JPH0423785B2 - - Google Patents
Info
- Publication number
- JPH0423785B2 JPH0423785B2 JP13549582A JP13549582A JPH0423785B2 JP H0423785 B2 JPH0423785 B2 JP H0423785B2 JP 13549582 A JP13549582 A JP 13549582A JP 13549582 A JP13549582 A JP 13549582A JP H0423785 B2 JPH0423785 B2 JP H0423785B2
- Authority
- JP
- Japan
- Prior art keywords
- metal foil
- toner
- corona discharger
- corona
- foil member
- 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
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 239000011888 foil Substances 0.000 description 22
- 229910052751 metal Inorganic materials 0.000 description 20
- 239000002184 metal Substances 0.000 description 20
- 239000000126 substance Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0258—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices provided with means for the maintenance of the charging apparatus, e.g. cleaning devices, ozone removing devices G03G15/0225, G03G15/0291 takes precedence
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
Description
【発明の詳細な説明】
本発明は、コロナ放電に係り、詳しくは、像担
持体上にトナー像を形成する画像形成装置等にて
有効に利用出来るコロナ放電器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to corona discharge, and more particularly to a corona discharge device that can be effectively used in image forming apparatuses that form toner images on image carriers.
以下、具体例により図面を参照しつつ説明す
る。第１図は従来例によるコロナ放電器の斜視図
であり、１はハウジング、２は放電ワイヤ、３は
プラグ、４はワイヤに引張力をかけるスプリン
グ、５は取手、６はプラグ３と導通するフツクで
ある。図中プラグ３は本体部のコンセント（図示
せず）に接触しており、上記コンセントに高電圧
がかかつた時にワイヤ２にコロナ放電が発生する
様に構成されている。 Hereinafter, specific examples will be explained with reference to the drawings. FIG. 1 is a perspective view of a conventional corona discharger, in which 1 is a housing, 2 is a discharge wire, 3 is a plug, 4 is a spring that applies a tensile force to the wire, 5 is a handle, and 6 is electrically connected to the plug 3. It's futsuku. In the figure, the plug 3 is in contact with an outlet (not shown) in the main body, and is configured so that corona discharge occurs in the wire 2 when a high voltage is applied to the outlet.
ハウジング１は第２図に示すようにコ字形をし
ておりコロナ放電の方向（第２図中矢印Ａ）及び
幅（第２図中Ｂ）を規制している。 As shown in FIG. 2, the housing 1 is U-shaped and regulates the direction (arrow A in FIG. 2) and width (B in FIG. 2) of corona discharge.
従来例のコロナ放電器は上述のような構成で、
このハウジング１の内壁にトナー付着が不可避で
あつた。そして上述のトナー等の物質がハウジン
グ１の内側に多量に付着してくると放電ムラ等が
発生し複写画像にスジ状の像が現れ画像を見苦し
いものにしてしまう。このため、コロナ放電器の
清掃はある複写枚数毎に行なわなければならな
い。このハウジング１の内側に付着したトナー等
の付着物質を除去するときには、コロナ放電器を
画像形成装置本体から取り出して清掃しなければ
ならない。また、その作業はワイヤ２を切らない
様に注意して行なわなければならないため清掃作
業者に相当の負担を強いるものである。この様
に、コロナ放電器のハウジング内の付着物質の発
生は、画像形成装置をメインテナンスフリーとす
る上での一つの障害となつている。 The conventional corona discharger has the above-mentioned configuration,
Toner adhesion to the inner wall of the housing 1 was unavoidable. If a large amount of the above-mentioned toner or other substance adheres to the inside of the housing 1, uneven discharge or the like will occur, and a streak-like image will appear on the copied image, making the image unsightly. For this reason, the corona discharger must be cleaned every time a certain number of copies are made. When removing adhered substances such as toner that have adhered to the inside of the housing 1, the corona discharger must be removed from the image forming apparatus main body and cleaned. Further, this work must be done with care so as not to cut the wire 2, which imposes a considerable burden on the cleaning worker. As described above, the occurrence of deposits within the housing of the corona discharger is one of the obstacles to making the image forming apparatus maintenance-free.
本発明は、上述の点に鑑み成されたものであ
る。以下、本発明の詳細を、具体例により図面を
参照しつつ説明する。 The present invention has been made in view of the above points. Hereinafter, details of the present invention will be explained using specific examples with reference to the drawings.
第３図は、本発明に基く具体例コロナ放電器の
平面図、第４図は同Ｚ−Ｚでの断面図である。 FIG. 3 is a plan view of a specific example of a corona discharger according to the present invention, and FIG. 4 is a sectional view taken along the Z-Z line.
前述従来例装置と共通部材は同一番号で示し
た。第３図中、１８はトナー吸着部として設けら
れた金属箔部材（例えばアルミ箔、ステンレス箔
など）である。金属箔部材１８は一方を駆動コロ
８、他方を従動コロ１４に掛けられて保持され
る。即ち、金属箔部材はコロナ放電ワイヤーを囲
むように前記コロナ放電ワイヤーに沿つて延びる
ように設けられた無端移動可能となつている。そ
して駆動コロ８に連結するモーター７の回転によ
つて駆動コロ８が矢印方向に回転した時、金属箔
部材１８は矢印方向へ回動する様に構成されてい
る。また、従動コロ１４は支持板１６上に回転自
在に軸支される。そして支持板１６には図示のよ
うにバネ１５，１７が取り付けられ金属箔部材１
８の長手方向にわたつて一定の張力が作用する。
これにより金属箔部材１８がたるむのを防いでい
る。図中１０，１１，１２，１３は金属箔部材１
８の内側のコロナ放電ワイヤーに対向する面を清
掃するクリーナーであり、１１，１３にクリーニ
ング部材、１０，１２はその支持部材である。モ
ーター７はプラグ９によつて電力を得る。プラグ
９はコロナ放電器が画像形成装置本体に組み込ま
れた時本体側のコンセント（図示せず）に接触す
る様構成されている。また２５はコロナ放電器の
ハウジングである。 Components common to the conventional device described above are designated by the same numbers. In FIG. 3, 18 is a metal foil member (for example, aluminum foil, stainless steel foil, etc.) provided as a toner adsorption section. The metal foil member 18 is held by the driving roller 8 on one side and the driven roller 14 on the other side. That is, the metal foil member is provided so as to extend along the corona discharge wire so as to surround the corona discharge wire, and is movable endlessly. When the drive roller 8 rotates in the direction of the arrow due to the rotation of the motor 7 connected to the drive roller 8, the metal foil member 18 is configured to rotate in the direction of the arrow. Further, the driven roller 14 is rotatably supported on a support plate 16. Springs 15 and 17 are attached to the support plate 16 as shown in the figure, and the metal foil member 1
A constant tension is applied over the longitudinal direction of 8.
This prevents the metal foil member 18 from sagging. In the figure, 10, 11, 12, 13 are metal foil members 1
8 is a cleaner for cleaning the inner surface facing the corona discharge wire, 11 and 13 are cleaning members, and 10 and 12 are supporting members thereof. Motor 7 receives power via plug 9. The plug 9 is configured to come into contact with an outlet (not shown) on the main body side when the corona discharger is assembled into the main body of the image forming apparatus. Further, 25 is a housing of a corona discharger.
画像形成装置本体に組み込まれた上記コロナ放
電器に於て、モーター７の回転で金属箔部材１８
は矢印方向へ回動する。こうして金属箔部材１８
に浮遊トナーが吸着される。前述のように、金属
箔部材１８の内側の面にはクリーニング部材１
１，１３が接触しているため、金属箔部材１８の
内側に付着したトナー等の物質はかき取られ、金
属箔部材１８の内側の面は常にきれいな状態を保
持し吸着効果を常に発揮することができる。 In the corona discharger built into the main body of the image forming apparatus, the metal foil member 18 is rotated by the rotation of the motor 7.
rotates in the direction of the arrow. In this way, the metal foil member 18
floating toner is absorbed. As mentioned above, the cleaning member 1 is provided on the inner surface of the metal foil member 18.
1 and 13 are in contact with each other, substances such as toner adhering to the inside of the metal foil member 18 are scraped off, and the inside surface of the metal foil member 18 is always kept clean and the adsorption effect is always exhibited. I can do it.
このモーター７の回転数（rpm）は、金属箔部
材１８を清掃する上で最も効率の良い回転数を選
べば良い。また、駆動コロ８、従動頃１４の外径
を適当に選ぶことによりコロナ放電において最も
効率の良い放電幅（第４図中Ｃ）を用いることが
できる。 The rotational speed (rpm) of this motor 7 may be selected to be the most efficient rotational speed for cleaning the metal foil member 18. Furthermore, by appropriately selecting the outer diameters of the driving roller 8 and the driven roller 14, the most efficient discharge width (C in FIG. 4) can be used in corona discharge.
放電ワイヤを張架するフツク６′は基板ブロツ
ク６０上に固定されている。第３図Ｙ−Ｙでの部
分断面図である第５図に示すような経路でフツク
６′は、プラグ３と導通する様構成されている。
この様に３次元的に導通経路を形成することによ
つて、モーター７や駆動コロ８は最も適当な所に
配置することができる。 A hook 6' for tensioning the discharge wire is fixed on the substrate block 60. The hook 6' is configured to be electrically connected to the plug 3 through a path as shown in FIG. 5, which is a partial sectional view taken along line Y--Y in FIG.
By forming the conductive path three-dimensionally in this way, the motor 7 and the drive roller 8 can be placed at the most appropriate location.
第６図は、本発明に基く変形例コロナ放電器の
平面図である。 FIG. 6 is a plan view of a modified corona discharger according to the present invention.
第６図中２３は駆動コロでありハンドル２４に
よつて回転する様構成されている。２２は従動コ
ロ、２１は支持板、１９，２０はスプリングであ
る。これら部材により第３図で説明した場合と同
様に金属箔部材１８には一定の引張力がかけられ
ている。また、第３図例と同様金属箔部材の内側
の面をクリーニングするクリーナー部材１１，１
３及びその支持部材１０，１２が付けられてお
り、ハンドル２４によつて駆動コロ２３が矢印方
向に回転した場合、金属箔部材１８は矢印方向に
回動し金属箔部材１８の内側の面に接触している
クリーニング部材１１，１３によつて金属箔部材
上のトナー等の物質が除去される様に構成されて
いる。また、第３図による前述実施例の如くコロ
ナ放電器自体にモーターを設けモーターによつて
駆動コロ８を駆動する外、例えば画像形成装置本
体側の駆動をギヤ等の手段によつて伝達し、駆動
コロ８を駆動しても同様の効果が得られる。 Reference numeral 23 in FIG. 6 is a driving roller, which is configured to be rotated by a handle 24. 22 is a driven roller, 21 is a support plate, and 19 and 20 are springs. A constant tensile force is applied to the metal foil member 18 by these members as in the case explained in FIG. 3. Also, cleaner members 11, 1 for cleaning the inner surface of the metal foil member are provided as in the example shown in FIG.
3 and its supporting members 10 and 12 are attached, and when the drive roller 23 is rotated in the direction of the arrow by the handle 24, the metal foil member 18 is rotated in the direction of the arrow and the inner surface of the metal foil member 18 is rotated. The cleaning members 11 and 13 that are in contact with each other are configured to remove substances such as toner on the metal foil member. Further, in addition to providing a motor in the corona discharger itself and driving the drive roller 8 by the motor as in the embodiment shown in FIG. A similar effect can be obtained by driving the drive roller 8.
また、上述各実施例では金属箔部材をコロナ放
電器に取付けた構成としたが、例えば第３図に示
す様な金属箔部材及びその駆動部、支持部、クリ
ーナー部を１組づつ対向させれ平行に本体内に構
成し、その間にワイヤとそれを支持する部材を出
入れ自在に置く様構成しても良い。 Further, in each of the above embodiments, the metal foil member is attached to the corona discharger, but for example, as shown in FIG. They may be constructed in parallel within the main body, and the wire and the member supporting it may be placed between them so as to be freely accessible.
また、本発明ではトナー吸着部として金属箔部
材の外ポリエステルフイルム等樹脂性フイルムで
も良い。ワイヤーにかかる電圧の条件によつて適
宜材料を選択することで、いずれも十分効果を発
揮することはもちろんである。 Further, in the present invention, a resin film such as a polyester film may be used as the toner adsorption portion in addition to the metal foil member. Of course, any material can be sufficiently effective by appropriately selecting the material depending on the conditions of the voltage applied to the wire.
以上、具体例により詳述した如く、本発明はハ
ウジング内に放電ワイヤーを張架したコロナ放電
器に於て、ハウジング内にトナー吸着部を具備す
るトナー吸着手段を配置構成したことを特徴とす
る。 As described above in detail using specific examples, the present invention is characterized in that, in a corona discharger in which a discharge wire is stretched in a housing, a toner adsorption means having a toner adsorption section is arranged in the housing. .
本発明コロナ放電器は、トナーが浮遊しハウジ
ング内に付着し易い状態で使用してもトナー吸着
手段でトナーを吸着し他の部材に付着することを
防止する優れたものである。 The corona discharger of the present invention is excellent in that even when the toner is used in a state where the toner is likely to float and adhere to the inside of the housing, the toner adsorbing means adsorbs the toner and prevents the toner from adhering to other members.
それ故、本発明コロナ放電器を適用した画像形
成装置では長期間多数の画像形成を行つても良好
な画質を維持することが出来る。 Therefore, the image forming apparatus to which the corona discharger of the present invention is applied can maintain good image quality even when a large number of images are formed for a long period of time.
第１図は、従来例コロナ放電器の斜視図、第２
図は、同断面図、第３図は、本発明に基く具体例
コロナ放電器の平面図、第４図は、同第３図Ｚ−
Ｚでの断面図、第５図は、第３図Ｙ−Ｙでの部分
断面図、第６図は、本発明に基く変形例コロナ放
電器の平面図
図中、１……ハウジング、２……放電ワイヤ、
３……プラグ、４……スプリング。
Figure 1 is a perspective view of a conventional corona discharger, and Figure 2 is a perspective view of a conventional corona discharger.
3 is a plan view of a corona discharger according to a specific example of the present invention, and FIG. 4 is a sectional view of the corona discharger according to the present invention.
5 is a partial sectional view taken along YY in FIG. 3, and FIG. 6 is a plan view of a modified corona discharger according to the present invention. In the figures, 1...housing, 2... ...discharge wire,
3...Plug, 4...Spring.
Claims (1)
るコロナ放電器において、 前記ハウジング内に、前記コロナ放電ワイヤー
を囲むように前記コロナ放電ワイヤーに沿つて延
びるように設けられ無端移動可能なトナー吸着部
と、このトナー吸着部の前記コロナ放電ワイヤー
に対向する面をクリーニングするクリーニング部
材と、を具備するトナー吸着手段を有することを
特徴とするコロナ放電器。[Scope of Claims] 1. A corona discharger having a corona discharge wire and a housing, which is provided in the housing to extend along the corona discharge wire so as to surround the corona discharge wire, and is movable endlessly. 1. A corona discharger comprising a toner adsorption means comprising a toner adsorption section and a cleaning member that cleans a surface of the toner adsorption section facing the corona discharge wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13549582A JPS5924863A (en) | 1982-08-03 | 1982-08-03 | Corona discharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13549582A JPS5924863A (en) | 1982-08-03 | 1982-08-03 | Corona discharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5924863A JPS5924863A (en) | 1984-02-08 |
| JPH0423785B2 true JPH0423785B2 (en) | 1992-04-23 |
Family
ID=15153069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13549582A Granted JPS5924863A (en) | 1982-08-03 | 1982-08-03 | Corona discharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5924863A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186162U (en) * | 1986-05-16 | 1987-11-26 |
-
1982
- 1982-08-03 JP JP13549582A patent/JPS5924863A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5924863A (en) | 1984-02-08 |
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