JPH04362977A - Electrostatic latent image developing device - Google Patents
Electrostatic latent image developing deviceInfo
- Publication number
- JPH04362977A JPH04362977A JP3268583A JP26858391A JPH04362977A JP H04362977 A JPH04362977 A JP H04362977A JP 3268583 A JP3268583 A JP 3268583A JP 26858391 A JP26858391 A JP 26858391A JP H04362977 A JPH04362977 A JP H04362977A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- end side
- stirring
- width direction
- rotating shaft
- 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 claims abstract description 49
- 239000002245 particle Substances 0.000 claims description 52
- 238000005192 partition Methods 0.000 claims description 27
- 238000005086 pumping Methods 0.000 claims description 13
- 230000032258 transport Effects 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 37
- 238000013019 agitation Methods 0.000 description 16
- 238000011144 upstream manufacturing Methods 0.000 description 9
- 108091008695 photoreceptors Proteins 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、静電複写機等において
使用される静電潜像現像装置、更に詳しくはキヤリア粒
子及びトナー粒子から成る所謂二成分現像剤を使用する
静電潜像現像装置に関する。[Industrial Application Field] The present invention relates to an electrostatic latent image developing device used in an electrostatic copying machine, etc., and more specifically to an electrostatic latent image developing device using a so-called two-component developer consisting of carrier particles and toner particles. Regarding equipment.
【０００２】0002
【従来の技術】二成分現像剤を使用する静電潜像現像装
置の典型例としては、特開昭５７−１９０９７１号公報
に開示されている形態の静電潜像現像装置を挙げること
ができる。この静電潜像現像装置はキヤリア粒子及びト
ナー粒子から成る現像剤を収容する現像容器を含んでい
る。現像容器内には現像剤適用手段及び現像剤攪拌手段
が配設されている。所定方向に回転せしめられる円筒状
スリーブ部材とこのスリーブ部材内に配設された磁石か
ら構成されているのが好都合である現像剤適用手段は、
現像剤汲み上げ域において現像容器内の現像剤の一部を
その表面に保持し、かかる現像剤を現像域に運んで静電
潜像に施し、静電潜像をトナー像に現像する。現像剤適
用手段の表面に保持されて運ばれる現像剤の移動方向に
見て現像域よりも下流で且つ現像剤汲み上げ域よりも上
流には現像剤剥離域が存在し、現像剤攪拌手段はこの現
像剤剥離域と現像剤汲み上げ域の上流端部とに関連せし
めて配設されている。現像剤汲み上げ域よりも下流で且
つ現像域よりも上流には穂切域が存在し、この穂切域に
おいて現像剤適用手段の表面から過剰の現像剤を除去す
る穂切手段が配設されている。穂切手段と現像剤攪拌手
段との間には仕切板が配設されていて、現像剤適用手段
の表面から穂切手段の作用によって除去された現像剤は
、仕切板の上面を通して現像剤攪拌手段に導かれる。2. Description of the Related Art A typical example of an electrostatic latent image developing device using a two-component developer is an electrostatic latent image developing device disclosed in Japanese Patent Application Laid-open No. 57-190971. . The electrostatic latent image development device includes a developer container containing a developer consisting of carrier particles and toner particles. A developer applying means and a developer stirring means are arranged within the developer container. The developer application means advantageously comprises a cylindrical sleeve member which is rotatable in a predetermined direction and a magnet disposed within the sleeve member.
A portion of the developer in the developer container is retained on its surface in the developer pumping zone, and the developer is conveyed to the development zone where it is applied to the electrostatic latent image to develop the electrostatic latent image into a toner image. A developer stripping area exists downstream of the developing area and upstream of the developer pumping area when viewed in the direction of movement of the developer held and carried on the surface of the developer applying means. It is disposed in relation to the developer stripping area and the upstream end of the developer pumping area. A panicle cutting region is present downstream of the developer pumping region and upstream of the development region, and a grain cutting means is disposed in the panicle cutting region to remove excess developer from the surface of the developer applying means. There is. A partition plate is disposed between the spike cutting means and the developer stirring means, and the developer removed from the surface of the developer application means by the action of the spike cutting means passes through the upper surface of the partition plate and is stirred. guided by means.
【０００３】上記形態の静電潜像現像装置においては、
現像剤攪拌手段によってキヤリア粒子とトナー粒子とが
充分良好に攪拌せしめられてトナー粒子が所要極性に摩
擦帯電せしめられることに加えて、現像剤が幅方向に適
宜混合せしめられて幅方向に均質化せしめられることが
重要である。そこで、上記特開昭５７−１９０９７１号
公報に開示されている静電潜像現像装置においては、上
記仕切板の上面に幅方向に間隔をおいて複数個の案内突
条を配設し、かかる案内突条の各々を現像剤攪拌手段に
向けて幅方向他端側（後端側）から片端側（前端側）に
傾斜せしめている。更に、仕切板と現像剤攪拌手段との
間に現像剤移動機構を配設している。この現像剤移動機
構は幅方向に延在する管状部材とこの管状部材内に配設
されている螺旋羽根を含んでおり、管状部材の片端側上
面には入口が他端側下面には出口が形成されている。現
像剤適用手段の表面から除去されて仕切板上に移動せし
められた現像剤は、傾斜して延在する上記案内突条の案
内作用によって幅方向他端側から片端側に偏流せしめら
れる。そして、現像剤移送機構における管状部材の入口
から管状部材内に流入した現像剤は、回転駆動せしめら
れる螺旋羽根によって他端側に移動せしめられ、管状部
材の出口から排出されて現像剤攪拌手段に流下せしめら
れる。かくして、現像剤が幅方向に混合せしめられる。In the electrostatic latent image developing device of the above configuration,
In addition to sufficiently stirring the carrier particles and toner particles by the developer stirring means to triboelectrically charge the toner particles to the required polarity, the developer is appropriately mixed in the width direction and homogenized in the width direction. It is important to be disciplined. Therefore, in the electrostatic latent image developing device disclosed in JP-A-57-190971, a plurality of guide protrusions are arranged at intervals in the width direction on the upper surface of the partition plate. Each of the guide protrusions is inclined from the other end (rear end) in the width direction toward one end (front end) toward the developer stirring means. Further, a developer moving mechanism is disposed between the partition plate and the developer stirring means. This developer moving mechanism includes a tubular member extending in the width direction and a spiral blade disposed within the tubular member. The tubular member has an inlet on the upper surface at one end and an outlet on the lower surface at the other end. It is formed. The developer removed from the surface of the developer applying means and moved onto the partition plate is deflected from the other end in the width direction to one end by the guiding action of the guide ridge extending at an angle. The developer that has flowed into the tubular member from the inlet of the tubular member in the developer transfer mechanism is moved to the other end side by a spiral blade that is rotationally driven, and is discharged from the outlet of the tubular member and sent to the developer stirring means. It is forced to flow down. In this way, the developer is mixed in the width direction.
【０００４】0004
【発明が解決しようとする課題】而して、特開昭５７−
１９０９７１号公報に開示されている上述した通りの静
電潜像現像装置には、（１）仕切板と現像剤攪拌手段と
の間に現像剤移動機構を配設することが必要であり、こ
の現像剤移送機構の配設に起因して装置が大型化する、
（２）現像剤移動機構における管状部材の片端側上面に
形成されている入口から管状部材内に充分良好に現像剤
が流入せず、現像剤移送機構が所要通りに機能しない、
という解決すべき問題がある。[Problem to be solved by the invention]
The above-mentioned electrostatic latent image developing device disclosed in Japanese Patent No. 190971 requires (1) disposing a developer moving mechanism between the partition plate and the developer stirring means; The size of the device increases due to the arrangement of the developer transport mechanism.
(2) The developer does not flow into the tubular member properly from the inlet formed on the top surface of one end of the tubular member in the developer transfer mechanism, and the developer transfer mechanism does not function as required.
There is a problem that needs to be solved.
【０００５】本発明は上記事実に鑑みてなされたもので
あり、その技術的解決課題は、装置を大型化せしめるこ
となく現像剤を幅方向に充分良好に混合することができ
る改良された静電潜像現像装置を提供することである。The present invention has been made in view of the above facts, and its technical problem is to provide an improved electrostatic device that can sufficiently mix developer in the width direction without increasing the size of the device. An object of the present invention is to provide a latent image developing device.
【０００６】[0006]
【課題を解決するための手段】上記技術的解決課題を達
成するために、本発明においては、上面に傾斜案内突条
が形成されている仕切板上を流動することによって他端
側から片端側に偏流された現像剤を片端側から他端側に
移動せしめるために現像剤移動羽根を現像剤攪拌手段内
に組み込み、そして更に、現像剤移動羽根の片端側に関
連せしめて、現像剤を半径方向内方に移動せしめて現像
剤移動羽根に送給する案内突条を有する円形端板を配設
し、現像剤移動羽根の他端側に関連せしめて、現像剤を
半径方向外方に移動せしめて現像剤移動羽根から排出す
る案内突条を有する円形端板を配設する。[Means for Solving the Problems] In order to achieve the above-mentioned technical problem, in the present invention, the fluid flows from the other end to one end by flowing on a partition plate having an inclined guide protrusion formed on the upper surface. A developer moving blade is incorporated into the developer agitating means in order to move the developer biased from one end to the other. A circular end plate having a guide protrusion that is moved inward in the direction to feed the developer to the developer moving blade is disposed, and is associated with the other end of the developer moving blade to move the developer radially outward. At least a circular end plate having a guide ridge for discharging the developer from the developer moving blade is provided.
【０００７】即ち、本発明によれば、上記技術的解決課
題を達成するために、キヤリア粒子及びトナー粒子から
成る現像剤を収容する現像容器と、現像剤汲み上げ域に
おいて該現像容器内の現像剤の一部を表面に保持し、か
かる現像剤を現像域に運ぶ現像剤適用手段と、該現像容
器内の現像剤を攪拌する現像剤攪拌手段と、該現像剤適
用手段の表面から除去された現像剤を該現像剤攪拌手段
に導く仕切板とを具備し、該仕切板の上面には幅方向に
間隔をおいて複数個の案内突条が設けられており、該案
内突条の各々は該現像剤攪拌手段に向かって幅方向他端
側から片端側に傾斜せしめられていて、該現像剤適用手
段の表面から除去されて該仕切板上を流動せしめられる
現像剤を該他端側から該片端側に移動せしめる静電潜像
現像装置において、該現像剤攪拌手段は幅方向に延びる
回転軸部と、該回転軸部に対して同心状に配設された管
状部と、該管状部の周表面を周方向に間隔をおいて幅方
向に延びる複数枚の攪拌羽根と、該回転軸部と該管状部
との間隙に配設され該片端側から該間隙に導入された現
像剤を該間隙を通して該他端側に移動せしめるための現
像剤移動羽根と、該管状部の両端に対して夫々幅方向外
側に間隔をおいて該回転軸部の両端部に配設された一対
の円形端板とを含み、該片端側に位置する該円形端板の
内面には、現像剤を半径方向内方に移動せしめて該回転
軸部と該管状部との間の該間隙に導入するための複数個
の案内突条が形成され、該他端側に位置する該円形端板
の内面には、現像剤を半径方向外方に移動せしめて該回
転軸部と該管状部との間の該間隙から導出するための複
数個の案内突条が形成されている、ことを特徴とする静
電潜像現像装置が提供される。That is, according to the present invention, in order to achieve the above-mentioned technical problem, there is provided a developer container containing a developer composed of carrier particles and toner particles, and a developer in the developer container in a developer pumping area. a developer application means for retaining a portion of the developer on the surface and conveying the developer to the development area; a developer agitation means for stirring the developer in the developer container; a partition plate that guides the developer to the developer stirring means, and a plurality of guide protrusions are provided on the upper surface of the partition plate at intervals in the width direction, each of the guide protrusions The developer stirring means is inclined from the other end in the width direction to one end, and the developer that is removed from the surface of the developer applying means and caused to flow on the partition plate is introduced from the other end. In the electrostatic latent image developing device that is moved toward one end, the developer stirring means includes a rotating shaft portion extending in the width direction, a tubular portion disposed concentrically with respect to the rotating shaft portion, and the tubular portion. a plurality of agitating blades extending in the width direction at intervals in the circumferential direction of the circumferential surface of the rotary shaft, and a plurality of agitating blades arranged in a gap between the rotating shaft portion and the tubular portion, and a developer introduced into the gap from one end side. developer moving blades for moving the developer toward the other end through the gap; and a pair of circular blades disposed at both ends of the rotating shaft part at a distance outwardly in the width direction with respect to both ends of the tubular part. and an inner surface of the circular end plate located on one end side for moving the developer radially inward and introducing it into the gap between the rotating shaft portion and the tubular portion. A plurality of guide protrusions are formed on the inner surface of the circular end plate located on the other end side, for moving the developer radially outward to move the developer between the rotating shaft portion and the tubular portion. There is provided an electrostatic latent image developing device characterized in that a plurality of guide protrusions are formed to lead out from the gap.
【０００８】[0008]
【作用】本発明の静電潜像現像装置においては、現像剤
攪拌手段における回転軸部と管状部との間の間隙内に現
像剤移動羽根が配設されている故に、現像剤移動羽根の
存在に起因して装置が大型化することがない。管状部の
両端に対して間隔をおいて回転軸部の両端部には一対の
円形端板が配設されており、片端側の円形端板の内面に
は現像剤を半径方向内方に移動せしめて上記間隙に、従
って現像剤移動羽根に導入する案内突条が形成され、他
端側の円形端板の内面には現像剤を半径方向外方に移動
せしめて上記間隙から、従って現像剤移動羽根から導出
する案内突条が形成されている故に、現像剤移動羽根に
充分良好に現像剤が送給され、そしてまた現像剤移動羽
根から充分良好に現像剤が送出され、かくして現像剤移
動羽根によって片端側から他端側に向けて充分良好に現
像剤が移動せしめられる。[Function] In the electrostatic latent image developing device of the present invention, since the developer moving blade is disposed in the gap between the rotating shaft portion and the tubular portion of the developer stirring means, the developer moving blade is The device does not become larger due to its presence. A pair of circular end plates are arranged at both ends of the rotating shaft part at a distance from both ends of the tubular part, and the inner surface of the circular end plate at one end is used to move the developer radially inward. At least a guide ridge is formed in the gap, and thus guides the developer into the developer moving blade, and a guide ridge is formed on the inner surface of the circular end plate at the other end to move the developer radially outward from the gap, so that the developer is introduced into the gap. Since the guide ridges leading out from the moving blades are formed, the developer is sufficiently well fed to the developer moving blades, and the developer is also fed sufficiently well from the developer moving blades, thus preventing the developer from moving. The developer is sufficiently moved by the blades from one end side to the other end side.
【０００９】[0009]
【実施例】以下、本発明に従って構成された静電潜像現
像装置の好適実施例について、添付図面を参照して更に
詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an electrostatic latent image developing device constructed according to the present invention will be described in more detail with reference to the accompanying drawings.
【００１０】図１、図２及び図３を参照して説明すると
、図示の静電潜像現像装置２は、前後方向（図１におい
て紙面に垂直な方向、図２において左右方向）に間隔を
置いて配設された前壁４及び後壁６（図２参照）、凹状
底壁８並びに側壁１０によって規定された現像ハウジン
グ１２を具備している。この現像ハウジング１２の下部
は、キヤリア粒子及びトナー粒子から成る所謂二成分現
像剤１４を収容する現像容器１６を規定している。Referring to FIGS. 1, 2, and 3, the electrostatic latent image developing device 2 shown has an interval in the front-rear direction (direction perpendicular to the plane of the paper in FIG. 1, horizontal direction in FIG. 2). It includes a developer housing 12 defined by spaced apart front and rear walls 4 and 6 (see FIG. 2), a concave bottom wall 8, and side walls 10. The lower part of developer housing 12 defines a developer container 16 containing a so-called two-component developer 14 consisting of carrier particles and toner particles.
【００１１】現像ハウジング１２内には、現像剤適用手
段１８が配設されている。図示の実施例における現像剤
適用手段１８は、回転駆動される円筒スリーブ部材２２
と、このスリーブ部材２２内に配設された静止永久磁石
２４から構成されている。円筒スリーブ部材２２の両端
には円板状の端板２６（図３において片方のみ示す）が
装着され、この端板２６の各々には、夫々、前後方向（
言い換えると、現像装置２の幅方向）に延びる支持軸２
８（幅方向に実質上水平に延びる回転軸線を構成する）
が固定され、かかる支持軸２８が上記前壁４及び上記後
壁６間に回転自在に支持されている。この支持軸２８の
片方（前後方向後方に位置する支持軸）には連結手段（
図示せず）が装着され、かかる連結手段が適宜の手段を
介して静電複写機の駆動源（図示せず）に駆動連結され
ている。従って、上記円筒スリーブ部材２２は、上記駆
動源によって支持軸２８（従って、上記回転軸線）を中
心として矢印２０で示す所定方向（図１において反時計
方向）に回転駆動される。静止永久磁石２４はロール状
であり、その周縁部に周方向に間隔を置いて位置する複
数個の磁極（即ち、３個のＳ極とこれらの間に位置する
２個のＮ極）を有している。A developer application means 18 is disposed within the developer housing 12 . The developer application means 18 in the illustrated embodiment comprises a rotationally driven cylindrical sleeve member 22.
and a stationary permanent magnet 24 disposed within this sleeve member 22. Disk-shaped end plates 26 (only one is shown in FIG. 3) are attached to both ends of the cylindrical sleeve member 22, and each of the end plates 26 has a front-back direction (
In other words, the support shaft 2 extending in the width direction of the developing device 2
8 (constituting a rotation axis extending substantially horizontally in the width direction)
is fixed, and the support shaft 28 is rotatably supported between the front wall 4 and the rear wall 6. A connecting means (
(not shown) is installed, and this connecting means is drivingly connected to a drive source (not shown) of the electrostatic copying machine via appropriate means. Therefore, the cylindrical sleeve member 22 is rotationally driven by the drive source in a predetermined direction (counterclockwise in FIG. 1) shown by the arrow 20 about the support shaft 28 (therefore, the rotational axis). The stationary permanent magnet 24 is roll-shaped and has a plurality of magnetic poles (i.e., three south poles and two north poles located between these poles) spaced apart in the circumferential direction on its periphery. are doing.
【００１２】現像剤適用手段１８の円筒スリーブ部材２
２の周囲には、矢印２０で示す回転方向に見て順次に位
置する現像剤汲み上げ域３０、穂切域３２、現像域３４
及び現像剤剥離域３６が存在する。現像剤汲み上げ域３
０はスリーブ部材２２の片側（図１において右側）に配
設され、穂切域３２はスリーブ部材２２の略最上部位に
配置され、現像域３４はスリーブ部材２２の他側（図１
において左側）に配置され、そして現像剤剥離域３６は
スリーブ部材２２の上記片側で且つ現像剤汲み上げ域３
０の下方に配設されている。Cylindrical sleeve member 2 of developer application means 18
2, a developer pumping area 30, a cutting area 32, and a developing area 34 are located sequentially in the direction of rotation shown by the arrow 20.
and a developer peeling area 36. Developer pumping area 3
0 is disposed on one side of the sleeve member 22 (on the right side in FIG. 1), the panicle cutting area 32 is disposed on the substantially uppermost part of the sleeve member 22, and the developing area 34 is on the other side of the sleeve member 22 (on the right side in FIG. 1).
, and the developer stripping area 36 is located on the one side of the sleeve member 22 and the developer pumping area 3
It is located below 0.
【００１３】穂切域３２には穂切手段３８が設けられて
いる。図示の実施例では、上記側壁１０の内面に固定さ
れた部材３９に設けられた垂下突部によって穂切手段３
８が形成されている。この穂切手段３８の先端は、例え
ば１ｍｍ程度でよい若干の間隔を置いてスリーブ部材２
２の周表面に近接せしめられている。現像域３４におい
ては、側壁１０の下端縁と底壁８の片縁との間に規定さ
れている開口４０を通して、スリーブ部材２２の周表面
が静電複写機に矢印４２で示す方向に回転自在に装着さ
れた回転ドラム４４の周表面に若干の間隔を置いて対向
している。この回転ドラム４４はその周表面に感光体を
有しており、かかる感光体上にそれ自体は公知の方式に
より静電潜像が形成される。A panicle cutting means 38 is provided in the panicle cutting area 32 . In the illustrated embodiment, the ear cutting means 3 is cut by a hanging protrusion provided on a member 39 fixed to the inner surface of the side wall 10.
8 is formed. The tip of this ear cutting means 38 is inserted into the sleeve member 2 at a slight interval of about 1 mm, for example.
It is brought close to the circumferential surface of No. 2. In the developing area 34, the circumferential surface of the sleeve member 22 is rotatable in the direction indicated by an arrow 42 in the electrostatic copying machine through an opening 40 defined between the lower edge of the side wall 10 and one edge of the bottom wall 8. It faces the circumferential surface of a rotating drum 44 mounted on the drum 44 with a slight interval therebetween. The rotating drum 44 has a photoreceptor on its circumferential surface, and an electrostatic latent image is formed on the photoreceptor by a method known per se.
【００１４】現像ハウジング１２内には、更に、回転攪
拌機構４６から構成されている現像剤攪拌手段が配設さ
れている。図１から明らかな如く、回転攪拌機構４６は
、スリーブ部材２２の上記片側に隣接して配設され、矢
印２０で示すスリーブ部材２２の回転方向に見て現像剤
剥離域３６から現像剤汲み上げ域３０の上流端部に渡る
領域に位置せしめられている。図１及び図３を参照して
説明すると、図示の回転攪拌機構４６は、スリーブ部材
２２の上記回転軸線と実質上平行に延びる回転軸部４８
と、回転軸部４８に対して同心状に設けられた管状部５
０と、管状部５０の周表面に間隔を置いて設けられその
幅方向（図１において紙面に垂直な方向、図３において
左下方から右上方に延びる方向）に延びる複数枚の攪拌
羽根５２と、回転軸部４８と管状部５０との間に配設さ
れた現像剤移動羽根を構成する螺旋羽根５４とを有して
いる。螺旋羽根５４は上記管状部５０の幅方向片端側か
らその幅方向他端側まで螺旋状に延びている。また、半
径方向外方に放射状に延びる攪拌羽根５２には、矩形状
の切欠き部５６が形成されている。この切欠き部５６は
、複数枚の攪拌羽根５２の少なくとも大部分にその幅方
向の位置を適宜ずらして形成するのが好ましい。図示の
実施例では、管状部５０を展開した状態で示す図４から
明らかな如く、複数枚の攪拌羽根５２の各々には、夫々
、切欠き部５６が１個形成されている。そして、この切
欠き部５６は幅方向の位置をずらして形成され、管状部
５０の全周に対して１個配設されると共にその全幅に渡
って配設されるように設けられている。上述した回転攪
拌機構４６の回転軸部４８にはその軸方向に延びる断面
が矩形状の貫通孔が形成され、かかる貫通孔に矩形状の
軸部材５８（回転攪拌機構４６の回転軸線を構成する）
が装着されている。この軸部材５８の両端部、従って回
転攪拌機構４６の両側には、管状部５０の両端に対して
夫々幅方向に間隔を置いて円形端板６０（図２及び図３
参照）が軸部材５８と一体に回転するように装着されて
いる。図示の実施例においては、回転攪拌機構４６の両
端から突出する軸部材５８の両突出部の各々に夫々矩形
状の孔が形成された円形端板６０を挿入してその内面に
設けられているボス部６２を上記管状部５０に当接する
ことによって、円形端板６０は管状部５０の両端に対し
て幅方向に間隔を置いて装着される。軸部材５８の片端
側に装着された片方の円形端板６０（図２において左側
、図３において左下側に配設された円形端板６０）の内
面には、現像剤１４を半径方向内方へ移動せしめて上記
回転軸部４８と上記管状部５０との間に規定されている
間隙に導くための複数個の案内突条６４（実施例におい
て４個形成されているが、図２にそのうちの１個を示す
）が設けられている。また、軸部材５８の他端側に装着
された他方の円形端板６０（図２において右側、図３に
おいて右上側に配設された円形端板６０）の内面には、
現像剤１４を半径方向外方へ移動せしめて上記回転軸４
８と上記管状部５０との間の間隙内から導出するための
複数個の案内突条６６（図３に示す如く４個形成されて
いる）が設けられている。上記回転攪拌機構４６及び円
形端板６０が装着された軸部材５８は、図２に示す如く
、上記前壁４及び上記後壁６に回転自在に支持されてい
る。この軸部材５８の他端（従って、前後方向後端）に
は連結手段（図示せず）が装着され、かかる連結手段が
適宜の手段を介して上記駆動源（図示せず）に駆動連結
されている。従って、回転攪拌機構４６は、上記駆動源
によって軸部材５８を中心として矢印６８で示す所定方
向（図１において反時計方向であって、矢印２０で示す
スリーブ部材２２の回転方向と同一の方向）に回転駆動
される。[0014] Further, a developer stirring means constituted by a rotary stirring mechanism 46 is disposed within the developing housing 12. As is clear from FIG. 1, the rotary agitation mechanism 46 is disposed adjacent to the above-mentioned one side of the sleeve member 22 and carries the developer from the developer stripping region 36 to the developer pumping region when viewed in the rotational direction of the sleeve member 22 shown by the arrow 20. 30. Referring to FIGS. 1 and 3, the illustrated rotary stirring mechanism 46 includes a rotating shaft portion 48 extending substantially parallel to the rotational axis of the sleeve member 22.
and a tubular portion 5 provided concentrically with respect to the rotating shaft portion 48.
0, and a plurality of stirring blades 52 provided at intervals on the circumferential surface of the tubular portion 50 and extending in the width direction (direction perpendicular to the plane of paper in FIG. 1, direction extending from the lower left to the upper right in FIG. 3). , a spiral blade 54 that constitutes a developer moving blade disposed between the rotating shaft portion 48 and the tubular portion 50. The spiral blade 54 extends spirally from one end of the tubular portion 50 in the width direction to the other end in the width direction. Further, a rectangular notch 56 is formed in the stirring blade 52 that extends radially outward. It is preferable that the notch portion 56 is formed in at least a large portion of the plurality of stirring blades 52 by appropriately shifting the position thereof in the width direction. In the illustrated embodiment, as is clear from FIG. 4, which shows the tubular portion 50 in an expanded state, each of the plurality of stirring blades 52 has one cutout portion 56 formed therein. The notch portions 56 are formed at different positions in the width direction, and one notch portion 56 is provided around the entire circumference of the tubular portion 50 and is provided over the entire width thereof. A through hole with a rectangular cross section extending in the axial direction is formed in the rotating shaft portion 48 of the rotating stirring mechanism 46 described above, and a rectangular shaft member 58 (forming the rotating axis of the rotating stirring mechanism 46) is formed in the through hole. )
is installed. At both ends of the shaft member 58, and therefore at both sides of the rotary agitation mechanism 46, circular end plates 60 (FIGS. 2 and 3
) is mounted so as to rotate together with the shaft member 58. In the illustrated embodiment, a circular end plate 60 having a rectangular hole is inserted into each of the protruding parts of the shaft member 58 protruding from both ends of the rotary stirring mechanism 46, and provided on the inner surface thereof. By bringing the boss portion 62 into contact with the tubular portion 50, the circular end plate 60 is attached to both ends of the tubular portion 50 at intervals in the width direction. The developer 14 is applied radially inward to the inner surface of one circular end plate 60 (the circular end plate 60 disposed on the left side in FIG. 2 and the lower left side in FIG. 3) attached to one end side of the shaft member 58. A plurality of guide ridges 64 (four guide ridges are formed in the embodiment, but one of them is shown in FIG. ) is provided. Further, on the inner surface of the other circular end plate 60 (the circular end plate 60 disposed on the right side in FIG. 2 and the upper right side in FIG. 3) attached to the other end side of the shaft member 58,
The developer 14 is moved radially outward and the rotating shaft 4
A plurality of guide protrusions 66 (four guide protrusions 66 are formed as shown in FIG. 3) are provided to lead out from within the gap between the guide protrusion 8 and the tubular portion 50. The shaft member 58 to which the rotary stirring mechanism 46 and the circular end plate 60 are attached is rotatably supported by the front wall 4 and the rear wall 6, as shown in FIG. A connecting means (not shown) is attached to the other end of the shaft member 58 (therefore, the rear end in the longitudinal direction), and this connecting means is drivingly connected to the drive source (not shown) through an appropriate means. ing. Therefore, the rotary agitation mechanism 46 is driven by the drive source in a predetermined direction indicated by an arrow 68 about the shaft member 58 (counterclockwise in FIG. 1, the same direction as the direction of rotation of the sleeve member 22 indicated by an arrow 20). Rotationally driven.
【００１５】上記現像ハウジング１２内には、仕切板７
０も配設されている。図１乃至図３を参照して説明する
と、図示の仕切板７０は、上記回転攪拌機構４６の上方
に位置する下端から図１において左方へ傾斜して上方に
延びる傾斜部７２と、この傾斜部７２の上端から実質上
水平に図１において左方へ延びる水平端部７４とを有し
ている。水平上端部７４は、穂切部材３８が位置する穂
切域３２よりも幾分上流側に位置している。図２及び図
３に明確に図示する如く、仕切板７０の傾斜部７２の上
面には、その幅方向（即ち図１において紙面に垂直な前
後方向）に間隔を置いて複数個（図示の場合は１２個）
の案内突条７６が設けられている。かかる案内突条７６
の各々は、下端に向って即ち回転攪拌機構４６に向って
他端側から片端側（図２において右側から左側、図３に
おいて右上側から左下側）に傾斜せしめられている。上
述した構成の仕切板７０は、図１から明らかな如く、回
転攪拌機構４６の上方から穂切域３２の上流側まで、現
像剤汲み上げ域３０から穂切域３２の上流側まで運ばれ
る現像剤１４の、漸次上昇せしめられている移動経路の
上方を延びている。A partition plate 7 is provided inside the developer housing 12.
0 is also provided. Explaining with reference to FIGS. 1 to 3, the illustrated partition plate 70 includes an inclined portion 72 that extends upward from the lower end located above the rotary stirring mechanism 46 and is inclined leftward in FIG. The horizontal end portion 74 extends substantially horizontally from the upper end of the portion 72 to the left in FIG. The horizontal upper end portion 74 is located somewhat upstream of the ear cutting area 32 where the ear cutting member 38 is located. As clearly shown in FIGS. 2 and 3, on the upper surface of the inclined portion 72 of the partition plate 70, there are a plurality of pieces (in the illustrated case is 12 pieces)
A guide protrusion 76 is provided. Such guide protrusion 76
Each of them is inclined from the other end to one end (from the right side to the left side in FIG. 2, from the upper right side to the lower left side in FIG. 3) toward the lower end, that is, toward the rotating stirring mechanism 46. As is clear from FIG. 1, the partition plate 70 having the above-mentioned configuration is used to collect the developer carried from above the rotating stirring mechanism 46 to the upstream side of the ear cutting area 32 and from the developer pumping area 30 to the upstream side of the ear cutting area 32. 14, extending above the progressively ascending travel path.
【００１６】上記部材３９には、穂切手段３８から上方
に延びる案内部７８も付設されている。図１を参照して
説明すると、案内部７８は穂切手段３８から、従って上
記スリーブ部材２２の表面から上方に向って上記片側（
図１において右側）に傾斜して延び、その下面によって
現像剤を上記片側上方に案内する案内面を規定している
。この案内部７８の幅方向中央部には、キヤリア粒子と
トナー粒子の割合に対応する現像剤１４のインダクタン
スを検出する、それ自体は周知の形態でよい接触式現像
剤検出器８０が固定されている。図１を参照することに
よって容易に理解される如く、案内部７８には円形開口
が形成されており、現像剤検出器８０の円形検出器８２
がかかる開口に位置せしめられている。円形検出部８０
の下端面が現像剤接触面８４をなし、現像剤検出器８０
はこの現像剤接触面８４に接触する現像剤１４のインダ
クタンスを検出する。図１に図示する如く、現像剤接触
面８４は、案内部７８の案内面と同一平面をなして露呈
せしめられている。The member 39 is also provided with a guide portion 78 extending upward from the ear cutting means 38. Referring to FIG. 1, the guide portion 78 extends upwardly from the ear cutting means 38 and therefore from the surface of the sleeve member 22 to cut the one side (
It extends obliquely to the right side in FIG. 1, and its lower surface defines a guide surface that guides the developer upward on one side. A contact type developer detector 80, which itself may be of a well-known form, is fixed to the center portion of the guide portion 78 in the width direction, and detects the inductance of the developer 14 corresponding to the ratio of carrier particles to toner particles. There is. As can be easily understood by referring to FIG.
is located in such opening. Circular detection section 80
The lower end surface of the developer contact surface 84 serves as a developer detector 80.
detects the inductance of the developer 14 in contact with this developer contact surface 84. As shown in FIG. 1, the developer contact surface 84 is exposed and flush with the guide surface of the guide portion 78. As shown in FIG.
【００１７】上記現像ハウジング１２の上部には、更に
、トナー粒子８６を収容するトナー粒子収容器８８が配
設されている。このトナー粒子収容器８８の最下端部に
はトナー粒子排出開口９０が形成されている。このトナ
ー粒子排出開口９０は、回転攪拌機構４６の矢印６８で
示す回転方向に見て、上記回転攪拌機構４６の最上部位
よりも若干上流側の上方に位置している。トナー粒子排
出開口９０には、トナー粒子供給手段９２が付設されて
いる。図示の実施例においては、トナー粒子供給手段９
２はトナー粒子排出開口９０の直ぐ上方に回転自在に装
着されたトナー粒子供給ローラ９４から構成されている
。このトナー粒子供給ローラ９４の周表面には多数の凹
部又は、溝が形成されている。トナー粒子供給ローラ９
４は、上記現像剤検出器８０が検出する現像剤のインダ
クタンスに応じて選択的に回動されるステッピングモー
タの如き駆動源（図示せず）によって、矢印９６で示す
方向に所定量回動せしめられる。トナー粒子供給ローラ
９４が回動せしめられると、トナー粒子８６がトナー粒
子供給ローラ９４の周表面に存在する多数の凹部又は溝
に収容されてトナー粒子排出開口９０に運ばれ、次いで
トナー粒子排出開口９０を通って回転攪拌機構４６（詳
しくは、回転攪拌機構４６の最上部位よりも矢印６８で
示す回転方向に見て若干上流側の部位）上に向けて落下
せしめられ、かくしてトナー粒子収容器８８から現像容
器１６へトナー粒子８６が供給される。A toner particle container 88 for accommodating toner particles 86 is further provided in the upper part of the developer housing 12. A toner particle discharge opening 90 is formed at the lowermost end of the toner particle container 88 . The toner particle discharge opening 90 is located slightly upstream and above the uppermost portion of the rotary agitation mechanism 46 when viewed in the direction of rotation of the rotary agitation mechanism 46 as indicated by the arrow 68 . A toner particle supply means 92 is attached to the toner particle discharge opening 90 . In the illustrated embodiment, toner particle supply means 9
2 comprises a toner particle supply roller 94 rotatably mounted just above the toner particle discharge opening 90. A large number of recesses or grooves are formed on the circumferential surface of the toner particle supply roller 94 . Toner particle supply roller 9
4 is rotated by a predetermined amount in the direction shown by an arrow 96 by a drive source (not shown) such as a stepping motor that is selectively rotated according to the inductance of the developer detected by the developer detector 80. It will be done. When the toner particle supply roller 94 is rotated, the toner particles 86 are accommodated in a number of recesses or grooves present on the circumferential surface of the toner particle supply roller 94 and are conveyed to the toner particle discharge opening 90, and then to the toner particle discharge opening 90. 90 and fall onto the rotary agitation mechanism 46 (specifically, a portion slightly upstream of the uppermost portion of the rotary agitation mechanism 46 in the direction of rotation shown by the arrow 68), and thus the toner particle container 88 Toner particles 86 are supplied from the developer container 16 to the developer container 16 .
【００１８】上述した通りの現像装置２においては、現
像剤適用手段１８のスリーブ部材２２の矢印２０で示す
方向への回転によって、次の通りの挙動が生じる。図１
を参照して説明すると、現像剤汲み上げ域３０において
は、静止永久磁石２４の磁気吸引力によって、現像容器
１６内に存在する現像剤１４の一部がスリーブ部材２２
の周表面に吸着保持される。そして、スリーブ部材２２
の周表面に吸着された現像剤１４は、スリーブ部材２２
の矢印２０で示す方向の回転によって矢印２０で示す方
向に移動され、上記現像剤汲み上げ域３０から漸次上昇
せしめられて穂切域３２に運ばれる。この際には、図１
から容易に理解される如く、現像剤１４はスリーブ部材
２２の周表面に沿った、仕切板７０の下方に位置する現
像剤移動経路を通って移動せしめられる。In the developing device 2 as described above, the following behavior occurs when the sleeve member 22 of the developer application means 18 rotates in the direction shown by the arrow 20. Figure 1
To explain with reference to FIG.
It is adsorbed and held on the peripheral surface of. And the sleeve member 22
The developer 14 adsorbed to the circumferential surface of the sleeve member 22
The developer is moved in the direction shown by the arrow 20 by rotation in the direction shown by the arrow 20, and is gradually raised from the developer drawing area 30 and carried to the ear cutting area 32. In this case, Figure 1
As can be easily understood from the figure, the developer 14 is moved through a developer movement path located below the partition plate 70 along the circumferential surface of the sleeve member 22.
【００１９】穂切板３２においては、スリーブ部材２２
の周表面に吸着保持されている現像剤１４に穂切手段３
８が作用して、スリーブ部材２２の周表面から過剰の現
像剤１４を除去し、かくしてスリーブ部材２２の周表面
に吸着保持される現像剤１４の層厚さ即ち穂長を所要の
値にせしめる。穂切手段３８の作用によってスリーブ部
材２２の周表面から除去された現像剤１４は、案内部７
８の案内面に案内されてスリーブ部材２２の表面から離
れる方向に且つ上記現像剤１４の移動方向（矢印２０で
示す方向）に見て上流側に上方に傾斜して運ばれ、仕切
板７０の水平上端部７４に導かれる。上記水平上端部７
４に導かれた現像剤１４は、次いで、傾斜部７２上を流
動して回転攪拌機構４６上へ流下する。傾斜部７２上を
流動する際には、傾斜部７２の案内突条７６が仕切板７
０の他端側からその片端側に傾斜せしめられている故に
、現像剤１４はその他端側からその片端側（図２におい
て右側から左側）に偏流せしめられる。スリーブ部材２
２の周表面から除去されて案内部材７８の案内面に案内
される現像剤１４は、案内面に現像剤検出器８０の現像
剤接触面８４が露呈せしめられている故に、この現像剤
接触面８４に接触し、従って、現像剤検出器８０はかよ
うな現像剤１４のインダクタンスを検出する。In the panicle cutting plate 32, the sleeve member 22
The ear cutting means 3 is attached to the developer 14 which is adsorbed and held on the circumferential surface of the developer 14.
8 acts to remove excess developer 14 from the circumferential surface of the sleeve member 22, thus bringing the layer thickness, that is, the spike length, of the developer 14 adsorbed and held onto the circumferential surface of the sleeve member 22 to a desired value. . The developer 14 removed from the circumferential surface of the sleeve member 22 by the action of the ear cutting means 38 is transferred to the guide portion 7
The developer 14 is guided by the guide surface 8 and tilted upward in the direction away from the surface of the sleeve member 22 and toward the upstream side when viewed in the direction of movement of the developer 14 (the direction indicated by the arrow 20), and is carried toward the partition plate 70. It is guided to the horizontal upper end 74. Above horizontal upper end 7
The developer 14 guided to the rotary agitation mechanism 4 then flows on the inclined portion 72 and flows down onto the rotary agitation mechanism 46 . When flowing on the slope part 72, the guide protrusion 76 of the slope part 72 is connected to the partition plate 7.
Since the developer 14 is inclined from the other end side to the one end side thereof, the developer 14 is caused to drift from the other end side to the one end side (from the right side to the left side in FIG. 2). Sleeve member 2
Since the developer contact surface 84 of the developer detector 80 is exposed on the guide surface, the developer 14 removed from the peripheral surface of the guide member 78 and guided to the guide surface of the guide member 78 is exposed to the developer contact surface 84 of the developer detector 80. 84 and thus the developer detector 80 detects the inductance of such developer 14.
【００２０】次に、スリーブ部材２２の周表面に吸着保
持されている現像剤１４は、スリーブ部材２２の矢印２
０で示す方向の回転によって現像域３４に運ばれ、この
現像域３４において、矢印４２で示す方向に回転せしめ
られている回転ドラム４４上の感光体に接触せしめられ
、かくして現像剤１４中のトナー粒子が感光体上の静電
潜像に施されて静電潜像がトナー像に現像される。Next, the developer 14 adsorbed and held on the circumferential surface of the sleeve member 22 is moved along the arrow 2 of the sleeve member 22.
The toner in the developer 14 is carried to the development zone 34 by the rotation in the direction indicated by 0, where it is brought into contact with a photoreceptor on a rotating drum 44 which is being rotated in the direction indicated by the arrow 42. Particles are applied to the electrostatic latent image on the photoreceptor to develop the electrostatic latent image into a toner image.
【００２１】しかる後に、スリーブ部材２２の周表面に
吸着保持されている現像剤１４は、スリーブ部材２２の
矢印２０で示す方向の回転によって現像剤剥離域３６に
運ばれる。この現像剤剥離域３６においては、静止永久
磁石２４に磁極が存在せず、従って磁気吸引力が著しく
小さいことに加えて、矢印６８で示す方向に回転せしめ
られる回転攪拌機構４６によって攪拌される現像剤１４
の流れがスリーブ部材２２の周表面に作用することによ
って、スリーブ部材２２の周表面から現像剤１４が剥離
される。Thereafter, the developer 14 adsorbed and held on the circumferential surface of the sleeve member 22 is carried to the developer stripping area 36 by rotation of the sleeve member 22 in the direction shown by arrow 20. In this developer stripping region 36, there is no magnetic pole in the stationary permanent magnet 24, and therefore the magnetic attraction force is extremely small. agent 14
As the flow acts on the circumferential surface of the sleeve member 22, the developer 14 is peeled off from the circumferential surface of the sleeve member 22.
【００２２】矢印６８で示す方向に回転せしめられる回
転攪拌機構４６は、現像剤剥離域３６にてスリーブ部材
２２から剥離された現像剤１４、仕切板７０上を上述し
た如くして流動して回転攪拌機構４６上に流下する現像
剤１４、及び選択的に回転されるトナー粒子供給ローラ
９４の作用によってトナー粒子収容器８８のトナー粒子
排出開口９０から回転攪拌機構４６上に流下するトナー
粒子８６を攪拌し、かくして現像剤１４中のキヤリア粒
子とトナー粒子を均一に混合せしめると共にトナー粒子
を特定極性に摩擦帯電せしめ、しかる後に現像剤汲み上
げ域３０に送給する。そして、回転攪拌機構４６が回転
せしめられる間は、仕切板７０の案内突条７６の作用に
よってその他端側からその片端側に向けて回転攪拌機構
４６の管状部５０の片端まで移動せしめられた現像剤１
４は、管状部５０の片端と片方の円形端板６０（図２に
おいて左側、図３において左下側に配設された円形端板
６０）との間を通り、この円形端板６０に形成された案
内突条６４に案内されて回転軸部４８と管状部５０との
間の間隙に導入される。間隙内に導入された現像剤１４
は、矢印６８で示す方向に回転される回転攪拌機構４６
の螺旋羽根５４の作用によって上記間隙内を片端側から
他端側（図２において左側から右側、図３において左下
側から右上側）に向けて移動せしめられ、管状部５０の
他端まで移動せしめられると、他方の円形端板６０（図
２において右側、図３において右上側に配設された円形
端板６０）に形成された案内突条６６に案内され、管状
部５０の他端とこの円形端板６０との間を通って上記間
隙内から導出される。従って、仕切板７０の案内突条７
６によって片端側に偏流せしめられた現像剤１４は回転
攪拌機構４６の回転軸部４８と管状部５０との間の間隙
を通って他端側に移動せしめられ、かくして現像容器１
６内の現像剤１４は幅方向に均質化される。The rotary agitation mechanism 46, which is rotated in the direction indicated by the arrow 68, flows and rotates as described above over the partition plate 70 and the developer 14 peeled off from the sleeve member 22 in the developer peeling area 36. The developer 14 flowing down onto the stirring mechanism 46 and the toner particles 86 flowing down onto the rotating stirring mechanism 46 from the toner particle discharge opening 90 of the toner particle container 88 are caused by the action of the toner particle supply roller 94 that is selectively rotated. The developer material 14 is agitated to uniformly mix the carrier particles and toner particles in the developer material 14 and triboelectrically charge the toner particles to a particular polarity before being delivered to the developer pumping zone 30. While the rotary agitation mechanism 46 is being rotated, the developing image is moved from the other end toward one end of the tubular portion 50 of the rotary agitation mechanism 46 by the action of the guide protrusion 76 of the partition plate 70. Agent 1
4 passes between one end of the tubular portion 50 and one circular end plate 60 (the circular end plate 60 disposed on the left side in FIG. 2 and on the lower left side in FIG. 3), and is formed on this circular end plate 60. It is guided by the guide protrusion 64 and introduced into the gap between the rotating shaft part 48 and the tubular part 50. Developer 14 introduced into the gap
is a rotating stirring mechanism 46 rotated in the direction shown by an arrow 68.
By the action of the spiral blade 54, it is moved within the gap from one end to the other end (from the left side to the right side in FIG. 2, from the lower left side to the upper right side in FIG. 3), and is moved to the other end of the tubular portion 50. When it is connected to the other end of the tubular portion 50, it is guided by a guide ridge 66 formed on the other circular end plate 60 (the circular end plate 60 disposed on the right side in FIG. 2 and on the upper right side in FIG. 3). It passes between the circular end plate 60 and is led out from within the gap. Therefore, the guide protrusion 7 of the partition plate 70
The developer 14 that has been forced to flow to one end by the rotation agitation mechanism 46 is moved to the other end through the gap between the rotating shaft portion 48 and the tubular portion 50 of the rotating stirring mechanism 46 .
The developer 14 in 6 is homogenized in the width direction.
【００２３】更に、トナー粒子供給ローラ９４の回動に
よってトナー粒子排出開口９０を通って落下せしめられ
たトナー粒子８６は、攪拌羽根５２に形成されている切
欠き部５６を通って、攪拌羽根５２によって攪拌されて
いる現像剤１４に供給され、かくして新たなトナー粒子
８６は現像剤１４に確実に供給されて混合される。また
、上記切欠き部５６は、図４に示す如く、管状部５０の
全周に対して１個配設されると共にその全幅に渡って配
設されている故に、上記新たなトナー粒子８６は回転攪
拌機構４６の全幅に渡って実質上均一に供給される。Furthermore, the toner particles 86 that have fallen through the toner particle discharge opening 90 due to the rotation of the toner particle supply roller 94 pass through the notch 56 formed in the agitation blade 52 and reach the agitation blade 52. The toner particles 86 are supplied to the developer 14 which is being stirred by the toner particles 86, thus ensuring that new toner particles 86 are supplied to the developer 14 and mixed therewith. Further, as shown in FIG. 4, one notch 56 is provided around the entire circumference of the tubular portion 50 and is provided over the entire width thereof, so that the new toner particles 86 are It is supplied substantially uniformly over the entire width of the rotary stirring mechanism 46.
【００２４】[0024]
【発明の効果】本発明の静電潜像現像装置においては、
装置を徒に大型化する必要なくして、傾斜案内突条を有
する仕切板、並びに現像剤攪拌手段に組み込まれた現像
剤移動羽根及び内面に案内突条が形成されている一対の
円形端板の作用によって現像剤が幅方向に充分良好に混
合せしめられる。[Effect of the invention] In the electrostatic latent image developing device of the present invention,
Without needlessly increasing the size of the device, a partition plate having an inclined guide protrusion, a developer moving blade incorporated in the developer stirring means, and a pair of circular end plates having guide protrusions formed on the inner surface can be used. Due to this action, the developer is sufficiently mixed in the width direction.
【図１】本発明に従って構成された静電潜像現像装置の
一実施例を示す断面図。FIG. 1 is a sectional view showing an embodiment of an electrostatic latent image developing device constructed according to the present invention.
【図２】図１の静電潜像現像装置における仕切板及びそ
の近傍を示す平面図。FIG. 2 is a plan view showing a partition plate and its vicinity in the electrostatic latent image developing device of FIG. 1;
【図３】図１の静電潜像現像装置における仕切板、現像
剤適用手段及び回転攪拌機構を示す、一部を分解すると
共に一部を切欠いた斜面図。FIG. 3 is a partially exploded and partially cutaway perspective view showing a partition plate, a developer applying means, and a rotating stirring mechanism in the electrostatic latent image developing device of FIG. 1;
【図４】図３の回転攪拌機構の管状部を展開した状態を
示す展開図。FIG. 4 is an exploded view showing the tubular portion of the rotary stirring mechanism of FIG. 3 in an expanded state.
２：静電潜像現像装置 １２：現像ハウジング １４：現像剤 １６：現像容器 １８：現像剤適用手段 ２２：円筒状スリーブ部材 ２４：静止永久磁石 ３０：現像剤汲み上げ域 ３２：穂切域 ３４：現像域 ３６：現像剤剥離域 ３８：穂切手段 ４６：回転攪拌機構（現像剤攪拌手段）５２：攪拌羽根 ５４：螺旋羽根（現像剤移動羽根） ６０：円形端板 ６４：案内突条 ６６：案内突条 ７０：仕切板 ７６：案内突条 ８０：現像剤検出器 ８６：トナー粒子 ８８：トナー粒子収容器 ９２：トナー粒子供給手段 2: Electrostatic latent image developing device 12: Developing housing 14: Developer 16: Developing container 18: Developer application means 22: Cylindrical sleeve member 24: Stationary permanent magnet 30: Developer pumping area 32: Panicle cutting area 34: Development area 36: Developer peeling area 38: Ear cutting means 46: Rotating stirring mechanism (developer stirring means) 52: Stirring blade 54: Spiral blade (developer moving blade) 60: Circular end plate 64: Guide protrusion 66: Guide protrusion 70: Partition plate 76: Guide protrusion 80: Developer detector 86: Toner particles 88: Toner particle container 92: Toner particle supply means
Claims (2)
現像剤を収容する現像容器と、現像剤汲み上げ域におい
て該現像容器内の現像剤の一部を表面に保持し、かかる
現像剤を現像域に運ぶ現像剤適用手段と、該現像容器内
の現像剤を攪拌する現像剤攪拌手段と、該現像剤適用手
段の表面から除去された現像剤を該現像剤攪拌手段に導
く仕切板とを具備し、該仕切板の上面には幅方向に間隔
をおいて複数個の案内突条が設けられており、該案内突
条の各々は該現像剤攪拌手段に向かって幅方向他端側か
ら片端側に傾斜せしめられていて、該現像剤適用手段の
表面から除去されて該仕切板上を流動せしめられる現像
剤を該他端側から該片端側に移動せしめる静電潜像現像
装置において、該現像剤攪拌手段は幅方向に延びる回転
軸部と、該回転軸部に対して同心状に配設された管状部
と、該管状部の周表面を周方向に間隔をおいて幅方向に
延びる複数枚の攪拌羽根と、該回転軸部と該管状部との
間隙に配設され該片端側から該間隙に導入された現像剤
を該間隙を通して該他端側に移動せしめるための現像剤
移動羽根と、該管状部の両端に対して夫々幅方向外側に
間隔をおいて該回転軸部の両端部に配設された一対の円
形端板とを含み、該片端側に位置する該円形端板の内面
には、現像剤を半径方向内方に移動せしめて該回転軸部
と該管状部との間の該間隙に導入するための複数個の案
内突条が形成され、該他端側に位置する該円形端板の内
面には、現像剤を半径方向外方に移動せしめて該回転軸
部と該管状部との間の該間隙から導出するための複数個
の案内突条が形成されている、ことを特徴とする静電潜
像現像装置。1. A developer container containing a developer consisting of carrier particles and toner particles, a developer pumping area that retains a portion of the developer in the developer container on a surface, and transports the developer to the development area. comprising a developer applying means, a developer stirring means for stirring the developer in the developer container, and a partition plate that guides the developer removed from the surface of the developer applying means to the developer stirring means, A plurality of guide protrusions are provided on the upper surface of the partition plate at intervals in the width direction, and each of the guide protrusions extends from the other end in the width direction toward the developer stirring means. In an electrostatic latent image developing device which is inclined and moves the developer removed from the surface of the developer applying means and caused to flow on the partition plate from the other end side to the one end side, the developer The stirring means includes a rotating shaft portion extending in the width direction, a tubular portion disposed concentrically with respect to the rotating shaft portion, and a plurality of pieces extending in the width direction at intervals in the circumferential direction on the circumferential surface of the tubular portion. a stirring blade; and a developer moving blade disposed in a gap between the rotating shaft portion and the tubular portion to move the developer introduced into the gap from the one end side through the gap to the other end side. , a pair of circular end plates disposed at both ends of the rotating shaft part at a distance from each other outward in the width direction with respect to both ends of the tubular part, the circular end plate located at one end side; A plurality of guide protrusions are formed on the inner surface for moving the developer radially inward and introducing it into the gap between the rotating shaft portion and the tubular portion, and a plurality of guide protrusions are formed on the other end side. A plurality of guide protrusions are formed on the inner surface of the circular end plate for moving the developer radially outward and leading it out from the gap between the rotating shaft portion and the tubular portion. An electrostatic latent image developing device characterized by:
端側に向かって螺旋状に延びる螺旋羽根である、請求項
１記載の静電潜像現像装置。2. The electrostatic latent image developing device according to claim 1, wherein the developer moving blade is a spiral blade extending spirally from the one end side toward the other end side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3268583A JPH0658568B2 (en) | 1991-09-20 | 1991-09-20 | Electrostatic latent image developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3268583A JPH0658568B2 (en) | 1991-09-20 | 1991-09-20 | Electrostatic latent image developing device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58129554A Division JPS6022153A (en) | 1983-07-18 | 1983-07-18 | Electrostatic latent image developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04362977A true JPH04362977A (en) | 1992-12-15 |
| JPH0658568B2 JPH0658568B2 (en) | 1994-08-03 |
Family
ID=17460547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3268583A Expired - Lifetime JPH0658568B2 (en) | 1991-09-20 | 1991-09-20 | Electrostatic latent image developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0658568B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0973220A (en) * | 1995-09-05 | 1997-03-18 | Ricoh Co Ltd | Developing unit |
| JP2020149002A (en) * | 2019-03-15 | 2020-09-17 | 富士ゼロックス株式会社 | Developing device and image-forming device |
-
1991
- 1991-09-20 JP JP3268583A patent/JPH0658568B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0973220A (en) * | 1995-09-05 | 1997-03-18 | Ricoh Co Ltd | Developing unit |
| JP2020149002A (en) * | 2019-03-15 | 2020-09-17 | 富士ゼロックス株式会社 | Developing device and image-forming device |
| CN111694244A (en) * | 2019-03-15 | 2020-09-22 | 富士施乐株式会社 | Developing device and image forming apparatus |
| CN111694244B (en) * | 2019-03-15 | 2024-03-19 | 富士胶片商业创新有限公司 | Developing device and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0658568B2 (en) | 1994-08-03 |
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