JPH0377510B2 - - Google Patents
Info
- Publication number
- JPH0377510B2 JPH0377510B2 JP56214245A JP21424581A JPH0377510B2 JP H0377510 B2 JPH0377510 B2 JP H0377510B2 JP 56214245 A JP56214245 A JP 56214245A JP 21424581 A JP21424581 A JP 21424581A JP H0377510 B2 JPH0377510 B2 JP H0377510B2
- Authority
- JP
- Japan
- Prior art keywords
- developer
- paddle
- casing
- developing sleeve
- conveying
- 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 - Lifetime
Links
- 238000003756 stirring Methods 0.000 claims description 17
- 108091008695 photoreceptors Proteins 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 3
- 230000032258 transport Effects 0.000 description 9
- 238000005086 pumping Methods 0.000 description 3
- 238000007790 scraping Methods 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
Description
【発明の詳細な説明】
本発明は、電子写真複写機の乾式現像装置に関
し、特にコンパクトで簡単な構成により現像剤の
搬送撹拌を行なえるようにした現像装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dry developing device for an electrophotographic copying machine, and more particularly to a developing device that is compact and simple in structure and capable of transporting and agitating developer.
従来、この種の現像装置では、磁石を内蔵した
現像スリーブ上に現像剤の磁気ブラシを形成し、
この磁気ブラシを電子写真複写機の感光体に接触
させることにより、感光体の潜像を顕像化する構
成となつている。 Conventionally, in this type of developing device, a magnetic brush of developer is formed on a developing sleeve containing a built-in magnet.
By bringing this magnetic brush into contact with the photoreceptor of the electrophotographic copying machine, the latent image on the photoreceptor is visualized.
上記現像スリーブ上に現像剤を供給するには、
現像剤を収納した現像器ケーシング内に現像剤汲
上ローラを設けて、これにより汲上供給を行なう
構造となつている。この汲上ローラは同じく磁石
を内蔵しており、磁力によつて現像剤の汲上げ、
搬送、供給を行なう。 To supply the developer onto the developing sleeve,
A developer scooping roller is provided in a developer casing that houses the developer, and the developer is pumped up and supplied. This pumping roller also has a built-in magnet, and uses magnetic force to pump up the developer.
Transport and supply.
また、上記現像器ケーシング内には、現像剤中
のトナー濃度を均一にするために前記汲上ローラ
及び現像スリーブと平行方向に現像剤を撹拌移送
する撹拌装置（スクリユー、固定羽根、クロスミ
キシング機構等）が設けられている。 Further, in the developer casing, there is a stirring device (a screw, a fixed blade, a cross mixing mechanism, etc.) that stirs and transfers the developer in a direction parallel to the pumping roller and the developing sleeve in order to make the toner concentration in the developer uniform. ) is provided.
しかし、最近は現像スリーブに現像剤を供給す
る搬送体として、上記磁石を内蔵した汲上ローラ
の代りにパドルを使用する装置が多くなつてきて
いる。その理由は、パドルがコスト的に安い事に
よる。 However, recently, more and more devices are using paddles instead of the above-mentioned pumping rollers with built-in magnets as conveying bodies for supplying developer to the developing sleeves. The reason for this is that the paddle is cheap in terms of cost.
従来、パドルを用いた現像装置では、パドルは
単に現像剤を搬送供給するもので、この搬送時に
現像剤を前記現像スリーブと直交方向に撹拌（縦
撹拌）して、補給されたトナーのチヤージングア
ツプを行なうにすぎない。従つて、トナー濃度を
均一にするため現像剤を現像スリーブと平行方向
に撹拌するいわゆる横撹拌を行なうには、前記し
たクロスミキシング機構等を別に設けるようにし
ている。 Conventionally, in a developing device using a paddle, the paddle simply transports and supplies the developer, and during this transport, the developer is stirred in a direction perpendicular to the developing sleeve (vertical stirring) to charge the replenished toner. It's just a matter of making an effort. Therefore, in order to perform so-called lateral stirring in which the developer is stirred in a direction parallel to the developing sleeve in order to make the toner concentration uniform, the above-mentioned cross mixing mechanism or the like is separately provided.
また、パドルの内部に、該パドルの回転と連動
して現像剤の横撹拌を行なう装置を設けたものも
提案されているが、パドル自体はやはり縦撹拌を
行なうのみである。 It has also been proposed that a device is provided inside the paddle to horizontally agitate the developer in conjunction with the rotation of the paddle, but the paddle itself only performs vertical agitation.
本発明は、上記したような従来の実状に基づ
き、パドル自体が縦撹拌と共に横撹拌を行なえる
構造とすることにより、全体構造を簡単でコンパ
クトにすることができる乾式現像装置を提供する
ことを目的とする。 The present invention is based on the above-mentioned conventional situation, and an object of the present invention is to provide a dry developing device whose overall structure can be made simple and compact by having a structure in which the paddle itself can perform vertical stirring as well as horizontal stirring. purpose.
本発明の特徴とするところは、現像スリーブに
現像剤を搬送供給するパドルが、現像スリーブと
ほぼ平行な回転パイプと、この回転パイプ周囲に
螺旋状に巻き付くように取り付けられ、且つ現像
器ケーシング内の現像剤をすくい上げて搬送する
と共に、同現像剤を回転パイプの回転軸心方向に
移送する少なくとも１枚と搬送撹拌羽根とから構
成され、回転パイプは搬送撹拌羽根により軸心方
向に送られて来る現像剤の到着端部寄り側部に現
像剤の入口を有すると共に、他側の側部には同現
像剤の出口を有し、該回転パイプ内部には、現像
剤を同回転パイプの入口から出口まで移送する搬
送部材が一体または別体に設けられていることに
ある。 The present invention is characterized in that the paddle that transports and supplies developer to the developing sleeve is attached to a rotating pipe that is substantially parallel to the developing sleeve, and is spirally wound around the rotating pipe, and is attached to the developing device casing. The rotary pipe is composed of at least one sheet that scoops up and conveys the developer in the rotary pipe and transports the developer in the direction of the rotation axis of the rotary pipe, and a conveyance agitation blade. It has an inlet for the developer on the side near the end where the incoming developer arrives, and has an outlet for the developer on the other side. A conveyance member for conveying from the inlet to the outlet is provided integrally or separately.
以下、図面に示す実施例により本発明を説明す
る。 The present invention will be explained below with reference to embodiments shown in the drawings.
第１図において、本実施例の現像装置は従来と
同様、乾式現像剤Ｄを収納する現像器ケーシング
７と、該現像器ケーシング７内の現像剤Ｄより磁
気ブラシを形成して電子写真複写機の感光体１の
潜像に接触させる現像スリーブ２と、前記現像器
ケーシング７内にガイド部材８によつて形成され
たホツパー状の現像剤貯留部５を通して、現像器
ケーシング７内の現像剤Ｄを前記現像スリーブ２
に供給する現像剤搬送撹拌用のパドル４とを備え
ている。なお、現像器ケーシング７にはトナー補
給部材６が設けられ、現像スリーブ２は複数の磁
石３を内蔵している。また、ガイド部材８は現像
スリーブ２上の用済現像剤を掻き落とすセパレー
タの役目を兼ねている。 In FIG. 1, the developing device of this embodiment is similar to the conventional one, and includes a developing device casing 7 containing a dry type developer D, and a magnetic brush formed from the developer D in the developing device casing 7 to form an electrophotographic copying machine. The developer D in the developer casing 7 is passed through the developer sleeve 2 brought into contact with the latent image on the photoreceptor 1 and the hopper-shaped developer reservoir 5 formed in the developer casing 7 by a guide member 8. The developing sleeve 2
The developer is provided with a paddle 4 for conveying and stirring the developer. Note that the developer casing 7 is provided with a toner supply member 6, and the developer sleeve 2 has a plurality of magnets 3 built therein. Further, the guide member 8 also serves as a separator for scraping off the spent developer on the developing sleeve 2.
前記パドル４は本発明によると、第１〜２図に
示すように、前記現像スリーブ２とほぼ平行に設
置された円筒状の回転パイプ４２と、この回転パ
イプ周囲に螺旋状に巻き付くように取り付けられ
た少なくとも１枚、本実施例では４枚の現像剤搬
送撹拌用の羽根４１とから構成されている。 According to the present invention, as shown in FIGS. 1 and 2, the paddle 4 includes a cylindrical rotary pipe 42 installed substantially parallel to the developing sleeve 2, and a cylindrical rotating pipe 42 that is wound spirally around the rotating pipe. It is comprised of at least one (four in this embodiment) developer conveying and stirring blades 41 attached thereto.
羽根４１は、現像器ケーシング７内の現像剤Ｄ
をすくい上げて前記現像剤貯留部５に送り込むと
共に、同現像剤を回転パイプ４２の回転軸心方向
に沿つて一方向に移送する作用をする。また、回
転パイプ４２は、搬送撹拌羽根４１により矢印Ａ
の如く軸心方向に送られて来る現像剤の到着端部
寄り側部に同現像剤の入口４３を有すると共に、
他側には同現像剤の出口４４を有している。 The blade 41 is used to remove the developer D in the developer casing 7.
It scoops up the developer and sends it to the developer storage section 5, and also transports the developer in one direction along the rotational axis direction of the rotary pipe 42. Further, the rotating pipe 42 is moved by the arrow A by the transport stirring blade 41.
It has an inlet 43 for the developer on the side near the arrival end of the developer sent in the axial direction, as shown in FIG.
The other side has an outlet 44 for the developer.
このような回転パイプ４２の内部には、現像剤
を同回転パイプ４２の入口４３から出口４４まで
搬送する搬送部材が一体または別体に設けられ
る。この搬送部材の一例は第３図に示すように、
コイルからなる線４５を回転パイプ４２の内部に
螺旋状に固定してなるものである。また、他の例
としては、第４図に示すように撹拌移送用スクリ
ユー４６が用いられ、これは回転パイプ４２とは
別に駆動される。 Inside the rotary pipe 42, a conveying member for conveying the developer from the inlet 43 to the outlet 44 of the rotary pipe 42 is provided integrally or separately. An example of this conveying member is as shown in FIG.
A wire 45 made of a coil is fixed spirally inside a rotary pipe 42. Further, as another example, as shown in FIG. 4, a stirring and transferring screw 46 is used, which is driven separately from the rotary pipe 42.
上記このように構成された現像装置において
は、パドル４が第１図のように反時計方向に回転
することにより、羽根４１が現像剤Ｄをすくつて
貯留部５まで搬送する。貯留部５に達した現像剤
はガイド部材８上を通つて反時計方向に回る現像
スリーブ２上に落下し、磁気ブラシとされて感光
体１に接触する。一方、羽根４１によつて搬送さ
れなかつた現像剤は第２図の矢印Ａのように、回
転パイプ４２と平行な横方向に移送されて、そし
て羽根４１によつて回転パイプ４２の入口４３に
矢印のように送り込まれる。このように回転パイ
プ４２の中に入つた現像剤は、第３図または第４
図のような搬送部材４５，４６によつて出口４４
から押し出され、再び矢印Ａのように移送され
る。従つて、パドル４が回転することによつて、
現像剤のすくい上げと横撹拌が同時に自動的に行
なわれる。この際、縦撹拌も行なわれることは勿
論である。従つて、横撹拌装置を別に設ける必要
がなく、構造が簡単でコンパクトな現像装置とす
ることができる。 In the developing device configured as described above, when the paddle 4 rotates counterclockwise as shown in FIG. 1, the blades 41 scoop up the developer D and convey it to the storage section 5. The developer that has reached the reservoir 5 passes over the guide member 8 and falls onto the developing sleeve 2, which rotates counterclockwise, and comes into contact with the photoreceptor 1 as a magnetic brush. On the other hand, the developer that has not been conveyed by the blades 41 is transferred in the horizontal direction parallel to the rotary pipe 42, as indicated by arrow A in FIG. It is sent in like an arrow. The developer that has entered the rotating pipe 42 in this way is
The outlet 44 is
It is pushed out from there and transported again in the direction of arrow A. Therefore, by rotating the paddle 4,
The developer is scooped up and horizontally stirred simultaneously and automatically. Of course, vertical stirring is also performed at this time. Therefore, there is no need to separately provide a horizontal stirring device, and the developing device can have a simple and compact structure.
なお、回転パイプ４２の入口４３は羽根４１の
回転方向直前に設けることにより現像剤が入り易
く、出口４４は羽根４１の直後に設けることによ
り、出口４４の前に溜まつた現像剤が既に押し除
けられているので、現像剤が出易くなる利点があ
る。 The inlet 43 of the rotary pipe 42 is provided just before the blade 41 in the rotational direction so that the developer can easily enter, and the outlet 44 is provided immediately after the blade 41 so that the developer accumulated in front of the outlet 44 is already pushed out. Since it is removed, there is an advantage that the developer comes out more easily.
上記したように、本発明によると、現像剤を現
像スリーブに搬送供給するパドル自体が、現像剤
の横撹拌作用を有する構成としたので、独立した
横撹拌装置を設ける必要がなく、簡単でコンパク
トな構造の乾式現像装置が得られる。 As described above, according to the present invention, the paddle itself that transports and supplies the developer to the developing sleeve has a lateral stirring action for the developer, so there is no need to provide an independent lateral stirring device, making it simple and compact. A dry developing device with a similar structure can be obtained.
また、本発明においては、パドルから直接現像
スリーブに現像剤を供給せずに、パドル４から現
像剤貯留部（ホツパー部）５に一旦現像剤を溜め
て、そこから現像スリーブ２に供給するようにし
たので、パドルによる現像剤搬送は断続的でよ
く、したがつて、低回転または羽根数が少くてす
むことになり、現像剤に余分なストレスを与えな
いですむので、現像剤の疲労に対して有利であ
る。 Furthermore, in the present invention, instead of directly supplying the developer from the paddle to the developing sleeve, the developer is temporarily stored in the developer storage section (hopper section) 5 from the paddle 4 and then supplied to the developing sleeve 2 from there. As a result, the developer conveyance by the paddle can be intermittent, and therefore low rotation speed or a small number of blades is required, and there is no need to put extra stress on the developer, which reduces developer fatigue. It is advantageous against
第１図は、本発明の一実施例に係る乾式現像装
置の断面図、第２図は第１図の要部の斜視図、第
３図は第２図の要部の縦断面図、第４図は第３図
と同部位の断面図で、第２図の要部の他の例の断
面図である。
Ｄ……乾式現像剤、１……感光体、２……現像
スリーブ、３……磁石、４……パドル、５……現
像剤貯留部、６……トナー補給部材、７……現像
器ケーシング、８……ガイド部材、４１……現像
剤搬送撹拌羽根、４２……回転パイプ、４３……
入口、４４……出口、４５……螺旋状コイル線
（搬送部材）、４６……スクリユー（搬送部材）。
FIG. 1 is a sectional view of a dry developing device according to an embodiment of the present invention, FIG. 2 is a perspective view of the main part of FIG. 1, and FIG. 3 is a vertical sectional view of the main part of FIG. FIG. 4 is a cross-sectional view of the same part as FIG. 3, and is a cross-sectional view of another example of the main part of FIG. 2. D...Dry developer, 1...Photoreceptor, 2...Developing sleeve, 3...Magnet, 4...Paddle, 5...Developer storage section, 6...Toner supply member, 7...Developer casing , 8... Guide member, 41... Developer transport stirring blade, 42... Rotating pipe, 43...
Inlet, 44... Outlet, 45... Spiral coil wire (conveying member), 46... Screw (conveying member).
Claims (1)
該現像器ケーシング内の現像剤より磁気ブラシを
形成して電子写真複写機の感光体潜像に接触させ
る現像スリーブと、現像器ケーシング内の現像剤
を前記現像スリーブに供給する現像剤搬送撹拌用
のパドルとを備え、該パドルは、前記現像スリー
ブとほぼ平行に設置された回転パイプと、この回
転パイプ周囲に螺旋状に巻き付くように取り付け
られ、且つ現像器ケーシング内の現像剤をすくい
上げて現像スリーブに供給するとともに、同現像
剤を回転パイプの回転軸心方向に移送する少なく
とも１枚の搬送撹拌羽根とから構成され、回転パ
イプは搬送撹拌羽根により軸心方向に送られて来
る現像剤の到着端部寄り側部に現像剤の入口を有
すると共に、他側の側部には同現像剤の出口を有
し、該回転パイプ内部には、現像剤を同回転パイ
プの入口から出口まで移送する搬送部材が設けら
れていることを特徴とする乾式現像装置。 ２ 現像剤搬送撹拌用パドルと現像スリーブとの
間にホツパー状の現像剤貯留部を設けてなる特許
請求の範囲第１項記載の乾式現像装置。[Claims] 1. A developer casing that houses a dry developer;
a developing sleeve for forming a magnetic brush from the developer in the developer casing and bringing it into contact with a latent image on a photoreceptor of an electrophotographic copying machine; and a developer conveying and stirring device for supplying the developer in the developer casing to the developer sleeve. The paddle includes a rotating pipe installed substantially parallel to the developing sleeve, and the paddle is attached to spirally wrap around the rotating pipe, and scoops up the developer in the developing device casing. It is composed of at least one conveyance agitation blade that supplies the developer to the developing sleeve and conveys the same developer in the direction of the rotation axis of the rotary pipe. It has an inlet for the developer on the side near the arrival end of the rotary pipe, and has an outlet for the developer on the other side. A dry developing device characterized by being provided with a conveying member for conveying the image. 2. The dry developing device according to claim 1, wherein a hopper-like developer storage section is provided between the developer conveying and stirring paddle and the developing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56214245A JPS58115461A (en) | 1981-12-28 | 1981-12-28 | Dry type developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56214245A JPS58115461A (en) | 1981-12-28 | 1981-12-28 | Dry type developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58115461A JPS58115461A (en) | 1983-07-09 |
| JPH0377510B2 true JPH0377510B2 (en) | 1991-12-10 |
Family
ID=16652574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56214245A Granted JPS58115461A (en) | 1981-12-28 | 1981-12-28 | Dry type developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58115461A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS599351U (en) * | 1982-07-12 | 1984-01-21 | 富士通株式会社 | Developer stirring device |
| JPH0614224B2 (en) * | 1984-05-18 | 1994-02-23 | 松下電器産業株式会社 | Development device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53146364A (en) * | 1977-05-26 | 1978-12-20 | Hoechst Ag | Mixxconveying apparatus and operating process therefor |
| JPS54119934A (en) * | 1978-03-09 | 1979-09-18 | Minolta Camera Co Ltd | Dry developing device for electrophotographic copier |
| JPS54136337A (en) * | 1978-04-14 | 1979-10-23 | Fujitsu Ltd | Toner feeder |
-
1981
- 1981-12-28 JP JP56214245A patent/JPS58115461A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53146364A (en) * | 1977-05-26 | 1978-12-20 | Hoechst Ag | Mixxconveying apparatus and operating process therefor |
| JPS54119934A (en) * | 1978-03-09 | 1979-09-18 | Minolta Camera Co Ltd | Dry developing device for electrophotographic copier |
| JPS54136337A (en) * | 1978-04-14 | 1979-10-23 | Fujitsu Ltd | Toner feeder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58115461A (en) | 1983-07-09 |
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