JPH02106780A - Cleaning device for electrophotographic device - Google Patents
Cleaning device for electrophotographic deviceInfo
- Publication number
- JPH02106780A JPH02106780A JP26015788A JP26015788A JPH02106780A JP H02106780 A JPH02106780 A JP H02106780A JP 26015788 A JP26015788 A JP 26015788A JP 26015788 A JP26015788 A JP 26015788A JP H02106780 A JPH02106780 A JP H02106780A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- photoreceptor
- image forming
- cleaning device
- polyurethane
- 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 24
- 239000000463 material Substances 0.000 claims abstract description 15
- 229920002635 polyurethane Polymers 0.000 claims abstract description 12
- 239000004814 polyurethane Substances 0.000 claims abstract description 12
- 239000002033 PVDF binder Substances 0.000 claims abstract description 10
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 10
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 8
- 229910052731 fluorine Inorganic materials 0.000 claims description 8
- 239000011737 fluorine Substances 0.000 claims description 8
- 239000013013 elastic material Substances 0.000 claims description 4
- 244000145845 chattering Species 0.000 abstract description 12
- 108091008695 photoreceptors Proteins 0.000 description 38
- 230000003746 surface roughness Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 5
- 239000011368 organic material Substances 0.000 description 5
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052711 selenium Inorganic materials 0.000 description 4
- 239000011669 selenium Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 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、電子写真装置における画像担持体のクリーニ
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 for an image carrier in an electrophotographic apparatus.
従来、電子写真複写機やプリンタ等の画像担持体の表面
をクリーニングする装置として、ブレードを用いたクリ
ーニング装置がある。2. Description of the Related Art Conventionally, there has been a cleaning device using a blade as a device for cleaning the surface of an image carrier such as an electrophotographic copying machine or a printer.
たとえば複写機においては、ポリウレタン等の高分子材
料からなるブレードで回転する感光体表面を摺擦して、
感光体表面に残留するトナー等を掻き落としている。こ
のブレードは、感光体軸方向の長さが感光体の画像形成
部の幅より少し長いものを用いて、感光体表面のトナー
等の除去洩れがないようにしている。この場合、感光体
の画像形成部以外の部分では、潤滑剤の役目も果たすト
ナーが残留していないので、ブレードと感光体表面との
摩擦抵抗が大きくなる。そこで、ブレードの端部をカフ
）したうえで、該カフ）部分からのトナーの飛散を防止
するために、力ｙトしたブレード端部にポリエチレンテ
フタレートフィルムとファーブラシを組み合わせたシー
ル部材を設けたブレードも用いられている。For example, in a copying machine, a blade made of a polymeric material such as polyurethane is used to rub the surface of a rotating photoreceptor.
Scraping off toner, etc. remaining on the surface of the photoreceptor. The length of this blade in the axial direction of the photoreceptor is slightly longer than the width of the image forming area of the photoreceptor to prevent omission of removal of toner, etc. from the surface of the photoreceptor. In this case, since there is no toner remaining on the photoreceptor other than the image forming area, which also serves as a lubricant, the frictional resistance between the blade and the surface of the photoreceptor increases. Therefore, after cuffing the end of the blade, a sealing member made of a combination of polyethylene terephthalate film and a fur brush was installed at the end of the blade, which had been tightened, in order to prevent the toner from scattering from the cuff. Blades are also used.
一方、感光体は、無機系材質または有機系材質で形成さ
れている。無機系材質の感光体としては、セレンの蒸着
層を最上層としたもの、あるいは、このセレンの蒸着層
の上にさらにウレタン系樹脂を電荷輸送層として被覆し
たものが用いられている。また、有機系材質の感光体と
しては、たとえばポリカーボネート系樹脂等が電荷輸送
層として被覆されたものが用いられている。これら感光
体の表面粗さは、セレン系が０．６〜１．０μｍＲｚ
オーバーコートセレン系が０．４〜０．６μｍＲｚ、
有機系が約ＯＩμｍＲｚ以下である。On the other hand, the photoreceptor is made of an inorganic material or an organic material. As photoreceptors made of inorganic materials, those having a selenium vapor deposited layer as the uppermost layer, or those having the selenium vapor deposited layer further coated with a urethane resin as a charge transport layer are used. Further, as a photoreceptor made of an organic material, one coated with, for example, a polycarbonate resin or the like as a charge transport layer is used. The surface roughness of these photoreceptors is 0.6 to 1.0 μmRz for selenium-based photoreceptors.
Overcoat selenium-based 0.4-0.6μmRz,
The organic system has an OIμmRz or less.
近年では有機系材質の感光体が主流となっており、有機
系材質の感光体は生産性の優れたディッピンク法で製造
されるので、その表面粗さは前記のように０．１μ■ｎ
Ｒｚｕ下と非常に滑らかである。In recent years, photoreceptors made of organic materials have become mainstream, and since photoreceptors made of organic materials are manufactured using the dip-pink method, which has excellent productivity, their surface roughness is as low as 0.1μ■n as mentioned above.
It is very smooth under Rzu.
従来のクリーニング装置においては、感光体表面のトナ
ー等の除去洩れがないように、ブレードの感光体軸方向
の長さを感光体の画像形成部の幅より少し長いものを用
いているので、ブレード端部ではブレードと感光体表面
との摩擦抵抗が太きい。すなわち、画像形成部ではトナ
ーが残留していて、このトナーが潤滑剤の役目を果たす
ので、ブレードと感光体表面との間の摩擦抵抗は比較的
小さい。しかし、画像形成部以外の部分ではトナーが残
留していないので、ブレードと感光体表面との間の摩擦
抵抗が大きくなる。このため、ブレードの約くれが生じ
たり、ブレードのスティッキング及びスリッピングが繰
り返されるいわゆるチャタリング現象が生じ易いという
問題があった。In conventional cleaning devices, the length of the blade in the axial direction of the photoconductor is slightly longer than the width of the image forming area of the photoconductor, so that the toner etc. on the surface of the photoconductor is not omitted. At the end, the frictional resistance between the blade and the surface of the photoreceptor is large. That is, since toner remains in the image forming section and serves as a lubricant, the frictional resistance between the blade and the surface of the photoreceptor is relatively small. However, since no toner remains in areas other than the image forming area, the frictional resistance between the blade and the photoreceptor surface increases. For this reason, there has been a problem that the so-called chattering phenomenon, in which the blade becomes loose or the blade repeatedly sticks and slips, tends to occur.
また、前記ブレードの約くれを防止するためにブレード
端部にシール部材を設けた場合にあっては、クリーニン
グスペースに制約を受け、またブレードの製作費が高く
なるという問題があった。Further, in the case where a sealing member is provided at the end of the blade to prevent the blade from curling, there are problems in that the cleaning space is limited and the manufacturing cost of the blade increases.
さらに、ブレードエツジが摩耗して、クリーニング不良
を発生ずるという問題があった。Furthermore, there is a problem in that the blade edges are worn out, resulting in poor cleaning.
そこで本発明は、感光体の画像形成部以外の部分に接す
るブレード端部を摩擦係数の小さい材質で形成して、ブ
レードのめくれやチャタリングの発生及びブレードの摩
耗を防止して、ブレードの寿命を伸ばすと共に、クリー
ニング不良の発生をなくすことを目的とする。Therefore, in the present invention, the end of the blade that contacts the part other than the image forming area of the photoreceptor is made of a material with a small coefficient of friction, thereby preventing curling of the blade, chattering, and wear of the blade, thereby extending the life of the blade. The purpose is to extend the cleaning process and eliminate the occurrence of cleaning defects.
本発明のクリーニング装置は、その目的を達成するため
に、ブレードの少なくとも画像担持体の画像形成部以外
の部分と接する部分を低摩擦係数の材質で形成したこと
を特徴とする。In order to achieve the object, the cleaning device of the present invention is characterized in that at least the portion of the blade that comes into contact with a portion of the image carrier other than the image forming portion is formed of a material with a low coefficient of friction.
ここで、前記ブレードの低摩擦係数の材質で形成する部
分を、ポリフッ化ビニリデンを３０〜１００重量部充填
させたポリウレタンゴムとすることができる。また、同
部分を、ポリウレタン基材の上に含フッ素弾性体を被覆
したものとすることもできる。Here, the portion of the blade made of a material with a low coefficient of friction may be made of polyurethane rubber filled with 30 to 100 parts by weight of polyvinylidene fluoride. Alternatively, the same portion may be a polyurethane base material coated with a fluorine-containing elastic material.
本発明のクリーニング装置においては、ブレード端部を
、たとえばポリフッ化ビニリデンを充填させたポリウレ
タンゴムで形成するか、あるいは含フッ素弾性体を被覆
したものとして、ブレード端部と画像担持体表面との間
の摩擦抵抗を小さくする。なお、画像担持体の画像形成
部と接するブレード中央部分も含めてブレード全体を低
摩擦係数の材質としてもよいが、製作コストの点がら、
中央部分は常用のポリウレタンとし、端部のみを低摩擦
係数の材質とするのが経済的である。In the cleaning device of the present invention, the blade end is formed of, for example, polyurethane rubber filled with polyvinylidene fluoride, or is coated with a fluorine-containing elastic material, so that there is a gap between the blade end and the surface of the image carrier. reduce frictional resistance. Note that the entire blade, including the central portion of the blade that contacts the image forming portion of the image carrier, may be made of a material with a low coefficient of friction, but from the viewpoint of manufacturing cost,
It is economical to use commonly used polyurethane for the central portion and to use a material with a low coefficient of friction for only the ends.
以下、図面を参照しながら、実施例により本発明の特徴
を具体的に説明する。Hereinafter, the features of the present invention will be specifically explained using examples with reference to the drawings.
第１図は本発明を複写機に適用した実施例におけるクリ
ーニング装置の側面図である。FIG. 1 is a side view of a cleaning device in an embodiment in which the present invention is applied to a copying machine.
感光体１は矢印六方向に回転しており、図示しない転写
装置によって複写用紙にトナー画像を転写した後の感光
体１表面には残留トナーａが付着している。この残留ト
ナーａを感光体１表面がら除去するためにクリーニング
装置２が設けられている。クリーニング装置２には、ハ
ウジング３内に、板金４に取り付けられたブレード５が
感光体１表面に対して接触状態に設けられている。この
ブレード５の上流側にはフィルムンート６が感光体１表
面に対して接触状態に設けられている。フレード５によ
って感光体１表面がら剥離除去された残留トナーａは、
搬送オーガ７によってハウジンク３りｌに搬送される。The photoreceptor 1 rotates in six directions indicated by arrows, and residual toner a adheres to the surface of the photoreceptor 1 after a toner image has been transferred to copy paper by a transfer device (not shown). A cleaning device 2 is provided to remove this residual toner a from the surface of the photoreceptor 1. In the cleaning device 2, a blade 5 attached to a metal plate 4 is provided in a housing 3 so as to be in contact with the surface of the photoreceptor 1. On the upstream side of the blade 5, a film tunnel 6 is provided in contact with the surface of the photoreceptor 1. The residual toner a removed from the surface of the photoreceptor 1 by the flade 5 is
It is transported to the housing 31 by the transport auger 7.
第２図はブレード５の斜視図であり、第３図は同平面図
である。FIG. 2 is a perspective view of the blade 5, and FIG. 3 is a plan view thereof.
プレート５は、感光体１の画像形成部に接する中央部分
８は常用のポリウレタンで形成し、画像形成部外に接す
る端部９はポリフッ化ビニリデンを充填させたポリウレ
タンコムて形成している。The center portion 8 of the plate 5, which contacts the image forming portion of the photoreceptor 1, is made of commonly used polyurethane, and the end portion 9, which contacts the outside of the image forming portion, is made of polyurethane comb filled with polyvinylidene fluoride.
ポリフッ化ビニリデンの充填量は３０〜１００重量部、
ずなわぢ、ポリウレタン１００ に対してポリフッ化ビ
ニリデンを３０〜１００ 充填させる。ポリフッ化ビニ
リデンの充填量が３０重量部未満では、ブレード端部９
の摩擦係数が充分に低くならないので、ブレードのめく
れやチャタリングの発生を防止できない。一方、１００
重量部を超えると、ポリフッ化ビニリデンの特性が強
く現れ、ブレード端部９の弾性が低下して感光体１表面
との密着性が悪くなるので好ましくない。The filling amount of polyvinylidene fluoride is 30 to 100 parts by weight,
Zunawaji: Fill 100 parts of polyurethane with 30 to 100 parts of polyvinylidene fluoride. If the filling amount of polyvinylidene fluoride is less than 30 parts by weight, the blade end 9
Since the friction coefficient of the blade is not sufficiently low, it is not possible to prevent the blade from turning over or chattering. On the other hand, 100
If the amount exceeds 1 part by weight, the characteristics of polyvinylidene fluoride will be strongly exhibited, and the elasticity of the blade end 9 will decrease, resulting in poor adhesion to the surface of the photoreceptor 1, which is not preferable.
ポリフッ化ビニリデンを３０〜１００重量部充填させた
ポリウレタンコムは潤滑性がよいので、ブレード５の端
部９は、感光体１表面との間の摩擦抵抗が小さくなる。Since the polyurethane comb filled with 30 to 100 parts by weight of polyvinylidene fluoride has good lubricity, the frictional resistance between the end 9 of the blade 5 and the surface of the photoreceptor 1 is reduced.
本実施例では、全長３２６ｍｍのブレード５の、へ３サ
イズの用紙の幅２９７ｍｍに余裕代ＩＱｍｍを加えた長
さ３０７ｍｍ分を常用のポリウレタンで形成し、両端部
の各９．５＋ｎ＋ｎ分をポリフッ化ビニリデンを充填さ
せたポリウレタンゴムで形成している。In this example, the blade 5, which has a total length of 326 mm, is made of ordinary polyurethane for a length of 307 mm, which is the width of 297 mm for 3-size paper plus the allowance IQ mm, and 9.5 + n + n of each end is made of polyfluoride. Made of polyurethane rubber filled with vinylidene.
第４図は本発明の他の実施例におけるクリーニング装置
の側面図であり、第５図はブレードの斜視図、第６図は
同平面図である。なお、第４図において、第１図に示し
た部材等に対応するものについては同一の符番で指示し
、その詳細な説明を省略する。FIG. 4 is a side view of a cleaning device according to another embodiment of the present invention, FIG. 5 is a perspective view of the blade, and FIG. 6 is a plan view thereof. In FIG. 4, parts corresponding to those shown in FIG. 1 are indicated by the same reference numerals, and detailed explanation thereof will be omitted.
ブレード１０はチャンネル１１に設けられた溝部１４に
挟持され、チャンネル１１は板金１２でハウジング３に
装着されている。The blade 10 is held in a groove 14 provided in a channel 11, and the channel 11 is attached to the housing 3 with a metal plate 12.
ブレード１０の基材は常用のポリウレタンで形成し、画
像形成部外に接する両端Ｂ１３部分は含フッ素弾性体を
被覆している。含フッ素弾性体としては、ウレタンと反
応性を有する基を分子両端または片端にもち、側鎖にフ
ン素をもつものが好適である。本実施例では、含フッ素
弾性体の液体を溶媒中に混ぜ、その中にポリウレタンの
ブレード１０の端部１３を浸漬して被覆した。被覆厚さ
は、０２〜２μｍ程度でよい。含フッ素弾性体は潤滑性
が良好であるので、両端部Ｉ３が画像形成部外に接した
ときの摩擦抵抗が低減される。The base material of the blade 10 is made of commonly used polyurethane, and both ends B13 that contact the outside of the image forming section are covered with a fluorine-containing elastic material. As the fluorine-containing elastomer, one having a group reactive with urethane at both or one end of the molecule and having fluorine in the side chain is suitable. In this example, the liquid of the fluorine-containing elastomer was mixed in a solvent, and the end portion 13 of the polyurethane blade 10 was dipped into the mixture to coat it. The coating thickness may be about 0.2 to 2 μm. Since the fluorine-containing elastic body has good lubricity, the frictional resistance when both ends I3 come into contact with the outside of the image forming section is reduced.
上記のように、本実施例のブレード５または１０は、そ
の両端部が低摩擦係数の部材で形成されているので、両
端部が感光体の画像形成部外に接したときの摩擦抵抗は
低いものとなる。これにより、ブレードの両端部がめく
れたり、チャクリングを起こすことがなくなる。As mentioned above, both ends of the blade 5 or 10 of this embodiment are made of a material with a low coefficient of friction, so the frictional resistance is low when both ends come into contact with the outside of the image forming area of the photoreceptor. Become something. This prevents both ends of the blade from turning over or causing chuckling.
上記はブレードの改良によってブレードのめくれやチャ
タリングの発生を低減させたものであるが、これらブレ
ードの改良と併せて感光体の表面粗さを調整することに
よって、チャタリングの発生をさらに抑制することがで
きる。In the above, the occurrence of blade curling and chattering was reduced by improving the blade, but by adjusting the surface roughness of the photoreceptor in conjunction with these blade improvements, it is possible to further suppress the occurrence of chattering. can.
前述したように、従来の有機系材質の感光体の表面粗さ
は、０，１μｍＲｚ以下と非常に滑らかであり、このた
めブレードのめくれやチャタリングが発生し易い。そこ
で、ブレードとの間の摩擦抵抗が増大し過ぎない範囲で
、感光体の表面粗さを大きくすることによって、ブレー
ドのめくれやチャタリングの発生を抑制することができ
る。このための効果的な表面粗さは、０．３〜０．７
μｍＲｚである。第７図は感光体の表面粗さとブレード
の寿命（最大複写枚数）の関係の１例を示すグラフであ
る。表面粗さが０．３ μｍＲｚ未満だとブレードのめ
くれやチャタリング発生の抑制効果が小さく、ブレード
の寿命も短い。他方、表面粗さが０．７μｍＲｚ超にな
ると摩擦抵抗が増大してブレードの寿命が短くなる。As described above, the surface roughness of conventional photoreceptors made of organic materials is very smooth, 0.1 μmRz or less, and therefore blade curling and chattering are likely to occur. Therefore, by increasing the surface roughness of the photoreceptor within a range that does not excessively increase the frictional resistance between the photoreceptor and the blade, it is possible to suppress the occurrence of blade curling and chattering. The effective surface roughness for this is 0.3-0.7
μmRz. FIG. 7 is a graph showing an example of the relationship between the surface roughness of the photoreceptor and the life of the blade (maximum number of copies). If the surface roughness is less than 0.3 μmRz, the effect of suppressing blade curling and chattering will be small, and the life of the blade will be short. On the other hand, if the surface roughness exceeds 0.7 μmRz, the frictional resistance will increase and the life of the blade will be shortened.
表面粗さを０．３〜０．７ μｍＲｚに調整する手段と
しては、■常法のデインピング法により製造された感光
体の表面を、液体ホーニンク′処理により所定の表面粗
さにする、■ディッピング法により製造された感光体の
表面を、綿パフ研磨処理により所定の表面粗さにする、
■感光体支持部材の表面粗さを約１μｍＲｚとし、この
支持部材の表面に感光剤をコーティングして所定の表面
粗さにする。As means for adjusting the surface roughness to 0.3 to 0.7 μmRz, there are two methods: 1. Making the surface of a photoreceptor manufactured by the conventional deimping method have a predetermined surface roughness by liquid Honink' treatment, 2. Dipping. The surface of the photoreceptor manufactured by the method is polished to a predetermined surface roughness by cotton puff polishing treatment.
(2) The surface roughness of the photoreceptor support member is approximately 1 μmRz, and the surface of this support member is coated with a photosensitive agent to obtain a predetermined surface roughness.
このように感光体の表面粗さを０．３〜０．７ μｍＲ
ｚに調整することにって、ブレードのめくれやチャタリ
ングの発生を抑制して、ブレードの寿命をより長くする
ことができる。In this way, the surface roughness of the photoconductor can be adjusted to 0.3 to 0.7 μmR.
By adjusting to z, it is possible to suppress the occurrence of curling and chattering of the blade, thereby extending the life of the blade.
以上に説明したように、本発明のクリーニング装置にお
いては、ブレードの少なくとも画像担持体の画像形成部
以外の部分と接する部分を、たとえばポリフン化ビニリ
デンを充填させたポリウレタンゴトで形成するか、ある
いは含フッ素弾性体を被覆したものとして、ブレードと
画像担持体表面との間の摩擦抵抗を小さいものとした。As described above, in the cleaning device of the present invention, at least the portion of the blade that contacts the portion of the image carrier other than the image forming portion is formed of, for example, a polyurethane rubber filled with vinylidene polyfluoride, or The blade is coated with a fluoroelastic material to reduce the frictional resistance between the blade and the surface of the image carrier.
このため、ブレードのめくれやチャタリングを防止し、
摩耗を抑止してブレードの寿命を伸ばすことができると
共に、良好なりリーニングを行うことができる。また、
画像担持体の表面粗さを適正な範囲に調整することによ
って、上記効果をさらに向上させることができる。This prevents blade curling and chattering,
It is possible to suppress wear and extend the life of the blade, and also to perform good leaning. Also,
The above effects can be further improved by adjusting the surface roughness of the image carrier within an appropriate range.
第１図は本発明を複写機に適用した実施例におけるクリ
ーニング装置の側面図、第２図は同実施例におけるブレ
ードの斜視図、第３図は同平面図であり、第４図は本発
明の他の実施例におけるクリーニング装置の側面図、第
５図は同実施例におけるブレードの斜視図、第６図は同
平面図である。
第７図は感光体表面粗さとブレード寿命の関係の１例を
示すグラフである。
１；感光体 ２：クリーニング装置３；ハ
ウジング ４，１２：板金５．１０ニブレード
６：フイルムンート７：搬送オーガ
８：中央部
９．１３：端部 １１二チャンネル１４：溝
部FIG. 1 is a side view of a cleaning device in an embodiment in which the present invention is applied to a copying machine, FIG. 2 is a perspective view of a blade in the same embodiment, FIG. 3 is a plan view of the same, and FIG. FIG. 5 is a side view of a cleaning device in another embodiment, FIG. 5 is a perspective view of a blade in the same embodiment, and FIG. 6 is a plan view of the same. FIG. 7 is a graph showing an example of the relationship between photoreceptor surface roughness and blade life. 1; Photoreceptor 2: Cleaning device 3; Housing 4, 12: Sheet metal 5.10 blade 6: Film unit 7: Conveying auger
8: Center part 9.13: End part 11 Two channels 14: Groove part
Claims (1)
の部分と接する部分を低摩擦係数の材質で形成したこと
を特徴とする電子写真装置のクリーニング装置。 ２、前記ブレードの低摩擦係数の材質で形成する部分を
、ポリフッ化ビニリデンを３０〜１００重量部充填させ
たポリウレタンゴムで形成したことを特徴とする請求項
１記載の電子写真装置のクリーニング装置。 ３、前記ブレードの低摩擦係数の材質で形成する部分を
、ポリウレタン基材の上に含フッ素弾性体を被覆したこ
とを特徴とする請求項１記載の電子写真装置のクリーニ
ング装置。Claims: 1. A cleaning device for an electrophotographic apparatus, characterized in that at least a portion of the blade that contacts a portion of the image carrier other than the image forming portion is made of a material with a low coefficient of friction. 2. The cleaning device for an electrophotographic apparatus according to claim 1, wherein the portion of the blade made of a material with a low coefficient of friction is made of polyurethane rubber filled with 30 to 100 parts by weight of polyvinylidene fluoride. 3. The cleaning device for an electrophotographic apparatus according to claim 1, wherein the portion of the blade formed of a material with a low coefficient of friction is coated with a fluorine-containing elastic material on a polyurethane base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26015788A JPH02106780A (en) | 1988-10-14 | 1988-10-14 | Cleaning device for electrophotographic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26015788A JPH02106780A (en) | 1988-10-14 | 1988-10-14 | Cleaning device for electrophotographic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02106780A true JPH02106780A (en) | 1990-04-18 |
Family
ID=17344109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26015788A Pending JPH02106780A (en) | 1988-10-14 | 1988-10-14 | Cleaning device for electrophotographic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02106780A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7415238B2 (en) | 2004-11-01 | 2008-08-19 | Ricoh Company, Ltd. | Cleaning device, process cartridge, and image forming apparatus that include a blade that is pressed against a surface of a rotating member at a surface pressure of 2.0 MPa or more |
| US7778566B2 (en) | 2005-06-21 | 2010-08-17 | Brother Kogyo Kabushiki Kaisha | Belt cleaning device and image forming apparatus |
| US8218997B2 (en) * | 2008-05-30 | 2012-07-10 | Ricoh Company, Ltd. | Cleaning member, charging device, process cartridge, and image forming apparatus |
| US20170176921A1 (en) * | 2015-12-16 | 2017-06-22 | Lexmark International, Inc. | Cleaner assembly for removing waste toner in an electrophotographic image forming device |
| US11947303B1 (en) | 2023-01-11 | 2024-04-02 | Lexmark International, Inc. | Cleaner assembly with fabric seal for removing waste toner within an image forming device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840443A (en) * | 1971-09-23 | 1973-06-14 | ||
| JPS6148881A (en) * | 1984-08-17 | 1986-03-10 | Fuji Xerox Co Ltd | Cleaning device of electrophotographic copying machine |
-
1988
- 1988-10-14 JP JP26015788A patent/JPH02106780A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840443A (en) * | 1971-09-23 | 1973-06-14 | ||
| JPS6148881A (en) * | 1984-08-17 | 1986-03-10 | Fuji Xerox Co Ltd | Cleaning device of electrophotographic copying machine |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7415238B2 (en) | 2004-11-01 | 2008-08-19 | Ricoh Company, Ltd. | Cleaning device, process cartridge, and image forming apparatus that include a blade that is pressed against a surface of a rotating member at a surface pressure of 2.0 MPa or more |
| US8027628B2 (en) | 2004-11-01 | 2011-09-27 | Ricoh Company, Ltd. | Cleaning device, process cartridge, and image forming apparatus |
| US7778566B2 (en) | 2005-06-21 | 2010-08-17 | Brother Kogyo Kabushiki Kaisha | Belt cleaning device and image forming apparatus |
| US8218997B2 (en) * | 2008-05-30 | 2012-07-10 | Ricoh Company, Ltd. | Cleaning member, charging device, process cartridge, and image forming apparatus |
| US20170176921A1 (en) * | 2015-12-16 | 2017-06-22 | Lexmark International, Inc. | Cleaner assembly for removing waste toner in an electrophotographic image forming device |
| US10025267B2 (en) | 2015-12-16 | 2018-07-17 | Lexmark International, Inc. | Cleaner assembly for removing waste toner in an electrophotographic image forming device |
| US11947303B1 (en) | 2023-01-11 | 2024-04-02 | Lexmark International, Inc. | Cleaner assembly with fabric seal for removing waste toner within an image forming device |
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