JPH03140980A - Developing device - Google Patents

Developing device

Info

Publication number
JPH03140980A
JPH03140980A JP1280859A JP28085989A JPH03140980A JP H03140980 A JPH03140980 A JP H03140980A JP 1280859 A JP1280859 A JP 1280859A JP 28085989 A JP28085989 A JP 28085989A JP H03140980 A JPH03140980 A JP H03140980A
Authority
JP
Japan
Prior art keywords
developing roller
developer
fixing member
regulating member
side frame
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
Application number
JP1280859A
Other languages
Japanese (ja)
Inventor
Mitsuharu Endo
光治 遠藤
Masahiro Hosoya
雅弘 細矢
Chikaitsu Satou
佐藤 周逸
Mitsunaga Saitou
三長 斉藤
Yoshimitsu Otaka
善光 大高
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba TEC Corp
Original Assignee
Toshiba Corp
Tokyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1280859A priority Critical patent/JPH03140980A/en
Publication of JPH03140980A publication Critical patent/JPH03140980A/en
Pending legal-status Critical Current

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  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To prevent developer from leaking from both end parts of a developing roller by fixing and disposing a specified fixing member to a side frame between the side surface of the developing roller and a side frame and pressing a periphery by a regulating member. CONSTITUTION:The fixing member 8 is fixed and disposed to the side frame 5a on the side surfaces of both end parts of the developing roller 1 and constituted so as to be pressed by the regulating member 3. The outside diameter of the fixing member 8 is larger than that of the developing roller 1 and the hardness thereof is smaller than that of the developing roller 1. Therefore, adhesive force sufficient enough to prevent the outflow of the developer acts between the regulating member 3 and the fixing member 8, and the developer is sealed by making the elasticity thereof flexibly comply with the mechanical error which is caused by the developing roller 1. Thus, the developer is easily prevented from outflowing from a gap between the regulating member 3 and the fixing member 8 to a space between the regulating member 3 and the side frame 5a.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は、感光体上に形成された静電潜像を非磁性−成
分現像剤によって可視化する非磁性−成分現像装置に関
するものである。
Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention provides a non-magnetic component developing device that visualizes an electrostatic latent image formed on a photoreceptor using a non-magnetic component developer. It is related to.

(従来の技術) 従来、第4図に断面的にまた第5図に斜視的に示すよう
に、現像ローラ1周面上の所定領域で対接するように配
置されているホッパ一部材5、サイドフレーム5a、規
制部材3.3aとで形成される空間に現像剤6を保持し
、この現像剤6を、前記規制部材3.3aにより現像ロ
ーラ1周面上に現像剤6の薄層を形成すると共に電荷を
与え、これを不図示の静電潜像保持体に送り、該静電潜
像上に現像剤を付着せしめて可視像に現像する非磁性−
成分現像装置が知られている。
(Prior Art) Conventionally, as shown in cross section in FIG. 4 and perspectively in FIG. The developer 6 is held in the space formed by the frame 5a and the regulating member 3.3a, and the developer 6 is formed into a thin layer on the circumferential surface of the developing roller 1 by the regulating member 3.3a. At the same time, a non-magnetic material is used to apply a charge, send it to an electrostatic latent image holder (not shown), and deposit a developer on the electrostatic latent image to develop it into a visible image.
Component developing devices are known.

このような非磁性−成分現像装置における現像剤6のシ
ール手段としては、第4図および第5図に示すように、
ウレタン発泡体などのシール祠7をサイドフレーム5a
と規制部材3.3aとの隙間およびサイドフレーム5a
と現像ローラ1周面との隙間を埋めるように配設し、密
封化することにより、現像剤がこほれることなどを防止
する構成を採っている。
As a sealing means for the developer 6 in such a non-magnetic component developing device, as shown in FIGS. 4 and 5,
A seal 7 made of urethane foam or the like is attached to the side frame 5a.
and the gap between the regulating member 3.3a and the side frame 5a.
The developer is disposed so as to fill the gap between the developer roller and the circumferential surface of the developing roller 1, and is sealed to prevent the developer from spilling.

(発明が解決しようとする課題) しかし、上記構成の現像装置の場合、前記シール材7と
現像ローラ1とが密接する面は、現像ローラ1が回転す
るために、容易に現像剤が通り抜けて、結果的に現像剤
6をホッパー外に無為に飛散させてしまうという不都合
がある。特に、図中のP点つまり規制部材3.3aが現
像ローラ1周面に接する領域から漏れ易い。この現像剤
6の漏れなどを防止するには、たとえばシール月7を強
く現像ローラ1に密接することにより達成し得るが、一
方現像ローラ1の回転駆動力が大きくなってしまい、新
たに使用電力や駆動機構の面で問題が生じる。つまり、
現像剤のこほれは主に現像剤を搬送する力のある部分を
密封している′ところからおこり易いので、現像ローラ
の周面にて密封する場合には、強く密封しないとこぼれ
てしまい、結果的に駆動力が大きくならざるを得ない。
(Problem to be Solved by the Invention) However, in the case of the developing device having the above configuration, the surface where the sealing material 7 and the developing roller 1 are in close contact is such that the developer easily passes through the surface as the developing roller 1 rotates. As a result, the developer 6 is inconveniently scattered outside the hopper. In particular, leakage is likely to occur from point P in the figure, that is, from the region where the regulating member 3.3a contacts the circumferential surface of the developing roller 1. This leakage of the developer 6 can be prevented, for example, by strongly bringing the seal 7 into close contact with the developing roller 1. However, on the other hand, this increases the rotational driving force of the developing roller 1, resulting in additional power consumption. Problems arise in terms of the drive mechanism. In other words,
The developer tends to break up mainly because the parts that have the power to transport the developer are sealed, so when sealing the circumferential surface of the developing roller, it must be tightly sealed or it will spill out. As a result, the driving force has to increase.

また、前記シールに用いるウレタン発泡体の劣化により
、充分なシール機能を果さなくなってしまうという問題
がある。
Furthermore, there is a problem in that the urethane foam used for the seal deteriorates and no longer performs a sufficient sealing function.

上記の問題に対する改善策として、特開昭60−135
965号公報に現像ローラ1側面とサイドフレム5との
間に、固定部材を配設する手段が開示されている。この
手段によれば、現像ローラ周面上に形成された現像剤に
は、現像ローラ周面の端部へ向かう力は働かず、また、
ホッパ内の現像剤は、規制部材、サイドフレームおよび
固定部材がそれぞれ固定されているため、現像剤を搬送
する能力もない。したがって、前記規制部材とサイドフ
レームの間や規制部材と固定部材との間からの現像剤の
流出は容易に防止される。しかして、前記現像ローラと
固定部材との間は、現像ローラの回転により現像剤を搬
送する能力があっても、搬送力の方向が放射状外向きな
ので、現像剤は容易に通過できない。しかし、このトナ
ーシール方法は、現像ローラと固定部材とが同径である
ために、現像ローラの偏心などの一寸した機械的誤差の
ために、規制部材と固定部材との間が離れたり、圧接力
か弱くなったりして、現像剤が漏れたりした。
As a remedy for the above problem, JP-A-60-135
Japanese Patent No. 965 discloses means for disposing a fixing member between the side surface of the developing roller 1 and the side frame 5. According to this means, no force is applied to the developer formed on the circumferential surface of the developing roller toward the end of the circumferential surface of the developing roller, and
Since the regulating member, the side frame, and the fixing member are each fixed to the developer in the hopper, there is no ability to transport the developer. Therefore, developer is easily prevented from flowing out between the regulating member and the side frame or between the regulating member and the fixing member. Therefore, even if the developing roller has the ability to transport the developer by rotation, the developer cannot easily pass between the developing roller and the fixed member because the direction of the transporting force is radially outward. However, in this toner sealing method, since the developing roller and the fixed member have the same diameter, slight mechanical errors such as eccentricity of the developing roller may cause the regulating member and the fixed member to separate or come into contact with each other. The power may become weak and the developer may leak.

また、規制部材と現像ローラとの圧接力が変化し、現像
剤の薄層にムラを生じ、画質が劣化する。さらに、現像
ローラが剛体の場合には、規制部材が固定部材にあまり
圧接せず、現像剤漏れを生じ、一方現像ローラが弾性体
で固定部材が剛体の場合には、規制部材が現像ローラに
あまり圧接せず、現像剤薄層が均一に形成できない。
Further, the pressure force between the regulating member and the developing roller changes, causing unevenness in the thin layer of developer and deteriorating image quality. Furthermore, when the developing roller is a rigid body, the regulating member does not come into much pressure contact with the fixed member, causing developer leakage.On the other hand, when the developing roller is an elastic body and the fixing member is rigid, the regulating member does not press against the developing roller. There is not much pressure contact, and a thin layer of developer cannot be formed uniformly.

したがって本発明の目的は、現像ローラの両端部から現
像剤の漏れが全くなく、かつ均一な現像剤層を容易に形
成できるようにした非磁性−成分現像装置を提供するこ
とにある。
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a non-magnetic component developing device in which there is no leakage of developer from both ends of a developing roller and a uniform developer layer can be easily formed.

[発明の構成] (課題を解決するための手段) 弾性を有する現像ローラ周面に、一側面が前記現像ロー
ラ側面に対接するサイドフレームを備えたホッパー内の
現像剤を供給し、規制部材により前記現像ローラ周面上
に現像剤の薄層を形成すると共に電荷を与え、これを静
電潜像保持体に近接し、該静電潜像上に現像剤を付着せ
しめて可視像に現像する現像装置において、 前記現像ローラ側面とサイドフレームとの間に、現像ロ
ーラよりも硬度が低く外径の大きい固定部材をサイドフ
レームに固定配設し、前記規制部材により周縁を押圧す
る構成としたことを骨子としている。
[Structure of the Invention] (Means for Solving the Problems) A developer is supplied to the circumferential surface of a developing roller having elasticity in a hopper provided with a side frame whose one side is in contact with the side surface of the developing roller, and the developer is supplied to the circumferential surface of a developing roller having elasticity. Forming a thin layer of developer on the circumferential surface of the developing roller and applying an electric charge to it, bringing it close to the electrostatic latent image holder, and causing the developer to adhere on the electrostatic latent image to develop it into a visible image. In the developing device, a fixing member having a lower hardness and a larger outer diameter than the developing roller is fixed to the side frame between the side surface of the developing roller and the side frame, and the circumferential edge is pressed by the regulating member. This is the main point.

上記構成において、良好な状態を維持するには、現像ロ
ーラと固定部材の外径の差が0.3〜3mm好ましくは
0.5〜llllInがよく、現像ローラの硬度が20
度(JISA形)以下のときは0.3〜lI% 20度
〜40度のときは0.5〜1 、5mmがよい。このと
きの固定部材の硬度は15度以下好ましくは1o度以下
がよく、10kg以上(スポンジ硬度、A形硬度では1
度以下になってしまう)がよい。また、現像ローラの硬
度が40度以上のときは、外径の差は0.5〜2II1
mがよく、固定部材の硬度は、上記と同様である。さら
に、固定部材の形状は、中空円筒形が好ましいか、規制
部材と接触する部分が上記の条件を満たしている限りそ
の他の部分は、必ずしも上記の条件を満たさすともよい
。たとえば、ホッパーの底部と接する部分は、底部の形
状と一致させれば、こほれ防止は容品であり、また、底
部と接着してもよい。さらにまた、潜像保持体と現像ロ
ーラを接触させる現像方法を用いるときゃ、非接触現像
法でも、固定部材が潜像保持体に接触すると、障害がで
る場合などには、固定部Hのその部分の形状を変更して
、接触しないようにするなとして、障害がないようにす
るのか望ましい。
In the above configuration, in order to maintain a good condition, the difference in outer diameter between the developing roller and the fixing member should be 0.3 to 3 mm, preferably 0.5 to lllIn, and the hardness of the developing roller should be 20 mm.
(JISA type) or less, 0.3 to 1I%, and 20 to 40 degrees, 0.5 to 1.5 mm. The hardness of the fixing member at this time is preferably 15 degrees or less, preferably 10 degrees or less, and 10 kg or more (sponge hardness, A type hardness is 10 degrees or less).
(below) is better. In addition, when the hardness of the developing roller is 40 degrees or more, the difference in outer diameter is 0.5 to 2II1.
m is good, and the hardness of the fixing member is the same as above. Furthermore, the shape of the fixing member is preferably a hollow cylindrical shape, or as long as the portion that contacts the regulating member satisfies the above conditions, the other portions may not necessarily satisfy the above conditions. For example, if the part in contact with the bottom of the hopper matches the shape of the bottom, it will prevent the container from breaking, or it may be bonded to the bottom. Furthermore, when using a developing method that brings the latent image holder into contact with the developing roller, even in a non-contact development method, if the fixing member comes into contact with the latent image holder and a problem occurs, it is necessary to It is desirable to change the shape of the parts so that they do not come into contact with each other, so that there are no obstacles.

(作 用) 本発明の現像装置によれば、現像ローラ周面上に形成さ
れた現像剤には、現像ローラ周面の端部へ向かう力は働
かず、また、ホッパ内の現像剤は、規制部材、サイドフ
レームおよび固定部材がそれぞれ固定されているため、
現像剤を搬送する能力もない。したがって、前記規制部
材とサイドフレームの間や規制部)」と固定部材との間
がらの現像剤の流出は容易に防止される。現像ローラと
固定部材との間は、現像ローラの回転により現像剤を搬
送する能力かあるが、搬送力の方向が放射状外向きなの
で、現像剤は容易に通過できない。
(Function) According to the developing device of the present invention, a force directed toward the end of the developing roller circumferential surface does not act on the developer formed on the developing roller circumferential surface, and the developer in the hopper is Since the regulating member, side frame and fixing member are each fixed,
It also does not have the ability to transport developer. Therefore, developer is easily prevented from flowing out between the regulating member and the side frame or between the regulating member and the fixing member. Although there is the ability to transport the developer between the developing roller and the fixed member by the rotation of the developing roller, the direction of the transporting force is radially outward, so the developer cannot easily pass through.

しかして、本発明においては、同定部(」は、サイドフ
レーム側面に固定され、その外径は現像ローラよりも大
きく、その硬度は現像ローラよりも小さくしであるため
、規制部材と固定部材の間には、現像剤の流出を防止す
るのに充分な密着力(圧接力)か働き、現像ローラか機
械的誤差を生じても、その弾性により柔軟に対応し、現
像剤を封止する。
Therefore, in the present invention, the identification part (") is fixed to the side surface of the side frame, and its outer diameter is larger than that of the developing roller, and its hardness is smaller than that of the developing roller, so that the regulating member and the fixing member are Sufficient adhesion force (pressure contact force) acts between them to prevent the developer from flowing out, and even if a mechanical error occurs in the developing roller, its elasticity flexibly responds and seals the developer.

また、そのときに、現像ローラと規制部材との間の圧接
力には影響か及ばないため画質の劣化も起らない。
Further, at this time, since the pressing force between the developing roller and the regulating member is not affected, the image quality does not deteriorate.

しかも、現像装置の駆動力についてみると、本発明の場
合、現像剤のこほれは主に固定部材と現像ローラとの間
てその11■能性あるか、前述の如く、現像剤の搬送力
の方向は放射状であるので従来の密着力よりも弱くてよ
い。また、仮に同程度の密着力で抑圧した場合でも、回
転中心に近い面での抑圧なので、ローラの回転)・ルク
は小さくなる。
Moreover, when looking at the driving force of the developing device, in the case of the present invention, the developer is mainly caused to break down between the fixing member and the developing roller. Since the direction is radial, the adhesion force may be weaker than that of conventional adhesives. Further, even if the pressure is suppressed with the same degree of adhesion force, the rotation torque of the roller will be small because the suppression is performed on a surface close to the center of rotation.

たとえば現像ローラの外径かφ20m■lの場合では、
従来のトルクに比べl/2〜1/3になった状態でも現
像剤のこほれを防止し得る。
For example, if the outer diameter of the developing roller is φ20ml,
Even when the torque is 1/2 to 1/3 of the conventional torque, it is possible to prevent the developer from crumbling.

(実施例) 以下、第1図および第2図を参照して本発明の詳細な説
明する。
(Example) Hereinafter, the present invention will be described in detail with reference to FIGS. 1 and 2.

第1図および第2図は本発明に係る現像装置の要部構成
例を展開して示す斜N図で、第4図および第5図に示す
従来の装置と同じ部品については同一のね号を付した。
FIGS. 1 and 2 are diagonal N views showing a developed example of the configuration of the main parts of the developing device according to the present invention, and the same parts as the conventional device shown in FIGS. 4 and 5 have the same numbers. has been attached.

本実施例の基本的1111或は従来の装置と同様である
か、現像ローラーの両端部側面には、サイドフレーム5
aに固定部材8が固定・配設されている。
The basic 1111 of this embodiment or the same as that of a conventional device is provided with side frames 5 on both end sides of the developing roller.
A fixing member 8 is fixed and disposed at a.

しかして、前記現像ローラーの外径はたとえば18n+
mで、硬度は30度(JISA型)、固定部材8の外径
は19Iて硬度は7度(JISA型)であり、ポロン(
井上MTP社製)を輪状に形成したものである。
Therefore, the outer diameter of the developing roller is, for example, 18n+
m, the hardness is 30 degrees (JISA type), the outer diameter of the fixing member 8 is 19I, the hardness is 7 degrees (JISA type), and the hardness is 7 degrees (JISA type).
(manufactured by Inoue MTP) into a ring shape.

また前記ポロン製固定部+A8の表面(現像ローラと接
する部分)は潤滑性をもっており、現像装置の駆動力低
減に寄与し得る。なお、この構成では、長寿命化のため
に、現像ローラーよりも小径で外径16II1mのたと
えばテフロン製の潤滑性シール部祠7a、7bを現像ロ
ーラーの端部側面と前記ボロン製固定部材8との間に介
在させた。つまり、潤滑性シール部材祠7bを固定部材
8へ、潤滑性シール部材月7aを現像ローラ1へ接着し
た構成とした。また、潤滑性シール部材月7aには導電
性を付与して、現像ローラ1の表面とシャフトとの導通
の維持に寄与させた。そして、前記現像ローラ]と固定
部+A8とはall」滑性シール部材7a17bを介し
て抑圧一体化されており、好ましくは、固定部材8周面
をテープ部+A’ 9て図示のように囲包し、そのテー
プ部祠9を固定部材8周面に一部を露出させて接着する
。しかして、前記テープ部材9の切れ「lの部分に第2
図のように規制部材3を押圧する構成とし、さらに規制
部材3とサイトフレーム5aとの間に好ましくはスポン
ジなど充填する。ここで、潤滑シール部祠7a、7bの
外径は、現像ローラ1が規制部材3に押圧されたときの
変形を見込んだ外径とするのが好ましいが、それよりも
小径であっても、固定部材8が変形してすきまをふさぎ
、現像剤がもれることはない。
Further, the surface of the Poron fixing part +A8 (the part that comes into contact with the developing roller) has lubricating properties, which can contribute to reducing the driving force of the developing device. In this configuration, in order to extend the service life, lubricating seals 7a and 7b made of, for example, Teflon and having an outer diameter of 16II1 m and smaller in diameter than the developing roller are attached to the end side surface of the developing roller and the boron fixing member 8. interposed between. In other words, the lubricating seal member 7b is adhered to the fixing member 8, and the lubricating seal member 7a is adhered to the developing roller 1. Furthermore, the lubricating seal member 7a is provided with electrical conductivity to contribute to maintaining electrical continuity between the surface of the developing roller 1 and the shaft. The developing roller] and the fixing part +A' are integrally pressed together via a slippery seal member 7a17b, and preferably, the peripheral surface of the fixing member 8 is surrounded by the tape part +A'9 as shown in the figure. Then, the tape portion 9 is adhered to the circumferential surface of the fixing member 8 with a part thereof exposed. Therefore, a second
As shown in the figure, the structure is such that the regulating member 3 is pressed, and preferably a sponge or the like is filled between the regulating member 3 and the sight frame 5a. Here, the outer diameter of the lubricating seal parts 7a and 7b is preferably set to an outer diameter that allows for deformation when the developing roller 1 is pressed against the regulating member 3, but even if the outer diameter is smaller than that, The fixing member 8 deforms and closes the gap, preventing developer from leaking.

なお、上記図において、2は!・ナー供給ローラで導電
性のウレタンフオームから+M成されており、0 10はスポンジの上にマイラーを接着し、マイラー面が
現像ローラ1と固定部材8あるいはテープ部材9と接す
るようにしたりカバリ一部月である。
In addition, in the above figure, 2 is!・The toner supply roller is made of conductive urethane foam made of +M, and 010 is made by gluing mylar onto the sponge so that the mylar surface is in contact with the developing roller 1 and the fixing member 8 or the tape member 9, or by making a cover. It's Bugetsu.

次に、要部構成を展開して斜視的に示す第3図を参照し
て、本発明に係る現像装置の他の実施例を説明する。第
1図および第2図とほぼ同じ構成を成しているが、トナ
ー供給ローラ2の長さを現像ローラ1よりも両端側を3
〜15o++aづつ短かくしである。これにより、現像
剤が現像ローラ1の両端部には供給されにくくなり、よ
り確実にこぼれを防止できるばかりでなく、駆動力も小
さくできる。また、トナー供給ローラ2と、サイドフレ
ーム5aとの間に第2の固定部材11を設け、現像ロー
ラ1の端部へ現像剤が供給されるのを容品にかつ確実に
防ぐことができる。
Next, another embodiment of the developing device according to the present invention will be described with reference to FIG. 3, which shows an exploded and perspective view of the main structure. The configuration is almost the same as in FIGS. 1 and 2, but the length of the toner supply roller 2 is set to 3 on both ends of the developing roller 1.
It is a short comb of ~15o++a. This makes it difficult for the developer to be supplied to both ends of the developing roller 1, and not only can spillage be more reliably prevented, but also the driving force can be reduced. Furthermore, by providing the second fixing member 11 between the toner supply roller 2 and the side frame 5a, it is possible to safely and reliably prevent the developer from being supplied to the end of the developing roller 1.

[発明の効果] 上記説明したごとく構成され本発明に係る現像装置によ
れば、現像ローラが機械的誤差を生じた場合や現像ロー
ラが弾性体の場合でも、比較的小さな駆動力で現像ロー
ラなどを駆動し得るばかり1 でなく、現像ローラと現像剤を収容するホッパのサイド
フレームとの対接領域や、あるいは現像ローラと規制部
材との対接領域から現像剤がこほれたりすることのない
現像装置として常に機能する。
[Effects of the Invention] According to the developing device according to the present invention configured as described above, even if the developing roller has a mechanical error or is made of an elastic body, the developing roller, etc. can be moved with a relatively small driving force. Not only can the developer be driven, but the developer can also be prevented from spilling from the contact area between the developing roller and the side frame of the hopper that accommodates the developer, or the contact area between the developing roller and the regulating member. Always functions as a developing device.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図および第2図は本発明に係る一成分現像装置の要
部構成例をそれぞれ展開して示す斜視図、第3−は本発
明に係る一成分現像装置の他の要部構成例を展開して示
す斜視図、第4図および第5図は、従来の現像装置の要
部構成を示すもので第4図は一部切欠断面図、第5図は
斜視図である。 1・・・現像ローラ 2・・・トナー供給ローラ 3・・・規制部材 4・・・支持部材 5・・・ホッパ一部材 5a・・・サイドフレーム 6・・現像剤 7・・・シール祠  2 7a、7b・・・潤滑性シール部材 8・・・固定部材 9・・・テープ材 10・・・リカバリ一部材 11・・・第2の固定部材
1 and 2 are exploded perspective views showing examples of the configuration of main parts of a one-component developing device according to the present invention, and FIG. The exploded perspective view, FIGS. 4 and 5 show the main structure of a conventional developing device, with FIG. 4 being a partially cutaway sectional view and FIG. 5 being a perspective view. 1...Developing roller 2...Toner supply roller 3...Regulating member 4...Supporting member 5...Hopper member 5a...Side frame 6...Developer 7...Seal shrine 2 7a, 7b...Lubricating seal member 8...Fixing member 9...Tape material 10...Recovery member 11...Second fixing member

Claims (1)

【特許請求の範囲】 弾性を有する現像ローラ周面に、一側面が前記現像ロー
ラ側面に対接するサイドフレームを備えたホッパー内の
現像剤を供給し、規制部材により前記現像ローラ周面上
に現像剤の薄層を形成すると共に電荷を与え、これを静
電潜像保持体に近接し、該静電潜像上に現像剤を付着せ
しめて可視像に現像する現像装置において、 前記現像ローラ側面とサイドフレームとの間に、現像ロ
ーラよりも硬度が低く外径の大きい固定部材をサイドフ
レームに固定配設しかつ、前記規制部材によりこの固定
部材が押圧されるよう構成したことを特徴とする現像装
置。
[Scope of Claims] A developer is supplied to the circumferential surface of the developing roller having elasticity in a hopper equipped with a side frame, one side of which is in contact with the side surface of the developing roller, and a regulating member is used to develop the developer onto the circumferential surface of the developing roller. In a developing device that forms a thin layer of a developer and applies an electric charge, brings it close to an electrostatic latent image carrier, and causes a developer to adhere to the electrostatic latent image to develop it into a visible image, the developing roller A fixing member having a lower hardness and a larger outer diameter than the developing roller is fixed to the side frame between the side surface and the side frame, and the fixing member is pressed by the regulating member. developing device.
JP1280859A 1989-10-26 1989-10-26 Developing device Pending JPH03140980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1280859A JPH03140980A (en) 1989-10-26 1989-10-26 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1280859A JPH03140980A (en) 1989-10-26 1989-10-26 Developing device

Publications (1)

Publication Number Publication Date
JPH03140980A true JPH03140980A (en) 1991-06-14

Family

ID=17630967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1280859A Pending JPH03140980A (en) 1989-10-26 1989-10-26 Developing device

Country Status (1)

Country Link
JP (1) JPH03140980A (en)

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