JPS6152471B2 - - Google Patents
Info
- Publication number
- JPS6152471B2 JPS6152471B2 JP53057529A JP5752978A JPS6152471B2 JP S6152471 B2 JPS6152471 B2 JP S6152471B2 JP 53057529 A JP53057529 A JP 53057529A JP 5752978 A JP5752978 A JP 5752978A JP S6152471 B2 JPS6152471 B2 JP S6152471B2
- Authority
- JP
- Japan
- Prior art keywords
- developer
- toner
- electrode
- cleaning
- pump
- 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
- 238000004140 cleaning Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 22
- 108091008695 photoreceptors Proteins 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Wet Developing In Electrophotography (AREA)
Description
【発明の詳細な説明】
本発明は、湿式現像転写方式の電子写真装置に
おけるクリーニング部への給液装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid supply device to a cleaning section in a wet development transfer type electrophotographic apparatus.
湿式現像転写方式の電子写真装置に於ては、転
写後の残留トナーを排除する手段として、現像部
から現像液をクリーニング部へ供給し、この液に
よつて残留トナーを溶解し除去することが行われ
ている。 In an electrophotographic device using a wet development transfer method, as a means to eliminate residual toner after transfer, a developer is supplied from a developing section to a cleaning section, and the residual toner is dissolved and removed by this solution. It is being done.
ところが、例えばブレードクリーニング法を用
いた場合では、ブレードによつて掻き落とされる
時にドラムを伝つて流れ落ちたり、ブレード裏面
へ回り込んだりした現像液がやがて乾燥すると、
あとに残つたトナーが飛散して転写紙や装置を汚
染することになり、また、装置の停止によつて掻
き集められたまま残された現像液は、溶剤の蒸発
によつて感光体上にトナー凝固を作り出し、これ
が感光体やブレードを損傷する事態を誘起してい
た。 However, when the blade cleaning method is used, for example, when the developer that is scraped off by the blade runs down the drum or wraps around the back of the blade, it eventually dries.
The toner left behind will scatter and contaminate the transfer paper and the device, and the developer left behind after being scraped up when the device is stopped will cause the toner to be deposited on the photoreceptor as the solvent evaporates. This caused coagulation, which caused damage to the photoreceptor and blade.
本発明は、トナーを可及的に除去した現像液を
クリーニング部に供給し、もつて上記の欠点を排
除することを目的としたものである。 The present invention aims to eliminate the above-mentioned drawbacks by supplying a developer from which toner has been removed as much as possible to a cleaning section.
以下、本発明の詳細を図面に基づいて説明す
る。 Hereinafter, the details of the present invention will be explained based on the drawings.
第１図において、１は感光体、２は液体現像
槽、３はモーター７によつて駆動されるポンプ
で、現像液の一部を感光体表面のクリーニング部
と、現像電極５へ供給するものである。４はトナ
ーの極性と同じ極性の電圧が印加されたメツシユ
状の電極で、ポンプ３内のクリーニング液供給管
６への吐出部分に設けられている。 In FIG. 1, 1 is a photoconductor, 2 is a liquid developer tank, and 3 is a pump driven by a motor 7, which supplies a portion of the developer to a cleaning section on the surface of the photoconductor and a developing electrode 5. It is. Reference numeral 4 denotes a mesh-shaped electrode to which a voltage of the same polarity as the toner is applied, and is provided at a discharge portion of the pump 3 to the cleaning liquid supply pipe 6.
なお、１１は除電器、１２帯電悪、１３は露光
部、１４はスクイズローラ、１５は転写帯電器、
１６は除電器、１７はクリーニングローラ、１８
はクリーニングブレードで、これらは電子写真の
プロセスの順に配列されている。 In addition, 11 is a static eliminator, 12 is a charging device, 13 is an exposure section, 14 is a squeeze roller, 15 is a transfer charger,
16 is a static eliminator, 17 is a cleaning roller, 18
are cleaning blades, which are arranged in the order of the electrophotographic process.
次に、この作用を説明すると、クリーニング液
供給管６の入口に設けられたメツシユ状の電極４
には、上記したようにトナーの極性と同一極性の
電圧が印加されているから、ポンプ３から供給管
６に向けて吐出する現像液中のトナーは、ここで
反撥されて通過が阻止される。このため、供給管
６へ流入する液はほとんど溶剤だけとなり、クリ
ーニング部ではこの溶剤のみによつて残留トナー
を溶かして排除することとなる。他方、供給管６
への流入が阻止されたトナーはポンプ３内で濃縮
され、より濃度の高い現像液となつて現像電極５
へ送られ感光体１上の潜像を顕像化する。 Next, to explain this effect, the mesh-shaped electrode 4 provided at the inlet of the cleaning liquid supply pipe 6
As described above, since a voltage having the same polarity as the toner is applied to the toner, the toner in the developer discharged from the pump 3 toward the supply pipe 6 is repelled here and is prevented from passing through. . Therefore, almost all the liquid flowing into the supply pipe 6 is the solvent, and in the cleaning section, the residual toner is dissolved and removed only by this solvent. On the other hand, the supply pipe 6
The toner that is blocked from flowing into the pump 3 is concentrated in the pump 3, becomes a more concentrated developer, and is transferred to the developing electrode 5.
The latent image on the photoreceptor 1 is visualized.
第２図に示した実施例では、現像槽２内にメツ
シユ状電極４の仕切りを設け、この電極４を隔て
て一方の槽２ａにはクリーニング部への給液用ポ
ンプ３ａを、他方の槽２ｂには現像電極への給液
用ポンプ３ｂを設けたものである。さらに、クリ
ーニング部への給液用ポンプ３ａの別の吐出口に
は、電磁弁９を介して現像電極５へ通じる給液管
８が設けられている。 In the embodiment shown in FIG. 2, a mesh-like electrode 4 is provided in the developing tank 2, and a pump 3a for supplying liquid to the cleaning section is connected to one tank 2a with the electrode 4 in between, and a pump 3a for supplying liquid to the cleaning section is connected to the other tank 2a. 2b is provided with a pump 3b for supplying liquid to the developing electrode. Furthermore, a liquid supply pipe 8 communicating with the developing electrode 5 via an electromagnetic valve 9 is provided at another discharge port of the liquid supply pump 3a to the cleaning section.
しかして、この実施例によれば、クリーニング
部への給液ポンプ３ａの作動により、槽２ｂより
槽２ａ内へ現像液が流入してくるが、前述したよ
うに、両槽間にはトナーの極性と同一極性の電圧
が印加されたメツシユ状電極４があるため、現像
液中のトナーはこの電極４で阻止されて槽２ａ内
には溶剤だけが流入してくる。したがつて、クリ
ーニング部への給液を続けるにつれて現像液のト
ナー濃度は低くなり、やがて溶剤のみとなる。他
方、メツシユ状電極４により槽２ｂ内の現像液の
トナー濃度は高くなるから、現像電極５にはポン
プ３ｂにより高い濃度の現像液が送られて現像が
より確実に行われる。また、クリーニング部への
給液用ポンプ３ａの他の吐出口に連なる給液管８
の電磁弁９は通常閉じられているが、現像時以外
にこの弁９を開放してポンプ３ａを働かせること
により現像電極５に薄い現像液を供給して電極皿
を洗滌するようにしてある。 According to this embodiment, the developer flows into the tank 2a from the tank 2b due to the operation of the liquid supply pump 3a to the cleaning section, but as described above, there is no toner between the two tanks. Since there is a mesh electrode 4 to which a voltage of the same polarity is applied, the toner in the developer is blocked by this electrode 4, and only the solvent flows into the tank 2a. Therefore, as the liquid continues to be supplied to the cleaning section, the toner concentration of the developer decreases until it becomes only a solvent. On the other hand, since the mesh-like electrode 4 increases the toner concentration of the developer in the tank 2b, the pump 3b sends a high-concentration developer to the developing electrode 5, thereby ensuring more reliable development. Also, a liquid supply pipe 8 connected to another discharge port of the liquid supply pump 3a to the cleaning section
The solenoid valve 9 is normally closed, but by opening the valve 9 and operating the pump 3a at times other than during development, a thin developer solution is supplied to the development electrode 5 and the electrode plate is washed.
以上述べた如く、本発明によれば、現像部から
クリーニング部へ液を供給する装置の給液側に、
トナーの極性と同じ極性の電圧が印加された通液
性の電極を配したので、現像液中のトナーはこの
電極により通過が阻まれ、クリーニング部に供給
される液は溶剤だけか、あるいはきわめて濃度の
低い現像液となる。このため、クリーニング部に
おいて残留現像液を溶解して除去する機能は一段
と向上するばかりでなく、例えこの液が感光体ド
ラム等を伝つて流れ落ちたり、周辺の機器に付着
したとしても、液中の含有トナーがきわめて少い
ため、トナー飛散による転写紙あるいは装置の汚
染は生じない。また装置の停止によつて掻き集め
られたままの液が感光体上に残つても、トナー凝
固を作り出す怖れがないから、これによる感光体
あるいはブレードの損傷といつた事態は発生しな
い。さらに、電極によつてトナーの通過が阻まれ
る部分では高いトナー濃度を有する現像液が得ら
れるから、これを現像電極に導びくことにより、
現像作業は一段と確実性を増して高品質のコピー
画像が得られる等優れた効果を奏するものであ
る。 As described above, according to the present invention, on the liquid supply side of the device that supplies liquid from the developing section to the cleaning section,
Since a liquid-permeable electrode to which a voltage of the same polarity as the toner is applied is installed, the toner in the developer is blocked from passing through the electrode, and the liquid supplied to the cleaning section is either only the solvent or very little. This results in a developer solution with low concentration. This not only further improves the ability of the cleaning section to dissolve and remove residual developer, but even if this fluid flows down the photoreceptor drum or adheres to peripheral equipment, Since the amount of toner contained is extremely small, there is no contamination of the transfer paper or device due to toner scattering. Furthermore, even if the liquid scraped up remains on the photoreceptor when the apparatus is stopped, there is no risk of toner coagulation, and this will not cause damage to the photoreceptor or blade. Furthermore, since a developer having a high toner concentration can be obtained in areas where the passage of toner is blocked by the electrode, by guiding this to the development electrode,
The development work is more reliable and provides superior effects such as high quality copy images.
第１図は本発明の一実施例をなすクリーニング
液供給装置を備えた湿式現像転写方式の電子写真
装置の概要図、第２図は他の実施例を示す概要図
である。
３…ポンプ、４…メツシユ状の電極、５…現像
電極、６…クリーニング液供給管、９…電磁弁。
FIG. 1 is a schematic diagram of a wet development transfer type electrophotographic apparatus equipped with a cleaning liquid supply device according to one embodiment of the present invention, and FIG. 2 is a schematic diagram showing another embodiment. 3...Pump, 4...Mesh-shaped electrode, 5...Developing electrode, 6...Cleaning liquid supply pipe, 9...Solenoid valve.
Claims (1)
現像部よりクリーニング部へ現像液を供給する装
置の給液側に、上記現像液のトナーの極性と同一
極性の電圧を印加した通液性電極を備えたことを
特徴とするクリーニング液供給装置。1 In a wet development transfer type electrophotographic device,
A cleaning liquid supply device, comprising: a liquid-permeable electrode to which a voltage having the same polarity as the toner polarity of the developer is applied, on the liquid supply side of the device that supplies the developer from the development section to the cleaning section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5752978A JPS54149638A (en) | 1978-05-17 | 1978-05-17 | Cleaning liquid supplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5752978A JPS54149638A (en) | 1978-05-17 | 1978-05-17 | Cleaning liquid supplier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54149638A JPS54149638A (en) | 1979-11-24 |
| JPS6152471B2 true JPS6152471B2 (en) | 1986-11-13 |
Family
ID=13058261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5752978A Granted JPS54149638A (en) | 1978-05-17 | 1978-05-17 | Cleaning liquid supplier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54149638A (en) |
-
1978
- 1978-05-17 JP JP5752978A patent/JPS54149638A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54149638A (en) | 1979-11-24 |
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