JPH04156480A - Corona discharger - Google Patents
Corona dischargerInfo
- Publication number
- JPH04156480A JPH04156480A JP28097190A JP28097190A JPH04156480A JP H04156480 A JPH04156480 A JP H04156480A JP 28097190 A JP28097190 A JP 28097190A JP 28097190 A JP28097190 A JP 28097190A JP H04156480 A JPH04156480 A JP H04156480A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- thin metal
- fine wire
- metallic fine
- metal wire
- 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
- 239000002184 metal Substances 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 206010041662 Splinter Diseases 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、複写機等の電子写真式の画像形成装置に用い
られるコロナ放電器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a corona discharger used in an electrophotographic image forming apparatus such as a copying machine.
従来のコロナ放電器としては、例えば第３図に示すよう
なものかある。同図において、符号１は放電線であり、
この放電線］は、箱状のシール部＋４３の内部に収納さ
れて張設されている。シール部材３の両端部には、それ
ぞれ絶縁ブロック・１゜５が嵌合して設けられており、
これらの絶縁ブロック４，５内にはそれぞれ、停止部６
．７が一体的に形成されている。As a conventional corona discharger, there is one shown in FIG. 3, for example. In the figure, numeral 1 is a discharge line,
This discharge wire] is housed inside a box-shaped seal portion +43 and stretched. Insulating blocks 1°5 are fitted to both ends of the seal member 3, respectively.
A stop portion 6 is provided in each of these insulating blocks 4 and 5.
．． 7 is integrally formed.
第４図に示すように、これらの係止部６．７間には放電
線１が設けられており、この放電線１の一端部と係止部
６との間には、コイルスプリンタ２が介装されて連結し
ている。また、放電線１の一端部には環状の連結部材８
か設Ｇｌられ、放電線１はこの連結部材８を介してコイ
ルスプリング２と連結している。As shown in FIG. 4, a discharge wire 1 is provided between these locking portions 6 and 7, and a coil splinter 2 is provided between one end of this discharge wire 1 and the locking portion 6. They are interposed and connected. Further, an annular connecting member 8 is provided at one end of the discharge wire 1.
The discharge wire 1 is connected to the coil spring 2 via the connecting member 8.
第５図に示すように、放電線１の一端部はまず連結部４
’４’ ８の秋込み部８ルが開いた状態てその中心部に
配置され（同図（＝ｉ ）力々［１＜）、次に秋込み部
８ａを折り曲げて閉し２る、−とにより放電線１を挟込
み（同図（ｂ）の々１．１＜）、ｉ後に放″喝線１と挟
込み部８ａを溶接ｑ９により固定している４〔発明が解
決しようとする課題〕
一方電了写真式の画像形成装置等においては、その装置
本体内に常時１〜ナー、塵芥等の汚染物か浮遊している
、これらグ） ’ｌ′Ｆ倣物は、画面形成を長時間作動
させるとコロナ放電器の放電線にｆ＝Ｉ着する。こめ１
ζ１着汚染物のために、放電効率ジ）低下や放電ムラが
生じて画質の低下を招くことがある。As shown in FIG. 5, one end of the discharge wire 1 is first connected to the connecting portion 4.
'4' The fall part 8a of 8 is opened and placed in the center (see figure (=i)) with force [1<), then the fall part 8a is folded and closed, - The discharge wire 1 is sandwiched by (1.1 < in the same figure (b)), and after i, the discharge wire 1 and the sandwiched part 8a are fixed by welding q9. [Problem] On the other hand, in electronic photo-type image forming apparatuses, there are always contaminants such as particles, dust, etc. floating in the main body of the apparatus. If it is operated for a long time, f = I will be attached to the discharge wire of the corona discharger.
Due to the ζ1 contaminants, a decrease in discharge efficiency and uneven discharge may occur, leading to a decrease in image quality.
このなめ、数十枚の画像形成毎にクリーナＡにより清掃
が必要となるか、コロナ放電器の放電線は数１０μｉｎ
の直径の金属刊１線て措成されているため、清掻の際に
−１１のはずみてその放電線を［υｉ線してしまうこと
が非常に多い。Due to this slick, cleaning with Cleaner A is required every time several dozen images are formed, or the discharge wire of the corona discharger is several tens of μin thick.
Since the discharge wire is made of one metal wire with a diameter of , it is very common for the discharge wire to become a [υi wire] due to the momentum of -11 when cleaning.
これ乙」、手記従来のコ１７す放電器のように、放電線
１め端部が、部材８に挟込まれて固定される′！ｔ４造
になっているなめ、その挟込み固定時に、連結部材８の
加工時に生じた剪断面のエツジに細線が触れて傷が発生
したり、或は連結部材８）＼の放ＥＮ線１の固定時に挟
込み部８ａにより放電線１を強く圧縮しすぎて放電線１
をつぶしたりして、放電線１を断線し易・＜シてしまう
ためであり 清１ｉ−ｉｆ時にはそのような傷やつぶれ
た箇所に応力が集中し、て、断線し易くなるためである
。Note: Like a conventional discharger, the first end of the discharge wire is sandwiched between the members 8 and fixed. When the T4 structure is clamped and fixed, the thin wire may come into contact with the edge of the sheared surface generated during processing of the connecting member 8, causing scratches, or damage may occur to the emitted wire 1 of the connecting member 8). The discharge wire 1 may be compressed too strongly by the pinching portion 8a during fixation, and the discharge wire 1 may be
This is because the discharge wire 1 is easily broken due to crushing of the discharge wire 1. When the discharge wire 1 is damaged or crushed, stress is concentrated on such scratched or crushed portions, and the wire is likely to be broken.
そこて本発明は、このような［ｕ１題点を解決すること
を課題としている。Therefore, it is an object of the present invention to solve the [u1 problem].
−１−記課題を解決するなめに本考案は、箱状のシール
部材と、このシール部材の内側両端部に設いられ／と２
つの係止部と、これら停止部の間に設Ｑ′フられて前記
シール部利内に張設される金属細線と、この金属細線の
少くとも一方の端部と前記係１１７部との間に介装され
る弾性部材とを（ｉｔｉｉえなコロナ放電器において、
前記金属細線の端部を前記弾性部材の円形断面の端部に
直接係１［′、させたことを楢成としたものである。In order to solve the problems mentioned above, the present invention includes a box-shaped sealing member, and a box-shaped sealing member provided at both inner ends of the sealing member.
A thin metal wire Q' is provided between these stop portions and stretched within the sealing portion, and between at least one end of this thin metal wire and the locking portion 117. In the corona discharger, an elastic member interposed in the
The end of the thin metal wire is directly connected to the end of the circular cross-section of the elastic member to form a shield.
こめような桿１成の：Ｚロナ放電器によれは、箱状のシ
ール部材内に張設される金属細線の端部を、弾性部、（
ｑの円形断１Ｔｉｉの端部に直接係止させることにより
、弾ＪＩ４一部材とａ）停止部が滑らかになり、従来の
連結部材の剪断面のエツジ等により金属細線に傷がつい
たり、金属細線をつぶしすき“たりすることを防止して
、倉属細線グ） １Ｅｌｉ線率を低１り゛させることが
てきる。In the case of a Z-rona discharger, the end of the thin metal wire stretched inside the box-shaped sealing member is connected to the elastic part, (
By directly locking the end of the circular cut 1Tii of q, the bullet JI41 member and a) stop part become smooth, and the thin metal wire is not scratched by the edges of the sheared surface of the conventional connecting member, and the metal By preventing thin wires from being crushed, it is possible to lower the line rate of thin wires.
以下、本発明の実施例について［］ｍｊに基づいて説明
する。第１図および第２図（ａ、）（ｂ）は、本発明に
よるコ１′７す放電器の一実施例を示す図である。従来
と同一の部品には同一の符号を付して説明する。Examples of the present invention will be described below based on []mj. 1 and 2(a) and 2(b) are diagrams showing an embodiment of a discharge device according to the present invention. Components that are the same as those of the prior art will be described with the same reference numerals.
第１図において、符号１は材質がタングステンにより形
成された金属細線（放電線）てあり、この金属細線１は
、箱状のシール部材３の内部に収納されて張設される。In FIG. 1, reference numeral 1 denotes a thin metal wire (discharge wire) made of tungsten, and the thin metal wire 1 is housed inside a box-shaped sealing member 3 and stretched.
シール部材３の両端部にはそれぞれ絶縁ブロック・１．
５が嵌合して設けられており、これらの絶縁プロ・ツク
４，５内にはそれ、−ｑ −、、、、、−
ぞれ係廿部６，７が一体的に形成されている。これらの
係止部６，７の間には金属細線１が設りられており、こ
の金属細線１の一端部と係止部６との間には、材質がリ
ン青銅等の銅系金属により形成された、円形断面を有す
るコイルスプリング１０が介装されている。Insulating blocks 1. are provided at both ends of the sealing member 3, respectively.
5 are provided in a fitted manner, and engagement portions 6, 7 are integrally formed within these insulation blocks 4, 5, respectively. . A thin metal wire 1 is provided between these locking portions 6 and 7, and between one end of this thin metal wire 1 and the locking portion 6, the material is made of a copper-based metal such as phosphor bronze. A coil spring 10 having a circular cross section is interposed.
第２図（ａ、 ）に示すように、金属細線１の端部は先
ず、コイルスプリング１０の端部の開状態の侠込み部１
．０ ａに折曲げられて係ｔｌｒ、され、次に同図（１
））に示すように、挟込み部１．０ ａをつぶして金属
細線１の一端部を挟込んて、溶接等により金属細線１は
コイルスプリング１０に固定されて、シール部材３内に
張設さｉ′シるようになっている。As shown in FIG. 2 (a,
．． It is folded to 0 a and connected to tlr, and then the same figure (1
) As shown in FIG. It's starting to look like this.
このように金属細線１の端部は、金属細線１より硬くな
い材質で形成されるとともに円形断面を有する、コイル
スプリング１０の端部の挟込み部１− Ｏａに直招係止
されて連結されている。ブロック４．５は、コロナ放電
器の組立後にＭ１２゜１３により閉止される。In this way, the end of the thin metal wire 1 is directly engaged and connected to the clamping portion 1-Oa at the end of the coil spring 10, which is made of a material less hard than the thin metal wire 1 and has a circular cross section. ing. Block 4.5 is closed by M12°13 after assembly of the corona discharger.
このようなコロナ放電器は、ブロック４，５を複写機等
の装置本体σ）フトームに力り無く装着することにより
取ｆりＩ ｉ−）られ、作動時には金属細線１に数Ｋ
ｖの直流又は交流σ）電圧を印加することにより放電作
用を行うようにな−）でいる。Such a corona discharger is removed by attaching the blocks 4 and 5 to the main body of a copying machine etc. without any force, and when in operation, a few kilograms are applied to the thin metal wire 1.
By applying a direct current or alternating current σ) voltage of v, a discharge action is performed.
以上説明したように本発明によれば、金属細線の端部を
、弾・姓部材の円形断面の端部に直接係止させることに
より、弾性部材との係止部が滑らかになり、従来の連結
部材の剪断面のエツジＴにより金属６１１１線に色）が
ついｌコリ、歌属細線をつぶしすぎなりする、−とを防
１１−シて、金属細線の断線率を低下させる、二とがて
さる、このノごめ、トナー、塵芥等の汚染浮遊物がコロ
ナ放電器め放電線にイ・１着して、この１〈１−着汚染
物をクリーナ等により清掃する際においても、その放電
線を断線してしまうことをより確実に防止することがて
きる。As explained above, according to the present invention, by directly locking the end of the thin metal wire to the end of the circular cross section of the bullet/band member, the locking part with the elastic member becomes smoother than the conventional one. The edge T of the sheared surface of the connecting member prevents the metal 6111 wire from becoming colored, causing stiffness, and crushing the thin metal wire too much, and reducing the breakage rate of the thin metal wire. However, when contaminated floating substances such as dust, toner, and dust adhere to the discharge wire of the corona discharger, even when cleaning these contaminated substances with a cleaner etc. Breaking of the discharge wire can be more reliably prevented.
また前記実施例によれば、コイルスプリング１０は金属
細線１よりも硬くない材質により構成されているため、
さらにその効果を高めることがてきる。Furthermore, according to the embodiment, the coil spring 10 is made of a material that is less hard than the thin metal wire 1;
The effect can be further enhanced.
さらに、従来の連結部材８のような部品が不要となるの
で、作業効率が向−Ｊｒ−シ、てコス１−の低減をも図
ることができる。Furthermore, since parts such as the conventional connecting member 8 are not required, work efficiency can be improved and labor costs can be reduced.
第１図および第２図（ａ）、（ｂ）は本発明によるコロ
ナ放電器の一実施例を示す図であり、第１図はその一部
破断斜視図、第２図（ａ）、（ｂ）はそれぞれ金属細線
をコイルスプリンタに係１１する作業手順を示す斜視図
、第３図ないし第５図（ａ、）、（ｂ）は従来のコロナ
放電器を示す図であり、第３図はその一部破断斜視図、
第４図は金属細線の張設状態を示す斜視図、第５図（ａ
）。
（ｂ ）はそれぞれ金属細線め端部を固定する作業手順
を示す斜視図である。
１・・・・・・金属細線（放電線）
３・・・・・・シール部材
１０・・・・・・コイルスプリング（弾性部材）特許出
願人 株式会社 リ コ −FIGS. 1, 2(a) and 2(b) are diagrams showing one embodiment of the corona discharger according to the present invention, FIG. 1 being a partially cutaway perspective view thereof, and FIGS. b) is a perspective view showing the working procedure for attaching a thin metal wire to a coil splinter, and FIGS. 3 to 5 (a,) and (b) are views showing a conventional corona discharger, and FIG. is a partially cutaway perspective view,
Figure 4 is a perspective view showing the state in which the thin metal wire is stretched, and Figure 5 (a
). (b) is a perspective view showing the working procedure for fixing the ends of the thin metal wires. 1... Thin metal wire (discharge wire) 3... Seal member 10... Coil spring (elastic member) Patent applicant Rico Co., Ltd. −
Claims (2)
部に設けられた２つの係止部と、これら係止部の間に設
けられて前記シール部材内に張設される金属細線と、こ
の金属細線の少くとも一方の端部と前記係止部との間に
介装される弾性部材とを備えたコロナ放電器において、
前記金属細線の端部を前記弾性部材の円形断面の端部に
直接係止させたことを特徴とするコロナ放電器。(1) A box-shaped sealing member, two locking portions provided at both inner ends of the sealing member, and a thin metal wire provided between these locking portions and stretched within the sealing member. , a corona discharger comprising an elastic member interposed between at least one end of the thin metal wire and the locking part,
A corona discharger characterized in that an end of the thin metal wire is directly engaged with an end of the circular cross section of the elastic member.
属細線よりも硬くない材質により構成されることを特徴
とする請求項（１）記載のコロナ放電器。(2) The corona discharger according to claim 1, wherein at least an end portion of the circular cross section of the elastic member is made of a material less hard than the thin metal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28097190A JPH04156480A (en) | 1990-10-19 | 1990-10-19 | Corona discharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28097190A JPH04156480A (en) | 1990-10-19 | 1990-10-19 | Corona discharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04156480A true JPH04156480A (en) | 1992-05-28 |
Family
ID=17632450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28097190A Pending JPH04156480A (en) | 1990-10-19 | 1990-10-19 | Corona discharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04156480A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7463850B2 (en) | 2004-07-26 | 2008-12-09 | Brother Kogyo Kabushiki Kaisha | Charging device for a process cartridge and an image forming apparatus |
-
1990
- 1990-10-19 JP JP28097190A patent/JPH04156480A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7463850B2 (en) | 2004-07-26 | 2008-12-09 | Brother Kogyo Kabushiki Kaisha | Charging device for a process cartridge and an image forming apparatus |
| US7813677B2 (en) | 2004-07-26 | 2010-10-12 | Brother Kogyo Kabushiki Kaisha | Process cartridge having charging device with conductive grid electrode |
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