JPH0128513Y2 - - Google Patents
Info
- Publication number
- JPH0128513Y2 JPH0128513Y2 JP1982173178U JP17317882U JPH0128513Y2 JP H0128513 Y2 JPH0128513 Y2 JP H0128513Y2 JP 1982173178 U JP1982173178 U JP 1982173178U JP 17317882 U JP17317882 U JP 17317882U JP H0128513 Y2 JPH0128513 Y2 JP H0128513Y2
- Authority
- JP
- Japan
- Prior art keywords
- corona discharge
- discharge device
- ozone
- opening
- shield member
- 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.)
- Expired
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 21
- 108091008695 photoreceptors Proteins 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は電子写真複写機のコロナ放電装置に関
し、さらに詳細には、オゾンを効率よく、機外に
排出するコロナ放電装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a corona discharge device for an electrophotographic copying machine, and more particularly to a corona discharge device for efficiently discharging ozone to the outside of the machine.
従来、電子写真複写機のコロナ放電装置は、そ
の使用目的から正極放電、負極放電、交流放電の
三種類が用いられている。これらのコロナ放電装
置のうち、負極放電、交流放電においては、コロ
ナ放電が空気中で行なわれるため、放電場で加速
された荷電粒子と酸素分子の非弾性衝突によつて
生じる酸素の活性粒子と酸素分子との反応によ
り、オゾンが生成されることが一般に知られてい
る。このオゾンは、感光体を劣化させるため、複
写機に排気フアンを設け、オゾンを機外に排出さ
せる機構等が提案されている。感光体に対し、コ
ロナ放電装置の放電開口部が下方になるよう位置
付けられているものに関しては、オゾンが発生し
ても、オゾンが空気より重いため、又、感光体の
回転により発生する空気流によりコロナ放電装置
内に蓄積されることはないが、放電開口部が上方
に向けてある場合、オゾンは、そのコロナ放電装
置のシールド内に蓄積される。このような装置で
は、前述した排気フアンの効果はほとんどなく、
シールド内に蓄積されたオゾンは、排気されない
まま、感光体の劣化を促進する。特に、この状態
のままで複写機の電源をOFFとしてしまうと、
排気フアンは停止し、そのコロナ放電装置の面し
ている感光体の部分だけが劣化してしまうため、
再び電源ONとし、複写を行なつた時、感光体の
前記コロナ放電装置に対面していた部分の画像が
悪化する。 Conventionally, three types of corona discharge devices have been used for electrophotographic copying machines, depending on the purpose of use: positive electrode discharge, negative electrode discharge, and alternating current discharge. Among these corona discharge devices, in negative electrode discharge and AC discharge, corona discharge is performed in the air, so active particles of oxygen generated by inelastic collisions between charged particles accelerated in the discharge field and oxygen molecules and It is generally known that ozone is produced by reaction with oxygen molecules. Since this ozone deteriorates the photoreceptor, a mechanism has been proposed in which a copying machine is provided with an exhaust fan and the ozone is discharged to the outside of the machine. If the discharge opening of the corona discharge device is positioned downward with respect to the photoreceptor, even if ozone is generated, ozone is heavier than air, and the air flow generated by the rotation of the photoreceptor is If the discharge opening is directed upwards, ozone will accumulate in the shield of the corona discharge device. In such devices, the exhaust fan described above has little effect;
Ozone accumulated within the shield accelerates deterioration of the photoreceptor without being exhausted. Especially if you turn off the copier in this state,
The exhaust fan stops, and only the part of the photoreceptor facing the corona discharge device deteriorates.
When the power is turned on again and copying is performed, the image on the portion of the photoreceptor facing the corona discharge device deteriorates.
本考案の目的は、上述したようなオゾンの蓄積
を防止し複写機の電源がOFF状態となつても、
オゾンを排出できるコロナ放電装置を提供するに
ある。 The purpose of this invention is to prevent ozone from accumulating as described above, and to prevent ozone from accumulating even when the copier is turned off.
An object of the present invention is to provide a corona discharge device capable of discharging ozone.
即ち、本考案は、チヤージヤーワイヤとシール
ド部材から成る複写機のコロナ放電装置におい
て、該シールド部材の一部に開口を設け、該開口
を覆うようにして、該コロナ放電装置の背面に設
けられたダクトを介して、複写機の機体の底板に
設けられた開口に接続したことを特徴とする複写
機のコロナ放電装置を提供するものである。 That is, the present invention provides a corona discharge device for a copying machine comprising a charger wire and a shield member, in which an opening is provided in a part of the shield member, and the shield member is provided on the back side of the corona discharge device so as to cover the opening. The present invention provides a corona discharge device for a copying machine, which is connected to an opening provided in a bottom plate of a body of the copying machine through a duct provided therein.
本考案を図面を参照しながら詳述する。 The present invention will be explained in detail with reference to the drawings.
第１図は本考案のコロナ放電装置を転写用とし
て用いた複写機の概略装置図である。感光層とし
てcdsを用いた感光体１の周辺には、主帯電用コ
ロナ放電装置（負帯電）２、光学系３、現像装置
４、転写用コロナ放電装置（負帯電）５、転写紙
分離装置６、除電用コロナ放電装置（交流帯電）
７、クリーニング装置８が順次設けられている。 FIG. 1 is a schematic diagram of a copying machine using the corona discharge device of the present invention for transfer. Around the photoreceptor 1 using CDS as a photosensitive layer, there are a main charging corona discharge device (negative charging) 2, an optical system 3, a developing device 4, a transfer corona discharge device (negative charging) 5, and a transfer paper separation device. 6. Corona discharge device for static elimination (AC charging)
7. Cleaning devices 8 are sequentially provided.
さらに、第２図に示すように、本考案のコロナ
放電装置５はチヤージヤーワイヤ１０と、シール
ド部材１１から成つており、シールド部材１１の
放電開口は転写紙９へ感光体１上に形成されたト
ナー像を転写するよう、感光体１に面して設けら
れている。 Furthermore, as shown in FIG. 2, the corona discharge device 5 of the present invention consists of a charger wire 10 and a shield member 11, and the discharge opening of the shield member 11 is formed on the photoreceptor 1 onto the transfer paper 9. The photoreceptor 1 is provided facing the photoreceptor 1 so as to transfer the toner image.
シールド部材１１の底板１１′には、コロナ放
電装置５の長手方向に対し、平行に開口Ａが形成
されている。また、コロナ放電装置５の鉛直下の
複写機機体１２には、開口Ａと平行して、開口Ｂ
が形成されている。さらに、開口Ａと開口Ｂ間に
はダクト１３を設け、両開口を接続している。 An opening A is formed in the bottom plate 11' of the shield member 11 in parallel to the longitudinal direction of the corona discharge device 5. Further, in the copying machine body 12 vertically below the corona discharge device 5, an opening B is provided in parallel with the opening A.
is formed. Further, a duct 13 is provided between the opening A and the opening B to connect both openings.
上述した実施例においては、主帯電コロナ放電
装置２、転写用コロナ放電装置５、除電用コロナ
放電装置７からのオゾンの発生が考えられるが、
前述したように、配置的に主帯電、又は除電用コ
ロナ放電装置２，７においてはオゾンした蓄積は
なく、転写用コロナ放電装置５のみオゾンの蓄積
が考えられる。 In the above-described embodiment, ozone is thought to be generated from the main charging corona discharge device 2, the transfer corona discharge device 5, and the static elimination corona discharge device 7.
As mentioned above, there is no accumulation of ozone in the main charging or charge eliminating corona discharge devices 2 and 7, and it is thought that ozone accumulates only in the transfer corona discharge device 5.
本考案の構成により、転写用コロナ放電装置の
内部に蓄積したオゾンは、矢印で示すようにシー
ルド部材１１の開口Ａを通過し、ダクト１３によ
り、機体１２の開口Ｂへと有効的に誘導され機外
へ排出される。このオゾンの流れは、オゾン自体
の密度が空気密度よりも大きいことにより行なわ
れるため、複写機の作動とはまつたく無関係に行
なわれる。つまり、複写機の電源がOFFとなつ
た状態においても、オゾンは機外に排出され、オ
ゾンの蓄積を防止することができる。 With the configuration of the present invention, ozone accumulated inside the transfer corona discharge device passes through the opening A of the shield member 11 as shown by the arrow, and is effectively guided to the opening B of the body 12 by the duct 13. It is ejected from the aircraft. This flow of ozone is caused by the fact that the density of ozone itself is greater than the density of air, and therefore occurs completely independently of the operation of the copying machine. In other words, even when the copying machine is turned off, ozone is discharged outside the machine, and ozone accumulation can be prevented.
さらに、本考案の他の実施例として第３図に示
すように、複写機９を感光体１より分離するため
の転写紙分離用コロナ放電装置１４においても一
般に交流放電を行なうことにより、オゾンが発生
するため、本考案の構成を対応させることができ
る。 Furthermore, as shown in FIG. 3 as another embodiment of the present invention, ozone is generated by generally performing alternating current discharge in a corona discharge device 14 for separating the copying paper from the photoreceptor 1. Since this occurs, the configuration of the present invention can be adapted to this.
この場合、一般に転写用コロナ放電装置５に隣
接して設置されるため、ダクト１３を第３図に示
すように、２つのコロナ放電装置５，１４を囲む
ように設けることができる。 In this case, since it is generally installed adjacent to the transfer corona discharge device 5, the duct 13 can be provided so as to surround the two corona discharge devices 5 and 14, as shown in FIG.
また、場合によつてはダクト１３をコロナ放電
装置のシールド部材と一体化して設けることも可
能である。 Further, in some cases, the duct 13 may be provided integrally with the shield member of the corona discharge device.
このように本考案は極めて簡単な構成により、
オゾンの蓄積を防止するとともに効果的に機外に
排出することができる。 In this way, the present invention has an extremely simple configuration, and
This prevents ozone from accumulating and allows it to be effectively discharged outside the machine.
第１図は、本考案のコロナ放電装置を用いた複
写機の簡略配置図であり、第２図は、本考案のコ
ロナ放電装置の断面図であり、第３図は、本考案
の他の実施例を示す断面図である。
５……コロナ放電装置、１０……チヤージヤー
ワイヤ、１１……シールド部材、１２……機体、
１３……ダクト、Ａ，Ｂ……開口。
FIG. 1 is a simplified layout diagram of a copying machine using the corona discharge device of the present invention, FIG. 2 is a sectional view of the corona discharge device of the present invention, and FIG. It is a sectional view showing an example. 5... Corona discharge device, 10... Charger wire, 11... Shield member, 12... Airframe,
13...Duct, A, B...Opening.
Claims (1)
写機のコロナ放電装置において、該シールド部材
の一部に開口を設け、該開口を覆うようにして該
コロナ放電装置の背面に設けられたダクトを介し
て複写機の機体の底板に設けられた開口に接続し
たことを特徴とする複写機のコロナ放電装置。 In a corona discharge device for a copying machine consisting of a charge wire and a shield member, an opening is provided in a part of the shield member, and copying is carried out through a duct provided on the back of the corona discharge device so as to cover the opening. A corona discharge device for a copying machine, characterized in that it is connected to an opening provided in the bottom plate of the machine body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17317882U JPS5977149U (en) | 1982-11-15 | 1982-11-15 | Copy machine corona discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17317882U JPS5977149U (en) | 1982-11-15 | 1982-11-15 | Copy machine corona discharge device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5977149U JPS5977149U (en) | 1984-05-25 |
| JPH0128513Y2 true JPH0128513Y2 (en) | 1989-08-30 |
Family
ID=30377320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17317882U Granted JPS5977149U (en) | 1982-11-15 | 1982-11-15 | Copy machine corona discharge device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5977149U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2661055B2 (en) * | 1987-08-21 | 1997-10-08 | ミノルタ株式会社 | Corona discharge transfer device for electrophotography |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5474540U (en) * | 1977-11-04 | 1979-05-26 |
-
1982
- 1982-11-15 JP JP17317882U patent/JPS5977149U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5977149U (en) | 1984-05-25 |
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