JPS61208065A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS61208065A JPS61208065A JP60047383A JP4738385A JPS61208065A JP S61208065 A JPS61208065 A JP S61208065A JP 60047383 A JP60047383 A JP 60047383A JP 4738385 A JP4738385 A JP 4738385A JP S61208065 A JPS61208065 A JP S61208065A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- developing
- developing roll
- regulating
- regulating plate
- 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
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電子写真複写機の現像装置に関し、更に詳述す
ると、２成分現像剤を用いた際の現像ロール上の現像剤
濃度を常時均一になし得る改良された現像装置に関する
。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a developing device for an electrophotographic copying machine, and more specifically, the present invention relates to a developing device for an electrophotographic copying machine. The present invention relates to an improved developing device that can be improved.
（従来技術）
従来よシ、２成分現像剤を用いた現像装置として、第６
図に図示したように、現像剤を補給するためのトナーカ
ートリッジ２０が現像ロール２１に沿った現像容器２３
の上部に取シ付けられ、現像剤を現像ロール２１の軸方
向に均一に供給するものが一般に知られている。(Prior art) Conventionally, as a developing device using a two-component developer, the sixth
As shown in the figure, a toner cartridge 20 for replenishing developer is placed in a developer container 23 along a developer roll 21.
It is generally known that the developing roller 21 is attached to the upper part of the developing roller 21 and supplies the developer uniformly in the axial direction of the developing roller 21.
しかしこのような装置は、上述したように、現像剤を補
給するトナーカートリッジのためのスペースが現像容器
上部に設けられているため台、装置のコンパクト化、製
造コストの低減化の障害となっている。However, as mentioned above, in this type of device, the space for the toner cartridge that replenishes the developer is provided above the developer container, which is an obstacle to making the stand and device more compact and reducing manufacturing costs. There is.
そこで、この現像剤供給スペースを現像容器の側面側に
設けた所謂サイｒディスペンス方式の現像装置が知られ
ている。然るに、この現像装置では、現像剤が現像ロー
ルの軸方向に沿って一端側から他端側に向って供給され
るため、現像ロール面上で現像剤の片寄り（即ち、現像
剤供給スペースに多く、供給部から遠去かるにつれて除
々に少なくなる）を生じて不均一な現像剤濃度・分布を
形成し、従って現像像に濃度ムラを生じる原因となって
いる。Therefore, a so-called cylindrical dispense type developing device is known in which this developer supply space is provided on the side surface of the developer container. However, in this developing device, the developer is supplied from one end to the other end along the axial direction of the developing roll. This causes uneven developer concentration and distribution, resulting in uneven density in the developed image.
（発明が解決しようとする問題点）
本発明は、上述した従来装置に於る欠点を解消し、サイ
Ｐディスペンス方式で現像ロール上の現像剤濃度をロー
ル全体にわたり均等にして好適な現像の行える現像装置
を提供しようとするものである。(Problems to be Solved by the Invention) The present invention solves the above-mentioned drawbacks of the conventional apparatus, and uses the CyP dispensing method to uniformly distribute the developer concentration on the developing roll over the entire roll, thereby achieving suitable development. The present invention aims to provide a developing device.
（問題点を解決するための手段）
すなわち、本発明によれば、現像剤を現像ロールの軸に
対して平行な平面および直交する平面に沿って夫々循環
させ、現像剤供給部を現像ロール軸長の範囲外に配置し
た電子写真複写機の現像装置に於て、現像ロール軸に対
して直交する平面に沿って循環する現像剤を制御する規
制板の高さを部分的に高くして現像剤の移動を制限する
ように設けたことを特徴とする現像装置によって解決さ
れる。(Means for Solving the Problems) That is, according to the present invention, the developer is circulated along a plane parallel to the axis of the developing roll and a plane perpendicular to the axis of the developing roll, and the developer supply section is connected to the axis of the developing roll. In the developing device of an electrophotographic copying machine located outside the length range, the height of the regulating plate that controls the developer circulating along the plane perpendicular to the developing roll axis is partially increased. The problem is solved by a developing device characterized in that it is provided so as to restrict the movement of the agent.
（実施例）
以下、本発明の現像装置の実施例を図面によシ説明する
。(Example) Hereinafter, an example of the developing device of the present invention will be described with reference to the drawings.
第１図は、本発明の１実施例による現像装置を説明する
断面図、第２図はその要部を示す斜視図第１図に於て、
１は反時計廻りに回転する非磁性スリーブ２とその内部
に配置した固定マグロール６が組合された現像ロール、
４および５は前記現像ロール１と併設されて現像容器６
内で互いに間隔を隔てて路上下位置に配置された現像剤
搬送手段、７および８は前記現像剤搬送手段４，５のう
ち上方の搬送手段４に近接配置され、後述の説明によっ
て明らかにする現像ロール軸に対して直交する平面に沿
って循環される２成分現像剤９の流れを制御する規制板
、１０は前記現像ロール１のスリーブ２に近接して配設
され、前記現像ロール１上に形成される現像剤層の層厚
を規制するための現像剤層規制手段（以下、トリマーと
呼ぶ）を夫々示している。FIG. 1 is a sectional view illustrating a developing device according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the main parts thereof.
1 is a developing roll in which a non-magnetic sleeve 2 rotating counterclockwise and a fixed mag roll 6 disposed inside the sleeve are combined;
4 and 5 are a developing container 6 which is installed together with the developing roll 1.
The developer conveying means 7 and 8, which are arranged below the road at a distance from each other, are arranged close to the upper conveying means 4 of the developer conveying means 4 and 5, which will become clear from the description below. A regulating plate 10 that controls the flow of the two-component developer 9 that is circulated along a plane perpendicular to the developing roll axis is disposed close to the sleeve 2 of the developing roll 1 and is arranged on the developing roll 1. A developer layer regulating means (hereinafter referred to as a trimmer) for regulating the layer thickness of the developer layer formed in the figure is shown.
第２図で、前記現像剤搬送手段４及び５は夫々螺旋形状
の回転軸体（なお、下方の搬送手段５は図示していない
。また、以後、これら現像剤搬送手段のうち上方に位置
する搬送手段４を第１オー−ｌに下方の搬送手段５を第
２オーガと夫々呼ぶ）からなっておシ、前記第１オーガ
４は反時計廻りに、前記第２オーガ５は時計廻りに夫々
回転するように設けられている。In FIG. 2, the developer conveyance means 4 and 5 each have a helical rotating shaft (the lower conveyance means 5 is not shown). The conveying means 4 is called a first auger and the lower conveying means 5 is called a second auger. It is arranged to rotate.
また、前記第１オーガ４は軸長が前記現像ロール１より
も長く、１端側か現像ロール１の軸長の範囲外に伸長し
ている。Further, the first auger 4 has an axial length longer than the developing roll 1, and extends outside the range of the axial length of the developing roll 1 at one end.
前記現像容器６の内部空間には前記第１オーガ４および
第２オーガ５が夫々上下に区画配置されており、現像剤
９はこれらのオーガによシ上方位置より下方位置へ、ま
た下方位置より上方位置に循環されるようになっている
。The first auger 4 and the second auger 5 are arranged vertically in the internal space of the developer container 6, and the developer 9 is distributed by these augers from an upper position to a lower position, and from a lower position to a lower position. It is designed to be circulated to the upper position.
また、前記現像容器乙には前記現像ロール１の軸長の範
囲外に伸長した第１オーガ４の部分を収容する延設部６
ａの上方に現像剤９１ｒ、補給する現像剤供給部（以下
、ホッパーと呼ぶ）１１が設けられている。Further, in the developer container B, an extension part 6 that accommodates a portion of the first auger 4 that extends outside the range of the axial length of the developer roll 1 is provided.
A developer supply section (hereinafter referred to as a hopper) 11 for replenishing the developer 91r is provided above a.
本発明の現像装置によれば、前記現像剤９の流れを規制
する前記規制板７，８のうち、７は前記現像ロール１よ
シ遠い側の第１オーガ４面に近接９を規制するようにな
っておシ、その上端７ａが一部嫂溝状に形成されている
。すなわち、前記規制板７は前記ホラ／ｅ−１１に近い
側の端部が高くなっている。According to the developing device of the present invention, of the regulating plates 7 and 8 that regulate the flow of the developer 9, 7 regulates the flow of the developer 9 that is close to the first auger 4 surface on the far side from the developing roll 1. The upper end 7a is partially formed into a groove shape. That is, the end of the regulating plate 7 on the side closer to the hole/e-11 is higher.
このように現像装置が構成されていると、前記ホッパー
１１から補給された現像剤９は第１オーガ４によ）、前
記現像ロール１に沿って紙面の裏面側に向う水平方向に
搬送されて（第１図）、前記規制板７から溢れてくる現
像剤９を現像容器６の延設部６ａから現像容器乙の下方
へ落下（第２図、矢印Ａ参照）させる。この際、現像剤
９は前記規制板７のホツ、？−１１側では溢出が阻止さ
れると共に、現像容器乙の中央寄シの部分より下方位置
に落下される。下方位置に落下された現像剤９は第２オ
ーガ５により今度は紙面の裏面側よシ手前側に搬送（第
１図）される。この第１オーガ４および第２オーガ５に
よって現像剤９は現像ロール１の軸に対して平行な平面
内で上下に循環されながら前記マグロール３の磁力およ
びスリーブ２の回転により現像ロール１に吸着されて容
器６上方へ搬送される。上方へ搬送された現像剤９は前
記規制板８およびトリマー１０によって現像ロールへの
供給量を規制された後、所定厚の現像剤層を現像ロール
１に形成する。一方、現像剤層の形成に寄与しなかった
現像剤９は下方位置に落下され第２オーガ５によシ、現
像ロール１の軸に直交する平面に沿って再循環される。When the developing device is configured in this way, the developer 9 replenished from the hopper 11 is transported by the first auger 4 in the horizontal direction toward the back side of the paper along the developing roll 1. (FIG. 1), the developer 9 overflowing from the regulating plate 7 is caused to fall from the extending portion 6a of the developer container 6 to the lower part of the developer container B (see arrow A in FIG. 2). At this time, the developer 9 is applied to the hole of the regulation plate 7, ? On the -11 side, overflow is prevented and the developer container B is dropped to a lower position than the central part of the developer container B. The developer 9 dropped to the lower position is then transported by the second auger 5 from the back side of the paper to the front side (FIG. 1). The developer 9 is circulated up and down by the first auger 4 and the second auger 5 in a plane parallel to the axis of the developing roll 1, and is attracted to the developing roll 1 by the magnetic force of the mag roll 3 and the rotation of the sleeve 2. and is transported upward into the container 6. The amount of developer 9 transported upward is regulated by the regulating plate 8 and the trimmer 10 to the developing roll, and then a developer layer of a predetermined thickness is formed on the developing roll 1. On the other hand, the developer 9 that did not contribute to the formation of the developer layer falls to a lower position and is recirculated by the second auger 5 along a plane perpendicular to the axis of the developing roll 1.
このように本発明の現像装置は、現像剤９を現像ロール
１の軸に対して平行な平面および直交する平面に沿った
２方向に循環させ、かつ前記規制板７の一部の高さを高
めた形状によシ現像剤９の流れを規制することによシ、
前記スリーブ２上の現像剤濃度の均一化を計ると共に現
像剤の攪拌を行う。In this manner, the developing device of the present invention circulates the developer 9 in two directions along a plane parallel to the axis of the developing roll 1 and a plane perpendicular to the axis, and also controls the height of a portion of the regulating plate 7. By regulating the flow of the developer 9 due to the raised shape,
The developer is stirred in order to make the concentration of the developer on the sleeve 2 uniform.
仮に、前記規制板７の高さがスリーブの軸方向に対して
同じであると、従来装置で述べたように、ディスペンス
速度（ｆ／Ｂ■）を上げるに従いスリーブ上の現像剤濃
度はホツＡ−側で高くなシ安定した画像が得られないが
、このような不利益は本発明のように構成することによ
シ完全に解消された。If the height of the regulating plate 7 is the same in the axial direction of the sleeve, as described in the conventional device, as the dispensing speed (f/B) increases, the concentration of the developer on the sleeve increases. Although a stable image cannot be obtained due to the height on the - side, such disadvantages are completely eliminated by the configuration of the present invention.
なお、本発明は２成分現像剤を用いた現像装置として述
べたが、１成分系現像方式に於ても好適に使用すること
ができる。Although the present invention has been described as a developing device using a two-component developer, it can also be suitably used in a one-component developing system.
また、上記実施例の装置で現像ロール１はスリーブ回転
型として述べたが、スリーブ固定・マグロール回転型で
あってもよいことは当然である。Further, in the apparatus of the above embodiment, the developing roll 1 has been described as a sleeve rotating type, but it is of course possible to use a fixed sleeve/mag roll rotating type.
（発明の効果）
以上記述したとおシ、本発明の現像装置によれば、サイ
Ｐディスペンス方式が採用されているので装置のコン・
セクト化が達成できる。また、現像剤の流れを規制する
規制板の高さを一部分高くしてその上縁に段差を設けた
ことにより、スリーブ上の現像剤濃度を現像剤供給速度
に影響されることなく常に均一化して常時安定した現像
像が得られる。(Effects of the Invention) As described above, according to the developing device of the present invention, since the SaiP dispense method is adopted, the controller of the device
Sectification can be achieved. In addition, by partially increasing the height of the regulation plate that regulates the flow of developer and providing a step on its upper edge, the concentration of developer on the sleeve can always be made uniform without being affected by the developer supply speed. A stable developed image can be obtained at all times.
第１図は本発明の１実施例を説明する現像装置の断面図
、第２図は第１図の要部を示す斜視図、第３図は従来装
置を説明する斜視図である。
図中符号：
１・・・現像ロール、２・・・非磁性スリーブ、４．５
・・・現像剤搬送手段（オーガ）、６・・・現像容器、
７．８・・・規制板、９・・・２成分現像剤、１０・・
・現像剤層規制手段（トリマー）、１１・・・現像剤供
給部（ホツノぞ−）FIG. 1 is a sectional view of a developing device illustrating an embodiment of the present invention, FIG. 2 is a perspective view showing essential parts of FIG. 1, and FIG. 3 is a perspective view illustrating a conventional device. Codes in the figure: 1...Developing roll, 2...Nonmagnetic sleeve, 4.5
...Developer conveying means (auger), 6...Developer container,
7.8...Regulation plate, 9...Two-component developer, 10...
・Developer layer regulating means (trimmer), 11...Developer supply section (Hotsunozo-)
Claims (1)
する平面に沿つて夫々循環させ、現像剤供給部を現像ロ
ール軸長の範囲外に配置した電子写真複写機の現像装置
に於て、現像ロール軸に対して直交する平面に沿つて循
環する現像剤を制御する規制板の高さを部分的に高くし
て現像剤の移動を制限するように設けたことを特徴とす
る現像装置。In a developing device of an electrophotographic copying machine, the developer is circulated along a plane parallel to the axis of the developing roll and a plane perpendicular to the axis of the developing roll, and the developer supply section is disposed outside the range of the axial length of the developing roll. A developing device characterized in that a regulating plate for controlling developer circulating along a plane perpendicular to a developing roll axis is partially raised in height to restrict movement of the developer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60047383A JPS61208065A (en) | 1985-03-12 | 1985-03-12 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60047383A JPS61208065A (en) | 1985-03-12 | 1985-03-12 | Developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61208065A true JPS61208065A (en) | 1986-09-16 |
Family
ID=12773576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60047383A Pending JPS61208065A (en) | 1985-03-12 | 1985-03-12 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61208065A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5126799A (en) * | 1989-12-05 | 1992-06-30 | Ricoh Company, Ltd. | Image recording apparatus having a toner supply tank and a toner recovery tank configured into a unitary, disposable magazine |
| US5255061A (en) * | 1989-12-04 | 1993-10-19 | Ricoh Company, Ltd. | Image forming apparatus with a first and second lid |
| EP0871092A2 (en) * | 1997-04-07 | 1998-10-14 | Canon Kabushiki Kaisha | Toner frame process cartridge |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5430840A (en) * | 1977-08-12 | 1979-03-07 | Hitachi Metals Ltd | Toner supplying apparatus |
| JPS58147763A (en) * | 1982-02-25 | 1983-09-02 | Konishiroku Photo Ind Co Ltd | Developing device |
-
1985
- 1985-03-12 JP JP60047383A patent/JPS61208065A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5430840A (en) * | 1977-08-12 | 1979-03-07 | Hitachi Metals Ltd | Toner supplying apparatus |
| JPS58147763A (en) * | 1982-02-25 | 1983-09-02 | Konishiroku Photo Ind Co Ltd | Developing device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5255061A (en) * | 1989-12-04 | 1993-10-19 | Ricoh Company, Ltd. | Image forming apparatus with a first and second lid |
| US5126799A (en) * | 1989-12-05 | 1992-06-30 | Ricoh Company, Ltd. | Image recording apparatus having a toner supply tank and a toner recovery tank configured into a unitary, disposable magazine |
| USRE35528E (en) * | 1989-12-05 | 1997-06-10 | Ricoh Company, Ltd. | Image recording apparatus having a toner supply tank and a toner recovery tank configured into a unitary, disposable magazine |
| EP0871092A2 (en) * | 1997-04-07 | 1998-10-14 | Canon Kabushiki Kaisha | Toner frame process cartridge |
| EP0871092A3 (en) * | 1997-04-07 | 2000-09-06 | Canon Kabushiki Kaisha | Toner frame process cartridge |
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