JPH02287475A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPH02287475A JPH02287475A JP1109503A JP10950389A JPH02287475A JP H02287475 A JPH02287475 A JP H02287475A JP 1109503 A JP1109503 A JP 1109503A JP 10950389 A JP10950389 A JP 10950389A JP H02287475 A JPH02287475 A JP H02287475A
- Authority
- JP
- Japan
- Prior art keywords
- stirring
- stirring member
- developer
- inner bottom
- axial direction
- 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
- 238000003756 stirring Methods 0.000 claims description 66
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、現像剤を現像剤容器内で攪拌し現像剤担持体
側へ搬送する攪拌部材を有する現像器に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a developing device having a stirring member for stirring developer in a developer container and conveying the developer to a developer carrier.
［従来の技術］
従来、電子写真装置の現像器では、内部の現像剤を攪拌
しさらに現像剤担持体へ搬送・供給する目的で撹拌・搬
送機構を有するものが多い。[Prior Art] Conventionally, many of the developing devices of electrophotographic apparatuses have a stirring/conveying mechanism for the purpose of stirring the developer inside and further conveying/supplying the developer to a developer carrier.
一成分磁性現像剤（以下、トナーと称する）を用いた現
像器との従来例を第９図及び第１０図に示す。現像剤容
器ｌは、矢印Ａの方向に回転駆動される感光体２に対向
する開口を有し、その開口部には円筒形状の現像剤担持
体（以下、現像スリーブと称する）３か配設されて矢印
Ｂの方向に回転駆動される。現像スリーブ３の内部には
、図示しないが、複数の磁極を有する磁石か固定または
回転駆動されるように配置されている。現像剤規制部材
（以下、現像ブレードと称する）４は、現像スリーブ３
の表面に担持されるトナー層を所定の厚さに規制する。A conventional example of a developing device using a one-component magnetic developer (hereinafter referred to as toner) is shown in FIGS. 9 and 10. The developer container l has an opening facing the photoreceptor 2 which is rotationally driven in the direction of arrow A, and a cylindrical developer carrier (hereinafter referred to as a developing sleeve) 3 is disposed in the opening. and is rotated in the direction of arrow B. Although not shown, inside the developing sleeve 3, a magnet having a plurality of magnetic poles is arranged so as to be fixed or rotationally driven. A developer regulating member (hereinafter referred to as a developing blade) 4 is connected to a developing sleeve 3.
The toner layer carried on the surface of the toner layer is regulated to a predetermined thickness.
このトナー層はスリーブ又は磁石の回転によって搬送さ
れ電子写真感光体２に供給される。撹拌棒５は剛性のあ
る棒状部材を第４図に図示するような形状に折り曲げた
ものであっで、矢印Ｃの方向に回転駆動されて容器ｌの
内部のトナーを攪拌しスリーブ３の方向に搬送する。撹
拌棒５のトナー搬送力を高める目的で第１１図のように
回転の先端にゴム薄膜などのべろ６を付けることもある
。This toner layer is conveyed by rotation of the sleeve or magnet and supplied to the electrophotographic photoreceptor 2. The stirring rod 5 is a rigid rod-shaped member bent into the shape shown in FIG. transport. In order to increase the toner conveying force of the stirring rod 5, a tongue 6 such as a thin rubber film may be attached to the rotating tip as shown in FIG. 11.
［発明か解決しようとしている問題点］上記従来例では
、容器ｌの内部で撹拌棒５の回転領域の外にデッド・ス
ペースが生じで、トナーかスリーブへ搬送されずに残留
する。という問題点かあった。第９図に斜線部で示す領
域かそれである。[Problems to be Solved by the Invention] In the above-mentioned conventional example, a dead space is generated inside the container 1 outside the rotation area of the stirring rod 5, and the toner remains without being conveyed to the sleeve. There was a problem. This is the area shown in the shaded area in FIG.
容器ｌの容積を小さくすれば上記のデッド・スペースを
なくすことかできるか、トナーを補給したりあるいは現
像器を交換する頻度が増えてユーザーにとって煩わしく
、非経済的である。The dead space described above could be eliminated by reducing the volume of the container l, but the frequency of replenishing toner or replacing the developing device would increase, which would be troublesome for the user and uneconomical.
第１２図のように、撹拌棒５′を追加してデッド・スペ
ースを減らすこともできるか、回転駆動機構や回転軸周
りのシーリングを増やす必要があって構成か複雑になる
。その上回転トルクか大きくなってモータの負荷か大き
くなるという問題かあった。As shown in FIG. 12, it is possible to add a stirring rod 5' to reduce the dead space, or it would be necessary to increase the rotational drive mechanism and the sealing around the rotating shaft, which would complicate the structure. In addition, there was a problem in that the rotational torque increased and the load on the motor increased.
［問題点を解決するための手段］
本発明によれば第１攪拌部材に揺動自在に設けられた第
２攪拌部材を容器底面に沿って移動させることにより、
簡略な部品構成と単純な駆動機構で回転トルクを大きく
増加させることなく、現像器内部の現像剤の攪拌と搬送
を効率良く行なうことができる。[Means for solving the problem] According to the present invention, by moving the second stirring member swingably provided on the first stirring member along the bottom surface of the container,
With a simple component configuration and a simple drive mechanism, it is possible to efficiently agitate and transport the developer inside the developing device without significantly increasing the rotational torque.
［実施例］
第１図および第２図は本発明の第１の実施例である。７
は一端を第１の攪拌部材５に回動自在に取り付けた支持
部材であって他端で、第２の攪拌部材８を支持している
。攪拌部材５と８はどちらも現像有効長と同しかそれ以
上の長さにわたっで、現像スリーブ３の中心軸とほぼ平
行に張り渡されている。攪拌部材８は自重によって容器
ｌの底面内部に接触している。[Example] FIGS. 1 and 2 show a first example of the present invention. 7
is a support member whose one end is rotatably attached to the first stirring member 5, and the other end supports the second stirring member 8. Both stirring members 5 and 8 extend over a length that is equal to or longer than the effective development length, and are stretched substantially parallel to the central axis of the development sleeve 3. The stirring member 8 is in contact with the inside of the bottom surface of the container l due to its own weight.
第ｉ１拌部材５が回転すると、第１攪拌部材に取り付け
られた支持部材７の一端は運動して回転するか、この時
他端に支持された第２攪拌部材８は容器ｌの底面内部に
沿って底面に摺接しつつ直線的な往復移動をする。第３
図は攪拌部材５と８の位置関係を示している。矢印Ｃ１
Ｄはそれぞれ攪拌部材５，８の回転駆動の方向、往復運
動の範囲を示す。When the i1st stirring member 5 rotates, one end of the support member 7 attached to the first stirring member moves and rotates, or at this time, the second stirring member 8 supported at the other end moves inside the bottom of the container l. It moves back and forth in a straight line while sliding in contact with the bottom surface. Third
The figure shows the positional relationship between stirring members 5 and 8. Arrow C1
D indicates the rotational drive direction and reciprocating range of the stirring members 5 and 8, respectively.
本実施例においで、容器ｌに封入されたトナーの消費の
進行につれて矢印りに示された範囲に積層されたトナー
はその底部を攪拌部材８によって攪拌されて徐々に現像
スリーブ３の方向に搬送されていくことが確認された。In this embodiment, as the toner sealed in the container L is consumed, the toner stacked in the area indicated by the arrow is stirred at the bottom by the stirring member 8 and gradually transported in the direction of the developing sleeve 3. It has been confirmed that this will continue.
ｐＨ拌部材８の運動方向は往復であるが、容器ｌの底面
の形状を第１図のような傾斜を有するものにすることに
より矢印りの範囲に残留するトナーはほとんどなくなる
。第１攪拌棒５の回転範囲と現像スリーブ３との空間に
トナーか残留する（第１図斜線部）。Although the movement direction of the pH stirring member 8 is reciprocating, by making the bottom surface of the container 1 sloped as shown in FIG. 1, almost no toner remains in the area indicated by the arrow. Toner remains in the space between the rotation range of the first stirring rod 5 and the developing sleeve 3 (shaded area in FIG. 1).
第４図〜第６図は本発明の第２実施例である。4 to 6 show a second embodiment of the present invention.
第１攪拌棒５の回転半径を小さくして現像スリーブ３に
近接させることによっで、第１実施例において見られた
残留トナーを減少させることがてきる。しかし、第２攪
拌部材８の運動範囲りか小さくなり、また支持部材７か
長くなるために矢印Ｅの範囲にトナーか残留してしまう
ことがわかった。これは、第５図に示すように、攪拌部
材９ （９−１，９−２）を追加して支持部材７に取り
付けることによって解決される。この場合、）１１．件
部材９は長円運動をする（第６図）。Ｆ、Ｇ、Ｈ，Ｉは
それぞれ部材５．９−２．９−１．８の運動軌跡を示す
。攪拌部材５，８．９の運動範囲は連続するか重複する
ように構成するのか好ましい。By reducing the radius of rotation of the first stirring rod 5 and bringing it closer to the developing sleeve 3, it is possible to reduce the amount of residual toner observed in the first embodiment. However, it has been found that the range of movement of the second agitating member 8 becomes smaller and the supporting member 7 becomes longer, so that some toner remains in the range indicated by arrow E. This problem can be solved by adding stirring members 9 (9-1, 9-2) and attaching them to the support member 7, as shown in FIG. In this case)11. The member 9 moves in an ellipse (Fig. 6). F, G, H and I respectively indicate the movement trajectories of the members 5.9-2.9-1.8. It is preferable that the range of motion of the stirring members 5, 8.9 is continuous or overlapping.
？ＩＳ２攪拌部材８は自重により容器ｌの底面内部に接
触しているか、現像器の着脱時などに」−方へ運動する
自由度かある。これに起因するトラブルか発生するのを
防止するために、部材８か摺動可能に係合して部材８の
可動範囲を所定の往復移動の範囲に規制する規制部材ｌ
Ｏを容器ｌの底面内部に配設する。? The IS2 stirring member 8 is in contact with the inside of the bottom surface of the container l due to its own weight, or has a degree of freedom to move in the - direction when the developing device is attached or detached. In order to prevent troubles caused by this, a regulating member l slidably engages with the member 8 and limits the movable range of the member 8 to a predetermined range of reciprocating movement.
O is placed inside the bottom of the container l.
第７図、第８図は第３実施例である。FIGS. 7 and 8 show the third embodiment.
攪拌のデッド・スペースをさらに減少させるために、現
像器の底面の傾斜形状に合わせで、支持部材を分割する
。In order to further reduce the dead space for agitation, the support member is divided according to the sloped shape of the bottom surface of the developing device.
第１Ｗ１．件部材５に回動自在に取り付けられた第１支
持部材７の自由端には第２ＷＩ拌部材８が取り付けられ
ている。1st W1. A second WI stirring member 8 is attached to the free end of the first support member 7, which is rotatably attached to the support member 5.
さらに第２支持部材１１が第２攪拌部材８に回動自在に
取り付けられ、その自由端と途中に第３攪拌部材１２−
１と１２−２か取り付けられている。Further, a second support member 11 is rotatably attached to the second stirring member 8, and a third stirring member 12-
1 and 12-2 are attached.
そしで、第１攪拌部材５か回転駆動されると、部材８，
１１．１２−１．１２−２は、現像剤容器ｌの内部底面
に沿って往復運動することによっで、容器１内のトナー
をスリーブ３の方向へ攪拌、搬送する。Then, when the first stirring member 5 is rotationally driven, the members 8,
11.12-1.12-2 stirs and conveys the toner in the container 1 toward the sleeve 3 by reciprocating along the inner bottom surface of the developer container 1.
第８図に示す部材ｌＯは、容器ｌの内部底面に設けられ
た規制部材であっで、第２支持部材１３か容器ｌの内部
底面から離れる方向に運動するのを規制する。The member lO shown in FIG. 8 is a regulating member provided on the inner bottom surface of the container l, and restricts movement of the second support member 13 in a direction away from the inner bottom surface of the container l.
なお、支持部材と攪拌部材とは、例えばプラスチック成
型などによって一体の部材としてもよい。Note that the support member and the stirring member may be made into an integral member by, for example, plastic molding.
また、支持部材や撹拌部材の形状や分割の数・方法は、
現像剤容器ｌの内部底面の形状に合わせればよく、実施
例に限定されず、例えば、折れ曲がりを有する支持部材
凹凸を有する攪拌部材、ばねなどの振動可山な攪拌部材
、などを用いてもよい。In addition, the shape of the supporting member and stirring member, the number and method of division,
It is sufficient to match the shape of the inner bottom surface of the developer container l, and the present invention is not limited to the embodiments. For example, a supporting member having a bend, a stirring member having unevenness, a stirring member capable of vibrating such as a spring, etc. may be used. .
［発明の効果］
以上説明したように、回転する第１攪拌部材に支持部材
の一端を回動自在に取り付けてもう一端に支持された第
２攪拌部材か現像剤容器の底面内部に沿って往復運動す
るように構成することによっで、簡略な部品構成と単純
な駆動機構で回転トルクを大きく増加させることなく、
現像装置内部の現像剤の攪拌と搬送を効率良く行なっで
、残留トナー量を大幅に減少させることかできる。[Effects of the Invention] As explained above, one end of the support member is rotatably attached to the rotating first stirring member, and the second stirring member supported at the other end is moved back and forth along the inside of the bottom surface of the developer container. By configuring it to move, it has a simple component configuration and a simple drive mechanism, without significantly increasing rotational torque.
By efficiently stirring and transporting the developer inside the developing device, the amount of residual toner can be significantly reduced.
第１図、第２図、第３図は本発明の第１実施例の説明図
、第４図、第５図、第６図は第２実施例の説明図、第７
図、第８図は第３実施例のｌ
ｌ・−・現像剤容器
３・・・現像剤担持体
５・・・第１攪拌部材
７・・・第１支持部材
８・・・第２Ｗ＆拌部材
９・・・追加された攪拌部材
０・・・規制部材
ｌ・・・第２支持部材
２・・・第３攪拌部材
喘
Ｖ1, 2, and 3 are explanatory diagrams of the first embodiment of the present invention; FIGS. 4, 5, and 6 are explanatory diagrams of the second embodiment;
Figure 8 shows the third embodiment of l l...Developer container 3...Developer carrier 5...First stirring member 7...First support member 8...Second W & stirring Member 9...Added stirring member 0...Restricting member L...Second support member 2...Third stirring member V
Claims (1)
第１攪拌部材から現像剤担持体の 軸方向に対して略垂直な方向に伸びる支持 部材と、支持部材に支持され、かつ軸方向 に対して略平行な第２攪拌部材とを有し、 支持部材が第１攪拌部材に揺動自在に取 り付けられ、第１攪拌部材の回転によって 第２攪拌部材が現像剤容器の内部底面に 沿って往復運動をするように構成されたこ とを特徴とする現像器。 （２）支持部材上で、第１攪拌部材と第２攪拌部材との
間に１個以上の攪拌部材を軸方向 に略平行になるように支持することを特徴 とする請求項（１）に記載の現像器。 （３）第２攪拌部材の少なくとも１か所を現像剤容器の
内部底面における所定の運動範囲 の近傍に規制する規制部材を内部底面上に 設けたことを特徴とする請求項（１）又は （２）に記載の現像器。 （４）現像剤容器内で回転駆動される第１攪拌部材と、
第１攪拌部材から現像剤担持体の 軸方向に対して略垂直な方向に伸びる第 １支持部材と、第１支持部材に支持され、 かつ軸方向に対して略平行な第２攪拌部材 と、 第２攪拌部材から軸方向に対して略垂直 な方向に伸びる第２支持部材と、 第２支持部材に支持され、かつ軸方向に 対して略平行な１個以上の第３攪拌部材と を有し、 第１支持部材、第２支持部材がそれぞれ 第１攪拌部材、第２攪拌部材に回動自在に 取り付けられ、 第１攪拌部材の回転によって第２攪拌部 材と第３攪拌部材が現像剤容器の内部底面 に沿って往復運動をするように構成された ことを特徴とする現像器。 （５）支持部材上で、第１攪拌部材と第２攪拌部材との
間に１個以上の攪拌部材を軸方向 に略平行になるように支持することを特徴 とする請求項（４）に記載の現像器。 （６）第２支持部材、第３攪拌部材のうちの少なくとも
１か所を現像剤容器の内部底面に おける所定の運動範囲の近傍に規制する規 制部材を内部底面上に設けたことを特徴と する請求項（４）又は（５）に記載の現像 器。[Scope of Claims] (1) A first stirring member that is rotationally driven within the developer container;
a supporting member extending from the first stirring member in a direction substantially perpendicular to the axial direction of the developer carrier; and a second stirring member supported by the supporting member and substantially parallel to the axial direction; A developing device characterized in that the member is swingably attached to the first stirring member, and the second stirring member is configured to reciprocate along the inner bottom surface of the developer container by rotation of the first stirring member. vessel. (2) Claim (1) characterized in that one or more stirring members are supported on the support member so as to be substantially parallel to the axial direction between the first stirring member and the second stirring member. The developer described. (3) A regulating member is provided on the inner bottom surface of the developer container for regulating at least one part of the second stirring member near a predetermined movement range on the inner bottom surface of the developer container. The developing device described in 2). (4) a first stirring member that is rotationally driven within the developer container;
a first support member extending from the first stirring member in a direction substantially perpendicular to the axial direction of the developer carrier; a second stirring member supported by the first support member and substantially parallel to the axial direction; It has a second support member extending from the second stirring member in a direction substantially perpendicular to the axial direction, and one or more third stirring members supported by the second support member and substantially parallel to the axial direction. The first supporting member and the second supporting member are rotatably attached to the first stirring member and the second stirring member, respectively, and the rotation of the first stirring member causes the second stirring member and the third stirring member to move into the developer container. A developing device configured to reciprocate along the inner bottom surface of the developing device. (5) Claim (4) characterized in that one or more stirring members are supported on the support member so as to be substantially parallel to the axial direction between the first stirring member and the second stirring member. The developer described. (6) A regulating member is provided on the inner bottom surface of the developer container for regulating at least one of the second support member and the third stirring member to be in the vicinity of a predetermined movement range on the inner bottom surface of the developer container. The developing device according to claim (4) or (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1109503A JPH02287475A (en) | 1989-04-28 | 1989-04-28 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1109503A JPH02287475A (en) | 1989-04-28 | 1989-04-28 | Developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02287475A true JPH02287475A (en) | 1990-11-27 |
Family
ID=14511916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1109503A Pending JPH02287475A (en) | 1989-04-28 | 1989-04-28 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02287475A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0487862U (en) * | 1990-12-04 | 1992-07-30 | ||
| WO2020066195A1 (en) * | 2018-09-28 | 2020-04-02 | Brother Kogyo Kabushiki Kaisha | Developing cartridge |
-
1989
- 1989-04-28 JP JP1109503A patent/JPH02287475A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0487862U (en) * | 1990-12-04 | 1992-07-30 | ||
| WO2020066195A1 (en) * | 2018-09-28 | 2020-04-02 | Brother Kogyo Kabushiki Kaisha | Developing cartridge |
| JP2020052311A (en) * | 2018-09-28 | 2020-04-02 | ブラザー工業株式会社 | Developing cartridge |
| US10739698B2 (en) | 2018-09-28 | 2020-08-11 | Brother Kogyo Kabushiki Kaisha | Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing |
| US10901340B2 (en) | 2018-09-28 | 2021-01-26 | Brother Kogyo Kabushiki Kaisha | Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing |
| US11143981B2 (en) | 2018-09-28 | 2021-10-12 | Brother Kogyo Kabushiki Kaisha | Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing |
| US11537062B2 (en) | 2018-09-28 | 2022-12-27 | Brother Kogyo Kabushiki Kaisha | Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing |
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