JPH0262563A - Conductive brush electrostatic charger - Google Patents
Conductive brush electrostatic chargerInfo
- Publication number
- JPH0262563A JPH0262563A JP21256788A JP21256788A JPH0262563A JP H0262563 A JPH0262563 A JP H0262563A JP 21256788 A JP21256788 A JP 21256788A JP 21256788 A JP21256788 A JP 21256788A JP H0262563 A JPH0262563 A JP H0262563A
- Authority
- JP
- Japan
- Prior art keywords
- conductive
- fibers
- conductive brush
- charged
- brush
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000835 fiber Substances 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229920000297 Rayon Polymers 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 239000002964 rayon Substances 0.000 abstract description 2
- 238000007786 electrostatic charging Methods 0.000 abstract 2
- 108091008695 photoreceptors Proteins 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009941 weaving Methods 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
導電性繊維を植毛して形成され、電子写真記録プロセス
における被帯電体の帯電用に使用される導電ブラシ帯電
器に関し、
従来のブラシ帯電時に見られる筋状の帯電むらの発生を
防止することを目的とし、
導電性繊維を植毛して形成され、電子写真プロセスにお
ける被帯電体の帯電用に使用される導電ブラシ帯電器に
おいて、前記導電性繊維を、前記被帯電体の移動方向と
ほぼ直角方向にループを形成するように植毛した構成と
する。[Detailed Description of the Invention] [Summary] Regarding a conductive brush charger formed by flocking conductive fibers and used for charging an object to be charged in an electrophotographic recording process, it is possible to reduce the streaks seen when charging a conventional brush. In a conductive brush charger that is formed by flocking conductive fibers and is used for charging a charged object in an electrophotographic process, the conductive fibers are The hairs are implanted to form a loop in a direction substantially perpendicular to the moving direction of the charged object.
本発明は、導電性繊維を植毛して形成され、電子写真プ
ロセスにおける被帯電体の帯電用に使用される導電ブラ
シ帯電器に関する。The present invention relates to a conductive brush charger formed by flocking conductive fibers and used for charging an object to be charged in an electrophotographic process.
電子写真記録プロセスは、レーザプリンタ、複写機等に
広く実用化されている。この記録方式は、感光ドラム等
の感光体を記録媒体に用い、帯電、画像露光、現像、転
写、定着、除電、クリーニングの工程で記録が行われる
。帯電工程は、画像露光による潜像形成に先立って感光
体を一様に帯電する工程で、一般にはコロナ帯電器が使
用されている。このコロナ帯電器は、数KVの高電圧を
コロナワイヤに印加するものであるため、5〜10KV
の高圧電源が必要であるとともに、湿度、粉塵等の影響
を受は易いため、信頼性が低いという欠点がある。また
、・コロナ放電時に発生するイオンは、臭気を発生する
とともに、感光体の特性劣化を速めるという不具合があ
る。更に、近年オゾンの人体への有害性が問題となって
いる。Electrophotographic recording processes are widely used in laser printers, copying machines, and the like. This recording method uses a photoconductor such as a photoconductor drum as a recording medium, and performs recording through the steps of charging, image exposure, development, transfer, fixing, neutralization, and cleaning. The charging step is a step of uniformly charging the photoreceptor prior to forming a latent image by image exposure, and generally a corona charger is used. This corona charger applies a high voltage of several KV to the corona wire, so the voltage is 5 to 10 KV.
It requires a high-voltage power source and is easily affected by humidity, dust, etc., so it has the disadvantage of low reliability. In addition, ions generated during corona discharge generate odor and accelerate the deterioration of the characteristics of the photoreceptor. Furthermore, in recent years, the toxicity of ozone to the human body has become a problem.
最近、上記の問題点を解決できるものとして、コロナ帯
電器の代わりに、導電性の繊維を植毛した導電ブラシ帯
電器を感光体に接触させて帯電する導電ブラシ帯電方式
が注目されている。Recently, as a solution to the above-mentioned problems, a conductive brush charging method has been attracting attention, in which a conductive brush charger made of conductive fibers is brought into contact with a photoreceptor to charge the photoreceptor instead of a corona charger.
第3図は従来の導電ブラシ帯電器を用いた導電ブラシ帯
電方式を示す斜視図で、図中、1は被帯電体(感光ドラ
ム)、2は導電ブラシ帯電器、3は導電ブラシ帯電器2
に電圧を印加する電源である。FIG. 3 is a perspective view showing a conductive brush charging method using a conventional conductive brush charger. In the figure, 1 is a charged object (photosensitive drum), 2 is a conductive brush charger, and 3 is a conductive brush charger 2.
This is a power supply that applies voltage to the
導電ブラシ帯電器2は、第4図に詳すように、アルミニ
ウム等の導電性材料で形成された導電性基板4上に、導
電性繊維7を織って作った導電ブラシ6を、導電性接着
剤5により固定して構成され、被帯電体lに導電ブラシ
6の先端を接触させて配置されている。As shown in detail in FIG. 4, the conductive brush charger 2 includes a conductive brush 6 made by weaving conductive fibers 7 on a conductive substrate 4 made of a conductive material such as aluminum, by conductive adhesive. The conductive brush 6 is configured to be fixed with an agent 5, and the tip of a conductive brush 6 is placed in contact with the charged object 1.
導電ブラシ6は、−船釣には、先端が切断され独立した
導電性繊維を基布に折り込んだものを使用している。そ
のため、導電ブラシ6は、腰が弱(、長時間使用すると
、へたりを生じて均一な帯電ができなくなったり、へた
りにより毛が折れて脱落することがあった。For boat fishing, the conductive brush 6 is made by cutting off the tip and folding independent conductive fibers into a base fabric. Therefore, the conductive brush 6 has a weak stiffness (if used for a long time, it may become stale and cannot be charged uniformly, or the bristles may break and fall off due to the sagging).
この問題を解決するために、第5図に示すように、導電
性繊維9をループ状に基布に織り込んで導電ブラシ8を
形成することで、導電性繊維のへたりを防止する提案が
されている。In order to solve this problem, a proposal has been made to prevent the conductive fibers from becoming sag by weaving conductive fibers 9 into the base fabric in a loop to form a conductive brush 8, as shown in FIG. ing.
しかし、これらの従来方式では、筋状の帯電むらが発生
する。これは、導電ブラシが被帯電体に接触している部
分のみ帯電し、完全に被帯電体の全面積をカバーできな
いためである。この帯電むらは、先端が切断され独立し
た導電性繊維を用いる第4図の場合に比較的顕著に現れ
る。そして、導電性繊維をループ状に植毛した第5図の
場合でも、従来無造作に植毛しているため、ややもする
と筋状の帯電むらが発生していた。However, in these conventional methods, streak-like charging unevenness occurs. This is because only the portion of the conductive brush that is in contact with the object to be charged is charged, and the entire area of the object to be charged cannot be completely covered. This charging unevenness appears relatively prominently in the case of FIG. 4, in which independent conductive fibers with cut ends are used. Even in the case of FIG. 5, in which the conductive fibers are implanted in a loop shape, since the conductive fibers are conventionally implanted casually, streak-like charging unevenness often occurs.
本発明は従来ブラシ帯電時に見られる筋状の帯電むらの
発生を防止できる導電ブラシ帯電器を提供することを目
的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a conductive brush charger that can prevent the occurrence of streak-like charging unevenness that is conventionally seen during brush charging.
上述の目的を達成するため、本発明では、導電性繊維を
植毛して形成され、電子写真記録プロセスにおける被帯
電体の帯電用に使用される導電ブラシ帯電器において、
前記導電性繊維を、前記被帯電体の移動方向とほぼ直角
方向にループを形成するように植毛した構成とする。In order to achieve the above object, the present invention provides a conductive brush charger formed by flocking conductive fibers and used for charging an object to be charged in an electrophotographic recording process.
The conductive fibers are flocked to form a loop in a direction substantially perpendicular to the moving direction of the charged object.
従来、導電ブラシの先端が切断されている場合は、該導
電ブラシの先端が被帯電体に点接触しているため、筋状
の帯電むらが発生した。また、導電性繊維をループ状に
基布に織り込んで導電ブラシを形成する方式の場合でも
、無造作に植毛されているため、被帯電体に線接触はす
るものの、部分的に被帯電体の移動方向と平行方向に線
接触するものがあり、ややもすると前者の先端が切断さ
れた導電ブラシを用いた場合と同様に筋状の帯電むらが
発生することがあった。Conventionally, when the tip of a conductive brush is cut off, the tip of the conductive brush is in point contact with the object to be charged, resulting in streak-like charging unevenness. Furthermore, even in the case of a method in which conductive fibers are woven into a base cloth in a loop shape to form a conductive brush, since the conductive fibers are randomly flocked, although there is a line contact with the charged object, there is some movement of the charged object. There is a line contact in the direction parallel to the direction, and if the former conductive brush is used, streak-like charging unevenness may occur as in the case of using a conductive brush with the tip cut off.
これに対し、本発明では、導電性繊維が被帯電体の移動
方向とほぼ直角方向にループを形成するように植毛され
ているため、導電性繊維と被帯電体は、常に被帯電体の
移動方向と直角方向の線接触をし、従来問題となってい
た筋状の帯電むらは発生しない。In contrast, in the present invention, since the conductive fibers are flocked to form a loop in a direction substantially perpendicular to the moving direction of the charged object, the conductive fibers and the charged object are always connected to each other when the charged object moves. Line contact is made in the direction perpendicular to the direction, and the streak-like charging unevenness that has been a problem in the past does not occur.
以下、第1図及び第2図に関連して本発明の詳細な説明
する。The present invention will now be described in detail with reference to FIGS. 1 and 2.
第1図は本発明に係る導電ブラシ帯電器の構造、配置説
明図で、図中、10は導電ブラシ帯電器である。FIG. 1 is an explanatory diagram of the structure and arrangement of a conductive brush charger according to the present invention, and in the figure, 10 is a conductive brush charger.
導電ブラシ帯電器10は、導電性基板11上に、導電性
繊維12が被帯電体1の移動方向とほぼ直角方向(第1
図の左右方向)にループを形成するように植毛された導
電ブラシ13を、導電性接着剤14により固定して構成
され、被帯電体1に導電ブラシ13の先端を接触させて
配置されている。The conductive brush charger 10 has conductive fibers 12 arranged on a conductive substrate 11 in a direction substantially perpendicular to the moving direction of the charged object 1 (a first
The conductive brush 13 is constructed by fixing the conductive brush 13 with bristles so as to form a loop in the left-right direction in the figure with a conductive adhesive 14, and the tip of the conductive brush 13 is placed in contact with the charged object 1. .
第2図は導電性繊維12の織布要領説明図で、実線、点
線、−点破線及び二点破線で示す4本の繊維が交互に植
毛されている。導電ブラシ帯電器IOには図示しない電
源より電圧が印加されるが、被帯電体(感光ドラム〉
■の表面の有機感光体の帯電特性はマイナスであるため
、導電ブラシ帯電器IOには、例えば−IKVの電圧が
印加される。導電性繊維12には、例えばレーヨン繊維
内にカーボン粒子を一様に分散することで導電性を付与
したもの (ユニチカ製「レッグ」)が使用され、繊維
の太さは10−15μmで、繊維の抵抗値は繊維1本当
り103Ωに選ばれている。また、この導電性繊維12
は、カネボウ製の「ベルトロン」 (導電性ナイロン)
を用いても良い。導電ブラシ13は、長さ12霞■のこ
れらの導電性繊維を、織り込み部分の密度155本/龍
2で植毛して構成され、導電ブラシ帯電器10の幅は1
5龍である。FIG. 2 is an explanatory diagram of the method of weaving the conductive fibers 12, in which four fibers indicated by solid lines, dotted lines, -dot-dashed lines, and double-dashed lines are alternately flocked. A voltage is applied to the conductive brush charger IO from a power source (not shown), but the object to be charged (photosensitive drum)
Since the charging characteristic of the organic photoreceptor on the surface of (2) is negative, a voltage of -IKV, for example, is applied to the conductive brush charger IO. As the conductive fiber 12, for example, a rayon fiber with conductivity imparted by uniformly dispersing carbon particles ("Leg" manufactured by Unitika) is used, and the fiber thickness is 10-15 μm. The resistance value is chosen to be 103Ω per fiber. Moreover, this conductive fiber 12
is Kanebo's "Beltron" (conductive nylon)
You may also use The conductive brush 13 is constructed by implanting these conductive fibers with a length of 12 mm at a density of 155 fibers/2 mm in the woven part, and the width of the conductive brush charger 10 is 1 mm.
5 dragons.
このような構成の導電ブラシ帯電器1oを使用すること
により、従来問題となっている帯電むらを防止すること
ができた。この効果は、前述したように、導電性繊維1
2が被帯電体1の移動方向とほぼ直角方向にループを形
成するように植毛されていて、導電性繊維12と被帯電
体lが常に被帯電体1の移動方向と直角方向に線接触を
することにより得られるものである。By using the conductive brush charger 1o having such a configuration, it was possible to prevent uneven charging, which has been a problem in the past. As mentioned above, this effect is caused by the conductive fiber 1
2 are flocked to form a loop in a direction substantially perpendicular to the moving direction of the charged object 1, and the conductive fibers 12 and the charged object 1 are always in line contact in the direction perpendicular to the moving direction of the charged object 1. It is obtained by doing.
なお、導電性基板11の幅の1 / nの幅の1本の導
電ブラシ13を、長手方向の位相をそれぞれずらして導
電性基板11に接着して導電ブラシ帯電器を構成するよ
うにすると、−層効果的である。Note that if one conductive brush 13 having a width of 1/n of the width of the conductive substrate 11 is adhered to the conductive substrate 11 with respective phases shifted in the longitudinal direction to configure a conductive brush charger, -Layer effective.
また、図示を省略したが、前述と同様の導電ブラシを、
アルミニウムの円筒又は円柱に導電性接着剤で張り付け
て導電ブラシ帯電器を構成しても良いが、この場合は動
力伝達系により該導電ブラシ帯電器を被帯電体上で回転
させて使用する。この場合は前述と同様に筋状の帯電む
らを防止できる外に、帯電効率を改善することができる
。In addition, although not shown, a conductive brush similar to that described above,
A conductive brush charger may be constructed by pasting it on an aluminum cylinder or cylinder with a conductive adhesive, but in this case, the conductive brush charger is rotated over the object to be charged by a power transmission system. In this case, in addition to preventing streak-like charging unevenness as described above, charging efficiency can be improved.
以上述べたように、本発明によれば、導電性繊維を被帯
電体の移動方向とほぼ直角方向にループを形成するよう
に植毛することによって、導電性繊維と被帯電体は、常
に被帯電体の移動方向と直角方向の線接触をするため、
従来のブラシ帯電時に見られる筋状の帯電むらを防止す
ることが可能である。As described above, according to the present invention, by planting the conductive fibers so as to form a loop in a direction substantially perpendicular to the moving direction of the charged object, the conductive fibers and the charged object are always connected to each other. In order to make a line contact in the direction perpendicular to the direction of body movement,
It is possible to prevent streak-like charging unevenness that occurs during conventional brush charging.
第1図は本発明の実施例の導電ブラシ帯電器の構造、配
置説明図、
第2図は本発明の実施例の導電性繊維の織布要領説明図
、
第3図は従来の導電ブラシ帯電器を用いた導電ブラシ帯
電方式を示す斜視図、
第4図は第3図の導電ブラシ帯電器の構造を示す断面図
、
第5図は従来の導電ブラシ帯電器の他の例を示す断面図
で、
図中、
■は被帯電体(感光ドラム)、
10は導電ブラシ帯電器、
11は導電性基板、
12は導電性繊維、
13は導電ブラシである。
第1図
第2図Fig. 1 is an explanatory diagram of the structure and arrangement of a conductive brush charger according to an embodiment of the present invention. Fig. 2 is an explanatory diagram of the procedure for weaving conductive fibers according to an embodiment of the present invention. Fig. 3 is a conventional conductive brush charger. FIG. 4 is a cross-sectional view showing the structure of the conductive brush charger shown in FIG. 3; FIG. 5 is a cross-sectional view showing another example of the conventional conductive brush charger. In the figure, (2) is a charged body (photosensitive drum), 10 is a conductive brush charger, 11 is a conductive substrate, 12 is a conductive fiber, and 13 is a conductive brush. Figure 1 Figure 2
Claims (1)
プロセスにおける被帯電体(1)の帯電用に使用される
導電ブラシ帯電器において、前記導電性繊維(12)を
、前記被帯電体(1)の移動方向とほぼ直角方向にルー
プを形成するように植毛したことを特徴とする導電ブラ
シ帯電器。In a conductive brush charger formed by flocking conductive fibers (12) and used for charging a charged object (1) in an electrophotographic recording process, the conductive fibers (12) are used to charge a charged object (1). (1) A conductive brush charger characterized in that the bristles are flocked to form a loop in a direction substantially perpendicular to the direction of movement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21256788A JPH0262563A (en) | 1988-08-29 | 1988-08-29 | Conductive brush electrostatic charger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21256788A JPH0262563A (en) | 1988-08-29 | 1988-08-29 | Conductive brush electrostatic charger |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0262563A true JPH0262563A (en) | 1990-03-02 |
Family
ID=16624838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21256788A Pending JPH0262563A (en) | 1988-08-29 | 1988-08-29 | Conductive brush electrostatic charger |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0262563A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5398102A (en) * | 1992-04-21 | 1995-03-14 | Sharp Kabushiki Kaisha | Electrophotographic copier and charging means used therefor |
-
1988
- 1988-08-29 JP JP21256788A patent/JPH0262563A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5398102A (en) * | 1992-04-21 | 1995-03-14 | Sharp Kabushiki Kaisha | Electrophotographic copier and charging means used therefor |
EP0775945A2 (en) | 1992-04-21 | 1997-05-28 | Sharp Kabushiki Kaisha | Electrophotographic copier and charging means used therefor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4932438B2 (en) | Brush roller and manufacturing method thereof | |
JP3233509B2 (en) | Static elimination brush | |
JP2856506B2 (en) | Recording device | |
JPH0262563A (en) | Conductive brush electrostatic charger | |
US6909868B2 (en) | Brush charger for static-charging a photosensitive member and image forming apparatus | |
JP2922339B2 (en) | Manufacturing method of brush for image forming device | |
JPS58173510A (en) | Cleaning brush | |
JPH06289759A (en) | Cleaning device for image forming device | |
JP3665433B2 (en) | Supply roller and developing device | |
JPH10309760A (en) | Manufacture of fur brush roller | |
JPS58199365A (en) | Conductive brush device | |
JPH06282149A (en) | Brush electrifying device and its production | |
JP3399933B2 (en) | Brush charging device | |
JP3250701B2 (en) | Contact charging device | |
JPS60150064A (en) | Electrically conductive brush of copying machine | |
JP2000214656A (en) | Image forming device and electrostatic charging device | |
JPH06295117A (en) | Image forming device | |
JP3224576B2 (en) | Charging device | |
JPH10111597A (en) | Brush for fur brush developing roller | |
JP2000098755A (en) | Electrophotographic device | |
JPS59116776A (en) | Fur brush cleaning device | |
JPH10108735A (en) | Production of fur rush developing roller | |
JPH05100545A (en) | Electrifying method and device | |
JPS60205551A (en) | Electrifying device | |
JPH07281504A (en) | Brush type electrostatic charger for electrophotographing device |