JPS6341567B2 - - Google Patents
Info
- Publication number
- JPS6341567B2 JPS6341567B2 JP59015079A JP1507984A JPS6341567B2 JP S6341567 B2 JPS6341567 B2 JP S6341567B2 JP 59015079 A JP59015079 A JP 59015079A JP 1507984 A JP1507984 A JP 1507984A JP S6341567 B2 JPS6341567 B2 JP S6341567B2
- Authority
- JP
- Japan
- Prior art keywords
- brush
- conductive
- resin
- fibers
- present
- 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
- 239000000835 fiber Substances 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 11
- 239000004917 carbon fiber Substances 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 230000003068 static effect Effects 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000010000 carbonizing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
Landscapes
- Brushes (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、導電性繊維を多数植設した導電性ブ
ラシに関し、特に電子写真複写機等のブラシ帯電
装置や除電装置に使用する導電性ブラシに関する
ものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a conductive brush in which a large number of conductive fibers are implanted, and particularly to a conductive brush used in a brush charging device or a static eliminator of an electrophotographic copying machine or the like. It is related to.
従来、電子写真複写機等の帯電装置としては、
コロナ放電を利用したコロナ帯電器が主に使用さ
れているが、コロナ放電時に3kv〜10kv程度の高
電圧を要して危険であり、かつコロナ放電の際に
オゾンが発生して帯電器周辺の機器に損傷を与え
てしまう欠点があるため、最近このコロナ帯電器
に替つて導電性ブラシを用いたブラシ帯電装置の
開発が盛んに行なわれている。
Conventionally, charging devices for electrophotographic copying machines, etc.
Corona chargers that use corona discharge are mainly used, but they are dangerous because they require a high voltage of about 3kV to 10kV during corona discharge, and ozone is generated during corona discharge, causing damage to the surrounding area of the charger. Since the corona charger has the drawback of damaging equipment, recently, brush charging devices using conductive brushes have been actively developed to replace the corona charger.
すなわちこの装置は、第１図に示すようにロー
ラ１表面に、体積抵抗値１×102〜２×104Ωcm程
度の導電性を有する接触子２、例えば長さ数mm
で、直径約20μm程度の導電性繊維、具体的には
カーボンを分散させた繊維を多数植設した導電性
ブラシ３を、被帯電体である感光ドラム４の近傍
位置に、それとのニツプ幅ａが７〜15mm程度とな
るように配設して成るもので、この導電性ブラシ
３を回転数500〜1000rpm程度の速さで回転させ
ながら感光ドラム４表面に接触させ、かつこの導
電性ブラシ３に500v〜2kv程度の低電圧を印加し
て上記感光ドラム４を帯電させるものである。 That is, as shown in FIG. 1, this device is equipped with a contact 2 having a conductivity of about 1×10 2 to 2×10 4 Ωcm, for example, several mm in length, on the surface of a roller 1.
A conductive brush 3 in which a large number of conductive fibers with a diameter of about 20 μm, specifically carbon-dispersed fibers are implanted, is placed near the photosensitive drum 4, which is the object to be charged, with a nip width a between it and the conductive brush 3. This conductive brush 3 is placed in contact with the surface of the photosensitive drum 4 while rotating at a speed of about 500 to 1000 rpm, and the conductive brush 3 The photosensitive drum 4 is charged by applying a low voltage of about 500v to 2kv to the photosensitive drum 4.
従つてこのブラシ帯電装置は、コロナ帯電器と
較べて高電圧を要しないため安全性が高く、かつ
オゾンの発生もないため装置周辺の機器に損傷を
与えるようなこともない長所を有している。 Therefore, compared to a corona charger, this brush charging device does not require high voltage and is therefore safer, and has the advantage that it does not generate ozone and therefore does not cause damage to equipment around the device. There is.
しかしながらこの装置においては、上記導電性
ブラシの接触子を常時被帯電体表面に接触させる
必要があるため、この接触圧により上記接触子が
根本からカール状に変形してへたりが生じ、長期
に互つて使用していると接触不良による帯電むら
が起こり易すく、例えば電子写真複写機において
は、コピー画質に白ぬけ等の悪影響を及ぼしてし
まう欠点があつた。 However, in this device, it is necessary to keep the contact of the conductive brush in constant contact with the surface of the charged object, and this contact pressure causes the contact to curl from the root and become sagging, resulting in long-term damage. If they are used together, uneven charging is likely to occur due to poor contact, and in electrophotographic copying machines, for example, this has the disadvantage of adversely affecting copy image quality, such as white spots.
本発明は、これらブラシ帯電装置等に使用する
導電性ブラシの上記欠点を除去、改良したもの
で、被帯電体表面に長期間圧接してもへたりを起
こさない導電性ブラシを提供することを目的とす
るものである。
The present invention eliminates and improves the above-mentioned drawbacks of the conductive brushes used in these brush charging devices, etc., and aims to provide a conductive brush that does not sag even when pressed against the surface of a charged object for a long period of time. This is the purpose.
すなわち本発明の導電性ブラシは、弾力性の強
いカーボンフアイバーを導電性樹脂で被覆して成
る導電性繊維を、ローラ表面に多数植設して成る
もので、このカーボンフアイバーの弾性力により
導電性ブラシの上記へたりを防止するものであ
る。
In other words, the conductive brush of the present invention is made by planting a large number of conductive fibers made of highly elastic carbon fibers coated with a conductive resin on the roller surface, and the elastic force of the carbon fibers causes the conductive brush to become conductive. This prevents the brush from becoming stale.
ここで上記カーボンフアイバーとは、アクリル
系繊維、例えばアクリルニトリル繊維又はポリメ
タクリル繊維等を加熱酸化し、かつ窒素ガス中高
熱で焼成してなる炭化処理により得られるもの
で、比強度が60Kg／mm2以上、比弾性率が15×103
Kg／mm2以上の導電性の優れた繊維である。 Here, the above-mentioned carbon fiber is obtained by carbonizing acrylic fibers, such as acrylonitrile fibers or polymethacrylic fibers, by heating and oxidizing them, and then firing them at high heat in nitrogen gas, and has a specific strength of 60 kg/mm. 2 or more, specific elastic modulus is 15×10 3
It is a fiber with excellent conductivity of Kg/mm 2 or more.
また導電性樹脂とは、導電性微粉末、例えば金
属粉末やカーボン粉末を、適宜樹脂に分散、混入
させたもので、具体的には、ポリエステル樹脂内
に金属粉末を分散させた樹脂や、スチロールと
ABS樹脂とから成る混合樹脂内にカーボン粉末
を分散させた樹脂（共に体積抵抗値１×102〜１
×104Ωcm）、あるいはフツ化ビニリデン樹脂内に
カーボン粉末を10〜30％含有させた樹脂（体積抵
抗値１×103〜１×105Ωcm）等がある。 Conductive resin is a resin in which conductive fine powder, such as metal powder or carbon powder, is appropriately dispersed or mixed into a resin. and
A resin in which carbon powder is dispersed in a mixed resin consisting of ABS resin (both have a volume resistivity of 1×10 2 to 1
x10 4 Ωcm), or a resin containing 10 to 30% carbon powder in vinylidene fluoride resin (volume resistivity 1 x 10 3 to 1 x 10 5 Ωcm).
そして上記導電性樹脂を溶融し、かつこれで上
記カーボンフアイバーを被覆して第２図に示すよ
うに導電性樹脂５とカーボンフアイバー６とから
成る導電性繊維を得、これを従来のブラシ加工技
術によりロール７表面に多数植設して、第３図に
示す本発明の導電性ブラシ８とするものである。 Then, the conductive resin is melted and the carbon fiber is covered with it to obtain a conductive fiber consisting of conductive resin 5 and carbon fiber 6 as shown in FIG. A large number of brushes are planted on the surface of the roll 7 to form the conductive brush 8 of the present invention shown in FIG.
以下本発明の実施例について説明する。 Examples of the present invention will be described below.
（実施例 １）
アクリルニトリル繊維を炭化処理して得られる
長繊維のカーボンフアイバーの表面に、カーボン
粉末の分散させたポリアクリル樹脂を溶融塗布し
て、体積抵抗値１×102〜１×103Ωcm、ヤング率
1100〜2500Kg／mm2及び太さ約２〜５デニールの導
電性繊維を製造した。これをローラ表面に長さ約
９mmでかつ密度８×103〜25×103本／平行インチ
で植設して導電性ブラシを得、ブラシ帯電装置の
導電性ブラシとして使用した。(Example 1) A polyacrylic resin in which carbon powder is dispersed is melt-coated on the surface of a long carbon fiber obtained by carbonizing acrylonitrile fiber, and a volume resistivity of 1×10 2 to 1×10 is obtained. 3 Ωcm, Young's modulus
Conductive fibers having a thickness of 1100 to 2500 Kg/mm 2 and a thickness of about 2 to 5 denier were produced. This was implanted on the surface of the roller with a length of about 9 mm and a density of 8×10 3 to 25×10 3 pieces/parallel inch to obtain a conductive brush, which was used as a conductive brush of a brush charging device.
すなわち第４図に示すように上記導電性ブラシ
９のローラ１０を駆動手段（図示せず）により回
転数約1000rpmの速度で矢印Ａ方向に回動できる
ように軸受させ、かつ図示しない電源に接続させ
て電圧が印加できるように構成し、この導電性ブ
ラシ９を感光ドラム１１の近傍位置にそれとのニ
ツプ幅(a)′が７mm程度となるように配設してブラ
シ帯電装置とした。 That is, as shown in FIG. 4, the roller 10 of the conductive brush 9 is mounted on a bearing so that it can rotate in the direction of arrow A at a rotation speed of about 1000 rpm by a driving means (not shown), and is connected to a power source (not shown). The conductive brush 9 was arranged in the vicinity of the photosensitive drum 11 so that the nip width (a)' was about 7 mm to form a brush charging device.
そして上記装置の導電性ブラシ９にマイナス
900Vの印加電圧をかけると共に、回転数約
1000rpmの速度で回動させて感光ドラム１１に初
期電位約800Vを均一に帯電させ、露光装置１２
により静電潜像を形成し、かつ磁気ブラシ現像装
置１３によりトナー現像した後、コピー用紙１４
上に上記トナー像を転写して鮮明なコピーを得
た。 And the negative to the conductive brush 9 of the above device.
While applying an applied voltage of 900V, the rotation speed is approximately
The photosensitive drum 11 is rotated at a speed of 1000 rpm to uniformly charge the initial potential of about 800 V, and the exposure device 12
After forming an electrostatic latent image with the magnetic brush developing device 13 and developing the toner with the magnetic brush developing device 13, the copy paper 14 is
A clear copy was obtained by transferring the toner image thereon.
ここで本発明の導電性ブラシ９は、弾性力の強
いカーボンフアイバーから成る導電性繊維を使用
しており、外圧に対してブラシの毛がへたらない
ため、上記ブラシ帯電装置を長期間使用しても帯
電特性の劣化はみられず、良好なコピーを維持す
ることができた。 Here, the conductive brush 9 of the present invention uses conductive fibers made of carbon fiber with strong elasticity, and the bristles of the brush do not weaken due to external pressure, so the brush charging device described above can be used for a long period of time. However, no deterioration in charging characteristics was observed, and good copies could be maintained.
尚第４図中、１５は転写装置、１６はクリーニ
ング装置、１７は除電ランプをそれぞれ示してい
る。 In FIG. 4, 15 is a transfer device, 16 is a cleaning device, and 17 is a discharge lamp.
（実施例 ２）
実施例１のカーボンフアイバーの表面に、カー
ボン粉末を分散させたポリアミド樹脂（ナイロン
６）を被覆して体積抵抗値２×102〜２×104Ω
cm、ヤング率900〜1600Kg／mm2、太さ約20μmの導
電性繊維を製造し、これをローラ表面に、長さ約
９mm、密度10万〜30万本／平方インチで植設して
導電性ブラシを得た。(Example 2) The surface of the carbon fiber of Example 1 was coated with polyamide resin (nylon 6) in which carbon powder was dispersed to give a volume resistivity of 2×10 2 to 2×10 4 Ω.
cm, Young's modulus of 900 to 1,600 Kg/ mm2 , and a thickness of about 20 μm. Conductive fibers are planted on the roller surface with a length of about 9 mm and a density of 100,000 to 300,000 fibers/in2 to conduct electricity. Got a sex brush.
この導電性ブラシは、実施例１のものと同様、
ブラシの毛のへたりが無いため、ブラシ帯電装置
に適するものであつた。 This conductive brush is similar to that of Example 1,
Since the bristles of the brush did not settle, it was suitable for a brush charging device.
尚上記実施例は、本発明の導電性ブラシを、ブ
ラシ帯電装置に使用した場合の例であるが、本発
明の用途はこのブラシ帯電装置に限定されるもの
ではなく、例えば複写機内に配設されているゴム
ロールや用紙の静電気を除去するための除電ブラ
シとしても利用することができ、かかる場合もブ
ラシのへたりが生じないため長期使用に適するも
のである。 Although the above embodiment is an example in which the conductive brush of the present invention is used in a brush charging device, the application of the present invention is not limited to this brush charging device, and for example, the conductive brush of the present invention may be installed in a copying machine. It can also be used as a static eliminating brush to remove static electricity from rubber rolls and paper, and in such cases, the brush does not wear out, making it suitable for long-term use.
本発明の導電性ブラシは、以上のように弾性力
の強いカーボンフアイバーを、導電性樹脂で被覆
して成る導電性繊維を、ローラ表面に多数植設し
たものであるため、上記カーボンフアイバーの弾
性力によりブラシの外径が外圧により変化してし
まうことすなわちへたりが生ずることがない。
As described above, the conductive brush of the present invention has a large number of conductive fibers made of highly elastic carbon fibers coated with conductive resin on the roller surface. The outer diameter of the brush does not change due to external pressure, that is, it does not become sagging.
従つてブラシ帯電装置等の導電性ブラシとして
使用した場合、長期に互つて使用しても安定した
帯電が可能で、かつ耐久性も増し、ブラシ帯電装
置等の性能を著しく向上させることができる等、
本発明の実用上の効果は多大である。 Therefore, when used as a conductive brush in a brush charging device, etc., stable charging is possible even after repeated use over a long period of time, and durability is increased, which can significantly improve the performance of the brush charging device, etc. ,
The practical effects of the present invention are significant.
第１図はブラシ帯電装置の概略側面図、第２図
〜第４図は本発明を示すもので、第２図は本発明
に使用する導電性繊維の拡大斜視図、第３図は本
発明の導電性ブラシの斜視図を示し、第４図は本
発明を複写機のブラシ帯電装置に利用した場合の
概略側面図をそれぞれ示す。
符号説明、５…導電性樹脂、６…カーボンフア
イバー、７…ローラ、８…導電性ブラシ。
FIG. 1 is a schematic side view of a brush charging device, FIGS. 2 to 4 show the present invention, FIG. 2 is an enlarged perspective view of conductive fibers used in the present invention, and FIG. 3 is a diagram showing the present invention. 4 shows a perspective view of a conductive brush, and FIG. 4 shows a schematic side view when the present invention is applied to a brush charging device of a copying machine. Description of symbols, 5... Conductive resin, 6... Carbon fiber, 7... Roller, 8... Conductive brush.
Claims (1)
成る導電性繊維を、ローラ表面に多数植設したこ
とを特徴とする導電性ブラシ。1. A conductive brush characterized in that a large number of conductive fibers made of carbon fibers coated with a conductive resin are planted on the roller surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1507984A JPS60160907A (en) | 1984-02-01 | 1984-02-01 | Conductive brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1507984A JPS60160907A (en) | 1984-02-01 | 1984-02-01 | Conductive brush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60160907A JPS60160907A (en) | 1985-08-22 |
| JPS6341567B2 true JPS6341567B2 (en) | 1988-08-17 |
Family
ID=11878837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1507984A Granted JPS60160907A (en) | 1984-02-01 | 1984-02-01 | Conductive brush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60160907A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101024005B1 (en) * | 2010-05-06 | 2011-03-29 | (주)우주일렉트로닉스 | Conductivity wire brush for electric contact |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5487233A (en) * | 1977-12-22 | 1979-07-11 | Nec Corp | Cleaning web for zerography |
-
1984
- 1984-02-01 JP JP1507984A patent/JPS60160907A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5487233A (en) * | 1977-12-22 | 1979-07-11 | Nec Corp | Cleaning web for zerography |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60160907A (en) | 1985-08-22 |
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