JP2005070459A - Image forming apparatus - Google Patents

Image forming apparatus Download PDF

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JP2005070459A
JP2005070459A JP2003300487A JP2003300487A JP2005070459A JP 2005070459 A JP2005070459 A JP 2005070459A JP 2003300487 A JP2003300487 A JP 2003300487A JP 2003300487 A JP2003300487 A JP 2003300487A JP 2005070459 A JP2005070459 A JP 2005070459A
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exhaust port
image forming
forming apparatus
exhaust
paper discharge
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JP4311539B2 (en
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Takefumi Adachi
猛文 足立
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus which prevents exhaust gas from contacting a person carrying out desk work, is silent in exhaust fan sound and permits arranging of its back snugly along a wall. <P>SOLUTION: The image forming apparatus, equipped with an intra-barrel paper discharge section C, is provided with exhaust ports A and B within the barrel. As a result, the exhaust gas is prevented from contacting the person carrying out desk work, the noise is shut off by the intra-barrel exhaust gas, and therefore the exhaust fan sound is silent and even more the arrangement of an option, such as a finisher of an external option, is easy. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、装置のほぼ中央部にある胴内排紙部を備える画像形成装置に関するものである。   The present invention relates to an image forming apparatus provided with an in-body sheet discharge portion at a substantially central portion of the apparatus.

従来、画像形成装置は駆動源等から発生する装置内の熱い空気の排気を行うために排気口を設けるのが一般的である。   2. Description of the Related Art Conventionally, an image forming apparatus is generally provided with an exhaust port for exhausting hot air generated in a device generated from a drive source or the like.

しかしながら、この場合に画像形成装置の背面や、横に排気口を配置した場合、画像形成装置近傍で仕事をする人の顔に排気が当ったり、また、排気ファンの騒音が気になる人も多い。
画像形成装置の背面に排気ファンがある場合は、壁にぴったり配置することができず、少し隙間を空ける必要がある。これは画像形成装置の設置面積が大きくなる要因となる。
また、排気口が側面にある場合には、フィニッシャなどのオプションを配置しずらく、これを配置することで、排気口が塞がれてしまう不都合も生じる。
そこで本発明の目的は、上記の問題点を解決するために、排気が、デスクワークしている人にあたらず、排気ファン音が静かで、装置背面を壁にぴったり配置できる画像形成装置を提供することにある。 However, in this case, if an exhaust port is disposed on the back side or the side of the image forming apparatus, exhaust air may hit the face of a person who works near the image forming apparatus, or a person who is concerned about the noise of the exhaust fan. Many.
If there is an exhaust fan on the back of the image forming apparatus, it cannot be placed exactly on the wall, and it is necessary to leave a little gap. This is a factor that increases the installation area of the image forming apparatus.
In addition, when the exhaust port is on the side, it is difficult to arrange options such as a finisher, and disposing the option causes a disadvantage that the exhaust port is blocked.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an image forming apparatus in which the exhaust does not hit a deskworker, the exhaust fan sound is quiet, and the rear surface of the apparatus can be placed on the wall in order to solve the above problems. There is.

前記の課題を解決するために、請求項１記載の発明では、胴内排紙部を備える画像形成装置において、排気口を胴内部に設けた画像形成装置を最も主要な特徴とする。
請求項２記載の発明では、前記排気口が胴内部の複数面に開口している請求項１記載の画像形成装置を主要な特徴とする。
請求項３記載の発明では、前記排気口が、オプションユニットが追加されても排気口が塞がれない位置に配置してある請求項１記載の画像形成装置を主要な特徴とする。
請求項４記載の発明では、前記排気口を排紙トレーの上面、転写紙の排紙で塞がれない部分に設けた請求項１記載の画像形成装置を最も主要な特徴とする。
請求項５記載の発明では、前記排紙トレーが搬送面方向に平行なリブ状凹凸を有するリブ形状部材からなり、このリブ形状部材の側面に前記排気口を設けた請求項１記載の画像形成装置を主要な特徴とする。
請求項６記載の発明では、前記吸排気口がその背面側に向かって開口している請求項５記載の画像形成装置を主要な特徴とする。 In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that, in an image forming apparatus provided with an in-cylinder discharge section, an image forming apparatus provided with an exhaust port inside the cylinder is the main feature.
According to a second aspect of the present invention, the image forming apparatus according to the first aspect is characterized in that the exhaust port opens on a plurality of surfaces inside the cylinder.
According to a third aspect of the present invention, the image forming apparatus according to the first aspect is characterized in that the exhaust port is disposed at a position where the exhaust port is not blocked even if an optional unit is added.
According to a fourth aspect of the invention, the image forming apparatus according to the first aspect is characterized in that the exhaust port is provided on the upper surface of the paper discharge tray and in a portion not blocked by the discharge of the transfer paper.
According to a fifth aspect of the present invention, the sheet discharge tray is made of a rib-shaped member having rib-shaped irregularities parallel to the conveyance surface direction, and the exhaust port is provided on a side surface of the rib-shaped member. Features the device.
According to a sixth aspect of the invention, the image forming apparatus according to the fifth aspect is characterized in that the intake / exhaust port is opened toward the back side thereof.

請求項１によれば、排気がデスクワークしている人にあたらず、胴内排気で騒音が遮蔽されるため排気ファン音が静かで、しかも外部オプションのフィニッシャなどのオプションが配置しやすい。
請求項２によれば、胴内の正面と、右面に排気口を設けることで、正面排気口から、電装部品の排気、右面取り定着からの排気をするなど、胴内を有効に使用することが可能となる。
請求項３によれば、正面上方に排気口を設けることで、排気口が塞がれてしまうのを防止することが可能となる。
請求項４によれば、排紙トレー上に排紙された転写紙が積載されるが、そのエリアを避けた部分に、排気口を設けることによってより広い範囲に、排気口を設置できる。
請求項５によれば、積載され転写紙で塞がれないようにし、排気口面積を広げることができる。
請求項６によれば、排紙トレー上の排気口が機械正面からは見えないようにすることで、機械の見栄えを良くすることが可能となる。 According to the first aspect, the exhaust does not hit the deskworker, the noise is shielded by the in-body exhaust, the exhaust fan sound is quiet, and options such as an external option finisher are easy to arrange.
According to claim 2, by providing exhaust ports on the front and right sides of the body, the interior of the body can be used effectively, such as exhausting electrical parts from the front exhaust port and exhausting from the right chamfer fixing. Is possible.
According to claim 3, it is possible to prevent the exhaust port from being blocked by providing the exhaust port above the front surface.
According to the fourth aspect of the invention, the discharged transfer paper is stacked on the paper discharge tray. By providing the exhaust port in a portion avoiding the area, the exhaust port can be installed in a wider range.
According to the fifth aspect of the present invention, it is possible to increase the exhaust port area by preventing the sheet from being loaded and blocked by the transfer paper.
According to the sixth aspect, it is possible to improve the appearance of the machine by making the exhaust port on the paper discharge tray invisible from the front of the machine.

以下、図面により本発明の実施の形態を詳細に説明する。図１は画像形成装置の全体構成を示す概略図である。自動原稿読取装置９で読み取った原稿画像を、給紙ユニット１より給紙された転写紙に印字する。
印字プロセスは、光学系２よりレーザにより感光体ユニット４の感光体４ａに潜像を書きこみ、現像部分で顕像化し顕像化された像を紙に転写し、定着ユニット６で転写紙に定着させる。
その後、排紙分離部７で、両面時は両面ユニット５へ、上排紙時は上排紙ビン８へ、フィニッシャ排紙時は中継ユニット１０経由でフィニッシャ１１へ、夫々排紙される。手差し部３もオプションで装備できる。
図２は胴内排紙部を設けた画像形成装置の外観を示す斜視図である。図２において矢印で示した部分が胴内排紙部Ｃである。排紙がスタックされる下面部分が排紙トレーである。
図３は胴内排紙部を、やや下方向から見上げた図２の画像形成装置の外観を示す斜視図である。図３において胴内排紙部Ｃの内側壁部分の２面（少なくとも一面）に、排気口Ａ、排気口Ｂを設ける。排気口Ｂは点線で示した設置限界ラインよりも上側に配置されている。点線より下はオプションユニット（図示せず）を設置すると隠れてしまい、排気口Ｂを塞いでしまうため、排気口をあけても意味が無い。
胴内排紙部Ｃ内に設置するオプションがある。例えば、１ビン排紙ユニットを装着した場合は、胴内排紙部の正面が塞がれてしまう。しかし、全面でないので、正面上方に排気口を設けることで、排気口が塞がれてしまうことを防止する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing the overall configuration of the image forming apparatus. The document image read by the automatic document reader 9 is printed on a transfer sheet fed from the sheet feeding unit 1.
In the printing process, a latent image is written on the photosensitive member 4a of the photosensitive unit 4 by the laser from the optical system 2, and the developed and visualized image is transferred to paper. Let it settle.
Thereafter, the paper discharge separation unit 7 discharges the paper to the duplex unit 5 at the time of double-sided discharge, to the upper paper discharge bin 8 at the time of upper paper discharge, and to the finisher 11 via the relay unit 10 at the time of finisher paper discharge. The manual feed section 3 can also be equipped as an option.
FIG. 2 is a perspective view showing an external appearance of the image forming apparatus provided with the in-body discharge unit. A portion indicated by an arrow in FIG. A lower surface portion on which the paper discharge is stacked is a paper discharge tray.
FIG. 3 is a perspective view showing the appearance of the image forming apparatus in FIG. In FIG. 3, an exhaust port A and an exhaust port B are provided on two surfaces (at least one surface) of the inner wall portion of the in-body discharge section C. The exhaust port B is disposed above the installation limit line indicated by a dotted line. If an optional unit (not shown) is installed below the dotted line, it will be hidden and the exhaust port B will be blocked, so there is no point in opening the exhaust port.
There is an option to install in the in-body discharge section C. For example, when the 1-bin paper discharge unit is installed, the front of the in-body paper discharge unit is blocked. However, since it is not the entire surface, the exhaust port is prevented from being blocked by providing the exhaust port above the front surface.

図４は胴内排紙部の排紙トレー上に転写紙が排紙されている状態を示す図２の画像形成装置の外観を示す斜視図である。図４において排紙トレーＤ上で排紙されている転写紙Ｐの排紙（積載）エリア外に排気口を設けることで、排気口面積を大きくすることができる。なお、排紙口から積載エリアまでの排紙経路に相当する側面については、排気口を設けても良いし、その部位を回避するようにしてもよい。
胴内排紙部の下面は、排紙トレーＤを兼ねている。その排紙トレーＤ上面に、排紙された転写紙Ｐが積載されるが、そのエリアを避けた部分に、排気口を設けることでより広い範囲に、排気口を設置できる。
図５は胴内排紙部のリブ形状の排紙トレーを示す拡大図である。図６は図５のリブ形状の排紙トレーＤに設けた排気口を示す断面図である。図５および図６において、排気口１２ａは排紙トレーＤに転写紙Ｐが有っても、排気ができるように形成されている。
排紙トレーＤは、図示のごとく、リブ形状部材１２からなり、このリブ形状部材１２の上面で、転写紙Ｐを保持し、側面に排気口１２ａを設けることで、排気を可能にしている。この場合にリブ形状部材１２の両側に排気口１２ａを設けている。リブ形状部材１２は、排紙方向と平行な方向へ直線的に延び、且つ排紙方向と直交する方向へ連続する凹凸、或いは波形状の板材の側面に排気口を設けた形状を有する。 FIG. 4 is a perspective view showing an appearance of the image forming apparatus in FIG. 2 showing a state in which the transfer sheet is discharged onto the discharge tray of the in-body discharge unit. In FIG. 4, the exhaust port area can be increased by providing the exhaust port outside the discharge (stacking) area of the transfer paper P discharged on the discharge tray D. An exhaust port may be provided on the side surface corresponding to the paper discharge path from the paper discharge port to the stacking area, or that portion may be avoided.
The lower surface of the in-body discharge unit also serves as the discharge tray D. The discharged transfer paper P is stacked on the upper surface of the paper discharge tray D. By providing an exhaust port in a portion avoiding the area, the exhaust port can be installed in a wider range.
FIG. 5 is an enlarged view showing a rib-shaped discharge tray of the in-body discharge portion. FIG. 6 is a cross-sectional view showing an exhaust port provided in the rib-shaped discharge tray D of FIG. 5 and 6, the exhaust port 12a is formed so that the exhaust can be performed even when the transfer paper P is present in the paper discharge tray D.
As shown in the drawing, the paper discharge tray D is composed of a rib-shaped member 12. The transfer paper P is held on the upper surface of the rib-shaped member 12, and the exhaust port 12 a is provided on the side surface to allow exhaust. In this case, exhaust ports 12 a are provided on both sides of the rib-shaped member 12. The rib-shaped member 12 has a shape that linearly extends in a direction parallel to the paper discharge direction and has an unevenness that is continuous in a direction orthogonal to the paper discharge direction, or an exhaust port on a side surface of a corrugated plate material.

図７はリブ形状部材の片側に排気口を設けた例を示す概略断面図である。図７において排気口１２ａは片側、機械正面より見たとき見えない側に設けられ、排紙トレーＤに排気口が見えず、見栄えが良い。
排紙トレーＤ上面に搬送面方向に平行にリブ状凹凸を設け、また、排気口が機械の背面側に向かって開口していることにより、オプションユニットが追加されても塞がれない位置に配置することができる。
図８は本発明の画像形成装置における排気経路の１例を示す概略図である。図８において、後側板１３と外装カバー１４との間に隙間１５を設け、後側板１３と外装カバー１４で囲まれた空間をダクト（煙突形状）とみなし、その隙間１５を経由して排気口Ａ、Ｂ胴内に排気を導く。図中、細かい矢印は気流の方向を示している。
図８には、底板１６、前側板１７、排紙ローラ（排紙口）１８、スキャナ部分１９、胴内部分２０が示される。
上記排気口は排気装置として説明したので排気口としているが、吸気口として使用しても何ら問題が無いことは言うまでも無い。また、排気口／吸気口として使用する場合、自然排気／吸気、強制排気／吸気（ファンなどを使用）のどちらでも使用できる。吸排気口の部分に図示しないダクト等を配置すればより効率がアップする。
FIG. 7 is a schematic cross-sectional view showing an example in which an exhaust port is provided on one side of the rib-shaped member. In FIG. 7, the exhaust port 12a is provided on one side, the side that is not visible when viewed from the front of the machine, and the exhaust port is not visible on the paper discharge tray D, so that the appearance is good.
The upper surface of the paper discharge tray D is provided with rib-shaped irregularities parallel to the transport surface direction, and the exhaust port is open toward the rear side of the machine so that it cannot be blocked even if an optional unit is added. Can be arranged.
FIG. 8 is a schematic view showing an example of an exhaust path in the image forming apparatus of the present invention. In FIG. 8, a gap 15 is provided between the rear side plate 13 and the outer cover 14, and the space surrounded by the rear side plate 13 and the outer cover 14 is regarded as a duct (chimney shape), and the exhaust port passes through the gap 15. A and B lead exhaust into the body. In the figure, fine arrows indicate the direction of airflow.
FIG. 8 shows a bottom plate 16, a front side plate 17, a paper discharge roller (paper discharge port) 18, a scanner portion 19, and an in-body portion 20.
Since the exhaust port has been described as an exhaust device, it is used as an exhaust port. However, it goes without saying that there is no problem even if it is used as an intake port. When used as an exhaust port / intake port, either natural exhaust / intake or forced exhaust / intake (using a fan or the like) can be used. If a duct or the like (not shown) is arranged at the intake / exhaust port, the efficiency is further improved.

画像形成装置の全体構成を示す概略図。1 is a schematic diagram illustrating an overall configuration of an image forming apparatus. 胴内排紙部を設けた画像形成装置の外観を示す斜視図。FIG. 2 is a perspective view illustrating an appearance of an image forming apparatus provided with an in-body discharge unit. 胴内排紙部を、やや下方向から見上げた図２の画像形成装置の外観を示す斜視図。FIG. 3 is a perspective view showing an appearance of the image forming apparatus in FIG. 2 in which the in-body discharge unit is looked up from a slightly downward direction. 胴内排紙部の排紙トレー上に転写紙が排紙されている状態を示す図２の画像形成装置の外観を示す斜視図。FIG. 3 is a perspective view showing an appearance of the image forming apparatus in FIG. 2 showing a state in which transfer paper is discharged onto a paper discharge tray of the in-body paper discharge unit. 胴内排紙部のリブ形状の排紙トレーを示す拡大図。The enlarged view which shows the rib-shaped paper discharge tray of the in-body paper discharge part. 図５のリブ形状の排紙トレーに設けた排気口を示す断面図。Sectional drawing which shows the exhaust port provided in the rib-shaped discharge tray of FIG. リブ形状部材の片側に排気口を設けた例を示す概略断面図。The schematic sectional drawing which shows the example which provided the exhaust port in the one side of a rib-shaped member. 本発明の画像形成装置における排気経路の１例を示す概略図。FIG. 3 is a schematic diagram illustrating an example of an exhaust path in the image forming apparatus of the present invention.

符号の説明Explanation of symbols

Ａ 排気口
Ｂ 排気口
Ｃ 胴内排紙部
Ｄ 排紙トレー
１２ リブ形状部材（排紙トレー）
１２ａ 排気口
A Exhaust port B Exhaust port C In-body discharge part D Discharge tray 12 Rib-shaped member (discharge tray)
12a Exhaust port

Claims (6)

胴内排紙部を備える画像形成装置において、排気口を胴内排紙部内に設けたことを特徴とする画像形成装置。   An image forming apparatus having an in-cylinder paper discharge unit, wherein an exhaust port is provided in the in-cylinder paper discharge unit. 前記排気口が胴内排紙部の少なくとも一つの側壁面に開口していることを特徴とする請求項１記載の画像形成装置。   The image forming apparatus according to claim 1, wherein the exhaust port is opened in at least one side wall surface of the in-body discharge unit. 前記排気口は、オプションユニットが追加されても排気口が塞がれない位置に配置してあることを特徴とする請求項１記載の画像形成装置。   2. The image forming apparatus according to claim 1, wherein the exhaust port is disposed at a position where the exhaust port is not blocked even if an optional unit is added. 前記排気口を排紙トレーの上面に積載された転写紙により塞がれない部分に設けたことを特徴とする請求項１記載の画像形成装置。   2. The image forming apparatus according to claim 1, wherein the exhaust port is provided in a portion that is not blocked by the transfer paper loaded on the upper surface of the paper discharge tray. 前記排紙トレーが搬送面方向に平行なリブ状凹凸を有するリブ形状部材からなり、このリブ形状部材の側面に前記排気口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。   The image forming apparatus according to claim 1, wherein the discharge tray is formed of a rib-shaped member having rib-shaped irregularities parallel to the conveyance surface direction, and the exhaust port is provided on a side surface of the rib-shaped member. 前記吸排気口が、前記リブ形状部材の背面側に形成されていることを特徴とする請求項５記載の画像形成装置。
The image forming apparatus according to claim 5, wherein the intake / exhaust port is formed on a back side of the rib-shaped member.
JP2003300487A 2003-08-25 2003-08-25 Image forming apparatus Expired - Fee Related JP4311539B2 (en)

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