JPH06186843A - Developing device and process cartridge provided therewith - Google Patents
Developing device and process cartridge provided therewithInfo
- Publication number
- JPH06186843A JPH06186843A JP4342503A JP34250392A JPH06186843A JP H06186843 A JPH06186843 A JP H06186843A JP 4342503 A JP4342503 A JP 4342503A JP 34250392 A JP34250392 A JP 34250392A JP H06186843 A JPH06186843 A JP H06186843A
- Authority
- JP
- Japan
- Prior art keywords
- stirring member
- toner
- stirring
- container
- 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.)
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Landscapes
- Dry Development In Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、電子写真複写装置、静
電記録装置、レーザビームプリンタ等の画像形成装置に
おいて、特に現像装置内における現像剤を撹拌する機構
の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as an electrophotographic copying apparatus, an electrostatic recording apparatus and a laser beam printer, and more particularly to an improvement of a mechanism for stirring a developer in a developing apparatus.
【0002】[0002]
【従来の技術】一般に現像装置のトナー収容容器18内
にはトナーの架橋現象を防止したり、トナーを現像スリ
ーブに搬送する撹拌棒が備わっているが、トナー容器内
にトナーが残るスペース(デッド・スペース)をなくす
ために図7、図8のような撹拌棒が考案されている。2. Description of the Related Art Generally, a toner accommodating container 18 of a developing device is provided with a stirring rod for preventing a toner cross-linking phenomenon or for conveying the toner to a developing sleeve. -To eliminate the space), a stirring bar as shown in Figs. 7 and 8 has been devised.
【0003】感光ドラム16がA方向、スリーブ2がB
方向に回転すると、第1撹拌部材34はC方向に回転す
る。すると、第2撹拌部材36はヒンジ部35が回転す
ることにより、矢印Dに示すように容器18の底面に沿
って往復運動を行い、図7に示すように、トナーが残る
デッド・スペースはほとんど無くなる。The photosensitive drum 16 is in the A direction and the sleeve 2 is in the B direction.
When rotated in the direction, the first stirring member 34 rotates in the direction C. Then, the second stirring member 36 reciprocates along the bottom surface of the container 18 as indicated by the arrow D by the rotation of the hinge portion 35, and as shown in FIG. 7, there is almost no dead space in which toner remains. Lost.
【0004】しかしながら、ヒンジ部35において第1
撹拌部材34と第2撹拌部材36との摺動により、トナ
ーが圧迫されて摺られ凝集し、大粒の粗粉となることが
ある。However, in the hinge portion 35, the first
By the sliding of the stirring member 34 and the second stirring member 36, the toner may be pressed and slid to agglomerate to become a large coarse powder.
【0005】この大粒の粗粉がドラム16に供給するス
リーブ2上のトナー層厚を規制するブレード1とスリー
ブ2との間に詰まり、その詰まった地点でのスリーブ2
上のトナーコート量が減り、現像されるトナー量が減る
ために、ベタ黒画像上で白スジとなった。また、粗粉詰
まりによる白スジはヒンジ部25の位置とほぼ一致する
画像両端に多く発生した。The large-sized coarse particles are clogged between the blade 1 and the sleeve 2 which regulate the toner layer thickness on the sleeve 2 supplied to the drum 16, and the sleeve 2 at the clogged point.
Since the amount of toner coating on the upper part is reduced and the amount of toner to be developed is reduced, white lines are formed on the solid black image. In addition, many white streaks due to the clogging of coarse powder were generated at both ends of the image, which substantially coincide with the position of the hinge portion 25.
【0006】特に、フィルム定着器用に使用される低融
点トナーを用いた場合、特に35℃以上の高温環境下に
おいて、連続印刷による器内昇温により、ヒンジ部25
が50℃以上になると、低融点トナーがヒンジ部25で
高温状態のままで圧迫され、凝集し結合して大粒の粗粉
となる事故が頻発する。In particular, when a low melting point toner used for a film fixing device is used, the hinge portion 25 is heated due to the temperature rise in the device due to continuous printing especially in a high temperature environment of 35 ° C. or higher.
When the temperature is 50 ° C. or higher, the low-melting point toner is squeezed by the hinge portion 25 in a high temperature state, frequently agglomerating and binding to become a large coarse powder, and an accident frequently occurs.
【0007】尚、上述のフィルム定着器とは、紙等の記
録材上に形成されたトナー画像と接しながら記録材の搬
送速度で移動する耐熱性の定着フィルムと、パルス状に
通電発熱して定着フィルムを介して画像を加熱し、溶融
させる固定の発熱体と、前記定着フィルムを挟んで該発
熱体と加圧ローラとを圧接させる加圧機構と、から構成
させるものである。The above-mentioned film fixing device is a heat-resistant fixing film that moves at the conveying speed of the recording material while being in contact with the toner image formed on the recording material such as paper, and heat is generated in pulses to generate heat. A fixed heating element that heats and melts an image through a fixing film, and a pressing mechanism that presses the heating film and a pressure roller with the fixing film sandwiched therebetween.
【0008】しかしながら、上記定着装置では、熱損失
が少なく、かつ、ウォームアップ時間がきわめて短い利
点を有するが、この利点を十分に発揮するには、トナー
の特性に負うところが大きく、高温時に従来のトナーよ
り瞬時に溶融することが必要となる。すなわち、従来の
加熱定着ローラ方式用のトナーは定着に必要な温度が1
50〜180℃であるが、上述したフィルム定着器では
熱容量が少ないため、立ち上げ時、または連続印刷時に
与えることのできる定着温度はせいぜい120〜150
℃までである。したがって、従来より低温の120〜1
50℃で定着するトナーが、このフィルム定着器には必
要であり、このトナーを低融点トナーと呼ぶことにす
る。However, the above-mentioned fixing device has the advantages that heat loss is small and the warm-up time is extremely short, but in order to fully bring out this advantage, it depends largely on the characteristics of the toner. It is necessary to melt the toner instantly. That is, the toner for the conventional heat fixing roller system has a temperature required for fixing of 1
Although the temperature is 50 to 180 ° C., since the above-mentioned film fixing device has a small heat capacity, the fixing temperature which can be given at the time of start-up or during continuous printing is 120 to 150 at most.
Up to ℃. Therefore, the temperature is 120 to 1 which is lower than the conventional one.
A toner that fixes at 50 ° C. is required for this film fixing device, and this toner will be referred to as a low melting point toner.
【0009】ところが斯様な低融点トナーは定着温度よ
りも低温であっても、機械的圧迫を受けると凝集しやす
いという特性を有している。However, such a low-melting point toner has a characteristic that even if the toner has a temperature lower than the fixing temperature, it is apt to aggregate when subjected to mechanical pressure.
【0010】[0010]
【発明が解決しようとしている課題】本発明は、現像剤
収容容器内に、第1撹拌部材と、第1撹拌部材に連動し
て容器底面に沿って往復移動する第2撹拌部材とを配置
した現像装置で、前述したような現像剤の凝集粗粉の発
生を防止できる現像装置、及びそれを備えたプロセスカ
ートリッジを提供することを目的とする。SUMMARY OF THE INVENTION According to the present invention, a first stirring member and a second stirring member that reciprocates along the bottom surface of the container in cooperation with the first stirring member are arranged in a developer accommodating container. An object of the present invention is to provide a developing device capable of preventing the above-described aggregated coarse powder of the developer from being generated in the developing device, and a process cartridge including the developing device.
【0011】[0011]
【課題を解決する為の手段】本発明の現像装置は、現像
剤を収容した容器内に、第1撹拌部材と、この第1撹拌
部材に柔軟変形部材で連結された第2撹拌部材とを配置
し、第1撹拌部材を振り子運動させ、それに連動して第
2撹拌部材を容器底面に沿って往復運動させる現像装置
である。A developing device according to the present invention comprises a first stirring member and a second stirring member connected to the first stirring member by a flexible deformation member in a container containing a developer. In the developing device, the first stirring member is pendulum-moved, and the second stirring member is reciprocally moved along the bottom surface of the container.
【0012】また本発明のプロセスカートリッジは、現
像剤を収容した容器内に、第1撹拌部材と、この第1撹
拌部材に柔軟変形部材で連結された第2撹拌部材とを配
置し、第1撹拌部材を振り子運動させ、それに連動して
第2撹拌部材を容器底面に沿って往復運動させる現像装
置と、この現像装置によって現像される静電潜像を担持
する像担持体を備えており、画像形成装置本体に着脱可
能なプロセスカートリッジである。In the process cartridge of the present invention, the first stirring member and the second stirring member connected to the first stirring member by the flexible deforming member are arranged in the container containing the developer, and the first stirring member is arranged. The developing device is provided with a stirring member that makes a pendulum motion, and in conjunction with this, a second stirring member that reciprocates along the bottom surface of the container, and an image carrier that carries an electrostatic latent image developed by this developing device. The process cartridge is detachable from the main body of the image forming apparatus.
【0013】つまり、本発明では第1撹拌部材と第2撹
拌部材は柔軟変形部材で連結されており、第1撹拌部材
の振り子運動はこの柔軟変形部材を介して第2撹拌部材
に伝達され、この運動伝達部に従来技術のような摺動リ
ンク部がないので、例えフィルム定着器用の低融点トナ
ーを用いても、高温度環境下で粗粉が発生すること無
く、スリーブ上のトナーコート量も乱れないため、白ス
ジ画像を防ぐことができる。That is, in the present invention, the first stirring member and the second stirring member are connected by the flexible deforming member, and the pendulum motion of the first stirring member is transmitted to the second stirring member via the flexible deforming member. Since this motion transmission part does not have a sliding link part as in the prior art, even if a low melting point toner for a film fixing device is used, coarse powder is not generated in a high temperature environment, and the toner coat amount on the sleeve is Since it is not disturbed, it is possible to prevent a white streak image.
【0014】[0014]
【実施例】図1で、容器18内には磁性トナーTが収容
されている。この容器18内のトナーは矢印方向に回転
する非磁性現像スリーブ2により容器18から搬出さ
れ、矢印方向に回転する電子写真感光ドラム16に形成
された、静電潜像に付与される。EXAMPLE In FIG. 1, a magnetic toner T is contained in a container 18. The toner in the container 18 is carried out of the container 18 by the non-magnetic developing sleeve 2 that rotates in the arrow direction, and is applied to the electrostatic latent image formed on the electrophotographic photosensitive drum 16 that rotates in the arrow direction.
【0015】スリーブ2が上記潜像を現像する現像領域
に搬送するトナー層の層厚を規制する為に、図1の例で
は磁性体ブレード1がスリーブ2に対して微小間隙を介
して対向せしめられている。スリーブ内には磁石3が固
定されており、ブレード1と磁石3の磁極間に形成され
た磁界によりトナーの薄層が形成される。In order to regulate the layer thickness of the toner layer conveyed by the sleeve 2 to the developing area for developing the latent image, in the example of FIG. 1, the magnetic blade 1 is opposed to the sleeve 2 with a minute gap. Has been. The magnet 3 is fixed in the sleeve, and a thin layer of toner is formed by the magnetic field formed between the blade 1 and the magnetic pole of the magnet 3.
【0016】尚、ブレード1は非磁性ブレードでもよい
し、弾性ブレードをスリーブに圧接させてトナー層厚を
規制してもよい。The blade 1 may be a non-magnetic blade, or an elastic blade may be pressed against a sleeve to regulate the toner layer thickness.
【0017】容器1内には、軸20を中心に、実線位置
と破線位置との間を矢印の如く振り子運動する第1撹拌
部材と、容器18の底部24に案内されることにより、
容器底部24に沿って実線位置と破線位置との間を矢印
の如く往復移動する第2撹拌部材23とが配置されてい
る。In the container 1, the first stirring member which performs a pendulum motion between the solid line position and the broken line position about the shaft 20 as shown by the arrow, and by being guided by the bottom portion 24 of the container 18,
A second stirring member 23 that reciprocates between a solid line position and a broken line position as indicated by an arrow is arranged along the container bottom 24.
【0018】上記の第1撹拌部材22と第2撹拌部材2
3とは、図2にも示すように、柔軟に変形する部材2
1、換言すれば可撓性の柔軟部材21によって連結され
ている。The above-mentioned first stirring member 22 and second stirring member 2
As shown in FIG. 2, the member 3 is a member 2 that deforms flexibly.
1. In other words, they are connected by a flexible member 21 having flexibility.
【0019】図2で、第1撹拌部材22及び第2撹拌部
材23の材質はABS材(アクリルニトリル・ブタジエ
ン・スチレン共重合体)などの硬質の合成樹脂であり、
柔軟連結部21はPP材(ポリプロピレン)等の柔軟な
合成樹脂である。柔軟連結部21自身は第1撹拌部材2
2の端部と第2撹拌部材23の端部各々に対して、はめ
込み圧入方式で固定している。In FIG. 2, the material of the first stirring member 22 and the second stirring member 23 is a hard synthetic resin such as ABS material (acrylonitrile / butadiene / styrene copolymer).
The flexible connecting portion 21 is a flexible synthetic resin such as PP material (polypropylene). The flexible connecting portion 21 itself is the first stirring member 2
The end of No. 2 and the end of the second stirring member 23 are fixed by a press-fitting method.
【0020】図5は第1撹拌部材22を振り子運動(往
復揺動)させる機構の一例である。FIG. 5 shows an example of a mechanism for oscillating the first stirring member 22 (reciprocating swing).
【0021】第1撹拌部材22が固定された軸20には
レバー25が固定されている。このレバー25には矢印
方向に回転する偏心カム27が当接されていて、かつレ
バー25はばね26によって常時偏心カム27に圧接せ
しめられている。而して偏心カム27はスリーブ2の回
転と同期して回転し、これによって第1撹拌部材22が
容器18内で振り子運動し、トナーの架橋を防止し、ト
ナーをスリーブの方へと送る。A lever 25 is fixed to the shaft 20 to which the first stirring member 22 is fixed. An eccentric cam 27 that rotates in the direction of the arrow is in contact with the lever 25, and the lever 25 is constantly pressed against the eccentric cam 27 by a spring 26. Thus, the eccentric cam 27 rotates in synchronism with the rotation of the sleeve 2, whereby the first stirring member 22 makes a pendulum motion in the container 18, prevents the toner from being cross-linked, and sends the toner toward the sleeve.
【0022】柔軟連結部21自身は第1撹拌部材22が
振り子運動することにより、折れ曲がったり開いたりし
て、第1撹拌部材22の運動力を第2撹拌部材23に伝
達し、第2撹拌部材23を第1撹拌部材21の振り子運
動に連動させて前後に往復運動させる。この第2撹拌部
材23の現像器18内の底面での往復運動により、トナ
ー架橋を防止するとともに、底面の傾斜角度が緩いのに
も関わらず、低融点トナーはスリーブ2の方へと搬送さ
れる。すなわち、ほとんどデッド・スペースは無いので
ある。The flexible connecting portion 21 itself bends or opens due to the pendulum movement of the first stirring member 22, and transmits the motive force of the first stirring member 22 to the second stirring member 23, and the second stirring member 23. 23 is interlocked with the pendulum motion of the first stirring member 21 to reciprocate back and forth. The reciprocating motion of the second stirring member 23 on the bottom surface inside the developing device 18 prevents toner cross-linking, and the low melting point toner is conveyed toward the sleeve 2 in spite of the fact that the inclination angle of the bottom surface is gentle. It That is, there is almost no dead space.
【0023】第1、第2撹拌部材22、23の運動でス
リーブ2の近傍に送られたトナーは、スリーブ内の磁石
3の磁力によりスリーブ2の表面上に磁気的に吸引され
る。The toner sent to the vicinity of the sleeve 2 by the movement of the first and second stirring members 22 and 23 is magnetically attracted onto the surface of the sleeve 2 by the magnetic force of the magnet 3 in the sleeve.
【0024】また、第1撹拌部材22と第2撹拌部材2
3との柔軟連結部21では、従来のように摺動ヒンジ部
がないため、トナーの粗粉は発生せず、ブレード1とス
リーブ2の隙間に粗粉が詰まることも無く、従って、ス
リーブ上のトナーコート量も安定するのでベタ黒画像で
の白スジは発生しない。Further, the first stirring member 22 and the second stirring member 2
Since there is no sliding hinge portion in the flexible connection portion 21 with the conventional three, coarse powder of toner is not generated, and the coarse powder is not clogged in the gap between the blade 1 and the sleeve 2. Since the toner coat amount of is also stable, white stripes do not occur in a solid black image.
【0025】次に本発明の他の実施例を図3に示す。
尚、図3においては、図2において示したものと同一要
素には同一符号が符せられている。Next, another embodiment of the present invention is shown in FIG.
In FIG. 3, the same elements as those shown in FIG. 2 are designated by the same reference numerals.
【0026】図3に示す実施例の撹拌は、図2の薄板状
柔軟連結部材21の代わりに、可撓性の柔軟な太糸24
を用いている。糸24の両端は、夫々部材22、23に
縛り付けること等で固定されている。In the agitation of the embodiment shown in FIG. 3, in place of the thin plate-like flexible connecting member 21 of FIG.
Is used. Both ends of the thread 24 are fixed by binding to the members 22 and 23, respectively.
【0027】この太糸24も第1撹拌部材22が振り子
運動することにより、折れ曲がったり開いたりして、第
2撹拌部材23を前後に往復運動させる。The thick thread 24 is also bent or opened by the pendulum movement of the first stirring member 22 to reciprocate the second stirring member 23 back and forth.
【0028】また、第1撹拌部材22と第2撹拌部材2
3との連結部である糸24では、従来のように摺動ヒン
ジ部がないため、低融点トナーの粗粉は発生しない。Further, the first stirring member 22 and the second stirring member 2
Since the thread 24, which is the connecting portion with the thread 3, has no sliding hinge portion as in the conventional case, coarse powder of the low melting point toner is not generated.
【0029】尚、太糸24としては前述の如き合成樹脂
とかピアノ線等の金属弾性線材等が使用できる。As the thick thread 24, the above-mentioned synthetic resin or a metal elastic wire material such as a piano wire can be used.
【0030】更に他の実施例としてを図4に示す。尚、
図4においても、図2において示したものと同一要素に
は同一符号が符せられている。Still another embodiment is shown in FIG. still,
Also in FIG. 4, the same elements as those shown in FIG. 2 are designated by the same reference numerals.
【0031】図4に示す実施例の撹拌は、図2の柔軟連
結部材21の代わりに、第2撹拌部材23の材質をAB
S材からPP材とし、連結部29も第2撹拌部材23と
一体成型により形成したものである。In the stirring of the embodiment shown in FIG. 4, the material of the second stirring member 23 is AB instead of the flexible connecting member 21 of FIG.
The S material is changed to the PP material, and the connecting portion 29 is also integrally formed with the second stirring member 23.
【0032】この第2撹拌部材23から一体的に延長さ
れた連結部29は、その先端部が、はめ込み圧入方式
等、或いは接着等により第1撹拌部材22に固定されて
いる。The tip of the connecting portion 29 integrally extended from the second stirring member 23 is fixed to the first stirring member 22 by a fitting press-fitting method or by adhesion.
【0033】この柔軟連結部29も、第1撹拌部材22
が振り子運動することにより、折れ曲がったり開いたり
して、第2撹拌部材23を前後に往復運動させる。This flexible connecting portion 29 is also connected to the first stirring member 22.
The pendulum movement causes the second stirring member 23 to reciprocate back and forth by bending or opening.
【0034】この例でも摺動ヒンジ部がないので、粗粉
トナーの発生を防止できる。Even in this example, since there is no sliding hinge portion, it is possible to prevent the generation of coarse powder toner.
【0035】次に図6で前述の現像装置102を備えた
プロセスカートリッジ101を説明する。Next, the process cartridge 101 provided with the developing device 102 will be described with reference to FIG.
【0036】ところで、前記プロセスカートリッジ10
1は、矢印方向に回転駆動される像担持体である電子写
真感光ドラム16、該感光ドラム16の周囲に配される
コロナ放電器17、現像器103、クリーニング器19
等を支持体20に一体に組み込んでユニットとして構成
される。By the way, the process cartridge 10
Reference numeral 1 denotes an electrophotographic photosensitive drum 16 that is an image bearing member that is rotationally driven in the direction of the arrow, a corona discharger 17 arranged around the photosensitive drum 16, a developing device 103, and a cleaning device 19.
Etc. are integrally incorporated into the support 20 to form a unit.
【0037】このプロセスカートリッジ101は、画像
形成装置100の本体102に設けたガイド30に案内
されて、この本体102に着脱可能である。そして容器
18内のトナーが消費されて無くなったプロセスカート
リッジは、容器18内にトナーが充填されているプロセ
スカートリッジと交換される。The process cartridge 101 is guided by a guide 30 provided on the main body 102 of the image forming apparatus 100, and is attachable to and detachable from the main body 102. Then, the process cartridge which has been consumed and consumed in the container 18 is replaced with a process cartridge in which the container 18 is filled with toner.
【0038】次に図6に示す複写装置100の構成を概
説すると、該複写装置100は本体102内にプロセス
カートリッジ101を装着して構成され、本体102内
のプロセスカートリッジ101の上方には光学系を構成
する短焦点光学素子アレイ4及び原稿台照明ランプ5が
配され、下方には図6の右方から給紙カセット6、給紙
ローラ7、紙ガイド部材8、転写コロナ放電器9、紙搬
送路10、フィルム定着器11が順次配されている。ま
た、本体102の外部には排紙トレイ14、上面には原
稿台15が設けられている。Next, the structure of the copying apparatus 100 shown in FIG. 6 will be outlined. The copying apparatus 100 is constructed by mounting the process cartridge 101 in the main body 102, and the optical system is provided above the process cartridge 101 in the main body 102. The short focus optical element array 4 and the platen illumination lamp 5 constituting the above are arranged, and a paper feed cassette 6, a paper feed roller 7, a paper guide member 8, a transfer corona discharger 9 and a paper A transport path 10 and a film fixing device 11 are sequentially arranged. A discharge tray 14 is provided outside the main body 102, and a document table 15 is provided on the upper surface.
【0039】次に、複写装置100の作用を説明する。Next, the operation of the copying apparatus 100 will be described.
【0040】感光ドラム16の表面はコロナ放電器17
によって一様に帯電され、該感光ドラム16の表面には
前記原稿台ランプ5によって照射された原稿台15上の
原稿像が短焦点光学素子アレイ4を介して照射され、該
表面には原稿像に対応する静電像が形成され、この静電
像は現像器103のスリーブ2によって現像され現像像
として可視可される。The surface of the photosensitive drum 16 is a corona discharger 17.
Is uniformly charged, and the surface of the photosensitive drum 16 is irradiated with the original image on the original table 15 illuminated by the original table lamp 5 through the short focus optical element array 4, and the surface of the original image is illuminated. Is formed by the sleeve 2 of the developing device 103 and is visible as a developed image.
【0041】一方、前記給紙カセット6からは転写紙が
給紙ローラ7によって取り出され、取り出された転写紙
はガイド部材8に沿って感光ドラム16と転写コロナ放
電器9間に搬送される。すると、転写コロナ放電器9に
よって感光ドラム16上に形成された前記現像像が転写
紙上に転写され、この現像像の転写を受けた転写紙は搬
送路10を経てフィルム定着器11に送られ、ここで現
像像の定着を受ける。トナー像が定着された紙はトレイ
14に排出される。On the other hand, the transfer paper is taken out from the paper feed cassette 6 by the paper feed roller 7, and the taken out transfer paper is conveyed along the guide member 8 between the photosensitive drum 16 and the transfer corona discharger 9. Then, the developed image formed on the photosensitive drum 16 is transferred onto the transfer paper by the transfer corona discharger 9, and the transfer paper having the transferred developed image is sent to the film fixing device 11 via the transport path 10. Here, the development image is fixed. The paper on which the toner image is fixed is discharged to the tray 14.
【0042】フィルム定着器11において、12は装置
に固定された低熱容量の線状の加熱体であって、たとえ
ば、厚み1.0mm、幅10mm、長手長240mmの
アルミナ基板に電気抵抗材料を幅1.0mmに塗工した
もので、長手方向両端から通電される。通電は直流10
0Vの周期20msecのパルス状波形で、検温子によ
りコントロールされた所望の温度とエネルギー放出量に
応じたパルスを、そのパルス幅を変化させて与える。ほ
ぼパルス幅は0.5〜5.0msecとなる。In the film fixing device 11, reference numeral 12 denotes a low-heat-capacity linear heating element fixed to the apparatus. For example, an alumina substrate having a thickness of 1.0 mm, a width of 10 mm and a longitudinal length of 240 mm is provided with an electric resistance material. It is applied to 1.0 mm, and electricity is applied from both ends in the longitudinal direction. Direct current 10
A pulsed waveform having a cycle of 0 V and a period of 20 msec is applied by changing the pulse width according to a desired temperature and energy release amount controlled by a thermometer. The pulse width is approximately 0.5 to 5.0 msec.
【0043】このように、温度とエネルギーの制御され
た加熱体12に当接しながら、定着フィルム13は記録
材とともに、ほぼ等速で移動する。この定着フィルム1
3の一例として、厚み20μmの耐熱フィルム、たとえ
ば、ポリイミド、ポリエーテルイミド、PES、PFA
に、少なくとも画像当接面側にPTFE、PFA等のフ
ッ素樹脂に導電材を添加した離型層を10μmコートし
たエンドレスフィルムである。一般には総厚100μm
以下、より好ましくは60μm未満にする。この定着フ
ィルム13の無端ベルトは、駆動ローラ31と従動ロー
ラ32に掛け渡され、両ローラ31、32による駆動と
テンションにより、スムーズにしわが寄ること無く無端
移動する。As described above, the fixing film 13 moves together with the recording material at a substantially constant speed while contacting the heating body 12 whose temperature and energy are controlled. This fixing film 1
As an example of 3, a heat-resistant film having a thickness of 20 μm, such as polyimide, polyetherimide, PES, PFA
The endless film has a release layer of 10 μm coated with a conductive material added to a fluororesin such as PTFE or PFA on at least the image contact surface side. Generally, total thickness 100 μm
The following is more preferably less than 60 μm. The endless belt of the fixing film 13 is stretched around a driving roller 31 and a driven roller 32, and is smoothly moved by the rollers 31 and 32 and tensioned without endless wrinkles.
【0044】33はシリコンゴム等の離型性の良いゴム
弾性層を有する加圧ローラで、総圧4〜7kgで定着フ
ィルム13を介して加熱体12を加圧し、該定着フィル
ム13とにより、転写紙を挾持して搬送する。Reference numeral 33 denotes a pressure roller having a rubber elastic layer having a good releasability such as silicon rubber, which presses the heating body 12 through the fixing film 13 with a total pressure of 4 to 7 kg, and the fixing film 13 causes Hold the transfer paper and transport it.
【0045】転写紙は定着フィルム13と実質的に滑べ
りなく移動し、定着フィルム13を介して加熱体12の
熱を受け、これによりトナーが溶融して紙に定着する。The transfer paper moves substantially without sliding with the fixing film 13 and receives heat from the heating body 12 via the fixing film 13, whereby the toner is melted and fixed on the paper.
【0046】上記の如くフィルム定着器11によりトナ
ー像を定着する為、プロセスカートリッジ101のトナ
ー容器には低融点トナーを収容してある。この低融点ト
ナーは前述したように、従来の熱ローラ式の定着器を基
準として比較すると、従来のトナーの定着温度が150
〜180℃に対し、120〜150℃で定着できる。従
って従来のトナーより低い温度で柔らかくなる傾向があ
る。従って摺動型ヒンジで機械的に摺られたりすると凝
集塊(粗粉)が発生しやすいが、本発明の撹拌機構によ
ればそれが防止できるので、本発明はフィルム定着器用
トナーを用いた現像装置には特に有用である。Since the toner image is fixed by the film fixing device 11 as described above, the toner container of the process cartridge 101 contains low melting point toner. As described above, the low melting point toner has a conventional toner fixing temperature of 150 when compared with the conventional heat roller type fixing device.
It can be fixed at 120 to 150 ° C. to ˜180 ° C. Therefore, it tends to be softer at lower temperatures than conventional toners. Therefore, when mechanically slid by a sliding hinge, aggregates (coarse particles) tend to be generated, but the stirring mechanism of the present invention can prevent this, and therefore the present invention is directed to development using toner for film fixing devices. It is especially useful for devices.
【0047】以上の実施例ではシート定着器用の磁性ト
ナー(1成分磁性現像剤)を使用するものを例示した
が、非磁性トナー(1成分非磁性現像剤)を使用する現
像装置にも本発明は利用できる。磁性微粉を含有しない
非磁性トナーは磁性トナーよりも更に低融点となるの
で、本発明は有用なものとなる。In the above embodiments, the magnetic toner (one-component magnetic developer) for the sheet fixing device is used as an example, but the present invention is also applicable to a developing device using a non-magnetic toner (one-component non-magnetic developer). Is available. The present invention is useful because the non-magnetic toner containing no magnetic fine powder has a lower melting point than the magnetic toner.
【0048】また、加熱定着ではなく圧力定着用のカプ
セルトナーも低融点であるので、本発明は有用である。The present invention is also useful because the capsule toner for pressure fixing instead of heat fixing has a low melting point.
【0049】しかし、本発明は熱ローラ定着用の高融点
のトナーを使用する現像装置にも適用できる。高融点ト
ナーでも凝集粗粉が生ずることがあるが、本発明によれ
ば撹拌機構での凝集粗粉の発生を高度に防止することが
できる。However, the present invention can also be applied to a developing device using a high melting point toner for fixing a heat roller. Coagulated coarse powder may be generated even in the high melting point toner, but according to the present invention, generation of the aggregated coarse powder in the stirring mechanism can be highly prevented.
【0050】[0050]
【発明の効果】以上のように本発明によれば、現像剤の
撹拌手段を現像剤容器内に備える現像装置において、振
り子運動する第1撹拌部材に対し、柔軟変形部材で第2
撹拌部材を連結し、現像剤容器内の底面に沿って往復運
動するように第2撹拌部材を駆動させることにより、前
記第1撹拌部材と前記第2撹拌部材との連結部におい
て、トナーの粗粉が発生すること無く、スリーブ上のト
ナーコート量も乱れないため、白スジ画像を防ぐことが
できる。As described above, according to the present invention, in the developing device having the developer agitating means in the developer container, the flexible deforming member is used for the first agitating member which performs the pendulum motion.
By connecting the agitating member and driving the second agitating member so as to reciprocate along the bottom surface in the developer container, the coarse toner particles are removed at the connecting portion between the first agitating member and the second agitating member. Since no powder is generated and the toner coat amount on the sleeve is not disturbed, it is possible to prevent a white streak image.
【図1】本発明の一実施例の説明図。FIG. 1 is an explanatory diagram of an embodiment of the present invention.
【図2】本発明の一実施例の撹拌機構の斜視図。FIG. 2 is a perspective view of a stirring mechanism according to an embodiment of the present invention.
【図3】他の撹拌機構例の斜視図。FIG. 3 is a perspective view of another example of the stirring mechanism.
【図4】更に他の撹拌機構例の斜視図。FIG. 4 is a perspective view of still another example of the stirring mechanism.
【図5】駆動機構の一例の説明図。FIG. 5 is an explanatory diagram of an example of a drive mechanism.
【図6】本発明を利用できる画像形成装置の一例の説明
図。FIG. 6 is an explanatory diagram of an example of an image forming apparatus that can utilize the present invention.
【図7】従来例の説明図。FIG. 7 is an explanatory diagram of a conventional example.
【図8】従来の撹拌機構の説明図。FIG. 8 is an explanatory view of a conventional stirring mechanism.
2 現像スリーブ 21 柔軟変形部材 22 第1撹拌部材 23 第2撹拌部材 2 Development Sleeve 21 Flexible Deformation Member 22 First Stirring Member 23 Second Stirring Member
Claims (2)
材と、この第1撹拌部材に柔軟変形部材で連結された第
2撹拌部材とを配置し、第1撹拌部材を振り子運動さ
せ、それに連動して第2撹拌部材を容器底面に沿って往
復運動させる現像装置。1. A first agitation member and a second agitation member connected to the first agitation member by a flexible deformation member are arranged in a container containing a developer, and the first agitation member is pendulum-moved. , A developing device which reciprocally moves the second stirring member along the bottom surface of the container in conjunction therewith.
材と、この第1撹拌部材に柔軟変形部材で連結された第
2撹拌部材とを配置し、第1撹拌部材を振り子運動さ
せ、それに連動して第2撹拌部材を容器底面に沿って往
復運動させる現像装置と、この現像装置によって現像さ
れる静電潜像を担持する像担持体を備えており、画像形
成装置本体に着脱可能なプロセスカートリッジ。2. A first agitation member and a second agitation member connected to the first agitation member by a flexible deformation member are arranged in a container containing a developer, and the first agitation member is pendulum-moved. , A developing device that reciprocally moves the second stirring member along the bottom surface of the container in conjunction with it, and an image carrier that carries an electrostatic latent image developed by the developing device. Possible process cartridge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4342503A JPH06186843A (en) | 1992-12-22 | 1992-12-22 | Developing device and process cartridge provided therewith |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4342503A JPH06186843A (en) | 1992-12-22 | 1992-12-22 | Developing device and process cartridge provided therewith |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06186843A true JPH06186843A (en) | 1994-07-08 |
Family
ID=18354255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4342503A Pending JPH06186843A (en) | 1992-12-22 | 1992-12-22 | Developing device and process cartridge provided therewith |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06186843A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040018866A (en) * | 2002-08-27 | 2004-03-04 | 삼성전자주식회사 | agitating apparatus of developer-storing cartridge |
US7107002B2 (en) | 2002-08-12 | 2006-09-12 | Oki Data Corporation | Toner collection apparatus |
JP2020052192A (en) * | 2018-09-26 | 2020-04-02 | コニカミノルタ株式会社 | Toner supply device, developing device, and image forming apparatus |
JP2020052193A (en) * | 2018-09-26 | 2020-04-02 | コニカミノルタ株式会社 | Toner supply device, developing device, and image forming apparatus |
-
1992
- 1992-12-22 JP JP4342503A patent/JPH06186843A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7107002B2 (en) | 2002-08-12 | 2006-09-12 | Oki Data Corporation | Toner collection apparatus |
KR20040018866A (en) * | 2002-08-27 | 2004-03-04 | 삼성전자주식회사 | agitating apparatus of developer-storing cartridge |
JP2020052192A (en) * | 2018-09-26 | 2020-04-02 | コニカミノルタ株式会社 | Toner supply device, developing device, and image forming apparatus |
JP2020052193A (en) * | 2018-09-26 | 2020-04-02 | コニカミノルタ株式会社 | Toner supply device, developing device, and image forming apparatus |
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