JP2010215309A - Discharge sheet loading device and image reading device - Google Patents
Discharge sheet loading device and image reading device Download PDFInfo
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Abstract
Description
本発明は、例えば、スキャナ、ファクシミリ、複写機等の画像読取装置やプリンタ等の画像形成装置に用いられる排出シート積載装置、及び該排出シート積載装置を備える画像読取装置に関する。 The present invention relates to a discharge sheet stacking device used in an image reading apparatus such as a scanner, a facsimile machine, and a copying machine, and an image forming apparatus such as a printer, and an image reading apparatus including the discharge sheet stacking apparatus.
従来のこの種の排出シート積載装置を備える画像読取装置としては、例えば、図７に示すものがある。 As a conventional image reading apparatus provided with this type of discharged sheet stacking apparatus, for example, there is the one shown in FIG.
この画像読取装置は、給紙トレイ２に積載された複数枚のシート１が給紙口５からフィードローラ３及びリタードローラ４によって一枚ずつ分離されて搬送路に給送され、搬送路に給送されたシート１は、搬送ローラ対６によって下流側に搬送される。 In this image reading apparatus, a plurality of sheets 1 stacked on a sheet feed tray 2 are separated one by one from a sheet feed port 5 by a feed roller 3 and a retard roller 4 and fed to a conveyance path, and then fed to the conveyance path. The fed sheet 1 is conveyed downstream by the conveying roller pair 6.
下流側に搬送されたシート１は、読取センサ７，８によって表裏の画像が読み取られ、その後、排紙ローラ対９によって積載トレイ１０に排出される。積載トレイ１０には、長尺のシート１が積載される際のシート１の整列性を向上させる目的で、回動式又はスライド式の延長トレイ１２が取り付けられている（特許文献１）。 The front and back images of the sheet 1 conveyed downstream are read by the reading sensors 7 and 8, and then discharged to the stacking tray 10 by the discharge roller pair 9. A rotating or sliding extension tray 12 is attached to the stacking tray 10 for the purpose of improving the alignment of the sheets 1 when the long sheets 1 are stacked (Patent Document 1).
しかし、上記従来の技術では、延長トレイ１２を回動又はスライド操作により積載トレイ１０から延長させた状態で、大量のシート１が積載されると、積載トレイ１０の延長トレイ１２を支持する部位に大きな負荷が加わる。このため、延長トレイ１２が下方向に大きく変位して撓んだ状態となるので、シート１の整列性が低下する。 However, in the above conventional technique, when a large number of sheets 1 are stacked in a state where the extension tray 12 is extended from the stacking tray 10 by rotating or sliding operation, the extension tray 12 of the stacking tray 10 supports the extension tray 12. A large load is applied. For this reason, since the extension tray 12 is greatly displaced downward and bent, the alignment of the sheets 1 is deteriorated.
そこで、本発明は、積載トレイから延長された延長トレイに排出シートが積載された際の該延長トレイの変位を抑制してシートの整列性を向上させることができる排出シート積載装置及び画像読取装置を提供することを目的とする。 Accordingly, the present invention provides a discharge sheet stacking apparatus and an image reading apparatus capable of suppressing the displacement of the extension tray when the discharge sheet is stacked on the extension tray extended from the stacking tray and improving the sheet alignment. The purpose is to provide.
上記目的を達成するために、本発明の排出シート積載装置は、排出されるシートを積載する積載トレイと、該積載トレイから延長可能に前記積載トレイに収納される延長トレイと、該延長トレイに取り付けられ、前記延長トレイが前記積載トレイに収納された状態で該延長トレイからシート積載方向の上方向に起立して、排出されるシートの下流端を受け止め、前記延長トレイが前記積載トレイから延長された状態で該延長トレイからシート積載方向の下方向に起立して、設置面に当接する起立部材と、を備えることを特徴とする。 In order to achieve the above object, a discharge sheet stacking apparatus according to the present invention includes a stacking tray for stacking discharged sheets, an extension tray that can be extended from the stacking tray, and stored in the stacking tray, and the extension tray. The extension tray is attached to the stacking tray and rises upward in the sheet stacking direction from the extension tray to receive the downstream end of the discharged sheet, and the extension tray extends from the stacking tray. And an erecting member that erects downward in the sheet stacking direction from the extension tray and contacts the installation surface.
本発明の排出シート積載装置は、排出されるシートを積載する積載トレイと、該積載トレイから延長可能に前記積載トレイに収納される延長トレイと、該延長トレイに取り付けられ、前記延長トレイが前記積載トレイから延長された状態で該延長トレイからシート積載方向の下方向に起立して、設置面に当接する起立部材を備える ことを特徴とする。 The discharged sheet stacking apparatus of the present invention includes a stacking tray for stacking discharged sheets, an extension tray that is accommodated in the stacking tray so as to be extendable from the stacking tray, and the extension tray is attached to the extension tray. In the state extended from the stacking tray, an erecting member is provided that rises downward from the extension tray in the sheet stacking direction and contacts the installation surface.
本発明の画像読取装置は、読取センサにより画像が読み取られた後に排出されるシートを積載する排出シート積載装置を備える画像読取装置であって、前記排出シート積載装置として、請求項１〜６のいずれか一項に記載の排出シート積載装置が用いられる、ことを特徴とする。 An image reading apparatus according to the present invention is an image reading apparatus including a discharge sheet stacking device for stacking sheets discharged after an image is read by a reading sensor, and the discharge sheet stacking device is as claimed in claim 1. The discharge sheet stacking apparatus described in any one of the above items is used.
本発明によれば、積載トレイから延長された延長トレイに排出シートが積載された際の該延長トレイの変位を抑制することができるので、シートの整列性を向上させることができる。 According to the present invention, since the displacement of the extension tray when the discharge sheet is stacked on the extension tray extended from the stacking tray can be suppressed, the alignment of the sheets can be improved.
以下、本発明の実施形態の一例を図面を参照して説明する。 Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
図１は、本発明の実施形態の一例である排出シート積載装置を備える画像読取装置を説明するための概略断面図である。 FIG. 1 is a schematic cross-sectional view for explaining an image reading apparatus including a discharge sheet stacking apparatus which is an example of an embodiment of the present invention.
図１に示す画像読取装置は、給紙トレイ２に積載された複数枚のシート１が給紙口５からフィードローラ３及びリタードローラ４によって１枚ずつ分離されて搬送路に給送される。 In the image reading apparatus shown in FIG. 1, a plurality of sheets 1 stacked on a paper feed tray 2 are separated from a paper feed port 5 one by one by a feed roller 3 and a retard roller 4 and fed to a conveyance path.
このとき、フィードローラ３がシート１を搬送路に引き込む方向に回転し、同時に、リタードローラ４にも回転力が伝達されるが、リタードローラ４は、シート１を搬送路に引き込む方向とは逆方向に回転しようとする。 At this time, the feed roller 3 rotates in the direction in which the sheet 1 is drawn into the conveyance path, and at the same time, the rotational force is transmitted to the retard roller 4, but the retard roller 4 is opposite to the direction in which the sheet 1 is drawn into the conveyance path. Try to rotate in the direction.
但し、リタードローラ４の内部には、トルクリミッタが設けられており、フィードローラ３とリタードローラ４のニップ部に複数枚のシート１が挿入した場合は、フィードローラ３と接していない２枚目以降のシート１がリタードローラ４により押し戻される。 However, a torque limiter is provided inside the retard roller 4. When a plurality of sheets 1 are inserted into the nip portion between the feed roller 3 and the retard roller 4, the second sheet that is not in contact with the feed roller 3. Subsequent sheets 1 are pushed back by the retard roller 4.
そして、前述したニップ部にシート１が１枚のみとなると、そのシート１の給送に合わせてリタードローラ４はフィードローラ３と連れ回りを開始し、これにより、シート１が１枚ずつ分離されて搬送路に給送される。 When there is only one sheet 1 in the nip portion described above, the retard roller 4 starts to rotate with the feed roller 3 as the sheet 1 is fed, whereby the sheets 1 are separated one by one. And fed to the transport path.
搬送路に給送されたシート１は、搬送ローラ対６によって下流側に搬送され、下流側に搬送されたシート１は、読取センサ７，８によって表裏の画像が読み取られた後、排紙ローラ対９によって排紙口１１から積載トレイ１０に排出される。 The sheet 1 fed to the conveyance path is conveyed to the downstream side by the conveyance roller pair 6, and the sheet 1 conveyed to the downstream side is read by the reading sensors 7 and 8, and then the sheet discharge roller The sheet 9 is discharged from the discharge port 11 to the stacking tray 10 by the pair 9.
積載トレイ１０の先端部には、該積載トレイ１０から延長可能な延長トレイ１２が回動可能に支持されている。延長トレイ１２は、回動操作により、積載トレイ１０に収納される位置（図１）と積載トレイ１０から延長される位置（図２）とに配置される。 An extension tray 12 that can be extended from the stacking tray 10 is rotatably supported at the front end of the stacking tray 10. The extension tray 12 is arranged at a position (FIG. 1) stored in the stacking tray 10 and a position extended from the stacking tray 10 (FIG. 2) by rotating operation.
延長トレイ１２には、シート排出方向に互いに離間して複数配置（図では２つ）された起立部材１３ａ，１３ｂがそれぞれ回動可能に支持されている。起立部材１３ａ，１３ｂは、延長トレイ１２が積載トレイ１０に収納された状態（図１）で、その回動支点が排紙口１１側に配置される。 On the extension tray 12, a plurality of upright members 13a and 13b (two in the drawing) spaced apart from each other in the sheet discharge direction are supported rotatably. The upright members 13a and 13b are arranged on the discharge port 11 side with their pivotal fulcrum in a state where the extension tray 12 is stored in the stacking tray 10 (FIG. 1).
そして、起立部材１３ａ，１３ｂは、延長トレイ１２の収納孔１２ａ（図５）に収納された状態からシート積載方向の上方向に起立する位置と下方向に起立する位置とに回動可能とされている。 Then, the standing members 13a and 13b are rotatable from a state where they are stored in the storage hole 12a (FIG. 5) of the extension tray 12 to a position where they stand up in the sheet stacking direction and a position where they stand up. ing.
また、延長トレイ１２が積載トレイ１０から延長される位置（図２）に配置されている場合、起立部材１３ａ，１３ｂは、図５に示すように、起立した状態からのシート排出方向の下流側への回動が収納孔１２ａの内壁部１４に当接することにより規制される。 Further, when the extension tray 12 is disposed at a position extended from the stacking tray 10 (FIG. 2), the upright members 13a and 13b are downstream in the sheet discharge direction from the upright state as shown in FIG. Is restricted by contacting the inner wall 14 of the storage hole 12a.
ここで、積載トレイ１０に排出されるシート１の長さが比較的短い場合は、図１に示すように、延長トレイ１２を積載トレイ１０に収納した状態で、シート１の長さ等に応じて例えば起立部材１３ｂをシート積載方向における上方向に起立させる。 Here, when the length of the sheet 1 discharged to the stacking tray 10 is relatively short, as shown in FIG. 1, the extension tray 12 is stored in the stacking tray 10 and the length of the sheet 1 is determined. For example, the standing member 13b is raised upward in the sheet stacking direction.
これにより、排出されるシート１の下流端が起立部材１３ｂにより受け止められ、シート１が積載された際の整列性が確保される。 Thereby, the downstream end of the discharged sheet 1 is received by the upright member 13b, and the alignment when the sheets 1 are stacked is ensured.
なお、延長トレイ１２を積載トレイ１０に収納した状態では、シート１が上方向に起立する起立部材１３ｂ（又は１３ａ）を押し倒す方向に突き当たる。このため、起立した状態の起立部材１３ｂ（又は１３ａ）がシート排出方向の下流側へ回動するのを規制するため、例えば、図６に示すようなロック機構を設けるのが好ましい。なお、図示では起立部材１３ａにロック機構を設けているが、起立部材１３ｂにもロック機構を設けることが好ましい。 In the state in which the extension tray 12 is stored in the stacking tray 10, the sheet 1 hits in a direction to push down the standing member 13 b (or 13 a) that rises upward. For this reason, in order to restrict the standing member 13b (or 13a) in the standing state from rotating to the downstream side in the sheet discharging direction, for example, it is preferable to provide a lock mechanism as shown in FIG. In the drawing, the upright member 13a is provided with a lock mechanism, but it is preferable that the upright member 13b is also provided with a lock mechanism.
このロック機構を構成するために、起立部材１３ａ，１３ｂの基端部に２つの突起１５ａを互いに略１８０°離間させて形成する。そして、起立部材１３ａ，１３ｂがシート積載方向の上方向又は下方向に起立した際に、突起１５ａを収納孔１２ａの内壁部１４に形成した溝部１６ｂに係合させる。これにより、延長トレイ１２が収納状態にあるときの起立部材１３ａ，１３ｂのシート排出方向の下流側への回動をロックする。 In order to configure this locking mechanism, two protrusions 15a are formed at the proximal end portions of the upright members 13a and 13b so as to be separated from each other by approximately 180 °. When the upright members 13a and 13b stand up or down in the sheet stacking direction, the protrusion 15a is engaged with the groove 16b formed in the inner wall portion 14 of the storage hole 12a. Thereby, the rotation of the upright members 13a and 13b to the downstream side in the sheet discharging direction when the extension tray 12 is in the stored state is locked.
一方、積載トレイ１０に排出されるシート１の長さが比較的長い場合は、図２に示すように、延長トレイ１２を回動操作して積載トレイ１０から延長させる。そして、この状態で、シート１の長さ等に応じて例えば起立部材１３ａをシート積載方向の上方向に起立させ、また、起立部材１３ｂをシート積載方向の下方向に起立させて本装置を設置した机等の上面（設置面）に当接させる。 On the other hand, when the length of the sheet 1 discharged to the stacking tray 10 is relatively long, the extension tray 12 is rotated and extended from the stacking tray 10 as shown in FIG. In this state, for example, the standing member 13a is raised upward in the sheet stacking direction according to the length of the sheet 1 and the standing member 13b is raised downward in the sheet stacking direction to install the apparatus. It is brought into contact with the upper surface (installation surface) of a desk or the like.
これにより、排出されるシート１の下流端が起立部材１３ａにより受け止められ、また、延長トレイ１２に大量のシート１が積載された際にその荷重が起立部材１３ｂにより支持され、延長トレイ１２の変位が抑制される。 As a result, the downstream end of the discharged sheet 1 is received by the upright member 13a, and when a large amount of sheets 1 are stacked on the extension tray 12, the load is supported by the upright member 13b. Is suppressed.
なお、起立部材１３ａ，１３ｂのうち、設置面に当接させる起立部材をどれにするかで延長トレイ１２と画像読取装置の搬送路とのなす角度θが変化するため、排出するシート１の種類により設置面に当接させる起立部材を選択するのが望ましい。 The angle θ formed between the extension tray 12 and the conveyance path of the image reading apparatus changes depending on which of the standing members 13a and 13b is brought into contact with the installation surface. It is desirable to select an upright member to be brought into contact with the installation surface.
例えば、比較的コシの弱いシート１を排出する際は、図２に示すように、排紙口１１に近い側の起立部材１３ｂを設置面に当接させる。これにより、延長トレイ１２と搬送路とのなす角度θが小さくなり、シート排出時の惰性が弱められて整列性が向上する。 For example, when discharging the relatively weak sheet 1, as shown in FIG. 2, the upright member 13 b near the sheet discharge outlet 11 is brought into contact with the installation surface. As a result, the angle θ formed between the extension tray 12 and the conveyance path is reduced, the inertia during sheet discharge is weakened, and the alignment is improved.
逆に、比較的コシの強いシート材を排出する際は、図３に示すように、排紙口１１から遠い側の起立部材１３ａを設置面に当接させる。これにより、延長トレイ１２と搬送路とのなす角度θが大きくなり、シート排出時の駆動系への負荷やローラ・シート間に生じる滑り等を減らすことができる。 On the contrary, when discharging a relatively strong sheet material, as shown in FIG. 3, the upright member 13 a far from the sheet discharge outlet 11 is brought into contact with the installation surface. As a result, the angle θ formed between the extension tray 12 and the conveyance path is increased, and it is possible to reduce the load on the drive system when the sheet is discharged, the slip generated between the rollers and the sheet, and the like.
また、排出するシート１の種類が限定される画像読取装置の場合は、図４に示すように、起立部材１３ａ，１３ｂの長さを各々変更して、どの起立部材を設置面に当接させても延長トレイ１２と搬送路との角度θが一定になるようにする。これにより、シートの長さに応じて起立部材１３ａ，１３ｂの使い分けが可能となり、排紙性能が安定する。 Further, in the case of an image reading apparatus in which the types of discharged sheets 1 are limited, as shown in FIG. 4, the lengths of the standing members 13a and 13b are changed so that which standing member comes into contact with the installation surface. Even so, the angle θ between the extension tray 12 and the transport path is made constant. As a result, the standing members 13a and 13b can be used properly according to the length of the sheet, and the paper discharge performance is stabilized.
以上説明したように、本実施形態では、積載トレイ１０から延長された延長トレイ１２に排出シート１が積載された際に、該延長トレイ１２の変位を抑制することができるので、シート１の整列性を向上させることができる。 As described above, in the present embodiment, when the discharge sheet 1 is stacked on the extension tray 12 extended from the stacking tray 10, the displacement of the extension tray 12 can be suppressed. Can be improved.
なお、本発明の構成は、上記実施形態に例示したものに限定されるものではなく、材質、形状、寸法、形態、数、配置箇所等は、本発明の要旨を逸脱しない範囲において適宜変更可能である。 The configuration of the present invention is not limited to that exemplified in the above embodiment, and the material, shape, dimensions, form, number, arrangement location, and the like can be changed as appropriate without departing from the scope of the present invention. It is.
例えば、上記実施形態では、起立部材１３ａ，１３ｂが排出されるシート１の下流端を受け止める機能と設置面に当接して延長トレイ１２を支持する機能とを兼用する場合を例示したが、これに限定されない。 For example, in the above-described embodiment, the case where the function of receiving the downstream end of the sheet 1 from which the standing members 13a and 13b are discharged and the function of supporting the extension tray 12 by contacting the installation surface is combined is illustrated. It is not limited.
例えば、積載トレイ１０から延長された状態の延長トレイ１２からシート積載方向の下方向に起立して設置面に当接する専用の起立部材を設けてもよい。 For example, a dedicated upright member that stands up from the extension tray 12 in a state of being extended from the stacking tray 10 in the sheet stacking direction and contacts the installation surface may be provided.
１ シート
２ 給紙トレイ
３ フィードローラ
４ リタードローラ
５ 給紙口
６ 搬送ローラ対
７ 読取センサ
８ 読取センサ
９ 排紙ローラ対
１０ 積載トレイ
１１ 排紙口
１２ 延長トレイ
１２ａ 収納孔
１３ａ，１３ｂ 起立部材
１４ 内壁部
１５ａ 突起
１５ｂ 溝
DESCRIPTION OF SYMBOLS 1 Sheet 2 Paper feed tray 3 Feed roller 4 Retard roller 5 Paper feed port 6 Conveying roller pair 7 Reading sensor 8 Reading sensor 9 Paper discharge roller pair 10 Stack tray 11 Paper discharge port 12 Extension tray 12a Storage holes 13a, 13b Standing member 14 Inner wall 15a protrusion 15b groove
Claims (7)
該積載トレイから延長可能に前記積載トレイに収納される延長トレイと、
該延長トレイに取り付けられ、前記延長トレイが前記積載トレイに収納された状態で該延長トレイからシート積載方向の上方向に起立して、排出されるシートの下流端を受け止め、前記延長トレイが前記積載トレイから延長された状態で該延長トレイからシート積載方向の下方向に起立して、設置面に当接する起立部材と、を備える
ことを特徴とする排出シート積載装置。 A stacking tray for stacking discharged sheets;
An extension tray stored in the stacking tray so as to be extendable from the stacking tray;
It is attached to the extension tray, and stands up in the sheet stacking direction from the extension tray with the extension tray stored in the stacking tray, receives the downstream end of the discharged sheet, and the extension tray An ejected sheet stacking apparatus comprising: an erecting member that erects downward from the extension tray in a sheet stacking direction while being extended from the stacking tray, and abuts against an installation surface.
ことを特徴とする請求項１に記載の排出シート積載装置。 A plurality of the upright members are arranged apart from each other in the sheet discharge direction.
The discharged sheet stacking apparatus according to claim 1.
ことを特徴とする請求項２に記載の排出シート積載装置。 In a state where the extension tray is extended from the stacking tray, any of the plurality of standing members stands up from the extension tray in the sheet stacking direction and receives the downstream end of the discharged sheet.
The discharged sheet stacking apparatus according to claim 2, wherein:
ことを特徴とする請求項１〜３のいずれか一項に記載の排出シート積載装置。 The upright member is supported by the extension tray so as to be rotatable between a position of standing up in the sheet stacking direction from the extension tray and a position of standing up in the downward direction.
The discharged sheet stacking apparatus according to any one of claims 1 to 3, wherein
ことを特徴とする請求項４に記載の排出シート積載装置。 The discharged sheet stacking apparatus according to claim 4, further comprising a restricting unit that restricts rotation of the upright member in a state of rising from the extension tray to the downstream side in the sheet discharge direction.
該積載トレイから延長可能に前記積載トレイに収納される延長トレイと、
該延長トレイに取り付けられ、前記延長トレイが前記積載トレイから延長された状態で該延長トレイからシート積載方向の下方向に起立して、設置面に当接する起立部材を備える ことを特徴とする排出シート積載装置。 A stacking tray for stacking discharged sheets;
An extension tray stored in the stacking tray so as to be extendable from the stacking tray;
A discharge member, characterized by comprising an erecting member attached to the extension tray, erecting downward in the sheet stacking direction from the extension tray in a state in which the extension tray is extended from the stacking tray, and contacting the installation surface Sheet stacking device.
前記排出シート積載装置として、請求項１〜６のいずれか一項に記載の排出シート積載装置が用いられる、
ことを特徴とする画像読取装置。 An image reading device including a discharge sheet stacking device for stacking sheets discharged after an image is read by a reading sensor,
The discharged sheet stacking device according to any one of claims 1 to 6 is used as the discharged sheet stacking device.
An image reading apparatus.
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| JP2009061392A JP5349092B2 (en) | 2009-03-13 | 2009-03-13 | Discharged sheet stacking apparatus and image reading apparatus |
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| JP2009061392A JP5349092B2 (en) | 2009-03-13 | 2009-03-13 | Discharged sheet stacking apparatus and image reading apparatus |
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| JP5349092B2 JP5349092B2 (en) | 2013-11-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017086478A1 (en) * | 2015-11-20 | 2017-05-26 | キヤノン電子株式会社 | Sheet transporting device |
| JP2018104157A (en) * | 2016-12-27 | 2018-07-05 | キヤノン電子株式会社 | Sheet carrying device |
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|---|---|---|---|---|
| JPH0753109A (en) * | 1993-08-19 | 1995-02-28 | Tec Corp | Printer |
| JP2003112847A (en) * | 2001-10-03 | 2003-04-18 | Ricoh Co Ltd | Paper discharge tray device and image forming device |
| JP2005231833A (en) * | 2004-02-20 | 2005-09-02 | Kyocera Mita Corp | Sheet stacking device |
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- 2009-03-13 JP JP2009061392A patent/JP5349092B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0753109A (en) * | 1993-08-19 | 1995-02-28 | Tec Corp | Printer |
| JP2003112847A (en) * | 2001-10-03 | 2003-04-18 | Ricoh Co Ltd | Paper discharge tray device and image forming device |
| JP2005231833A (en) * | 2004-02-20 | 2005-09-02 | Kyocera Mita Corp | Sheet stacking device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017086478A1 (en) * | 2015-11-20 | 2017-05-26 | キヤノン電子株式会社 | Sheet transporting device |
| US10301139B2 (en) | 2015-11-20 | 2019-05-28 | Canon Denshi Kabushiki Kaisha | Sheet conveyance apparatus |
| US10815091B2 (en) | 2015-11-20 | 2020-10-27 | Canon Denshi Kabushiki Kaisha | Sheet conveyance apparatus |
| JP2018104157A (en) * | 2016-12-27 | 2018-07-05 | キヤノン電子株式会社 | Sheet carrying device |
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