JPS60107680A - Cleaning device - Google Patents
Cleaning deviceInfo
- Publication number
- JPS60107680A JPS60107680A JP21419883A JP21419883A JPS60107680A JP S60107680 A JPS60107680 A JP S60107680A JP 21419883 A JP21419883 A JP 21419883A JP 21419883 A JP21419883 A JP 21419883A JP S60107680 A JPS60107680 A JP S60107680A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- guide roller
- image forming
- cleaning device
- forming body
- 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
- G03G21/0058—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 roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電子写真複写機等記録装置の像形成体のクリ
ーニング装ｆｔ Ｋ関し、特に、移動する像形成体の表
面から残留トナーを掻き落す掻き落し部材と、掻き落さ
れた現像剤を表面に受けて像形成体の表面から遠ざける
ように搬送するガイドローラと、該ガイドローラに接触
してガイドローラから現像剤を分離して落す分離部材と
を備えたクリーニング装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning device ftK for an image forming body of a recording device such as an electrophotographic copying machine, and particularly to a cleaning device ftK for cleaning residual toner from the surface of a moving image forming body. A scraping member that removes the developer, a guide roller that receives the scraped developer on its surface and transports it away from the surface of the image forming body, and a separation member that contacts the guide roller to separate and drop the developer from the guide roller. The present invention relates to a cleaning device including a member.
上述のよう外クリーニング装置としては第１図に示した
ような構造のものが一般的である。第１図において、１
は表面に電子写真感光体や誘電体から成る像形成層を有
し、矢印方向に回転する像形成体ドラム、２は支軸３を
中心に反時計方向に回動させることができるクリーニン
グ装置枠、４はクリーニング装置枠２に対し軸５を中心
に回動可能に取付けられた保持枠６によって保持され、
先端を像形成体ドラム１の表面に圧接されるゴム板ある
いは樹脂板等から成る掻き落し部材、７は掻き落し部材
４が像形成体ドラム１の表面から掻き落しだ残留トナー
等の現像剤を表面に受けて、像形成体ドラム１の表面か
ら遠ざけるように搬送する、矢印方向に回転するガイド
ローラ、８はガイドローラ７の表面に接触して、ガイド
ローラ７からトナー等を分離させて落すポリエステル等
の樹脂板から成る分離部材である。As mentioned above, the outer cleaning device generally has a structure as shown in FIG. In Figure 1, 1
2 is an image forming drum that has an image forming layer made of an electrophotographic photoreceptor or a dielectric material on its surface and rotates in the direction of the arrow; 2 is a cleaning device frame that can be rotated counterclockwise around a support shaft 3; , 4 are held by a holding frame 6 rotatably attached to the cleaning device frame 2 around a shaft 5,
A scraping member 7 is made of a rubber plate or a resin plate, the tip of which is pressed against the surface of the image forming drum 1, and a scraping member 4 scrapes off developer such as residual toner from the surface of the image forming drum 1. A guide roller 8 rotating in the direction of the arrow receives the surface of the image forming body drum 1 and conveys it away from the surface of the image forming body drum 1. A guide roller 8 contacts the surface of the guide roller 7 to separate and drop toner, etc. from the guide roller 7. This is a separation member made of a resin plate such as polyester.
このような構成の従来のクリーニング装置は、ガイドロ
ーラ′７に表面が滑らかなゴム等の弾性体から成る弾性
表層７ａを有するものを用いている。A conventional cleaning device having such a structure uses a guide roller '7 having an elastic surface layer 7a made of an elastic material such as rubber with a smooth surface.
それは、ガイドローラ７と像形成体ドラム１０間隙から
トナー等がこぼれたりすることのないようにガイドロー
ラ７を像形成体ドラム１の表面に接近させて、その間に
ごみや紙粉等の異物が挾み込まれても、像形成体ドラム
１の表面が傷付けられないため、および、ガイドローラ
７０表面のトナー等の搬送性を向上させるだめである。This is done by moving the guide roller 7 close to the surface of the image forming drum 1 to prevent toner from spilling out from the gap between the guide roller 7 and the image forming drum 10, and to prevent foreign matter such as dust and paper powder from falling between the guide roller 7 and the image forming drum 10. This is because the surface of the image forming member drum 1 will not be damaged even if the image forming member drum 1 is sandwiched, and the conveyance of toner, etc. on the surface of the guide roller 70 will be improved.
しかし、弾性表層７ａ分有していても、表面が滑らかで
あるためトナー等が滑って、特にガイドローラ７と感光
体ドラム１０表面の接近している部分に溜り易いと云う
問題がある。そして、このようにトナー等が溜ると、そ
れが像形成体の性能に悪影響を及ぼすことがあったり、
また、クリー二／グ装置枠２を反時計方向に回動させて
保守を行うような場合に、トナー等がとほれ記録装置の
内部を汚しこのトナー等の溜ることを防止するだめに、
弾性表層７ａの表面に凹凸や溝を付けて、ガイドローラ
７の搬送性を向上させることは容易に考えられる。しか
し、それには、分離部材８によってガイドローラ７の表
面からトナー等を分離することが十分に行われなくなっ
たり、あるいは、分離部材８が振動してトナー等を飛散
させ、クリーニング装置枠２と像形成体ドラム１０間隙
からトナーの吹き出しが生ずるようになったシ、分離部
材８の損耗することが著しくなったりする問題が伴う。However, even with the elastic surface layer 7a, there is a problem in that the surface is smooth, so that toner etc. easily slip and accumulate particularly in the area where the guide roller 7 and the surface of the photoreceptor drum 10 are close to each other. When toner etc. accumulates in this way, it may have a negative effect on the performance of the image forming body.
In addition, when maintenance is performed by rotating the cleaning device frame 2 counterclockwise, in order to prevent toner from falling and contaminating the inside of the recording device and accumulating.
It is easily possible to improve the conveying performance of the guide roller 7 by adding unevenness or grooves to the surface of the elastic surface layer 7a. However, this may result in the separating member 8 not being able to sufficiently separate the toner etc. from the surface of the guide roller 7, or the separating member 8 vibrating and scattering the toner etc., causing the cleaning device frame 2 and the image Problems arise in that toner is blown out from the gap between the forming drums 10 and the separating member 8 is considerably worn out.
このような従来のクリーニング装置における問題を解消
するために、本発明者らは先に、ガイドローラ７の弾性
表層７ａを表面に現像剤の粒径以上で２００μｍ以下の
直径の孔が分布するスポンジ層で構成し、ガイドローラ
７を像形成体の表面に接触して従動回転するものとした
りクリーニング装置を発明した。このクリーニング装置
によれば、ガイドローラ７は、スポンジ層の像形成体と
の摩擦によって円滑に回転し、表面の孔によってトナー
等を滑らせることなく効率よく搬送し、分肉ｉ（部材８
が当接する位置ではスポンジ層の弾性変形によつＣ孔の
中のトナー等まで分離されるから、クリーニング装置ｉ
ｆ枠２と像形成体ドラム１の間からトナー等をこぼれ落
ちさせることがなく、分離部桐８を振動させることも少
なく、像形成体や分離部（Ａ８を損耗させることも少な
い、と云う優れた効果を与える。この発明は、特願昭５
８−１４１９４９号によシ出願されている。In order to solve such problems with conventional cleaning devices, the present inventors first fabricated a sponge on the surface of the elastic surface layer 7a of the guide roller 7, which has pores with a diameter equal to or larger than the particle size of the developer and equal to or smaller than 200 μm. A cleaning device was invented in which the guide roller 7 was configured to be rotated as a result of contact with the surface of the image forming body. According to this cleaning device, the guide roller 7 rotates smoothly due to the friction of the sponge layer with the image forming body, efficiently conveys toner etc. without slipping through the holes on the surface,
The cleaning device i
The advantage is that toner etc. will not spill from between the f frame 2 and the image forming body drum 1, the separation part paulownia 8 will not be vibrated, and the image forming body and separation part (A8) will not be worn out. This invention is patented in 1973.
No. 8-141949.
本発明は、上記特願昭５８−１４１９４９号の発明の外
縁についてさらに検討を重ねた結果なされたものであり
、ガイドローラフのスポンジ層の孔の径全５００μｍ以
下の範凹まで大きくして、孔の中にトナー等が分離され
ずに残るようになっても、それは、比較的早期にガイド
ローラフの一部になったように安定するから、トナー等
の搬送性を低下させ７ｙ９、こぼれたシするようなこと
はなく、また、孔の中に安定する結果、分離部材８の振
動も大きくならず、像形成体や分離部材８の損耗も増大
しないと云うことを見出してなされたものである。The present invention has been made as a result of further study on the outer edge of the invention of the above-mentioned Japanese Patent Application No. 141949/1982, and the pores of the sponge layer of the guide roller rough are enlarged to a range of 500 μm or less in total diameter. Even if toner, etc. remains in the hole without being separated, it becomes stable as if it had become part of the guide roller rough at a relatively early stage, reducing the conveyance of toner, etc., and causing spillage. This was made based on the discovery that the separation member 8 does not suffer from increased vibration and wear and tear on the image forming body and the separation member 8 does not increase as a result of the separation member 8 being stabilized in the hole. It is.
すなわち、本発明は、移動する像形成体の表面から残留
現像剤を掻き落す掻き落し部材と、掻き落された現像剤
を表面に受けて像形成体の表面から遠ざけるように搬送
するガイドローラと、該ガイドローラに接触してガイド
ローラから現像剤を分離する分離部制とを備えたクリー
ニング装置において、前記ガイドローラを表面に差し渡
し径が２００μｍより太きく５００μｍ以下の孔が分布
するスポンジ層を有して前記像形成体の表面に接触し従
動回転するローラとしたことを特徴とするクリーニング
装置にある。That is, the present invention includes a scraping member that scrapes off residual developer from the surface of a moving image forming body, and a guide roller that receives the scraped developer on its surface and conveys it away from the surface of the image forming body. , a cleaning device equipped with a separating section system that comes into contact with the guide roller and separates the developer from the guide roller, wherein the guide roller is spread over the surface of the sponge layer in which pores having a diameter larger than 200 μm and 500 μm or less are distributed. The cleaning device is characterized in that the cleaning device has a roller that contacts the surface of the image forming body and rotates as a result of the rotation.
以下、第１図及び第２図を参照して本発明を説明する。 The present invention will be explained below with reference to FIGS. 1 and 2.
本発明は、第１図に示したようなりリーニング装置に゛
おいて、ガイドローラ７の弾性表層７ａにトナー等が入
シ込み得る適当な大きさの孔７ｂが表面に開口するスポ
ンジ、例えばクロロブレンゴムから成るスポンジを用い
、そして、ガイドローラ７を像形成体の表面に接触して
従動回転するものとしたことによって、従来のクリーニ
ング装置における前述の問題を解消し尼ものである。こ
の弾性表層７ａのスポンジの表面に開口する適当な大き
さ孔７ｂとしては、差し渡し径が２００μｍより太きく
５００μｍ以下の孔としている。これは、差し渡し径を
現像剤の粒径以上で２００μｍ以下とする範囲は既に特
願昭５８−１４１９４９号によって出願されており、そ
の範囲外の２００μｍより大きり５００μｍ以下とする
範囲でも特願昭５８−１４１９４９号の発明と同様の効
果が得られるからである。そして、表面に分布する孔７
ｂの差し渡し径が総べて５００μｍより大となると、孔
に残留するトナー等が安定せず、増減して、クリーニン
グ装置枠２と像形成体ドラム１の間隙からこぼれるよう
になったり、分離部材８の振動が減少することなく、ク
リーニング装置枠２と像形成体ドラム１０間隙からトナ
ーの吹き出しが生ずるようになっだシ、分離部材８の損
耗が著しくなったりする。The present invention provides a cleaning device as shown in FIG. 1 using a sponge, such as a chloroform sponge, which has holes 7b of a suitable size on the surface of the elastic surface layer 7a of the guide roller 7 through which toner or the like can enter. By using a sponge made of Blend rubber and by making the guide roller 7 rotate in contact with the surface of the image forming body, the above-mentioned problems in the conventional cleaning device can be solved. The appropriately sized holes 7b opened in the surface of the sponge of the elastic surface layer 7a are holes with a diameter greater than 200 μm and less than 500 μm. This is because a range in which the diameter is greater than or equal to the particle size of the developer and less than 200 μm has already been filed in Japanese Patent Application No. 141949/1989, and a range outside of that range in which the diameter is greater than 200 μm and less than 500 μm has also been filed. This is because the same effect as the invention of No. 58-141949 can be obtained. And holes 7 distributed on the surface
If the total diameter of b is larger than 500 μm, the toner etc. remaining in the holes will not be stable, increase or decrease, and may spill out from the gap between the cleaning device frame 2 and the image forming body drum 1, or the separation member Without reducing the vibration of the separation member 8, toner starts to blow out from the gap between the cleaning device frame 2 and the image forming member drum 10, and the separation member 8 becomes severely worn.
本発明は、像形成体と接触して従動回転するガイドロー
ラの表面を差し渡し径が２００μｍより太きく５００μ
ｍ以下の孔が分布するスポンジ層で構成したことによっ
て、ガイドローラと像形成体表面との間からトナー等が
こぼれ落ちたり、そこにトナー等が溜ることもなく、像
形成体や分前部４Ａの損耗することも少なくて、ガイド
ローラが効率的にトナー等をクリーニング装置枠のトナ
ー溜りへと搬送すると云う優れた効果を奏する。In the present invention, the diameter across the surface of the guide roller that is driven to rotate in contact with the image forming body is larger than 200 μm and is 500 μm.
Since the sponge layer is made of a sponge layer in which pores of m or less in size are distributed, toner, etc. does not fall out from between the guide roller and the surface of the image forming body, and toner, etc. does not accumulate there. The guide roller has an excellent effect of efficiently conveying toner and the like to the toner reservoir in the cleaning device frame with less wear and tear.
第１図は本発明に関係するクリーニング装置の例を示す
断面図、第２図は本発明クリーニング装置のガイドロー
ラ表面部分の拡大断面図である。
１・・・像形成体ドラム、 ２・・クリーニング装置枠
、３・・・支軸、 ４・・・掻き落し部材、５・・・軸
、 ６・・・保持枠、
７・・・ガイドローラ、７ａ・・・弾性表層、７ｂ・・
・孔、 ８・・・分離部材。FIG. 1 is a sectional view showing an example of a cleaning device related to the present invention, and FIG. 2 is an enlarged sectional view of the surface portion of a guide roller of the cleaning device of the present invention. DESCRIPTION OF SYMBOLS 1... Image forming body drum, 2... Cleaning device frame, 3... Support shaft, 4... Scraping member, 5... Shaft, 6... Holding frame, 7... Guide roller , 7a... elastic surface layer, 7b...
- Hole, 8... Separation member.
Claims (1)
落し部材と、掻き落された現像剤を表面に受けて像形成
体の表面から遠ざけるように搬送するガイドローラと、
該ガイドローラに接触してガイドローラから現像剤を分
離する分離部材とを備えたクリーニング装置において、
前記ガイドローラを表面に差し渡し径が２００μｍより
大きく５００μｍ以下の孔が分布するスポンジ層を有し
て前記像形成体の表面に接触し従動回転するローラとし
たことを特徴とするクリーニング装置。a scraping member that scrapes off residual developer from the surface of the moving image forming body; a guide roller that receives the scraped developer on its surface and transports it away from the surface of the image forming body;
A cleaning device comprising a separation member that comes into contact with the guide roller and separates the developer from the guide roller,
A cleaning device characterized in that the guide roller is a roller having a sponge layer on the surface of which pores having a diameter of more than 200 μm and less than 500 μm are distributed, and is in contact with the surface of the image forming body and rotates drivenly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21419883A JPS60107680A (en) | 1983-11-16 | 1983-11-16 | Cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21419883A JPS60107680A (en) | 1983-11-16 | 1983-11-16 | Cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60107680A true JPS60107680A (en) | 1985-06-13 |
| JPH0132507B2 JPH0132507B2 (en) | 1989-07-04 |
Family
ID=16651850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21419883A Granted JPS60107680A (en) | 1983-11-16 | 1983-11-16 | Cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60107680A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0597444A1 (en) * | 1992-11-09 | 1994-05-18 | Konica Corporation | Toner guide roller for image-forming process and apparatus applied therewith |
| EP0652495A1 (en) * | 1993-11-09 | 1995-05-10 | Xerox Corporation | Cleaner blade lubricating system |
| EP0989470A2 (en) * | 1998-09-22 | 2000-03-29 | Canon Kabushiki Kaisha | An image forming apparatus |
-
1983
- 1983-11-16 JP JP21419883A patent/JPS60107680A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0597444A1 (en) * | 1992-11-09 | 1994-05-18 | Konica Corporation | Toner guide roller for image-forming process and apparatus applied therewith |
| EP0652495A1 (en) * | 1993-11-09 | 1995-05-10 | Xerox Corporation | Cleaner blade lubricating system |
| EP0989470A2 (en) * | 1998-09-22 | 2000-03-29 | Canon Kabushiki Kaisha | An image forming apparatus |
| EP0989470A3 (en) * | 1998-09-22 | 2001-08-16 | Canon Kabushiki Kaisha | An image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0132507B2 (en) | 1989-07-04 |
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