JPH04128775A - Ozone removing device for electrophotographic device - Google Patents
Ozone removing device for electrophotographic deviceInfo
- Publication number
- JPH04128775A JPH04128775A JP2249761A JP24976190A JPH04128775A JP H04128775 A JPH04128775 A JP H04128775A JP 2249761 A JP2249761 A JP 2249761A JP 24976190 A JP24976190 A JP 24976190A JP H04128775 A JPH04128775 A JP H04128775A
- Authority
- JP
- Japan
- Prior art keywords
- duct
- exhaust fan
- ozone
- corona discharger
- charger
- 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
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 108091008695 photoreceptors Proteins 0.000 claims description 16
- 230000007423 decrease Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Control Or Security For Electrophotography (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
【発明の詳細な説明】
Ｌ】」Ｊ夏Ｕ１分１−
この発明は、レーザを用いたプリンタ・複写機・ファク
シミリなど、電子写真方式により用紙に記録を行う電子
写真装置であって、詳しくは、感光体の下側にコロナ放
電器を配置し、その感光体と平行にチャージャワイヤを
掛け渡すとともに、そのチャージャワイヤをシールドケ
ースで被った電子写真装置に適用し得る。さらに詳しく
は、そのような電子写真装置において、そのコロナ放電
器より発生するオゾンを排気ファンによりダクトを介し
て排出するオゾン除去装置に関する。[Detailed Description of the Invention] L] "J Summer U1 Minute 1- This invention relates to an electrophotographic device that records on paper using an electrophotographic method, such as a printer, copying machine, or facsimile using a laser. The present invention can be applied to an electrophotographic apparatus in which a corona discharger is disposed below a photoconductor, a charge wire is stretched parallel to the photoconductor, and the charge wire is covered with a shield case. More specifically, the present invention relates to an ozone removal device that exhausts ozone generated from a corona discharger in such an electrophotographic apparatus through a duct using an exhaust fan.
灸来夙挟嵐
電子写真装置では、画像を形成し、それを用紙等に転写
して送り出す過程において、帯電用・転写用・用紙等の
分離用などのコロナ放電器を使用する。ところが、その
コロナ放電器では、オゾンが発生する。そして、このオ
ゾンは、その濃度が高いと感光体に悪影響を及して画像
品質の低下を来す。そこで、従来の電子写真装置では、
ダクトをコロナ放電器の付近に開口させて、排気ファン
により吸引したり、コロナ放電器のシールドケースに複
数の孔を設け、その付近に開口したダクトを通して排気
ファンにより吸引し、オゾンが感光体表面へ流れないよ
うにしたものがあったが、コロナ放電器のシールドケー
スに直接ダクトを直結したものはなかった。In the electrophotographic device, a corona discharger is used for charging, transferring, and separating the paper in the process of forming an image, transferring it to paper, etc., and sending it out. However, the corona discharger generates ozone. When the ozone concentration is high, it has an adverse effect on the photoreceptor, resulting in a decrease in image quality. Therefore, in conventional electrophotographic equipment,
A duct is opened near the corona discharger and an exhaust fan is used to suck the ozone, or multiple holes are provided in the shield case of the corona discharger, and an exhaust fan is used to suck ozone through the duct opened in the vicinity. There were some that were designed to prevent water from flowing into the corona discharger, but there were none that connected the duct directly to the shield case of the corona discharger.
が しようとする
そして、従来のものにおいては、コロナ放電器付近から
各部品間を屈曲させて設けたダクトによりオゾンを排出
するため、空気より重いオゾンを上方に向けて吸引する
部分もあり、又、オゾン以外に相当量の空気を吸引して
１重さによる抵抗が多いため、大型の排気ファンが必要
となったり、大きな駆動力を必要としていた。In the conventional type, ozone is discharged from the vicinity of the corona discharger through a duct bent between each part, so there is also a part that sucks ozone, which is heavier than air, upward. In addition to ozone, a considerable amount of air is sucked in, and there is a lot of resistance due to the weight, so a large exhaust fan is required and a large driving force is required.
そこでこの発明によるオゾン除去装置は、空気より重い
オゾンを上方に向けて吸引したり、空気を吸引したりす
ることなく、オゾンを効率よく吸引して排気し、排気フ
ァンの駆動力が少くて済み、小型化を可能とすることを
目的としている。Therefore, the ozone removal device according to this invention efficiently sucks and exhausts ozone without sucking ozone upwards, which is heavier than air, or sucking air, and requires less driving force from the exhaust fan. , the purpose is to enable miniaturization.
を ゛するための
そのため、請求項１に記載のこの発明は、たとえば以下
の図面に示す実施例のとおり、感光体１１の下側にたと
えば転写チャージャ１５のようなコロナ放電器を配置し
、その感光体１１と平行にチャージャワイヤ３２を掛け
渡すとともに、そのチャージャワイヤ３２をシールドケ
ース３３で被う電子写真装置において、前記コロナ放電
器の下方に排気ファン３４を備えるとともに、その排気
ファン３４と前記シールドケース３３とをダクト３５て
直結してなることを特徴とする。For this reason, the present invention as set forth in claim 1 provides a corona discharger such as a transfer charger 15 disposed below the photoreceptor 11, as shown in the embodiments shown in the following drawings, and In an electrophotographic apparatus in which a charger wire 32 is stretched parallel to the photoreceptor 11 and the charger wire 32 is covered with a shield case 33, an exhaust fan 34 is provided below the corona discharger, and the exhaust fan 34 and the It is characterized by being directly connected to the shield case 33 through a duct 35.
また、請求項２に記載の発明は、請求項１に記載の前記
発明において、たとえば以下の第１図、第２図に示す実
施例のとおり、前記コロナ放電器の長さ方向の一端下方
に前記排気ファン３４を備え、その排気ファン３４に向
けて漸次断面積を増加させて前記コロナ放電器の長さ方
向に前記ダクト３５を設けてなることを特徴とする。Further, the invention according to claim 2 is the invention according to claim 1, in which, for example, as in the embodiments shown in FIGS. It is characterized in that the exhaust fan 34 is provided, and the duct 35 is provided in the longitudinal direction of the corona discharger, the cross-sectional area of which gradually increases toward the exhaust fan 34.
また、請求項３に記載の発明は、請求項１に記載の前記
発明において、たとえば以下の第３図乃至第５図に示す
実施例のとおり、前記コロナ放電器の長さ方向の中央下
方に前記排気ファン３４を備え、その排気ファン３４に
向けて漸？に断面積を減少する前記ダクト３５を設けて
なることを特徴とする。Further, the invention according to claim 3 is the invention according to claim 1, in which, for example, as in the embodiments shown in FIGS. 3 to 5 below, The exhaust fan 34 is provided, and the exhaust fan 34 is gradually moved toward the exhaust fan 34. It is characterized in that the duct 35 is provided to reduce the cross-sectional area.
作−一皿
排気ファン３４により直接コロナ放電器のシールドケー
ス３３からダクト３５内を通して下方へオゾンを排出す
る。Operation - Ozone is directly discharged downward from the shield case 33 of the corona discharger through the duct 35 by the exhaust fan 34.
去−」Ｌ−七一
以下、図面を参照しつつ、この発明の実施例を詳細に説
明する。Embodiments of the present invention will be described in detail below with reference to the drawings.
第６図には、この発明によるオゾン除去装置３０を備え
るレーザプリンタの内部機構の全体概略構成を示す。図
中符号１０で示すものは、プリンタ本体である。プリン
タ本体ｌｏ内には、中央に、ベルト状の感光体１１を設
ける。そして、その感光体１１のまわりには、回転方向
（図中時計方向）に順に、帯電チャージャ１２・レーザ
光学系１３・現像器１４・転写チャージャ１５・クリー
ニング器１６を配置する。このプリンタ本体１０の図中
右側には、用紙１７を収納する給紙トレイ１８を着脱自
在に装填する。そして、その給紙トレイ１８の取付部に
は、給紙ローラ１９や紙ガイド板２０などを有する給紙
部２１を設ける。他方、前述の転写チャージャ１５を挾
んで該給紙部２１と反対の側には、搬送ガイド２２・定
着器２３などを順に並べて配する。また、プリンタ本体
１０の図中上側には、排出する用紙１７を受ける排紙受
け２４を設けてなる。FIG. 6 shows an overall schematic configuration of the internal mechanism of a laser printer equipped with an ozone removal device 30 according to the present invention. The reference numeral 10 in the figure is the main body of the printer. A belt-shaped photoreceptor 11 is provided in the center of the printer main body lo. A charger 12, a laser optical system 13, a developing device 14, a transfer charger 15, and a cleaning device 16 are arranged around the photoreceptor 11 in this order in the rotational direction (clockwise in the figure). A paper feed tray 18 for storing paper 17 is removably loaded on the right side of the printer main body 10 in the figure. A paper feeding section 21 having a paper feeding roller 19, a paper guide plate 20, and the like is provided at the mounting portion of the paper feeding tray 18. On the other hand, on the opposite side of the paper feed section 21 with the aforementioned transfer charger 15 in between, a conveyance guide 22, a fixing device 23, etc. are arranged in this order. Further, on the upper side of the printer main body 10 in the figure, a paper ejection receiver 24 is provided to receive the paper 17 to be ejected.
しかして、いまこのレーザプリンタを用いて電子写真プ
ロセスによる記録を行うときは、給紙ローラ１９を駆動
し、給紙トレイ１８内がら用紙１７を送り出す。そして
、紙ガイド板２０で案内して搬送し、やがて図示しない
レジストセンサで用紙１７の先端を検知する。しかして
、その用紙１７の先端を、レジストローラ２５・２５に
突き当てて止める。When recording by electrophotographic process using this laser printer, the paper feed roller 19 is driven to send out the paper 17 from the paper feed tray 18. Then, the paper 17 is guided and conveyed by the paper guide plate 20, and eventually the leading edge of the paper 17 is detected by a registration sensor (not shown). Then, the leading edge of the paper 17 hits the registration rollers 25 and is stopped.
他方、感光体１１は１図中時計方向に回転しながら帯電
チャージャ１２でその表面を順次−様に帯電し１次のレ
ーザ光学系１３でレーザ光を照射してその表面に静電潜
像を形成し、続いて現像器１４を通るときその静電潜像
をトナーによって逐次可視像化する。そして、その像と
タイミングを合わせ、前述のレジストローラ２５に突き
当てていた用紙１７を感光体１１に向けて送り呂す。し
かして、その感光体１１上の像を転写チャージャ１５に
おいてこの用紙１７に転写する。画像転写後、感光体１
１上に残った残留トナーはクリーニング器１６で掻き落
し、このクリーニング器１６で感光体１１表面上を清掃
する。On the other hand, the surface of the photoreceptor 11 is sequentially charged in a negative manner by the charger 12 while rotating clockwise in FIG. 1, and a laser beam is irradiated by the primary laser optical system 13 to form an electrostatic latent image on the surface. The electrostatic latent image is sequentially visualized by toner when it passes through the developing device 14. Then, in synchronization with the image, the paper 17 that had been in contact with the registration roller 25 described above is fed toward the photoreceptor 11. The image on the photoreceptor 11 is then transferred onto the paper 17 by the transfer charger 15. After image transfer, photoreceptor 1
The residual toner remaining on the photoreceptor 1 is scraped off by a cleaning device 16, and the surface of the photoreceptor 11 is cleaned by the cleaning device 16.
一方、用紙１７は、搬送ガイド２２によって定着器２３
へと送り、転写した像をその定着器２３で熱定着する。On the other hand, the paper 17 is transferred to the fixing device 2 by the conveyance guide 22.
The transferred image is thermally fixed by the fixing device 23.
定着後、用紙１７は、プリンタ本体１０から排出し、排
紙受け２４上に順次スタックする。After fixing, the sheets 17 are discharged from the printer main body 10 and stacked one after another on the sheet discharge tray 24.
ところで、上記のレーザプリンタに備えるこの発明によ
るオゾン除去装置３０は、第１図、第２図に示すように
構成する。前記転写チャージャ１５は感光体１１と平行
に掛け渡したチャージャワイヤ３２と、このチャージャ
ワイヤ３２を被うシールドケース３３とよりなっている
。このシールドケース３３は、上下が開口しており、上
部開口３３ａは感光体１１面に向いている。３４は排気
ファンであり、転写チャージャ１５の長さ方向の一端下
方にプリンタ本体１０の背面側に向けて設ける。そして
シールドケース３３の下部開口３３ｂに上面側で直結し
て連通ずるダクト３５を転写チャージャ１５の長さ方向
における排気ファン３４と反対側の端部から、排気ファ
ン３４に向けて漸次断面積を増加させるように設ける。By the way, the ozone removal device 30 according to the present invention provided in the above-mentioned laser printer is constructed as shown in FIGS. 1 and 2. The transfer charger 15 includes a charger wire 32 extending parallel to the photoreceptor 11 and a shield case 33 covering the charger wire 32. This shield case 33 is open at the top and bottom, and the upper opening 33a faces the surface of the photoreceptor 11. Reference numeral 34 denotes an exhaust fan, which is provided below one longitudinal end of the transfer charger 15 toward the back side of the printer main body 10. Then, a duct 35 that is directly connected to and communicates with the lower opening 33b of the shield case 33 on the upper surface side is transferred.The cross-sectional area is gradually increased from the end opposite to the exhaust fan 34 in the length direction of the charger 15 toward the exhaust fan 34. It is set up so that
なお、シールドケース３３の下部開口３３ｂとダクト３
５間には、気密性を保つためのシール部材３６を取付け
る。Note that the lower opening 33b of the shield case 33 and the duct 3
A sealing member 36 is attached between the holes 5 and 5 to maintain airtightness.
また、オゾン除去装置３０は、第３図、第４図に示すよ
うに構成してもよい。すなわち、排気ファン３４を転写
チャージャ１５の長さ方向の中央下方に設け、シールド
ケース３３の下部開口部３３ｂに上面側で直結して連通
ずるダクト３５を排気ファン３４に向けて漸次断面積が
減少するように設ける。そして、排気ファン３４は、第
４図のように水平方向に向けて排気するようにしても。Further, the ozone removal device 30 may be configured as shown in FIGS. 3 and 4. That is, the exhaust fan 34 is provided below the center in the length direction of the transfer charger 15, and the cross-sectional area of the duct 35, which is directly connected to and communicates with the lower opening 33b of the shield case 33 on the upper surface side, gradually decreases toward the exhaust fan 34. It will be set up so that The exhaust fan 34 may also be arranged to exhaust air in the horizontal direction as shown in FIG.
あるいは、第５図のように下方に向けて排気するように
してもよい。Alternatively, the air may be exhausted downward as shown in FIG.
上記のオゾン除去装置３ｏにおいては、転写チャージャ
１５で発生したオゾンは、比重が空気より大であり、シ
ールドケース３３内からダクト３５内へ沈下する。一方
、排気ファン３４を駆動することによりオゾンは、スト
レートに、そして断面積を吸引効率のよいように変化さ
せて形成したダクト３５内を効率よく排気される。In the ozone removal device 3o described above, the ozone generated in the transfer charger 15 has a higher specific gravity than air, and sinks from the inside of the shield case 33 into the duct 35. On the other hand, by driving the exhaust fan 34, ozone is efficiently exhausted straight through the duct 35 formed by changing the cross-sectional area to improve suction efficiency.
発１４房か股
この発明によるオゾン除去装置は、上記のように構成し
、オゾンを吸引するダクトと排気ファンがオゾンを発生
するコロナ放電器より下方にあり、ダクトがコロナ放電
器のシールドケースに直結しているので空気より重いオ
ゾンを効率よく吸引、排出する。従って排気ファンの駆
動が少くてすみ、小型化が可能となる。The ozone removal device according to the present invention is constructed as described above, and the duct for sucking ozone and the exhaust fan are located below the corona discharger that generates ozone, and the duct is located in the shield case of the corona discharger. Direct connection allows ozone, which is heavier than air, to be efficiently sucked in and discharged. Therefore, the number of drives required for the exhaust fan is reduced, and miniaturization is possible.
第１図はこの発明の一実施例であるオゾン除去装置の斜
視図、第２図はその側面図、第３図は他の実施例の斜視
図、第４図はその断面図、第５図は排気ファンを下方に
向けた場合の断面図、第６図はこの発明が用いられてい
るレーザプリンタの概略構成図である。
１１・・・・・・感光体、１５・・・・・・・転写チャ
ージャ（コロナ放電器）、３０・・・・・ オゾン除去
装置、３２・・・・・・・チャージャワイヤ、３３ ・
・ ・・シールドケース、３４・・・・・・・排気ファ
ン５３５・・・・・・・ダクト。Fig. 1 is a perspective view of an ozone removal device that is an embodiment of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a perspective view of another embodiment, Fig. 4 is a sectional view thereof, and Fig. 5 6 is a cross-sectional view when the exhaust fan is directed downward, and FIG. 6 is a schematic configuration diagram of a laser printer in which the present invention is used. 11... Photoreceptor, 15... Transfer charger (corona discharger), 30... Ozone removal device, 32... Charger wire, 33.
・...Shield case, 34...Exhaust fan 535...Duct.
Claims (1)
と平行にチャージャワイヤを掛け渡すとともに、そのチ
ャージャワイヤをシールドケースで被う電子写真装置に
おいて、前記コロナ放電器の下方に排気ファンを備える
とともに、その排気ファンと前記シールドケースとをダ
クトで直結してなる、電子写真装置のオゾン除去装置。 ２、前記コロナ放電器の長さ方向の一端下方に前記排気
ファンを備え、その排気ファンに向けて漸次断面積を増
加させて前記コロナ放電器の長さ方向に前記ダクトを設
けてなる請求項１に記載の電子写真装置のオゾン除去装
置。 ３、前記コロナ放電器の長さ方向の中央下方に前記排気
ファンを備え、その排気ファンに向けて漸次断面積を減
少する前記ダクトを設けてなる、請求項１に記載の電子
写真装置のオゾン除去装置。[Claims] 1. In an electrophotographic apparatus in which a corona discharger is disposed below a photoreceptor, a charge wire is stretched parallel to the photoreceptor, and the charge wire is covered with a shield case, the corona An ozone removal device for an electrophotographic apparatus, comprising an exhaust fan below a discharger, and a duct directly connecting the exhaust fan to the shield case. 2. The exhaust fan is provided below one end in the length direction of the corona discharger, and the duct is provided in the length direction of the corona discharger with a cross-sectional area gradually increasing toward the exhaust fan. 1. The ozone removal device for an electrophotographic apparatus according to 1. 3. The ozone electrophotographic apparatus according to claim 1, wherein the exhaust fan is provided below the center in the longitudinal direction of the corona discharger, and the duct whose cross-sectional area gradually decreases toward the exhaust fan. removal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2249761A JPH04128775A (en) | 1990-09-19 | 1990-09-19 | Ozone removing device for electrophotographic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2249761A JPH04128775A (en) | 1990-09-19 | 1990-09-19 | Ozone removing device for electrophotographic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04128775A true JPH04128775A (en) | 1992-04-30 |
Family
ID=17197839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2249761A Pending JPH04128775A (en) | 1990-09-19 | 1990-09-19 | Ozone removing device for electrophotographic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04128775A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008089946A (en) * | 2006-10-02 | 2008-04-17 | Ricoh Co Ltd | Toner supply unit, and image forming device using the same |
| JP2008262016A (en) * | 2007-04-12 | 2008-10-30 | Ricoh Co Ltd | Image forming apparatus |
| US7546063B2 (en) | 2004-12-27 | 2009-06-09 | Brother Kogyo Kabushiki Kaisha | Image carrying member cartridge and image forming apparatus |
-
1990
- 1990-09-19 JP JP2249761A patent/JPH04128775A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7546063B2 (en) | 2004-12-27 | 2009-06-09 | Brother Kogyo Kabushiki Kaisha | Image carrying member cartridge and image forming apparatus |
| JP2008089946A (en) * | 2006-10-02 | 2008-04-17 | Ricoh Co Ltd | Toner supply unit, and image forming device using the same |
| JP2008262016A (en) * | 2007-04-12 | 2008-10-30 | Ricoh Co Ltd | Image forming apparatus |
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