JPH08277055A - Copier - Google Patents
CopierInfo
- Publication number
- JPH08277055A JPH08277055A JP7106878A JP10687895A JPH08277055A JP H08277055 A JPH08277055 A JP H08277055A JP 7106878 A JP7106878 A JP 7106878A JP 10687895 A JP10687895 A JP 10687895A JP H08277055 A JPH08277055 A JP H08277055A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- transfer paper
- copying machine
- fan
- discharged
- 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
Landscapes
- Pile Receivers (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は複写機に関し、特に、本
体の後部上面の排紙口に定着ユニットから排出された転
写紙を複数枚縦方向にストックする縦排紙型の複写機に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine, and more particularly to a vertical discharge type copying machine for vertically stocking a plurality of transfer sheets discharged from a fixing unit at a discharge port on a rear upper surface of a main body.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】図４で
示すように、従来の一般的な複写機は、水平方向から搬
送されてくる転写紙１を定着ユニット２から排出した後
も、転写紙１の進行（搬送）方向を変えることなく、ほ
ぼ水平に設置された排紙トレイ３上にストックするよう
になっている。このような複写機では、図７で示される
ように排紙トレイ３が装置本体４から大きくはみ出し、
そのはみ出し分だけ設置のための専有面積を大きく取ら
ざる得なかった。2. Description of the Related Art As shown in FIG. 4, in a conventional general copying machine, a transfer paper 1 conveyed from a horizontal direction is transferred even after being discharged from a fixing unit 2. The paper 1 is stocked on the paper discharge tray 3 installed substantially horizontally without changing the traveling (conveying) direction. In such a copying machine, as shown in FIG. 7, the sheet discharge tray 3 largely protrudes from the apparatus main body 4,
It was inevitable to take up a large amount of private area for the installation only for the protrusion.
【０００３】このような余分なスペースを小さくするた
め、図５に示すように、転写紙１を定着ユニット２から
曲率部５ａを有する排紙トレイ５と、これに対応する曲
率部６ａを有する装置本体４のガイドリブ６との間に排
出し、これらの曲率５ａ、６ａを利用して転写紙１の進
行方向を縦方向に変え、排紙後のストック方向を縦向き
にする構造が提案されている。このような複写機は、図
６に示すように給紙口７を装置本体４の前面側に、排紙
口８を装置本体４の後部上面に有する構造となる。なお
図６中、９は操作パネル、１０は圧板である。In order to reduce such an extra space, as shown in FIG. 5, a transfer sheet 1 is provided from a fixing unit 2 to a discharge tray 5 having a curved portion 5a, and an apparatus having a corresponding curved portion 6a. A structure is proposed in which the transfer paper 1 is discharged between the guide ribs 6 of the main body 4 and the curvatures 5a and 6a are used to change the traveling direction of the transfer paper 1 to the vertical direction so that the stock direction after the discharge is vertical. There is. As shown in FIG. 6, such a copying machine has a structure in which the paper feed port 7 is provided on the front side of the apparatus body 4 and the paper ejection port 8 is provided on the upper rear surface of the apparatus body 4. In FIG. 6, 9 is an operation panel and 10 is a pressure plate.
【０００４】このような構造にすると、転写紙１は排紙
トレイ５上で途中が曲がった状態でストックされること
となる。この転写紙１の曲がり部分を以下では転写紙の
曲率部１ａという。この場合、転写紙１自体が持つコシ
により、曲率部１ａには元に戻ろうとする反力Ｆが働
き、転写紙１の曲率部１ａとガイドリブ６の曲率部６ａ
とが接触する。また、ストックされる転写紙１の量が増
すに連れて反力Ｆは増加する。そしてある程度の枚数の
転写紙１がストックされ、反力Ｆが増してしまうと、後
から排出されてきた転写紙１の先端部が曲率部１ａ、６
ａの接触部位を通過しようとするときに、反力Ｆによっ
て摩擦が発生して通過することができず、いわゆる排紙
ジャム（紙詰まり）が発生しやすくなるという問題点が
あった。With such a structure, the transfer paper 1 is stocked on the paper discharge tray 5 in a bent state. The curved portion of the transfer sheet 1 will be hereinafter referred to as a curved portion 1a of the transfer sheet. In this case, due to the elasticity of the transfer paper 1 itself, a reaction force F for returning to the original state acts on the curvature portion 1a, and the curvature portion 1a of the transfer paper 1 and the curvature portion 6a of the guide rib 6 are provided.
Come into contact with. Further, the reaction force F increases as the amount of stocked transfer paper 1 increases. Then, when a certain number of sheets of the transfer paper 1 are stocked and the reaction force F increases, the front end portion of the transfer paper 1 ejected afterwards has the curved portions 1a and 6a.
When attempting to pass through the contact portion a, friction occurs due to the reaction force F so that it cannot pass through, and so-called paper discharge jam (paper jam) is likely to occur.
【０００５】本発明はこのような従来の縦排紙型の複写
機の問題点に鑑みてなしたもので、転写紙のストック枚
数が増えても排紙ジャムが発生する心配のない複写機を
提供することを目的とする。The present invention has been made in view of the above-mentioned problems of the conventional vertical discharge type copying machine. A copying machine which does not cause a discharge jam even if the stock number of transfer sheets increases is provided. The purpose is to provide.
【０００６】[0006]
【課題を解決するための手段】本発明に係る複写機は上
記目的を達成するために、給紙口を複写機本体の前面側
に有し、かつ排紙口を複写機本体の後部上面に有し、該
排紙口に向けて定着ユニットから排出された転写紙の進
行方向を水平から縦方向に変える一の曲率部を排紙トレ
イに設け、かつ排紙された転写紙の挙動を抑えるための
他の曲率部を上記一の曲率部と対向する装置本体のガイ
ドリブに設け、排紙された転写紙を複数枚縦方向にスト
ックする縦排紙を行なう複写機において、上記ガイドリ
ブの上記他の曲率部から上記排紙トレイの上記一の曲率
部に向けて送風し、排紙された転写紙を上記一の曲率部
へ押し付けるファンを備える構成としたものである。In order to achieve the above object, a copying machine according to the present invention has a paper feed port on the front side of the copying machine body and a paper discharge port on the upper rear surface of the copying machine body. The discharge tray is provided with one curvature portion that changes the traveling direction of the transfer sheet discharged from the fixing unit toward the sheet discharge port from the horizontal direction to the vertical direction, and suppresses the behavior of the discharged transfer sheet. In a copying machine for vertically ejecting a plurality of discharged transfer sheets in the vertical direction, a guide rib of the apparatus main body is provided with another curvature portion for Is configured to include a fan that blows air from the curved portion to the one curved portion of the paper discharge tray and presses the discharged transfer paper to the one curved portion.
【０００７】本発明に係る複写機は、上記ファンの風量
を、転写紙の排出タイミングにより変化させる手段を有
する構成とすることもできる。The copying machine according to the present invention may be constructed so as to have means for changing the air volume of the fan according to the discharge timing of the transfer paper.
【０００８】本発明に係る複写機は、上記ファンに代え
て、上記ガイドリブの上記他の曲率部に半月コロを回転
可能に設けた構成とすることもできる。In the copying machine according to the present invention, instead of the fan, a half-moon roller may be rotatably provided on the other curvature portion of the guide rib.
【０００９】[0009]
【実施例】以下本発明の実施例を図面を参照して説明す
る。なお以下では従来と共通する部分には共通する符号
を付して説明する。Embodiments of the present invention will be described below with reference to the drawings. It should be noted that in the following description, the parts common to the conventional ones will be denoted by the common reference numerals.
【００１０】図１は本発明に係る複写機の第１実施例を
示す断面図である。この実施例の複写機は、ガイドリブ
６の曲率部６ａ側から排紙トレイ５の曲率部５ａに向け
て送風するファン１１を有する。ファン１１は専用のも
のを装置本体４内に設けるようにしても良いが、一般に
複写機には装置本体４内の冷却のための冷却ファンを有
するので、これを利用する構造とすることもできる。FIG. 1 is a sectional view showing a first embodiment of a copying machine according to the present invention. The copying machine of this embodiment has a fan 11 that blows air from the side of the curved portion 6a of the guide rib 6 toward the curved portion 5a of the discharge tray 5. A dedicated fan 11 may be provided inside the apparatus main body 4, but since a copying machine generally has a cooling fan for cooling the inside of the apparatus main body 4, it may be configured to utilize this. .
【００１１】この実施例では、排紙トレイ５上にストッ
クされた排紙済の転写紙１に対してファン１１により風
を吹き付け、転写紙１とガイドリブ６とが接触しないよ
うに転写紙１を排紙トレイ５に押し付け、後から排出さ
れる転写紙１の通路を確保することにより排紙ジャムの
発生を防止している。In this embodiment, the fan 11 blows air onto the discharged transfer paper 1 stocked on the paper discharge tray 5 to prevent the transfer paper 1 and the guide ribs 6 from contacting each other. The occurrence of a paper discharge jam is prevented by pressing the paper against the paper discharge tray 5 and securing a passage for the transfer paper 1 to be discharged later.
【００１２】ところでファン１１に光学ユニット内を冷
却する冷却ファンを兼用した場合、冷却のためには風量
が多いほど良いが、風量が多すぎると図１中に矢印Ｇで
示すように風が転写紙１の下側にまわり込んで転写紙１
の先端をガイドリブ６に押し付け、排紙ジャムを引き起
こしやすくなる。そこで、転写紙１の先端がガイドリブ
６の曲率部６ａ付近に搬送されるまでは、ファン１１の
風量を押さえて転写紙１下側へまわり込む風Ｇが生じな
い風量以下とし、転写紙１の先端がガイドリブ６の曲率
部６ａ付近（ファン１１の風が転写紙１の先端に直接に
当たる範囲）まで搬送されたタイミングでファン１１の
風量をアップするようにファン１１の風量を制御すると
よい。このような制御に用いるセンサー、制御装置等に
ついては公知のものを種々採用できる。When the fan 11 also serves as a cooling fan for cooling the inside of the optical unit, the larger the air volume is, the better for cooling. However, if the air volume is too large, the air is transferred as shown by an arrow G in FIG. Transfer paper 1 around the bottom of paper 1
The leading end of the sheet is pressed against the guide rib 6 to easily cause a paper discharge jam. Therefore, until the front end of the transfer paper 1 is conveyed to the vicinity of the curved portion 6a of the guide rib 6, the air flow rate of the fan 11 is suppressed to be equal to or less than the air flow G at which the air G that goes around to the lower side of the transfer paper 1 does not occur. It is advisable to control the air volume of the fan 11 so that the air volume of the fan 11 is increased at the timing when the tip is conveyed to the vicinity of the curvature portion 6a of the guide rib 6 (the range where the air of the fan 11 directly hits the tip of the transfer paper 1). Various well-known sensors, control devices, etc. can be adopted for such control.
【００１３】図２、３は本発明に係る複写機の第２実施
例を示す断面図である。この実施例の複写機は、ガイド
リブ６にゴム製の半月コロ１２を設けたものである。半
月コロ１２は、その外周円の中心を回転中心とし、この
回転中心をガイドリブ６の曲率部６ａの中心と同位置と
する。また、外周上の周速度は転写紙１の移動速度より
も速く設定し、回転を開始するタイミングは図３で示す
ように速くとも転写紙１が半月コロ１２の外周軌跡（Ｘ
点）に到達してからとする。2 and 3 are sectional views showing a second embodiment of the copying machine according to the present invention. The copying machine of this embodiment has a guide rib 6 provided with a half-moon roller 12 made of rubber. The half-moon roller 12 has its center of rotation as the center of rotation, and this center of rotation is at the same position as the center of the curvature portion 6 a of the guide rib 6. Further, the peripheral speed on the outer circumference is set to be higher than the moving speed of the transfer paper 1, and the timing at which the rotation starts is as fast as shown in FIG.
After reaching point).
【００１４】このようにすると、すでに排紙トレイ５上
にストックされた転写紙１を半月コロ１２によって上方
向（矢印Ｙ）に押し上げることなく、後から排出された
転写紙１を半月コロ１２の回転と、転写紙１と半月コロ
１２との間の摩擦により搬送することできる。但し、図
２のように半月コロ１２がガイドリブ６内に納まってい
る間は、転写紙１が搬送されないためにたるみが生じる
が、前述のように転写紙１の移動速度よりも半月コロ１
２の外周速度を速く設定しているため、半月コロ１２が
転写紙１を搬送している間にこのようなたるみは解消さ
れる。In this way, the transfer papers 1 that have been already discharged are not pushed up by the half-moon roller 12 in the upward direction (arrow Y) by the half-moon roller 12, and the transfer papers 1 that are discharged later are transferred to the half-moon roller 12. It can be conveyed by rotation and friction between the transfer paper 1 and the half-moon roller 12. However, while the half-moon roller 12 is accommodated in the guide rib 6 as shown in FIG. 2, slack occurs because the transfer sheet 1 is not conveyed. As described above, the half-moon roller 1 is faster than the moving speed of the transfer sheet 1.
Since the outer peripheral speed of 2 is set high, such slack is eliminated while the half-moon roller 12 conveys the transfer paper 1.
【００１５】[0015]
【発明の効果】請求項１に係る複写機は、縦方向でスト
ックされた転写紙をファンで排紙トレイに押し付けるよ
うにしたので、転写紙とガイドリブとの接触を解消で
き、これによって後から排出される転写紙が排出されず
に詰まることがなくなるという効果がある。In the copying machine according to the first aspect of the present invention, the transfer paper stocked in the vertical direction is pressed against the paper discharge tray by the fan, so that the contact between the transfer paper and the guide rib can be eliminated, whereby the transfer paper can be removed later. There is an effect that the ejected transfer paper is not ejected and is not jammed.
【００１６】請求項２に係る複写機は、ファンの風量を
転写紙の排出タイミングによって制御するようにしたの
で、上記共通の効果に加え、ファンからの風が転写紙の
下側へまわり込んで転写紙をガイドリブに接触させてし
まうことがなくなり、いっそうスムーズに転写紙を搬
送、排出することができるようになるという効果があ
る。In the copying machine according to the second aspect of the present invention, the air volume of the fan is controlled by the discharge timing of the transfer paper. Therefore, in addition to the above common effects, the wind from the fan wraps around the lower side of the transfer paper. The transfer paper is not brought into contact with the guide ribs, and the transfer paper can be more smoothly conveyed and discharged.
【００１７】請求項３に係る複写機は、ガイドリブに半
月コロを回転可能に設けたので、上記共通の効果に加
え、転写紙の移動速度よりこの半月コロの外周の周速度
を速く設定して既に排出され排紙トレイ上にストックさ
れている転写紙を上方向へ押し上げずに後から排出され
る転写紙にジャム発生の原因となり得るたるみを発生さ
せずにスムーズに排紙することができるようになるとい
う効果がある。In the copying machine according to the third aspect, since the half-moon roller is rotatably provided on the guide rib, the peripheral speed of the outer circumference of the half-moon roller is set higher than the moving speed of the transfer paper in addition to the common effect. Without pushing up the transfer paper that has already been discharged and stocked on the discharge tray in the upward direction, it is possible to smoothly discharge the transfer paper that is discharged later without causing slack that may cause a jam. Has the effect of becoming.
【図１】本発明に係る複写機の第１実施例を示す断面図
である。FIG. 1 is a sectional view showing a first embodiment of a copying machine according to the present invention.
【図２】本発明に係る複写機の第２実施例を示す断面図
である。FIG. 2 is a sectional view showing a second embodiment of the copying machine according to the present invention.
【図３】図３の複写機の部分拡大断面図である。3 is a partially enlarged sectional view of the copying machine shown in FIG.
【図４】一般的な水平排紙の複写機の構造を示す断面図
である。FIG. 4 is a cross-sectional view showing the structure of a general horizontal discharge copying machine.
【図５】従来の縦排紙の複写機の構造を示す断面図であ
る。FIG. 5 is a cross-sectional view showing the structure of a conventional vertically ejected copying machine.
【図６】従来の縦排紙の複写機の外観を示す斜視図であ
る。FIG. 6 is a perspective view showing the external appearance of a conventional vertically ejected copying machine.
１ 転写紙 ４ 装置本体 ５ 排紙トレイ ５ａ 排紙トレイの曲率部 ６ ガイドリブ ６ａ ガイドリブの曲率部 １１ ファン １２ 半月コロ 1 Transfer Paper 4 Device Main Body 5 Paper Ejection Tray 5a Paper Ejection Tray Curvature 6 Guide Rib 6a Guide Rib Curvature 11 Fan 12 Half Moon Roll
Claims (3)
つ排紙口を複写機本体の後部上面に有し、該排紙口に向
けて定着ユニットから排出された転写紙の進行方向を水
平から縦方向に変える一の曲率部を排紙トレイに設け、
かつ排紙された転写紙の挙動を抑えるための他の曲率部
を上記一の曲率部と対向する装置本体のガイドリブに設
け、排紙された転写紙を複数枚縦方向にストックする縦
排紙を行なう複写機において、上記ガイドリブの上記他
の曲率部から上記排紙トレイの上記一の曲率部に向けて
送風し、排紙された転写紙を上記一の曲率部へ押し付け
るファンを備えることを特徴とする複写機。1. A transfer paper ejected from a fixing unit toward a paper ejection port having a paper feed port on the front side of the copier body and a paper ejection port on a rear upper surface of the copier body. The output tray has one curvature that changes the traveling direction from horizontal to vertical.
In addition, another curved portion for suppressing the behavior of the discharged transfer sheet is provided on the guide rib of the apparatus main body facing the one curved portion, and a plurality of discharged transfer sheets are vertically stocked for vertical discharge. In the copying machine for performing the above, a fan that blows air from the other curvature portion of the guide rib toward the one curvature portion of the paper discharge tray and presses the discharged transfer paper to the one curvature portion is provided. Characteristic copier.
ミングにより変化させる手段を有することを特徴とする
請求項１の複写機。2. The copying machine according to claim 1, further comprising means for changing the air volume of the fan according to the discharge timing of the transfer paper.
上記他の曲率部に半月コロを回転可能に設けたことを特
徴とする請求項１または２の複写機。3. The copying machine according to claim 1, wherein, instead of the fan, a half-moon roller is rotatably provided on the other curvature portion of the guide rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7106878A JPH08277055A (en) | 1995-04-05 | 1995-04-05 | Copier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7106878A JPH08277055A (en) | 1995-04-05 | 1995-04-05 | Copier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08277055A true JPH08277055A (en) | 1996-10-22 |
Family
ID=14444784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7106878A Pending JPH08277055A (en) | 1995-04-05 | 1995-04-05 | Copier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08277055A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005316067A (en) * | 2004-04-28 | 2005-11-10 | Canon Inc | Image forming apparatus |
| US7110694B2 (en) * | 2003-05-23 | 2006-09-19 | Kyocera Mita Corporation | Structure for cooling the interior of an image forming apparatus |
-
1995
- 1995-04-05 JP JP7106878A patent/JPH08277055A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7110694B2 (en) * | 2003-05-23 | 2006-09-19 | Kyocera Mita Corporation | Structure for cooling the interior of an image forming apparatus |
| US7359655B2 (en) | 2003-05-23 | 2008-04-15 | Kyocera Mita Corporation | Structure for cooling the interior of an image forming apparatus |
| US7630663B2 (en) | 2003-05-23 | 2009-12-08 | Kyocera Mita Corporation | Structure for cooling the interior of an image-forming apparatus |
| JP2005316067A (en) * | 2004-04-28 | 2005-11-10 | Canon Inc | Image forming apparatus |
| JP4700925B2 (en) * | 2004-04-28 | 2011-06-15 | キヤノン株式会社 | Image forming apparatus |
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