JPH09160357A - Cleaning method and tool for corona discharger - Google Patents
Cleaning method and tool for corona dischargerInfo
- Publication number
- JPH09160357A JPH09160357A JP7320245A JP32024595A JPH09160357A JP H09160357 A JPH09160357 A JP H09160357A JP 7320245 A JP7320245 A JP 7320245A JP 32024595 A JP32024595 A JP 32024595A JP H09160357 A JPH09160357 A JP H09160357A
- Authority
- JP
- Japan
- Prior art keywords
- electrode wire
- chassis
- cleaning
- grinding member
- corona discharger
- 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
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004140 cleaning Methods 0.000 title claims description 54
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract 1
- 238000012546 transfer Methods 0.000 description 32
- 239000000919 ceramic Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 239000011538 cleaning material Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Cleaning In Electrography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Cleaning In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子写真印刷装置等の
像形成装置の帯電器或いは転写器等のコロナ放電器の清
掃方法及び清掃工具に係り、特に電極線の汚れを高硬質
材料で形成した研削部材を摺動させて清掃することがで
きるコロナ放電器の清掃方法及び清掃工具に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning method and a cleaning tool for a corona discharger such as a charging device or a transfer device of an image forming apparatus such as an electrophotographic printer, and more particularly, to a stain of an electrode wire with a highly hard material. The present invention relates to a cleaning method and a cleaning tool for a corona discharger that can clean a formed grinding member by sliding it.
【０００２】近来、オフィスオートメーション機器の急
速な普及に伴って複写機, 或いはプリンタ等に電子写真
印刷装置が広く普及しつつある。電子写真印刷装置は、
一様に帯電された感光ドラムの表面にレーザ等で画像情
報に応じて露光して静電潜像を形成し、これをトナーに
よって現像して記録紙に静電的に転写した後、熱及び圧
力等によって定着している。Recently, with the rapid spread of office automation equipment, electrophotographic printers are becoming widespread in copying machines, printers and the like. Electrophotographic printing device
The surface of the uniformly charged photosensitive drum is exposed by a laser or the like according to image information to form an electrostatic latent image, which is developed with toner and electrostatically transferred to recording paper, and then heat and It is fixed by pressure.
【０００３】このような装置の普及により、低コスト
化、小型化が進んだ結果、パーソナルユースにも市場を
広げつつあり、この結果、ユーザがある程度の装置メン
テナンスをする必要が生じている。その一つとして、各
種コロナ放電器の放電ワイヤの清掃が挙げられる。As a result of the spread of such devices, cost reductions and downsizing have been advanced, and as a result, the market is expanding to personal use, and as a result, it becomes necessary for the user to perform some device maintenance. One of them is cleaning the discharge wire of various corona dischargers.
【０００４】即ち、画像形成に使用されるトナーやトナ
ーの外添剤、紙粉等が浮遊してこれらが各部に付着す
る。特に、感光ドラムの一様帯電に使用される帯電器や
感光ドラム上のトナー像を記録紙に転写する転写器の放
電ワイヤがトナー等によって汚れると、帯電器の場合
は、部分的に感光ドラムが帯電しないため、その部分だ
け表面電位が低下し不要な現像が行われてかぶりが生じ
る。また、転写器の場合は、部分的或いは全面的に転写
効率が低下して印刷濃度が低下する。そこでこのような
印刷品質の低下を防止するために、ユーザにおいても効
率良く放電ワイヤの汚れを清掃できる方法が望まれてい
る。That is, the toner used for image formation, the external additive of the toner, the paper powder, etc. float and adhere to each part. In particular, if the charger used for uniform charging of the photosensitive drum or the discharge wire of the transfer device that transfers the toner image on the photosensitive drum to the recording paper is contaminated with toner or the like, in the case of the charger, the photosensitive drum is partially Is not charged, the surface potential is lowered only in that portion, and unnecessary development is performed, causing fogging. Further, in the case of a transfer device, the transfer efficiency is partially or entirely reduced and the print density is reduced. Therefore, in order to prevent such a decrease in print quality, a method that allows the user to efficiently clean the dirt of the discharge wire is desired.
【０００５】[0005]
【従来の技術】図８にレーザプリンタの内部側面図を例
示している。図において、１は所望サイズの用紙２がセ
ットされる給紙部、３は繰出しローラ、４は搬送路、５
はプリンタ部、６はスタッカを示す。2. Description of the Related Art FIG. 8 illustrates an internal side view of a laser printer. In the figure, 1 is a paper feed unit in which a desired size of paper 2 is set, 3 is a delivery roller, 4 is a transport path, and 5
Is a printer unit, and 6 is a stacker.
【０００６】プリンタ部５は、感光ドラム50、一様帯電
器7a、光学ユニット51、現像器52、転写器7b、クリーナ
53、及び定着器54で構成されている。このような構成を
有するので、装置の電源をオンして印刷指示釦を押す
と、印刷指示信号に基づいて給紙部１から用紙２が矢印
Ａ方向に繰り出され、搬送路４を搬送して感光ドラム50
の下方へ送られる。The printer unit 5 includes a photosensitive drum 50, a uniform charging device 7a, an optical unit 51, a developing device 52, a transfer device 7b, and a cleaner.
53 and a fixing device 54. With such a configuration, when the power of the apparatus is turned on and the print instruction button is pressed, the paper 2 is fed out from the paper feed unit 1 in the direction of arrow A based on the print instruction signal, and is conveyed through the conveyance path 4. Photosensitive drum 50
Sent below.
【０００７】この時までに感光ドラム50はクリーナ53に
より残留トナーがクリーニングされ、一様帯電器7aで帯
電されている。そこで、例えば半導体レーザを備えた光
学ユニット51からの光データが感光ドラム50を照射し、
感光ドラム50に形成した静電像は現像器52でトナー像に
現像され、転写帯電器7bで用紙２に転写した後、定着器
54で定着してスタッカ６へ送出される。By this time, the photosensitive drum 50 has been cleaned of residual toner by the cleaner 53 and charged by the uniform charger 7a. Therefore, for example, the optical data from the optical unit 51 equipped with a semiconductor laser irradiates the photosensitive drum 50,
The electrostatic image formed on the photosensitive drum 50 is developed into a toner image by the developing device 52, transferred to the paper 2 by the transfer charger 7b, and then fixed by the fixing device.
It is fixed at 54 and sent to the stacker 6.
【０００８】トナーは、カーボンブラックその他で着色
した微粉末で、磁性材、例えば主として微細鉄粉を樹脂
材でコーティングしたキャリアと混合して現像剤（二成
分現像方式）としたもので、攪拌によりキャリアが帯電
し、キャリアはトナーに電荷を与える。The toner is a fine powder colored with carbon black or the like, which is a developer (two-component developing system) prepared by mixing a magnetic material, for example, fine iron powder with a carrier coated with a resin material, to obtain a developer (two-component developing system). The carrier is charged, and the carrier gives an electric charge to the toner.
【０００９】ここにおいて、一様帯電器7a及び転写器7b
は、いずれもコロナ放電器で同様の構成をしているの
で、代表として転写器7bを例として詳述すると、図９
(a) の正面図及び(b) の斜視図に示すように、転写器7b
は導電性を有する材料、例えばステンレス鋼板で断面が
コ字形の箱形に形成されたシャーシ8aと、シャーシ8aの
長手方向の両端面のほぼ中心間に張られた放電ワイヤ9a
とで構成されたコロトロンである。Here, the uniform charging device 7a and the transfer device 7b
9A and 9B have the same configuration as a corona discharger, the transfer device 7b will be described in detail as an example.
As shown in the front view of (a) and the perspective view of (b), the transfer device 7b
Is a conductive material, for example, a chassis 8a formed in a box shape with a U-shaped cross section from a stainless steel plate, and a discharge wire 9a stretched between the centers of both longitudinal end faces of the chassis 8a.
It is a corotron composed of and.
【００１０】シャーシ8aのコ字形の開口面は間隙を介し
て感光ドラム50の面に対向しており、シャーシ8aと感光
ドラム50はアースされており、放電ワイヤ9aに高圧電源
によって−VCのバイアスを掛けることにより、図１０に
示すように、放電ワイヤ9aからのコロナ放電により用紙
２を帯電させて、感光ドラム50のトナー像を用紙２に転
写することができる。The U-shaped opening surface of the chassis 8a is opposed to the surface of the photosensitive drum 50 with a gap, the chassis 8a and the photosensitive drum 50 are grounded, and the discharge wire 9a is biased to -VC by a high voltage power source. As shown in FIG. 10, it is possible to transfer the toner image on the photosensitive drum 50 onto the paper 2 by charging the paper 2 by corona discharge from the discharge wire 9a.
【００１１】このようにして、多量の印刷（装置によっ
て異なるが、例えば、凡そ10000 枚以上) を行うと、装
置内に浮遊するトナーやトナーの外添剤（例えば、シリ
カ）、紙粉等が次第に放電ワイヤ9aに付着して汚れる。In this way, when a large amount of printing (depending on the apparatus, for example, about 10,000 sheets or more) is performed, toner floating in the apparatus, an external additive of the toner (for example, silica), paper dust, etc. are generated. It gradually adheres to the discharge wire 9a and becomes dirty.
【００１２】放電ワイヤ9aの汚れにより、転写器7bで
は、部分的或いは全面的に転写効率が低下して印刷濃度
が薄くなり印刷品質が低下する。また、一様帯電器で
は、部分的に感光ドラムが帯電しなくなるため、その部
分だけ表面電位が低下し不要な現像が行われてかぶりが
発生し、印刷品質が低下する。In the transfer device 7b, the transfer efficiency is partially or entirely reduced due to the contamination of the discharge wire 9a, the print density is reduced, and the print quality is deteriorated. Further, in the uniform charger, the photosensitive drum is partially not charged, so that the surface potential is lowered only in that portion, unnecessary development is performed, fogging occurs, and print quality deteriorates.
【００１３】そこで、画質の劣化を防ぐために、定期的
又は画質が劣化した際に用いるワイヤ清掃工具が、装置
本体、交換可能なプリンタユニット、トナーカートリッ
ジ等に添付されているか、コロナ放電器にワイヤ清掃工
具として組み込まれている場合が多い。Therefore, in order to prevent the deterioration of the image quality, a wire cleaning tool used regularly or when the image quality is deteriorated is attached to the apparatus main body, the replaceable printer unit, the toner cartridge, or the like, or the wire is attached to the corona discharger. Often incorporated as a cleaning tool.
【００１４】図１１に示すように、ワイヤ清掃工具10
は、転写器7bのシャーシ8aの開口面の対向する長手方向
の二辺の縁に跨がり、両縁のガイド部110a,110b がガイ
ドされて長手方向に摺動可能に形成された摺動板11ａ、
放電ワイヤ9aに接触して汚れを除去する清掃材12、及び
摺動板11ａが摺動し易いように設けた把手13で構成され
ている。清掃材12には、フェルト、綿、布等の柔らかい
物を用いている。As shown in FIG. 11, the wire cleaning tool 10
Is a sliding plate formed across two opposite edges in the longitudinal direction of the opening surface of the chassis 8a of the transfer device 7b, and guide portions 110a and 110b at both edges are guided so as to be slidable in the longitudinal direction. 11a,
It comprises a cleaning material 12 that comes into contact with the discharge wire 9a and removes dirt, and a grip 13 provided so that the sliding plate 11a can slide easily. As the cleaning material 12, a soft material such as felt, cotton or cloth is used.
【００１５】従って、ワイヤ清掃工具10をシャーシ8aの
コ字形の開口面に装着して、シャーシ8aの長手方向に往
復摺動させて放電ワイヤ9aの汚れを除去する。Therefore, the wire cleaning tool 10 is mounted on the U-shaped opening surface of the chassis 8a and slid back and forth in the longitudinal direction of the chassis 8a to remove dirt on the discharge wire 9a.
【００１６】[0016]
【発明が解決しようとする課題】上記従来方法によれ
ば、放電ワイヤの清掃にワイヤ清掃工具を使用する場合
に、フェルト、綿、布等の柔らかい物を用いており、こ
のため、放電ワイヤに異物が付着した状態で継続使用す
ると、通常はワイヤ清掃工具で簡単に落とせる汚れも、
放電時の熱等により炭化して放電ワイヤにこびりつい
て、ワイヤ清掃工具では除去の効果が低下し、表層の汚
れは清掃できるが、こびりついた汚れは清掃不可能にな
る。この結果、印刷品質の低下を招いているという問題
点がある。According to the above-mentioned conventional method, when a wire cleaning tool is used for cleaning the discharge wire, a soft object such as felt, cotton or cloth is used. If you continue to use the product with foreign matter attached, normally, dirt that can be easily removed with a wire cleaning tool
Carbonization due to heat during discharge and the like sticks to the discharge wire, and the removal effect is reduced with a wire cleaning tool, and dirt on the surface layer can be cleaned, but sticky dirt cannot be cleaned. As a result, there is a problem in that the print quality is degraded.
【００１７】本発明は、電極線の清掃を効率良く行うこ
とができ、印字品質を確保することができるコロナ放電
器の清掃方法及び清掃工具を提供することを目的として
いる。An object of the present invention is to provide a cleaning method and a cleaning tool for a corona discharger, which can efficiently clean the electrode wire and ensure the printing quality.
【００１８】[0018]
【課題を解決するための手段】図１及び図２は本発明の
原理説明図で、図１は請求項１に対応し、図２は請求項
２に対応している。1 and 2 are explanatory views of the principle of the present invention. FIG. 1 corresponds to claim 1 and FIG. 2 corresponds to claim 2.
【００１９】図１において、8はシャーシ、９は電極
線、14 は高硬度を有する材料で形成された研削部材で
ある。導電性材料で断面がコ字形で一面が開口した細長
い箱形に形成されたシャーシ８の内部の長手方向の端面
間に電極線９を張架し、電極線９とシャーシ８間に電圧
を印加して、シャーシ８の開口方向へ放電するコロナ放
電器の清掃方法であって、少なくとも１個の研削部材14
を電極線９に接触させて摺動せしめるように構成されて
いる。In FIG. 1, 8 is a chassis, 9 is an electrode wire, and 14 is a grinding member made of a material having high hardness. An electrode wire 9 is stretched between the end faces in the longitudinal direction inside a chassis 8 which is formed of a conductive material and has a U-shaped cross section and one surface of which is open, and a voltage is applied between the electrode wire 9 and the chassis 8. A method of cleaning a corona discharger that discharges in the opening direction of the chassis 8 by using at least one grinding member 14
Is configured to be brought into contact with the electrode wire 9 for sliding.
【００２０】従って、電極線９に研削部材14を接触させ
て摺動すると、研削部材14によって電極線９にこびりつ
いた汚れを除去することができ、清掃効率が改善され
て、正常な放電性能に復帰し、印刷品質を確保すること
ができる。Therefore, when the grinding member 14 is brought into contact with the electrode wire 9 and slides, the grinding member 14 can remove the dirt sticking to the electrode wire 9, and the cleaning efficiency is improved to ensure normal discharge performance. It is possible to recover and secure print quality.
【００２１】図２において、８はシャーシ、９は電極
線、11はシャーシ８の開口する長手方向の対向する二辺
に跨がって着脱自在、且つ摺動自在に装着される摺動
板、14は高硬度を有する材料で形成され、摺動板11のシ
ャーシ８に対向する面に一端が固定された少なくとも１
個の研削部材である。In FIG. 2, 8 is a chassis, 9 is an electrode wire, 11 is a sliding plate which is detachably and slidably mounted across two opposing sides of the chassis 8 in the longitudinal direction. 14 is made of a material having a high hardness and has at least one end fixed to the surface of the sliding plate 11 facing the chassis 8.
It is an individual grinding member.
【００２２】導電性材料で断面がコ字形で一面が開口し
た細長い箱形に形成されたシャーシ８の内部の長手方向
の端面間に電極線９を張架し、電極線９とシャーシ８間
に電圧を印加して、シャーシ８の開口方向へ放電するコ
ロナ放電器の清掃工具であって、摺動板11をシャーシ８
に装着した際に、研削部材14の他端が電極線９に接触す
るように構成されている。An electrode wire 9 is stretched between end surfaces in the longitudinal direction inside a chassis 8 which is formed of a conductive material and has a U-shaped cross section and one surface of which is open. It is a cleaning tool for a corona discharger that applies a voltage to discharge in the opening direction of the chassis 8.
The other end of the grinding member 14 is configured to come into contact with the electrode wire 9 when mounted on the.
【００２３】従って、電極線９に摺動板11を接触させて
摺動すると、電極線９にこびりついた汚れを研削部材14
によって除去することができ、清掃効率が改善される。 請求項３：研削部材14は、金属材料、セラミックス、或
いは表面に研磨材を塗布した樹脂材で形成された構成で
ある。Accordingly, when the sliding plate 11 is brought into contact with the electrode wire 9 and slides, the dirt adhered to the electrode wire 9 is removed by the grinding member 14.
Can be removed and the cleaning efficiency is improved. Claim 3: The grinding member 14 is made of a metal material, ceramics, or a resin material having a surface coated with an abrasive.
【００２４】請求項４：研削部材14を電極線９に接触さ
せて摺動せしめた後、可撓性を有する材料で形成された
拭き取り部材を電極線９に接触させて摺動せしめるよう
に構成されている。A fourth aspect of the present invention is configured such that after the grinding member 14 is brought into contact with the electrode wire 9 to slide it, a wiping member made of a flexible material is brought into contact with the electrode wire 9 to be slid. Has been done.
【００２５】従って、研削部材14によって電極線９にこ
びりついた汚れを研削し、拭き取り部材によって拭き取
って清掃することができる。 請求項５：摺動板11に研削部材14と摺動方向に並べて設
けられ、可撓性を有する材料で、摺動板11をシャーシ８
に装着した際に、先端が電極線９に接触する寸法に形成
された拭き取り部材を備えた構成である。Therefore, the dirt adhering to the electrode wire 9 can be ground by the grinding member 14 and wiped off by the wiping member for cleaning. Claim 5: The sliding plate 11 is provided side by side with the grinding member 14 in the sliding direction and is made of a flexible material.
This is a configuration including a wiping member formed so that the tip of the wiping member comes into contact with the electrode wire 9 when the wiping member is mounted.
【００２６】従って、研削部材14によって電極線９にこ
びりついた汚れを研削し、拭き取り部材によって拭き取
って清掃することができる。 請求項６：研削部材14は、先端に電極線９との接触面積
を増加させる凹部が形成された構成である。Therefore, the dirt adhering to the electrode wire 9 can be ground by the grinding member 14 and wiped off by the wiping member for cleaning. Claim 6: The grinding member 14 has a structure in which a concave portion for increasing the contact area with the electrode wire 9 is formed at the tip.
【００２７】従って、電極線９にこびりついた汚れを広
い面積に亙って研削して除去することができる。 請求項７：研削部材14の凹部は、Ｖ字形状或いはＶ字形
状の底部に湾曲面を有する切り欠き部が形成され、電極
線９が切り欠き部の底部に接触する構成とする。Therefore, the dirt sticking to the electrode wire 9 can be removed by grinding over a wide area. Claim 7: The recess of the grinding member 14 has a V-shaped or V-shaped bottom with a notch having a curved surface, and the electrode wire 9 is in contact with the bottom of the notch.
【００２８】[0028]
【発明の実施の形態】以下、従来例で説明したレーザプ
リンタのコロナ放電器に、本発明を適用した実施例１〜
実施例４（転写器用）及び実施例５（転写器及び一様帯
電器に両用）を図３〜図７を参照して説明する。全図を
通じ同一符号は同一対象物を示す。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments 1 to 1 in which the present invention is applied to the corona discharger of the laser printer described in the conventional example will be described below.
Example 4 (for a transfer device) and Example 5 (for both a transfer device and a uniform charging device) will be described with reference to FIGS. The same reference numerals indicate the same objects throughout the drawings.
【００２９】１）実施例１ 図３は本発明の実施例１を示す構成図である。図３(a)
及び(b) に示すように、ワイヤ清掃工具10ａは、摺動板
11ｂ、研削部材14ａ及び把手13で構成されている。摺動
板11ｂは、両端にガイド部110a,110b が形成され、転写
器7bのシャーシ8aの開口面の対向する長手方向の二辺の
縁に跨がってガイド部110a,110b が係合し、長手方向に
摺動可能に形成されている。1) First Embodiment FIG. 3 is a configuration diagram showing a first embodiment of the present invention. Fig. 3 (a)
As shown in (b) and (b), the wire cleaning tool 10a is
11b, a grinding member 14a and a handle 13. The sliding plate 11b has guide portions 110a, 110b formed at both ends thereof, and the guide portions 110a, 110b are engaged with the sliding plate 11b straddling two edges of the opening face of the chassis 8a of the transfer device 7b facing each other in the longitudinal direction. , Is formed so as to be slidable in the longitudinal direction.
【００３０】研削部材14ａは、ステンレス鋼板（例え
ば、厚さ0.５ｍｍ) で形成され、図において上端が摺動
板11ｂの下面中央部に固定され、下端には切り欠きによ
りＶ溝15が形成されて、摺動板11ｂをシャーシ8aの開口
面に載せた時に、Ｖ溝15の底部が転写器8bの放電ワイヤ
9aに圧接する大きさに形成されている。The grinding member 14a is formed of a stainless steel plate (for example, 0.5 mm in thickness), the upper end is fixed to the center of the lower surface of the sliding plate 11b in the figure, and the V groove 15 is formed at the lower end by a notch. Then, when the sliding plate 11b is placed on the opening surface of the chassis 8a, the bottom of the V groove 15 is the discharge wire of the transfer device 8b.
It is formed in a size to press against 9a.
【００３１】このような構成を有するので、転写器7bの
放電ワイヤ9aがトナー等で汚れて清掃を必要とした時
は、転写器7bを装置から引き出して、シャーシ8aの開口
面にワイヤ清掃工具10ａの摺動板11ｂを載せて、研削部
材14ａを放電ワイヤ9aに圧接させ、把手13によって摺動
板11ｂを転写器7bの長手方向へ摺動させると、研削部材
14ａによって放電ワイヤ9aの汚れが削り落とされて清掃
される。With such a structure, when the discharge wire 9a of the transfer device 7b is contaminated with toner or the like and needs to be cleaned, the transfer device 7b is pulled out of the apparatus and a wire cleaning tool is attached to the opening surface of the chassis 8a. When the sliding plate 11b of 10a is placed, the grinding member 14a is pressed against the discharge wire 9a, and the sliding plate 11b is slid by the handle 13 in the longitudinal direction of the transfer device 7b, the grinding member
The discharge wire 9a is scraped off by 14a and cleaned.
【００３２】従って、従来方法のフェルト等を用いた清
掃材による清掃では、ややもするとよごれが取れないた
め印字濃度が正常濃度に復帰しないような汚れの場合で
も、ワイヤ清掃工具10ａを用いることで、放電ワイヤ10
ａにこびりついた汚れを削り落とすため、転写効率が回
復し印字濃度が初期状態と同等までに復帰させることが
できる。Therefore, in the conventional cleaning method using a cleaning material such as felt, even if the dirt does not return to the normal density because the dirt cannot be removed, the wire cleaning tool 10a can be used. , Discharge wire 10
Since the dirt clinging to a is scraped off, the transfer efficiency is restored and the print density can be returned to the same level as in the initial state.
【００３３】２）実施例２ 図４は本発明の実施例２を示す正面断面図である。実施
例２が実施例１と異なるのは、研削部材をステンレス鋼
板に代えて、セラミックス板を使用し、Ｖ溝の底部に丸
みを持たせたことである。2) Second Embodiment FIG. 4 is a front sectional view showing a second embodiment of the present invention. Example 2 is different from Example 1 in that the grinding member was replaced with a stainless steel plate, a ceramic plate was used, and the bottom of the V groove was rounded.
【００３４】即ち、図４に示すように、ワイヤ清掃工具
10ｂの研削部材14ｂは、セラミックス板（例えば、厚さ
２.0ｍｍ) で形成され、Ｖ溝15ａの底部（図ではＶが逆
様のため上部）に湾曲面ｒが設けられている。湾曲面ｒ
の半径は、放電ワイヤ9aとの接触面積が大きくなるよう
に、放電ワイヤ9aの径に対応して設定されている。That is, as shown in FIG. 4, a wire cleaning tool
The grinding member 14b of 10b is formed of a ceramic plate (for example, a thickness of 2.0 mm), and a curved surface r is provided at the bottom of the V groove 15a (upper because V is reversed in the figure). Curved surface r
The radius of is set in accordance with the diameter of the discharge wire 9a so that the contact area with the discharge wire 9a becomes large.
【００３５】このような構成を有するので、ワイヤ清掃
工具10ｂをシャーシ8aの開口面に載せて摺動することに
より、Ｖ溝15ａの湾曲面ｒにより研削部材14ｂと放電ワ
イヤ9aとの接触面が広く、放電ワイヤ9aの汚れが一層除
去し易くなり、清掃効率を高めることができる。With such a structure, by placing the wire cleaning tool 10b on the opening surface of the chassis 8a and sliding it, the curved surface r of the V groove 15a causes the contact surface between the grinding member 14b and the discharge wire 9a to move. The discharge wire 9a is wider, and the dirt on the discharge wire 9a can be removed more easily, and the cleaning efficiency can be improved.
【００３６】３）実施例３ 図５は本発明の実施例３を示す正面断面図である。実施
例３が上記実施例１及び２と異なるのは、研削部材をス
テンレス鋼板或いはセラミックス板に代えて、樹脂材と
し、表面に研磨材を塗布したことである。3) Third Embodiment FIG. 5 is a front sectional view showing a third embodiment of the present invention. The third embodiment differs from the first and second embodiments in that the grinding member is made of a resin material instead of the stainless steel plate or the ceramic plate, and the surface thereof is coated with the abrasive.
【００３７】即ち、図５に示すように、ワイヤ清掃工具
10ｃの研削部材14ｃは、硬質樹脂材、例えば、アクリル
板（厚さ５.0ｍｍ) で形成され、Ｖ溝15の面に研磨材と
してアルミナ(AI2O3)16 が塗布されている。That is, as shown in FIG. 5, a wire cleaning tool
The grinding member 14c of 10c is formed of a hard resin material such as an acrylic plate (thickness: 5.0 mm), and the surface of the V groove 15 is coated with alumina (AI 2 O 3 ) 16 as an abrasive.
【００３８】このような構成を有するので、ワイヤ清掃
工具10ｃをシャーシ8aの開口面に載せて摺動することに
より、放電ワイヤ9aの汚れが研削部材14ｃによって研削
されて除去されると共に、アルミナ16によって研磨され
るので、清掃効率を一層高めることができる。また、研
削部材14ｂをセラミックス板としたので磨耗に強く、長
寿命である。With this structure, by placing the wire cleaning tool 10c on the opening surface of the chassis 8a and sliding it, dirt on the discharge wire 9a is ground and removed by the grinding member 14c, and the alumina 16 Since it is polished by, the cleaning efficiency can be further enhanced. Further, since the grinding member 14b is a ceramic plate, it is resistant to wear and has a long life.
【００３９】４）実施例４ 図６は本発明の実施例４を示す構成図である。実施例４
が上記実施例１〜３と異なるのは、研削部材に加えて拭
き取り部材を設けたことである。4) Fourth Embodiment FIG. 6 is a block diagram showing a fourth embodiment of the present invention. Example 4
However, the difference from Examples 1 to 3 is that a wiping member is provided in addition to the grinding member.
【００４０】即ち、図６(a) 及び(b) に示すように、ワ
イヤ清掃工具10ｄは、摺動板11ｃに、研削部材14ｂ（セ
ラミックス板）とその前後に拭き取り部材としてフェル
ト12a,12b が取り付けられている。That is, as shown in FIGS. 6 (a) and 6 (b), the wire cleaning tool 10d includes a sliding plate 11c, a grinding member 14b (ceramic plate) and felts 12a, 12b as wiping members before and after the grinding member 14b. It is installed.
【００４１】このような構成を有するので、ワイヤ清掃
工具10ｄをシャーシ8aの開口面に載せて摺動することに
より、放電ワイヤ9aの汚れが研削部材14ｂで削り落とさ
れ、フェルト12a,12b によって拭き取られるので、清掃
効率を高めることができる。With such a structure, by placing the wire cleaning tool 10d on the opening surface of the chassis 8a and sliding it, dirt on the discharge wire 9a is scraped off by the grinding member 14b and wiped by the felts 12a, 12b. Therefore, the cleaning efficiency can be improved.
【００４２】５）実施例５ 図７は本発明の実施例５を示す正面断面図である。実施
例５が上記実施例１〜４と異なるのは、転写器8bと一様
帯電器8aを１つのワイヤ清掃工具で清掃したいが、シャ
ーシの大きさが異なるため共用できないので、組み合わ
せたものにするため、実施例１〜４の転写器用のいずれ
かのワイヤ清掃工具と、一様帯電器用のワイヤ清掃工具
を一体に形成して両用可能としたことである。5) Fifth Embodiment FIG. 7 is a front sectional view showing a fifth embodiment of the present invention. The fifth embodiment is different from the first to fourth embodiments in that the transfer device 8b and the uniform charging device 8a are desired to be cleaned by one wire cleaning tool, but cannot be shared because the chassis sizes are different, so that the combination is made. Therefore, any one of the wire cleaning tools for the transfer device of Examples 1 to 4 and the wire cleaning tool for the uniform charging device are integrally formed so that they can be used for both purposes.
【００４３】即ち、図７に示すように、ワイヤ清掃工具
10ｅは、上側にガイド部110a,110b、下側にガイド部110
A,110B を形成した摺動部材11ｄと、２個の研削部材14
a,14A で構成されている。ガイド部110A,110B 、研削部
材14A 及びＶ溝16A の寸法や位置は、一様帯電器8aのシ
ャーシの寸法及び放電ワイヤの位置に対応するように形
成されている。That is, as shown in FIG. 7, a wire cleaning tool
10e has guide parts 110a and 110b on the upper side and guide part 110 on the lower side.
Sliding member 11d formed with A and 110B and two grinding members 14
It consists of a and 14A. The dimensions and positions of the guide portions 110A and 110B, the grinding member 14A and the V groove 16A are formed so as to correspond to the dimensions of the chassis of the uniform charger 8a and the position of the discharge wire.
【００４４】このような構成を有するので、図示の下側
は一様帯電器7aに使用し、上側は裏返して転写器7bに使
用することにより、１個のワイヤ清掃工具10ｅで一様帯
電器7aと転写器7bの両方の清掃に使用することができ
る。With such a structure, the lower side in the figure is used for the uniform charger 7a, and the upper side is turned over and used for the transfer device 7b, so that one wire cleaning tool 10e can be used for the uniform charger. It can be used to clean both 7a and transfer device 7b.
【００４５】なお、一様転写器8aには、表面電位の制御
電極が感光ドラム50の面にあるため、開口側から放電ワ
イヤの清掃が無理なため、背面部を取り外して開口でき
るように形成して、ここから清掃を行う。Since the uniform transfer unit 8a has the control electrode for the surface potential on the surface of the photosensitive drum 50, it is impossible to clean the discharge wire from the opening side. Then, clean from here.
【００４６】このようにして、研削部材によって放電ワ
イヤの汚れを除去することができ、清掃効率を高めるこ
とができ、一様帯電器7a及び転写器7bがトナー等による
汚れによって低下した放電効率を正常に復帰させること
ができる。従って、印刷品質の低下を防止することがで
きる。In this way, it is possible to remove the dirt on the discharge wire by the grinding member, improve the cleaning efficiency, and reduce the discharge efficiency of the uniform charger 7a and the transfer device 7b due to the dirt such as toner. Can be returned to normal. Therefore, it is possible to prevent deterioration of print quality.
【００４７】上記実施例では、レーザプリンタの場合を
説明したが、他の電子写真印刷装置の場合にも適用する
ことができる。また、クリーナを有するレーザプリンタ
の場合を説明したが、クリーナレスの装置の場合でも適
用することができ、また、廃棄トナーを出さないため
に、クリーナで回収したトナーを現像器に還流させる装
置の場合にも適用することができる。In the above embodiment, the case of the laser printer has been described, but it can be applied to the case of other electrophotographic printing apparatuses. Further, although the case of the laser printer having the cleaner has been described, the invention can be applied to the case of a cleanerless device, and in order to prevent the waste toner from being discharged, the toner collected by the cleaner is returned to the developing device. It can also be applied in cases.
【００４８】更に、一様帯電器7a及び転写器7bの両方を
備えた装置の場合を説明したが、いずれか一方だけを備
えた装置にも適用することができ、一般的に、コロナ放
電器を備えた他の装置の場合にも同様に適用することが
できる。Further, the case of the apparatus provided with both the uniform charging device 7a and the transfer device 7b has been described, but the present invention can be applied to an apparatus provided with only one of them, and generally, a corona discharger The same can be similarly applied to the case of other devices including.
【００４９】また、上記実施例５では、研削部材14ｂを
セラミックス板で形成した場合を説明したが、他の研削
部材、例えば、ステンレス鋼板等を使用しても良く、ま
た異なる研削部材を組み合わせて使用しても良いことは
勿論である。In the fifth embodiment, the case where the grinding member 14b is formed of a ceramic plate has been described, but other grinding members such as stainless steel plate may be used, or different grinding members may be combined. Of course, it may be used.
【００５０】[0050]
【発明の効果】以上説明したように本発明によれば、研
削部材によってコロナ放電器の電極線に付着したトナー
等による汚れを容易に削り落として除去することがで
き、正常な放電効率に復帰させることができるという効
果がある。As described above, according to the present invention, it is possible to easily scrape off and remove stains such as toner adhering to the electrode wire of the corona discharger by the grinding member, and restore the normal discharge efficiency. The effect is that it can be done.
【図１】 本発明の請求項１に対応する原理説明図FIG. 1 is an explanatory view of the principle corresponding to claim 1 of the present invention.
【図２】 本発明の請求項２に対応する原理説明図FIG. 2 is an explanatory view of the principle corresponding to claim 2 of the present invention.
【図３】 本発明の実施例１を示す構成図FIG. 3 is a configuration diagram showing a first embodiment of the present invention.
【図４】 本発明の実施例２を示す正面断面図FIG. 4 is a front sectional view showing a second embodiment of the present invention.
【図５】 本発明の実施例３を示す正面断面図FIG. 5 is a front sectional view showing a third embodiment of the present invention.
【図６】 本発明の実施例４を示す構成図FIG. 6 is a configuration diagram showing a fourth embodiment of the present invention.
【図７】 本発明の実施例５を示す正面断面図FIG. 7 is a front sectional view showing a fifth embodiment of the present invention.
【図８】 レーザプリンタを示す内部側面図FIG. 8 is an internal side view showing a laser printer.
【図９】 転写器を示す構成図FIG. 9 is a block diagram showing a transfer device.
【図１０】 転写器の放電の説明図FIG. 10 is an explanatory diagram of discharge of a transfer device.
【図１１】 従来例のワイヤ清掃工具を示す正面断面図FIG. 11 is a front sectional view showing a conventional wire cleaning tool.
7aは一様帯電器、 7bは転写器、 ８,8a,
8bはシャーシ、９は電極線、 9aは放電ワイ
ヤ、10,10a〜10e はワイヤ清掃工具、 1
1,11a〜11d は摺動板、12は清掃材、 12a,12b
はフェルト、14,14a〜14c,14A は研削部材、
15,15a,15AはＶ溝、16はアルミナ、
Ｒ,rは湾曲面7a is a uniform charger, 7b is a transfer device, 8,8a,
8b is a chassis, 9 is an electrode wire, 9a is a discharge wire, 10 and 10a to 10e are wire cleaning tools, 1
1, 11a to 11d are sliding plates, 12 is cleaning material, 12a, 12b
Is felt, 14,14a to 14c, 14A are grinding members,
15,15a and 15A are V grooves, 16 is alumina,
R and r are curved surfaces
Claims (7)
した細長い箱形に形成されたシャーシの内部の長手方向
の端面間に電極線を張架し、該電極線と該シャーシ間に
電圧を印加して、該シャーシの開口方向へ放電するコロ
ナ放電器の清掃方法であって、 高硬度を有する材料で形成された少なくとも１個の研削
部材を前記電極線に接触させて摺動せしめることを特徴
とするコロナ放電器の清掃方法。1. An electrode wire is stretched between end faces in the longitudinal direction inside a chassis formed of an electrically conductive material and having a U-shaped cross section and an opening on one side, and an electrode wire is stretched between the electrode wire and the chassis. A method of cleaning a corona discharger in which a voltage is applied to discharge in the opening direction of the chassis, in which at least one grinding member made of a material having high hardness is brought into contact with the electrode wire and slid. A method for cleaning a corona discharger, which is characterized in that
した細長い箱形に形成されたシャーシの内部の長手方向
の端面間に電極線を張架し、該電極線と該シャーシ間に
電圧を印加して、該シャーシの開口方向へ放電するコロ
ナ放電器の清掃工具であって、 前記シャーシの開口する長手方向の対向する二辺に跨が
って着脱自在、且つ摺動自在に装着される摺動板と、 高硬度を有する材料で形成され、該摺動板のシャーシに
対向する面に一端が固定された少なくとも１個の研削部
材とを備え、 該摺動板をシャーシに装着した際に、該研削部材の他端
が前記電極線に接触する構成を有することを特徴とする
コロナ放電器の清掃工具。2. An electrode wire is stretched between the end faces in the longitudinal direction inside a chassis formed of a conductive material and having a U-shaped cross section and an opening on one side, and the electrode wire is stretched between the electrode wire and the chassis. A cleaning tool for a corona discharger that applies a voltage to discharge in the opening direction of the chassis, the tool being detachably and slidably mounted across two opposing longitudinal sides of the chassis opening. And a at least one grinding member formed of a material having high hardness and having one end fixed to a surface of the sliding plate facing the chassis. The sliding plate is mounted on the chassis. A cleaning tool for a corona discharger, characterized in that the other end of the grinding member comes into contact with the electrode wire in doing so.
ス、或いは表面に研磨材を塗布した樹脂材で形成された
ことを特徴とする請求項１或いは請求項２のコロナ放電
器の清掃方法及び清掃工具。3. The cleaning method and cleaning method for a corona discharger according to claim 1, wherein the grinding member is formed of a metal material, a ceramic material, or a resin material having a surface coated with an abrasive. tool.
摺動せしめた後、可撓性を有する材料で形成された拭き
取り部材を電極線に接触させて摺動せしめることを特徴
とする請求項１のコロナ放電器の清掃方法。4. The wiping member made of a flexible material is brought into contact with and slid on the electrode wire after the grinding member is brought into contact with and slid on the electrode wire. Item 1. A method for cleaning a corona discharger according to item 1.
べて設けられ、可撓性を有する材料で、摺動板を前記シ
ャーシに装着した際に、先端が前記電極線に接触する寸
法に形成された拭き取り部材を備えたことを特徴とする
請求項２のコロナ放電器の清掃工具。5. The sliding plate is provided side by side with the abrasive in the sliding direction, and is made of a flexible material, and when the sliding plate is mounted on the chassis, the tip of the sliding plate contacts the electrode wire. The corona discharger cleaning tool according to claim 2, further comprising a wiping member formed to have a size.
接触面積を増加させる凹部が形成されたことを特徴とす
る請求項１或いは請求項２のコロナ放電器の清掃方法及
び清掃工具。6. The cleaning method and the cleaning tool of the corona discharger according to claim 1, wherein the grinding member has a recess formed at a tip thereof to increase a contact area with the electrode wire.
Ｖ字形状の底部に湾曲面を有する切り欠き部が形成さ
れ、電極線が切り欠き部の底部に接触することを特徴と
する請求項６のコロナ放電器の清掃方法及び清掃工具。7. The recess of the grinding member is formed in a V-shaped or V-shaped bottom with a notch having a curved surface, and the electrode wire is in contact with the bottom of the notch. Item 6. A method and a tool for cleaning a corona discharger according to item 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7320245A JPH09160357A (en) | 1995-12-08 | 1995-12-08 | Cleaning method and tool for corona discharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7320245A JPH09160357A (en) | 1995-12-08 | 1995-12-08 | Cleaning method and tool for corona discharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09160357A true JPH09160357A (en) | 1997-06-20 |
Family
ID=18119350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7320245A Pending JPH09160357A (en) | 1995-12-08 | 1995-12-08 | Cleaning method and tool for corona discharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09160357A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1237049A2 (en) * | 2001-02-28 | 2002-09-04 | Heidelberger Druckmaschinen Aktiengesellschaft | Automatic device for cleaning corona wires |
| US7043176B1 (en) | 2002-09-26 | 2006-05-09 | Eastman Kodak Company | Apparatus and method for damping a corona wire in an electrographic printer |
-
1995
- 1995-12-08 JP JP7320245A patent/JPH09160357A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1237049A2 (en) * | 2001-02-28 | 2002-09-04 | Heidelberger Druckmaschinen Aktiengesellschaft | Automatic device for cleaning corona wires |
| US6580885B2 (en) * | 2001-02-28 | 2003-06-17 | Heidelberger Druckmaschinen Ag | Automatic mechanism for cleaning corona wires |
| EP1237049A3 (en) * | 2001-02-28 | 2005-03-09 | Eastman Kodak Company | Automatic device for cleaning corona wires |
| US6868242B2 (en) | 2001-02-28 | 2005-03-15 | Eastman Kodak Company | Mechanism and method for cleaning corona wires |
| US7043176B1 (en) | 2002-09-26 | 2006-05-09 | Eastman Kodak Company | Apparatus and method for damping a corona wire in an electrographic printer |
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