JPS5950472A - Wet developing device - Google Patents
Wet developing deviceInfo
- Publication number
- JPS5950472A JPS5950472A JP16137982A JP16137982A JPS5950472A JP S5950472 A JPS5950472 A JP S5950472A JP 16137982 A JP16137982 A JP 16137982A JP 16137982 A JP16137982 A JP 16137982A JP S5950472 A JPS5950472 A JP S5950472A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- limit position
- toner
- toner supply
- upper limit
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
- G03G15/104—Preparing, mixing, transporting or dispensing developer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing For Electrophotography (AREA)
- Wet Developing In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、トナーの補給側倒に％徴を有する湿式電子写
真装置における現像装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a developing device in a wet type electrophotographic apparatus having a percentage characteristic on the side of toner replenishment.
近年の複写機には、鮮明さいが−に濃度の高い画像形成
が要求されており、この要請に対しては高濃度の現像液
を使用することが一つの手段となっている。Copying machines in recent years are required to form images with high clarity and high density, and one way to meet this demand is to use a high density developer.
ところで、この現像液は一般に有機溶剤とトナーとによ
って構成されており、溶剤は、記録紙の大きさと記録す
べき画像の量（記録すべき平均画像密度×画像面Ｐ！ｔ
ｌに比例して消費され、トナーは画像の１に比例して消
費される。他方、溶剤中のトナー量はトナー濃度センサ
ーにより常時チェックされていて、溶剤中の混合割合い
が減少した場合には、センサーの出力により随時溶剤と
の混合液としてトナーを補給するよう圧制御されている
。このため、例えば記録紙上に記録すべき画像の量が多
い場合には、溶剤の消費量に対してトナーの消費量が相
対的に増加する結果、上述した要請に応えるべくトナー
の補給量を増やした場合には、これに伴って補給される
溶剤の量がその消費量を上回ることになって、遂には現
像槽から現像液が溢れ出すといった事態を惹き起す。By the way, this developer is generally composed of an organic solvent and a toner, and the solvent is determined by the size of the recording paper and the amount of the image to be recorded (average image density to be recorded x image surface P!t)
Toner is consumed in proportion to 1 of the image. On the other hand, the amount of toner in the solvent is constantly checked by a toner concentration sensor, and if the mixing ratio in the solvent decreases, pressure is controlled to replenish the toner as a mixture with the solvent at any time based on the output of the sensor. ing. For this reason, for example, when the amount of images to be recorded on recording paper is large, the amount of toner consumed increases relative to the amount of solvent consumed, and as a result, the amount of toner supplied must be increased to meet the above-mentioned request. In this case, the amount of solvent replenished will exceed the amount consumed, eventually causing a situation in which the developer overflows from the developer tank.
本発明はかかる問題に鑑み、現像液量との関連において
トナーの補給動作を制御し、もって現像ｉのオーバーフ
ローを未然に阻止することのできる改良された現像装置
を提供することを目的とするものであり、以下に本発明
の詳細を図示した実施例に基づいて説明する。In view of this problem, it is an object of the present invention to provide an improved developing device that can control the toner replenishment operation in relation to the amount of developer and thereby prevent the overflow of developer i. The details of the present invention will be explained below based on illustrated embodiments.
図面は、本発明の一実施例を示すものであって、図中符
号１，２は、現像槽１３の上部と下部に配設ｌ−た現像
液の」二限位置検出器と下限位１に検出器で、これらの
各出力端は、後述する第１．第２のリレー６・ ４の駆
動線輪に括続している。これらの各リレー５．４（ｒｌ
、動作制御回路１２とソレノイド駆動回１ｉ！３８を結
ぶライン知直列に設けられ、常時ラインを閉成するよう
にそれぞすＬの接点ａ接続している。第１のリレー３＋
−１、上記した上限位置検出器１が現像液を検出してハ
イレベルとなったとき接点ａからｂに切換わって、ソレ
ノイド駆動回路８を不作動ｒするとともに現像液の満タ
ン状態表示用のランプ５を点灯させ、１だ、第２のリレ
ー５は、上記した下限位置検出器２が」保液を検出しな
くなったとき、接点ａからｂに切換わって、動作制御回
路ＶＣＰｆｉ写動作を停止させる回路を閉成する表置時
に、現ｆ象液の不足を表示するランプ６を点灯−するよ
うに作動する。７け、例えば発光素子と受光素イから々
る現像液濃度検出器で、その出力端は、ルノイド駆ｉｉ
、１７回路８に接続し、この検出信号は駆動回路８に入
力する設定信号と比較された上、トナー濃度が設定（ｉ
ｆｆを下回った際はここからの出力信号によりソレノイ
ド９を作動してトナータンク１０の弁１１を開放するよ
うに作動する。なお図中符号１４け感光体ドラムを示し
ている。The drawing shows an embodiment of the present invention, and reference numerals 1 and 2 in the drawing indicate developer solution limit position detectors and lower limit position detectors disposed at the upper and lower parts of the developer tank 13. Each of these output terminals is connected to a first detector, which will be described later. It is connected to the drive line wheels of the second relays 6 and 4. Each of these relays 5.4 (rl
, the operation control circuit 12 and the solenoid drive circuit 1i! The line connecting the lines 38 and 38 is provided in series, and the contact a of each L is connected so as to always close the line. 1st relay 3+
-1. When the above-mentioned upper limit position detector 1 detects the developer and becomes high level, it switches from contact a to b, deactivates the solenoid drive circuit 8, and displays the full state of the developer. When the above-mentioned lower limit position detector 2 no longer detects liquid retention, the second relay 5 switches from contact a to b, and the operation control circuit VCPfi operates. When the circuit for stopping the liquid is closed, the lamp 6 is turned on to indicate the lack of liquid. 7, for example, a developer concentration detector consisting of a light-emitting element and a light-receiving element;
, 17 is connected to the circuit 8, and this detection signal is compared with the setting signal input to the drive circuit 8, and the toner density is set (i
When the value falls below ff, the output signal from this operates the solenoid 9 to open the valve 11 of the toner tank 10. Note that 14 photosensitive drums are shown in the figure.
つぎに上記した装置の作動について説明する。Next, the operation of the above device will be explained.
現像槽１６内に正常な量の現像液が貯留さね、ている場
合には、上限位置検出器１は現像液を検出せず、寸だ下
限位置検出器２け現像液を検出しているため、ともにロ
ーレベルを示し、このため第１、第２のリレー３，４は
それぞれ接点ａと接続して、動作制御回路１２とソレノ
イド駆動回路８間のラインを閉成している。しだがって
、現像液濃度検出器７の出力信号に応じてトナーの補給
動作は支障なく行われ、これによって」保液は所定の濃
度を維持する。When a normal amount of developer is stored in the developer tank 16, the upper limit position detector 1 does not detect the developer, and the lower limit position detector 2 detects the developer. Therefore, both of them show a low level, and therefore, the first and second relays 3 and 4 are connected to the contact a, respectively, and the line between the operation control circuit 12 and the solenoid drive circuit 8 is closed. Therefore, the toner replenishment operation is carried out without any problem in accordance with the output signal of the developer concentration detector 7, and as a result, the retained liquid maintains a predetermined concentration.
このような状態から画像量の多い複写を連続して行った
ような場合、トナーの消費量の増加に伴ってその補給が
頻繁に行われることになるが、これと同時に現像４１＃
１３内には、多量の溶剤が供給されるため、これが溶剤
の消費量を上回ってし１うと、徐々に現像槽１３内の現
像液は上昇し、ついには上限に達してしまう。この状態
は上限位置検出器１によって直ちに検出さり、、そのハ
イレベルの信号によｌ’）、ｇｌのリレー３は接、ｄａ
がら接点１）へ切換わる。〜これによりランプ５は点ｆ
ｆ１Ｌで現像液の満タン状態を表示し、また、ソレノイ
ド駆ｉ助回路８ｖよ不作動状態となって、現像液濃度検
出器７の検出信号如何にかかわらずトナーの補給を停止
し、現像液のこれ以上の増加を抑える。なお、この状態
から現像操作が進んで現像液が減少してくると、上限位
置検出器７は再び現像液を検出しない状態となるから、
第１のリレー３は接点ａ側に復帰してソレノイド駆動回
路８を動作可能な状態に戻し、以後は上述した動作によ
り必要号のトナーの補給態勢に入る。If copies with a large amount of images are made continuously in such a state, toner will be replenished frequently as the amount of toner consumed increases.
Since a large amount of solvent is supplied into developer tank 13, if this exceeds the amount of solvent consumed, the developer in developer tank 13 gradually rises and finally reaches its upper limit. This state is immediately detected by the upper limit position detector 1, and its high level signal causes the gl relay 3 to close and da
switch to contact 1). ~This causes lamp 5 to move to point f
f1L indicates the full state of the developer, and the solenoid drive i auxiliary circuit 8v becomes inactive, stopping toner replenishment regardless of the detection signal of the developer concentration detector 7, and discharging the developer. to suppress any further increase in Note that as the developing operation progresses from this state and the amount of developer decreases, the upper limit position detector 7 will again be in a state where it does not detect the developer.
The first relay 3 returns to the contact point a side, returning the solenoid drive circuit 8 to an operable state, and thereafter enters the necessary toner replenishment mode by the above-described operation.
他方、長期の使用によって現像液が不足してくると、−
Ｆ限位置検出器２は現像液を検出し得ない状態をなして
ハイレベルの信号を出方し、第２のリレー４を接点す側
に切換えて複写動作を停止させ、同時にランプ６を点燈
して現像液の不足状態をパネル面等に表示する。On the other hand, if the developer becomes insufficient due to long-term use, -
The F limit position detector 2 is in a state where it cannot detect the developer and outputs a high level signal, switches the second relay 4 to the contact side, stops the copying operation, and at the same time turns on the lamp 6. Lights up to display the developer shortage status on the panel surface, etc.
なお、上述した実施例では、満タン時からトナー補給体
制への復帰を上限位置検出器１によって決めているが、
満タン時からの複写枚数によって復帰タイミングを決定
するようにすることもできる。In the embodiment described above, the return to the toner replenishment system from when the tank is full is determined by the upper limit position detector 1.
The return timing may also be determined based on the number of copies made since the tank was full.
以上述べたように本発明によれば、現像液の上限位置検
出手段によってトナーの補給動作を不能上なすよう構成
したので、多量のトナー補給を必υとする高い濃度の画
像形成を可能とする現像装置にあっても、トナーの補給
て伴なって供給される溶剤により現像液がオーバーフロ
ーするといった事態を防ぐことが可能となり、装置内部
の汚染等を未然に阻止することができる。As described above, according to the present invention, since the toner replenishment operation is disabled by the upper limit position detection means of the developer, it is possible to form a high-density image that requires a large amount of toner replenishment. Even in the developing device, it is possible to prevent the developing solution from overflowing due to the solvent supplied along with toner replenishment, and it is possible to prevent contamination inside the device.
図面は、本発明の一実施例を示す装置の構成図である。 The drawing is a configuration diagram of an apparatus showing an embodiment of the present invention.
Claims (1)
ー供給手段を備えだ湿式現像装置において、上記装置に
現像液が規定４以上になったことを検出する検出手段を
設けるとともに、該検出手段の検出々力によ１つ上記ト
ナー供給手段を不作動−にする手段を設けたことを特徴
とする湿式現像装置鮮。In a wet type developing device, which is equipped with a toner supply means that operates based on the detection force of the toner concentration detection means, the device is provided with a detection means for detecting that the developer has reached a specified level 4 or higher, and the detection means A wet type developing device characterized in that a means for disabling one of the toner supply means according to a detection force is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16137982A JPS5950472A (en) | 1982-09-16 | 1982-09-16 | Wet developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16137982A JPS5950472A (en) | 1982-09-16 | 1982-09-16 | Wet developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5950472A true JPS5950472A (en) | 1984-03-23 |
Family
ID=15733967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16137982A Pending JPS5950472A (en) | 1982-09-16 | 1982-09-16 | Wet developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5950472A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0923007A2 (en) * | 1997-12-12 | 1999-06-16 | Samsung Electronics Co., Ltd. | Developer supply method for a wet electrographic printer |
| EP0923006A2 (en) * | 1997-12-12 | 1999-06-16 | Samsung Electronics Co., Ltd. | Developer supply method for a wet electrographic printer |
| EP1014048A2 (en) * | 1998-12-17 | 2000-06-28 | Samsung Electronics Co. Ltd. | Apparatus for indicating level of liquid in tank |
| DE102010008241A1 (en) * | 2010-02-17 | 2011-08-18 | Océ Printing Systems GmbH, 85586 | Device for development of charge images in electrographic printing apparatus, has cleaning unit arranged in intake region of liquid developer exhibiting chamber, which is made to clean residual liquid developer of developer roll |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50120634A (en) * | 1974-03-07 | 1975-09-22 | ||
| JPS58111069A (en) * | 1981-12-24 | 1983-07-01 | Canon Inc | Controller for concentration of developer |
-
1982
- 1982-09-16 JP JP16137982A patent/JPS5950472A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50120634A (en) * | 1974-03-07 | 1975-09-22 | ||
| JPS58111069A (en) * | 1981-12-24 | 1983-07-01 | Canon Inc | Controller for concentration of developer |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0923007A2 (en) * | 1997-12-12 | 1999-06-16 | Samsung Electronics Co., Ltd. | Developer supply method for a wet electrographic printer |
| EP0923006A2 (en) * | 1997-12-12 | 1999-06-16 | Samsung Electronics Co., Ltd. | Developer supply method for a wet electrographic printer |
| EP0923007A3 (en) * | 1997-12-12 | 2001-03-28 | Samsung Electronics Co., Ltd. | Developer supply method for a wet electrographic printer |
| EP0923006A3 (en) * | 1997-12-12 | 2001-04-04 | Samsung Electronics Co., Ltd. | Developer supply method for a wet electrographic printer |
| EP1014048A2 (en) * | 1998-12-17 | 2000-06-28 | Samsung Electronics Co. Ltd. | Apparatus for indicating level of liquid in tank |
| EP1014048A3 (en) * | 1998-12-17 | 2001-09-05 | Samsung Electronics Co. Ltd. | Apparatus for indicating level of liquid in tank |
| US6452202B1 (en) | 1998-12-17 | 2002-09-17 | Samsung Electronics Co., Ltd. | Apparatus for measuring level of liquid in tank |
| DE102010008241A1 (en) * | 2010-02-17 | 2011-08-18 | Océ Printing Systems GmbH, 85586 | Device for development of charge images in electrographic printing apparatus, has cleaning unit arranged in intake region of liquid developer exhibiting chamber, which is made to clean residual liquid developer of developer roll |
| DE102010008241B4 (en) * | 2010-02-17 | 2015-11-26 | Océ Printing Systems GmbH & Co. KG | Apparatus for developing charge images formed on a charge image carrier in an electrographic printer or copier |
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