JPS5968770A - Device for cleaning electrophotographic receptor - Google Patents

Device for cleaning electrophotographic receptor

Info

Publication number
JPS5968770A
JPS5968770A JP17905082A JP17905082A JPS5968770A JP S5968770 A JPS5968770 A JP S5968770A JP 17905082 A JP17905082 A JP 17905082A JP 17905082 A JP17905082 A JP 17905082A JP S5968770 A JPS5968770 A JP S5968770A
Authority
JP
Japan
Prior art keywords
drum
blade
particles
elastic blade
fluororesin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP17905082A
Other languages
Japanese (ja)
Other versions
JPH0445830B2 (en
Inventor
Susumu Nakazawa
中沢　享
Akira Fushida
鮒子田　晃
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial 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 Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Priority to JP17905082A priority Critical patent/JPS5968770A/en
Publication of JPS5968770A publication Critical patent/JPS5968770A/en
Publication of JPH0445830B2 publication Critical patent/JPH0445830B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
    • G03G21/0011—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a blade; Details of cleaning blades, e.g. blade shape, layer forming
    • G03G21/0017—Details relating to the internal structure or chemical composition of the blades

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To remove remaining toner from the surface of a movable electrophotographic receptor without giving any damages to the receptor surface by making a surface which contacts with the surface of the receptor of an elastic blade which removes the remaining toner from the receptor surface to contain a layer in which fine spherical particles of a fluorocarbon resin are buried. CONSTITUTION:Fine spherical particles 8 of a fluorocarbon resin, such as spherical polyvinylidene fluoride resin, etc. having an average primary particle size of 0.1-1mum are scattered on a photosensitive drum 1 and an accumulation 9 of the particles 8 is formed by rotating the drum 1 in the direction shown by the arrow by 10-500 revolutions with an elastic blade 3 made of polyurethane elastomer, etc., being contacted with the drum 1 surface, and then, the particles 8 or their secondary particles are burried and held, by the means which the particles 8 are made to bury into the end part 4 of the blade 3 the shearing force caused by the relative movement between the drum 1 and blade 3 and so forth. Therefore, the remaining toner can be removed effectively without giving any damages to the drum surface and, consequently, not only the life of drum, but also the life of blade can be extended.

Description

【発明の詳細な説明】 本発明は、電子写真感光体表面のクリーニング装置に関
するもので、より詳細にはトナー像転写後感光体表面に
残留するトナーを、感光体表面に傷をつけることなしに
該表面から有効に除去できるクリーニング装置に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning device for the surface of an electrophotographic photoreceptor, and more specifically, to a cleaning device for cleaning the surface of an electrophotographic photoreceptor, and more specifically, for cleaning the toner remaining on the surface of the photoreceptor after toner image transfer without damaging the surface of the photoreceptor. The present invention relates to a cleaning device that can effectively remove the surface from the surface.

電子写真法においては、第１図に示す通り、光導電性感
光体１の表面をチャージャー１１で帯電させ且つ光学系
１２を介して画像露光することにより静電潜像を形成さ
せ、この静電潜像を現像機構１６によりトナー１４で現
像し、形成されるトナー像を複写紙１５にチャーヂャー
１６により静電的に転写し、転写後感光体表面に残留す
るトナーを必要によりチャーヂャ１７で除電後クリ一二
ング機構２により除去する一連の工程を反復して複写を
行っている。転写行程後において、感光体表面に残留す
るトナーは感光体表面に静電的に吸引されているものも
あり、クリーニングによる除去は必ずしも容易ではない
。In electrophotography, as shown in FIG. 1, an electrostatic latent image is formed by charging the surface of a photoconductive photoreceptor 1 with a charger 11 and exposing it to image light through an optical system 12. The latent image is developed with toner 14 by a developing mechanism 16, and the formed toner image is electrostatically transferred to copy paper 15 by a charger 16. After the transfer, the toner remaining on the surface of the photoreceptor is removed by a charger 17 if necessary. Copying is performed by repeating a series of removal steps using the cleaning mechanism 2. After the transfer process, some of the toner remaining on the photoreceptor surface is electrostatically attracted to the photoreceptor surface, and it is not necessarily easy to remove it by cleaning.

従来、トナーのクリーニングには、ノアブラシ法、弾性
ブレードを用いる法、磁気ブラシを用いる方法等が使用
されているが、ノアブラシ法ではトナー飛散の問題があ
り、磁気ブラシ法では、高価なマグネット収容クリーニ
ングスリーブを別個に必要とし、また現像スリーブをク
リーニングにも併用する場合にはクリーニング作業のた
めに複写サイクルが長くなるという問題がある。弾性ブ
レードを感光体表面と摺擦させてクリーニングを行う方
式は、機構も操作も簡単であるという利点を有するが、
トナー粒子の感光体表面への静電的吸引力に打ち勝って
！・カー粒子を感光体表面から除去するためには、ブレ
ード先端にかなり大きな押圧力乃至は圧接力を及ぼさな
ければならず、これにより感光体表面に傷が入ったり、
或いは感光体の寿命が短か（なるという欠点がある。Conventionally, methods such as the Noah brush method, a method using an elastic blade, and a method using a magnetic brush have been used to clean toner, but the Noah brush method has the problem of toner scattering, and the magnetic brush method requires expensive magnet storage cleaning. A separate sleeve is required, and if the developing sleeve is also used for cleaning, there is a problem that the cleaning operation lengthens the copying cycle. The method of cleaning by rubbing an elastic blade against the surface of the photoconductor has the advantage of a simple mechanism and simple operation.
Overcoming the electrostatic attraction of toner particles to the photoreceptor surface!・In order to remove Kerr particles from the surface of the photoreceptor, it is necessary to apply a fairly large pressing force or pressing force to the tip of the blade, which may cause scratches on the surface of the photoreceptor.
Alternatively, the lifespan of the photoreceptor is short.

従って、本発明の目的は、トナー像転写後に感光体表面
に残留するトナー粒子を、感光体表面に傷をつげること
なしに該表面から有効に除去できるクリーニング装置を
提供するにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cleaning device that can effectively remove toner particles remaining on the surface of a photoreceptor after toner image transfer without damaging the surface of the photoreceptor.

本発明の他の目的は、クリーニング時における弾性体ブ
レードと感光体表面との摩擦力が著しく小さいレベルに
抑制され、感光体表面の傷の発生が抑制され、感光体の
寿命を著しく長しし得るクリーニング装置を提供するに
ある。Another object of the present invention is to suppress the frictional force between the elastic blade and the photoreceptor surface during cleaning to a significantly small level, suppress the occurrence of scratches on the photoreceptor surface, and significantly extend the life of the photoreceptor. We are here to provide you with the cleaning equipment you need.

本発明の更に他の目的は、弾性体ブレードのゴム弾性、
柔軟さ、機械的性質を実質上変化させることなく、感光
体表面との摩擦力を有効に低減させたクリーニング装置
を提供するにある。Still another object of the present invention is to improve the rubber elasticity of the elastic blade;
It is an object of the present invention to provide a cleaning device that effectively reduces the frictional force with the surface of a photoreceptor without substantially changing its flexibility or mechanical properties.

本発明の更に他の目的は、極めて簡便な操作及び構成で
前述した改善がなされた電子写真感光体のクリーニング
装置を提供するにある。Still another object of the present invention is to provide an electrophotographic photoreceptor cleaning device that is extremely simple to operate and has the above-mentioned improvements.

本発明によれば、可動の電子写真感光体表面からトナー
を除去するために、先端が該感光体表面と接触するよう
に設けられた弾性体ブレードを有する電子写真用りＩＪ
　　＝ング装置において、前記弾性体ブレードは感光体
表面に接触する表面に該弾性体に埋込まれた形で保持さ
れるフッ素系樹脂の微細球状粒子の層を有することを特
徴とする電子写真用クリーニング装置が提供される。According to the present invention, in order to remove toner from the surface of a movable electrophotographic photoreceptor, an electrophotographic IJ has an elastic blade whose tip is provided in contact with the surface of the photoreceptor.
In the electrophotographic device, the elastic blade has a layer of fine spherical particles of fluororesin embedded in the elastic body on the surface that contacts the surface of the photoreceptor. A cleaning device is provided.

本発明を、添付図面を参照しつつ以下に詳細に説明する
。The invention will be explained in detail below with reference to the accompanying drawings.

本発明のクリーニング装置の概略配置を示す第１及び２
図において、可動の感光ドラム１の移動路に沿って、全
体として２で示すクリーニング装置が設けられる。この
クリーニング装置２は弾性体ブレード６を有しており、
この弾性体ブレード３はその先端４がドラム１の表面と
軽く摺接するように、その根本の部分で保持具５により
保持されている。1 and 2 showing the schematic arrangement of the cleaning device of the present invention
In the figure, along the path of movement of the movable photosensitive drum 1, a cleaning device, generally designated 2, is provided. This cleaning device 2 has an elastic blade 6,
This elastic blade 3 is held by a holder 5 at its base so that its tip 4 makes light sliding contact with the surface of the drum 1.

本発明に用いる弾性体ブレード６は感光体１の表面と接
触する表面（以下有効表面と呼ぶことがある）に、以下
に詳述するフッ素系樹脂の微細球状粒子の層６を有して
おり、この層６においては、第６図の拡大図に示す通り
、ブレード６を構成す５− る弾性体相７中にフッ素系樹脂の微細球状粒子乃至はそ
の２次粒子８が埋込まれた形で有効表面に一様に保持さ
れていることが顕著な特徴である。The elastic blade 6 used in the present invention has a layer 6 of fine spherical particles of fluororesin, which will be described in detail below, on the surface that contacts the surface of the photoreceptor 1 (hereinafter sometimes referred to as the effective surface). In this layer 6, as shown in the enlarged view of FIG. 6, fine spherical particles of fluororesin or its secondary particles 8 are embedded in the elastic phase 7 constituting the blade 6. A distinctive feature is that the shape is uniformly retained on the effective surface.

このフッ素系樹脂粒子の層６の存在は、必らずしも肉眼
で確認されないが、ブレード６の有効表面を顕微鏡で観
察すると、第６図の組織構造の存在を容易に確認できる
。The presence of this layer 6 of fluororesin particles is not necessarily confirmed with the naked eye, but when the effective surface of the blade 6 is observed under a microscope, the presence of the structure shown in FIG. 6 can be easily confirmed.

この表面層６において、フッ素系樹脂粒子が弾性体表面
に埋込まれている事実は、この表面層を布等でこすって
もフッ素系樹脂粒子が剥離せず、第６図の構造が繊持さ
れることで確認でき、またフッ素樹脂粒子が表面に保持
されている事実、即ち該粒子の一部が表面に露出してい
る事実は、弾性体ブレード先端と感光体表面との摩擦力
が前記表面埋込み層の存在によって大巾に減少すること
から確認できる。In this surface layer 6, the fact that the fluororesin particles are embedded in the surface of the elastic body means that even if this surface layer is rubbed with a cloth, the fluororesin particles will not peel off, and the structure shown in Figure 6 will not peel off. It can be confirmed by This can be confirmed from the fact that it is greatly reduced due to the presence of the surface buried layer.

従来フッ素系樹脂が著しく小さい摩擦係数を有し、ベア
リング等の固体摺動材として有用であることは周知に属
する。しかしながら、本発明においては、このフッ素系
樹脂を微細球状粒子乃至は６一 その二次粒子の形で使用し、しかもこの球状粒子乃至は
二次粒子を弾性体ブレードの有効表面に埋込んだ形で保
持させることが重要なのである。即ち、このフッ素系樹
脂の球状粒子は、弾性体ブレードと感光体表面との界面
にコロ的滑性を与えるものと信じられ、このことは本発
明の弾性体ブレードにおいては、該ブレード全面がフッ
素系樹脂で完全に覆われていない、即ちブレード表面に
はフッ素系樹脂粒子が分散した形で存在するにもかかわ
らず、感光体表面との摩擦が著しく減少するという事実
とも良く符合するものである。しかも、弾性体ブレード
の表面全体をフッ素樹脂のフィルム等で被覆する場合に
は、ブレード表面の硬度が高（なり、そのためにクリー
ニング時に感光体に傷が入るという副次的な欠点を生ず
るが、本発明の弾性体ブレードの有効表面には、フッ素
系樹脂の微細球状粒子乃至はその二次粒子が分散した状
態で存在するため、弾性体ブレードの表面は弾性体本来
の柔軟さやクッション性等が実質上そのまま繊持され、
表面の硬さ等による傷の発生は解消されるものである。It is well known that fluororesins have extremely low coefficients of friction and are useful as solid sliding materials for bearings and the like. However, in the present invention, the fluororesin is used in the form of fine spherical particles or its secondary particles, and moreover, the fluororesin is embedded in the effective surface of the elastic blade. It is important to keep it in place. That is, it is believed that the spherical particles of the fluororesin impart colloidal slipperiness to the interface between the elastic blade and the photoreceptor surface, and this means that in the elastic blade of the present invention, the entire surface of the blade is made of fluorine. This agrees well with the fact that the friction with the photoreceptor surface is significantly reduced even though the blade surface is not completely covered with the fluororesin resin, that is, the fluororesin particles are present in a dispersed form on the blade surface. . Moreover, when the entire surface of the elastic blade is coated with a fluororesin film, etc., the hardness of the blade surface becomes high, which causes a secondary drawback of scratching the photoreceptor during cleaning. On the effective surface of the elastic blade of the present invention, fine spherical particles of fluororesin or its secondary particles exist in a dispersed state, so the surface of the elastic blade has the flexibility and cushioning properties inherent to the elastic body. It is carried virtually as is,
This eliminates the occurrence of scratches due to surface hardness, etc.

更に、このフッ素樹脂の球状粒子乃至はその二次粒子は
弾性体ブレード表面に埋込まれた形で保持されているた
め、長期間にわたってクリーニングに使用した場合にも
、該表面から離脱することがなく、安定した摩擦低下作
用が長期間にわたって得られる。この表面への保持性は
弾性体ブレード先端が次第に摩耗した場合にさえも安定
であり、従って一旦本発明の処理を行うと、弾性体ブレ
ードの寿命迄、前述した利点が達成されるものである。Furthermore, since the fluororesin spherical particles or their secondary particles are held embedded in the surface of the elastic blade, they do not come off from the surface even when used for cleaning over a long period of time. Therefore, a stable friction-reducing effect can be obtained over a long period of time. This surface retention is stable even when the tip of the elastic blade gradually wears out, and therefore, once the treatment of the present invention is applied, the above-mentioned advantages are achieved throughout the life of the elastic blade. .

本発明において弾性体ブレード乙の有効表面にフッ素系
樹脂粒子の層６を形成させるには、可動の電子写真感光
層表面と弾性体ブレード先端とを係合させた状態でのな
じみ運転に際して、両者の保合界面に該粒子を供給し、
これによって弾性体ブレード表面にフッ素系樹脂の球状
粒子乃至はその二次粒子を埋込む操作が有利に使用され
る。In the present invention, in order to form the layer 6 of fluororesin particles on the effective surface of the elastic blade B, during a run-in operation in which the surface of the movable electrophotographic photosensitive layer and the tip of the elastic blade are engaged, both supplying the particles to the cohesive interface of
As a result, the operation of embedding spherical particles of fluororesin or its secondary particles on the surface of the elastic blade can be advantageously used.

この操作を説明するための第４図において、弾性体ブレ
ード３の先端４を感光体ドラム１に押し当て、感光体ド
ラム１を矢印方向に回転させる。In FIG. 4 for explaining this operation, the tip 4 of the elastic blade 3 is pressed against the photosensitive drum 1, and the photosensitive drum 1 is rotated in the direction of the arrow.

この接触位置よりも上流側でフッ素系樹脂の粉末を供給
すると、先端４０部分には該粉末の溜り９が形成される
。この溜り９の粉末に対しては、先端４とドラム１との
相対的移動による剪断力が作用するので、この粉末は一
次球状粒子乃至はその二次粒子の形に解砕され、解砕さ
れた粒子はブレード先端４とドラム１との接触界面に噛
み込まれ、弾性体ブレード表面への埋込みが行われるも
のである。このなじみ運転による埋め込みは、一般にド
ラムを１０乃至５００回転させて行えばよく、フッ素系
樹脂の供給は、例えば感光体表面に予めまぶしておく方
式、トナー中で予め添加してお（方式等で行うことがで
きる。また、このなじみ運転は、クリーニング装置を実
際に組込んだ複写機について行う他に、複写機に組込む
前の弾性体ブレードに対して別個に行ってもよいことは
当然である。When fluororesin powder is supplied upstream of this contact position, a pool 9 of the powder is formed at the tip 40. A shearing force is applied to the powder in the reservoir 9 due to the relative movement between the tip 4 and the drum 1, so the powder is crushed into primary spherical particles or secondary particles. The particles are bitten into the contact interface between the blade tip 4 and the drum 1, and are embedded in the surface of the elastic blade. The embedding by this running-in operation can generally be carried out by rotating the drum 10 to 500 times, and the fluororesin can be supplied, for example, by sprinkling it on the surface of the photoconductor, or adding it to the toner in advance. Furthermore, in addition to performing this run-in operation on the copying machine in which the cleaning device is actually installed, it is also possible to perform this run-in operation separately on the elastic blade before it is installed in the copying machine. .

本発明に用いるフッ素樹脂の球状粒子は、一般に乳化重
合法によるフッ素樹脂粉末として入手できる。この球状
粒子は電子顕微鏡観察によると真９− 円状であり、その−成粒径（電子顕微鏡写真法による数
平均粒径）は、０．１乃至１ミクロンの範囲にあり、一
般に１乃至７ミクロンの二次粒子の形で存在する。フッ
素系樹脂としては、ポリテトラフルオロエチレン、テト
ラフルオロエチレン／ヘキサフルオロプロピレン共重合
体等も使用し得るが、ポリフッ化ビニリデンを用いた場
合に最も良好な結果が得られる。本発明の目的に最も好
適なポリフッ化ビニリデン球状粒子は、カイナア（、Ｋ
ＹＮＡＲ−ペンウォルト・コーポレーションの商標）の
商品名で市販されているものである。The fluororesin spherical particles used in the present invention are generally available as fluororesin powder produced by emulsion polymerization. These spherical particles have a true 9-circle shape when observed with an electron microscope, and their particle diameter (number average particle size as determined by electron microscopy) is in the range of 0.1 to 1 micron, and generally 1 to 7 microns. Exists in the form of micron secondary particles. As the fluororesin, polytetrafluoroethylene, tetrafluoroethylene/hexafluoropropylene copolymer, etc. can also be used, but the best results are obtained when polyvinylidene fluoride is used. The most suitable polyvinylidene fluoride spherical particles for the purpose of the present invention are Kainaa (, K
It is commercially available under the trade name YNAR (trademark of Pennwalt Corporation).

弾性体ブレードとしては、それ自体公知の天然ゴム或い
は合成ゴムから成る任意のブレードが使用されるが、ポ
リウレタンエラストマーから成るものが特に有利に使用
される。ポリウレタンエラストマーとしては、従来この
分野で使用されているポリウレタンゴム、一般にポリエ
ステルポリオール或いはポリエーテルポリオールから誘
導される柔かいセグメントと芳香族ジイソシアネートか
ら誘導される硬いセグメントから成るポリウレター１〇
− ンが使用される。As the elastic blade, any known per se blade made of natural or synthetic rubber can be used, but one made of polyurethane elastomer is particularly preferably used. As the polyurethane elastomer, polyurethane rubbers conventionally used in this field, generally consisting of soft segments derived from polyester polyols or polyether polyols and hard segments derived from aromatic diisocyanates, are used. .

弾性体ブレードの諸寸法は、特に制限はないが、ブレー
ド長が１５乃至３０朋、厚みが０．５乃至５ｍｍのもの
が有利に使用される。The dimensions of the elastic blade are not particularly limited, but blades with a length of 15 to 30 mm and a thickness of 0.5 to 5 mm are advantageously used.

フッ素系樹脂粒子のブレード先端へ施こす量は、有効表
面に第６図の如き埋込みが行われるようなものであれば
よく、極めて微量でよいことから、−概に規定すること
が困離である。一般的には、ブレードの巾５００酊当り
０．０００１乃至１０１ｎ９の範囲から適当な量を定め
るのがよい。The amount of fluororesin particles to be applied to the tip of the blade may be such that it is embedded in the effective surface as shown in Figure 6, and it is difficult to generalize because it may be an extremely small amount. be. In general, it is advisable to set an appropriate amount within the range of 0.0001 to 101n9 per 500 mm of blade width.

実施例１゜ 以下の手順に従い有機感光ドラムを作製した。Example 1゜ An organic photosensitive drum was produced according to the following procedure.

上記秤量した試薬をステンレス製ボールミルに入れ、１
昼夜分散を行ないドラム感光液を得た。Put the weighed reagent above into a stainless steel ball mill and
Dispersion was carried out day and night to obtain a drum photosensitive liquid.

次に、この感光液をブレードコーティング法に従ってア
ルミニウムドラム表面上に塗工し、１００℃で１時間の
乾燥を行ない、厚さ１０μの感光層をもった感光層をも
った感光ドラムを作製した。Next, this photosensitive liquid was coated on the surface of an aluminum drum according to a blade coating method and dried at 100° C. for 1 hour to produce a photosensitive drum having a photosensitive layer having a thickness of 10 μm.

次にこのドラムを用いて、以下の手順によりブレードに
よるテストを行なった。Next, using this drum, a blade test was conducted according to the following procedure.

上記ドラムを三田工業に、に製Ｐ、　Ｐ、Ｃ複写機ＤＣ
＝１６２に装着し、ウレタンゴム製クリーニングブレー
ドをドラム表面上に圧着させた。The above drum was manufactured by Sanda Kogyo, P, P, C copier DC.
= 162, and a urethane rubber cleaning blade was pressed onto the drum surface.

次にドラム表面上にポリフッ化ビニリデン（カイカー社
製）の微粉末を均一にまぶし、なじみ運動としてドラム
を２０回転、回転させ、ドラム表面上にまぶしたポリフ
ッ化ビニルデン微粉末をウレタンゴムブレードの圧接部
分にうめこんだ。Next, the surface of the drum was uniformly sprinkled with fine powder of polyvinylidene fluoride (manufactured by Kyker), the drum was rotated 20 times as a running-in motion, and the fine powder of polyvinylidene fluoride sprinkled on the drum surface was pressed by a urethane rubber blade. I buried it in the part.

確認テストとして、ウレタンゴムブレードとドラムの圧
接部分を顕微鏡により観察したところ、ウレタンゴムブ
レードの表面中にポリフッ化ビニリデン微粉末がうめ込
まれた状態になっており、ウレタンゴム表面上をガーゼ
でこすってもうめ込まれたポリフッ化ビニリデン微粉末
は脱離１−なかつた。As a confirmation test, we observed the pressure contact area between the urethane rubber blade and the drum using a microscope, and found that polyvinylidene fluoride fine powder was embedded in the surface of the urethane rubber blade. The embedded fine polyvinylidene fluoride powder was not desorbed.

次に耐摩耗性テストとして５０００サイクルの複写テス
トを行なった後ドラム表面上の観察を行なった。その結
果ドラム表面上にはブレードによるキズの発生がまった
く無く、未使用のドラム表面と大差はなかった。Next, as an abrasion resistance test, a 5000 cycle copying test was conducted, and then the surface of the drum was observed. As a result, there were no scratches caused by the blade on the surface of the drum, and there was no significant difference from the surface of an unused drum.

比較例１゜ 実施例１とまった（同様の方法でドラムを作製した。Comparative example 1゜ Example 1 (a drum was produced in a similar manner).

次に、このドラムを三田工業に、に製Ｐ、Ｐ、Ｃ複写Ｄ
Ｃ−１６２に装着しウレタンゴム製クリーニングブレー
ドをドラム表面上に圧着させた。Next, this drum was sent to Sanda Kogyo Co., Ltd., P, P, C copy D.
C-162, and a urethane rubber cleaning blade was pressed onto the drum surface.

次に、耐摩耗性テストとして５０００サイクルの複写テ
ストを行なったが、約５００サイクル程度でブレードに
よるキズの発生が目立ち、５０００サイクルのテストに
は至らなかった。Next, a 5,000-cycle copying test was conducted as an abrasion resistance test, but scratches caused by the blade became noticeable after about 500 cycles, and the 5,000-cycle test was not completed.

実施例２゜ セレン感光ドラム表面上にポリフッ化ビニリデン（カイ
カー社製）の微粉末を均一にまぶし、クリーニング方式
としてウレタンゴムブレードラ用１６− いた三田工業に、に製ＤＣ−１９１に装着し、なじみ運
転として、ドラムを２０回転、回転させドラム表面上に
まぶした、ポリフッ化ビニリデン微粉末ヲウレタンゴム
ブレードの圧接部分にうめこんだ。Example 2 A fine powder of polyvinylidene fluoride (manufactured by Kyker Co., Ltd.) was uniformly sprinkled on the surface of a selenium photosensitive drum, and as a cleaning method, it was installed in a DC-191 manufactured by Sanda Kogyo, which was equipped with a urethane rubber braider. As a run-in operation, the drum was rotated 20 revolutions, and the polyvinylidene fluoride fine powder sprinkled on the drum surface was embedded in the pressure contact area of the urethane rubber blade.

確認テストとしてウレタンゴムブレードとドラムの圧接
部分を顕微鏡により観察したところ、ウレタンゴムブレ
ード表面中にポリフッ化ビニリデン微粉末がうめ込まれ
た状態になっており、ウレタンゴム表面上をガーゼでこ
すっても、うめ込まれたポリフッ化ビニリデン微粉末は
脱離しなかった。As a confirmation test, we observed the pressure contact area between the urethane rubber blade and the drum using a microscope, and found that polyvinylidene fluoride fine powder was embedded in the surface of the urethane rubber blade, and even when the surface of the urethane rubber was rubbed with gauze, The embedded polyvinylidene fluoride fine powder did not come off.

次に耐キズ性テストとして１０万枚の複写テストを行な
ったが、画像にはキズの影響は表われなかった。Next, a 100,000-sheet copying test was conducted as a scratch resistance test, but no effects of scratches appeared on the images.

比較例２゜ セレン感光ドラム表面上にポリフッ化ビニリデン微粉末
をまぶさなかった以外は実施例２とまったく同様の方法
でテストを行なった。Comparative Example 2 A test was conducted in exactly the same manner as in Example 2, except that fine polyvinylidene fluoride powder was not sprinkled on the surface of the selenium photosensitive drum.

その結果、約５万枚でハーフトーン部の画像に１４− ドラムキズによる筋が発生１−１１０万枚ではドラムキ
ズによる画質の不鮮明さが目立った。As a result, after about 50,000 copies, streaks due to 14-drum scratches appeared in the halftone image, and when 1-1,100,000 copies were printed, the image quality was noticeably blurred due to drum scratches.

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

第１図は本発明のクリーニング装置を取付けた電子写真
複写機の概略配置図であり、 第２図は第１図のクリーニング装置をフッ素系樹脂粉末
の適用状態で拡大して示す一部破断側面図であり、 第６図は弾性体ブレードの有効表面を顕微鏡規模で拡大
して示す斜視図であり、 第４図は、本発明のクリーニングブレードのフッ素系樹
脂層を形成させる方法についての説明図である。 引照数字１は感光体、２はクリーニング装置、３は弾性
体ブレード、４は先端、６はフッ素系樹脂粒子の層、７
は弾性体相、８はフッ素系樹脂粒子。 特許出願人　三Ｈ１工業株式会社 １５−FIG. 1 is a schematic layout diagram of an electrophotographic copying machine equipped with the cleaning device of the present invention, and FIG. 2 is a partially cutaway side view showing the cleaning device of FIG. 1 in an enlarged state in which fluororesin powder is applied. FIG. 6 is a perspective view showing the effective surface of the elastic blade enlarged on a microscopic scale, and FIG. 4 is an explanatory diagram of the method for forming the fluororesin layer of the cleaning blade of the present invention. It is. Reference number 1 is the photoreceptor, 2 is the cleaning device, 3 is the elastic blade, 4 is the tip, 6 is the layer of fluororesin particles, 7
8 is an elastic phase, and 8 is a fluororesin particle. Patent applicant SanH1 Industries Co., Ltd. 15-

Claims (4)

【特許請求の範囲】[Claims] （１）可動の電子写真感光体表面からトナーを除去する
ために、先端が該感光体表面と接触するように設けられ
た弾性体ブレードを有する電子写真用クリーニング装置
において、前記弾性体ブレードは感光体表面に接触する
表面に該弾性体に埋込まれた形で保持されるフッ素系樹
脂の微細球状粒子の層を有することを特徴とする電子写
真用クリーニング装置。(1) In an electrophotographic cleaning device having an elastic blade whose tip is provided in contact with the surface of a movable electrophotographic photoreceptor in order to remove toner from the surface of the photoreceptor, the elastic blade is An electrophotographic cleaning device characterized by having a layer of fine spherical particles of a fluororesin embedded in the elastic body on a surface that contacts a body surface. （２）前記フッ素系樹脂の微細球状粒子がポリフッ化ビ
ニリデンから成る数平均−欠粒径が０．１乃至　１　ミ
クロンの球状粒子である特許請求の範囲第１項記載のク
リーニング装置。(2) The cleaning device according to claim 1, wherein the fine spherical particles of the fluororesin are spherical particles made of polyvinylidene fluoride and have a number average particle diameter of 0.1 to 1 micron. （３）前記弾性体ブレードがポリウレタンエラストマー
から成る特許請求範囲第１項記載のクリーニング装置。(3) The cleaning device according to claim 1, wherein the elastic blade is made of polyurethane elastomer. （４）前記フッ素系樹脂の微細球状粒子は、可動の電子
写真感光体表面と弾性体ブレード先端とを係合させた状
態でのなじみ運転に際して、両者の保合界面に該粒子を
供給することによって弾性体ブレード表面に埋込まれた
ものである特許請求の範囲第１項記載のクリーニング装
置。(4) The fine spherical particles of the fluororesin are supplied to the bonding interface between the surface of the movable electrophotographic photoreceptor and the tip of the elastic blade during a run-in operation with the surface of the movable electrophotographic photoreceptor and the tip of the elastic blade engaged. The cleaning device according to claim 1, wherein the cleaning device is embedded in the surface of the elastic blade.
JP17905082A 1982-10-14 1982-10-14 Device for cleaning electrophotographic receptor Granted JPS5968770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17905082A JPS5968770A (en) 1982-10-14 1982-10-14 Device for cleaning electrophotographic receptor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17905082A JPS5968770A (en) 1982-10-14 1982-10-14 Device for cleaning electrophotographic receptor

Publications (2)

Publication Number Publication Date
JPS5968770A true JPS5968770A (en) 1984-04-18
JPH0445830B2 JPH0445830B2 (en) 1992-07-28

Family

ID=16059244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17905082A Granted JPS5968770A (en) 1982-10-14 1982-10-14 Device for cleaning electrophotographic receptor

Country Status (1)

Country Link
JP (1) JPS5968770A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984326A (en) * 1987-11-27 1991-01-15 Mitsubishi Petrochemical Co., Ltd. Blade for electrophotographic apparatus
EP2738623A3 (en) * 2012-11-30 2016-09-28 Samsung Electronics Co., Ltd Cleaning blades having excellent cleaning performance and durability, cleaning units, electrophotographic imaging apparatuses and electrophotographic cartridges employing the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840443A (en) * 1971-09-23 1973-06-14
JPS5536850U (en) * 1978-08-31 1980-03-10
JPS5577773A (en) * 1978-12-08 1980-06-11 Nec Corp Cleaner blade for electrophotography
JPS5764278A (en) * 1980-10-08 1982-04-19 Canon Inc Cleaning device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840443A (en) * 1971-09-23 1973-06-14
JPS5536850U (en) * 1978-08-31 1980-03-10
JPS5577773A (en) * 1978-12-08 1980-06-11 Nec Corp Cleaner blade for electrophotography
JPS5764278A (en) * 1980-10-08 1982-04-19 Canon Inc Cleaning device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984326A (en) * 1987-11-27 1991-01-15 Mitsubishi Petrochemical Co., Ltd. Blade for electrophotographic apparatus
EP2738623A3 (en) * 2012-11-30 2016-09-28 Samsung Electronics Co., Ltd Cleaning blades having excellent cleaning performance and durability, cleaning units, electrophotographic imaging apparatuses and electrophotographic cartridges employing the same

Also Published As

Publication number Publication date
JPH0445830B2 (en) 1992-07-28

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