JPH07277583A - Paper discharging device of image forming device - Google Patents

Paper discharging device of image forming device

Info

Publication number
JPH07277583A
JPH07277583A JP6853494A JP6853494A JPH07277583A JP H07277583 A JPH07277583 A JP H07277583A JP 6853494 A JP6853494 A JP 6853494A JP 6853494 A JP6853494 A JP 6853494A JP H07277583 A JPH07277583 A JP H07277583A
Authority
JP
Japan
Prior art keywords
paper
tray
sheets
air
blower
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
JP6853494A
Other languages
Japanese (ja)
Inventor
Naoyuki Kimura
尚之 木村
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP6853494A priority Critical patent/JPH07277583A/en
Publication of JPH07277583A publication Critical patent/JPH07277583A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To provide a paper discharging device of a image forming device which prevents thin paper sheets or the like from jumping and dropping out of a tray and prevents stacked small-sized paper sheets from floating up and subsequently discharged sheets from getting in between the floating sheets to disorder the sequence. CONSTITUTION:A discharged paper tray 3 and a blower having a blasting path 7 for blowing air approximately in parallel in the paper discharging direction from the discharging port side provided to be located below a paper discharging port 6 for discharging sheets onto the discharged paper tray 3 are provided, and a plurality of blowing branch paths 8, 8' are provided in a blowing path 7 to direct upward at least one upward directed nozzle 9 of a plurality of blowing branch paths 8, 8'' in the paper discharging direction for flowing.

Description

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

【0001】[0001]

【産業上の利用分野】この発明は、画像形成装置の排紙
装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet discharging device for an image forming apparatus.

【0002】[0002]

【従来の技術】従来、この種の画像形成装置の排紙装置
1には、図5に示すように用紙を排紙トレイ3に排出す
る排出ローラ4側から排出される用紙2の排出方向とほ
ぼ平行な微風流を発生させる送風装置5を具え、排紙ト
レイ3内における用紙2の収納状態に応じて送風装置5
の作動・停止を制御する手段22を設け、排出ローラ4か
ら排紙トレイ3に排出された用紙2を送風によって順次
揃えて積み重ねるものが実開昭63-84060号公報に開示さ
れ公知となっている。なお6は排出口、23はファンモー
タの駆動電源、24はファンをそれぞれ示す。
2. Description of the Related Art Conventionally, as shown in FIG. 5, a paper discharge device 1 of this type of image forming apparatus has a discharge direction of a paper 2 discharged from a discharge roller 4 side for discharging a paper to a discharge tray 3. An air blower 5 is provided for generating a substantially parallel breeze flow.
It is disclosed in Japanese Utility Model Laid-Open No. 63-84060 that the means 22 for controlling the operation and stop of the sheet is provided and the sheets 2 discharged from the discharge roller 4 to the sheet discharge tray 3 are sequentially aligned and stacked by blowing air. There is. Reference numeral 6 denotes a discharge port, 23 denotes a fan motor drive power source, and 24 denotes a fan.

【0003】[0003]

【発明が解決しようとする課題】前記のような従来の排
紙装置は、原稿が排出される方向と平行(以下排紙方向
という)に送風しているため、用紙の種類によって軽い
ものなどはトレイより飛び出して落下し、又小さいサイ
ズの用紙だと、排出された用紙が浮いてしまい、その浮
いている用紙の間に後から排紙された用紙が潜り込み順
番が狂うという問題がある。
The conventional paper discharge device as described above blows air in a direction parallel to the direction in which the original is discharged (hereinafter referred to as the paper discharge direction). If the paper jumps out of the tray and falls, or if it is a small size paper, the discharged paper floats, and the paper discharged later comes in between the floating papers, which causes a problem that the order is out of order.

【0004】そこでこの発明の目的は前記のような従来
の画像形成装置の排紙装置がもつ問題を解消し、薄い用
紙などの用紙がトレイより飛び出して落下することがな
く、積載された小さいサイズの用紙が浮いてその浮いて
いる用紙の間に後から排紙された用紙が潜り込み順番が
狂うことのない排紙装置を提供するにある。
Therefore, an object of the present invention is to solve the above-mentioned problem of the sheet discharge device of the conventional image forming apparatus, and prevent sheets such as thin sheets from jumping out of the tray and dropping, and are stacked in a small size. Another object of the present invention is to provide a paper discharge device in which the paper is floated, and the paper discharged later does not slip in between the floating papers and the order is not disturbed.

【0005】[0005]

【課題を解決するための手段】この発明は、前記のよう
な目的を達成するために、請求項1の発明は、排出され
た用紙を積載する排紙トレイと、排紙トレイに用紙を排
出する排紙口の下方に位置して設けられ排出口側から排
紙方向にほぼ平行に送風する送風路を有する送風装置と
を具えた画像形成装置において、前記送風路に複数の送
風分岐路を設け、複数の送風分岐路の少なくとも1つを
排紙方向に上向きにして送風することを特徴とするもの
である。請求項2の発明は、排出された用紙を積載する
排紙トレイと、排紙トレイに用紙を排出する排紙口の下
方に位置して設けられ排出口側から排紙方向にほぼ平行
に送風する送風路を有する送風装置とを具えた画像形成
装置において、前記送風路に複数の送風分岐路を設け、
複数の送風分岐路の少なくとも1つを排紙方向に上向き
にして送風するとともに、前記排紙トレイの上方に位置
して排紙方向に下向きに傾斜させたガイド板を設けたこ
とを特徴とするものである。
SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a discharge tray on which discharged sheets are stacked and a sheet discharge tray. In the image forming apparatus having a blower device provided below the discharge port for blowing air substantially parallel to the discharge direction from the discharge port side, a plurality of blower branch paths are provided in the blower path. The present invention is characterized in that at least one of the plurality of air-blowing branch paths is provided so as to face upward in the paper ejection direction and air is blown. According to a second aspect of the present invention, a sheet ejection tray for stacking the ejected sheets and a sheet ejection port for ejecting the sheets to the sheet ejection tray are provided below the sheet ejection port, and the air is blown substantially in parallel to the sheet ejection direction. In an image forming apparatus having a blower device having a blower path, a plurality of blower branch paths are provided in the blower path,
At least one of the plurality of air branch paths is blown upward in the paper discharge direction, and a guide plate is provided above the paper discharge tray and inclined downward in the paper discharge direction. It is a thing.

【0006】[0006]

【作用】前記のようなこの発明において、請求項1の発
明は、複数の送風分岐路の少なくとも1つが排紙方向に
上向きの送風を発生し、後から排出される用紙を常に排
出されたものの最上部に持っていく。請求項2の発明
は、複数の送風分岐路の少なくともその1つを排紙方向
に上向きにして上向きの送風を発生して後から排出され
る用紙を常に最上部に持っていくとともに、排紙トレイ
の上方に位置して排紙方向に下向きに傾斜させて設けた
ガイド板が用紙の進行方向を下方に変えて用紙が排紙ト
レイから飛び出すのを防止し、送風を下方に向けて積載
された用紙の浮きを防止する。
In the present invention as described above, in the invention of claim 1, at least one of the plurality of air-blowing branch paths generates upward air in the paper discharge direction, and the paper discharged later is always discharged. Bring it to the top. According to the second aspect of the present invention, at least one of the plurality of air-blowing branch paths is directed upward in the paper discharge direction to generate upward airflow, and the paper discharged later is always brought to the uppermost portion, and the paper discharge is performed. A guide plate located above the tray and tilted downward in the paper ejection direction changes the paper traveling direction to the downward direction to prevent the paper from jumping out of the paper ejection tray, and the air is directed downward. To prevent loosened paper.

【0007】[0007]

【実施例】この発明の実施例において、前記従来と同様
の部分については同一の符号を引用して説明を省略し、
主として異なる部分について説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiments of the present invention, the same parts as those in the prior art are designated by the same reference numerals and their description is omitted.
Mainly different parts will be described.

【0008】この発明を図1に示す画像形成装置20の自
動原稿送り装置21に実施して説明する。図2,3に示す
この発明の第1実施例において、自動原稿送り装置21
は、排紙トレイ3と、排紙トレイ3の上方に位置して原
稿2′を積載する給紙トレイ11と、図示しない原稿反転
搬送部並びに、原稿を排出搬送する排出ローラ4と原稿
が排出される排出口6、及び排出口6の下方に位置して
送風路7を有する送風装置5を具えた排紙装置1が設け
られているものである。そして送風路7は排紙方向であ
ってほぼ水平に向けられた多数のノズル8,8′…の送
風分岐路と、排紙方向であって水平に対して上方に向け
て設けられた1個のノズル9又は数個のノズル9,9′
の送風分岐路とで構成されているものである。
The present invention will be described with reference to the automatic document feeder 21 of the image forming apparatus 20 shown in FIG. In the first embodiment of the present invention shown in FIGS. 2 and 3, the automatic document feeder 21
Is a paper discharge tray 3, a paper feed tray 11 located above the paper discharge tray 3 for stacking a document 2 ', a document reversing and conveying section (not shown), a discharge roller 4 for discharging and conveying the document, and a document discharge. The paper discharge device 1 including the discharge port 6 and the blower device 5 having the blower path 7 located below the discharge port 6 is provided. The blower path 7 is a blower branch path of a large number of nozzles 8, 8 '... which are directed substantially horizontally in the paper discharge direction and one provided in the paper discharge direction and upward with respect to the horizontal. Nozzle 9 or several nozzles 9, 9 '
It is configured with a blower branch passage.

【0009】このようなものにあって、給紙トレイ11か
ら取り込まれた原稿2′が反転搬送部を通過して排出ロ
ーラ4によって排出口6から排出される際、送風路7か
ら多数のノズル8,8′…によって排紙方向であって水
平方向に送出される送風と、1個のノズル9又は数個の
ノズル9,9′によって排紙方向であって水平方向に対
して上方に向けられて送出される送風とが生じ、それら
の送風によって後から排出される原稿2′をすでに排紙
トレイに積載されている原稿2″の最上部に搬送しつ
つ、前記のような送風によって排紙トレイ3の排紙方向
の下流側に寄せて集積する。なお前記の多数のノズル
8,8′…の代わりに、図示しないが、排紙方向に直交
する横長の1つの開口のものであってもよい。
In such a structure, when the original 2'taken from the paper feed tray 11 passes through the reverse conveying section and is discharged from the discharge port 6 by the discharge roller 4, a large number of nozzles are blown from the blower path 7. The air blown out in the paper discharge direction and in the horizontal direction by 8, 8 '... and the paper discharge direction directed upward in the horizontal direction by one nozzle 9 or several nozzles 9, 9' The air blown by the blown air is generated, and the originals 2'which are ejected later by the air blows are conveyed to the uppermost part of the originals 2 "already stacked on the paper ejection tray, while being ejected by the air blow as described above. The sheets are stacked close to each other on the downstream side in the paper discharge direction of the paper tray 3. It should be noted that, although not shown, instead of the above-mentioned multiple nozzles 8, one having a horizontally long opening orthogonal to the paper discharge direction. May be.

【0010】第2実施例は、図4に示すようであって、
給紙トレイ11の下面11′にあって排紙方向の下流側に排
紙方向に対して下方に傾斜したガイド板10を設けたもの
である以外第1実施例と異なるところがない。このよう
なものにあって、排出された原稿2′の進行方向はガイ
ド板10と、ガイド板10に沿って流れる送風とによって下
方に向けられていて、原稿2′が排紙トレイ3から飛び
出すことを防止し、又、ガイド板10は送風の向きを下方
に変えるので積載された原稿2″の浮きを抑えるもので
ある。
The second embodiment is as shown in FIG.
There is no difference from the first embodiment except that a guide plate 10 is provided on the lower surface 11 'of the paper feed tray 11 on the downstream side in the paper discharge direction and inclined downward with respect to the paper discharge direction. In such a structure, the discharged document 2'is directed downward by the guide plate 10 and the air flow flowing along the guide plate 10, and the document 2'is ejected from the paper discharge tray 3. In addition, since the guide plate 10 changes the direction of the blown air downward, it prevents the stacked originals 2 ″ from floating.

【0011】[0011]

【発明の効果】この発明は、前記のようであって、請求
項1の発明は、排出された用紙を積載する排紙トレイ
と、排紙トレイに用紙を排出する排紙口の下方に位置し
て設けられ排出口側から排紙方向にほぼ平行に送風する
送風路を有する送風装置とを具えた画像形成装置におい
て、前記送風路に複数の送風分岐路を設け、複数の送風
分岐路の少なくとも1つを排紙方向に上向きにして送風
するので、後から排出される用紙を常に最上部に持って
いくことができるという効果がある。請求項2の発明
は、排出された用紙を積載する排紙トレイと、排紙トレ
イに用紙を排出する排紙口の下方に位置して設けられ排
出口側から排紙方向にほぼ平行に送風する送風路を有す
る送風装置とを具えた画像形成装置において、前記送風
路に複数の送風分岐路を設け、複数の送風分岐路の少な
くとも1つを排紙方向に上向きにして送風するととも
に、前記排紙トレイの上方に位置して排紙方向に下向き
に傾斜させたガイド板を設けたので、用紙が排紙トレイ
から飛び出すのを防止することができ、又、積載された
用紙の浮きによって発生する後から排出された用紙の潜
り込みを防止でき、用紙の順番が狂うことがないという
効果がある。
The present invention is as described above, and the invention of claim 1 is located below the paper discharge tray for stacking the discharged paper and the paper discharge port for discharging the paper to the paper discharge tray. In the image forming apparatus having a blower device provided with a blower duct that blows air substantially parallel to the paper discharge direction from the outlet side, a plurality of blower branch passages are provided in the blower duct, and a plurality of blower branch passages are provided. Since at least one of the sheets is blown up in the sheet discharge direction, the sheet discharged later can always be brought to the top. According to a second aspect of the present invention, a sheet ejection tray for stacking the ejected sheets and a sheet ejection port for ejecting the sheets to the sheet ejection tray are provided below the sheet ejection port, and the air is blown substantially in parallel to the sheet ejection direction. In an image forming apparatus having a blower having a blower path, a plurality of blower branch paths are provided in the blower path, and at least one of the plurality of blower branch paths is blown upward in a paper discharge direction. Since the guide plate that is located above the paper ejection tray and is inclined downward in the paper ejection direction is provided, it is possible to prevent the paper from jumping out of the paper ejection tray, and also caused by the floating of the stacked paper. It is possible to prevent the sheets that have been discharged afterward from slipping in and to prevent the sheets from being out of order.

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

【図1】この発明を実施する自動原稿送り装置を具えた
画像形成装置の概略斜視図である。
FIG. 1 is a schematic perspective view of an image forming apparatus equipped with an automatic document feeder embodying the present invention.

【図2】この発明の第1実施例の概略縦断面図である。FIG. 2 is a schematic vertical sectional view of the first embodiment of the present invention.

【図3】同上の第1実施例の送風装置の概略斜視図であ
る。
FIG. 3 is a schematic perspective view of the air blower according to the first embodiment.

【図4】同上の第2実施例の概略縦断面図である。FIG. 4 is a schematic vertical sectional view of a second embodiment of the above.

【図5】従来の画像形成装置の排紙装置の概略縦断面図
である。
FIG. 5 is a schematic vertical sectional view of a paper discharge device of a conventional image forming apparatus.

【符号の説明】[Explanation of symbols]

1 排紙装置 2 用紙 3 排紙トレイ 5 送風装置 6 排出口 7 送風路 8,8′ ノズル 9,9′ 上向きノズル 10 ガイド板 11 給紙トレイ 1 Paper Ejecting Device 2 Paper 3 Paper Ejecting Tray 5 Air Blower 6 Ejecting Port 7 Air Blower 8, 8'Nozzle 9, 9'Upward Nozzle 10 Guide Plate 11 Paper Tray

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 排出された用紙を積載する排紙トレイ
と、排紙トレイに用紙を排出する排紙口の下方に位置し
て設けられ排出口側から排紙方向にほぼ平行に送風する
送風路を有する送風装置とを具えた画像形成装置におい
て、前記送風路に複数の送風分岐路を設け、複数の送風
分岐路の少なくとも1つを排紙方向に上向きにして送風
することを特徴とする排紙装置。
1. An air discharge tray on which discharged sheets are stacked, and a blower which is provided below the sheet discharge port for discharging sheets to the sheet discharge tray and blows air substantially parallel to the sheet discharge direction from the discharge port side. An image forming apparatus including an air blower having a passage, wherein a plurality of air blow branch passages are provided in the air blow passage, and at least one of the plurality of air blow branch passages is blown upward in a paper discharge direction. Paper ejection device.
【請求項2】 排出された用紙を積載する排紙トレイ
と、排紙トレイに用紙を排出する排紙口の下方に位置し
て設けられ排出口側から排紙方向にほぼ平行に送風する
送風路を有する送風装置とを具えた画像形成装置におい
て、前記送風路に複数の送風分岐路を設け、複数の送風
分岐路の少なくとも1つを排紙方向に上向きにして送風
するとともに、前記排紙トレイの上方に位置して排紙方
向に下向きに傾斜させたガイド板を設けたことを特徴と
する排紙装置。
2. An air discharge tray on which discharged sheets are stacked, and a blower which is provided below the sheet discharge port for discharging sheets to the sheet discharge tray and blows air substantially parallel to the sheet discharge direction from the discharge port side. An image forming apparatus including a blower having a passage, wherein a plurality of blow branch passages are provided in the blow passage, and at least one of the blow branch passages is blown upward in a discharge direction, and the discharge sheet is discharged. A paper discharge device, comprising a guide plate located above the tray and inclined downward in the paper discharge direction.
JP6853494A 1994-04-06 1994-04-06 Paper discharging device of image forming device Pending JPH07277583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6853494A JPH07277583A (en) 1994-04-06 1994-04-06 Paper discharging device of image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6853494A JPH07277583A (en) 1994-04-06 1994-04-06 Paper discharging device of image forming device

Publications (1)

Publication Number Publication Date
JPH07277583A true JPH07277583A (en) 1995-10-24

Family

ID=13376506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6853494A Pending JPH07277583A (en) 1994-04-06 1994-04-06 Paper discharging device of image forming device

Country Status (1)

Country Link
JP (1) JPH07277583A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103787123A (en) * 2012-11-02 2014-05-14 致伸科技股份有限公司 Paper processing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103787123A (en) * 2012-11-02 2014-05-14 致伸科技股份有限公司 Paper processing device

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