JPH08133550A

JPH08133550A - Printer

Info

Publication number: JPH08133550A
Application number: JP6279416A
Authority: JP
Inventors: Atsushi Akiyama; 厚秋山
Original assignee: TEC CORP
Current assignee: TEC CORP
Priority date: 1994-11-14
Filing date: 1994-11-14
Publication date: 1996-05-28

Abstract

PURPOSE: To provide a discharging device by which bending of an end surface of a paper sheet can be prevented by attaching a cover so as to cover an opening part of a lower discharging roller. CONSTITUTION: In a printer provided with a cage body enclosing an image forming means, a discharging port 42 to discharge a paper sheet P on which an image is formed by the image forming means, plural discharging rollers 34 to rotate in the direction for discharging the paper sheet P in the vicinity of the discharging port 42 and a paper sheet receiver 32 to receive the paper sheet P discharged from the discharging port 42, the discharge port 42 in which a rolling-in preventive cover 35 is arranged toward a discharging roller 34a positioned above, is provided along an outer peripheral surface of a discharging roller 34b positioned below on the paper sheet receiver 32 side.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は、例えばプリンタ、ファ
クシミリ、複写機等の印刷装置に関し、詳しくは印刷さ
れた用紙を排出する排出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing device such as a printer, a facsimile or a copying machine, and more particularly to a discharging device for discharging printed paper.

【０００２】[0002]

【従来の技術】図６［Ａ］は、従来技術に係るプリンタ
の外観を示す斜視図である。2. Description of the Related Art FIG. 6A is a perspective view showing the external appearance of a printer according to the prior art.

【０００３】プリンタの筐体１は、上カバ−２と下カバ
−３とからなり、支持軸６を支点として上カバ−２が開
閉するようになっている。The casing 1 of the printer is composed of an upper cover-2 and a lower cover-3, and the upper cover-2 is opened and closed with a support shaft 6 as a fulcrum.

【０００４】下カバ−３の側面には、給紙カセット（図
示せず）が着脱自在に取付けられる給紙カセット取付部
４を設けるとともに、下カバ−３の内部には、図示しな
い感光ドラムと現像手段、帯電手段等の像形成手段が内
臓されている。A paper feed cassette mounting portion 4 to which a paper feed cassette (not shown) is detachably mounted is provided on the side surface of the lower cover-3, and a photosensitive drum (not shown) is provided inside the lower cover-3. Image forming means such as developing means and charging means are incorporated.

【０００５】上カバ−２の上面には、断面略直角三角形
状の凹部を形成した用紙受け５と、この用紙受け５の一
方端には隔壁７を設け、上部隔壁７ａと下部隔壁７ｂと
の間には用紙Ｐを排出する排出口１０が設けられている
とともに、この排出口１０の内部近傍には上下一対の排
出ロ−ラ８が用紙Ｐを外部に排出する方向に回転するよ
うに取付けられている。On the upper surface of the upper cover-2, a paper receiver 5 having a recess having a substantially right triangle shape in cross section is formed, and a partition 7 is provided at one end of the paper receiver 5, and an upper partition 7a and a lower partition 7b are provided. A discharge port 10 for discharging the paper P is provided between them, and a pair of upper and lower discharge rollers 8 are mounted in the vicinity of the discharge port 10 so as to rotate in a direction for discharging the paper P to the outside. Has been.

【０００６】排出ロ−ラ８は、図６［Ｂ］に示すよう
に、上部排出ロ−ラ８ａと下部排出ロ−ラ８ｂとからな
り、上部排出ロ−ラ８ａは上部隔壁７ａ内に設けられ、
下部排出ロ−ラ８ｂの外周面Ａは排出口１０の開口近傍
に位置して設けられている。さらに、下部隔壁７ｂの上
端Ｂは下部排出ロ−ラ８ｂの外周下部と隙間を設けて形
成されている。As shown in FIG. 6B, the discharge roller 8 comprises an upper discharge roller 8a and a lower discharge roller 8b, and the upper discharge roller 8a is provided inside the upper partition wall 7a. The
The outer peripheral surface A of the lower discharge roller 8b is provided near the opening of the discharge port 10. Further, the upper end B of the lower partition wall 7b is formed with a gap from the lower outer periphery of the lower discharge roller 8b.

【０００７】用紙受け５の深さＬは、排出口１０から排
出される用紙Ｐが所定枚数を積層する深さとなってい
る。The depth L of the paper receiver 5 is the depth at which a predetermined number of papers P discharged from the discharge port 10 are stacked.

【０００８】排出装置の作用について記載する。The operation of the ejector will be described.

【０００９】給紙カセット（図示せず）から像形成手段
に搬送された用紙Ｐに、像形成手段によりトナ−像が形
成され、定着装置により像が定着される。この用紙Ｐ
は、図６［Ｂ］に示すように、排出方向側に回転する排
出ロ−ラ８間に挟まれてＣ方向に排出されて、用紙受け
５に用紙Ｐが排出される。The toner image is formed by the image forming means on the paper P conveyed from the paper feeding cassette (not shown) to the image forming means, and the image is fixed by the fixing device. This paper P
As shown in FIG. 6B, the sheet P is discharged in the C direction by being sandwiched between the discharge rollers 8 rotating in the discharging direction, and the sheet P is discharged to the sheet receiver 5.

【００１０】[0010]

【発明が解決しようとする課題】上記のように従来の排
出装置は、用紙受け５の深さＬより多く用紙Ｐが積層さ
れると、用紙Ｐの端面が回転している下部排出ロ−ラ８
ｂの外周面に当たったり巻き込まれたりし、曲がった
り、切れたりするという問題があった。As described above, in the conventional discharging device, when the sheets P are stacked more than the depth L of the sheet receiver 5, the lower discharging roller in which the end surface of the sheets P is rotating. 8
There was a problem that the outer peripheral surface of b was hit or caught, and bent or cut.

【００１１】本発明は上記の点に鑑みてなされたもの
で、下部排出ロ−ラ８ｂの外周開口面を覆うようにカバ
−を付けることにより、用紙Ｐの端面が曲がらないよう
にした排出装置を提供することを目的とする。The present invention has been made in view of the above points, and a discharge device in which the end surface of the paper P is not bent by attaching a cover so as to cover the outer peripheral opening surface of the lower discharge roller 8b. The purpose is to provide.

【００１２】[0012]

【課題を解決するための手段】前記目的を達成するため
に、本発明の印刷装置は、像形成手段を内蔵した筐体
と、前記像形成手段により像形成された用紙を排出する
排出口と、前記排出口の近傍で前記用紙を排出する方向
に回転する排出ロ−ラと、前記排出口される排出する前
記用紙を受ける用紙受けとを設けた印刷装置において、
前記用紙受け側で下方に位置する排出ロ−ラの外周面に
沿うように、上方に位置する排出ロ−ラに向けて巻き込
み防止カバ−を設けた排出口を有することを特徴とす
る。In order to achieve the above-mentioned object, a printing apparatus of the present invention comprises a housing containing an image forming means, and a discharge port for discharging a sheet on which an image is formed by the image forming means. A printing device provided with a discharge roller that rotates in a direction of discharging the sheet near the discharge port, and a sheet receiver that receives the discharged sheet discharged from the discharge port,
It is characterized in that it has a discharge port provided with an entrainment prevention cover toward the upper discharge roller so as to follow the outer peripheral surface of the lower discharge roller on the sheet receiving side.

【００１３】[0013]

【作用】上記の構成において、下部排出ロ−ラ３４ｂの
用紙受け３２側に、巻き込み防止カバ−３５を設けたの
で、巻き込み防止カバ−３５の上端部まで排出された用
紙Ｐが積層されても回転している排出ロ−ラ３４ｂに用
紙Ｐの端面が当接しない。このため、用紙Ｐの端面が曲
がったり、切れたり、汚れたりしない。In the above structure, since the roll-up prevention cover 35 is provided on the side of the sheet receiving 32 of the lower discharge roller 34b, even if the sheets P discharged to the upper end of the roll-up prevention cover 35 are stacked. The end surface of the sheet P does not come into contact with the rotating discharge roller 34b. Therefore, the end surface of the paper P is not bent, cut, or dirty.

【００１４】[0014]

【実施例】以下、図１ないし図５を参照して本発明の実
施例を説明する。Embodiments of the present invention will be described below with reference to FIGS.

【００１５】図１は、本発明の第１実施例に係るプリン
タを示す構成図である。FIG. 1 is a block diagram showing a printer according to a first embodiment of the present invention.

【００１６】１１は、プリンタの筐体で、この筐体１１
は、上カバ−１２と下カバ−１３とからなり、上カバ−
１２は支持軸１４を回動中心として開閉可能に枢着され
ている。Reference numeral 11 is a housing of the printer.
Consists of an upper cover 12 and a lower cover 13, and an upper cover.
Reference numeral 12 is pivotally mounted so that it can be opened and closed with a support shaft 14 as a center of rotation.

【００１７】下カバ−１３の側面には、従来技術と同様
に、給紙カセット５２が着脱自在に取付けられる給紙カ
セット取付部５０が設けられている。On the side surface of the lower cover 13, a paper feed cassette mounting portion 50 to which a paper feed cassette 52 is detachably mounted is provided as in the prior art.

【００１８】下カバ−１３の内部には、用紙Ｐを給紙す
る給紙ロ−ラ５１と感光ドラム２０と、この感光ドラム
２０の周辺に感光ドラム２０に作用するプロセス手段、
例えば、帯電部２１、現像ロ−ラ２２、転写部２３およ
びクリ−ニング装置２４等が設けられているとともに、
用紙Ｐに転写された像を定着させる定着ロ−ラ対２５等
が取付けられている。Inside the lower cover 13, a paper feed roller 51 for feeding the paper P, the photosensitive drum 20, and process means for acting on the photosensitive drum 20 around the photosensitive drum 20,
For example, a charging unit 21, a developing roller 22, a transfer unit 23, a cleaning device 24 and the like are provided, and
A fixing roller pair 25 and the like for fixing the image transferred to the paper P are attached.

【００１９】上カバ−１２の内部には、図示しない半導
体レ−ザと、モ−タ２６と、このモ−タ２６によって回
転駆動する回転多面鏡２７と、反射鏡２８および反射鏡
２９等からなる光学ユニット３０が取付けられ、この光
学ユニット３０から出射したレ−ザビ−ムＬが照射する
位置に感光ドラム２０が下カバ−１３に取付けられてい
る。Inside the upper cover 12, a semiconductor laser (not shown), a motor 26, a rotary polygon mirror 27 which is rotationally driven by the motor 26, a reflecting mirror 28, a reflecting mirror 29, and the like. The optical unit 30 is attached, and the photosensitive drum 20 is attached to the lower cover 13 at a position where the laser beam L emitted from the optical unit 30 irradiates.

【００２０】さらに、上カバ−１２の上面には、断面略
直角三角形状の凹部を形成した用紙受け３２を設け、こ
の用紙受け３２の一方端には隔壁３３が設けられてい
る。この隔壁３３は、上部隔壁３３ａと下部隔壁３３ｂ
とからなる。Further, on the upper surface of the upper cover 12, there is provided a paper receiver 32 having a recess having a substantially right triangle shape in cross section, and a partition 33 is provided at one end of the paper receiver 32. The partition 33 includes an upper partition 33a and a lower partition 33b.
Consists of

【００２１】上カバ−１２の内部には、上下一対の排出
ロ−ラ３４が用紙Ｐを排出方向に回転するように取付け
られているとともに、排出ロ−ラ３４は上部排出ロ−ラ
３４ａと下部排出ロ−ラ３４ｂとから構成されている。Inside the upper cover 12, a pair of upper and lower discharge rollers 34 is mounted so as to rotate the paper P in the discharge direction, and the discharge roller 34 is connected to an upper discharge roller 34a. It is composed of a lower discharge roller 34b.

【００２２】上部排出ロ−ラ３４ａは上部隔壁３３ａ内
に配置され、下部排出ロ−ラ３４ｂの用紙受け３２側に
は、図２に示すよう、下部排出ロ−ラ３４ｂの外周面に
沿うように、上部排出ロ−ラ３４ａ側に向けて巻込み防
止カバ−３５が設けられ、この巻込み防止カバ−３５の
上端部に用紙Ｐが排出される排出口４２が設けられてい
る。The upper discharge roller 34a is arranged in the upper partition wall 33a, and the lower discharge roller 34b extends along the outer peripheral surface of the lower discharge roller 34b, as shown in FIG. In addition, a roll-up prevention cover 35 is provided toward the upper discharge roller 34a side, and a discharge port 42 for discharging the paper P is provided at the upper end portion of the roll-up prevention cover 35.

【００２３】なお、この巻き込み防止カバ−３５は、上
カバ−１２の下部隔壁３３ｂに電気溶接して一体に設け
てもよいし、また、図３に示すように、金属性または合
成樹脂性からなる巻き込み防止カバ−３６を別体に設
け、この防止カバ−３６を上カバ−１２の下部隔壁３３
ｂに電気溶接により固定するか、リベット等の締結手段
により防止カバ−３６を上カバ−１２の下部隔壁３３ｂ
に固定してもよい。The entanglement prevention cover 35 may be integrally welded to the lower partition wall 33b of the upper cover 12 or may be made of metal or synthetic resin as shown in FIG. The entanglement prevention cover 36 is separately provided, and the prevention cover 36 is provided on the lower partition wall 33 of the upper cover 12.
b by electric welding or a fastening means such as a rivet to attach the prevention cover 36 to the lower partition wall 33b of the upper cover 12.
It may be fixed to.

【００２４】さらに、図４に示すように、合成樹脂性か
らなる巻き込み防止カバ−３７にボス３７ａを設け、上
カバ−１２にボス３７ａに対応する位置に取付用孔（図
示せず）を設け、このボス３７ａを取付用孔に挿入し、
ボス３７ａの先頭を溶融して固定してもよい。Further, as shown in FIG. 4, a boss 37a is provided on the entanglement prevention cover 37 made of synthetic resin, and a mounting hole (not shown) is provided on the upper cover 12 at a position corresponding to the boss 37a. , Insert this boss 37a into the mounting hole,
The top of the boss 37a may be melted and fixed.

【００２５】また、図５に示すように、用紙受け皿４０
を設けるものにおいては、防止カバ−３８を用紙受け皿
４０に一体的に形成したものでもよい。Further, as shown in FIG.
In the case of providing the sheet cover, the prevention cover 38 may be integrally formed with the sheet tray 40.

【００２６】次に上記実施例の作用を説明する。Next, the operation of the above embodiment will be described.

【００２７】像形成手段に送られた用紙Ｐは、像形成手
段により用紙Ｐにトナ−像が形成され、定着ロ−ラ２５
により用紙Ｐに像を定着させる。像が定着された用紙Ｐ
は、図２に示すように、排出方向側に回転する排出ロ−
ラ３４間に挟まれてＣ方向に排出されて用紙受け３２に
排出される。The sheet P sent to the image forming means has a toner image formed on the sheet P by the image forming means, and the fixing roller 25
The image is fixed on the sheet P by. Paper P on which the image is fixed
Is a discharge roller that rotates in the discharge direction, as shown in FIG.
It is sandwiched between the rollers 34, discharged in the C direction, and discharged to the paper receiver 32.

【００２８】下部排出ロ−ラ３４ｂの用紙受け３２側に
は、下部排出ロ−ラ３４ｂの外周面に沿うように、上部
排出ロ−ラ３４ａ側に向けて巻き込み防止カバ−３５が
設けられているので、巻き込み防止カバ−３５の上端部
まで用紙Ｐが用紙受け５に排出しても、用紙Ｐの端面が
排出ロ−ラ３４ｂに当接しないので、用紙の端面が曲が
ったり、切れたり、汚れたりすることはない。さらに、
従来技術に比べて、防止カバ−３５を付けた高さだけ用
紙Ｐの収納能力を増加させるという効果も奏する。On the sheet receiving side 32 of the lower discharge roller 34b, a wrap-up prevention cover 35 is provided toward the upper discharge roller 34a along the outer peripheral surface of the lower discharge roller 34b. Therefore, even if the paper P is discharged to the paper receiver 5 up to the upper end of the entanglement prevention cover 35, the end surface of the paper P does not contact the discharge roller 34b, so that the end surface of the paper is bent or cut. It does not get dirty. further,
Compared with the prior art, the effect of increasing the storage capacity of the paper P by the height with the prevention cover 35 is also obtained.

【００２９】[0029]

【発明の効果】以上詳記したように本発明によれば、排
出ロ−ラの外周面に沿って巻き込み防止カバ−を設けた
ので、用紙の端面が曲がったり、切れたり、汚れたりす
ることなく、さらに、用紙受け枚数も多くなるという効
果を奏する。As described above in detail, according to the present invention, since the entanglement prevention cover is provided along the outer peripheral surface of the discharge roller, the end surface of the sheet is bent, cut or soiled. In addition, the number of sheets received can be increased.

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

【図１】本発明の第１実施例に係るプリンタを示す構成
図。FIG. 1 is a configuration diagram showing a printer according to a first embodiment of the invention.

【図２】同実施例における排出口を示す一部断面図。FIG. 2 is a partial cross-sectional view showing a discharge port in the embodiment.

【図３】本発明の第２実施例に係る用紙受けを示す斜視
図。FIG. 3 is a perspective view showing a paper receiver according to a second embodiment of the present invention.

【図４】本発明の第３実施例に係る用紙受けを示す断面
図。FIG. 4 is a sectional view showing a paper receiver according to a third embodiment of the present invention.

【図５】本発明の第４実施例に係る用紙受けを示す斜視
図。FIG. 5 is a perspective view showing a paper receiver according to a fourth embodiment of the present invention.

【図６】［Ａ］は従来技術に係るプリンタの外観を示す
斜視図。［Ｂ］は従来技術に係る排出口を示す一部断面
図。FIG. 6A is a perspective view showing the external appearance of a printer according to the related art. [B] is a partial sectional view showing a discharge port according to a conventional technique.

【符号の説明】[Explanation of symbols]

１１…筐体，３２…用紙受け，３４ａ…上部排出ロ−ラ，３４ｂ…下部排出ロ−ラ，３５…巻き込み防止カバ−，４２…排出口，Ｐ…用紙。 11 ... Casing, 32 ... Paper receiver, 34a ... Upper discharge roller, 34b ... Lower discharge roller, 35 ... Entrainment prevention cover, 42 ... Discharge port, P ... Paper.

Claims

【特許請求の範囲】[Claims]

【請求項１】像形成手段を内蔵した筐体と、前記像形成手段により像形成された用紙を排出する排出
口と、前記排出口の近傍で前記用紙を排出する方向に回転する
排出ロ−ラと、前記排出口される排出する前記用紙を受ける用紙受けと
を設けた印刷装置において、前記用紙受け側で下方に位置する排出ロ−ラの外周面に
沿うように、上方に位置する排出ロ−ラに向けて巻き込
み防止カバ−を設けた排出口を有することを特徴とする
印刷装置。1. A housing containing an image forming unit, a discharge port for discharging a sheet on which an image is formed by the image forming unit, and a discharge roller which rotates in a direction of discharging the sheet near the discharge port. In a printing device provided with a sheet receiving unit for receiving the sheet to be discharged that is discharged from the discharge port, a discharge unit positioned above the discharge roller positioned on the sheet receiving side is located above the discharge roller. A printing apparatus having a discharge port provided with a roll-in prevention cover toward a roller.