JPS6033582A - Cleaning device - Google Patents
Cleaning deviceInfo
- Publication number
- JPS6033582A JPS6033582A JP14194983A JP14194983A JPS6033582A JP S6033582 A JPS6033582 A JP S6033582A JP 14194983 A JP14194983 A JP 14194983A JP 14194983 A JP14194983 A JP 14194983A JP S6033582 A JPS6033582 A JP S6033582A
- Authority
- JP
- Japan
- Prior art keywords
- guide roller
- toner
- image forming
- holes
- developer
- 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】
〔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
ーニング装置に関し、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(1)
成体の表面から遠ざけるように搬送するガイド四−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 [Industrial Application Field] The present invention relates to a cleaning device for an image forming body of a recording device such as an electrophotographic copying machine, and in particular to a cleaning device for scraping off residual toner from the surface of a moving image forming body. A removing member, a guide roller that receives the scraped developer on its surface and conveys it away from the surface of the image (1), and a guide roller that comes into contact with the guide roller to separate the developer from the guide roller. The present invention relates to a cleaning device equipped with a separation member that is dropped by the user.
上述のようなり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た残留トナー
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(2)
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 leaning 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 7 removes developer such as residual toner scraped off from the surface of the image forming drum 1 by the scraping member 4. A guide roller 8 that rotates in the direction of the arrow receives the surface of the image forming body drum 1 and transports 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 the toner, etc. from the guide roller 7 (2). This is a separating member made of a resin plate made of polyester or the like.
このよう彦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。In the conventional cleaning device having such a structure, the guide roller 7 has 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1の間隙から
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
7の表面のトナー等の搬送性を向上させるためである。The guide roller 7 is brought close to the surface of the image forming body drum 1 to prevent toner from spilling from the gap between the guide roller 7 and the image forming body drum 1, and foreign substances such as dust and paper powder are placed between the guide roller 7 and the image forming body drum 1. This is to prevent the surface of the image forming member drum 1 from being damaged even if the image forming member drum 1 is caught in the guide roller 7, and to improve the conveyance of toner, etc. on the surface of the guide roller 7.
しかし、弾性表層7aを有していても、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シ易いと云う
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、クリーニング装置枠2を反時計方向に回動させて
保守を行うような場合に、トナー等がとばね記録装置の
内部を汚したすすることが起る。However, even with the elastic surface layer 7a, since the surface is smooth, toner and the like can 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.
Further, when maintenance is performed by rotating the cleaning device frame 2 counterclockwise, toner or the like may contaminate the inside of the spring recording device.
このトナー等の溜ることを防止するために、弾性表層7
a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フの表面からトナ
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1の間隙からトナー
の吹き出しが生ずるようになったり、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。In order to prevent this toner from accumulating, the elastic surface layer 7
It is easily possible to improve the conveyance performance of the guide roller 7 by adding unevenness or grooves to the surface of the guide roller 7. 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 rough, or the separating member 8 vibrating and scattering the toner etc., causing the cleaning device frame 2 and the image This poses problems such as toner blowing out from the gaps in the forming drum 1 and severe wear and tear on the separating member 8.
本発明は、上述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々されたものであり、ガイドロ
ーラの搬送性を向上させて像形成体表面との間にトナー
等の溜ることをなくし、しかも、ガイドローラからのト
ナー等の分離が十分に行われて、分離部材が損耗したl
−ナー等を飛散させたりすることも少なく、像形成体表
面を傷付けることもないクリーニング装置を提供するも
のである。The present invention has been made in order to solve the above-mentioned problems with conventional cleaning devices, and improves the conveying performance of the guide roller to eliminate the accumulation of toner etc. between the guide roller and the surface of the image forming body. Moreover, the separation of toner, etc. from the guide roller was sufficiently performed, and the separating member was worn out.
- To provide a cleaning device that does not scatter toner or the like and does not damage the surface of an image forming body.
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現像剤の粒径以上
で200μm以下の直径の孔の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。The present invention includes a scraping member that scrapes off residual developer from the surface of a moving image forming body, 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 comprising a separation member that comes into contact with a guide roller and separates the developer from the guide roller, wherein the guide roller has a sponge layer on the surface of which pores having a diameter of not less than the particle size of the developer and not more than 200 μm are distributed. and a roller that contacts the surface of the image forming body and rotates drivenly.
以下、本発明を第1図及び第2図を参照して説明する。 Hereinafter, the present invention will be explained 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にトナー等が入り
込み得る適当な大きさの孔が表面に開口するスポンジ、
例えばクロロプレンゴムか(5)
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、前記目的を達成したものである0
本発明において、ガイドローラフのスポンジから成る弾
性表層7aの表面に分布する孔が総べてトナー等の入シ
込めない程小さなものであると、トナー等の搬送性が従
来のゴム被覆のガイドローラと殆んど変らなくなって、
トナー等が像形成体の表面との間に溜り易くなるし、ま
た、像形成体表面との摩擦係数が減少し、さらに、表面
の孔が小さいと云うことは内部の孔もまた小さいと云う
ことで、弾性表層7aの圧縮性も小さくなるから、ガイ
ドローラ7の従動回転に滑りが生じ易くなって、像形成
体の表面を損耗させ易くもなる。したがって、スポンジ
の弾性表層7aは表面にトナー等の入り込み得る大きさ
の孔が分布しているものであることが必要である。しか
し、その孔が総べて直径200μmよりも大きくなると
、今度は従来のゴム被覆ガイドローラの表面に凹凸や溝
を付け(6)
た場合と同様の問題が生ずるようになる。したがって、
ガイドローラ7の弾性表層7aは、表面に現像剤の粒径
以上で200μm以下の直径の孔が多く分布する前記の
如きスポンジから成るものであることを必要とし、全部
の孔がこの範囲にあるようなものが好ましいが、多少の
小さい孔や大きい孔を含むものであってもよい。このよ
うな弾性表層7aを用いたことによって、ガイドローラ
7を像形成体の表面と接触させて従動回転するものとし
ても、弾性表層7aの圧縮性と摩擦係数が優れるから、
ガイドロー27は像形成体の表面と滑りなく同一速度で
回転して、像形成体の表面を損耗させること少なく、そ
して、弾性表層7aの表面の孔が掻き増シ部桐4で掻き
落されたトナー等を引掛けるようにして運ぶから、搬送
性が向上して、トナー等の溜ることが無くなり、しかも
、分離部材8が振動したり、分離部材8によるガイドロ
ーラ7からのトナー等の分離が不十分になったりするこ
ともない、と云う優れた結果が得られる。The present invention provides a cleaning device as shown in FIG. 1, which includes a sponge having holes of an appropriate size on its surface that allow toner to enter into the elastic surface layer 7a of the guide roller 7;
For example, the above object is achieved by using a sponge made of chloroprene rubber (5) and by making the guide roller 7 contact the surface of the image forming body and rotate as a result of the rotation. If all the holes distributed on the surface of the elastic surface layer 7a made of sponge of the guide roller rough are so small that toner, etc. cannot enter, the conveyance of toner, etc. is almost the same as that of a conventional rubber-coated guide roller. Nothing has changed,
Toner etc. tend to accumulate between the surface of the image forming body and the coefficient of friction with the surface of the image forming body decreases.Furthermore, if the pores on the surface are small, the pores inside are also small. As a result, the compressibility of the elastic surface layer 7a is also reduced, making it easier for the guide roller 7 to slip during the driven rotation, thereby making the surface of the image forming body more likely to wear out. Therefore, the elastic surface layer 7a of the sponge needs to have pores distributed on its surface large enough to allow toner to enter. However, if all of the holes are larger than 200 μm in diameter, problems similar to those caused when the surface of a conventional rubber-coated guide roller is provided with irregularities and grooves (6) will occur. therefore,
The elastic surface layer 7a of the guide roller 7 is required to be made of the above-mentioned sponge, which has many pores distributed on its surface with a diameter larger than the developer particle size and 200 μm or less, and all the pores are within this range. Although it is preferable that the pores have small or large pores, the pores may contain some small or large pores. By using such an elastic surface layer 7a, the compressibility and coefficient of friction of the elastic surface layer 7a are excellent even when the guide roller 7 is brought into contact with the surface of the image forming body and rotates drivenly.
The guide row 27 rotates at the same speed as the surface of the image forming body without slipping, so that the surface of the image forming body is not abraded, and the pores on the surface of the elastic surface layer 7a are scraped off by the scraping part paulownia 4. Since the toner, etc., is carried as if it is caught, the conveyance performance is improved and there is no accumulation of toner, etc., and there is no possibility that the separating member 8 will vibrate or the toner, etc. will be separated from the guide roller 7 by the separating member 8. Excellent results can be obtained without causing insufficient performance.
第2図は、ガイドローラ7の弾性表層7aの表面がトナ
ー等を搬送して、分離部材8によ、?トナー等を分離さ
れる状態を示しており、弾性tFJfft7aの表面に
は孔の内部も含めて分子間力によシトナー粒子が薄く比
較的強固に付着するが、その上に乗っているトナー等は
、トナー同志の静電的斥力も働いていて、軽く乗ってい
る状態にある。そして、弾性表層7aの孔は、内部が一
様にトナー等で充填された状態にはならずに、相当の空
間を残してトナー等を引掛けて搬送するように働く。こ
のようにトナー等を搬送した孔が分離部材8の軽く圧接
している位IM[達すると、孔の縁が分離部材8に押さ
れて、比の形状が変形するようになり、その変形の作用
で孔に入り込んでいたトナー等が図示のように跳ね出さ
t]て、トナー等は弾性表層7aから分離し、クリーニ
ング装置枠2の底に落下するようになる。それによって
、ガイドローラ7で搬送されたトナー等は、弾性表層7
aの表面に薄く付着して残り表面の保護効果を与えるト
ナーは別にして、殆んどがガイドローラ7から分離され
、ガイドローラ7は効率的々搬送を続けることができる
。FIG. 2 shows that the surface of the elastic surface layer 7a of the guide roller 7 transports toner etc. to the separation member 8. This shows a state in which toner etc. are separated, and toner particles adhere thinly and relatively firmly to the surface of the elastic tFJfft7a, including inside the pores, due to intermolecular forces, but the toner etc. , the electrostatic repulsion between the toner particles is also working, and the toner is lightly riding on the toner. The holes in the elastic surface layer 7a do not fill the inside uniformly with toner, etc., but rather leave a considerable space so that the toner and the like are caught and conveyed. When the hole through which toner, etc. has been conveyed in this way reaches the point IM where it is lightly pressed against the separation member 8, the edge of the hole is pressed against the separation member 8, and the shape of the ratio becomes deformed. As a result, the toner and the like that have entered the holes are thrown out as shown in the figure, and the toner and the like separate from the elastic surface layer 7a and fall to the bottom of the cleaning device frame 2. Thereby, the toner etc. conveyed by the guide roller 7 is transferred to the elastic surface layer 7.
Most of the toner is separated from the guide roller 7, and the guide roller 7 can continue to carry it efficiently, except for the toner that adheres thinly to the surface of the toner and protects the remaining surface.
本発明によれば、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、像形成体や分離部材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が得ら
れる。According to the present invention, toner and the like do not fall out or accumulate between the guide roller and the surface of the image forming member, and there is less wear and tear on the image forming member and the separation member. This provides an excellent effect of efficiently transporting toner and the like to the toner reservoir in the cleaning device frame.
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、8・・・
分離部材。
(9)
穿1図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, 8...
Separation member. (9) Diagram 1
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ル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現像剤の粒径以上で200μ
m以下の直径の孔の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 separating member that comes into contact with the guide roller and separates the developer from the guide ruler;
Place the guide roller on the surface with a particle diameter of 200 μm or more than the developer particle size.
A cleaning device characterized in that the roller has a sponge layer in which holes having a diameter of m or less 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 |
---|---|---|---|
JP58141949A JPH0634134B2 (en) | 1983-08-04 | 1983-08-04 | Cleaning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58141949A JPH0634134B2 (en) | 1983-08-04 | 1983-08-04 | Cleaning device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6033582A true JPS6033582A (en) | 1985-02-20 |
JPH0634134B2 JPH0634134B2 (en) | 1994-05-02 |
Family
ID=15303875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58141949A Expired - Lifetime JPH0634134B2 (en) | 1983-08-04 | 1983-08-04 | Cleaning device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0634134B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5220391A (en) * | 1990-07-16 | 1993-06-15 | Minolta Camera Kabushiki Kaisha | Image forming apporating having cleaning roller rotatable at different speeds during periods of image formation and non-image formation |
JP2007140375A (en) * | 2005-11-22 | 2007-06-07 | Fuji Xerox Co Ltd | Cleaning apparatus and image forming apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49105127U (en) * | 1972-12-19 | 1974-09-09 | ||
JPS5320933A (en) * | 1976-08-11 | 1978-02-25 | Ricoh Co Ltd | Cleaning device for photo-sensitive body |
JPS56121067A (en) * | 1980-02-29 | 1981-09-22 | Fuji Xerox Co Ltd | Toner supplier of electronic copying machine |
JPS5719773A (en) * | 1981-05-14 | 1982-02-02 | Toshiba Corp | Cleaning device |
-
1983
- 1983-08-04 JP JP58141949A patent/JPH0634134B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49105127U (en) * | 1972-12-19 | 1974-09-09 | ||
JPS5320933A (en) * | 1976-08-11 | 1978-02-25 | Ricoh Co Ltd | Cleaning device for photo-sensitive body |
JPS56121067A (en) * | 1980-02-29 | 1981-09-22 | Fuji Xerox Co Ltd | Toner supplier of electronic copying machine |
JPS5719773A (en) * | 1981-05-14 | 1982-02-02 | Toshiba Corp | Cleaning device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5220391A (en) * | 1990-07-16 | 1993-06-15 | Minolta Camera Kabushiki Kaisha | Image forming apporating having cleaning roller rotatable at different speeds during periods of image formation and non-image formation |
JP2007140375A (en) * | 2005-11-22 | 2007-06-07 | Fuji Xerox Co Ltd | Cleaning apparatus and image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0634134B2 (en) | 1994-05-02 |
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