JPH11171388A - Paper discharging device - Google Patents
Paper discharging deviceInfo
- Publication number
- JPH11171388A JPH11171388A JP9363021A JP36302197A JPH11171388A JP H11171388 A JPH11171388 A JP H11171388A JP 9363021 A JP9363021 A JP 9363021A JP 36302197 A JP36302197 A JP 36302197A JP H11171388 A JPH11171388 A JP H11171388A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- brush
- guide plate
- discharge
- sheet
- 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.)
- Granted
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複写機、プリン
タ、ファクシミリ、それらの複合機、印刷機等の画像形
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 paper ejection device for an image forming apparatus such as a copying machine, a printer, a facsimile, a multifunction machine thereof, and a printing machine.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来の
この種の排紙装置としては、例えば特開昭６３−２０５
６８６号公報に記載のものがある。この例の除電ブラシ
においては、排紙トレイ上での用紙のスタック性を良好
に保つために、除電ブラシのブラシ長さに違いを設け、
このブラシ長の違いを利用して排出用紙にコシを付ける
（以下これをコシ付けという）ようにしているが、用紙
サイズが大きく、厚さが薄くなるほど用紙にコシを付け
るというよりも、用紙を排紙トレイ上へ押し付ける機能
が強く発揮されるようになり、用紙のコシ折れによる後
端残りや、後端折れ等のスタック不良が発生し得るよう
になるという問題がある。2. Description of the Related Art A conventional paper ejection device of this type is disclosed, for example, in Japanese Patent Application Laid-Open No. 63-205.
No. 686 discloses this. In the static elimination brush of this example, in order to maintain good stackability of sheets on the paper discharge tray, a difference is provided in the brush length of the static elimination brush,
This difference in brush length is used to make the paper stiff (hereinafter referred to as stiffening). However, the larger the paper size and the thinner the paper, the more the paper is stiffened. There is a problem that the function of pressing the sheet onto the sheet discharge tray is strongly exerted, and a stacking defect such as a trailing end remaining due to the stiffness of the sheet or the trailing end of the sheet may occur.
【０００３】また、ブラシの長さが部分的に異なる除電
ブラシを製作するには、ブラシをカットするために専用
のカッターが必要になったり、カットの工程が増えたり
することになり、除電ブラシの製造コストが高くなると
いう問題もある。さらに、ブラシ長の異なる複数個の除
電ブラシを画像形成装置に組み付ける場合には、組み付
け工程が増え、部品の管理費も増えるのでコスト高にな
るという問題がある。In order to manufacture a neutralizing brush having a partially different brush length, a dedicated cutter is required to cut the brush, and the number of cutting steps is increased. There is also a problem that the manufacturing cost of the device increases. Further, when assembling a plurality of static elimination brushes having different brush lengths to the image forming apparatus, there is a problem that the number of assembling steps increases and the management cost of parts also increases, resulting in high costs.
【０００４】そこで本発明は、簡単な構成で、小サイズ
から大サイズの用紙まで、また薄紙から厚紙まで、用紙
のコシ付け機能を発揮でき、排紙トレイ上での用紙のス
タック性を良好に保つことができ、かつコスト高を招く
ことのない排紙装置を提供することを目的とする。Accordingly, the present invention can exhibit a stiffening function of paper from a small size to a large size, and from a thin paper to a thick paper, with a simple configuration, and improve the stackability of the paper on the paper discharge tray. An object of the present invention is to provide a paper discharge device which can be maintained and does not increase costs.
【０００５】[0005]
【課題を解決するための手段】本発明の排紙装置のうち
請求項１に係るものは、上記目的を達成するために、排
紙出口に設けた除電ブラシにより除電しつつ排紙ローラ
及び排紙ガイド板により排紙トレイ上へ用紙を排出する
排紙装置において、上記排紙ローラと上記排紙ガイド板
の少なくともいずれか一方に、排紙する用紙にコシを付
けるための部位を設けるとともに、上記除電ブラシが、
上記用紙にコシを付ける部位に対応する部位にブラシの
ない部分を有することを特徴とする。According to a first aspect of the present invention, in order to achieve the above object, a discharge roller and a discharge roller which discharge electricity by a discharge brush provided at a discharge outlet are provided. In a paper discharge device for discharging paper onto a paper discharge tray by a paper guide plate, at least one of the paper discharge roller and the paper discharge guide plate is provided with a portion for stiffening paper to be discharged, The static elimination brush is
It is characterized in that a portion without a brush is provided in a portion corresponding to a portion where the paper is stiffened.
【０００６】同請求項２に係るものは、上記除電ブラシ
の有するブラシが可撓性を有し、上記除電ブラシのブラ
シ無しとする部分を、該部分が備えるブラシを粘着シー
トの巻き付けによって覆って形成してなることを特徴と
する。According to a second aspect of the present invention, the brush of the neutralizing brush has flexibility, and the brushless portion of the neutralizing brush is covered by winding the brush provided on the portion with an adhesive sheet. It is characterized by being formed.
【０００７】[0007]
【発明の実施の形態】以下本発明の実施の形態を図面を
参照して説明する。図１は、本発明に係る排紙装置の一
実施形態の断面図（Ａ）、同右側面図（Ｂ）及び除電ブ
ラシの斜視図（Ｃ）である。図中１は排紙ローラ、２は
排紙従動ローラ、３は上ガイド板、４は下ガイド板、５
は除電ブラシ、６は排紙トレイである。排紙される用紙
Ｐは、上ガイド板３及び下ガイド板４にガイドされなが
ら図中矢印Ａ方向に進み、排紙ローラ１と排紙従動ロー
ラ２とのニップに導かれた後、搬送され、排紙出口上部
に設けた除電ブラシ５が有するブラシ７の先端に接触し
たり離れたりしながら排紙トレイ６上に排出され、順次
スタックされていく。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view (A), a right side view (B), and a perspective view (C) of a static elimination brush of an embodiment of a paper discharge device according to the present invention. In the drawing, 1 is a paper discharge roller, 2 is a paper discharge driven roller, 3 is an upper guide plate, 4 is a lower guide plate, 5
Denotes a discharging brush, and 6 denotes a discharge tray. The paper P to be discharged advances in the direction of arrow A in the figure while being guided by the upper guide plate 3 and the lower guide plate 4, is guided to a nip between the discharge roller 1 and the discharge driven roller 2, and is conveyed. The paper is discharged onto the paper discharge tray 6 while being in contact with or separated from the tip of the brush 7 of the charge removal brush 5 provided above the paper discharge outlet, and is sequentially stacked.
【０００８】図２に示すように、排紙ローラ１には用紙
コシ付けのためのフランジ１ａが設けてあり、下ガイド
板４には用紙コシ付け用の突起４ａが設けてある。排紙
ローラ１と排紙従動ローラ２とにより排紙トレイ６へと
排出される用紙Ｐは、コシ付けのためのフランジ１ａと
突起４ａの働きにより、図２に示すように中央部が高
く、両端部が低くなってコシが与えられて排紙され、排
紙トレイ６上にスタックされる。As shown in FIG. 2, the discharge roller 1 is provided with a flange 1a for stiffening the paper, and the lower guide plate 4 is provided with a projection 4a for stiffening the paper. The paper P discharged to the paper discharge tray 6 by the paper discharge roller 1 and the paper discharge driven roller 2 has a high central portion as shown in FIG. Both ends are lowered and stiffness is given to discharge the paper, and the paper is stacked on the paper discharge tray 6.
【０００９】上ガイド板３に取り付けた除電ブラシ５
は、背骨部８の両端部にはブラシ７を有し、中央部９が
ブラシ無しの部分で構成されており、コシ付けされた用
紙Ｐの両端部でのみブラシ７の先端が接触可能になって
いる。従って、除電ブラシ５の中央部９では排紙ローラ
１のフランジ１ａと下ガイド板４の突起４ａによる用紙
Ｐのコシ付けが妨げられず、小サイズから大サイズの用
紙まで、また薄紙から厚紙まで用紙Ｐのコシ付け機能が
確保でき、排紙トレイ６上への用紙Ｐのスタック性も良
好に保たれる。The static elimination brush 5 attached to the upper guide plate 3
Has a brush 7 at both ends of a spine portion 8, and a central portion 9 is formed of a portion without a brush, so that the tip of the brush 7 can contact only at both ends of the stiffened paper P. ing. Accordingly, in the central portion 9 of the discharging brush 5, the stiffness of the paper P due to the flange 1a of the paper discharge roller 1 and the projection 4a of the lower guide plate 4 is not hindered, and from small to large size paper and from thin to thick paper. The stiffening function of the sheet P can be ensured, and the stacking property of the sheet P on the sheet discharge tray 6 is also kept good.
【００１０】図３は、上記実施形態で用いた除電ブラシ
５の変形例を示す断面図（Ａ）及び斜視図（Ｂ）であ
る。この例の除電ブラシ５は、全長にわたって元々は均
一な長さのブラシ７を有し、ブラシ無しとする中央部９
にその部分のブラシ７を巻き込むように粘着シート１０
を貼り付けてブラシのある部分とブラシ無し部分を形成
している。図中２点鎖線１１が粘着シート１０による巻
き込み前のブラシ７の先端位置を示す。もちろんこの実
施形態では、ブラシ７が図示のように巻き込める可撓性
を有する必要がある。FIG. 3 is a sectional view (A) and a perspective view (B) showing a modification of the charge removing brush 5 used in the above embodiment. The neutralization brush 5 of this example has a brush 7 having a uniform length from the beginning over its entire length, and a central portion 9 having no brush.
Adhesive sheet 10 so that brush 7 of that portion is
To form a portion with a brush and a portion without a brush. In the figure, a two-dot chain line 11 indicates a tip position of the brush 7 before being wound by the adhesive sheet 10. Of course, in this embodiment, it is necessary that the brush 7 has flexibility to be wound up as shown.
【００１１】図４は、本発明に係る排紙装置の第２の実
施形態の右側面図（Ａ）及び除電ブラシの斜視図（Ｂ）
である。この実施形態では、下ガイド板４は平坦部材
で、上ガイド板３に用紙Ｐへのコシ付け用の突起３ａが
設けてある。この突起３ａの働きにより用紙Ｐは中央部
と両端部が低く、中央と両端の間が高くなって（図示せ
ず）コシが与えられて排紙トレイ６上にスタックされ
る。除電ブラシ２０は、このコシ付けの形態に対応させ
て、両端部と中央部の３箇所にブラシ７を備え、それら
の間の部位２１がブラシ無しの部分で構成されており、
コシ付けされた用紙Ｐの中央部と両端部でのみブラシ７
の先端が接触可能になっている。そのたの構成、動作、
機能については第１の実施形態と同様であるので、共通
する部分に共通する符号を付すに止め、重複する説明は
省略する。FIG. 4 is a right side view (A) of a sheet discharging device according to a second embodiment of the present invention, and a perspective view (B) of a discharging brush.
It is. In this embodiment, the lower guide plate 4 is a flat member, and the upper guide plate 3 is provided with a projection 3a for stiffening the paper P. Due to the function of the projections 3a, the paper P is low at the center and both ends and high between the center and both ends (not shown), and is given a stiffness to be stacked on the discharge tray 6. The static elimination brush 20 is provided with three brushes 7 at both ends and a central portion corresponding to this stiffening mode, and a portion 21 between them is a portion without a brush.
Brush 7 only at the center and both ends of the stiffened paper P
Can be contacted. Other configuration, operation,
Since the functions are the same as those of the first embodiment, the common parts will be denoted by the same reference numerals, and redundant description will be omitted.
【００１２】[0012]
【発明の効果】請求項１に係る排紙装置は、以上説明し
てきたように、排紙ローラか排紙ガイド板の少なくとも
いずれか一方に用紙にコシを付ける部位を有し、かつ排
紙出口に設けた除電ブラシが、用紙のコシ付けを妨げな
いように一部ブラシのない部分を有するので、簡単な構
成で、小サイズから大サイズの用紙まで、また薄紙から
厚紙まで用紙のコシ付け機能を発揮でき、排紙トレイ上
での用紙のスタック性を良好に保つことができ、かつコ
スト高を招くことがないという効果を奏する。According to the first aspect of the present invention, as described above, at least one of the discharge roller and the discharge guide plate has a portion for stiffening a sheet, and a discharge outlet. The static elimination brush provided in the section has a part without a brush so as not to hinder the stiffening of the paper, so with a simple configuration, the stiffening function of the paper from small to large size paper and from thin paper to thick paper And the stackability of the sheets on the sheet discharge tray can be kept good, and the cost is not increased.
【００１３】請求項２に係る排紙装置は、以上説明して
きたように、除電ブラシの有するブラシが可撓性を有
し、除電ブラシのブラシ無しの部分を、その部分が備え
るブラシを粘着シートの巻き付けによって覆って形成す
るようにしたので、上記共通の工科に加え、除電ブラシ
の特殊なカットや植毛の有無部分を設ける必要がなく、
簡単に必要な除電ブラシの形状を構成でき、極めてコス
ト効率のよいものとなるという効果を奏する。According to a second aspect of the present invention, as described above, the brush of the static elimination brush has flexibility, and the brushless portion of the static elimination brush is provided with an adhesive sheet. So that in addition to the above-mentioned common engineering, there is no need to provide a special cut of the static elimination brush or the presence or absence of flocking,
The required shape of the static elimination brush can be easily configured, which is very cost-effective.
【図１】本発明に係る排紙装置の一実施形態の断面図
（Ａ）、同右側面図（Ｂ）及び除電ブラシの斜視図
（Ｃ）である。FIG. 1 is a sectional view (A), a right side view (B), and a perspective view (C) of a discharging brush according to an embodiment of a sheet discharging device according to the present invention.
【図２】図１の実施形態装置の動作を示す斜視図であ
る。FIG. 2 is a perspective view showing an operation of the embodiment device of FIG. 1;
【図３】図１の実施形態で用いた除電ブラシの変形例を
示す断面図（Ａ）及び斜視図（Ｂ）である。3A and 3B are a cross-sectional view and a perspective view, respectively, showing a modification of the charge removing brush used in the embodiment of FIG.
【図４】本発明に係る排紙装置の第２の実施形態の右側
面図（Ａ）及び除電ブラシの斜視図（Ｂ）である。FIGS. 4A and 4B are a right side view and a perspective view of a discharging brush according to a second embodiment of the present invention; FIGS.
１ 排紙ローラ １ａ 排紙ローラのフランジ ２ 排紙従動ローラ ３ 上ガイド板 ３ａ 上ガイド板の突起 ４ 下ガイド板 ４ａ 下ガイド板の突起 ５ 除電ブラシ ６ 排紙トレイ ７ ブラシ ８ 除電ブラシの背骨部 ９ ブラシ無しの部分 １０ 粘着シート ２０ 除電ブラシ ２１ ブラシ無しの部分 Ｐ 用紙 DESCRIPTION OF SYMBOLS 1 Discharge roller 1a Flange of discharge roller 2 Discharge driven roller 3 Upper guide plate 3a Projection of upper guide plate 4 Lower guide plate 4a Projection of lower guide plate 5 Static elimination brush 6 Discharge tray 7 Brush 8 Spine of static elimination brush 9 Part without brush 10 Adhesive sheet 20 Static elimination brush 21 Part without brush P Paper
Claims (2)
しつつ排紙ローラ及び排紙ガイド板により排紙トレイ上
へ用紙を排出する排紙装置において、上記排紙ローラと
上記排紙ガイド板の少なくともいずれか一方に、排紙す
る用紙にコシを付けるための部位を設けるとともに、上
記除電ブラシが、上記用紙にコシを付ける部位に対応す
る部位にブラシのない部分を有することを特徴とする排
紙装置。A discharge roller and a discharge guide plate that discharge paper onto a discharge tray while discharging electricity by a discharge brush provided at a discharge outlet. A portion for stiffening a sheet to be discharged is provided on at least one of the sheets, and the static elimination brush has a portion without a brush at a portion corresponding to a portion for stiffening the sheet. Paper ejection device.
を有し、上記除電ブラシのブラシ無しとする部分を、該
部分が備えるブラシを粘着シートの巻き付けによって覆
って形成してなることを特徴とする請求項１の排紙装
置。2. A brush included in the charge elimination brush having flexibility, and a portion of the charge elimination brush having no brush is formed by covering a brush provided in the portion by winding an adhesive sheet. 2. The sheet discharging device according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36302197A JP3754548B2 (en) | 1997-12-11 | 1997-12-11 | Paper discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36302197A JP3754548B2 (en) | 1997-12-11 | 1997-12-11 | Paper discharge device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11171388A true JPH11171388A (en) | 1999-06-29 |
| JP3754548B2 JP3754548B2 (en) | 2006-03-15 |
Family
ID=18478320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36302197A Expired - Fee Related JP3754548B2 (en) | 1997-12-11 | 1997-12-11 | Paper discharge device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3754548B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001315401A (en) * | 2000-05-01 | 2001-11-13 | Ricoh Co Ltd | Apparatus for carrying sheet-like medium |
| JP2002284421A (en) * | 2001-03-23 | 2002-10-03 | Ricoh Co Ltd | Sheet conveying device, and image forming device having it |
| US7775514B2 (en) | 2007-02-23 | 2010-08-17 | Toshiba Tec Kabushiki Kaisha | Sheet post-processing apparatus |
| US9187284B2 (en) | 2013-08-22 | 2015-11-17 | Canon Kabushiki Kaisha | Sheet discharge device and image forming apparatus |
| JP2016108102A (en) * | 2014-12-08 | 2016-06-20 | キヤノン株式会社 | Static elimination brush and image formation apparatus |
| JP2019085274A (en) * | 2019-03-15 | 2019-06-06 | キヤノン株式会社 | Static elimination brush and image formation apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10157905A (en) * | 1996-11-29 | 1998-06-16 | Canon Inc | Sheet discharge device and image forming device |
-
1997
- 1997-12-11 JP JP36302197A patent/JP3754548B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10157905A (en) * | 1996-11-29 | 1998-06-16 | Canon Inc | Sheet discharge device and image forming device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001315401A (en) * | 2000-05-01 | 2001-11-13 | Ricoh Co Ltd | Apparatus for carrying sheet-like medium |
| JP2002284421A (en) * | 2001-03-23 | 2002-10-03 | Ricoh Co Ltd | Sheet conveying device, and image forming device having it |
| US7775514B2 (en) | 2007-02-23 | 2010-08-17 | Toshiba Tec Kabushiki Kaisha | Sheet post-processing apparatus |
| US9187284B2 (en) | 2013-08-22 | 2015-11-17 | Canon Kabushiki Kaisha | Sheet discharge device and image forming apparatus |
| JP2016108102A (en) * | 2014-12-08 | 2016-06-20 | キヤノン株式会社 | Static elimination brush and image formation apparatus |
| JP2019085274A (en) * | 2019-03-15 | 2019-06-06 | キヤノン株式会社 | Static elimination brush and image formation apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3754548B2 (en) | 2006-03-15 |
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