JP3379277B2 - Output tray of image forming device - Google Patents
Output tray of image forming deviceInfo
- Publication number
- JP3379277B2 JP3379277B2 JP10525495A JP10525495A JP3379277B2 JP 3379277 B2 JP3379277 B2 JP 3379277B2 JP 10525495 A JP10525495 A JP 10525495A JP 10525495 A JP10525495 A JP 10525495A JP 3379277 B2 JP3379277 B2 JP 3379277B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- printing paper
- discharge tray
- image forming
- forming apparatus
- 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 - Fee Related
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Pile Receivers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プリンタ及び複写機等
の画像形成装置に取付けられる排紙トレイの構造に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a paper discharge tray attached to an image forming apparatus such as a printer and a copying machine.
【０００２】[0002]
【従来の技術】一般にプリンタ及び複写機等の画像形成
装置においては、図４のごとく印刷済印字用紙（以下
「印字紙」と呼ぶ）を受け止める排紙トレイ４Ａがネジ
等によって画像形成装置１Ａに固定されている。同図中
１ａは印字紙の排出口である。このような排紙トレイ４
Ａにおいては画像形成装置１Ａから排出される印字紙の
整列性を良好なものとすることが要求されている。印字
紙の整列性は、排紙トレイ４Ａに積載される印字紙のカ
ール方向・腰の強さに依存していることから、従来、画
像形成装置１Ａの排出口１ａに位置する排出ローラと排
出ローラに相対するアイドラローラのニップ点近傍に山
形の突起を設け、印字紙に強制的にリブをつける、ま
た、排紙トレイ４Ａに上向きの勾配をつける等により、
排紙トレイ４Ａ上での用紙の不整列を防止する方法が実
施されている。2. Description of the Related Art Generally, in an image forming apparatus such as a printer and a copying machine, a discharge tray 4A for receiving printed printing paper (hereinafter referred to as "printing paper") is attached to the image forming apparatus 1A by screws or the like as shown in FIG. It is fixed. In the figure, reference numeral 1a is a printing paper discharge port. Such an output tray 4
In A, it is required that the print paper discharged from the image forming apparatus 1A has good alignment. Since the alignment of the print paper depends on the curl direction and the strength of the waist of the print paper stacked on the paper discharge tray 4A, conventionally, the discharge roller located at the discharge port 1a of the image forming apparatus 1A and the discharge roller are discharged. By providing a mountain-shaped projection near the nip point of the idler roller facing the roller, forcibly forming a rib on the printing paper, and by making an upward slope on the discharge tray 4A,
A method for preventing misalignment of sheets on the sheet discharge tray 4A is implemented.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述の
ような手段により排紙トレイ上での整列性を向上させよ
うとしても、前者の手段においては後者の手段と関連し
て、排出される印字紙が既に排紙トレイ上に積載されて
いる印字紙を連れ出してしまうという問題があった。ま
た、後者の手段においては、図３に示すように印字紙の
カールが水平方向に対して下向き３Ｂの場合は、良い整
列性の結果を得ることが出来たが、逆に印字紙のカール
方向が水平方向に対して上向き３Ａの場合には、排紙ト
レイは印字紙の上向きカールを助長する形状となるた
め、整列性をそこねるばかりでなく、収拾に苦しむ印字
紙ジャムの一因となる問題があった。また、従来の排紙
トレイの場合には、印字紙の進行方向に対して直角方向
の印字紙の整列性については格別な配慮が無く、用紙不
揃いとなる問題があった。However, even if it is attempted to improve the alignment on the discharge tray by the means as described above, the former means, in association with the latter means, ejects the printed paper. However, there is a problem that the printing paper already loaded on the paper ejection tray is taken out. Further, in the latter means, when the curl of the printing paper is 3B downward with respect to the horizontal direction as shown in FIG. 3, good alignment results could be obtained. Is 3 A upward with respect to the horizontal direction, the paper ejection tray has a shape that promotes upward curling of the printing paper, which not only impairs the alignment but also causes a jam of the printing paper that is difficult to collect. was there. Further, in the case of the conventional paper ejection tray, there is no particular consideration for the alignment of the printing paper in the direction perpendicular to the traveling direction of the printing paper, and there is a problem that the paper is misaligned.
【０００４】本発明の目的は、以上のような排紙トレイ
の問題に鑑み画像形成装置より排出される印字紙の整列
性を良好にする排紙トレイを提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a paper discharge tray which improves the alignment of printing paper discharged from an image forming apparatus in view of the above problems of the paper discharge tray.
【０００５】[0005]
【課題を解決するための手段】前記課題は、排紙トレイ
の印字紙積載面に印字紙の進行方向に沿って上向きの勾
配を急緩２段階に順に設定し、かつ、同印字紙積載面中
央部に印字紙の進行方向に沿って上流側から下流側に向
かって印字紙幅方向勾配が急勾配から緩勾配に変化する
山脈状の突出部を設け、また、印字紙積載面上に印字紙
幅方向にスライド可能な案内部材を設けることにより解
決される。Means for Solving the Problems The above-mentioned problem is to set an upward gradient on a printing paper stacking surface of a discharge tray along the traveling direction of the printing paper in two steps, that is, in order. At the center, a mountain-shaped protrusion that changes from a steep slope to a gentle slope in the width direction of the printing paper is provided from the upstream side to the downstream side along the traveling direction of the printing paper. The solution is to provide a guide member that is slidable in any direction.
【０００６】[0006]
【作用】本発明の画像形成装置の排紙トレイによれば、
画像形成装置より排出される印字紙のカールを矯正する
ことが可能となり、印字紙積載面上において印字紙の排
紙トレイからの飛び出しや落下、ジャムを防止し、印字
紙の整列性の向上をはかることが可能となる。さらに、
印字紙幅方向の整列性の向上をはかることが可能とな
る。According to the paper discharge tray of the image forming apparatus of the present invention,
It is possible to correct the curl of the printing paper discharged from the image forming device, prevent the printing paper from jumping out from the paper discharge tray, falling, and jamming on the printing paper stacking surface, and improve the alignment of the printing paper. It becomes possible to measure. further,
It is possible to improve the alignment in the width direction of the printing paper.
【０００７】[0007]
【実施例】本発明の１実施例を図１ないし図３を用いて
説明する。図１は、画像形成装置の全体構成を示す。同
図において画像形成装置１Ａの印字紙排出口１ａ近辺に
排紙トレイ１Ｂを設けてある。この排紙トレイ１Ｂは、
印字紙の落下を防ぐため印字紙の進行方向Ｘにそってや
や上向き勾配に形成されており、印字紙排出口１ａ側の
端部をはめこみ及びネジなどにより画像形成装置１Ａの
固定されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the overall configuration of the image forming apparatus. In the figure, a paper discharge tray 1B is provided near the print paper discharge port 1a of the image forming apparatus 1A. This paper discharge tray 1B is
In order to prevent the printing paper from falling, the printing paper is formed with a slight upward slope along the traveling direction X of the printing paper, and the image forming apparatus 1A is fixed by fitting the end portion on the printing paper discharge port 1a side with a screw or the like.
【０００８】排紙トレイ１Ｂの印字紙積載面１ｂの勾配
は図２のごとく画像形成装置１Ａへの固定部２Ａより進
行方向Ｘに沿って上向きの勾配を急緩２段階に順に設定
され、それぞれ水平方向に対し上向き角度２ａ、２ｂを
有している。平面であるこの２段階の角度２ａ、２ｂの
値は、角度２ａは２０°〜３０°に設定されており角度
２ｂは５°〜１５°に設定されている。また、排紙トレ
イ１Ｂの印字紙積載面１ｂ***部には、印字紙の進行
方向に沿って上流側から下流側に向かって印字紙幅方向
勾配が急勾配から緩勾配に変化する山脈状の突出部１ｃ
が設けられている。この山脈状の突出部１ｃは印字紙の
進行方向Ｘに沿って中央部が盛り上がっており、この盛
り上がり稜線と水平方向とのおりなす角度は、図２の角
度２ｃのごとく２０°〜３０°に設定されている。ま
た、この突出部１ｃの印字紙進行方向の下流側端部の印
字紙積載面１ｂに対する高さ２ｄは、ほぼ２０mm程度が
適当である。また、排紙トレイ１Ｂの印字紙幅方向両側
には印字紙突き当て部材１ｄ、１ｅを有しており、この
印字紙突き当て部材１ｄ、１ｅは、印字紙サイズに合わ
せてスライド可能に設けられている。As shown in FIG. 2, the gradient of the printing paper stacking surface 1b of the paper discharge tray 1B is set in a two-step manner in which the upward gradient from the fixing portion 2A to the image forming apparatus 1A along the traveling direction X is suddenly increased. It has upward angles 2a and 2b with respect to the horizontal direction. Regarding the values of the two stages of angles 2a and 2b which are planes, the angle 2a is set to 20 ° to 30 ° and the angle 2b is set to 5 ° to 15 °. Further, in the central portion on the printing paper stacking surface 1b of the discharge tray 1B, a mountain range shape in which the printing paper width direction gradient changes from a steep slope to a gentle slope from the upstream side to the downstream side along the traveling direction of the printing paper. Projection 1c
Is provided. The central portion of the mountain-shaped protruding portion 1c is raised along the traveling direction X of the printing paper, and the angle formed by the raised ridge line and the horizontal direction is set to 20 ° to 30 ° as shown by the angle 2c in FIG. Has been done. The height 2d of the downstream end of the protruding portion 1c in the printing paper advancing direction with respect to the printing paper stacking surface 1b is preferably about 20 mm. Further, print paper abutting members 1d and 1e are provided on both sides of the paper discharge tray 1B in the print paper width direction. The print paper abutting members 1d and 1e are slidably provided in accordance with the print paper size. There is.
【０００９】本実施例は以上のような構造であるから、
図３に示すように印字紙の用紙カール方向が上向きカー
ル３Ａの場合は、排紙トレイ１Ｂの急緩２段階の勾配角
度２ａ、２ｂにより下向きに矯正されることになり、そ
の結果印字紙積載面１Ｂに積載された印字紙の形状が安
定し、印字紙の整列性が格段に向上する。一方、図３に
示すように用紙カール方向が下向きカール３Ｂの場合
は、印字紙積載面１Ｂ***部の印字紙の進行方向に沿
って上流側から下流側に向かって印字紙幅方向勾配が急
勾配から緩勾配に変化する山脈状の突出部１ｃを設けた
ことにより、下向きカール３Ｂが矯正され、上記と同様
に印字紙の整列性が格段に向上する。Since this embodiment has the above structure,
As shown in FIG. 3, when the paper curl direction of the print paper is the upward curl 3A, it is corrected downward by the two-step gradient angles 2a and 2b of the discharge tray 1B, and as a result, the print paper is stacked. The shape of the printing paper stacked on the surface 1B is stabilized, and the alignment of the printing paper is significantly improved. On the other hand, as shown in FIG. 3, when the paper curl direction is the downward curl 3B, the gradient in the print paper width direction is steep from the upstream side to the downstream side along the traveling direction of the print paper in the upper center portion of the print paper stacking surface 1B. The downward curl 3B is corrected by providing the mountain-shaped protruding portion 1c that changes from a gradient to a gentle gradient, and the alignment of the printing paper is significantly improved in the same manner as described above.
【００１０】また、図１のごとく印字紙積載面１Ｂ上に
印字紙幅方向にスライド可能な案内部材１ｄ、１ｅを設
けたので、印字紙のサイズに応じて印字紙幅方向の整列
性も更に向上する。Further, as shown in FIG. 1, since the guide members 1d and 1e slidable in the printing paper width direction are provided on the printing paper stacking surface 1B, the alignment property in the printing paper width direction is further improved according to the size of the printing paper. .
【００１１】[0011]
【発明の効果】以上のように、請求項１の発明によれば
排紙トレイの印字紙積載面に印字紙の進行方向に沿って
上向きの勾配を急緩２段階に順に設定し、また、同印字
紙積載面中央部に印字紙の進行方向に沿って上流側から
下流側に向かって印字紙幅方向勾配が急勾配から緩勾配
に変化する山脈状の突出部を設けたので、カール等で変
形した印字紙でも排紙トレイ印字紙積載面上で良好に矯
正することができ、印字紙の進行方向の整列性を格段に
向上させることができる。As described above, according to the first aspect of the present invention, the upward gradient is set in two stages in the printing paper stacking surface of the discharge tray along the traveling direction of the printing paper in order, and At the center of the printing paper stacking surface, a mountain range-like protrusion that changes the gradient in the width direction of the printing paper from a steep slope to a gentle slope is provided from the upstream side to the downstream side along the traveling direction of the printing paper. Even the deformed printing paper can be satisfactorily corrected on the printing paper stacking surface of the paper ejection tray, and the alignment in the traveling direction of the printing paper can be significantly improved.
【００１２】また、請求項２の発明によればこれに加え
て排紙トレイの印字紙積載面上に印字紙幅方向にスライ
ド可能な案内部材を設けたので、印字紙のサイズに応じ
て印字紙幅方向の整列性も合わせて向上させることがで
きる。According to the second aspect of the invention, in addition to this, since the guide member slidable in the width direction of the printing paper is provided on the printing paper stacking surface of the discharge tray, the printing paper width can be changed according to the size of the printing paper. The directional alignment can also be improved.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明に係る排紙トレイの１実施例を示す斜視
図である。FIG. 1 is a perspective view showing an embodiment of a paper discharge tray according to the present invention.
【図２】図１に示した排紙トレイの要部を示す側面図で
ある。FIG. 2 is a side view showing a main part of the paper discharge tray shown in FIG.
【図３】画像形成装置から排出される印字紙の排紙トレ
イ上のカール状態を示す側面図である。FIG. 3 is a side view showing a curled state of a print sheet discharged from the image forming apparatus on a sheet discharge tray.
【図４】従来の画像形成装置の排紙トレイを示す斜視図
である。FIG. 4 is a perspective view showing a discharge tray of a conventional image forming apparatus.
１Ａは画像形成装置、１Ｂは排紙トレイ、１ｂは印字紙
積載面、１ｃは山脈状の突出部、１ｄ、１ｅは案内部
材、２ａ、２ｂは印字紙積載面の勾配角度、２ｃは突出
部の勾配角度である。1A is an image forming apparatus, 1B is a paper ejection tray, 1b is a printing paper stacking surface, 1c is a mountain-shaped projecting portion, 1d and 1e are guide members, 2a and 2b are inclination angles of the printing paper stacking surface, and 2c is a projecting portion. Is the gradient angle of.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−171963（ＪＰ，Ａ) 実開 平６−83658（ＪＰ，Ｕ) 実開 平５−68971（ＪＰ，Ｕ) 実開 平２−132060（ＪＰ，Ｕ) 実開 平３−7153（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B65H 31/02 G03G 15/00 530 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-171963 (JP, A) Actual flat 6-83658 (JP, U) Actual flat 5-68971 (JP, U) Actual flat 2- 132060 (JP, U) Actual Kaihei 3-7153 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) B65H 31/02 G03G 15/00 530
Claims (2)
済印字用紙を、不揃い無く整列させるための排紙トレイ
であって、排紙トレイの印字紙積載面に印字紙の進行方
向に沿って上向きの勾配を急緩２段階に順に設定し、ま
た、同印字紙積載面中央部に印字紙の進行方向に沿って
上流側から下流側に向かって印字紙幅方向勾配が急勾配
から緩勾配に変化する山脈状の突出部を設けたことを特
徴とする画像形成装置の排紙トレイ。1. A discharge tray for aligning printed print sheets of an image forming apparatus such as a printer or a copying machine without unevenness, the print sheet stacking surface of the discharge tray along the traveling direction of the print sheets. The gradient of the upward direction is set in two steps in order, and the gradient in the width direction of the printing paper is increased from the upstream side to the downstream side along the traveling direction of the printing paper in the central part of the printing paper stacking surface. A paper discharge tray for an image forming apparatus, which is provided with a mountain-shaped projecting portion that changes in a horizontal direction.
幅方向にスライド可能な案内部材を設けたことを特徴と
する請求項１記載の画像形成装置の排紙トレイ。2. A paper discharge tray of an image forming apparatus according to claim 1, wherein a guide member slidable in a print paper width direction is provided on a print paper stacking surface of said paper discharge tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10525495A JP3379277B2 (en) | 1995-04-28 | 1995-04-28 | Output tray of image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10525495A JP3379277B2 (en) | 1995-04-28 | 1995-04-28 | Output tray of image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08301501A JPH08301501A (en) | 1996-11-19 |
| JP3379277B2 true JP3379277B2 (en) | 2003-02-24 |
Family
ID=14402524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10525495A Expired - Fee Related JP3379277B2 (en) | 1995-04-28 | 1995-04-28 | Output tray of image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3379277B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19752027A1 (en) * | 1997-11-24 | 1998-10-22 | Computer Ges Konstanz | Stacking device for single sheets |
| JP2001240289A (en) * | 2000-02-28 | 2001-09-04 | Toyo Commun Equip Co Ltd | Loading device for bound paper sheets |
| JP4541938B2 (en) * | 2005-03-14 | 2010-09-08 | キヤノン株式会社 | Sheet processing apparatus and image forming apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60171963A (en) * | 1984-02-14 | 1985-09-05 | Fuji Xerox Co Ltd | Paper storing device |
| JPH0721467Y2 (en) * | 1989-04-07 | 1995-05-17 | 株式会社リコー | Output tray |
| JPH037153U (en) * | 1989-06-12 | 1991-01-23 | ||
| JP2549609Y2 (en) * | 1992-02-28 | 1997-09-30 | 凸版印刷株式会社 | Sheet supply stand |
| JPH0683658U (en) * | 1993-05-17 | 1994-11-29 | 村田機械株式会社 | Recording paper transport mechanism |
-
1995
- 1995-04-28 JP JP10525495A patent/JP3379277B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08301501A (en) | 1996-11-19 |
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