JPS6358481A - Cleaning blade - Google Patents
Cleaning bladeInfo
- Publication number
- JPS6358481A JPS6358481A JP20492286A JP20492286A JPS6358481A JP S6358481 A JPS6358481 A JP S6358481A JP 20492286 A JP20492286 A JP 20492286A JP 20492286 A JP20492286 A JP 20492286A JP S6358481 A JPS6358481 A JP S6358481A
- Authority
- JP
- Japan
- Prior art keywords
- cleaned
- cleaning blade
- blade
- abutting
- damage
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000009499 grossing Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229920003225 polyurethane elastomer Polymers 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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
- G03G21/0017—Details relating to the internal structure or chemical composition of the blades
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In Electrography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、複写機やレーザービームプリンタ等の画像形
成装置に用いられるクリーニングブレードに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning blade used in image forming apparatuses such as copying machines and laser beam printers.
（従来技術とその問題点〕
従来この種の装置に用いられるクリーニングブレードは
ゴム等のエツジを用いていた。このゴムには第３図に示
す如く種々の形状、支持方法がある。第３図（ａ）は、
支持部材２に板状のゴムブレード１を挟持したものであ
って、ゴムブレード１はプレス成型や遠心成形後切断し
たものが多く被クリーニング面３、例えば像担持体や定
着ローラーヤ各種ローラーであフて、この被クリーニン
グ面３に当接する面Ａは平滑面であった。第３図（ｂ）
は、薄肉金属板（弾性体）にゴムを成形したもので、第
３図（Ｃ）は剛体にゴムを成形したもので、各々エツジ
形成面Ａ面は平滑面であった。(Prior art and its problems) Conventionally, the cleaning blade used in this type of device used an edge of rubber, etc. This rubber has various shapes and support methods as shown in Fig. 3. Fig. 3 (a) is
A plate-shaped rubber blade 1 is sandwiched between a support member 2, and the rubber blade 1 is often cut after press molding or centrifugal molding. The surface A that came into contact with the surface to be cleaned 3 was a smooth surface. Figure 3(b)
Figure 3 (C) is a thin metal plate (elastic body) molded with rubber, and Figure 3 (C) is a rigid body made of rubber, and the edge forming surface A of each was a smooth surface.
平滑面は、密着は良いが被クリーニング面と当接面Ａと
の摩擦力がそゐ密着による実質の接着面積の増大により
大きくなりステックスリップや反転が起こり、被クリー
ニング面の損傷や拭掃不足が生じる場合があった。Smooth surfaces have good adhesion, but the frictional force between the surface to be cleaned and the contact surface A increases due to the increase in the actual adhesive area due to such close contact, resulting in stick slip and reversal, resulting in damage to the surface to be cleaned and insufficient wiping. may occur.
またこれは、当接部では被クリーニング面にクリーニン
グブレードが圧接しニップを有するもので、ニップを持
たないと線接触となり、掃拭不足が起こるものである。In addition, the cleaning blade has a nip in the contact portion where the cleaning blade comes into pressure contact with the surface to be cleaned, and if the cleaning blade does not have a nip, a line contact occurs, resulting in insufficient wiping.
しかしこのニップにおいて、接触面積に応じて摩擦力が
大きくなり、これによって被クリーニング面の損傷また
はクリーニングブレードの摩耗やステックスリップを起
こしたり、場合によっては画像形成装置で使用されるト
ナーが発熱によって融解し永久付着を招（こともあった
。However, in this nip, frictional force increases depending on the contact area, which can cause damage to the surface to be cleaned, wear of the cleaning blade, stick slip, and in some cases, the toner used in the image forming device may melt due to heat generation. This sometimes led to permanent adhesion.
木発明は前述した従来技術の問題点、即ち被クリーニン
グ面とクリーニングプレートとの間におけるステップス
リップおよび過度の摩擦力発生により生ずる様々な不都
合を解決するものである。The present invention solves the problems of the prior art described above, namely the various inconveniences caused by step slip and generation of excessive frictional force between the surface to be cleaned and the cleaning plate.
［問題を解決するための構成］
本発明は前記目的を達するための為されたものであり、
以下の構成を有する。即ち、被クリーニング面に当接し
て残留する付着物を除去するクリーニングブレードであ
って、少なくとも被クリーニング面に当接する部分を粗
面成形した弾性部材であることを特徴とした、画像形成
装置に用いられるクリーニングブレードである。[Configuration for solving the problem] The present invention has been made to achieve the above object,
It has the following configuration. That is, the cleaning blade removes residual deposits by contacting the surface to be cleaned, and is characterized in that it is an elastic member having a roughened surface at least in the portion that contacts the surface to be cleaned, and is used in an image forming apparatus. It is a cleaning blade that can be used.
（実施例〕
第２図に本発明のクリーニングブレードを用いた画像形
成装置の要部概略図を示す。(Example) FIG. 2 shows a schematic diagram of the main parts of an image forming apparatus using the cleaning blade of the present invention.
３は像担持体で、ｏｐｃの光導電物質を有する感光体を
ドラム状に支持した例５屯。ドラム状像担持体３は矢印
方向に回動する。４はコロナ放電器で、像担持体表面を
一様帯電する。５は短焦点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施す。６は現像装置で、像
担持体上で光像照射に応じて形成された静電潜像を現像
する。3 is an image bearing member, which is Example 5 in which a photoreceptor having an OPC photoconductive material is supported in the form of a drum. The drum-shaped image carrier 3 rotates in the direction of the arrow. A corona discharger 4 uniformly charges the surface of the image carrier. 5 is an optical means such as a short focus optical element array, which irradiates a light image onto the image carrier. A developing device 6 develops an electrostatic latent image formed on the image carrier in response to light image irradiation.
７はタイミングローラで、不図示の給紙手段から給送さ
れる転写材８を、像担持体上の現像像と同期して転写位
置へ送り込む働きをする。９は転写材案内ガイド、１０
は転写コロナ放電器である。A timing roller 7 functions to send a transfer material 8 fed from a paper feeding means (not shown) to a transfer position in synchronization with the developed image on the image carrier. 9 is a transfer material guide, 10
is a transfer corona discharger.
転写材８の背面に転写コロナ放電器１０で転写コロナを
施し、転写材８への転写を成す。１１は搬送ベルトで、
転写終了後の転写材を不図示の定着手段へ導く。転写後
に像担持体３の周面に残留するトナー１２は本発明のク
リーニングブレード１を有するクリーナー１３により除
去され、クリーナー１３容器内に回収される。A transfer corona is applied to the back side of the transfer material 8 by a transfer corona discharger 10 to complete the transfer to the transfer material 8. 11 is a conveyor belt,
After the transfer is completed, the transfer material is guided to a fixing means (not shown). The toner 12 remaining on the peripheral surface of the image carrier 3 after the transfer is removed by the cleaner 13 having the cleaning blade 1 of the present invention and collected in the cleaner 13 container.
第１図に像担持体の周面に残留するトナーを除去するク
リーニングブレードを一例として説明する。第１図（ａ
）は金属や樹脂あるいはセラミックス等から成る剛体の
支持体２を第１図（ｂ）のように成形型イ、口にセット
して注入口４より液状のポリウレタンゴム素材を混合し
て注入し加熱で架橋する。この際成形形口の少なくとも
被クリーニング面に当接する部分を粗面化しておくと、
第１図（ａ）の如く、被クリーニング面に当接する側の
而Ａの被クリーニング面に当接する部分Ｂを粗面形成し
たクリーニングブレード１が得うえる。第１図（ｂ）の
如く成形形状をそのままブレードとしても良いが当接部
の進直度、エツジ精度、寸法精度を得るために、第１図
（Ｃ）の如く成形型口の全面を粗面化し、成形後第１図
（ｄ）の如く図中Ｐでカットすれば良い。FIG. 1 shows an example of a cleaning blade for removing toner remaining on the circumferential surface of an image carrier. Figure 1 (a
), a rigid support body 2 made of metal, resin, ceramics, etc. is set in the opening of the mold as shown in FIG. Crosslink with At this time, if at least the part of the mold opening that contacts the surface to be cleaned is roughened,
As shown in FIG. 1(a), a cleaning blade 1 is obtained in which a portion B of the side A that contacts the surface to be cleaned is roughened. Although the molded shape may be used as a blade as shown in Figure 1(b), in order to obtain straightness, edge accuracy, and dimensional accuracy of the contact part, the entire surface of the mold mouth is roughened as shown in Figure 1(C). After molding, it may be cut at P in the figure as shown in FIG. 1(d).
粗面Ｂの幅は当接エツジＣより２１程度でよい。これは
前述の当接ニップは０．２ｍｍ以下であるためである。The width of the rough surface B may be about 21 mm wider than the abutment edge C. This is because the aforementioned contact nip is 0.2 mm or less.
粗面度は、粗さ表示で４μ以下、好ましくは２μ以下０
．５μ以上が良い。これは電子写真装置に用いられるト
ナーで、特に転写後感光体に残留するトナーは微粉が多
く、２μ程度のトナーを除去できる値が良い。尤も実際
に当接部でニップを有するため、粗面Ｂは４μの粗さで
もトナー通過させない当接面となり得る。また０、５μ
以下であると、平滑面と大差ない面状態となってしまう
。The surface roughness is 4 μ or less, preferably 2 μ or less in terms of roughness.
．． 5μ or more is good. This is a toner used in electrophotographic devices, and in particular, the toner that remains on the photoreceptor after transfer contains a lot of fine powder, so a value that can remove about 2 μm of toner is good. However, since the contact portion actually has a nip, the rough surface B can become a contact surface that does not allow toner to pass through even if the roughness is 4 μm. Also 0.5μ
If it is less than that, the surface state will be not much different from a smooth surface.
こうして得られた粗面は接触面積が平滑面より小さく、
同じ接触圧を与えても被クリーニング面に対する密着力
または摩擦力を抑えることができ、感光体の損傷やブレ
ードの摩耗を減少できかつブレードの反転やステックス
リップが起こらず発熱によるトナーの融着などの不都合
が回避できる。The contact area of the rough surface thus obtained is smaller than that of a smooth surface,
Even if the same contact pressure is applied, the adhesion force or frictional force to the surface to be cleaned can be suppressed, reducing damage to the photoconductor and wear of the blade, and there is no blade reversal or stick slip, such as toner fusion due to heat generation. This inconvenience can be avoided.
本実施例では被クリーニング面として像担持体の周面を
採り上げたが、これに限ることはなく、定着ローラや搬
送ローラをクリーニングの対象としても良いことは勿論
である。In this embodiment, the circumferential surface of the image carrier is used as the surface to be cleaned, but the surface to be cleaned is not limited to this, and it is of course possible to clean the fixing roller and the conveyance roller.
〔発明の効果） 本発明の構成により、以下の効果が得らえる。〔Effect of the invention) The configuration of the present invention provides the following effects.
■被クリーニング面の損傷を防止できる。■Prevents damage to the surface to be cleaned.
■クリーニングブレードのステックスリップによる現像
剤の損傷を防止できる。■Prevents damage to the developer caused by stick slips on the cleaning blade.
■クリーニングブレードの摩耗を抑えらえる。■Suppresses cleaning blade wear.
■クリーニングブレードのめくれや欠損を防仝
グブレードの説明図、第２図は本発明を適用し得る画像
形成装置の要部概略図、第３図（ａ）〜（Ｃ）は従来の
クリーニングブレードとその取り付は状態を示す側面図
である。■An explanatory diagram of the blade that prevents the cleaning blade from turning over or breaking. Figure 2 is a schematic diagram of the main parts of an image forming apparatus to which the present invention can be applied. Figures 3 (a) to (C) are the conventional cleaning blade and The attachment is a side view showing the state.
１−一一一クリーニングブレード、 ２−一一一支持部材、 Ｂ−〜−−粗面。1-11 cleaning blade, 2-111 support member, B---Rough surface.
Claims (1)
クリーニングブレードであって、少なくとも被クリーニ
ング面に当接する部分を粗面成形した弾性部材であるこ
とを特徴とした、画像形成装置に用いられるクリーニン
グブレード。A cleaning blade for removing residual deposits by contacting a surface to be cleaned, the cleaning blade being an elastic member having a rough surface molded at least in the portion that contacts the surface to be cleaned, for use in an image forming apparatus. blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20492286A JPS6358481A (en) | 1986-08-29 | 1986-08-29 | Cleaning blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20492286A JPS6358481A (en) | 1986-08-29 | 1986-08-29 | Cleaning blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6358481A true JPS6358481A (en) | 1988-03-14 |
Family
ID=16498590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20492286A Pending JPS6358481A (en) | 1986-08-29 | 1986-08-29 | Cleaning blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6358481A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145724A (en) * | 1989-02-20 | 1992-09-08 | Canon Kabushiki Kaisha | Method of making a cleaning blade coated with graphite fluoride |
| JP2006337588A (en) * | 2005-05-31 | 2006-12-14 | Ricoh Co Ltd | Cleaning device and image forming apparatus |
| US10338514B2 (en) | 2014-10-31 | 2019-07-02 | Kyocera Document Solutions Inc. | Image forming apparatus, developer used thereby, and image forming method |
-
1986
- 1986-08-29 JP JP20492286A patent/JPS6358481A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145724A (en) * | 1989-02-20 | 1992-09-08 | Canon Kabushiki Kaisha | Method of making a cleaning blade coated with graphite fluoride |
| JP2006337588A (en) * | 2005-05-31 | 2006-12-14 | Ricoh Co Ltd | Cleaning device and image forming apparatus |
| US10338514B2 (en) | 2014-10-31 | 2019-07-02 | Kyocera Document Solutions Inc. | Image forming apparatus, developer used thereby, and image forming method |
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