JPS5934578A - Cleaning device - Google Patents
Cleaning deviceInfo
- Publication number
- JPS5934578A JPS5934578A JP14529982A JP14529982A JPS5934578A JP S5934578 A JPS5934578 A JP S5934578A JP 14529982 A JP14529982 A JP 14529982A JP 14529982 A JP14529982 A JP 14529982A JP S5934578 A JPS5934578 A JP S5934578A
- Authority
- JP
- Japan
- Prior art keywords
- image carrier
- blade
- formation area
- developer
- cleaning
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0011—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a blade; Details of cleaning blades, e.g. blade shape, layer forming
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、クリーニグ装置に係り、詳しく杖、移動する
像担持′体上の残留付着物を除去するクリーニング装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning device, and more particularly to a cleaning device for removing residual deposits on a wand and a moving image carrier.
従来、電子写真感光体等の像担持体上に静電潜像を形成
し現像φ転写する画像形成装置或は、磁気記録体等の像
担持体上に磁気潜像を形成し、現像・転写する画像形成
装置等の像担持体をクリーニン／−ｊ−ル装置としてブ
レード・クリーニング方式が汎用されている。Conventionally, an image forming apparatus that forms an electrostatic latent image on an image carrier such as an electrophotographic photoreceptor, develops it, and transfers it, or forms a magnetic latent image on an image carrier such as a magnetic recording material, and performs development and transfer. A blade cleaning method is widely used as a cleaning/jer device for an image bearing member of an image forming apparatus or the like.
この種のりＩＪ−ング装置に於ては、像担持体移動方向
を横切って当接するクリーニングブレード幅を画像形成
域幅より十分長くし、例え除去現像剤がブレードエツジ
沿に相当移動しても除去現像剤が、ブレード側端から画
像域に回り込まない構成としている。In this type of IJ-ing device, the width of the cleaning blade that abuts across the moving direction of the image carrier is made sufficiently longer than the width of the image forming area, so that even if the removed developer moves considerably along the blade edge, it can be removed. The structure is such that the developer does not enter the image area from the side edge of the blade.
ところで、画像形成装置を小型化の為に、クリーニング
装置も小型化しようとすると、クリーニングブレード幅
を、画像形成域幅に近づける必要が生ずる。この為、ブ
レード当接部沿に移動した除去現像剤がブレード側端部
からクリーニング済像相持体の画像形成域に回り込む恐
れが生ずる。By the way, when trying to downsize the cleaning device in order to downsize the image forming apparatus, it becomes necessary to make the width of the cleaning blade closer to the width of the image forming area. For this reason, there is a possibility that the removed developer that has moved along the blade contact portion may enter the image forming area of the cleaned image carrier from the blade side end.
この対策として、クリーニング装置のケーシング開口の
側端にスポンジ等のシール部材を設け、ブレード側端と
シール部材を密着する構成が考えられる。しかし、ブレ
ードとシール部材を（数μ〜数１０μの）除去現像剤が
通り抜けない様に両者を完全に密着することは困難であ
る。−万両者を密着すると特に温度変化による膨張−収
縮の影譬が無視し得ない。膨張時には、ブレード端部近
傍の弾力的変位が拘束されクリーニング不良を生ずる恐
れがある。一方、収縮時には、両者の密着が保たれない
ので、除去現像剤が漏れ出して、続く画像形成に悪影響
を生ずる恐れがある０本発明は、上述の点に鑑み成され
たもので、新規で優れたりＩＪ ＝ング装置に関する
。As a countermeasure against this problem, a configuration may be considered in which a sealing member such as a sponge is provided at the side end of the casing opening of the cleaning device and the sealing member is brought into close contact with the blade side end. However, it is difficult to completely bring the blade and the sealing member into close contact with each other so that the removed developer (of several microns to several tens of microns) does not pass through them. - When the two are brought into close contact with each other, the effects of expansion and contraction due to temperature changes cannot be ignored. At the time of expansion, elastic displacement near the end of the blade may be restricted, resulting in poor cleaning. On the other hand, when shrinking, the adhesion between the two is not maintained, so the removed developer may leak out and cause an adverse effect on the subsequent image formation.The present invention has been made in view of the above points, and is novel. This article relates to an excellent IJ control device.
以下、本発明の詳細を具体例により図面を参照しつつ説
明する〇
第１図は、本発明具体例装置を適用した画像形成装置の
説明図である。Hereinafter, details of the present invention will be explained using a specific example with reference to the drawings. Fig. 1 is an explanatory diagram of an image forming apparatus to which a specific embodiment of the present invention is applied.
１は像担持体で、Ｓｓ、ＯＰＣ等の光導電物質を有する
感光体をドラム状に支持した例である。２はコロナ放電
器で、像担持体上を一様帯電する。Reference numeral 1 denotes an image carrier, which is an example in which a photoreceptor containing a photoconductive material such as Ss or OPC is supported in the form of a drum. A corona discharger 2 uniformly charges the image carrier.
３は短焦点結像光学素子アレー等の光学手段で、像担持
体上に光像照射を成す。４は現像装置で、光像照射に応
じて像担持体上に形成された静電潜像を現像する。3 is an optical means such as a short-focus imaging optical element array, which irradiates a light image onto the image carrier. A developing device 4 develops an electrostatic latent image formed on the image carrier in response to light image irradiation.
５はタイミングローラで、不図示の給紙手段から給送さ
れた転写材８を、像担持体上の現像々と同期して転写位
置へ送る。６は案内ガイドで、７は転写コロナ放電器で
ある。転写位置へ案内ガイド６で導かれた転写材８は、
背面より転写コロナ放電器７により転写コロナを施され
る。これにより転写材上に像担持体上の現像々が転写さ
れる。９は搬送ベルトで、転写材を不図示の定着手段へ
搬送スル。１０は、本発明に基くりｌＪ＝ング装置であ
る。１１は弾性クリーニングブレード、１２ハ除去トナ
一案内シート部材で、各々ハウジング１６の開口部に設
けられている。弾性クリーニングブレード１１で除去さ
れた現像剤は、除去トナー案内シート部材１２により像
担持体から離隔されハウジング１６内に導かれる。１４
は捕獲部材で、クリーニング部材端部の像担持体移動方
向下流側の像担持体表面と当接し、ブレード端部がら漏
れ出た除去現像剤を捕獲する。A timing roller 5 sends a transfer material 8 fed from a paper feeding means (not shown) to a transfer position in synchronization with the development on the image carrier. 6 is a guide, and 7 is a transfer corona discharger. The transfer material 8 guided by the guide 6 to the transfer position is
A transfer corona is applied from the back side by a transfer corona discharger 7. As a result, the developed images on the image carrier are transferred onto the transfer material. A conveyor belt 9 conveys the transfer material to a fixing means (not shown). Reference numeral 10 denotes an lJ=ing device based on the present invention. Reference numeral 11 denotes an elastic cleaning blade, and 12 denotes a toner removal guide sheet member, each of which is provided at the opening of the housing 16. The developer removed by the elastic cleaning blade 11 is separated from the image carrier and guided into the housing 16 by the removed toner guide sheet member 12 . 14
is a capturing member that comes into contact with the surface of the image carrier on the downstream side in the direction of movement of the image carrier at the end of the cleaning member, and captures the removed developer leaking from the end of the blade.
第２図は、クリーニング装置のハウジング開口側（像担
持体対面側）からの部分脱明図である。FIG. 2 is a partially illuminated view of the cleaning device from the housing opening side (the side facing the image carrier).
１１が前述したクリーニングブレード、１２が除去トナ
ー案内シート部材である。１４が捕獲部材、１５がハウ
ジング開口側端に設けたシール部材である０
上述捕獲部材１４は、多孔質弾性体、羊毛フェルト等の
物質を表面とし漏れ出した現像剤を拭掃するのに十分な
押圧力が加えられる。但し、像担持体表面の損耗を回避
する為に１ ｋｇ／ｃｍ以下の線圧、好適には１００ｆ
／ｃｍ以下に設定すると良い。Reference numeral 11 is the cleaning blade described above, and reference numeral 12 is a removed toner guide sheet member. Reference numeral 14 indicates a capture member, and reference numeral 15 indicates a seal member provided at the opening side end of the housing.The capture member 14 has a surface made of a material such as a porous elastic material or wool felt, and is sufficient to wipe away leaked developer. A pressing force is applied. However, in order to avoid wear and tear on the surface of the image carrier, a linear pressure of 1 kg/cm or less, preferably 100 f.
It is best to set it to /cm or less.
またドラム面に当接するため滑面（低摩擦係数）とする
。又粉体等をこの面内で容易に捕集できるように多孔質
或いは繊維質面であることは重要である。羊毛フェルト
やテフロンフェルト等は、それ自体で弾力性を有しかつ
滑面で粉体捕集性も良い。しかし上述の如きフェルトで
は極僅かであるが毛羽が出易く、その毛羽が例えにコロ
ナ放電器内に入り帯電ムラを起こす場合もあるので、例
えしξ
ば表面を僅か、毛羽焼きすると良い。これにより毛羽の
出難い良好な清掃部材とできる。Also, since it comes into contact with the drum surface, it should have a smooth surface (low coefficient of friction). Also, it is important that the surface is porous or fibrous so that powder and the like can be easily collected within this surface. Wool felt, Teflon felt, etc. have elasticity by themselves, have a smooth surface, and have good powder-collecting properties. However, with the above-mentioned felt, a very small amount of fluff is likely to appear, and the fluff may enter the corona discharger and cause uneven charging, so it is better to heat the surface slightly, for example. This makes it possible to obtain a good cleaning member that does not easily generate fuzz.
又第２図Ｐ示一点鎖線は、像担持体上の画像形成領域の
境界を示し、矢印右側がその形成領域である。前述捕獲
部材１４はその端部を境界Ｐ迄として、画像形成領域内
に侵入させない構成とする０これにより像担持体の画像
形成領域に捕獲部材１４との摺擦で、部分的な摩耗が発
生することを防止することができる。Further, the dashed line shown in FIG. 2P indicates the boundary of the image forming area on the image carrier, and the area to the right of the arrow is the forming area. The aforementioned capturing member 14 has its end up to the boundary P and is configured to prevent it from entering the image forming area.0 As a result, partial abrasion occurs in the image forming area of the image carrier due to rubbing with the capturing member 14. This can be prevented.
第６図は、捕獲部材の変形例構成を示す説明図である。FIG. 6 is an explanatory diagram showing a modified example configuration of the capture member.
図示捕獲部材１４′は、第１層１５に弾力性の機能を持
たせ、第２層１６にすべり性と捕集機能を持たせた機能
別多層構成としたものである０具体的には第１層１５に
モルトプレーンを用い第６
２層に植毛布やセーヌ皮状ポリエステル布を用イる。こ
の様な構成にて像担持体の損傷は全く無く粉体捕集性も
高く、かつ毛羽などによる汚れの発生も無く良好な使用
性を示した。The illustrated capturing member 14' has a functional multilayer structure in which the first layer 15 has an elastic function and the second layer 16 has a sliding property and a capturing function. Moltoprene is used for the first layer 15, and flocked cloth or Seine skin-like polyester cloth is used for the second layer. With this configuration, there was no damage to the image bearing member, the powder collection performance was high, and there was no occurrence of stains due to fluff, indicating good usability.
またクリーニングブレード１と捕獲部材１４（１４’）
との間隔は狭ければ狭い程良い。ブレード端部からの飛
散は扇状に広がるため両者の間隔が開き過ぎると巾の広
い捕獲部材を要し、ＯＰＣ等の傷付き易い像担持体のド
ラムにおいては前述第２図示Ｐ線より図中右側の画像領
域内に入り像担持体を傷付ける。この為に形成画像は傷
の入つた画像となってしまう○その為にも前述の如く像
担持体表面の傷の付き易いか難いかにかかわらず捕獲部
材は画像形成領域外に配置すると良好な訳である。Also, the cleaning blade 1 and the capture member 14 (14')
The narrower the distance between the two, the better. Since the scattering from the end of the blade spreads in a fan shape, if the gap between the two is too wide, a wide capturing member is required. enters the image area of the camera and damages the image carrier. For this reason, the formed image will be an image with scratches.For this reason, as mentioned above, regardless of whether the surface of the image carrier is easily scratched or not, it is best to place the capture member outside the image forming area. It is.
又ハウジング開口側端に設けたシール部材１５は、像担
持体の側端と弾力的に接触し側方への除去現像剤の漏れ
出しを防止している。このシール部材の図上刃側（像担
持体移動方向下流側）を伸ばし、前述第３図示構成の捕
獲部材の第１層を兼用させる構成としても良い。このと
きは第４図示の如く、端部シール側にはポリエチレン等
の滑面を有するンート１７を貼着し、捕獲部材１４″側
では前述と同様の植毛布、フェルト等１６奢貼れに良い
。Further, a sealing member 15 provided at the opening side end of the housing elastically contacts the side end of the image carrier to prevent the removed developer from leaking out to the side. A configuration may also be adopted in which the blade side in the drawing (the downstream side in the direction of movement of the image carrier) of this sealing member is extended and is also used as the first layer of the capturing member of the third illustrated configuration. At this time, as shown in the fourth figure, a thread 17 having a smooth surface such as polyethylene is pasted on the end seal side, and the same type of flocked cloth, felt, etc. as described above may be pasted on the capture member 14'' side.
更に、除去現像剤が磁性を有する場合には、捕獲部材に
磁界を作用させる構成として捕獲効果を高めることがで
きる。又通常のトリボ性の現像剤の場合には吸着極性電
圧を併用するようにしても良い。Furthermore, when the removed developer has magnetism, the trapping effect can be enhanced by applying a magnetic field to the trapping member. In the case of a normal tribo-type developer, an adsorption polarity voltage may also be used.
以上具体例にて詳述した如く、本発明は、移動する像担
持体上の残留付着物を除去するりｌＪ＝ング装置に於て
、像担持体移動方向を横切って消接したクリーニング部
材と、クリーニング部材端部の像担持体移動方向下流側
の像担持体表面と消液した捕獲部拐とを有することを特
徴とする。As described above in detail in the specific examples, the present invention provides a cleaning device that removes residual deposits on a moving image carrier, in which a cleaning member dissipates across the moving direction of the image carrier. The cleaning member is characterized by having a surface of the image carrier on the downstream side in the direction of movement of the image carrier at the end of the cleaning member, and a liquid-eliminating capture portion.
本発明け、上述構成により、除去現像剤がブレード端部
からクリーニング済像担持体画像形成領域に何ら回り込
まないようにしたものである。しかも上述構成によりコ
ンパクトな装置を可能とする０According to the present invention, the above-described structure prevents the removed developer from entering the image forming area of the cleaned image carrier from the end of the blade. Moreover, the above configuration enables a compact device.
第１図は、本発明クリーニング装置を適用した画像形成
装置曲明図。
第２図は、本発明具体例りＩＪ ＝ング装置部分説明
図。
第６図は、本発明変形例捕獲部材説明図。
第４図は、不発明の更なる変形例説明図。
１；像担持体、２：コロナ放電器、３；光学手段、４；
現像装置、１０；クリーング装置、１１；クリーニング
グレード、１４；捕１ｆｉｉ材。FIG. 1 is a schematic diagram of an image forming apparatus to which the cleaning device of the present invention is applied. FIG. 2 is a partial explanatory diagram of an IJ = ing device as a specific example of the present invention. FIG. 6 is an explanatory diagram of a capturing member according to a modified example of the present invention. FIG. 4 is an explanatory diagram of a further modified example of the invention. 1; Image carrier, 2: Corona discharger, 3; Optical means, 4;
Developing device, 10; Cleaning device, 11; Cleaning grade, 14; Capture material.
Claims (1)
ーニング装置に於いて、 像担持体移動方向を横切って当接したりＩＪ−ニング部
材と、 りＩＪ ＝ング部材端部の像担持体移動方向下流側の
像担持体表面と当接した捕獲部材とを有することを特徴
とするクリーニング装置。(1) In a cleaning device that removes residual deposits on a moving image carrier, the image carrier at the end of the IJ-ning member that comes into contact with the IJ-ning member across the moving direction of the image-bearing member; A cleaning device comprising a capture member that is in contact with a surface of an image carrier on the downstream side in a moving direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14529982A JPS5934578A (en) | 1982-08-20 | 1982-08-20 | Cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14529982A JPS5934578A (en) | 1982-08-20 | 1982-08-20 | Cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5934578A true JPS5934578A (en) | 1984-02-24 |
| JPH0441350B2 JPH0441350B2 (en) | 1992-07-08 |
Family
ID=15381930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14529982A Granted JPS5934578A (en) | 1982-08-20 | 1982-08-20 | Cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5934578A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5404216A (en) * | 1991-09-12 | 1995-04-04 | Csnon Kabushiki Kaisha | Cleaning device, image forming apparatus including the cleaning device, and method of assembling the cleaning device |
| JP2002169442A (en) * | 2000-12-05 | 2002-06-14 | Ricoh Co Ltd | Image forming device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5332263A (en) * | 1976-09-07 | 1978-03-27 | Searle & Co | Cable handling mechanism synchronously driven with rotaly mechanical element |
| JPS5447413U (en) * | 1977-09-09 | 1979-04-02 | ||
| JPS55147064U (en) * | 1979-04-10 | 1980-10-22 | ||
| JPS5756876A (en) * | 1980-09-24 | 1982-04-05 | Ricoh Co Ltd | Cleaning device of electronic copying machine and the like |
-
1982
- 1982-08-20 JP JP14529982A patent/JPS5934578A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5332263A (en) * | 1976-09-07 | 1978-03-27 | Searle & Co | Cable handling mechanism synchronously driven with rotaly mechanical element |
| JPS5447413U (en) * | 1977-09-09 | 1979-04-02 | ||
| JPS55147064U (en) * | 1979-04-10 | 1980-10-22 | ||
| JPS5756876A (en) * | 1980-09-24 | 1982-04-05 | Ricoh Co Ltd | Cleaning device of electronic copying machine and the like |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5404216A (en) * | 1991-09-12 | 1995-04-04 | Csnon Kabushiki Kaisha | Cleaning device, image forming apparatus including the cleaning device, and method of assembling the cleaning device |
| JP2002169442A (en) * | 2000-12-05 | 2002-06-14 | Ricoh Co Ltd | Image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0441350B2 (en) | 1992-07-08 |
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