JPS6271984A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS6271984A JPS6271984A JP21312385A JP21312385A JPS6271984A JP S6271984 A JPS6271984 A JP S6271984A JP 21312385 A JP21312385 A JP 21312385A JP 21312385 A JP21312385 A JP 21312385A JP S6271984 A JPS6271984 A JP S6271984A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- developer
- roller
- toner
- sleeve
- 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
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
電子写真装置や、静電記録装置に用いられる現像装置で
あって、特に潜像担持体と現像ローラが対向する現像領
域に非磁性トナーのみを選択的に搬送できるようにした
現像装置。[Detailed Description of the Invention] [Summary] A developing device used in an electrophotographic device or an electrostatic recording device, which selectively applies only non-magnetic toner to a developing area where a latent image carrier and a developing roller face each other. A developing device that can be transported.
本発明は電子写真装置や、静電記録装置に用いられる現
像装置に係り、特に記録ドラムの周囲に形成されている
潜像担持体と現像ローラが対向する現像領域に非磁性ト
ナーのみを選択的に搬送できるようにした現像装置に関
する。The present invention relates to a developing device used in an electrophotographic device or an electrostatic recording device, and in particular, it selectively applies only non-magnetic toner to a developing area where a latent image carrier formed around a recording drum and a developing roller face each other. The present invention relates to a developing device that can be conveyed to
セレン(Se)等の光導電層よりなる潜像担持体を周囲
に形成した記録ドラムの前記担持体をコロナ放電器等を
用いて一様に帯電させた後、この潜像担持体に画像情報
に対応する露光を行って静電潜像を形成する。更にこの
静電潜像に磁気ブラシ現像器を用いてトナーを付着させ
て現像を行う電子写真記録装置は、複写装置等に広く利
用されている。After uniformly charging the recording drum with a latent image carrier formed around it made of a photoconductive layer such as selenium (Se) using a corona discharger, image information is transferred to the latent image carrier. An electrostatic latent image is formed by performing exposure corresponding to . Furthermore, electrophotographic recording devices that develop the electrostatic latent image by applying toner to it using a magnetic brush developer are widely used in copying devices and the like.
このような記録装置の現像装置に於いて非磁性トナーと
、磁性キャリアとの二成分現像剤を用いて現像を行う場
合、特にカラーの記録を行う際、非磁性トナーのみが選
択的に現像部に搬送されるようにして鮮明なカラー記録
が実施されるようにした現像装置が要望されている。When developing using a two-component developer consisting of non-magnetic toner and magnetic carrier in the developing device of such a recording device, only the non-magnetic toner is selectively transferred to the developing area, especially when performing color recording. There is a need for a developing device that is capable of carrying out clear color recording by being conveyed by the developer.
〔従来の技術〕
従来の二成分現像剤を用いる現像装置の模式図を第2図
に示す。[Prior Art] FIG. 2 shows a schematic diagram of a developing device using a conventional two-component developer.
第2図に示すように従来の現像装置は、磁性粒子よりな
るキャリア1と非磁性の着色樹脂粉末よりなるトナー2
とから構成される現像剤3を収容する現像剤収容容器4
が設けられている。この現像剤収容容器4内には、矢印
A方向に回転する非磁性のスリーブ5と、このスリーブ
5内に内包され、矢印B方向に示すようにスリーブ5の
回転方向と逆方向に回転し、複数の磁極を有する磁気ロ
ーラ6とよりなる現像ローラ7が設けられている。As shown in FIG. 2, the conventional developing device consists of a carrier 1 made of magnetic particles and a toner 2 made of non-magnetic colored resin powder.
A developer storage container 4 containing a developer 3 comprising:
is provided. Inside the developer storage container 4, there is a non-magnetic sleeve 5 that rotates in the direction of arrow A; A developing roller 7 consisting of a magnetic roller 6 having a plurality of magnetic poles is provided.
また現像剤収容容器4には現像ローラ7の表面に付着し
た現像剤3の穂の高さを所定の寸法に規制するための非
磁性の金属板等よりなる穂切りブレード8が設置され、
また現像されずに現像ローラフの表面に付着して収容容
器4に戻ってきた現像剤3を掻き取るための非磁性の樹
脂板等よりなる現像剤掻き取りブレード9が設けられて
いる。Further, a spike cutting blade 8 made of a non-magnetic metal plate or the like is installed in the developer storage container 4 to regulate the height of the spikes of the developer 3 attached to the surface of the developing roller 7 to a predetermined size.
Further, a developer scraping blade 9 made of a non-magnetic resin plate or the like is provided for scraping off the developer 3 that has not been developed but has adhered to the surface of the developing roller rough and returned to the storage container 4.
このような現像装置の動作について説明すると現像剤収
容容器4内に収容されている現像剤3は磁気ローラ6の
磁力によって、スリーブ5の表面に吸着される。ここで
第3図に示すように磁気ローラ6は矢印B方向に沿って
回転し、スリーブ5は矢印入方向に沿って回転している
とすると、トナー2とキャリアlとからなる現像剤3の
穂は、磁気ローラ6の回転に従って自転運動をしながら
、矢印A方向に搬送される。To explain the operation of such a developing device, the developer 3 contained in the developer container 4 is attracted to the surface of the sleeve 5 by the magnetic force of the magnetic roller 6. Here, as shown in FIG. 3, assuming that the magnetic roller 6 rotates along the direction of the arrow B and the sleeve 5 rotates along the direction of the arrow, the developer 3 consisting of the toner 2 and the carrier L is The ears are conveyed in the direction of arrow A while performing rotational movement according to the rotation of the magnetic roller 6.
前記した第2図に示すようにスリーブ5上で穂状に吸着
された現像剤3が、矢印Aに示すスリーブ5の回転方向
に沿って移動し、現像剤収容容器4の出口に設けられた
穂切りブレード8によって、所定の厚さに規定され、更
に矢印Aに沿って搬送される。そして潜像担持体10が
表面に形成された記録ドラム1)に、前記搬送された現
像剤3が接触する現像領域で、記録ドラム1)上に形成
された静電潜像にトナー2が供給付着されて現像が行わ
れる。As shown in FIG. 2, the developer 3 adsorbed in the form of a spike on the sleeve 5 moves along the direction of rotation of the sleeve 5 shown by the arrow A, and moves to the spike provided at the outlet of the developer storage container 4. It is defined to a predetermined thickness by the cutting blade 8, and is further conveyed along arrow A. The toner 2 is then supplied to the electrostatic latent image formed on the recording drum 1) in the development area where the transported developer 3 comes into contact with the recording drum 1) on which the latent image carrier 10 is formed. It is attached and developed.
現像終了後の現像剤3は更に現像ローラ7上を搬送され
て現像収容容器4内に回収される。更に現像剤3は現像
剤掻き取りブレード9によって現像ローラ7より剥がさ
れ、図示しない攪拌手段により攪拌され、現像によって
消費された量のトナー2が補給され、その後前記したの
と同様な動作を現像装置が繰り返す。After the development is completed, the developer 3 is further conveyed on the developing roller 7 and collected into the developer storage container 4. Further, the developer 3 is peeled off from the developing roller 7 by a developer scraping blade 9, stirred by a stirring means (not shown), and the amount of toner 2 consumed by development is replenished, and then the same operation as described above is carried out for development. The device repeats.
ところが、このような現像装置では、現像剤のトナー濃
度が記録品位に与える影響が大きく、トナー濃度が高い
と背景部の地汚れを生し、トナー濃度が低下すると画像
が薄くなったり、現像されなぐなり、更にはキャリアl
の付着が起こる。However, in such a developing device, the toner concentration of the developer has a large effect on the recording quality; high toner concentration causes background smearing, and low toner concentration causes images to become pale or undeveloped. Nagunari, and even carrier l
adhesion occurs.
そのため、このような装置では、トナー濃度センサを設
けてトナー濃度を管理すると共に、トナー濃度に応じて
トナーの供給を行わねばならず、現像装置の維持管理が
煩雑で問題となる。Therefore, in such an apparatus, a toner concentration sensor must be provided to manage the toner concentration, and toner must be supplied in accordance with the toner concentration, making maintenance and management of the developing device complicated and problematic.
更にこのような二成分現像剤では、記録ドラム1)に現
像剤3を接触させて現像するため、記録ドラム1)の表
面はキャリア1によって摩擦され、傷が発生する問題が
ある。Furthermore, in such a two-component developer, since development is carried out by bringing the developer 3 into contact with the recording drum 1), there is a problem in that the surface of the recording drum 1) is rubbed by the carrier 1 and scratches occur.
更に本発明者等が以前に提案したように、記録ドラム1
)が一回転する間に、潜像形成および現像工程を複数回
繰り返すカラー記録の場合に於いて、第2段以降の現像
時に、それ以前に形成されているトナー像を破壊したり
、或いは混色を起こすことが避けられなかった。Furthermore, as previously proposed by the inventors, the recording drum 1
) In the case of color recording, in which latent image formation and development steps are repeated multiple times during one rotation, the previously formed toner image may be destroyed during the second and subsequent stages of development, or color mixing may occur. It was inevitable that this would happen.
尚、このようなカラー記録に於いて、第2段以降の現像
に一成分磁性トナーを用いて現像する方法を、本発明者
等は以前に提案している。Incidentally, in such color recording, the present inventors have previously proposed a method in which a one-component magnetic toner is used for the second and subsequent stages of development.
然し、上記した一成分磁性トナーは着色樹脂粉末に磁性
粉末を添加した構成をとっているため、鮮明なカラー記
録が実現できな、い問題がある。However, since the above-mentioned one-component magnetic toner has a structure in which magnetic powder is added to colored resin powder, there is a problem in that clear color recording cannot be realized.
本発明の現像装置は、非磁性スリーブ25とこの非磁性
スリーブ25に内包され、非磁性スリーブ25と共に回
転する磁気ローラ23と、この現像剤収容容器21の現
像剤搬出口部33に現像ローラ28と対向して磁性体の
現像剤流れ規制手段22を設け、この現像ローラ28の
非磁性スリーブ25の回転方向は、現像剤24が現像剤
搬出口部33より潜像担持体31に向かう方向とする。The developing device of the present invention includes a non-magnetic sleeve 25, a magnetic roller 23 that is enclosed in the non-magnetic sleeve 25 and rotates together with the non-magnetic sleeve 25, and a developing roller 28 that is disposed at a developer outlet 33 of the developer storage container 21. A developer flow regulating means 22 made of a magnetic material is provided opposite to the developer flow regulating means 22 , and the rotation direction of the non-magnetic sleeve 25 of the developing roller 28 is the direction in which the developer 24 is directed from the developer outlet portion 33 toward the latent image carrier 31 . do.
本発明の現像装置は、現像剤収容容器21の、現像剤出
口に磁性体で形成された板状の現像剤流れ規制板22を
設けることで、磁気ローラ23の回転によって磁気ロー
ラ23を構成する磁極が変化しても、常に流れ規制板2
2に磁気ローラ23からの磁力線が集束するようにして
、トナー26とキャリア27よりなる二成分の現像剤2
4で形成される稲穂状の磁気ブラシが磁気ローラ23の
磁極と流れ規制板22の間に形成されるようにし、この
磁気ブラシによって流れ規制板22を通過してキャリア
27が搬送されないようにし、トナー26のみが現像領
域に到達するようにしたものである。In the developing device of the present invention, a plate-shaped developer flow regulating plate 22 made of a magnetic material is provided at the developer outlet of the developer storage container 21, so that the magnetic roller 23 is configured by the rotation of the magnetic roller 23. Even if the magnetic pole changes, the flow regulating plate 2 remains constant.
A two-component developer 2 consisting of toner 26 and carrier 27 is produced so that the lines of magnetic force from the magnetic roller 23 are focused on 2.
4 is formed between the magnetic pole of the magnetic roller 23 and the flow regulating plate 22, and the carrier 27 is prevented from being conveyed past the flow regulating plate 22 by this magnetic brush. Only the toner 26 reaches the developing area.
またこの時、スリーブ25上の非磁性トナー26は、磁
性キャリア27との摩擦帯電や、スリーブ25との摩擦
帯電によって電荷を持ち、鏡像力で現像ローラ28表面
に非磁性トナー26層を形成するようにしたものである
。At this time, the non-magnetic toner 26 on the sleeve 25 has an electric charge due to frictional charging with the magnetic carrier 27 and frictional charging with the sleeve 25, and forms a layer of non-magnetic toner 26 on the surface of the developing roller 28 due to image force. This is how it was done.
以下、図面を用いて本発明の一実施例につき詳細に説明
する。Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
第1図に示すように、本発明の現像装置は非磁性の着色
樹脂粉末よりなるトナー26と磁性粉末よりなるキャリ
ア27とを混合した二成分の現像剤24が収容されてい
る現像剤収容容器21の現像剤出口部33で、非磁性の
スリーブ25とそれに内包された磁気ローラ23とから
なる現像ローラ28に近接した位置で、磁性体よりなる
現像剤の流れ規制板22を設けている。As shown in FIG. 1, the developing device of the present invention includes a developer container containing a two-component developer 24, which is a mixture of a toner 26 made of non-magnetic colored resin powder and a carrier 27 made of magnetic powder. At the developer outlet 33 of No. 21, a developer flow regulating plate 22 made of a magnetic material is provided at a position close to a developing roller 28 made of a non-magnetic sleeve 25 and a magnetic roller 23 contained therein.
このような本発明の現像装置の動作について説明する。The operation of such a developing device of the present invention will be explained.
前記したトナー26とキャリア27とからなる二成分の
現像剤24は、磁気ローラ23の磁力により現像ローラ
28の表面に吸着される。この時、磁気ローラ23と非
磁性スリーブ25は共に矢印C,Dに示すように反時計
方向に回転し、現像剤24も反時計方向に搬送される。The two-component developer 24 consisting of the toner 26 and carrier 27 described above is attracted to the surface of the developing roller 28 by the magnetic force of the magnetic roller 23 . At this time, both the magnetic roller 23 and the non-magnetic sleeve 25 rotate counterclockwise as shown by arrows C and D, and the developer 24 is also conveyed counterclockwise.
ここで、現像剤24は磁気ローラ23の回転方向と同一
の方向に搬送されるため、現像剤24の磁気ローラ23
によって搬送される速度より、現像剤24のスリーブ2
5によって搬送される速度の方を大きく設定しておく。Here, since the developer 24 is conveyed in the same direction as the rotational direction of the magnetic roller 23, the magnetic roller 23 of the developer 24
The speed at which the developer 24 is transported by the sleeve 2
5, the conveyance speed is set higher.
この結果、現像ローラ28の表面に吸着された現像剤2
4は、磁気ローラ23の磁極の移動で自転運動をしなが
ら、非磁性スリーブ25の回転方向に搬送される。また
現像剤24は自転運動とスリーブ25との摩擦によって
トナー26とキャリア27はそれぞれ逆極性の電荷を持
つようになる。そして流れ規制板22に到達すると、流
れ規制板22は磁性体であり磁気ローラ23の磁極と逆
極性となるため、現像剤24はスリーブ25表面と流れ
規制板22の間を磁気ブラシでつなぐようになる。As a result, the developer 2 adsorbed on the surface of the developing roller 28
4 is conveyed in the rotational direction of the non-magnetic sleeve 25 while performing rotational movement due to the movement of the magnetic pole of the magnetic roller 23. Further, due to the rotational movement of the developer 24 and friction with the sleeve 25, the toner 26 and the carrier 27 each have charges of opposite polarity. When the developer 24 reaches the flow regulating plate 22, the flow regulating plate 22 is a magnetic material and has a polarity opposite to that of the magnetic roller 23. become.
また現像剤24は流れ規制板22の個所で滞留しはじめ
、遂には流れ規制板22に沿って上部の方向に移動し、
途中から現像剤24の表層部を滑って現像剤収容容器2
1の底部に到達する。Further, the developer 24 begins to stay at the flow regulating plate 22, and finally moves upward along the flow regulating plate 22.
The developer container 2 slides on the surface layer of the developer 24 from the middle.
Reach the bottom of 1.
また現像剤24が流れ規制板22とスリーブ25間に磁
気ブラシを形成すると、非磁性トナー26は鏡像力で非
磁性スリーブ25に静電的に付着する。Further, when the developer 24 forms a magnetic brush between the flow regulating plate 22 and the sleeve 25, the non-magnetic toner 26 electrostatically adheres to the non-magnetic sleeve 25 due to image force.
尚、非磁性トナー26の非磁性スリーブ25への付着は
流れ規制板22に到達する迄の搬送途中でも起こる。そ
して非磁性スリーブ25の回転に従って現像領域に搬送
される。現像ローラ28と記録ドラム29とが対向した
現像領域で、非磁性スリーブ25と記録ドラム29間に
現像バイアス用電源32で現像バイアスを印加しておけ
ば、記録ドラム29上の周囲の潜像担持体31に形成さ
れた静電潜像にトナー26が付着して現像が行われる。Incidentally, the non-magnetic toner 26 adheres to the non-magnetic sleeve 25 even during transportation until it reaches the flow regulating plate 22 . Then, as the non-magnetic sleeve 25 rotates, it is transported to the developing area. If a developing bias is applied between the non-magnetic sleeve 25 and the recording drum 29 by the developing bias power source 32 in the developing region where the developing roller 28 and the recording drum 29 face each other, the peripheral latent image on the recording drum 29 will be retained. The toner 26 adheres to the electrostatic latent image formed on the body 31 and development is performed.
現像に用いられなかったトナ一層は更に搬送されて収容
容器21に到達する。The one layer of toner not used for development is further transported and reaches the storage container 21.
尚、図示していないが現像によってトナーが消費される
ため、公知のトナー供給系によって新たなトナーを補充
するようにしても良い。Although not shown, since toner is consumed during development, new toner may be replenished by a known toner supply system.
本実施例によれば、スリーブ25と共に磁気ローラ23
を共に回転させているため、現像剤の磁気ブラシの自転
運動が起こり、トナーとキャリアとの攪拌が非磁性スリ
ーブのみの現像剤搬送時に比べ充分に行われる。この結
果、搬送中にトナーは短時間で確実に帯電され、非磁性
スリーブ表面へのトナ一層の形成が容易に行われる。つ
まり非磁性スリーブ25のみの回転による現像剤の搬送
方式では困難である高速記録への適用が可能となる。According to this embodiment, together with the sleeve 25, the magnetic roller 23
Since the developer is rotated together, the magnetic brush of the developer rotates on its own axis, and the toner and carrier are more thoroughly stirred than when the developer is conveyed using only a non-magnetic sleeve. As a result, the toner is reliably charged in a short time during transportation, and a layer of toner can be easily formed on the surface of the nonmagnetic sleeve. In other words, it is possible to apply the present invention to high-speed recording, which is difficult to achieve with a developer conveyance system based on the rotation of only the non-magnetic sleeve 25.
更に非磁性スリーブ25の回転による現像剤搬送速度が
、磁気ローラ23による搬送速度より大きいため、現像
剤24は収容容器21の現像剤搬送入り口部30に滞留
することがなく、この入り口部30より外部にもれ出す
こともない。Furthermore, since the developer conveyance speed due to the rotation of the non-magnetic sleeve 25 is higher than the conveyance speed due to the magnetic roller 23, the developer 24 does not stay at the developer conveyance entrance portion 30 of the storage container 21, and is transferred from this entrance portion 30. It will not leak outside.
尚、本実施例では磁気ローラ23と非磁性スリーブ25
とも同一方向(反時計方向)回転で説明したがトナ一層
を搬送するための非磁性スリーブ25が反時計方向に回
転しておれば良く、磁気ローラ23の回転方向は問わな
い。また現像剤収容容器21内に於ける現像剤24の搬
送方向も反時計方向である必要はなく、この搬送方向は
磁気ローラ23による搬送方向と速度、および非磁性ス
リーブ25による搬送方向と速度との兼ね合いで決まる
。In this embodiment, the magnetic roller 23 and the non-magnetic sleeve 25 are
Although the description has been made with both rotating in the same direction (counterclockwise), the rotation direction of the magnetic roller 23 does not matter as long as the non-magnetic sleeve 25 for conveying one layer of toner rotates counterclockwise. Furthermore, the direction in which the developer 24 is conveyed in the developer storage container 21 does not necessarily have to be counterclockwise; It is determined by the balance between
更に本実施例の他に、磁気ローラ23のみを固定させて
も可能である。この場合にはスリーブ25と現像剤流れ
規制板22の間に磁気ブラシが形成されるように板22
に対向する位置に磁気ローラ23の磁極が位置するよう
に調整すると良い。Furthermore, in addition to this embodiment, it is also possible to fix only the magnetic roller 23. In this case, the plate 22 is arranged so that a magnetic brush is formed between the sleeve 25 and the developer flow regulating plate 22.
It is preferable to adjust the magnetic pole of the magnetic roller 23 so that it is located at a position facing the .
また現像バイアス電圧は直流でも交流でもいずれでも良
い。Further, the developing bias voltage may be either direct current or alternating current.
更に現像剤搬送入り口部32より現像剤24が漏れぬよ
うにするため、現像剤収容容器21と現像ローラ28と
の空隙を現像剤24中のキャリア27の粒径以下とする
と更に効果的である。Furthermore, in order to prevent the developer 24 from leaking from the developer transport entrance 32, it is more effective to make the gap between the developer storage container 21 and the developing roller 28 smaller than the particle size of the carrier 27 in the developer 24. .
また現像剤収容容器21に現像終了後、搬送されてきた
トナーは強制的に掻き落とすようにしても良い。Further, the toner conveyed to the developer storage container 21 after completion of development may be forcibly scraped off.
また磁性体より形成されている流れ規制板22を磁極を
持たすようにしても良いし、また流れ規制板22と非磁
性スリーブ25間にバイアス電圧を印加する構造をとっ
ても良い。Further, the flow regulating plate 22 made of a magnetic material may have a magnetic pole, or a structure may be adopted in which a bias voltage is applied between the flow regulating plate 22 and the non-magnetic sleeve 25.
本発明の現像装置によれば、流れ規制板で二成分現像剤
のキャリアのみを確実に選択的にせき止めることかでき
、現像領域にはトナ一層のみを搬送することができるの
で、装置が簡単なものとなり低コストの装置が得られる
。According to the developing device of the present invention, only the carrier of the two-component developer can be reliably and selectively blocked by the flow regulating plate, and only one layer of toner can be transported to the developing area, so that the device is simple. Therefore, a low-cost device can be obtained.
また現像領域にはキャリアがないため、記録ドラムの表
面を傷つけることがなく、トナ一層のみによる現像のた
めソフトな現像が得られ、カラー記録に用いると鮮明で
像破壊や、混色のない良好な記録を行い得るといった効
果がある。In addition, since there is no carrier in the development area, the surface of the recording drum will not be damaged, and since development is performed using only a single layer of toner, soft development can be obtained, and when used for color recording, it is clear and has good quality without image destruction or color mixing. This has the effect of being able to record.
更に磁気ローラを回転させているため、トナーの攪拌が
充分にでき、トナーの帯電が短時間で確実に容易に行う
ことができ、高速記録が可能となる効果がある。Furthermore, since the magnetic roller is rotated, the toner can be sufficiently agitated, the toner can be charged easily and reliably in a short time, and high-speed recording is possible.
第1図は本発明の現像装置を示す模式図、第2図は従来
の現像装置を示す模式図、第3図は現像装置に於ける現
像剤の状態を示す模式図である。
図に於いて、
21は現像剤収容容器、22は流れ規制板、23は磁気
ローラ、24は現像剤、25はスリーブ、26はトナー
、27はキャリア、28は現像ローラ、29は記録ドラ
拳、30は現像剤入り口部、31は潜像担持体、32は
現像バイアス電源、33は現像剤搬出口部、Cは磁気ロ
ーラの回転方向を示す矢印、Dはスリーブの回転方向を
示す矢印である。
2ト金θ月0Tシf水褒置の4莞六:口笛 1 図
イ疋シ1−リffブjモ七(覆・1)−り1デぐrz第
2図FIG. 1 is a schematic diagram showing a developing device of the present invention, FIG. 2 is a schematic diagram showing a conventional developing device, and FIG. 3 is a schematic diagram showing the state of developer in the developing device. In the figure, 21 is a developer storage container, 22 is a flow regulating plate, 23 is a magnetic roller, 24 is a developer, 25 is a sleeve, 26 is a toner, 27 is a carrier, 28 is a developing roller, and 29 is a recording drum fist. , 30 is a developer inlet, 31 is a latent image carrier, 32 is a developing bias power source, 33 is a developer outlet, C is an arrow indicating the rotation direction of the magnetic roller, and D is an arrow indicating the rotation direction of the sleeve. be. 2 t gold θ month 0 t shif water reward 4 kan 6: whistle 1 fig. 1 - ri ff bj mo 7 (cover 1) - ri 1 deg rz fig. 2
Claims (3)
像剤を収容する現像剤収容容器と、回転可能な非磁性ス
リーブおよびこれに内包された磁気ローラよりなる現像
ローラを備え、 該非磁性スリーブ、および磁気ローラの一方、或いは両
方を回転させて前記現像ローラの表面に沿って前記二成
分現像剤を搬送する現像装置に於いて、 回転可能な非磁性スリーブ(25)と該非磁性スリーブ
(25)に内包される磁気ローラ(23)とからなる現
像ローラ(28)と、 前記現像剤収容容器(21)の現像剤搬出口部(33)
に現像ローラ(28)と対向して磁性体の現像剤流れ規
制手段(22)を設け、 前記現像ローラ(28)の非磁性スリーブ(25)の回
転方向は、現像剤(24)が現像剤搬出口部(33)よ
り記録ドラム(29)の表面の潜像担持体(31)に向
かう方向としたことを特徴とする現像装置。(1) A developer storage container containing a two-component developer consisting of a magnetic carrier and a non-magnetic toner, a developing roller consisting of a rotatable non-magnetic sleeve and a magnetic roller included therein, the non-magnetic sleeve; and a developing device that transports the two-component developer along the surface of the developing roller by rotating one or both of the magnetic rollers, the rotatable non-magnetic sleeve (25) and the non-magnetic sleeve (25). a developing roller (28) consisting of a magnetic roller (23) contained in the developer container (21); and a developer outlet portion (33) of the developer storage container (21).
A developer flow regulating means (22) made of a magnetic material is provided opposite to the developing roller (28), and the direction of rotation of the non-magnetic sleeve (25) of the developing roller (28) is such that the developer (24) A developing device characterized in that the direction is directed from an exit port (33) toward a latent image carrier (31) on the surface of a recording drum (29).
3)をスリーブ(25)と共に回転させるようにしたこ
とを特徴とする特許請求の範囲第(1)項に記載の現像
装置。(2) The magnetic roller (2) of the developing roller (28)
3) The developing device according to claim 1, wherein the developing device is configured to rotate together with the sleeve (25).
3)のみを固定させるようにしたことを特徴とする特許
請求の範囲第(1)項に記載の現像装置。(3) The magnetic roller (2) of the developing roller (28)
3) The developing device according to claim 1, wherein only the portion 3) is fixed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21312385A JPS6271984A (en) | 1985-09-25 | 1985-09-25 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21312385A JPS6271984A (en) | 1985-09-25 | 1985-09-25 | Developing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6271984A true JPS6271984A (en) | 1987-04-02 |
Family
ID=16633955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21312385A Pending JPS6271984A (en) | 1985-09-25 | 1985-09-25 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6271984A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6041069A (en) * | 1983-08-16 | 1985-03-04 | Canon Inc | Forming device for thin developer layer |
-
1985
- 1985-09-25 JP JP21312385A patent/JPS6271984A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6041069A (en) * | 1983-08-16 | 1985-03-04 | Canon Inc | Forming device for thin developer layer |
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