JPH0155456B2 - - Google Patents
Info
- Publication number
- JPH0155456B2 JPH0155456B2 JP15894085A JP15894085A JPH0155456B2 JP H0155456 B2 JPH0155456 B2 JP H0155456B2 JP 15894085 A JP15894085 A JP 15894085A JP 15894085 A JP15894085 A JP 15894085A JP H0155456 B2 JPH0155456 B2 JP H0155456B2
- Authority
- JP
- Japan
- Prior art keywords
- resistance value
- fur brush
- brush
- bristles
- predetermined
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 description 15
- 108091008695 photoreceptors Proteins 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000002964 rayon Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 230000008707 rearrangement Effects 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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
- G03G21/0035—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 brush; Details of cleaning brushes, e.g. fibre density
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Brushes (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、フアーブラシの抵抗値調整方法に関
し、特に、電子写真複写機等のフアーブラシクリ
ーニング装置に適用可能なフアーブラシの抵抗値
調整方法に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for adjusting the resistance value of a fur brush, and particularly to a method for adjusting the resistance value of a fur brush that can be applied to a fur brush cleaning device such as an electrophotographic copying machine. be.
従来、電子写真複写機等のフアーブラシクリー
ニング装置として、ブラシ毛を導電性材料で形成
し、このブラシ毛に適正なバイアス電圧を印加
し、機械的掻取り力に加えて静電気的吸引力をも
利用して感光体上の未転写トナーを清掃除去する
装置が知られている。この装置の導電性ブラシ毛
は、通常、次の様な方法で製造される。
Conventionally, as fur brush cleaning devices for electrophotographic copying machines and the like, brush bristles are formed of a conductive material, and an appropriate bias voltage is applied to the bristles to provide not only mechanical scraping force but also electrostatic suction force. There is known an apparatus that uses the above method to clean and remove untransferred toner on a photoreceptor. The conductive brush bristles of this device are usually manufactured by the following method.
まず、導電性レーヨン糸をパイル織りしてフア
ーブラシ繊維を形成し、この基布の裏側を導電処
理（バツクコーテイング）する。このバツクコー
テイングには、通常、第５図に示される方法が採
用される。即ち、樹脂にカーボンを添加すること
により抵抗値を105Ω以下とした導電性粘着剤51
が充たされた容器５２中に回転ドラム５３を浸
し、フアーブラシ織布５４をその基布５４ａの裏
面とドラム５３周面が転動接触する様に走行させ
ることにより、基布５４ａの裏面に導電性粘着剤
が塗布される。 First, furbrush fibers are formed by pile-weaving conductive rayon threads, and the back side of this base fabric is subjected to conductive treatment (back coating). For this back coating, the method shown in FIG. 5 is usually adopted. In other words, conductive adhesive 51 whose resistance value is 10 5 Ω or less by adding carbon to the resin.
The rotary drum 53 is immersed in the container 52 filled with the material, and the fur brush woven fabric 54 is run so that the back surface of the base fabric 54a and the circumferential surface of the drum 53 are in rolling contact with each other. adhesive is applied.
第５図に示す方法によりバツクコーテイングを
施した場合、粘着剤が、基布５４ａが糸織りの為
に存在する織り方の締め具合の緩い箇所から浸透
したり或るいは不用意に飛び跳ねたりして、表側
のブラシ毛５４ｂにも付着し、抵抗値の低い箇所
が局所的に発生してしまう。
When back coating is applied by the method shown in FIG. 5, the adhesive may penetrate from the loosely tightened areas of the base fabric 54a due to the thread weaving, or may inadvertently splatter. As a result, it also adheres to the brush bristles 54b on the front side, resulting in localized areas of low resistance.
上述の様な抵抗値のバラツキを有する織布を円
筒状基体に巻き付けて構成されたフアーブラシ
を、第１図に示す如きバイアス印加回路にセツト
して所定電圧下で流れる電流値を測定すると、第
６図の如くフアーブラシの局所的低抵抗箇所に対
応する部分でリーク気味の電流が流れる結果が得
られる。このリーク電流が流れた箇所では、バイ
アス電圧がドロツプし静電気的吸引力が消失して
しまう。従つて、例えば、フアーブラシに回収ロ
ールを摺擦させると共に両者間にバイアス電圧を
印加してフアーブラシが感光体上から除去したト
ナーを回収するクリーニング方式等においては、
その局所的低抵抗箇所にトナーの目詰りが発生
し、最終的にはクリーニング不良を引起す。 When a fur brush constructed by winding a woven fabric having a resistance value variation as described above around a cylindrical base is set in a bias application circuit as shown in FIG. 1 and the value of the current flowing under a predetermined voltage is measured, As shown in Fig. 6, a result is obtained in which a current with a tendency to leak flows in a portion of the fur brush corresponding to a locally low resistance point. At the point where this leakage current flows, the bias voltage drops and the electrostatic attractive force disappears. Therefore, for example, in a cleaning method in which a fur brush rubs a collection roll and a bias voltage is applied between the two, the toner removed by the fur brush from the photoreceptor is collected.
Toner clogging occurs in these localized low-resistance locations, ultimately leading to poor cleaning.
又、上述の如くして製造された段階におけるフ
アーブラシの回転抵抗値（フアーブラシを回転さ
せた状態でのフアーブラシの周方向における抵抗
値の平均値）自体が適正範囲より大きい場合が少
なくない。この場合、企図する静電気的吸引力が
得られず、所望の効率の良いクリーニング効果を
発揮させることが困難となる。 Moreover, the rotational resistance value (the average value of the resistance value in the circumferential direction of the fur brush while the fur brush is being rotated) of the fur brush manufactured as described above is often larger than the appropriate range. In this case, the intended electrostatic attraction force cannot be obtained, making it difficult to achieve the desired efficient cleaning effect.
本発明は上記従来の欠点に鑑みなされたもので
あつて、フアーブラシの抵抗値を良好なクリーニ
ング性能を安定して発揮できる周方向で略均一で
且つ適正な値に容易に調整可能なフアーブラシの
抵抗値調整方法を提供することを目的とする。
The present invention has been made in view of the above-mentioned conventional drawbacks, and provides a resistance value of a fur brush that is approximately uniform in the circumferential direction and can be easily adjusted to an appropriate value that can stably exhibit good cleaning performance. The purpose is to provide a value adjustment method.
上記目的は、本発明によれば、円筒状の導電性
基体の周面に、導電性粒子を添加して得られたブ
ラシ毛を多数立設して形成したフアーブラシの抵
抗値調整方法において、前記フアーブラシを回転
させつつ前記ブラシ毛の先端を電極部材に当接さ
せて前記電極部材と前記導電性基体との間に所定
の電圧を所定の時間だけ印加する高圧印加処理を
行ない、前記ブラシ毛のうち所定の抵抗値範囲に
至らない抵抗値のブラシ毛を焼損させると共に、
前記所定の抵抗値範囲を超える抵抗値のブラシ毛
を前記導電性粒子の配列状態を変えることで前記
所定の抵抗値範囲内の抵抗値に変化させ、前記フ
アーブラシの回転時における前記電極部材と前記
導電性基体との間の前記フアーブラシの抵抗値を
周方向で略均一且つ、前記抵抗値の周方向の平均
抵抗値を変化させることによつて達成される。
The above object, according to the present invention, is a method for adjusting the resistance value of a fur brush formed by erecting a large number of brush bristles obtained by adding conductive particles to the circumferential surface of a cylindrical conductive substrate. While rotating the fur brush, a high voltage application process is performed in which the tips of the brush bristles are brought into contact with an electrode member and a predetermined voltage is applied for a predetermined period of time between the electrode member and the conductive substrate. In addition to burning out the brush bristles with a resistance value that does not reach the predetermined resistance value range,
By changing the arrangement state of the conductive particles, the brush bristles having a resistance value exceeding the predetermined resistance value range are changed to a resistance value within the predetermined resistance value range, and when the fur brush is rotated, the resistance value of the brush bristles is changed to the resistance value within the predetermined resistance value range. This is achieved by making the resistance value of the fur brush between it and the conductive substrate substantially uniform in the circumferential direction and by changing the average resistance value of the resistance value in the circumferential direction.
以下、本発明の実施例について図面を参照しな
がら詳述する。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は、本発明方法の一実施例を示した模式
図である。抵抗値を調整処理すべきフアーブラシ
１が駆動回転可能に支承されている。本例で処理
するフアーブラシ１は、円筒状の導電性基体１ａ
の周面上に、カーボンが添加されたレーヨン糸を
パイル織りして成る導電性のブラシ毛織布１ｂを
巻着して形成されている。このフアーブラシ１の
ブラシ毛１ｂと摺擦可能に、電極部材としての導
電性ローラ２がフアーブラシ１と軸方向に略同一
の長さで駆動回転可能に支承されている。そし
て、フアーブラシ１と導電性ローラ２は、夫々、
両者間に必要な高バイアス電圧を印加できる様
に、高電圧供給電源３に接続されている。この印
加回路中には、導通電流値を測定する為の電流計
４が介設されている。 FIG. 1 is a schematic diagram showing an embodiment of the method of the present invention. A fur brush 1 whose resistance value is to be adjusted is rotatably supported. The fur brush 1 treated in this example has a cylindrical conductive base 1a.
It is formed by wrapping an electrically conductive brush wool cloth 1b made by pile-weaving carbon-added rayon yarn around the circumferential surface of. A conductive roller 2 serving as an electrode member is rotatably supported in the axial direction with approximately the same length as the fur brush 1 so that it can rub against the bristles 1b of the fur brush 1. The fur brush 1 and the conductive roller 2 are each
It is connected to a high voltage supply power source 3 so that a necessary high bias voltage can be applied between the two. An ammeter 4 for measuring the conduction current value is interposed in this application circuit.
以上の如き装置により実施される抵抗値調整方
法は以下の通りである。まず、フアーブラシ１及
び導電性ローラ２を、夫々、例えば互いに反対方
向に移動しつつ摺接する様に適切な速度で矢印で
示す方向に回転させる。この状態で、電源３を操
作し所定の大きさのバイアス電圧を所定時間だけ
印加することにより、フアーブラシ１の抵抗値が
周方向で略均一且つ所望の値に変化させられる。 The resistance value adjustment method carried out by the above-mentioned apparatus is as follows. First, the fur brush 1 and the conductive roller 2 are rotated at an appropriate speed in the direction shown by the arrow, for example, while moving in opposite directions to each other so as to slide into contact with each other. In this state, by operating the power supply 3 and applying a bias voltage of a predetermined magnitude for a predetermined time, the resistance value of the fur brush 1 is changed to a desired value substantially uniformly in the circumferential direction.
今、先ず、後述する如きフアーブラシに回収ロ
ーラを摺接させた装置（第４図参照）において実
際に印加する電圧と同じ大きさの400Vのバイア
ス電圧を適長時間印加してみると、フアーブラシ
１が未処理である為、第２図に示される如く、リ
ーク電流を示す波形が多数観測される。次いで、
印加バイアス電圧を1000Vに上げて40秒間印加し
た後、元の400Vに戻す。その結果、まず第１に、
400Vの初期電圧印加時に認められていた多くの
リーク電流が消失して極めて安定した定常電流が
得られる。これは、バイアス電圧を上げることに
より、前述した局所的低抵抗部分のレーヨン糸が
選択的に焼き切れてしまうからである。そして第
２に、初期電圧印加時にはリーク電流を除いた電
流値から求められる回転抵抗値は約29MΩと大き
いが、上述した高圧印加処理後は、リーク電流が
消失すると共に電流値自体の大きさが初期に比べ
て増加し、従つて、それに対応する平均回転抵抗
値が12MΩまで低下する。この傾向は、印加電圧
値とその印加時間に依存することが本願発明者達
により確認されている。そして、一旦低下した抵
抗値は、その後も元に戻らず安定的に略同一値を
保持する。このフアーブラシの平均回転抵抗値自
体が低下する現像は、カーボンを添加して得られ
た導電性レーヨン糸内部のカーボンチエーンが所
定の高電圧が印加されて形成される内部電界によ
り再配列される為に引起されるもの、と考えられ
る。従つて、その再配列については、印加電圧に
閾値が存在し、且つ、それは印加時間にも依存す
ることが推測される。 First, when applying a bias voltage of 400V, which is the same as the voltage actually applied, for an appropriate period of time in a device in which a collection roller is brought into sliding contact with a fur brush as described later (see Figure 4), the fur brush 1 As shown in FIG. 2, many waveforms indicating leakage current are observed. Then,
Increase the applied bias voltage to 1000V, apply it for 40 seconds, and then return it to the original 400V. As a result, first of all,
Much of the leakage current that was observed when the initial voltage of 400V was applied disappears, and an extremely stable steady-state current is obtained. This is because by increasing the bias voltage, the rayon threads in the localized low resistance portions described above are selectively burned out. Second, when the initial voltage is applied, the rotational resistance value calculated from the current value excluding leakage current is as large as approximately 29MΩ, but after the high voltage application process described above, the leakage current disappears and the current value itself decreases. increases compared to the initial value, and therefore the corresponding average rotational resistance value decreases to 12MΩ. The inventors of the present invention have confirmed that this tendency depends on the applied voltage value and its application time. The resistance value, which has once decreased, does not return to its original value and stably maintains substantially the same value. The development in which the average rotational resistance value of the fur brush itself decreases is because the carbon chains inside the conductive rayon yarn obtained by adding carbon are rearranged by the internal electric field formed when a predetermined high voltage is applied. It is thought that this is caused by Therefore, it is assumed that there is a threshold value for the applied voltage for the rearrangement, and that it also depends on the application time.
第３図は、フアーブラシの回転抵抗値と印加バ
イアス電圧値との関係を示したもので、印加時間
は30秒で一定である。これによると、印加電圧が
０〜500Vの低バイアス電圧領域では印加電圧に
拘らず50MΩ程度の一定の回転抵抗値が保持され
るが、600V以上の電圧を印加するとその抵抗値
が略直線的に降下してゆくことがわかる。この回
転抵抗値の定常状態から降下状態へ移行する境界
点の印加電圧をVpとすれば、この電圧値がカー
ボン再配列の為の閾値電圧と解釈される。従つ
て、Vp以上の電圧を適長時間印加することによ
り、局所的な低抵抗部分が消去されて抵抗値が周
方向で略均一化されると共に回転抵抗値が適正範
囲内に設定されたフアーブラシを容易に得ること
ができる。 FIG. 3 shows the relationship between the rotational resistance value of the fur brush and the applied bias voltage value, and the application time is constant at 30 seconds. According to this, in the low bias voltage range of 0 to 500V, a constant rotational resistance value of about 50MΩ is maintained regardless of the applied voltage, but when a voltage of 600V or more is applied, the resistance value decreases approximately linearly. You can see it descending. If the applied voltage at the boundary point where the rotational resistance value shifts from a steady state to a falling state is Vp, this voltage value is interpreted as the threshold voltage for carbon rearrangement. Therefore, by applying a voltage equal to or higher than Vp for an appropriate period of time, the local low-resistance portions are erased, the resistance value is made approximately uniform in the circumferential direction, and the rotational resistance value is set within the appropriate range. can be easily obtained.
ここで、叙上の如くして回転抵抗値を適正に調
整したフアーブラシの使用態様の一例について説
明する。第４図は、電子写真複写機のクリーニン
グ装置に適用した一例を示す模式図である。 Here, an example of how to use the fur brush whose rotational resistance value is appropriately adjusted as described above will be explained. FIG. 4 is a schematic diagram showing an example of application to a cleaning device for an electrophotographic copying machine.
同図において、感光体ドラム５は時計回り方向
に回転され、一様帯電電極６により均一に帯電さ
れた後、図示しない露光手段による原稿の像露光
により静電潜像が形成され、図示しない現像手段
により潜像にトナーが供給されて顕像化される。
次いで、感光体ドラム５上の顕像は転写帯電電極
７により図示しない転写紙上に転写される。この
後、感光体ドラム５は除電ランプ８により光除電
を受けた後、本発明に係るクリーニング装置９の
配設部に至る。 In the figure, the photoreceptor drum 5 is rotated clockwise and is uniformly charged by a uniform charging electrode 6. After that, an electrostatic latent image is formed by image exposure of the document by an exposure means (not shown), and a developing image (not shown) is formed. Toner is supplied to the latent image by the means and the latent image is visualized.
Next, the developed image on the photosensitive drum 5 is transferred onto a transfer paper (not shown) by a transfer charging electrode 7. Thereafter, the photoreceptor drum 5 undergoes optical charge removal by the charge removal lamp 8, and then reaches the installation portion of the cleaning device 9 according to the present invention.
クリーニング装置９においては、感光体ドラム
５表面に開口部を対向させて配設されたケーシン
グ１０内に、上述した如く回転抵抗値を適正に調
整処理したフアーブラシ１１と、周表面を平滑処
理された金属性の回収ロール１２とが互いに摺接
可能に回転自在に支持され、回収ロール１２には
トナー掻き取り用のブレード１３をその先端を圧
接させて設けてあり、その掻き取り位置Ｓの下方
には掻き取られたトナーの回収用スペース１４が
形成されている。 In the cleaning device 9, a fur brush 11 whose rotational resistance value has been appropriately adjusted as described above and a fur brush 11 whose circumferential surface has been smoothed is placed in a casing 10 disposed with an opening facing the surface of the photoreceptor drum 5. A metal recovery roll 12 is rotatably supported so as to be able to slide into contact with each other, and a blade 13 for scraping toner is provided on the recovery roll 12 with its tip pressed against the blade 13 below the scraping position S. A space 14 for recovering the scraped toner is formed.
しかして、フアーブラシ１１と回収ロール１２
は、夫々、所定のバイアス電圧を印加可能な第
１、第２バイアス電源１５，１６に接続されてい
る。この場合、第１バイアス電源１５よりも第２
バイアス電源１６の印加電圧の方が絶体値におい
て適切な差を保つて大きくなる様に、各印加電圧
が設定されている。この様に各バイアス電圧の大
きさを適切に設定することにより、感光体上に残
存するトナーを効率良く除去すると共に円滑に回
収し、良好なクリーニング性能を安定的に発揮さ
せることが可能となるのであるが、その前提条件
として、前述した如く、フアーブラシの抵抗値が
周方向で均一化されると共に適正範囲内に設定さ
れていることが要求される。ところで、本例のフ
アーブラシは、上述した如く、本発明方法の高圧
印加処理を施し、ブラシ毛の局所的低抵抗部分を
焼き切り除去すると共に、その際の印加電圧値と
印加時間を調節してその回転抵抗値が適正範囲内
に収まる様に設定されているから、フアーブラシ
におけるトナーの目詰りの発生を防止し、感光体
等の像担持体上の未転写トナーが、確実に除去さ
れて円滑に回収され、良好なクリーニング性能が
安定して発揮される。 Therefore, the fur brush 11 and the recovery roll 12
are connected to first and second bias power supplies 15 and 16, respectively, which can apply predetermined bias voltages. In this case, the second bias power source 15
Each applied voltage is set so that the applied voltage of the bias power supply 16 is larger while maintaining an appropriate difference in absolute value. By appropriately setting the magnitude of each bias voltage in this way, it is possible to efficiently remove and smoothly collect toner remaining on the photoreceptor, and to consistently exhibit good cleaning performance. However, as a prerequisite for this, as mentioned above, it is required that the resistance value of the fur brush be made uniform in the circumferential direction and set within an appropriate range. By the way, as mentioned above, the fur brush of this example is subjected to the high voltage application process of the method of the present invention to burn off and remove local low resistance portions of the bristles, and at the same time adjust the applied voltage value and application time. Since the rotational resistance value is set within an appropriate range, clogging of toner in the fur brush is prevented, and untransferred toner on the image carrier such as the photoreceptor is reliably removed and smooth. It is recovered and consistently exhibits good cleaning performance.
尚、以上に述べた実施例等では、予めフアーブ
ラシの抵抗値を周方向で所望の値に均一化すべく
調整処理を施した後にクリーニング装置として例
えば電子写真複写機に組み込む方式となつている
が、本発明はこれに限定されるものではなく、実
際に複写機に組み込んだ後に抵抗値の調整処理を
施す構成とすることも可能である。例えば、第４
図に示したクリーニング装置において、各バイア
ス電源１５，１６として印加電圧が可変で且つ調
整時と運転時の二段階に自在に切換え可能に形成
したものを用い、初期の慣らし運転時には調整時
用に各バイアス電源を切り換え、回収ロール１２
とフアーブラシ１１間に前述の閾値電圧Vp以上
の電圧を所定時間印加して所望の回転抵抗値に調
整し、この後、各バイアス電源１５，１６を運転
時用に切り換えておく方式とすることも可能であ
る。この場合、使用途中におけるクリーニング性
能の調整も、上記初期調整と同様な操作により容
易に実施することが可能となる。又、第１図に示
した調整装置においては、導電性ロール２を電極
部材として用いることにより第４図に示す如き回
収ロール１２を設けた実施例における実際の運転
状態と大略一致した状態で回転抵抗値の調整処理
をより正確に実施することができるが、電極部材
として固定式の電極板を設け、これにフアーブラ
シ１が摺擦する構成としても、所望の調整効果は
充分得ることができる。 In the above-described embodiments, the resistance value of the fur brush is adjusted in advance to make it uniform to a desired value in the circumferential direction, and then the fur brush is incorporated into, for example, an electrophotographic copying machine as a cleaning device. The present invention is not limited to this, and it is also possible to adopt a configuration in which the resistance value adjustment process is performed after actually being incorporated into a copying machine. For example, the fourth
In the cleaning device shown in the figure, each bias power source 15, 16 is configured so that the applied voltage is variable and can be freely switched between two stages: adjustment and operation. Switch each bias power supply and collect the roll 12.
It is also possible to adopt a method in which a voltage equal to or higher than the aforementioned threshold voltage Vp is applied for a predetermined period of time between the and fur brush 11 to adjust it to a desired rotational resistance value, and then each bias power source 15, 16 is switched for use during operation. It is possible. In this case, the cleaning performance can be easily adjusted during use by the same operation as the initial adjustment described above. Further, in the adjusting device shown in FIG. 1, by using the conductive roll 2 as an electrode member, the adjustment device rotates in a state that roughly corresponds to the actual operating state in the embodiment in which the collection roll 12 as shown in FIG. 4 is provided. Although the resistance value adjustment process can be carried out more accurately, the desired adjustment effect can also be sufficiently obtained by providing a fixed electrode plate as the electrode member and having the fur brush 1 rub against it.
以上、詳細に説明したように、本発明によれ
ば、所定値以上の電圧を所定時間だけフアーブラ
シに印加することにより、フアーブラシの抵抗値
を周方向で略均一化すると共に適正範囲内に収ま
るように容易に調整することができる。従つて、
像担持体上の残存トナーを効率良く除去すると共
にフアーブラシに目詰りを起すことなく円滑に回
収することが可能となり、良好なクリーニング性
能を安定して発揮させることができる。
As described in detail above, according to the present invention, by applying a voltage higher than a predetermined value to the fur brush for a predetermined period of time, the resistance value of the fur brush is made substantially uniform in the circumferential direction and kept within an appropriate range. can be easily adjusted. Therefore,
It becomes possible to efficiently remove the residual toner on the image carrier and smoothly collect it without clogging the fur brush, and it is possible to stably exhibit good cleaning performance.
第１図は本発明の一実施例を示した模式図、第
２図は本発明の一実施例の結果を示した電流特性
図、第３図は回転抵抗値と印加電圧との関係を示
した特性図、第４図は本発明により得られたフア
ーブラシの使用態様の一例を示した模式的断面
図、第５図はフアーブラシのバツクコーテイング
工程を示した説明図、第６図は未処理のフアーブ
ラシの抵抗値分布を示した電流特性図である。
１，１１……フアーブラシ、２……導電性ロー
ル、３……高電圧供給電源、４……電流計、５…
…感光体ドラム、１２……回収ロール、１５……
第１バイアス電源、１６……第２バイアス電源。
Fig. 1 is a schematic diagram showing an embodiment of the present invention, Fig. 2 is a current characteristic diagram showing the results of an embodiment of the present invention, and Fig. 3 shows the relationship between rotational resistance value and applied voltage. FIG. 4 is a schematic sectional view showing an example of how the fur brush obtained by the present invention is used, FIG. 5 is an explanatory diagram showing the back coating process of the fur brush, and FIG. It is a current characteristic diagram showing the resistance value distribution of the fur brush. 1, 11... Fur brush, 2... Conductive roll, 3... High voltage supply power source, 4... Ammeter, 5...
...Photoconductor drum, 12...Recovery roll, 15...
1st bias power supply, 16...2nd bias power supply.
Claims (1)
添加して得られたブラシ毛を多数立設して形成し
たフアーブラシの抵抗値調整方法において、前記
フアーブラシを回転させつつ前記ブラシ毛の先端
を電極部材に当接させて前記電極部材と前記導電
性基体との間に所定の電圧を所定の時間だけ印加
する高圧印加処理を行ない、前記ブラシ毛のうち
所定の抵抗値範囲に至らない抵抗値のブラシ毛を
焼損させると共に、前記所定の抵抗値範囲を超え
る抵抗値のブラシ毛を前記導電性粒子の配列状態
を変えることで前記所定の抵抗値範囲内の抵抗値
に変化させ、前記フアーブラシの回転時における
前記電極部材と前記導電性基体との間の前記フア
ーブラシの抵抗値を周方向で略均一且つ、前記抵
抗値の周方向の平均抵抗値を変化させることを特
徴とするフアーブラシの抵抗値調整方法。1. In a method for adjusting the resistance value of a fur brush formed by erecting a large number of bristles obtained by adding conductive particles on the circumferential surface of a cylindrical conductive substrate, the fur brush is rotated and the bristles are A high voltage application process is performed in which a predetermined voltage is applied for a predetermined time between the electrode member and the conductive substrate by bringing the tip into contact with an electrode member, and the resistance of the brush bristles does not reach a predetermined resistance value range. Burning out the brush bristles having a resistance value, and changing the resistance value of the brush bristles having a resistance value exceeding the predetermined resistance value range to a resistance value within the predetermined resistance value range by changing the arrangement state of the conductive particles; A fur brush characterized in that the resistance value of the fur brush between the electrode member and the conductive substrate during rotation of the fur brush is substantially uniform in the circumferential direction, and the average resistance value of the resistance value in the circumferential direction is changed. How to adjust resistance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15894085A JPS6218589A (en) | 1985-07-18 | 1985-07-18 | Method for adjusting resistance value of fur brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15894085A JPS6218589A (en) | 1985-07-18 | 1985-07-18 | Method for adjusting resistance value of fur brush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6218589A JPS6218589A (en) | 1987-01-27 |
| JPH0155456B2 true JPH0155456B2 (en) | 1989-11-24 |
Family
ID=15682665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15894085A Granted JPS6218589A (en) | 1985-07-18 | 1985-07-18 | Method for adjusting resistance value of fur brush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6218589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4286252A1 (en) | 2022-05-30 | 2023-12-06 | Mazda Motor Corporation | Driver state determination apparatus |
| EP4286253A1 (en) | 2022-05-30 | 2023-12-06 | Mazda Motor Corporation | Driver state determination apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2774611B1 (en) * | 1998-02-11 | 2000-04-28 | Daussan & Co | DEVICE FOR FILTERING AND TREATING MOLTEN METAL |
-
1985
- 1985-07-18 JP JP15894085A patent/JPS6218589A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4286252A1 (en) | 2022-05-30 | 2023-12-06 | Mazda Motor Corporation | Driver state determination apparatus |
| EP4286253A1 (en) | 2022-05-30 | 2023-12-06 | Mazda Motor Corporation | Driver state determination apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6218589A (en) | 1987-01-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |