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JPS61221769A - Developing device - Google Patents

Developing device

Info

Publication number
JPS61221769A
JPS61221769A JP60061836A JP6183685A JPS61221769A JP S61221769 A JPS61221769 A JP S61221769A JP 60061836 A JP60061836 A JP 60061836A JP 6183685 A JP6183685 A JP 6183685A JP S61221769 A JPS61221769 A JP S61221769A
Authority
JP
Japan
Prior art keywords
toner
developing device
flexible
developer carrier
movable
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
JP60061836A
Other languages
Japanese (ja)
Inventor
Masahiro Hosoya
雅弘 細矢
Shigeru Fujiwara
茂 藤原
Tsutomu Uehara
上原 勤
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
Original Assignee
Toshiba Corp
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
Priority to JP60060928A priority Critical patent/JPH0646331B2/en
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP60061836A priority patent/JPS61221769A/en
Priority to KR1019860002004A priority patent/KR900001047B1/en
Priority to US06/844,373 priority patent/US4866480A/en
Priority to DE8686302265T priority patent/DE3664169D1/en
Priority to EP86302265A priority patent/EP0196231B1/en
Priority to EP88107899A priority patent/EP0306618B1/en
Priority to DE8888107899T priority patent/DE3687461T2/en
Publication of JPS61221769A publication Critical patent/JPS61221769A/en
Pending legal-status Critical Current

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  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To form stably an image of high quality having uniform and sufficient density and high resolving power by a one-component developer consisting exclusively of nonmagnetic toner, by providing a flexible applying member in the direction opposed to the moving direction of a movable developer carrying body. CONSTITUTION:A flexible applying member 2 is welded under pressure in the direction reverse to the rotating direction of a carrying body roll 1, and a wedge-shaped part is made as small as possible, by which it is prevented that a nonmagnetic toner 4 is pushed in large quantities into this wedge-shaped part. Accordingly, even if a pressure welding force to the carrying body roll 1 of the flexible applying member 2 is comparatively small, a thin layer of the nonmagnetic toner 4 can be formed stably. In this regard, that which is used for the flexible applying member 2, a metallic plate having elasticity will suffice, and especially, in case when a phosphor bronze plate has been used, it is desirable to set its thickness to 0.1-0.4mm from the viewpoint of formation of the toner thin layer of a correct thickness and giving a correct toner charging cation quantity. It is because it is important for the formation of the toner thin layer and the toner charging to obtain suitable pressure welding force and nip width.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は現像装置に関し、詳しくは電子写真装置又は静
電記録装置において、感光体もしくは誘電体上に形成さ
れた静電潜像を非磁性トナーのみからなる一成分現像剤
によって可視像化する現像装置の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a developing device, and more specifically, in an electrophotographic device or an electrostatic recording device, an electrostatic latent image formed on a photoreceptor or a dielectric material is transferred to a non-magnetic toner. The present invention relates to an improvement in a developing device that visualizes images using a one-component developer consisting of only one component.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

この種の現像装置は、トナーとキャリヤからなる二成分
現像剤を用いるもの、磁性トナーのみからなる一成分現
偉剤を用いるものと技術的な進歩がなされ、更に磁性ト
ナーのみからなる一成分現偉剤の欠点を解消しえる非磁
性トナーのみからなる一成分現儂剤を用いる現像装置へ
と発展している。しかしながら、非磁性トナーを使用し
ているがゆえに1均一なトナー薄層を可動現像剤担持体
表面に安定的に形成することが困難であるという唯一の
大きな問題を有し、そのために実用化が阻まれていた。
Technological advances have been made in this type of developing device, including those using a two-component developer consisting of toner and carrier, and those using a single-component developer consisting only of magnetic toner. Developing devices have been developed that use a one-component developer consisting only of non-magnetic toner, which can eliminate the drawbacks of conventional toners. However, since non-magnetic toner is used, the only major problem is that it is difficult to stably form a uniform thin layer of toner on the surface of the movable developer carrier, which makes it difficult to put it into practical use. It was blocked.

このようなことから、本発明者らは既に特願昭58−1
82743号に記載したように第2図に示す現像装置を
発明し、非磁性トナーの薄層形成を可能ならしめること
に成功した。かかる発明は、可動現像剤担持体としての
表面に凹凸を有する担持体ロール1に可撓性塗布部材2
をその自由端、つまり現像剤の流れの下流側に位置する
エッヂを除く面が前記担持体ロール1に圧接するように
配設することによって、例えばトナー容器3から供給さ
れた非磁性のトナー4を前記金属板ブレード2により担
持体ロール1表面に塗布してトナー薄層を形成し、これ
を潜像保持体としての感光ドラム5に対向させてその静
電潜像を現像する装置である。
For these reasons, the inventors have already filed a patent application in
As described in No. 82743, he invented a developing device shown in FIG. 2, and succeeded in making it possible to form a thin layer of non-magnetic toner. In this invention, a flexible coating member 2 is attached to a carrier roll 1 which serves as a movable developer carrier and has an uneven surface.
By arranging the free end, that is, the surface excluding the edge located on the downstream side of the developer flow, in pressure contact with the carrier roll 1, the non-magnetic toner 4 supplied from the toner container 3, for example. This is an apparatus for forming a thin toner layer by applying the toner on the surface of the carrier roll 1 using the metal plate blade 2, and developing the electrostatic latent image by facing the photosensitive drum 5 as a latent image holder.

しかしながら、本発明者らのその後の実験により前述し
た現像装置には以下に示す問題点があることが判った。
However, subsequent experiments by the present inventors revealed that the above-mentioned developing device had the following problems.

通常は80μm以上の厚さのトナー薄層を得ている。Usually, a thin toner layer with a thickness of 80 μm or more is obtained.

そのため十分な画像濃度は得られるものの、加えられた
圧接力がトナーにも伝わって解像力やカプリの問題が生
じた。そしてトナー薄層をより薄くするため、可撓性塗
布部材2の圧接力を増すと、確かに薄い層を形成するこ
とは出来るが、さらにトナーの凝集、凝固が生じゃすく
なシ、トナーに施す滞電も望ましくない逆の極性の電荷
をおびやすかった。よって、長い期間にわたって均一な
トナー薄層の形成を維持することは困難となって、その
結果高品質の画像を安定に形成するのが難かしかった。
Therefore, although sufficient image density can be obtained, the applied pressing force is also transmitted to the toner, causing problems in resolution and capri. In order to make the toner thin layer thinner, it is possible to form a thinner layer by increasing the pressure applied by the flexible coating member 2, but it is possible to form a thinner layer, but it is also difficult to cause aggregation and coagulation of the toner. Charge stagnation was also susceptible to undesirable opposite polarity charges. Therefore, it has become difficult to maintain the formation of a uniform thin toner layer over a long period of time, and as a result, it has been difficult to stably form high-quality images.

〔発明の目的〕[Purpose of the invention]

本発明は非磁性トナーのみからなる一成分現像剤により
均一で充分な濃度、高い解像力を持つ高品質な画像を安
定に形成し得る現像装置を提供することを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide a developing device that can stably form high-quality images with uniform, sufficient density, and high resolution using a single-component developer consisting only of non-magnetic toner.

〔発明の概要〕[Summary of the invention]

本発明の現像装置は、表面に非磁性トナーのみから成る
一成分現偉剤を担持して移動し、該現像剤を静電潜像に
供給する可動現像剤担持体と、咳可動現像剤担持体の表
面に前記現像剤の薄層を形成すべく圧接配置された弾性
金属板より成る可撓性塗布部材とを有し、 前記可撓性塗布部材自由端が、前記可動現像剤担持体の
移動の方向に対向する向きに前記可撓性塗布部材を配設
したことを特徴としているd以下、本発明を第1図によ
り詳細に説明する。
The developing device of the present invention includes a movable developer carrier that carries a one-component developer consisting only of non-magnetic toner on its surface and supplies the developer to an electrostatic latent image, and a movable developer carrier. a flexible application member made of an elastic metal plate placed in pressure contact with the surface of the body to form a thin layer of the developer, the free end of the flexible application member being connected to the surface of the movable developer carrier; The present invention is characterized in that the flexible application member is disposed in a direction opposite to the direction of movement.The present invention will be described in detail below with reference to FIG.

図中の1は回転可能に支持された可動現像担持体として
の担持体ロールであり、このロール10表面(局面)は
凹凸粗面化がなされている。可撓性塗布部材2の自由端
は図に示すように担持体ロール10回転方向と対向する
向きに配設され、その先端が担持体ロールIK当らない
ように圧接されている。トナー容器3には非磁性トナー
のみからなる一成分現偉剤4が収納されており、表面に
凹凸を有する担持体ロール10回転により、担持体ロー
ル1と可撓性塗布部材2とで形成される小さな楔状の部
分へ送りこまれる。ここにおいて、圧接され九可撓性塗
布部材2による阻止力と、担持体ロールlによる搬送力
の作用とによりトナー集合体が剪断され、トナー薄層が
形成される。これと同時に可撓性塗布部材2の下を通過
した非磁性トナー4は可撓性塗布部材2との摩擦により
帯電し所定の電荷を得る。電荷を得た非磁性トナー4は
、静電的に担持体ロールIK付着し、担持体口−ル1の
回転により、感光体5と近接する現像部へと搬送される
。感光体5には、通常艮〈知られている方法で静電潜像
が形成されており、この潜像電位と担持体ロールIKバ
イアス電源7によって印加されている電位とで構成され
る電場により、先に記したように電荷を得た非磁性トナ
ー4は、担持体ロール1から感光体5へと移行、現像が
行なわれる。現像部で現像を行なわず、担持体ロールへ
残留した非磁性トナー4は、可撓性の回収ブレード6と
担持体ロール1との間を通過しトナー容器3へ回収され
る。特に本発明の現像装置では、可撓性塗布部材2を担
持体ロール1の回転方向に逆向きで圧接し、楔状の部分
をできるだけ小さくするととくより、この楔状部分へ非
磁性トナー4が多量に押し込まれることを防止した。こ
れにより、可撓性塗布部材2の担持体ロール1への圧接
力が比較的小さくても、非磁性トナー4の薄い層が安定
に形成できるようになった。なお、可撓性塗布部材2に
用いるのは弾性を有する金属板であればよく、例えばス
テンレス板、リン青銅板が挙げられる。こうした塗布部
材のうち、 !にニリン腎銅板を用いた場合、その厚さ
は0.1〜0.4111とすることが適正な厚さのトナ
ー薄層の形成及び適正なトナー帯電量を付与するという
観点から望ましい。
Reference numeral 1 in the figure denotes a carrier roll as a movable developer carrier that is rotatably supported, and the surface (curved surface) of this roll 10 is roughened. As shown in the figure, the free end of the flexible application member 2 is disposed in a direction opposite to the direction of rotation of the carrier roll 10, and is pressed against the carrier roll IK so that its tip does not come into contact with the carrier roll IK. The toner container 3 stores a one-component developing agent 4 made of only non-magnetic toner, which is formed by the carrier roll 1 and the flexible coating member 2 by rotating the carrier roll 10 with an uneven surface 10 times. It is fed into a small wedge-shaped part. At this time, the toner aggregate is sheared by the blocking force of the flexible application member 2 and the conveying force of the carrier roll 1, and a thin toner layer is formed. At the same time, the non-magnetic toner 4 passing under the flexible coating member 2 is charged by friction with the flexible coating member 2 and acquires a predetermined electric charge. The charged non-magnetic toner 4 is electrostatically adhered to the carrier roll IK, and is conveyed to the developing section adjacent to the photoreceptor 5 by rotation of the carrier hole 1. An electrostatic latent image is usually formed on the photoreceptor 5 by a known method, and an electric field consisting of the potential of this latent image and the potential applied by the carrier roll IK bias power supply 7 is used. As described above, the non-magnetic toner 4, which has acquired an electric charge, is transferred from the carrier roll 1 to the photoreceptor 5, where development is performed. The non-magnetic toner 4 remaining on the carrier roll without being developed in the developing section passes between the flexible collection blade 6 and the carrier roll 1 and is collected into the toner container 3. In particular, in the developing device of the present invention, the flexible application member 2 is pressed against the rotational direction of the carrier roll 1, and the wedge-shaped portion is made as small as possible. Prevented from being pushed. As a result, a thin layer of non-magnetic toner 4 can be stably formed even if the pressing force of the flexible coating member 2 against the carrier roll 1 is relatively small. Note that any metal plate having elasticity may be used as the flexible coating member 2, and examples thereof include a stainless steel plate and a phosphor bronze plate. Among these coating materials, ! When a Nilinki copper plate is used, it is desirable that the thickness is 0.1 to 0.4111 from the viewpoint of forming a thin toner layer with an appropriate thickness and imparting an appropriate amount of charge to the toner.

これは適当な圧接力とニップ巾を得ることが、トナー薄
層の形成と、トナー帯電にとって重要だからである。担
持体ロール1に圧接され九可撓性塗布部材2はあるニッ
プ巾をもって圧接しているが、接触位置としてこのニッ
プ巾の中心をとりそのニップ巾の中心から可撓性塗布部
材2の自由端までの長さく図中aで示す部分)を1n以
上5H以下の範囲に規定することが好ましい。これは、
可撓性塗布部材2の自由端が担持体ロールlに圧接する
と、均一なトナー薄層の形成が、高い機械的精度のもと
においても極めて困難になること、また、長くとりすぎ
ることKよって楔状部分が必要以上に増加することの両
方を防止するためである。このような状況下において、
可撓性塗布部材2の担持体ロール1への圧接力は10p
/cIL以上1ooII/crlt以下の範囲で設定す
ると、極めて薄くかつ均一なトナー薄層が形成できる。
This is because obtaining appropriate pressure contact force and nip width is important for forming a thin toner layer and for toner charging. The flexible application member 2 is pressed against the carrier roll 1 with a certain nip width, and the contact point is the center of this nip width, and the free end of the flexible application member 2 is moved from the center of the nip width. It is preferable that the length up to (the part indicated by a in the figure) be defined in the range of 1n or more and 5H or less. this is,
If the free end of the flexible applicator member 2 comes into pressure contact with the carrier roll l, it becomes extremely difficult to form a uniform thin layer of toner even with high mechanical precision, and also because it is too long. This is to prevent the wedge-shaped portion from increasing more than necessary. Under such circumstances,
The pressing force of the flexible application member 2 to the carrier roll 1 is 10p.
When set within the range of /cIL or more and 1ooII/crlt or less, an extremely thin and uniform toner thin layer can be formed.

ここでの圧接力とは担持体ロールの中心軸と平行な方向
く測った長さ11当りの圧力である。この圧接力を10
9/an未満にすると、塗布部材2による阻止力(圧接
力下をトナーが通過することを阻止しようとする力)が
小さいため、トナー集合体は充分な薄層に剪断されない
状態で圧接力下を通過し、そのため担持体ロール表面に
形成されるトナー薄層の厚みが増す。
The pressing force here is the pressure per length 11 measured in a direction parallel to the central axis of the carrier roll. This pressure contact force is 10
If it is less than 9/an, the blocking force (the force that tries to prevent the toner from passing under the pressure force) by the application member 2 is small, so the toner aggregate is not sheared into a sufficiently thin layer and is not sheared under the pressure force. , thereby increasing the thickness of the thin toner layer formed on the surface of the carrier roll.

その結果、画像濃度は増すものの、塗布部材2との摩擦
帯電にあずからない未帯電トナーも増加し、これによる
地力プリが発生したり、解像力が低下したりする。一方
、圧接力が100.lit/c*を越えると、トナー薄
層が極端に薄くなり充分な画像濃度が得られなくなる。
As a result, although the image density increases, the amount of uncharged toner that does not participate in frictional charging with the application member 2 also increases, resulting in the occurrence of ground forces and a decrease in resolution. On the other hand, the pressure contact force is 100. If it exceeds lit/c*, the toner thin layer becomes extremely thin and sufficient image density cannot be obtained.

更に、図中の6は現像されずに担持体ロール1の表面に
残留するトナーを回収する可撓性のブレードであり、塗
布部材1と同じように、その自由端は担持体ロール1に
接れることのないようにして圧接されている。このとき
の圧接力は塗布部材1の圧接力より小さいことが好まし
い。プラスチックのフィルム、ゴム、金属の薄い板など
が使用できる。またこの回収ブレード6は、トナー容器
3からトナー4がこぼれ落ちるのを防止する役目もある
Furthermore, 6 in the figure is a flexible blade that collects the toner remaining on the surface of the carrier roll 1 without being developed, and its free end is in contact with the carrier roll 1 in the same way as the application member 1. They are pressed together so that they will not be damaged. The pressing force at this time is preferably smaller than the pressing force of the application member 1. Plastic films, rubber, thin metal plates, etc. can be used. The collection blade 6 also serves to prevent the toner 4 from spilling from the toner container 3.

更に図中の7は担持体ロールlと金属板からなる可撓性
塗布部材2とにバイアス電圧を印加するための電源であ
り、5は担持体ロール1に対向配置された潜像保持体と
してのセレン感光ドラムである。感光体の表面電位は+
400〜+900Vの範囲テアリ、バー(7−XIK圧
は、DCカ+100〜200V 。
Furthermore, 7 in the figure is a power source for applying a bias voltage to the carrier roll l and the flexible coating member 2 made of a metal plate, and 5 is a latent image holding member disposed opposite to the carrier roll 1. This is a selenium photosensitive drum. The surface potential of the photoreceptor is +
The range is 400 to +900V (7-XIK pressure is DC +100 to 200V.

ACカVpp= 1.5〜2.OKV (1〜3 KH
z ) O範囲で重畳。
AC power Vpp=1.5~2. OKV (1~3 KH
z) Superimposed in O range.

印加すると良好な画像が得られる。また、感光体5と担
持体ロール1との間@(図中すで示す)は0.15〜0
.25a+の範囲にあり、トナー薄層とは非接触である
ことが好ましい。
When applied, a good image can be obtained. Also, the distance between the photoreceptor 5 and the carrier roll 1 (already shown in the figure) is 0.15 to 0.
.. 25a+ and is preferably in a non-contact with the toner thin layer.

またかかる構成の現像装置において、担持体ロール10
表面はJIS規格1o点平均粗す(JI8−BO601
)Kよる表示で0.3μmRz以上5.0μmaz以下
の範囲に規定することにより、均一なトナー薄層が得ら
れ、その結果高品質の画像を安定に維持できる。
Further, in the developing device having such a configuration, the carrier roll 10
The surface is roughened to JIS standard 1o point average roughness (JI8-BO601
) By specifying Rz in the range of 0.3 μm or more and 5.0 μm or less in terms of K, a uniform thin toner layer can be obtained, and as a result, a high-quality image can be stably maintained.

これは担持体ロール1の表面粗さが5μ+n1Lzをこ
えると非磁性トナー4に対する搬送力が増加して比較的
厚いトナー層が形成される。この結果、得られる画像は
高い画像濃度となるが、カブリが発生しやすく、また解
像力が低下する。一方その表面粗さが0.3μmFLz
未満だと非磁性トナー4に対する搬送力が低下するため
、均一なトナー薄層が形成し難たくなる。また表面粗さ
が5μm a zをこえる場合でも可撓性塗布部材2の
現像ロール1への圧接力を強くすれば、比較的良好なト
ナー薄層が形成できるが、この場合は非磁性トナー4の
凝集、あるいは固着がさらに生じやすい。
This is because when the surface roughness of the carrier roll 1 exceeds 5μ+n1Lz, the conveying force for the non-magnetic toner 4 increases and a relatively thick toner layer is formed. As a result, the resulting image has a high image density, but fogging is likely to occur and the resolution is reduced. On the other hand, its surface roughness is 0.3μmFLz
If it is less than that, the conveying force for the non-magnetic toner 4 will be reduced, making it difficult to form a uniform toner thin layer. Furthermore, even when the surface roughness exceeds 5 μm a z, a relatively good toner thin layer can be formed by increasing the pressing force of the flexible coating member 2 against the developing roll 1; however, in this case, the non-magnetic toner 4 agglomeration or adhesion is more likely to occur.

以上説明してきたように本発明は、塗布部材2の担持体
ロール1への圧接力を弱めてトナーの凝集、固着を防止
し、なおかつ均一に帯電したトナー薄層を形成して極め
て品質のよい複写画像を、非磁性トナーのみよりなる一
成分現像剤で実現するものであるが、トナー薄層の厚さ
、およびトナー帯電量も画像品質を左右する重要な因子
である。
As explained above, the present invention weakens the pressing force of the application member 2 to the carrier roll 1 to prevent toner agglomeration and adhesion, and forms a uniformly charged toner thin layer to achieve extremely high quality. Copied images are realized using a one-component developer consisting only of non-magnetic toner, and the thickness of the thin toner layer and the amount of toner charge are also important factors that affect the image quality.

本発明による装置を用いて、詳細な検討を行なっ良好な
画質を得られることが判った。80μmを越えたトナー
層であると、画像濃度は高くなるが、同時にカブリやす
く、解像力も低下する。また、10μm未満では画像濃
度が急激に低下する。この中でも特に20〜60μmの
範囲が良好である。また帯電量は20μC/、9を越え
ると現像しにくくなり、画像濃度が低下する。2μC/
、9  に満たない場合はカプリの発生が著しくなる。
Detailed studies have shown that good image quality can be obtained using the device according to the invention. If the toner layer exceeds 80 μm, the image density will be high, but at the same time, fogging will occur easily and the resolution will also decrease. Furthermore, if the thickness is less than 10 μm, the image density will decrease rapidly. Among these, a range of 20 to 60 μm is particularly good. Furthermore, if the charge amount exceeds 20 μC/.9, development becomes difficult and image density decreases. 2μC/
, less than 9, the occurrence of capri becomes significant.

なおトナーの厚みは光学顕微鏡を用い、帯電量は吸引ブ
ローオフ法による測定に基づいている。
The thickness of the toner was measured using an optical microscope, and the amount of charge was measured using a suction blow-off method.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の実施例を第1図を用いて説明する。 Embodiments of the present invention will be described below with reference to FIG.

可動現像剤担持体として反時計回り方向に回転可能に支
持された直径40JElのアルミニウム製担持体ロール
1を用いた。なお、この担持体ロール1の表面は、鏡面
加工をした後、サンドブラスト処理を行ない、さらに無
電解ニッケルメッキを10μmの厚さで施すことにより
、JI810点平均粗さによる表示で0.68μmの凹
凸粗面が形成されている。
As a movable developer carrier, an aluminum carrier roll 1 having a diameter of 40 JEl and supported rotatably in a counterclockwise direction was used. The surface of the carrier roll 1 is polished to a mirror finish, sandblasted, and electroless nickel plated to a thickness of 10 μm, resulting in an unevenness of 0.68 μm in JI810 average roughness. A rough surface is formed.

また、可撓性塗布部材2として厚さ0.211のリン青
銅板を用いた。このリン青銅板はその自由端を除く[(
腹の面)が担持体ロールlに圧接している。
Further, as the flexible application member 2, a phosphor bronze plate with a thickness of 0.211 mm was used. This phosphor bronze plate except its free end [(
The belly surface) is in pressure contact with the carrier roll l.

図中aで示す部分は2fllK設定した。圧接力は70
777cmである。潜像保持体としてセレン感光体ドラ
ム5を用いた。更にトナー容器3に収容される非磁性ト
ナー4としてポリエステル、カーボン。
The part indicated by a in the figure was set to 2fllK. Pressure force is 70
It is 777cm. A selenium photosensitive drum 5 was used as a latent image holder. Further, the non-magnetic toner 4 contained in the toner container 3 is polyester or carbon.

帯電制御剤等を含む平均11.3μmのものを用いた。A material containing a charge control agent and the like having an average diameter of 11.3 μm was used.

感光体ドラム5と担持体ロール1の回転周速は110m
/sec 、間Pi!bは0.2111である。担持体
ロール1と塗布部材2とに印加したバイアス電位は、D
C2>1+150V 、 ACカVpp=1.8KVテ
2KHz テS ル。
The rotational circumferential speed of the photoreceptor drum 5 and carrier roll 1 is 110 m.
/sec, between Pi! b is 0.2111. The bias potential applied to the carrier roll 1 and the application member 2 is D
C2>1+150V, AC power Vpp=1.8KV 2KHz TeS Le.

上述した構成の現像装置において、非磁性トナー4によ
る薄層を形成したところトナー層の厚さは52.7μm
、また吸引プローオフ法による帯!量は−5,5μC/
、9であった。こうして形成されたトナー薄層を担持体
ロールlに対向配置されたセレン感光体ドラム5に非接
触現像を行ない、良く知られている方法で普通紙へ転写
・定着させた。画像濃度は1.40.解像力51ine
 pairs/n+ カプリは全く認められなかった。
In the developing device configured as described above, when a thin layer of non-magnetic toner 4 was formed, the thickness of the toner layer was 52.7 μm.
, Also by the suction pull-off method! The amount is -5.5μC/
, 9. The thus formed toner thin layer was developed in a non-contact manner on a selenium photosensitive drum 5 placed opposite the carrier roll 1, and was transferred and fixed onto plain paper by a well-known method. Image density is 1.40. Resolution 51ine
pairs/n+ Capri was not recognized at all.

またランニングテストを行なったところ40,000枚
の複写を行なったのちでも画質になんらの変化も認めら
れなかった。
Further, when a running test was conducted, no change in image quality was observed even after 40,000 copies were made.

同じ現像装置において、担持体ロール1を表面粗さ5.
9μmRwのロールに変えた外は同じ条件で現像を行な
ったところトナー厚さが120μmとなり画像濃度は1
.50と高濃度であったが、カブリの発生が認められ、
また解像力も3.21ine pairs/xmと低下
した。このような条件において、塗布部材2の担持体ロ
ール1に対する圧接力を250I/crILに設定しな
おしたところ、トナー厚さは73μmになり、カプリの
発生、解像力の低下は防止することができた。しかしな
がらランニングテストを実施したところ約30,000
枚の複写で、トナーの凝集体が発生、トナーの薄い均一
な層の形成が困難となった。
In the same developing device, the carrier roll 1 has a surface roughness of 5.
When developing under the same conditions except for changing to a 9 μm Rw roll, the toner thickness was 120 μm and the image density was 1.
.. Although the concentration was as high as 50, fogging was observed.
The resolution was also reduced to 3.21 ine pairs/xm. Under these conditions, when the pressure contact force of the application member 2 against the carrier roll 1 was reset to 250 I/crIL, the toner thickness became 73 μm, and it was possible to prevent the occurrence of capri and a decrease in resolution. . However, when we conducted a running test, it was approximately 30,000.
When copying sheets, toner aggregates occurred, making it difficult to form a thin, uniform layer of toner.

〔発明の効果〕〔Effect of the invention〕

以上詳述した如く、本発明によれば非磁性トナ−のみか
らなる−成分現像剤により均一で充分な濃度をもつ高品
質な画像を安定に形成できる現像装置を得ることができ
、ひいてはこの現像装置を組込んだ複写機などの画像記
録装置を小型化、@量化、低価格化することができる等
顕著な効果を有する。
As described in detail above, according to the present invention, it is possible to obtain a developing device that can stably form high-quality images with uniform and sufficient density using a component developer made only of non-magnetic toner. It has remarkable effects such as being able to make image recording devices such as copying machines incorporating the device smaller, more quantifiable, and lower in price.

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

第1図は本発明の一実施例を示す現像装置の概略図、第
2図は従来の現像装置を示す概略図である。 】・・・担持体ロール(可動現像剤担持体)2・・・金
属板ブレード  4・・非磁性トナー5 感光体(潜像
保持体) 代理人 弁理士 則 近 恵 佑 (ばか1名)第  
1 図 第  2
FIG. 1 is a schematic diagram of a developing device showing an embodiment of the present invention, and FIG. 2 is a schematic diagram showing a conventional developing device. ]...Carrier roll (movable developer carrier) 2...Metal plate blade 4...Non-magnetic toner 5 Photoconductor (latent image holder) Agent Patent attorney Nori Yu Chika (1st idiot) No.
1 Figure 2

Claims (7)

【特許請求の範囲】[Claims] (1)表面に非磁性トナーのみから成る一成分現像剤を
担持して移動し、該現像剤を静電潜像に供給する可動現
像剤担持体と、該可動現像剤担持体の表面に圧接配置さ
れた弾性金属板より成る可撓性塗布部材とを有し、 前記可撓性塗布部材自由端が、前記可動現像剤担持体の
移動の方向に対向する向きに前記可撓性塗布部材を配設
したことを特徴とする現像装置。
(1) A movable developer carrier that carries a one-component developer consisting only of non-magnetic toner on its surface and supplies the developer to the electrostatic latent image; and a movable developer carrier that is pressed against the surface of the movable developer carrier. a flexible applicator made of an elastic metal plate disposed, the free end of the flexible applicator facing the direction of movement of the movable developer carrier; A developing device characterized in that:
(2)前記可撓性塗布部材の端部を除く側面が前記可動
現像剤担持体に接触するように前記可撓性塗布部材を配
設したことを特徴とする特許請求の範囲第1項記載の現
像装置。
(2) The flexible coating member is disposed such that a side surface of the flexible coating member excluding an end portion is in contact with the movable developer carrier. developing device.
(3)前記可撓性塗布部材の前記可動現像剤担持体に対
する接触位置から前記可撓性塗布部材の自由端までの距
離が、1mm以上5mm以下の範囲内にあることを特徴
とする特許請求の範囲第1項乃至第2項のいずれかに記
載の現像装置。
(3) A claim characterized in that the distance from the contact position of the flexible coating member with the movable developer carrier to the free end of the flexible coating member is within a range of 1 mm or more and 5 mm or less. The developing device according to any one of items 1 to 2.
(4)可動現像剤担持体表面の平均粗さが0.3μmR
z以上5.0μmRz以下の粗面あることを特徴とする
特許請求の範囲第1項記載の現像装置。
(4) Average roughness of the surface of the movable developer carrier is 0.3 μmR
2. The developing device according to claim 1, wherein the developing device has a rough surface with a roughness of z or more and 5.0 μm or less.
(5)可撓性塗布部材が可動現像剤担持体に10g/c
m以上100g/cm以下の圧接力で圧接配置されてい
ることを特徴とする特許請求の範囲第1項記載の現像装
置。
(5) The flexible application member is attached to the movable developer carrier at a rate of 10 g/c.
2. The developing device according to claim 1, wherein the developing device is disposed in pressure contact with a pressing force of not less than m and not more than 100 g/cm.
(6)非磁性トナーのみからなる一成分現像剤が可撓性
塗布部材により可動現像剤担持体の表面に塗布されてな
るトナー層の厚みが10μm以上80μm以下であるこ
とを特徴とする特許請求の範囲第1項記載の現像装置。
(6) A patent claim characterized in that the thickness of the toner layer formed by applying a one-component developer consisting only of non-magnetic toner to the surface of a movable developer carrier by a flexible coating member is 10 μm or more and 80 μm or less The developing device according to item 1.
(7)非磁性トナーのみからなる一成分現像剤に与えら
れる帯電量の絶対値が2μC/g以上20μC/g以下
であることを特徴とする特許請求の範囲第1項記載の現
像装置。
(7) The developing device according to claim 1, wherein the absolute value of the amount of charge applied to the one-component developer made of only non-magnetic toner is 2 μC/g or more and 20 μC/g or less.
JP60061836A 1985-03-27 1985-03-28 Developing device Pending JPS61221769A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP60060928A JPH0646331B2 (en) 1985-03-27 1985-03-27 Developing device manufacturing method
JP60061836A JPS61221769A (en) 1985-03-28 1985-03-28 Developing device
KR1019860002004A KR900001047B1 (en) 1985-03-27 1986-03-18 Developing apparatus
US06/844,373 US4866480A (en) 1985-03-27 1986-03-26 Developing apparatus using one-component non-magnetic toner
DE8686302265T DE3664169D1 (en) 1985-03-27 1986-03-26 Developing apparatus
EP86302265A EP0196231B1 (en) 1985-03-27 1986-03-26 Developing apparatus
EP88107899A EP0306618B1 (en) 1985-03-27 1986-03-26 Developing apparatus
DE8888107899T DE3687461T2 (en) 1985-03-27 1986-03-26 DEVELOPMENT DEVICE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60061836A JPS61221769A (en) 1985-03-28 1985-03-28 Developing device

Publications (1)

Publication Number Publication Date
JPS61221769A true JPS61221769A (en) 1986-10-02

Family

ID=13182573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60061836A Pending JPS61221769A (en) 1985-03-27 1985-03-28 Developing device

Country Status (1)

Country Link
JP (1) JPS61221769A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63218978A (en) * 1987-03-06 1988-09-12 Minolta Camera Co Ltd Electrostatic latent image developing device
JPH01114877A (en) * 1987-10-29 1989-05-08 Fuji Xerox Co Ltd One component developing device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57165866A (en) * 1981-04-07 1982-10-13 Toshiba Corp Developing device
JPS5945468A (en) * 1982-09-09 1984-03-14 Toshiba Corp Electrostatic developing device for latent image
JPS6033578A (en) * 1983-08-04 1985-02-20 Toshiba Corp Developing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57165866A (en) * 1981-04-07 1982-10-13 Toshiba Corp Developing device
JPS5945468A (en) * 1982-09-09 1984-03-14 Toshiba Corp Electrostatic developing device for latent image
JPS6033578A (en) * 1983-08-04 1985-02-20 Toshiba Corp Developing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63218978A (en) * 1987-03-06 1988-09-12 Minolta Camera Co Ltd Electrostatic latent image developing device
JPH01114877A (en) * 1987-10-29 1989-05-08 Fuji Xerox Co Ltd One component developing device

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