JPS6230272A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS6230272A JPS6230272A JP60170508A JP17050885A JPS6230272A JP S6230272 A JPS6230272 A JP S6230272A JP 60170508 A JP60170508 A JP 60170508A JP 17050885 A JP17050885 A JP 17050885A JP S6230272 A JPS6230272 A JP S6230272A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- developing sleeve
- blade
- screw
- developing device
- 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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電子写真複写プロセス等で使用される現像装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a developing device used in electrophotographic copying processes and the like.
（従来の技術）
一般に、現像装置は、現像スリーブの外周面上に保持さ
れた現像剤（通常キャリアとトナーとの混合物からなる
）を周方向に搬送し、前記現像スリーブと静雷港像旧体
との対向オる刃像領域で一静電潜像担体表面に形成され
た静電潜像を現像するようにしている。(Prior Art) In general, a developing device conveys developer (generally consisting of a mixture of carrier and toner) held on the outer circumferential surface of a developing sleeve in the circumferential direction, and transfers the developer between the developing sleeve and the The electrostatic latent image formed on the surface of one electrostatic latent image carrier is developed in the blade image area facing the body.
そして、このものでは、現像スリーブの現象領域背面側
に現像剤を供給することになるが、この供給時点で前記
現像剤は十分に混合、攪拌され、トナーが十分摩擦帯電
している必要がある。In this case, the developer is supplied to the back side of the phenomenon area of the developing sleeve, but at the time of this supply, the developer must be sufficiently mixed and stirred, and the toner must be sufficiently triboelectrically charged. .
特に、複写機の高速化が要求されている今日にあっては
、単位時間当りのトナー消費量が増大する分、急速にト
ナーを補給するとともに、短時間で現像剤を十分混合、
攪拌して現像に適する程度までトナーの帯電量を上げな
ければならない。In particular, in today's world where copying machines are required to be faster, the amount of toner consumed per unit time increases.
The amount of charge of the toner must be increased to a level suitable for development by stirring.
そこで、現像剤を効率良く混合、攪拌するために、現像
スリーブの背面部に現像剤搬送通路を形成するとともに
、該搬送路中に、搬送手段として、螺旋状の羽根部を有
するスクリュウローラを配設し、該スクリュウローラで
、キャリアとトナーとを混合、攪拌しながら搬送するよ
うにしたものが堤案されている。Therefore, in order to efficiently mix and stir the developer, a developer conveyance path is formed on the back side of the developing sleeve, and a screw roller having a spiral blade is disposed in the conveyance path as a conveyance means. An embankment has been proposed in which the carrier and toner are conveyed while being mixed and stirred by the screw roller.
（発明が解決しようとする問題点）
しかしながら、前記のものでも１．スクリュウロ−ラの
羽根部によって一旦掬い上げられた現像剤は、そのまま
の状態で軸方向に搬送されたり、静電気力および粒子間
力等によって、現像剤が羽根部に付着保持されたままに
なったりするので、現象剤が攪拌されず、十分なトナー
の帯電１が得られないという問題点を有していた。(Problems to be Solved by the Invention) However, even with the above-mentioned problems, 1. The developer once scooped up by the blades of the screw roller may be transported in the axial direction as is, or may remain attached to the blades due to electrostatic force, interparticle force, etc. Therefore, there was a problem in that the developing agent was not stirred and a sufficient charge level of 1 of the toner could not be obtained.
さらに、現像剤の攪拌不足によって、現像剤が現像スリ
ーブ表面に供給される際に、また、現像剤を二つの搬送
路で循環搬送する現像装置にありでは、これらの連通部
において、激しく粉煙が発生し、この粉煙が現像スリー
ブと現像装置ハウジングとのわずかな隙間から漏れ出る
ことによって、周辺機器を汚すという問題を有していた
。Furthermore, due to insufficient agitation of the developer, when the developer is supplied to the surface of the developing sleeve, and in a developing device that circulates and conveys the developer through two conveyance paths, a large amount of powder smoke is generated in the communication section between these two conveyance paths. There is a problem in that this powder smoke leaks from a small gap between the developing sleeve and the developing device housing and contaminates peripheral equipment.
この問題点を解決するために、ｎカ記搬送路を長くして
トナーの帯電性向上を図る方法らあるが、現像装置の大
型化を沼来し、装置の小型化が推進されている今日の現
状に逆行するものである。In order to solve this problem, there are methods such as increasing the toner's charging performance by increasing the length of the transport path. This goes against the current situation.
（問題点を解決するための手段）
本発明は、前記従来の現像装置が有ケる問題点、□
を解決するためになされたもので、前記搬送路に設けた
搬送手段を、回転軸と、該回転軸に取り付けた現像剤搬
送羽根とから構成し、該羽根に欠損部を設けるとと乙に
、該欠損部を回転方向に所定角度づつずらし螺旋状に配
置したしのである。(Means for Solving the Problems) The present invention has been made in order to solve the problem □ that the conventional developing device has. , and a developer conveying blade attached to the rotating shaft, and the blade is provided with a defective portion, and (B) the defective portion is arranged in a spiral shape, being shifted by a predetermined angle in the rotational direction.
（実施例）
以下、本発明に係る現像装置の一実施例を添付図面に従
って説明する。(Embodiment) An embodiment of the developing device according to the present invention will be described below with reference to the accompanying drawings.
第１図、第２図において、（１）は感光体ドラム、（２
）は本発明にかかる現像装置を示し、この現像装置（２
）は、大略、現像スリーブ（５１）を備えた現像部（５
）と、第１スクリユウ（６）及び第２スクリユウ（７）
を備えた現像剤循環搬送部（８）とから構成され、これ
らはケーシング（３）とカバー（４）とからなる空間内
に収納されている。In FIGS. 1 and 2, (1) is a photosensitive drum, (2 is
) indicates a developing device according to the present invention, and this developing device (2
) is roughly a developing section (5) equipped with a developing sleeve (51).
), the first screw (6) and the second screw (7)
The developer circulation conveyance section (8) is housed in a space made up of a casing (3) and a cover (4).
現像スリーブ（５１）は、非磁性導電材（例えば、アル
ミニウム）を円筒状に形成したもので、外周面にはサン
ドブラスト処理にて微小凹凸が形成され、矢印（ｂ）方
向に回転駆動可能に支軸（５３）を介してケーシング（
３）に支持されており、内部には磁気ローラ（５２）を
固定状態に内蔵し、現像゛ 領域（
Ａ）で感光体ドラム（１）表面に対向している。The developing sleeve (51) is made of a non-magnetic conductive material (for example, aluminum) formed into a cylindrical shape, and has minute irregularities formed on its outer peripheral surface by sandblasting, and is supported so as to be rotatable in the direction of arrow (b). The casing (
A magnetic roller (52) is fixedly built into the development area (3).
A) faces the surface of the photoreceptor drum (1).
−現像剤循環搬送部（８）は、ケーシング（３）の底□
送路（３２）と現像剤供給搬送路
（３３）とを有し、部を下方に湾曲させて形成した現像
剤混合攪拌搬両者はケーシング（３）の底部から立ち上
った仕切り板（３１）にて仕切られるとともに、仕切り
板（３１１）の両端開口（３４）、 （３５）にて連通
している。- The developer circulation conveyance section (8) is located at the bottom of the casing (3) □
It has a conveyance path (32) and a developer supply conveyance path (33), and the developer mixing and stirring conveyance formed by curving the part downward is connected to the partition plate (31) rising from the bottom of the casing (3). They are partitioned by , and communicated through openings ( 34 ) and ( 35 ) at both ends of the partition plate ( 311 ).
・ 搬送路（３２）は現像スリー
ブ（５１）と平行とし□
、 てあり、搬送路（３３）は搬送
路（３２）よりも第２、 図中左側
で低く、右側で高くなる様に若干傾斜して配置され、開
口（３４）、（３５）は傾斜面で連通、□
している。そして、この傾斜面は現像剤が流れ
易５パ
い様に、現像剤の安息角かそれ以
上の角度となり□
・ ている。- The conveyance path (32) is parallel to the developing sleeve (51), and the conveyance path (33) is second to the conveyance path (32), and is slightly inclined so that it is lower on the left side and higher on the right side in the figure. The openings (34) and (35) communicate with each other through an inclined surface, and
are doing. This inclined surface is at an angle equal to or greater than the angle of repose of the developer so that the developer can easily flow.
λ
−へ
、 また、搬送路（３３）め下流
側端部にはトナー捕１、：
゛・：
・ 給部（３６）が形成され、図示
しないトナー補給槽２′
■
・ からトナーが補給されるように
なっている。In addition, a toner trap 1,: ゛・: ・ A supply section (36) is formed at the downstream end of the conveyance path (33), and toner is replenished from a toner supply tank 2' (not shown). It has become so.
、゛
□、 第１スクリユウ（６）、第
２スクリユウ（７）は１、″
六角形状の支軸（６１）、（７１）に、多数の同−形膚
（ＩＤＱ、： ？Ｆ ｉ ；Ｔｌ 珀ｆｍ＋＋／
（！ ｎ ’１／”ＴＹ Ｑ Ｔｎ ｈへ
・ Ａ Ｍね＊ｎ ）を嵌装したもので、夫々搬送路
（３２）、（３３）に支軸（６１）、（７１）を介して
ケーシング（３）に回転駆動可能に取り付けられており
、矢印（ｃ） 、 （ｄ）方向の回転に基づいて、現像
剤を矢印（Ｃ）、（Ｄ）方向に搬送しつつ混合、攪拌す
るとともに、第１スクリユウ（６）にあっては現像剤を
現像スリーブ（５１）の表面に供給するようにしである
。, ゛□, The first screw (6) and the second screw (7) are 1,'' Hexagonal supporting shafts (61), (71) have a large number of identical skins (IDQ,: ?F i ; Tl珀fm++/
(! n '1/" TY Q Tn h to A Mne*n), and the casing is connected to the conveyor paths (32) and (33) through the support shafts (61) and (71), respectively. It is rotatably attached to (3), and based on the rotation in the directions of arrows (c) and (d), the developer is mixed and stirred while being conveyed in the directions of arrows (C) and (D). The first screw (6) is designed to supply developer to the surface of the developing sleeve (51).
なお、前記第１スクリユウ（６）、第２スクリユウ（７
）、及び現像スリーブ（５１）は、各支軸（６１）、（
７１）、（５３）に取り付けたギヤ（６６）、（７３）
、（５４）が噛合し、図示しない駆動装置を駆動すると
一体的に回転するようにしである。In addition, the first screw (6) and the second screw (7)
), and the developing sleeve (51) is connected to each support shaft (61), (
Gears (66) and (73) attached to 71) and (53)
, (54) are in mesh with each other, and rotate integrally when a drive device (not shown) is driven.
前記羽根部材（６２）は、支軸（６１）、（７１）と同
一形状の挿通部（６３ａ）を有する本体（６３）に、該
本体（６３）の軸に対して所定の角度（０）（第４図参
照）をもって取り付けた楕円形板の三分の−（第３図参
照）を切り欠いて欠損部（６４ｅ）を形成することによ
り羽根部（６４）を形成した樹脂製の一体成形品で、こ
の羽根部材（６２）は支軸（６１）、（７１）に前記羽
根部（６４）の欠損部（６４，ｅ）が搬送方向に向かっ
て回転方向に螺旋状をなすように、六角形の支軸（６１
）、（７１）の所定角度づつ、たとえば、６０度づつず
らし嵌挿されている。The blade member (62) has a main body (63) having an insertion portion (63a) having the same shape as the support shafts (61) and (71), and is formed at a predetermined angle (0) with respect to the axis of the main body (63). (see Fig. 4) A resin integral molding in which the vane portion (64) is formed by cutting out the - third (see Fig. 3) of the elliptical plate attached to the plate to form a defective part (64e). This blade member (62) is arranged so that the defective part (64, e) of the blade part (64) forms a spiral in the rotational direction toward the conveyance direction on the support shafts (61) and (71). Hexagonal support shaft (61
) and (71) by a predetermined angle, for example, by 60 degrees.
なお、羽根部（５３）は、第３図に示すように、軸方向
から見れば、略半円をなすものである。Note that, as shown in FIG. 3, the blade portion (53) has a substantially semicircular shape when viewed from the axial direction.
また、支軸（６１）、（７１）に嵌挿された羽根部材群
の両端羽根部材（６２）は、公知の手段で支軸（６１）
、（７１）に固定され、羽根部材群の軸方向の移動が防
止しである。Further, the blade members (62) at both ends of the blade member group fitted into the support shafts (61) and (71) are connected to the support shaft (61) by known means.
, (71) to prevent movement of the blade member group in the axial direction.
そして、第１スクリユウ（６）、第２スクリユウ（７）
の下流側には夫々送り羽根（６５）、（７２）が嵌装さ
れ、搬送路（３２）、（３３）を矢印（Ｃ）、（Ｄ）方
向に搬送された現像剤を開口（３４）、（３５’）を介
して隣の搬送路（３３）、（３２）に搬送するようにし
ている。And the first screw (6), the second screw (7)
Feed blades (65) and (72) are fitted on the downstream side of the transport paths (32) and (33), respectively, and transport the developer transported in the directions of arrows (C) and (D) through the openings (34). , (35') to the adjacent transport paths (33) and (32).
なお、カバー（４）には現像スリーブ（５１）に対向し
て穂高規制板（４１）が取り付けされ、現像スリーブ（
５１）によって搬送される現像剤の搬送ｍを調整するよ
うにしである。In addition, a height regulating plate (41) is attached to the cover (4) facing the developing sleeve (51), and a height regulating plate (41) is attached to the developing sleeve (51).
51) to adjust the conveyance m of the developer conveyed.
以下、前記構成からなる現像装置の動作について説明す
る。The operation of the developing device having the above configuration will be described below.
まず、図示しない駆動装置を駆動すると、ギヤ（５４）
、（Ｇ ６）、（７３）を介して現像スリーブ（５１）
、第１スクリコウ（６）、および第２スクリユウ（７）
が回転し、トナー補給部（３６）から搬送路（３３）に
補給されたトナーは、第２スクリユウ（７）の矢印（ｄ
）方向の回転に基づいて、搬送路（３３）内の現像剤と
混合、攪拌されながら矢印（Ｄ）方向に搬送され、送り
羽根（７３）にて開口（３４）の傾斜面に案内されて搬
送路（３２）の上流側に移動されろ。First, when the drive device (not shown) is driven, the gear (54)
, (G6), (73) to the developing sleeve (51).
, 1st Scrikou (6), and 2nd Skuriyu (7)
rotates, and the toner replenished from the toner replenishing section (36) to the conveyance path (33) moves along the arrow (d) of the second screw (7).
) direction, the developer is mixed with the developer in the conveyance path (33), stirred, and conveyed in the direction of arrow (D), and is guided by the feed blade (73) to the inclined surface of the opening (34). Move to the upstream side of the conveyance path (32).
続いて、現像剤は第１スクリユウ（６）の矢印（Ｃ）方
向の回転に基づいて、搬送路（３２）内では矢印（Ｃ）
方向に搬送されながら、隣接する羽根部（６４）、（６
４）の軸方向に重なり合う部分に保持された現像剤が現
像スリーブ（５Ｉ）の表面に供給される。このとき、羽
根部（６４）の欠損部（６４ｅ）が螺旋状に形成されて
いるため、現像スリーブ（５１）への現像剤の供給は軸
方向にわたって供給タイミングが異なるうえ、羽根部（
６４）にて余分な現像剤が掻き取られることから、現像
スリーブ（５１）の表面に供給される現像剤にむらを生
じることがない。Subsequently, the developer moves in the direction of arrow (C) in the transport path (32) based on the rotation of the first screw (6) in the direction of arrow (C).
While being conveyed in the direction, the adjacent blade parts (64), (6
The developer held in the axially overlapping portions of 4) is supplied to the surface of the developing sleeve (5I). At this time, since the defective part (64e) of the blade part (64) is formed in a spiral shape, the supply timing of the developer to the developing sleeve (51) differs in the axial direction, and the blade part (
64), the developer supplied to the surface of the developing sleeve (51) will not be uneven.
しかも、現像剤はスクリュウ（６）、（７）の欠損部（
６４ｅ）を通過する際に、混合、攪拌されるため、帯電
位の向上したトナーを有する現像剤を現像スリーブ（５
１）表面に供給することができる。Moreover, the developer is applied to the missing parts of the screws (6) and (7) (
64e), the developer is mixed and stirred when passing through the developing sleeve (5
1) Can be applied to the surface.
また、搬送路（３２）の下流側端部に至った現像剤は、
送り羽根（６５）によって開口（３５）から傾斜面に案
内されて搬送路（３３）に移動する。このように現像剤
は、第１スクリユウ（６）と第２スクリユウ（７）によ
って、搬送路（３２）、（３３）を循環搬送される。こ
の場合、各搬送路（３２）、 （３３）の搬送方向下流
側端部の搬送レベルは、他方の搬送路（３３）、 （３
２）の下流側搬送レベルよりも高く設定されているため
、現像剤は各搬送路（３２）。Furthermore, the developer that has reached the downstream end of the conveyance path (32) is
It is guided from the opening (35) to the inclined surface by the feeding blade (65) and moves to the conveyance path (33). In this way, the developer is circulated and transported through the transport paths (32) and (33) by the first screw (6) and the second screw (7). In this case, the conveyance level at the downstream end in the conveyance direction of each conveyance path (32), (33) is the same as that of the other conveyance path (33), (33).
Since the level is set higher than the downstream conveyance level in step 2), the developer flows through each conveyance path (32).
（３３）の下流側端部に滞溜することなくスムーズに開
口（３４）、 （３５）から他方の搬送路（３３）。The other conveyance path (33) is smoothly opened from (34) and (35) without stagnation at the downstream end of (33).
（３２）に移動し、特に現像剤供給搬送路（３３）にお
ける現象剤の片寄りが生じろことはない。(32), and there is no possibility that the developer will be shifted to one side, especially in the developer supply and conveyance path (33).
そして、現像スリーブ（５１）の外周部に保持された現
像剤は、現像スリーブ（５１）の矢印（ｂ）方向の回転
に基づいてその外周面上を矢印（ｂ）方向に搬送され、
穂高規制板（４１）にて穂切りされた現像剤が感光体ド
ラム（１）と対向する現像領域（Ａ）にて感光体ドラム
（１）表面に形成された静電潜像を現像する。The developer held on the outer circumferential portion of the developing sleeve (51) is conveyed in the direction of arrow (b) on the outer circumferential surface of the developing sleeve (51) based on the rotation of the developing sleeve (51) in the direction of arrow (b).
The developer cut into ears by the height regulating plate (41) develops an electrostatic latent image formed on the surface of the photoreceptor drum (1) in a development area (A) facing the photoreceptor drum (1).
さらに、トナー補給部（３６）から新たなトナーが搬送
路（３３）の上流側に補給され、既存の現像剤と共に搬
送路（３３）内で矢印（Ｄ）方向に搬送されつつ混合、
攪拌され、十分に帯電される。Further, new toner is replenished from the toner replenishing section (36) to the upstream side of the conveyance path (33), and mixed while being conveyed in the direction of arrow (D) within the conveyance path (33) together with the existing developer.
Stir and fully charge.
ところで、羽根部材（６２）を、第５図に示すように、
本体（６３）の羽根部（６４）の回転方向下流側端部に
軸方向に起立した掬い上げ板（６５）を取り付けるよう
にしてもよい。By the way, as shown in FIG. 5, the blade member (62) is
A scooping plate (65) that stands up in the axial direction may be attached to the downstream end in the rotational direction of the blade portion (64) of the main body (63).
この場合、前記掬い上げ仮（６５）によって現像剤は掬
い上げ、落下動作を頻繁に繰り返すことによって現像剤
の撹拌性がよくなり、トナーの帯電性の向上を図ること
ができる。In this case, by frequently repeating the operation of scooping up and dropping the developer using the scooping holder (65), the agitation performance of the developer is improved, and the charging performance of the toner can be improved.
また、羽根部材（５Ｉ）を支軸（５０）に嵌装すること
なく、羽根部材（５１）同士を公知の手段にて一体化す
ることによりスクリュウ（６）、（７）を構成するよう
にしてもよい。Further, the screws (6) and (7) are configured by integrating the blade members (51) by known means without fitting the blade member (5I) onto the spindle (50). It's okay.
さらに、前記実施例では、支軸（６１）、（７１）は断
面が六角形状のものとしたが、これに限らず、円形また
はその他の多角形のものとしてもよい。Further, in the above embodiment, the support shafts (61) and (71) have a hexagonal cross section, but are not limited to this, and may be circular or other polygonal shapes.
この場合、羽根部材（６２）の挿通部（６３ａ）も支軸
（６１）、（７１）と同一形状とする。In this case, the insertion portion (63a) of the blade member (62) also has the same shape as the support shafts (61) and (71).
さらにまた、前記実施例では、搬送手段を回転軸に対し
て所定の角度をもって取り付けた楕円板に欠損部（６４
ｅ）を形成したものとしたが、これに限らず、回転軸に
螺旋状に連続した羽根を取り付けたスクリュウローラに
、欠損部を回転方向に所定角度づつずらし螺旋状となる
ように設けたものとしてもよい。なお、この場合も、前
記欠損部によって形成された羽根部の回転方向下流側に
、第５図に示すような掬い上げ板（６５）を取り付ける
ようにしてもよい。Furthermore, in the above embodiment, the missing portion (64
e), but the present invention is not limited to this, and the screw roller is provided with continuous spiral blades attached to the rotating shaft, and the defective part is shifted by a predetermined angle in the rotation direction to form a spiral shape. You can also use it as In this case as well, a scooping plate (65) as shown in FIG. 5 may be attached to the downstream side in the rotational direction of the blade portion formed by the defective portion.
（発明の効果）
以上の説明で明らかなように、本発明にががる現像装置
は、現像剤搬送路に設けた搬送手段を、回転軸と、該回
転軸に取り付けた現像剤搬送羽根とから構成し、該羽根
に欠損部を設けるとともに、該欠損部を回転方向に所定
角度づつずらし螺旋状に配置した構成としである。(Effects of the Invention) As is clear from the above description, the developing device according to the present invention has a conveying means provided in a developer conveying path that includes a rotating shaft and a developer conveying blade attached to the rotating shaft. The blade is provided with a defective portion, and the defective portion is arranged in a helical manner so as to be shifted by a predetermined angle in the direction of rotation.
したがって、現像剤は羽根部の欠損部を通過する際に混
合、攪拌され、十分帯電性に優れたトナーを現像スリー
ブに供給することができるうえ、攪拌羽根に現像剤が付
着することがない。Therefore, the developer is mixed and stirred when passing through the defective part of the blade, and toner with sufficient chargeability can be supplied to the developing sleeve, and the developer does not adhere to the stirring blade.
また、これにより、粉煙の発生を防止することができ、
現像装置の周辺機器を汚すことらない。This also prevents the generation of powder smoke.
Does not contaminate peripheral equipment of the developing device.
さらに、従来の現像装置のようにパケットローラを使用
することなく現像剤の撹拌性を向上することができるた
め、現像装置の小型化、ひいては、このような現像装置
を有する複写機等の小型化を図ることができる。Furthermore, since it is possible to improve the agitation of the developer without using a packet roller as in conventional developing devices, it is possible to downsize the developing device and, by extension, to downsize copying machines etc. that have such a developing device. can be achieved.
第１図は本発明にかかる現像装置の一実施例を示す断面
図、第２図は現像装置の斜視図、第３図から第４図は羽
根部材の正面図、側面図、第５図は羽根部材の他の実施
例を示す斜視図である。
２・・・現像装置、３・・・ケーシング、５・・・現像
部、６・・・第１スクリユウ、７・・・第２スクリユウ
、８・・・現像剤循環搬送部、３２・・・現像剤混合攪
拌搬送路、３３・・・現像剤供給搬送路、６２・・・羽
根部材、６３・・・本体、６４・・・羽根部、６４ｅ・
・・欠損部。FIG. 1 is a sectional view showing one embodiment of the developing device according to the present invention, FIG. 2 is a perspective view of the developing device, FIGS. 3 to 4 are front and side views of the blade member, and FIG. FIG. 7 is a perspective view showing another example of the blade member. 2...Developing device, 3...Casing, 5...Developing section, 6...First screw, 7...Second screw, 8...Developer circulation conveyance section, 32... Developer mixing stirring conveyance path, 33...Developer supply conveyance path, 62...Blade member, 63...Main body, 64...Blade portion, 64e.
...Defected part.
Claims (1)
つつ循環搬送するようにした現像装置において、前記搬
送手段を、回転軸と、該回転軸に取り付けた現像剤搬送
羽根とから構成し、該羽根に欠損部を設けるとともに、
該欠損部を回転方向に所定角度づつずらし螺旋状に配置
したことを特徴とする現像装置。(1) In a developing device in which the developer is mixed and stirred and cyclically conveyed by a conveying means provided in a conveying path, the conveying means is composed of a rotating shaft and a developer conveying blade attached to the rotating shaft. and providing a defective portion in the blade,
A developing device characterized in that the defective portions are arranged in a helical manner and shifted by a predetermined angle in the rotation direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60170508A JPS6230272A (en) | 1985-07-31 | 1985-07-31 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60170508A JPS6230272A (en) | 1985-07-31 | 1985-07-31 | Developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6230272A true JPS6230272A (en) | 1987-02-09 |
Family
ID=15906245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60170508A Pending JPS6230272A (en) | 1985-07-31 | 1985-07-31 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6230272A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0345556U (en) * | 1989-09-09 | 1991-04-26 | ||
| US6275674B1 (en) | 1999-10-15 | 2001-08-14 | Fujitsu Limited | Developing device, and image forming apparatus using the same |
| JP2006098883A (en) * | 2004-09-30 | 2006-04-13 | Kyocera Mita Corp | Developing device |
| JP2007241047A (en) * | 2006-03-10 | 2007-09-20 | Sharp Corp | Developing device |
| JP2009080360A (en) * | 2007-09-27 | 2009-04-16 | Kyocera Mita Corp | Developing device and image forming apparatus equipped with the same |
| JP2010237342A (en) * | 2009-03-31 | 2010-10-21 | Toray Eng Co Ltd | Toner stirring conveyance screw, developing device, image forming device, and screw piece manufacturing method |
-
1985
- 1985-07-31 JP JP60170508A patent/JPS6230272A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0345556U (en) * | 1989-09-09 | 1991-04-26 | ||
| US6275674B1 (en) | 1999-10-15 | 2001-08-14 | Fujitsu Limited | Developing device, and image forming apparatus using the same |
| JP2006098883A (en) * | 2004-09-30 | 2006-04-13 | Kyocera Mita Corp | Developing device |
| JP2007241047A (en) * | 2006-03-10 | 2007-09-20 | Sharp Corp | Developing device |
| JP4628287B2 (en) * | 2006-03-10 | 2011-02-09 | シャープ株式会社 | Development device |
| JP2009080360A (en) * | 2007-09-27 | 2009-04-16 | Kyocera Mita Corp | Developing device and image forming apparatus equipped with the same |
| JP2010237342A (en) * | 2009-03-31 | 2010-10-21 | Toray Eng Co Ltd | Toner stirring conveyance screw, developing device, image forming device, and screw piece manufacturing method |
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