critical Kyocera Corp
Priority to JP18179794A priority Critical patent/JPH0826568A/en
Publication of JPH0826568A publication Critical patent/JPH0826568A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To provide a paper discharging device improved in the function and reliability by maintaining and realizing the optimum working state during the discharge of recording sheets according to the state of discharge regardless of the discharge quantity. CONSTITUTION:A paper discharging device is provided with a paper placing base 20 for placing recording sheets 15 conveyed sheet by sheet from a recording device 11, a driving means for driving the paper placing base 20 in vertical motion, an upper limit detecting means 25 for detecting the paper placing base 20 reaching the upper limit position, a sheet detecting means 25 for detecting the accumulation of the recording sheets 15 to the specified quantity on the paper placing base 20, and a control means for controlling the driving means so as to lower the paper placing base 20 by the set quantity when the upper limit detecting means 25 detects the paper placing base 20 reaching the upper limit position or when the sheet detecting means 25 detects the accumulation of the recording sheets 15 to the specified quantity on the paper placing base 20. One detecting means 25 is used as both the upper limit detecting means 25 and sheet detecting means 25.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、プリンタや複写機等の
記録装置で印字,複写されて排紙された記録用紙を貯え
るスタッカ等の排紙装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet discharging device such as a stacker for storing recording sheets printed and copied by a recording device such as a printer or a copying machine and discharged.

【0002】[0002]

【従来の技術】プリンタや複写機等の記録装置で印字,
複写されて排紙された記録用紙は従来、プリンタや複写
機等の排紙口の下方に設けた排紙トレイで受けて、そこ
に一定量貯えるようになっていた。
Printing on a recording device such as a printer or a copying machine,
Conventionally, the copied and discharged recording paper has been received by a paper discharge tray provided below a paper discharge port of a printer, a copying machine, or the like, and stored in a certain amount.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、このよ
うな従来の排紙トレイではわずかの量の記録用紙しか貯
えることができず、それ以上続けて記録用紙を排紙する
とトレイが壊れたり、紙詰まりを生じてしまうという問
題がある。
However, such a conventional paper discharge tray can store only a small amount of recording paper, and if the recording paper is continuously discharged more than that, the tray will be broken or jammed. There is a problem that will occur.

【0004】近年大量の記録用紙を連続して印字できる
画像形成装置システムが用いられるようになり、そのよ
うなシステムにおいて大量の記録用紙の排紙に対応する
ために、上記従来の排紙トレイに代わる大容量の排紙装
置が必要になるが、このような排紙装置はその収容能力
に見合った機能を果たさなければならない。
In recent years, an image forming apparatus system capable of continuously printing a large amount of recording paper has been used. In order to cope with the discharge of a large amount of recording paper in such a system, the conventional paper discharge tray has been used. An alternative large-capacity paper ejection device is required, and such a paper ejection device must perform a function commensurate with its storage capacity.

【0005】すなわち排紙量が少ないときはそれに適し
た使用状態となり、排紙量が大量のときはそれに適した
使用状態となり、排紙量が少ないときから徐々に増えて
いく過程においても常に適切な使用状態を維持する必要
がある。
That is, when the amount of discharged paper is small, the usage state is suitable for it, and when the amount of discharged paper is large, the usage state is suitable for it, and it is always appropriate even in the process of gradually increasing the amount of discharged paper. It is necessary to maintain proper usage.

【0006】たとえば、排紙量が少ないのに多いときの
ような使用状態になると、紙の不揃い、折れ、カール、
シワ等の不都合を生じ、排紙量が多いのに少ないときの
ような使用状態となると、紙詰まり、搬送路の部品の故
障等の不都合を生じる等して、非常に排紙装置としてそ
の機能、信頼性が低下するという問題がある。
[0006] For example, when the amount of discharged paper is small but the amount of paper is large, when the paper is used, unevenness, creases, curls,
When it is used such as when wrinkles are inconvenient and the amount of discharged paper is large but it is small, paper jams, inconveniences such as failure of parts of the transport path, etc. However, there is a problem that reliability is reduced.

【0007】そこで本発明は、排紙量が多いか少ないか
にかかわらずその排紙状況に応じて、記録用紙が排紙さ
れている間はいつでも最適な使用状態を維持、実現する
ことにより、その機能、信頼性を向上させた排紙装置を
提供することを課題とするものである。
Therefore, according to the present invention, regardless of whether the amount of discharged paper is large or small, the optimum use state is maintained and realized at any time while the recording paper is discharged, depending on the discharge status. An object of the present invention is to provide a paper discharge device having improved functions and reliability.

【0008】[0008]

【課題を解決するための手段】上記課題を解決するため
に、本発明による排紙装置は、記録装置から1枚ずつ搬
送されてきた記録用紙を上に載置する紙載置台と、前記
紙載置台の上下動を駆動する駆動手段と、前記紙載置台
が上限位置に来たことを検知する上限検知手段と、前記
紙載置台の上の記録用紙が所定量たまったことを検知す
る用紙検知手段と、前記上限検知手段が前記紙載置台が
上限位置に来たことを検知したとき、又は前記用紙検知
手段が記録用紙が前記紙載置台の上に所定量たまったこ
とを検知したときは前記紙載置台を設定量だけ下降させ
るよう前記駆動手段を制御する制御手段とを備え、前記
上限検知手段及び前記用紙検知手段の2つの検知手段を
1つの検知手段で兼用させた構成とするものである。
In order to solve the above-mentioned problems, a paper discharge device according to the present invention comprises a paper mounting table on which the recording papers conveyed one by one from the recording device are mounted, and the paper. Driving means for driving the up / down movement of the mounting table, upper limit detecting means for detecting that the paper mounting table has reached the upper limit position, and paper for detecting that a predetermined amount of recording paper on the paper mounting table has accumulated When the detecting means and the upper limit detecting means detect that the paper placing table has reached the upper limit position, or when the sheet detecting means detects that a predetermined amount of recording paper has accumulated on the paper placing table. Is provided with a control means for controlling the drive means so as to lower the paper placing table by a set amount, and one detection means is used as both the upper limit detection means and the paper detection means. It is a thing.

【0009】[0009]

【作用】このような排紙装置によれば、排紙前の準備段
階で紙載置台が駆動手段に駆動されて上昇し、上限位置
に達するとこれを上限検知手段が検知し、制御手段に信
号を伝える。信号を受けた制御手段は駆動手段を制御し
て、紙載置台を設定量だけ下降させる。この後排紙が開
始されて紙載置台の上に記録用紙がたまっていき、記録
用紙が所定量たまると用紙検知手段がそのことを検知
し、制御手段にこの検知信号を伝える。検知信号を受け
た制御手段は駆動手段を制御して、紙載置台をまた設定
量だけ下降させる。
According to such a paper discharge device, the paper placing table is driven by the drive means to rise in the preparation stage before paper discharge, and when the upper limit position is reached, the upper limit detection means detects this and the control means Convey a signal. Upon receiving the signal, the control means controls the drive means to lower the paper placing table by the set amount. After this, discharge of the paper is started and the recording paper is accumulated on the paper placing table. When the recording paper is accumulated by a predetermined amount, the paper detecting means detects that and the control means is notified of this detection signal. Receiving the detection signal, the control means controls the drive means to lower the paper placing table again by the set amount.

【0010】その状態で排紙が継続されてまた、これま
でたまった紙の上に記録用紙が所定量たまると、同様に
して紙載置台を再び設定量だけ下降させる。このような
紙載置台の下降、停止の動作を次々と繰り返していくこ
とにより、排紙量が多いか少ないかにかかわらず、その
排紙状況に応じて、記録用紙が排紙されている間はいつ
でも最適な使用状態を維持、実現できて、排紙装置の機
能、信頼性を向上させることができる。
In this state, the paper discharge is continued, and when a predetermined amount of recording paper is accumulated on the accumulated paper, the paper placing table is likewise lowered again by the set amount. By repeating such descending and stopping operations of the paper placing table one after another, regardless of whether the amount of discharged paper is large or small, while the recording paper is being discharged depending on the discharge status. Can always maintain and realize the optimum use condition, and can improve the function and reliability of the paper discharge device.

【0011】また、上記上限検知手段と用紙検知手段の
2つの検知手段を1つの検知手段で兼用することによ
り、部品点数の増加を防止してコストアップを防止する
ことができると共に、部品を設けるためのスペースが狭
くなるの防止することができ、装置内のレイアウト上有
利となる。
Also, by using the two detection means, the upper limit detection means and the paper detection means, as one detection means, it is possible to prevent an increase in the number of parts and prevent a cost increase, and at the same time, to provide the parts. It is possible to prevent the space for this from being narrowed, which is advantageous in terms of layout within the device.

【0012】[0012]

【実施例】以下、本発明の実施例について図面に基づい
て説明する。図1は本発明の一実施例に係る排紙装置1
0を用いた画像形成装置システムを示す図である。同図
において、符号10は大容量の排紙装置、11はプリン
タ装置(記録装置)、17は大容量の給紙装置である。
給紙装置17から供給された記録用紙15がプリンタ装
置11により印字されて、搬送装置18により搬送され
て排紙装置10内の紙載置台20上に排紙されて収納室
19に収納されるようになっている。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a paper discharge device 1 according to an embodiment of the present invention.
FIG. 2 is a diagram showing an image forming apparatus system using 0. In the figure, reference numeral 10 is a large-capacity paper discharging device, 11 is a printer device (recording device), and 17 is a large-capacity paper feeding device.
The recording paper 15 supplied from the paper feeding device 17 is printed by the printer device 11, is conveyed by the conveying device 18, is ejected onto the paper placing table 20 in the ejecting device 10, and is accommodated in the accommodating chamber 19. It is like this.

【0013】この画像形成装置システムは、大量の記録
用紙15に連続して印字できることを目的としたもので
あり、そのために排紙装置10も給紙装置17も共に2
000枚以上の記録用紙15が収納できる大容量のもの
が用いられている。
This image forming apparatus system is intended for continuous printing on a large amount of recording paper 15, and therefore, both the paper discharge device 10 and the paper feeding device 17 have two units.
A large-capacity one that can store 000 or more recording sheets 15 is used.

【0014】排紙装置10は図2に示すように、図外右
方のプリンタ装置11から搬送装置18により1枚ずつ
収納室19に搬送されてきた記録用紙15を上に載置す
る紙載置台20を有している。この紙載置台20は、駆
動手段としての載置台駆動用モータ35(図4参照)に
より駆動されて、上昇したり下降したりすることができ
る。
As shown in FIG. 2, the paper discharge device 10 is a paper loading device for placing the recording papers 15 conveyed one by one from the printer device 11 on the right side outside the drawing into the storage chamber 19 by the conveying device 18. It has a table 20. The paper table 20 can be moved up and down by being driven by a table driving motor 35 (see FIG. 4) as a driving means.

【0015】搬送装置18の下部と収納室19との間の
壁部22の破線の円A部位置には、図3に示すような上
限・用紙センサ25(上限検知手段、用紙検知手段)が
設けられている。
An upper limit / paper sensor 25 (upper limit detecting means, paper detecting means) as shown in FIG. 3 is provided at the position of the broken line circle A of the wall 22 between the lower portion of the conveying device 18 and the storage chamber 19. It is provided.

【0016】上限・用紙センサ25は、静止部に固定さ
れたフォトセンサ27と、軸28の回りに回動可能に設
けられたセンサアーム30と、センサアーム30と一体
的に回動可能に設けられた遮光板32とを有している。
The upper limit / sheet sensor 25 is provided with a photo sensor 27 fixed to a stationary portion, a sensor arm 30 rotatably provided around a shaft 28, and a sensor arm 30 rotatably integrally with the sensor arm 30. And a light shielding plate 32 that is formed.

【0017】上限・用紙センサ25は図3(a)に示す
ように、センサアーム30に何も接触してないときは遮
光板32がフォトセンサ27の光を遮断し、図3(b)
に示すように、センサアーム30に記録用紙15(又は
紙載置台20)が接触して押圧したときは、センサアー
ム30及び遮光板32が図中反時計回り方向に回動し
て、遮光板32はフォトセンサ27から外れてフォトセ
ンサ27は受光状態となる。
As shown in FIG. 3A, the upper limit / sheet sensor 25 blocks the light from the photo sensor 27 by the light shield plate 32 when nothing touches the sensor arm 30, and FIG.
As shown in FIG. 3, when the recording paper 15 (or the paper placing table 20) contacts and presses the sensor arm 30, the sensor arm 30 and the light shielding plate 32 rotate in the counterclockwise direction in the drawing to move the light shielding plate. 32 is removed from the photo sensor 27, and the photo sensor 27 enters a light receiving state.

【0018】図4は排紙装置10の回路構成を示すブロ
ック図であり、符号25は上述した上限・用紙センサ、
29は紙載置台20上に記録用紙15を受ける前の準備
段階で、押圧することにより紙載置台20を上限位置に
上昇させるためのリセットスイッチである。26は紙載
置台20が下限位置に来たことを検知する載置台下限セ
ンサである。35は紙載置台20の上下動を駆動する載
置台駆動用モータである。
FIG. 4 is a block diagram showing a circuit configuration of the paper discharge device 10, wherein reference numeral 25 is the above-mentioned upper limit / paper sensor,
Reference numeral 29 is a reset switch for raising the paper mounting table 20 to the upper limit position by pressing it in a preparatory stage before receiving the recording paper 15 on the paper mounting table 20. Reference numeral 26 is a mounting table lower limit sensor for detecting that the paper mounting table 20 has reached the lower limit position. Reference numeral 35 is a mounting table driving motor that drives the vertical movement of the sheet mounting table 20.

【0019】符号31は、上限・用紙センサ25,載置
台下限センサ26,リセットスイッチ29からの信号を
入力して、それらの信号に基づいてモータドライバ33
を介して載置台駆動用モータ35の駆動動作を制御す
る、CPU(制御手段)である。
Reference numeral 31 inputs signals from the upper limit / paper sensor 25, the mounting table lower limit sensor 26, and the reset switch 29, and based on these signals, the motor driver 33.
It is a CPU (control means) that controls the drive operation of the mounting table drive motor 35 via the.

【0020】符号37、はユーザへの警報、作動状態等
を表示する、液晶等を用いた表示手段である。モータド
ライバ33からCPU31には過電流検出信号が出力さ
れ、この信号が出力されたらCPU31は載置台駆動用
モータ35の回転を停止させてモータ35を過電流から
保護する。
Reference numeral 37 is a display means using a liquid crystal or the like for displaying a warning to the user, an operating state and the like. An overcurrent detection signal is output from the motor driver 33 to the CPU 31, and when this signal is output, the CPU 31 stops the rotation of the mounting table driving motor 35 and protects the motor 35 from overcurrent.

【0021】このような排紙装置10の動作について、
以下に図1ないし図5を用いて説明する。図1のプリン
タ装置11が印字動作を開始する前に、図4に示す排紙
装置10のリセットスイッチ29を人間の手で操作して
ONさせることにより、載置台駆動用モータ35がCP
U31に制御されて、上に何も載置されてない空の状態
の紙載置台20が上昇していく。
Regarding the operation of the paper discharge device 10 as described above,
A description will be given below with reference to FIGS. 1 to 5. Before the printer device 11 in FIG. 1 starts the printing operation, the reset switch 29 of the paper discharge device 10 shown in FIG. 4 is manually turned on to turn on the mounting table drive motor 35.
Under the control of U31, the empty paper placing table 20 with nothing placed thereon rises.

【0022】上昇してきた紙載置台20が上限・用紙セ
ンサ25のセンサアーム30に接触して、そのセンサア
ーム30を図3において軸28の回りに反時計回り方向
に回動させ、これにより図3(a)から図3(b)に示
すように遮光板32がフォトセンサ27から外れて、上
限・用紙センサ25は紙載置台20が上限位置に来たこ
とを検知する。
The ascending paper placing table 20 contacts the sensor arm 30 of the upper limit / paper sensor 25, and the sensor arm 30 is rotated counterclockwise around the shaft 28 in FIG. As shown in FIG. 3A to FIG. 3B, the light shielding plate 32 is removed from the photo sensor 27, and the upper limit / paper sensor 25 detects that the paper placing table 20 has reached the upper limit position.

【0023】上限・用紙センサ25はこの検知信号をC
PU31に送り、CPU31はこれを受けて載置台駆動
用モータ35を制御して停止、逆転させ、紙載置台20
を設定量(例えば1cm位)だけ下降させる。このため
センサアーム30から紙載置台20が離れて、センサア
ーム30はその重量バランスにより図3中の時計回り方
向に回動して再び図3(a)に示す状態に戻る。この状
態で準備段階が終了し、プリンタ装置11に印字動作を
開始させる。
The upper limit / paper sensor 25 sends this detection signal to C
The paper is sent to the PU 31, and the CPU 31 receives it and controls the loading table driving motor 35 to stop and reverse the rotation of the loading table 20.
Is lowered by a set amount (for example, about 1 cm). Therefore, the paper mounting table 20 is separated from the sensor arm 30, and the sensor arm 30 rotates clockwise in FIG. 3 due to its weight balance, and returns to the state shown in FIG. 3A again. In this state, the preparation stage ends, and the printer device 11 starts the printing operation.

【0024】給紙装置17から供給された記録用紙15
はプリンタ装置11により印字されて、搬送装置18に
より送られて排紙装置10の収納室19内に排紙され
る。排紙されてきた記録用紙15は、上限位置より設定
量だけ下がった高さ位置にある紙載置台20の上に載置
され、記録用紙15は次々と紙載置台20の上に載置さ
れて積み上げられ、たまっていく。
Recording paper 15 supplied from paper supply device 17
Is printed by the printer device 11, sent by the transport device 18, and discharged into the storage chamber 19 of the paper discharge device 10. The discharged recording paper 15 is placed on the paper placing table 20 at a height position lower than the upper limit position by a set amount, and the recording sheets 15 are successively placed on the paper placing table 20. Are piled up and accumulated.

【0025】このようにして記録用紙15が紙載置台2
0上に所定量たまると記録用紙15は、図3(b)に示
すようにセンサーアーム30を回動させて遮光板32を
フォトセンサ27から外し、上限・用紙センサ25は記
録用紙15が所定量たまったことを検知する。
In this way, the recording paper 15 is placed on the paper table 2.
When a predetermined amount is accumulated on the recording paper 15, the sensor arm 30 is rotated to remove the light shielding plate 32 from the photo sensor 27 as shown in FIG. Detect a fixed amount.

【0026】上限・用紙センサ25はこの検知信号をC
PU31に送り、CPU31はこの検知信号の入力を継
続して2秒計測すると、載置台駆動用モータ35を制御
して紙載置台20を再び設定量だけ下降させる。すると
センサアーム30は再び図3(a)に示す状態に戻り、
さらに紙載置台20上に記録用紙15が次々と載置され
ていく。
The upper limit / paper sensor 25 sends this detection signal to C
When the CPU 31 continues to input this detection signal and measures for 2 seconds, the CPU 31 controls the table driving motor 35 to lower the sheet table 20 again by the set amount. Then, the sensor arm 30 returns to the state shown in FIG.
Further, the recording paper 15 is placed on the paper placing table 20 one after another.

【0027】紙載置台20が下降している間でも記録用
紙15は休むことなく次々と紙載置台20上に載置され
ていく。そして再び紙載置台20上に所定量の記録用紙
15がたまって2秒を計測すると、CPU31は紙載置
台20を再び設定量だけ下降させる。このようにして紙
載置台20は間欠的に下降と停止を繰り返して下降して
いく。
The recording sheets 15 are placed on the paper placing table 20 one after another without a break even while the paper placing table 20 is descending. Then, when a predetermined amount of the recording paper 15 is accumulated on the paper placing table 20 again and 2 seconds are measured, the CPU 31 again lowers the paper placing table 20 by the set amount. In this way, the paper table 20 intermittently descends by repeatedly descending and stopping.

【0028】紙載置台20が下降していくと、やがて載
置台下限センサ26が紙載置台20が下限位置に来たこ
とを検知する。載置台下限センサ26はこの検知信号を
CPU31に送り、CPU31はこれを受けて載置台駆
動用モータ35を制御してその回転を停止させる。
As the paper placing table 20 descends, the placing table lower limit sensor 26 eventually detects that the paper placing table 20 has reached the lower limit position. The mounting table lower limit sensor 26 sends this detection signal to the CPU 31, and the CPU 31 receives this signal and controls the mounting table driving motor 35 to stop its rotation.

【0029】このとき表示手段37に紙載置台20が下
限位置に来たことを表示させると共に、プリンタ装置1
1に信号を送ってその印字動作を停止させ、このことに
より紙詰まり等の不都合を防止することができる。
At this time, the display unit 37 displays that the paper placing table 20 has reached the lower limit position, and the printer device 1
1 to send a signal to stop the printing operation, thereby preventing inconvenience such as paper jam.

【0030】ここで排紙装置10の紙載置台20の上か
ら記録用紙15を取出すと共に、給紙装置17に新しい
記録用紙15を補給して、上述した準備動作が完了した
ら再びプリンタ装置11に印字動作をさせる。再び排紙
装置10は、排紙されてきた記録用紙15を紙載置台2
0の上に載置させて、上述した紙載置台20の間欠的な
下降、停止の動作を繰り返す。このようにして2000
枚以上の記録用紙15を連続して印字させることができ
る。
Here, the recording paper 15 is taken out from the paper placing table 20 of the paper discharge device 10 and a new recording paper 15 is replenished to the paper feeding device 17, and when the above-mentioned preparation operation is completed, the printer device 11 is again supplied. Perform printing operation. The paper discharge device 10 again causes the recording paper 15 that has been discharged to be placed on the paper mounting table 2
0, and the intermittent lowering and stopping operations of the paper placing table 20 described above are repeated. 2000 in this way
More than one recording sheet 15 can be printed continuously.

【0031】なお、上記実施例においては上限・用紙セ
ンサ25が、紙載置台20が上限位置に来たこと、また
は記録用紙15が所定量たまったことを検知すると、そ
の遮光板32がフォトセンサ27から外れて、フォトセ
ンサ27に受光させるようになっていたが、逆に、上記
のことを検知すると遮光板32がフォトセンサ27を遮
光するようにしてもよい。
In the above embodiment, when the upper limit / paper sensor 25 detects that the paper placing table 20 has reached the upper limit position or the recording paper 15 has accumulated a predetermined amount, the light shielding plate 32 of the light shielding plate 32 is detected. Although the photo sensor 27 is separated from the photo sensor 27, the light shield plate 32 may shield the photo sensor 27 from light when the above is detected.

【0032】また、上記実施例においては上限・用紙セ
ンサ25にフォトセンサ27を用いていたが、同様の目
的を達成できるものであれば、フォトセンサに限定する
こと無く、他の種類のセンサを用いて上限・用紙センサ
25を構成してもよい。
In the above embodiment, the photo sensor 27 is used as the upper limit / paper sensor 25. However, the photo sensor is not limited to the photo sensor as long as the same purpose can be achieved, and other types of sensors can be used. The upper limit / paper sensor 25 may be configured by using the above.

【0033】[0033]

【発明の効果】以上説明したように本発明によれば、排
紙量が多いか少ないかにかかわらず、その排紙状況に応
じて、記録用紙が排紙されている間はいつでも最適な使
用状態を維持、実現することにより、排紙装置の機能、
信頼性を向上させることができる。
As described above, according to the present invention, regardless of whether the amount of discharged paper is large or small, optimum use is always possible while the recording paper is discharged, depending on the discharge status. By maintaining and realizing the state, the function of the paper discharge device,
The reliability can be improved.

【0034】また、上限検知手段と用紙検知手段の2つ
の検知手段を1つの検知手段で兼用することにより、部
品点数の増加を防止してコストアップを防止することが
できると共に、部品を設けるためのスペースが狭くなる
の防止することができ、装置内のレイアウト上有利とな
る。
Also, by using two detection means, the upper limit detection means and the paper detection means, as one detection means, it is possible to prevent an increase in the number of parts and prevent a cost increase, and to provide parts. It is possible to prevent the space from being narrowed, which is advantageous in layout in the device.

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

【図1】本発明の一実施例に係る排紙装置10を用いた
画像形成装置システムを示す側面断面図である。
FIG. 1 is a side sectional view showing an image forming apparatus system using a paper discharge device 10 according to an embodiment of the present invention.

【図2】排紙装置10の側面断面図である。FIG. 2 is a side sectional view of the paper discharge device 10.

【図3】上限・用紙センサ25の構成及び動作状態を示
す図であり、図3(a)はフォトセンサ27の光が遮断
されている状態を示す図、図3(b)はフォトセンサ2
7の光が受光されている状態を示す図である。
3A and 3B are diagrams showing a configuration and an operating state of an upper limit / paper sensor 25, FIG. 3A is a diagram showing a state where light of a photosensor 27 is blocked, and FIG. 3B is a photosensor 2;
It is a figure which shows the state in which the light of 7 is received.

【図4】排紙装置10の回路構成を示すブロック図であ
る。
FIG. 4 is a block diagram showing a circuit configuration of the paper discharge device 10.

【符号の説明】[Explanation of symbols]

10 排紙装置 11 プリンタ装置 15 記録用紙 17 給紙装置 18 搬送装置 19 収納室 20 紙載置台 22 壁部 25 上限・用紙センサ 26 載置台下限センサ 27 フォトセンサ 28 軸 29 リセットスイッチ 30 センサアーム 31 CPU 32 遮光板 33 モータドライバ 35 載置台駆動用モータ 37 表示手段 10 Paper Ejection Device 11 Printer Device 15 Recording Paper 17 Paper Feeding Device 18 Conveying Device 19 Storage Room 20 Paper Placement Table 22 Wall 25 Upper Limit / Paper Sensor 26 Placement Lower Limit Sensor 27 Photo Sensor 28 Axis 29 Reset Switch 30 Sensor Arm 31 CPU 32 light-shielding plate 33 motor driver 35 mounting table drive motor 37 display means

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 記録装置から1枚ずつ搬送されてきた記
録用紙を上に載置する紙載置台と、 前記紙載置台の上下動を駆動する駆動手段と、 前記紙載置台が上限位置に来たことを検知する上限検知
手段と、 前記紙載置台の上の記録用紙が所定量たまったことを検
知する用紙検知手段と、 前記上限検知手段が前記紙載置台が上限位置に来たこと
を検知したとき、又は前記用紙検知手段が記録用紙が前
記紙載置台の上に所定量たまったことを検知したときは
前記紙載置台を設定量だけ下降させるよう前記駆動手段
を制御する制御手段とを備え、 前記上限検知手段及び前記用紙検知手段の2つの検知手
段を1つの検知手段で兼用させたことを特徴とする排紙
装置。
1. A paper placing table on which a recording sheet conveyed one by one from a recording device is placed, a driving unit for driving the up and down movement of the paper placing table, and the paper placing table at an upper limit position. An upper limit detecting means for detecting that the paper placing table has reached an upper limit position, a sheet detecting means for detecting that a predetermined amount of recording sheets on the paper placing table have accumulated, When detecting that the paper is detected or when the paper detecting means detects that a predetermined amount of recording paper has accumulated on the paper mounting table, the control means for controlling the driving means to lower the paper mounting table by a set amount. 2. A paper discharge device comprising: the upper limit detection unit and the sheet detection unit, and one detection unit also serves as the upper limit detection unit and the sheet detection unit.
JP18179794A 1994-07-11 1994-07-11 Paper discharging device Pending JPH0826568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18179794A JPH0826568A (en) 1994-07-11 1994-07-11 Paper discharging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18179794A JPH0826568A (en) 1994-07-11 1994-07-11 Paper discharging device

Publications (1)

Publication Number Publication Date
JPH0826568A true JPH0826568A (en) 1996-01-30

Family

ID=16107033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18179794A Pending JPH0826568A (en) 1994-07-11 1994-07-11 Paper discharging device

Country Status (1)

Country Link
JP (1) JPH0826568A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011148616A (en) * 2010-01-22 2011-08-04 Canon Inc Sheet loading device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011148616A (en) * 2010-01-22 2011-08-04 Canon Inc Sheet loading device

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