JP2001075452A - Cleaning blade - Google Patents
Cleaning bladeInfo
- Publication number
- JP2001075452A JP2001075452A JP2000194078A JP2000194078A JP2001075452A JP 2001075452 A JP2001075452 A JP 2001075452A JP 2000194078 A JP2000194078 A JP 2000194078A JP 2000194078 A JP2000194078 A JP 2000194078A JP 2001075452 A JP2001075452 A JP 2001075452A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- main body
- cleaning blade
- support member
- blade main
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 31
- 239000012790 adhesive layer Substances 0.000 claims description 14
- 238000004080 punching Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- PAALZGOZEUHCET-UHFFFAOYSA-N 1,4-dioxecane-5,10-dione Chemical compound O=C1CCCCC(=O)OCCO1 PAALZGOZEUHCET-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Cleaning In Electrography (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、特に、電子写真用
感光体等のトナー除去のためのクリーニングプロセスに
適用される電子写真用のクリーニングブレードに関す
る。なお、電子写真感光体のクリーニングのみならず、
転写プロセスに用いる転写ドラムおよび転写ベルト、あ
るいは中間搬送ベルト等のクリーニングを目的としても
適用可能なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic cleaning blade which is applied to a cleaning process for removing toner from an electrophotographic photosensitive member or the like. In addition to cleaning the electrophotographic photosensitive member,
The present invention can also be applied for the purpose of cleaning a transfer drum and a transfer belt used for a transfer process, or an intermediate conveyance belt.
【０００２】[0002]
【従来の技術】一般に電子写真プロセスでは、電子写真
感光体あるいは転写ベルト等を繰り返し使用するために
トナーを除去するためのクリーニングブレードが用いら
れる。かかるクリーニングブレードは、ブレード本体と
支持部材とを接着してなるものであるが、ブレード本体
の剥がれ等を防止するために接着方法が提案されてい
る。2. Description of the Related Art Generally, in an electrophotographic process, a cleaning blade for removing toner is used in order to repeatedly use an electrophotographic photosensitive member or a transfer belt. Such a cleaning blade is formed by bonding a blade main body and a support member, and a bonding method has been proposed to prevent the blade main body from peeling off.
【０００３】例えば、特開昭６０−１２５６９号公報に
は、図４に示すように、支持部材１のブレード本体２と
の接着部側の端面１ａと、ブレード本体２の自由端２ａ
と固定部２ｂとの境界部２ｃとを接着剤層３で固定する
接着方法が開示されている。For example, Japanese Patent Application Laid-Open No. 60-12569 discloses an end face 1a of a supporting member 1 on the side of a bonding portion with a blade body 2 and a free end 2a of the blade body 2 as shown in FIG.
A bonding method for fixing a boundary portion 2c between the fixing portion 2b and the fixing portion 2b with an adhesive layer 3 is disclosed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述し
た接着方法は剥がれ防止という観点からは好ましいが、
ブレード本体にへたりが生じやすいという問題がある。However, the above-mentioned bonding method is preferable from the viewpoint of preventing peeling,
There is a problem that the blade body is apt to set.
【０００５】通常、へたりの問題はブレード本体の材質
で改善するものであるが、同材質のブレード本体を用い
ても接着方法によってへたりが生じ易い場合と生じにく
い場合とがあることがわかった。[0005] Usually, the problem of sag is improved by the material of the blade body, but it has been found that even if a blade body of the same material is used, there is a case where sag easily occurs and a case where it does not easily occur due to the bonding method. Was.
【０００６】本発明はこのような事情に鑑み、ブレード
本体の材質に拘わらずへたりが生じ難いクリーニングブ
レードを提供することを課題とする。[0006] In view of such circumstances, it is an object of the present invention to provide a cleaning blade that is unlikely to set, regardless of the material of the blade body.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に検討した結果、接着剤層の膜厚の不均一さによりへた
りが生じやすくなることを知見し、本発明に到達した。As a result of investigations for solving the above problems, it has been found that setting is likely to occur due to unevenness of the thickness of the adhesive layer, and the present invention has been reached.
【０００８】すなわち、本発明は、トナー付着体上のト
ナーを除去するブレード本体と、これの一端部に接着層
を介して接着される支持部材とを具備するクリーニング
ブレードにおいて、前記支持部材の前記ブレード本体と
の接着部の先端部の前記ブレード本体側の隅部が実質的
にＲ形状を有さず且つ当該支持部材と前記ブレード本体
との間の接着層の厚さが前記ブレード本体の自由端側か
ら固定端側に亘って実質的に略同一の厚さであることを
特徴とするクリーニングブレードにある。That is, the present invention provides a cleaning blade comprising a blade body for removing toner on a toner adhering body and a support member adhered to one end of the blade body via an adhesive layer. The corner of the tip of the bonding portion with the blade body on the blade body side does not substantially have an R shape, and the thickness of the bonding layer between the supporting member and the blade body is free of the blade body. The cleaning blade has substantially the same thickness from the end side to the fixed end side.
【０００９】ここで、前記接着層は、前記支持部材の端
部よりブレード本体の自由端側へ実質的に突出していな
いのが好ましい。Here, it is preferable that the adhesive layer does not substantially protrude from the end of the support member toward the free end of the blade body.
【００１０】また、接着層は固定端側にも実質的には突
出しないようにするのが好ましい。It is preferable that the adhesive layer does not substantially protrude toward the fixed end.
【００１１】また、前記支持部材が打ち抜き成形された
ものであり、前記ブレード本体は打ち抜き刃が当たった
側とは反対側、すなわち、いわゆるバリ側（カエリ側）
に接着されているのが好ましい。Further, the support member is formed by punching, and the blade body is on the side opposite to the side hit by the punching blade, ie, the so-called burr side (burr side).
Preferably, it is adhered to.
【００１２】本発明は、接着剤層の不均一さにより残留
応力が生じ、これによりブレード本体が変形し易く、へ
たり易くなるという知見に基づくものである。The present invention is based on the finding that residual stress is generated due to unevenness of the adhesive layer, thereby easily deforming and setting the blade body.
【００１３】かかる問題は、例えば、図５に示すよう
に、ブレード本体２側に微少なＲ形状部５ａを有する支
持部材５を用いた場合にも生じることがわかった。すな
わち、このＲ形状部５ａは意識的に設けたものではな
く、例えば、打ち抜き成形により形成されたものである
が、この場合、接着剤層６の膜厚が端部ほど徐々に厚く
なり、硬化速度の差により残留応力が生じる。よって、
ブレード本体と支持部材との間の接着剤層が端部まで略
均一な厚さとすることにより、残留応力の発生を抑え
る。本発明はこれによりへたりが生じやすいという課題
を解消する。It has been found that such a problem also occurs when, for example, as shown in FIG. 5, a support member 5 having a small R-shaped portion 5a on the blade body 2 side is used. That is, the R-shaped portion 5a is not consciously provided, but is formed, for example, by stamping. In this case, the thickness of the adhesive layer 6 gradually increases toward the end, and the Residual stress is caused by the difference in speed. Therefore,
By making the adhesive layer between the blade body and the support member have a substantially uniform thickness up to the end, the generation of residual stress is suppressed. The present invention solves the problem that sag easily occurs.
【００１４】本発明のクリーニングブレードのブレード
本体を構成するゴム材料については特に限定されない
が、例えば、ポリウレタンゴム、シリコーンゴム、ニト
リルゴム、クロロプレンゴム等が挙げられる。耐摩耗
性、永久歪及び感光体汚染の点から、特にポリウレタン
ゴムが望ましい。The rubber material constituting the blade body of the cleaning blade of the present invention is not particularly limited, and examples thereof include polyurethane rubber, silicone rubber, nitrile rubber, and chloroprene rubber. In view of abrasion resistance, permanent distortion and contamination of the photoreceptor, polyurethane rubber is particularly desirable.
【００１５】また、本発明のクリーニングブレードは、
少なくとも、感光体に当接するエッジに、例えば、フッ
素系樹脂粉体を含有するフッ素系ポリマ層等を有するよ
うにしてめくれの発生を防止するようにしてもよい。Further, the cleaning blade of the present invention comprises:
At least, for example, a fluorine-based polymer layer containing a fluorine-based resin powder may be provided at the edge in contact with the photoreceptor to prevent the occurrence of curling.
【００１６】本発明のクリーニングブレードを製造する
には、例えば、予め成型したポリウレタンシートを短冊
状に加工して、ホルダ（支持部材）に接着すればよい。In order to manufacture the cleaning blade of the present invention, for example, a preformed polyurethane sheet may be processed into a strip shape and adhered to a holder (support member).
【００１７】[0017]
【発明の実施の形態】以下、本発明を実施形態に基づい
て説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments.
【００１８】（実施例）本実施例のクリーニングブレー
ドは、図１に示すように、支持部材１０にブレード本体
２０を接着層３０を介して接着したものである。(Embodiment) As shown in FIG. 1, the cleaning blade of this embodiment has a blade body 20 adhered to a support member 10 via an adhesive layer 30.
【００１９】加熱溶解した下記ウレタンプレポリマに
１，４−ブタンジオールおよびトリメチロールプロパン
を下記配合比で混合し、予め加熱しておいた金型に注型
し、加熱硬化させた。成形後、幅１５ｍｍ、厚さ２．０
ｍｍ、長さ３１０ｍｍに切断加工したゴム弾性体をブレ
ード本体２０とした。一方、亜鉛メッキ鋼板を所定寸法
に打ち抜いて支持部材１０とした。この支持部材１０の
いわゆるバリ面側に接着剤でブレード本体２０を接着し
た。1,4-butanediol and trimethylolpropane were mixed with the following urethane prepolymer dissolved by heating at the following compounding ratio, poured into a preheated mold, and cured by heating. After molding, width 15mm, thickness 2.0
A rubber elastic body cut into a length of 310 mm and a length of 310 mm was used as the blade body 20. On the other hand, a galvanized steel sheet was punched out to a predetermined size to obtain a support member 10. The blade body 20 was bonded to the support member 10 on the so-called burr surface side with an adhesive.
【００２０】このように製造したクリーニングブレード
の接着層３０の側面側を顕微鏡で観察したところ、略均
一な厚みを有し、ブレード本体２０の自由端側に実質的
には突出していなかった。When the side surface of the adhesive layer 30 of the cleaning blade thus manufactured was observed with a microscope, the cleaning blade had a substantially uniform thickness and did not substantially protrude from the free end of the blade body 20.
【００２１】（実施例の配合） エチレンアジペート系プレポリマ １００ （Ｍｎ＝２０００、ＮＣＯ％＝６．５％） １，４−ブタンジオール ４．３ トリメチロールプロパン ２．２ （比較例）実施例と同様なゴム弾性体を同様の寸法に切
断加工してブレード本体とした。これを同様な支持部材
のいわゆる打ち抜き面側に接着して、クリーニングブレ
ードを得た。(Blending of Examples) Ethylene adipate prepolymer 100 (Mn = 2000, NCO% = 6.5%) 1,4-butanediol 4.3 Trimethylolpropane 2.2 (Comparative Example) Same as in Example A rubber elastic body was cut into the same dimensions to form a blade body. This was adhered to a so-called punched surface side of a similar support member to obtain a cleaning blade.
【００２２】このように製造したクリーニングブレード
の接着層の側面側を顕微鏡で観察したところ、図５に示
すように、ブレード本体の自由端側に向かって厚さが徐
々に大きくなっていた。When the side surface of the adhesive layer of the cleaning blade thus manufactured was observed with a microscope, the thickness gradually increased toward the free end side of the blade main body as shown in FIG.
【００２３】（へたり試験）実施例および比較例により
製造されたクリーニングブレードを、図２に示すように
支持部材１０のブレード本体接着側とは反対側を台座５
０の支持台５１に密着するように載置し、４５℃、８０
％ＲＨの温湿度条件下に７２時間放置し、台座５０の表
面の高さＨ１とブレード本体の先端部の高さＨ２との差
を測定し、初期の差からの変化量をへたりとした。それ
ぞれ５サンプルずつ測定した結果を表１及び図３に示
す。(Sag Test) The cleaning blade manufactured according to the example and the comparative example is mounted on the pedestal 5 on the side opposite to the blade body bonding side of the support member 10 as shown in FIG.
And placed at 45 ° C, 80 ° C.
% RH for 72 hours. The difference between the height H1 of the surface of the pedestal 50 and the height H2 of the tip of the blade main body was measured, and the amount of change from the initial difference was determined. . Table 1 and FIG. 3 show the results obtained by measuring five samples each.
【００２４】[0024]
【表１】 [Table 1]
【００２５】この結果より、実施例のクリーニングブレ
ードはへたりがほとんど見られず、へたりに対する耐久
性が著しく改善されたものであることが確認された。From these results, it was confirmed that the cleaning blade of the example had almost no sag and the durability against the sag was significantly improved.
【００２６】[0026]
【発明の効果】本発明に係るクリーニングブレードは、
ブレード本体の材質に拘わらずへたりが生じ難いもので
ある。According to the cleaning blade of the present invention,
Set is unlikely to occur regardless of the material of the blade body.
【図１】本発明の一実施例にかかるクリーニングブレー
ドの断面図である。FIG. 1 is a sectional view of a cleaning blade according to an embodiment of the present invention.
【図２】本発明の試験例を説明する概念図である。FIG. 2 is a conceptual diagram illustrating a test example of the present invention.
【図３】試験例の結果を示すグラフである。FIG. 3 is a graph showing the results of a test example.
【図４】従来技術にかかるクリーニングブレードの断面
図である。FIG. 4 is a sectional view of a cleaning blade according to the related art.
【図５】従来技術のクリーニングブレードの問題点を示
す概念図である。FIG. 5 is a conceptual diagram showing a problem of the cleaning blade of the related art.
１０ 支持部材 ２０ ブレード本体 ３０ 接着層 DESCRIPTION OF SYMBOLS 10 Support member 20 Blade main body 30 Adhesive layer
Claims (3)
ード本体と、これの一端部に接着層を介して接着される
支持部材とを具備するクリーニングブレードにおいて、
前記支持部材の前記ブレード本体との接着部の先端部の
前記ブレード本体側の隅部が実質的にＲ形状を有さず且
つ当該支持部材と前記ブレード本体との間の接着層の厚
さが前記ブレード本体の自由端側から固定端側に亘って
実質的に略同一の厚さであることを特徴とするクリーニ
ングブレード。1. A cleaning blade comprising: a blade main body for removing toner on a toner adhering body; and a support member bonded to one end of the blade main body via an adhesive layer.
The corner of the tip of the bonding portion of the support member with the blade body on the blade body side has substantially no R shape, and the thickness of the bonding layer between the support member and the blade body is reduced. A cleaning blade having substantially the same thickness from the free end side to the fixed end side of the blade main body.
支持部材の端部よりブレード本体の自由端側へ実質的に
突出していないことを特徴とするクリーニングブレー
ド。2. The cleaning blade according to claim 1, wherein the adhesive layer does not substantially protrude from an end of the support member toward a free end of the blade body.
が打ち抜き成形されたものであり、前記ブレード本体は
打ち抜き刃が当たった側とは反対側に接着されているこ
とを特徴とするクリーニングブレード。3. The cleaning blade according to claim 1, wherein the support member is formed by punching, and the blade body is bonded to a side opposite to a side on which the punching blade abuts. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000194078A JP3719494B2 (en) | 1999-07-01 | 2000-06-28 | Cleaning blade |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18813499 | 1999-07-01 | ||
| JP11-188134 | 1999-07-01 | ||
| JP2000194078A JP3719494B2 (en) | 1999-07-01 | 2000-06-28 | Cleaning blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001075452A true JP2001075452A (en) | 2001-03-23 |
| JP3719494B2 JP3719494B2 (en) | 2005-11-24 |
Family
ID=26504746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000194078A Expired - Lifetime JP3719494B2 (en) | 1999-07-01 | 2000-06-28 | Cleaning blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3719494B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006091614A (en) * | 2004-09-27 | 2006-04-06 | Kyocera Mita Corp | Cleaning device and image forming apparatus mounted with the same |
| US7289759B2 (en) | 2004-08-27 | 2007-10-30 | Canon Kabushiki Kaisha | Cleaning apparatus |
-
2000
- 2000-06-28 JP JP2000194078A patent/JP3719494B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7289759B2 (en) | 2004-08-27 | 2007-10-30 | Canon Kabushiki Kaisha | Cleaning apparatus |
| JP2006091614A (en) * | 2004-09-27 | 2006-04-06 | Kyocera Mita Corp | Cleaning device and image forming apparatus mounted with the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3719494B2 (en) | 2005-11-24 |
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