JPS59228679A - Corona discharging device - Google Patents
Corona discharging deviceInfo
- Publication number
- JPS59228679A JPS59228679A JP10385583A JP10385583A JPS59228679A JP S59228679 A JPS59228679 A JP S59228679A JP 10385583 A JP10385583 A JP 10385583A JP 10385583 A JP10385583 A JP 10385583A JP S59228679 A JPS59228679 A JP S59228679A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- corona discharge
- value
- high voltage
- discharge
- 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
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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はコロナ放電装置、例えば電子写真複写機等に適
用して感光体表面を一様に帯電しあるいは除電するため
に利用するコロナ放電装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a corona discharge device, for example, a corona discharge device used in an electrophotographic copying machine or the like to uniformly charge or eliminate static electricity on the surface of a photoreceptor.
従来、この種のコロナ放電装置としては、高圧電源に接
続された放電線と該放電線を囲むシールド板で構成され
たコロトロン装置もしくはコロトロン装置に放電電流制
御部材（以下、グリッドと称す）を設けたスコロトロン
が知られている。Conventionally, this type of corona discharge device is a corotron device consisting of a discharge wire connected to a high-voltage power source and a shield plate surrounding the discharge wire, or a corotron device provided with a discharge current control member (hereinafter referred to as a grid). The scorotron is known.
これらの装置は高圧印加によるコロナ放電であるために
、その集塵作用は避けがたく放電線、グリッド線、シー
ルド板等に異物の付着すなわち現像剤、放電による酸化
物、空気中の塵埃等による汚れが発生しやすく、従って
、帯電・除電特性にムラを生ずる欠点があった。このた
め、帯電特性を安定に維持させるためには一定期間での
清掃作業が必要とされ、電子写真複写機等において不都
合を生じていた。Since these devices use corona discharge by applying high voltage, their dust collection effect is unavoidable and may cause foreign matter to adhere to discharge lines, grid lines, shield plates, etc., such as developer, oxides from discharge, dust in the air, etc. It has the disadvantage that dirt is likely to occur, resulting in uneven charging and neutralizing characteristics. Therefore, in order to maintain stable charging characteristics, cleaning work is required at regular intervals, which causes inconvenience in electrophotographic copying machines and the like.
本発明は上記に鑑み提案されたもので、定期的な清掃作
業を必要とすることなく、安定な放電特性が長期間維持
される耐久性に優れたコロナ放電装置を得ることを目的
とする。The present invention was proposed in view of the above, and an object of the present invention is to obtain a corona discharge device with excellent durability that maintains stable discharge characteristics for a long period of time without requiring periodic cleaning work.
第１図は本発明コロナ放電装置を適用する電子写真複写
機の極く概略を示す図である。感光体ｌは矢印の方向に
回転自在に支持されており、この感光体の周囲には該感
光体表面を均一に帯電する帯電器２・ランプ３で照明さ
れた原稿４からの反射光像を上記感光体表面に結像して
潜像を形成する短焦点レンズアレー５、上記潜像を顕画
化する現像器６、上記感光体ｌの回転に同期して給送さ
れる転写材７、感光体上の顕画像を転写材に転写する転
写帯電器８、感光体上の残留トナーを除去するクリーニ
ングブレード９等の電子写真プロセス機器が順次に配設
されている。上記転写材７は不図示の定着器を通って給
送されその表面に転写像が定着される。FIG. 1 is a diagram schematically showing an electrophotographic copying machine to which the corona discharge device of the present invention is applied. A photoreceptor l is supported rotatably in the direction of the arrow, and around the photoreceptor there is a light image reflected from an original 4 illuminated by a charger 2 and a lamp 3 that uniformly charge the surface of the photoreceptor. a short focus lens array 5 that forms a latent image by forming an image on the surface of the photoreceptor; a developer 6 that develops the latent image; a transfer material 7 that is fed in synchronization with the rotation of the photoreceptor l; Electrophotographic process equipment such as a transfer charger 8 that transfers the visible image on the photoreceptor to a transfer material, and a cleaning blade 9 that removes residual toner on the photoreceptor are sequentially arranged. The transfer material 7 is fed through a fixing device (not shown), and the transferred image is fixed on its surface.
第２図は前記帯電器２、転写帯電器８として用いる本発
明コロナ放電装置の実施例を示す縦断面図、第３図はそ
の一部の平面図である。第２・３図において、ｌＯは横
断面コ字形のシールド板、１１はシールド板の両端部に
一体に設けた絶縁支持台で、その−カの絶縁支持台には
超音波振動子１２が他方の絶縁支持台には外部電路接続
用のコネクタ１３が夫々一体に設けられている。１４は
一端を絶縁支持台に固定ピン１５で取付け、絶縁部材１
６を介して上記超音波振動子１２に押しつけられた状態
で他端を上記コネクタ１３に取付けて左右の絶縁支持台
間に張設したコロナ放電線である。振動子は図の矢印方
向に振動し、従って放電線の直径方向（横方向）に振動
がかかる。１７はシールド板１０の開口に面した絶縁支
持台面に取付けた絶縁性樹脂製の蓋である。１８は超音
波振動子１２に接続された発振回路、１９はコネクタ１
３に接続された高圧トランス、２０は発振回路１８およ
び高圧トランス１９を制御する比較制御回路で、アナロ
グ−ディジタル変換器（以下Ａ／Ｄと略記する）２０ａ
−ＣＰＵ２０ｂとからなる。２１は電流検出部２２に流
入する放電電流値を検出する検出回路で該検出回路の出
力を比較制御回路２０に入力する。FIG. 2 is a longitudinal sectional view showing an embodiment of the corona discharge device of the present invention used as the charger 2 and transfer charger 8, and FIG. 3 is a plan view of a portion thereof. In Figures 2 and 3, IO is a shield plate having a U-shaped cross section, 11 is an insulating support stand integrally provided at both ends of the shield plate, and the ultrasonic transducer 12 is mounted on the insulating support stand 11 on the other end of the shield plate. A connector 13 for connecting an external electric circuit is integrally provided on each of the insulating support stands. 14 attaches one end to an insulating support stand with a fixing pin 15, and insulating member 1
The corona discharge wire is stretched between the left and right insulating supports with the other end attached to the connector 13 while being pressed against the ultrasonic vibrator 12 via the wire 6. The vibrator vibrates in the direction of the arrow in the figure, and therefore vibrates in the diametrical direction (lateral direction) of the discharge wire. Reference numeral 17 denotes a lid made of insulating resin attached to the insulating support surface facing the opening of the shield plate 10. 18 is an oscillation circuit connected to the ultrasonic transducer 12, and 19 is a connector 1.
3, a comparison control circuit 20 that controls the oscillation circuit 18 and the high voltage transformer 19, and an analog-digital converter (hereinafter abbreviated as A/D) 20a.
- CPU 20b. Reference numeral 21 denotes a detection circuit that detects the discharge current value flowing into the current detection section 22 , and inputs the output of the detection circuit to the comparison control circuit 20 .
上記電流検出部２２は電気絶縁物製の移動子２３にコロ
ナ放電線１４に対向して設けた導電板である。移動子２
３はワイヤ２４に取付けられており、このワイヤ２４を
懸回したプーリ２５・２５の一方がモータ２６で駆動さ
れることにより、シールド板１０の長穴１０ａに沿って
コロナ放電線１４の長手方向に移動する構成である。The current detection section 22 is a conductive plate provided on a mover 23 made of an electrical insulator so as to face the corona discharge wire 14. Mover 2
3 is attached to a wire 24, and when one of pulleys 25, 25 around which the wire 24 is suspended is driven by a motor 26, the corona discharge wire 14 is moved in the longitudinal direction along the elongated hole 10a of the shield plate 10. This is a configuration that moves to .
上記超音波振動子１２としては例えばチタン酸バリウム
系、ジルコン酸チタン酸鉛（ＰＺＴ）および鉛−ランタ
ン、ジルコン−チタン酸化物混合体（ＰＬＺＴ）および
有機材料等の圧電特性を示す材料などが用いられる。ま
た振動子として一枚板でも良く、又２枚以上の貼合せ板
を用いることも可能である。As the ultrasonic transducer 12, materials exhibiting piezoelectric properties such as barium titanate, lead zirconate titanate (PZT), lead-lanthanum, zircon-titanium oxide mixture (PLZT), and organic materials are used. It will be done. Further, a single plate may be used as the vibrator, or it is also possible to use two or more laminated plates.
発振回路１８は超音波振動子１２に対して交番電界もし
くはそれに近い電界が印加できればよい。超音波振動子
の振動の方向は矢印の横方向（放電線と直角方向）でも
よいが、コロナ放電線１４に振動を伝えられればよいの
で、特にその振動方向は限定されるものではなく、コロ
ナ放電線１４と直角方向、平行方向および斜方向のいず
れでもよい。コロナ放電線の振巾は約数ＩＬｍであり、
その周波数は数１０ＫＨｚが効果的ではあるがこれに限
定されるものではなく、−数ＫＨｚから数ＭＨｚまでの
範囲で使用可能である。The oscillation circuit 18 only needs to be able to apply an alternating electric field or an electric field close to it to the ultrasonic transducer 12. The direction of vibration of the ultrasonic vibrator may be in the horizontal direction of the arrow (direction perpendicular to the discharge line), but the vibration direction is not particularly limited as long as the vibration can be transmitted to the corona discharge line 14. The direction may be perpendicular to, parallel to, or oblique to the discharge line 14. The width of the corona discharge wire is about several ILm,
Although several tens of KHz is effective, the frequency is not limited to this, and can be used in the range from -several KHz to several MHz.
以下、第４図のタイミング図および第５図の制御回路図
について本発明コロナ放電装置の動作を説明する。なお
、第５図中２８は比較制御回路２０からタイミング信号
を受けて前記モータ２６を正逆回転するモータドライバ
ー回路、２９は比較制御回路２０からの指令信号を受け
て感光体駆動モータ３０をドライブするモータドライバ
ー回路である。The operation of the corona discharge device of the present invention will be explained below with reference to the timing diagram of FIG. 4 and the control circuit diagram of FIG. 5. In FIG. 5, 28 is a motor driver circuit that receives a timing signal from the comparison control circuit 20 to rotate the motor 26 in forward and reverse directions, and 29 is a motor driver circuit that receives a command signal from the comparison control circuit 20 and drives the photoreceptor drive motor 30. This is a motor driver circuit.
いま、使用者によりコピー信号が入力されると（第４図
を１点）、感光体ｌは回転を開始し同時に比較制御回路
２０から出力されたタイミング信号Ｓｌでモータ２６の
駆動および高圧トランス１９によるコロナ放電線１４へ
の高電圧印加が行われる。このため、移動子２３に設け
られた電流検出部２２はプーリ２５・２５、ワイヤ２４
を介して駆動され、コロナ放電線１４から発生されたコ
ロナ放電中を該コロナ放電線の一端から他端まで移動し
て停止する。この移動過程で電流検出部２２に流れ込む
放電電流値を検出回路２１で検出し、この検出値をＡ
／ Ｄ ２０ ａに入力し該Ａ７’Ｄの出力をＣＰＵ２
０ｂに供給して放電電流値の最入信および最小値を比較
制御回路２０に記録する。この比較制御回路２０は最大
値Ｈｍａｘと最小値Ｍ＋ｉｉｎの差分が設定値ＩＫ１以
上になったとき、高圧トランス１９に制御信号を供給し
てコロナ放電線１４への高電圧印加を中断する一方発振
回路１８を作動させる。超音波振動子１２は発振回路１
８の発振出力を受けて一定時間矢示方向に伸縮運動し、
この伸縮運動でコロナ放電線１４を振動させて付着異物
を振り落して汚れを除去する。上記の一定時間経過後、
比較制御回路２０から出力された次のタイミング信号Ｓ
２でモータ２６を逆転駆動すると共に高圧トランス１９
によるコロナ放電線１４への高電圧印加を再開する。以
下、上記の動作を繰り返し、コロナ放電線１４の全長に
渡って検出電流値の最大値Ｍｍａｘと最小値Ｍａｉｎの
差分が設定値ＩＫ＋以下になるように、つまりムラの少
ない均一なコロナ放電が得られるようにコロナ放電線を
清掃する。この清掃手順を示すフローチャートを第６図
に示す。Now, when a copy signal is input by the user (point 1 in FIG. 4), the photoreceptor l starts rotating, and at the same time, the timing signal Sl output from the comparison control circuit 20 drives the motor 26 and the high voltage transformer 19. A high voltage is applied to the corona discharge wire 14 by. For this reason, the current detection unit 22 provided in the mover 23
It moves through the corona discharge generated from the corona discharge wire 14 from one end of the corona discharge wire to the other end, and then stops. The detection circuit 21 detects the discharge current value flowing into the current detection unit 22 during this movement process, and this detected value is
/ D 20a and the output of said A7'D is sent to CPU2.
0b, and the most recent and minimum discharge current values are recorded in the comparison control circuit 20. This comparison control circuit 20 supplies a control signal to the high voltage transformer 19 to interrupt high voltage application to the corona discharge wire 14 when the difference between the maximum value Hmax and the minimum value M+iin exceeds a set value IK1. 18 is activated. The ultrasonic transducer 12 is the oscillation circuit 1
In response to the oscillation output of 8, it expands and contracts in the direction of the arrow for a certain period of time,
This expansion and contraction movement vibrates the corona discharge wire 14 to shake off the attached foreign matter and remove dirt. After the above certain period of time has passed,
The next timing signal S output from the comparison control circuit 20
2, the motor 26 is reversely driven and the high voltage transformer 19 is
The high voltage application to the corona discharge wire 14 is resumed. Thereafter, the above operation is repeated so that the difference between the maximum value Mmax and the minimum value Main of the detected current value becomes equal to or less than the set value IK+ over the entire length of the corona discharge wire 14, that is, a uniform corona discharge with less unevenness is obtained. Clean the corona discharge wire so that it is clean. A flowchart showing this cleaning procedure is shown in FIG.
上記コロナ放電線の清掃動作が終了したことを１例えば
比較制御回路２０で検出電流値の最大値Ｍ＋ｉａｘと最
小値にｓｉｎの差分が設定値ＩＫ＋以下になった事を確
認することにより判別し、以後、感光体１は前回転とい
われる前ならし回転・コピー回転および後回転といわれ
る後ならし回転からなる通常のコピー動作に入る。The completion of the cleaning operation of the corona discharge wire is determined by, for example, checking in the comparison control circuit 20 that the difference between the maximum value M+iax and the minimum value sin of the detected current value has become equal to or less than the set value IK+, Thereafter, the photoreceptor 1 enters a normal copying operation consisting of a preliminary rotation and copy rotation called pre-rotation, and a post-conditioning rotation called post-rotation.
超音波振動子による清掃を任意の回数くり返しても、検
出電流値を最大値に■ａＸと最小値Ｎ厘ｉｎの差分が設
定値ＩＫ＋以下にならない時は、任意の回数で清掃を停
止し以後前回転を経てコピー動作に入っても良い。Even if cleaning with the ultrasonic vibrator is repeated an arbitrary number of times, if the detected current value does not reach the maximum value and the difference between a The copy operation may be started after the pre-rotation.
図示例は高圧トランス１９を作動させての電流検出部２
２の駆動時期と超音波振動子１２の駆動時期はタイミン
グを変えであるが、常時超音波振動子１２を振動させて
電流検出部２２の駆動を行い、その検出電流の最大値）
１ｍａｘと最小値Ｍａｉｎの差分が設定値に以下になっ
たとき、超音波振動子１２の駆動を停止させてもよい。The illustrated example shows the current detection unit 2 when the high voltage transformer 19 is activated.
Although the driving timing of 2 and the driving timing of the ultrasonic vibrator 12 are different, the ultrasonic vibrator 12 is constantly vibrated to drive the current detection unit 22, and the maximum value of the detected current)
When the difference between 1max and the minimum value Main becomes less than or equal to a set value, driving of the ultrasonic transducer 12 may be stopped.
また、検出電流の最大値Ｍｍａｘと最小値Ｍａｉｎの差
分によらず該検出電流と予め記憶させである設定値Ｋに
対する偏差が一定値以下になるまで超音波振動子を駆動
させるようにしてもよい。Alternatively, the ultrasonic transducer may be driven regardless of the difference between the maximum value Mmax and the minimum value Main of the detected current until the deviation between the detected current and a preset value K becomes equal to or less than a certain value. .
第２図例はコロナ放電線１４の清掃を感光体の通常のコ
ピー回転前に行っているが、コピー回転後あるいは後回
転後に前記一連の清掃動作を行ってもよい。In the example shown in FIG. 2, the cleaning of the corona discharge wire 14 is performed before the normal copying rotation of the photoreceptor, but the series of cleaning operations described above may be performed after the copying rotation or after the post-rotation.
第７図は他の実施例を示すもので、シールド板１０の内
面にコロナ放電線１４に沿って略等間隔に絶縁板２７を
介して電流検出部２２としての多数の導電板を設け、各
導電板は検出回路２１の入力端に接続されている０本例
の場合も検出回路２１で検出された検出電流の最大値Ｍ
ｍａｘと最小値Ｍｕｉｎが比較制御回路２０に記憶され
、その最大値Ｍ＋ｍａＸと最小値Ｍｌｌｉｎの差分が予
め記憶された設定値ＩＫ＋以上のとき、発振回路１８を
作動させて該発振回路からの発振出力で超音波振動子１
２を駆動し、コロナ放電線１４を振動させて該コロナ放
電線の汚れを除去する。上記差分が設定値に以下のとき
は直ちにコピー動作に入る。第８図は前記第５図と同一
部分に同一符号を付した本実施例の制御回路図、第９図
は本実施例のフローチャートである。FIG. 7 shows another embodiment, in which a large number of conductive plates as current detection parts 22 are provided on the inner surface of the shield plate 10 at approximately equal intervals along the corona discharge wire 14 with insulating plates 27 interposed therebetween. In the case where the conductive plate is connected to the input terminal of the detection circuit 21, the maximum value M of the detection current detected by the detection circuit 21
max and the minimum value Muin are stored in the comparison control circuit 20, and when the difference between the maximum value M+maX and the minimum value Mllin is greater than or equal to a pre-stored set value IK+, the oscillation circuit 18 is activated to generate an oscillation output from the oscillation circuit. Ultrasonic transducer 1
2 to vibrate the corona discharge wire 14 to remove dirt from the corona discharge wire. If the above-mentioned difference is less than the set value, the copy operation starts immediately. FIG. 8 is a control circuit diagram of this embodiment in which the same parts as in FIG. 5 are given the same reference numerals, and FIG. 9 is a flowchart of this embodiment.
尚、超音波振動子を長時間振動させてもコロナ放電線の
汚れが除去されない、つまりコロナ放電電流のムラを除
去できない場合は、一定時間で駆動を止めて異常発生を
報知し、この報知により使用者が人的作業を導入して清
掃してやればよい。If the ultrasonic vibrator is vibrated for a long period of time, but the stains on the corona discharge wire cannot be removed, that is, the unevenness of the corona discharge current cannot be removed, the drive is stopped after a certain period of time and an abnormality is reported. The user can perform manual cleaning for cleaning.
このように、コロナ放電電流ムラを検知し表示すること
により、不具合な放電状態がオペレーターに通報可能に
なり、良質な画像の維持が容易になる。By detecting and displaying corona discharge current unevenness in this manner, it becomes possible to notify the operator of a defective discharge state, and it becomes easier to maintain a high-quality image.
第７図例は電流検出部２２をシールド板内面に設けたが
、コロナ放電線と平行にグリッド線を設けたスコトロン
（不図示）の場合は、このグリッド線と被放電面との間
に電流検出部２２を設けてもよい。電流検出部は設置数
を多くした方がコロナ放電のムラ検出に有効である。ま
た、図示例−と同様にグリッド線に超音波振動子を作用
させて汚れ除去を行うようにすることもできる。In the example shown in Fig. 7, the current detecting section 22 is provided on the inner surface of the shield plate, but in the case of a Scotron (not shown) in which grid lines are provided parallel to the corona discharge line, the current detection section 22 is provided between the grid line and the surface to be discharged. A detection section 22 may also be provided. It is more effective to detect unevenness in corona discharge when a large number of current detection units are installed. Further, as in the illustrated example, an ultrasonic transducer may be applied to the grid lines to remove dirt.
以上の如く、本発明コロナ放電電流のムラを検出しつつ
コロナ放電線もしくはグリッド線を振動させてこれ等に
付着した異物を振り落すものであるから、安定な放電状
態即ち均一な放電特性を長期間維持できると共に、異物
が放電時の熱によりコロナ放電線に焼付くことが少なく
なって該コロナ放電線自体の寿命つまりコロナ放電装置
自体の耐久性を向上する効果が得られる。As described above, since the present invention detects unevenness in the corona discharge current and vibrates the corona discharge line or grid line to shake off foreign matter attached to the line, it is possible to maintain a stable discharge state, that is, uniform discharge characteristics for a long time. In addition to being able to maintain the corona discharge wire for a long period of time, it is also possible to reduce the possibility that foreign matter is burned into the corona discharge wire due to heat during discharge, thereby improving the life of the corona discharge wire itself, that is, the durability of the corona discharge device itself.
第１図は電子写真複写機の極く概略を示す図、第２図は
本発明コロナ放電装置の実施例を示す縦断面図、第３図
はその一部の平面図、第４図はタイミング図、第５図は
第２図実施例の制御回路図、第６図はそのフローチャー
ト図、第７図は他の実施例を示す縦断面図、第８図はこ
の実施例の制御回路図、第９図はフローチャート図であ
る。
１２は超音波振動子、１４はコロナ放電線、１８は発振
回路、１９は高圧トランス、２０は比較制御回路、２１
は検出回路、２２は電流検出部。
第７因
第３図 第１図
第４図Fig. 1 is a diagram showing a very schematic diagram of an electrophotographic copying machine, Fig. 2 is a vertical sectional view showing an embodiment of the corona discharge device of the present invention, Fig. 3 is a plan view of a part thereof, and Fig. 4 is a timing diagram. 5 is a control circuit diagram of the embodiment shown in FIG. 2, FIG. 6 is a flowchart thereof, FIG. 7 is a vertical sectional view showing another embodiment, and FIG. 8 is a control circuit diagram of this embodiment. FIG. 9 is a flowchart diagram. 12 is an ultrasonic vibrator, 14 is a corona discharge wire, 18 is an oscillation circuit, 19 is a high voltage transformer, 20 is a comparison control circuit, 21
2 is a detection circuit, and 22 is a current detection section. 7th cause Figure 3 Figure 1 Figure 4
Claims (1)
の振動を作用させる構成とすると共に、上記コロナ放電
線の放電電流を該コロナ放電線の長手方向に沿って検出
する放電電流検出手段を設け、検出された放電電流値の
最大値と最小値の差分もしくは該放電電流値と予め記憶
された設定値との偏差が一定値以下になるまで上記超音
波振動子を動作させることを特徴とするコロナ放電装置
。(1) The corona discharge line or the grid line is configured to apply vibration of an ultrasonic vibrator, and a discharge current detection means is provided to detect the discharge current of the corona discharge line along the longitudinal direction of the corona discharge line. , the ultrasonic transducer is operated until the difference between the maximum value and the minimum value of the detected discharge current value or the deviation between the discharge current value and a pre-stored set value becomes equal to or less than a certain value. Corona discharge device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10385583A JPS59228679A (en) | 1983-06-10 | 1983-06-10 | Corona discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10385583A JPS59228679A (en) | 1983-06-10 | 1983-06-10 | Corona discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59228679A true JPS59228679A (en) | 1984-12-22 |
Family
ID=14365054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10385583A Pending JPS59228679A (en) | 1983-06-10 | 1983-06-10 | Corona discharging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59228679A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62177571A (en) * | 1986-01-30 | 1987-08-04 | Canon Inc | Cleaning device for discharge line |
| JPH0533160U (en) * | 1991-10-11 | 1993-04-30 | 株式会社リコー | Corona discharge measuring device |
| CN103425013A (en) * | 2012-05-24 | 2013-12-04 | 柯尼卡美能达株式会社 | Charging device and image forming apparatus including the same |
-
1983
- 1983-06-10 JP JP10385583A patent/JPS59228679A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62177571A (en) * | 1986-01-30 | 1987-08-04 | Canon Inc | Cleaning device for discharge line |
| JPH0533160U (en) * | 1991-10-11 | 1993-04-30 | 株式会社リコー | Corona discharge measuring device |
| CN103425013A (en) * | 2012-05-24 | 2013-12-04 | 柯尼卡美能达株式会社 | Charging device and image forming apparatus including the same |
| JP2013246226A (en) * | 2012-05-24 | 2013-12-09 | Konica Minolta Inc | Charger and image forming apparatus |
| US9223243B2 (en) | 2012-05-24 | 2015-12-29 | Konica Minolta, Inc. | Charging device and image forming apparatus including the same |
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