JPH04157487A - Stirring apparatus of two-component developer - Google Patents
Stirring apparatus of two-component developerInfo
- Publication number
- JPH04157487A JPH04157487A JP2283060A JP28306090A JPH04157487A JP H04157487 A JPH04157487 A JP H04157487A JP 2283060 A JP2283060 A JP 2283060A JP 28306090 A JP28306090 A JP 28306090A JP H04157487 A JPH04157487 A JP H04157487A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- supply port
- screws
- container
- central position
- 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.)
- Granted
Links
- 238000003756 stirring Methods 0.000 title claims abstract description 24
- 239000006185 dispersion Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
=概 要:
電子写真装置において使用される2成分現像剤の攪拌装
置に関し、
供給した現像剤の攪拌並びに均等分散に要する時間の短
縮化を目的とし、
電子写真装置において使用される2成分現像剤の攪拌装
置であって、前記2成分現像剤を攪拌混合すると共に、
接近して併設され、互いに逆方向に回転する2本の搬送
スクリューと、該搬送スクリューを囲繞すると共に前記
現像剤を収容する容器と、該容器の上面であって、前記
2本の搬送スフIJ =−の併設方向中央位置に設けら
れた現像剤供給口とを具備するよう構成する。[Detailed Description of the Invention] = Overview: This invention relates to a stirring device for two-component developer used in an electrophotographic device, with the purpose of shortening the time required for stirring and uniformly dispersing the supplied developer. A stirring device for a two-component developer used, which stirs and mixes the two-component developer, and
two conveyance screws that are arranged close together and rotate in opposite directions; a container that surrounds the conveyance screws and accommodates the developer; = - A developer supply port provided at a central position in the direction of juxtaposition.
本発明は、電子写真装置において使用される2成分現像
剤の攪拌装置に関する。The present invention relates to a two-component developer stirring device used in an electrophotographic apparatus.
:従来の技術;
電子写真装置におし)で、ドラム上にトナーを静電的に
付着させるたtには該トナーを帯電させる必要がある。2. Description of the Related Art: In order to electrostatically deposit toner on a drum in an electrophotographic apparatus, it is necessary to charge the toner.
このトナーを帯電させる方法として、キアリアと呼ばれ
る鉄粉と、トナーであるカーボンとを攪拌、混合すると
共にトナーを摩擦帯電させる方法がある。この2成分現
像剤を攪拌するには搬送スクリューを使用することが多
い。As a method of charging this toner, there is a method of stirring and mixing iron powder called Chiaria and carbon that is the toner, and simultaneously charging the toner with friction. A conveying screw is often used to stir this two-component developer.
搬送スクリューや現像剤を収容している容器には、劣化
した現像剤を排出するための排出口と、新たな現像剤を
供給する現像剤供給口とを有している。供給口は、消耗
したトナーのみの供給用としても使われる。これら供給
された現像剤の各成分は他方の成分と互いに十分に攪拌
、混合されなければならず、そのため搬送スクリュー上
に供給口を設け、搬送スクリュー上に落下させて攪拌す
るのである。現像剤を十分に攪拌するため、2本の搬送
スクリューを併設し、互いに逆方向に回転させることに
より現像剤を循環させつつ攪拌する方法が採られている
。The transport screw and the container housing the developer have an outlet for discharging deteriorated developer and a developer supply port for supplying new developer. The supply port is also used for supplying only used toner. Each component of the supplied developer must be sufficiently agitated and mixed with the other component, and for this reason, a supply port is provided on the conveying screw and the developer is dropped onto the conveying screw for stirring. In order to sufficiently stir the developer, a method has been adopted in which two conveyance screws are provided and rotated in opposite directions to circulate and stir the developer.
コ発明が解決しようとする課題〕
然しなから、トナーを補給した場合や、新たに現像剤を
供給した場合に、これらが搬送スクリューの回転によっ
て一様に攪拌され、かつ、容器内に現像剤を行き渡るせ
るためには現像剤の供給口の位置によっては相応の時間
を要し、その間電子写真装置が使用できなし1という不
便があった。[Problems to be Solved by the Invention] However, when toner is replenished or new developer is supplied, these are uniformly stirred by the rotation of the conveying screw, and the developer is not deposited in the container. Depending on the position of the developer supply port, it takes a considerable amount of time to distribute the developer, and the electrophotographic apparatus cannot be used during this time, which is an inconvenience.
依って本発明は、供給した現像剤の攪拌並びに均等分散
に要する時間の短縮化を目的とする。Therefore, an object of the present invention is to shorten the time required for stirring and uniformly dispersing the supplied developer.
上記目的に鑑みて本発明は、電子写真装置において使用
される2成分現像剤の攪拌装置であって、前記2成分現
像剤を攪拌混合すると共に、接近して併設され、互いに
逆方向に回転する2本の搬送スクリューと、該搬送スク
リューを囲繞すると共に前記現像剤を収容する容器と、
該容器の上面であって、前記2本の搬送スクリューの併
設方向中央位置に設けられた現像剤供給口とを具備する
ことを特徴とする2成分現像剤の攪拌装置を提供する。In view of the above object, the present invention provides a two-component developer agitation device used in an electrophotographic apparatus, which agitates and mixes the two-component developer, and which is arranged close to each other and rotates in opposite directions. two transport screws; a container surrounding the transport screws and accommodating the developer;
A two-component developer stirring device is provided, characterized in that the developer supply port is provided on the upper surface of the container at a central position in the direction in which the two conveyance screws are arranged side by side.
警乍 用〕
現像剤供給口を2本の搬送スクリューの併設方向中央位
置に設けているため、この供給口から現像剤を投入する
と夫々の搬送スクリュー上に現像剤が落下し、互いに逆
方向に回転する各搬送スクリュー上に落下した現像剤は
所定の方向に循環するが、容器の中全体に現像剤が行き
渡るまでの経路(時間)は、投入された現像剤が一方の
搬送スクリュー上にのみ落下した場合と比較して短くな
る。[For Police] The developer supply port is located at the center of the two transport screws, so when developer is introduced from this supply port, the developer falls onto each transport screw and flows in opposite directions. The developer that has fallen onto each rotating transport screw circulates in a predetermined direction, but the path (time) it takes for the developer to spread throughout the container is such that the developer that has been put in only flows onto one transport screw. It will be shorter than it would be if it fell.
以下本発明を添付図面に示す実施例に基づき更に詳細に
説明する。The present invention will be described in more detail below based on embodiments shown in the accompanying drawings.
第1図と第2図とを参照すると、容器12の中には分離
壁26を間に介在させて1対の搬送スクリュー10a、
10bを近接して併設している。各搬送スクリュー10
a、10bは互いに逆の方向に回転し、各搬送スクリュ
ー上に載った現像剤は閉ループを描く搬送軌跡によって
1対の搬送スクリュー上を循環する。容器12の上面で
あって、上記1対の搬送スクリュー10a、10bの併
設方向中央位置であって、かつ、搬送スクリューの長手
方向中央位置に現像剤供給口16を設けてあり、トナー
の補給や新たな現像剤を供給することができる。この場
合、トナーや現像剤28は各搬送スクリュー上に落下す
ることとなる。容器12の下面には劣化した現像剤を排
出させる排出口14が設けられており、平常時はシャッ
ターと呼ばれる蓋部材15によって閉じられている。新
たな現像剤を供給する場合には、その前に前記排出口1
4から劣化した旧現像剤を排出しておく必要があること
は勿論である。Referring to FIGS. 1 and 2, the container 12 includes a pair of conveying screws 10a with a separating wall 26 interposed therebetween.
10b is located nearby. Each conveyance screw 10
a and 10b rotate in opposite directions, and the developer placed on each conveyance screw circulates on the pair of conveyance screws along a conveyance trajectory that draws a closed loop. A developer supply port 16 is provided on the upper surface of the container 12, at a central position in the direction in which the pair of conveyance screws 10a and 10b are arranged side by side, and at a central position in the longitudinal direction of the conveyance screws. New developer can be supplied. In this case, the toner and developer 28 will fall onto each transport screw. A discharge port 14 for discharging deteriorated developer is provided on the lower surface of the container 12, and is normally closed by a lid member 15 called a shutter. When supplying new developer, first
Of course, it is necessary to discharge the deteriorated old developer from step 4.
1対の搬送スクリューの併設方向前方には供給ローラ1
8とマグネットローラ2oとが搬送スクリューに平行に
設けられており、更にその前方であって容器12の外側
位置にはドラム3oが配設されている。搬送スクリュー
によって攪拌された現像剤を、供給ローラ18を介して
マグネットローラ2oの表面に均等に吸着させるには、
搬送スクリュー10a。A supply roller 1 is placed in front of the pair of conveyance screws in the direction in which they are arranged side by side.
8 and a magnet roller 2o are provided in parallel to the conveying screw, and a drum 3o is further provided in front of the conveyance screw and outside the container 12. In order to evenly adsorb the developer stirred by the conveyance screw onto the surface of the magnet roller 2o via the supply roller 18,
Conveyance screw 10a.
10bの長手方向に現像剤を均等に行き渡ろせる必要が
あるたt、補給されたトナーや現像剤28のうち搬送ス
クリュー10a上に落下したものは、ライン22で示す
軌跡によって攪拌されつつ移動し、搬送スクlJニー1
0b上に落下したものは、ライン24で示す軌跡を移動
するまで現像剤を供給ローラ18によってマグネットロ
ーラ20へ供給することを停止しておかなけらばならず
、その間は電子写真装置そのものを作動させることがで
きない。It is necessary to distribute the developer evenly in the longitudinal direction of the conveyor screw 10b, and among the replenished toner and developer 28, those that have fallen onto the conveying screw 10a are moved while being agitated by the trajectory shown by the line 22. , transport screen lJ knee 1
0b, the developer must be stopped from being supplied to the magnet roller 20 by the supply roller 18 until it moves along the trajectory shown by the line 24, and during that time the electrophotographic apparatus itself must not be operated. I can't do it.
然しなから、従来タイプの攪拌装置を主に示す第3図を
参照すると、供給口16は一方の搬送スクリュー10a
上に設けられており、投入されたトナー又は現像剤が行
き渡るにはライン23で示す軌跡を移動しなければなら
ない。この移動時間は2本の搬送ローラ10a、10b
の合計長さに対応し、本発明の場合の移動時間がライン
22(又は24)に相当する長さに対応するため、本発
明では従来の半分の時間しかかからないことがわかる。However, referring to FIG. 3 which mainly shows a conventional type stirring device, the supply port 16 is connected to one of the conveying screws 10a.
In order for the injected toner or developer to spread all over, it must move along the trajectory shown by line 23. This travel time is calculated by the two transport rollers 10a and 10b.
Since the travel time in the case of the present invention corresponds to the length corresponding to line 22 (or 24), it can be seen that the present invention takes only half the time compared to the conventional one.
これは、供給するトナー或いは現像剤を互いに逆方向に
回転して゛、)る各搬送スクリュー10a=10bに分
割して落下させてし)ることに起因巳で5)る。攪拌後
の現像剤の均質化を考えれば、第1図に示す様に供給口
16:は搬送スクリュー10a40bの併設方向位置中
央位置のみなあず、長さ方向の中央位置であることが最
も望ましし)が、長さ方向中央位置から幾分か一方に偏
ってし)ることは本発明の範囲内である。This is due to the fact that the supplied toner or developer is divided and dropped onto each of the conveying screws 10a and 10b, which rotate in opposite directions 5). Considering the homogenization of the developer after stirring, it is most desirable that the supply port 16 is located not only at the center position in the direction in which the conveying screws 10a40b are arranged, but also at the center position in the length direction, as shown in FIG. It is within the scope of the present invention that the position (b) is slightly biased to one side from the central position in the longitudinal direction.
口発明の効果二
以上の説明から明るかな様に本発明によれば、供給した
トナーや現像剤の攪拌並びに均等分散に要する時間の短
縮化が達成される。Effects of the Invention As is clear from the above description, according to the present invention, the time required for stirring and uniformly dispersing the supplied toner and developer can be shortened.
第1図は本発明に係る攪拌装置を主に示す斜視図、
第2図は第1図の矢視線1−Iによる断面図、第3図は
従来の攪拌装置を主に示す斜視図である。
10a、10b・・・搬送スクリュー、12・・・容器
、 16・・・供給口、28・・・供給された現
像剤。FIG. 1 is a perspective view mainly showing a stirring device according to the present invention, FIG. 2 is a sectional view taken along arrow line 1-I in FIG. 1, and FIG. 3 is a perspective view mainly showing a conventional stirring device. . 10a, 10b... Conveyance screw, 12... Container, 16... Supply port, 28... Supplied developer.
Claims (1)
拌装置であって、 前記2成分現像剤(28)を攪拌混合すると共に、接近
して併設され、互いに逆方向に回転する2本の搬送スク
リュー(10a、10b)と、 該搬送スクリューを囲繞すると共に前記現像剤を収容す
る容器(12)と、 該容器の上面であって、前記2本の搬送スクリューの併
設方向中央位置に設けられた現像剤供給口(16)と を具備することを特徴とする2成分現像剤の攪拌装置。 2、前記現像剤供給口が前記2本の搬送スクリューの併
設方向中央位置であると共に、該搬送スクリューの長さ
方向中央位置に設けられて成る請求項1記載の2成分現
像剤の攪拌装置。[Scope of Claims] 1. A two-component developer stirring device used in an electrophotographic apparatus, which stirs and mixes the two-component developer (28), and which is arranged in close proximity and in opposite directions. Two rotating transport screws (10a, 10b); A container (12) surrounding the transport screws and accommodating the developer; and an upper surface of the container in the direction in which the two transport screws are arranged side by side. A two-component developer stirring device characterized by comprising a developer supply port (16) provided at a central position. 2. The two-component developer stirring device according to claim 1, wherein the developer supply port is provided at a central position in the direction in which the two transport screws are arranged side by side, and at a central position in the longitudinal direction of the transport screws.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2283060A JP2628605B2 (en) | 1990-10-20 | 1990-10-20 | Stirring device for two-component developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2283060A JP2628605B2 (en) | 1990-10-20 | 1990-10-20 | Stirring device for two-component developer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04157487A true JPH04157487A (en) | 1992-05-29 |
JP2628605B2 JP2628605B2 (en) | 1997-07-09 |
Family
ID=17660687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2283060A Expired - Fee Related JP2628605B2 (en) | 1990-10-20 | 1990-10-20 | Stirring device for two-component developer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2628605B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02132476A (en) * | 1988-11-14 | 1990-05-21 | Konica Corp | Developing device |
-
1990
- 1990-10-20 JP JP2283060A patent/JP2628605B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02132476A (en) * | 1988-11-14 | 1990-05-21 | Konica Corp | Developing device |
Also Published As
Publication number | Publication date |
---|---|
JP2628605B2 (en) | 1997-07-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH09288412A (en) | Developing device | |
JPH0134379B2 (en) | ||
JPH11202626A (en) | Developing device | |
JPH04157487A (en) | Stirring apparatus of two-component developer | |
JP2939099B2 (en) | Developing device | |
JPS6318374A (en) | Developing device | |
JPH11174800A (en) | Developing device | |
US5809383A (en) | Electrostatic developing device | |
JP2881449B2 (en) | Developing device | |
JPH07253712A (en) | Developing device | |
US5839031A (en) | Electrostatographic developing device | |
JP3010987B2 (en) | Developing device | |
JPH0311376A (en) | Carrier supply jig | |
JPH06348125A (en) | Developing device | |
JPH075763A (en) | Developing device | |
JPS5997166A (en) | Agitator for developer | |
JPH0553440A (en) | Developing powder supplying device for image forming device | |
JPH10177293A (en) | Developing device for electrophotographic device | |
JP2827438B2 (en) | Developing device | |
JPH0542441Y2 (en) | ||
JPS6318381A (en) | Developing device | |
JPH07114257A (en) | Developing device | |
JPH01321459A (en) | Developing device | |
JPS63195676A (en) | Developing device | |
JPH0335271A (en) | Developing device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |