JPH0473596B2 - - Google Patents
Info
- Publication number
- JPH0473596B2 JPH0473596B2 JP7168383A JP7168383A JPH0473596B2 JP H0473596 B2 JPH0473596 B2 JP H0473596B2 JP 7168383 A JP7168383 A JP 7168383A JP 7168383 A JP7168383 A JP 7168383A JP H0473596 B2 JPH0473596 B2 JP H0473596B2
- Authority
- JP
- Japan
- Prior art keywords
- blade
- holding
- toner
- elastic blade
- cleaning device
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000002699 waste material Substances 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Description
【発明の詳細な説明】
本発明は電子写真複写機・記録機あるいはマイ
クロ機等の画像形成装置に用いられるブレード装
置の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a blade device used in an image forming apparatus such as an electrophotographic copying machine/recording machine or a micro machine.
電子写真装置等の画像形成装置には種々のブレ
ード装置が用いられている。例えば電子写真複写
機では、まず、ドラム周面に設けられた光導電性
の感光層に原稿と対応した光像が投影されて静電
潜像が形成され、次にこの潜像に現像剤を付着さ
せることによりトナー像が形成される。さらに転
写材が感光ドラムに圧接され、ドラム上の画像が
転写される。最後にこれが定着されてコピーがで
きあがる。転写後、ドラムはその上に残留するト
ナーがクリーニング装置によつて除去されて次の
画像形成に備える。クリーニング装置としては、
従来よりブレードクリーニング方式がある。この
方式は通常耐摩耗性のゴム材を感光体表面に圧接
させ、そのエツジで感光体表面に残留するトナー
を摩擦除去するものである。この方法に基づく装
置は構造が簡単で、コンパクトな構成としうるの
で、電子写真式複写機のクリーニング装置として
非常に有用である。 Various blade devices are used in image forming devices such as electrophotographic devices. For example, in an electrophotographic copying machine, first, an optical image corresponding to the original is projected onto a photoconductive photosensitive layer provided on the circumferential surface of the drum to form an electrostatic latent image, and then a developer is applied to this latent image. A toner image is formed by the adhesion. Furthermore, the transfer material is pressed against the photosensitive drum, and the image on the drum is transferred. Finally, this is fixed and a copy is created. After transfer, the drum is cleaned of residual toner by a cleaning device and is ready for the next image formation. As a cleaning device,
Conventionally, there is a blade cleaning method. In this method, a wear-resistant rubber material is usually brought into pressure contact with the surface of the photoreceptor, and the toner remaining on the surface of the photoreceptor is removed by friction at the edge of the rubber material. The device based on this method has a simple structure and can be made compact, so it is very useful as a cleaning device for electrophotographic copying machines.
しかしながら画像形成装置として良好な画像を
得るためには、このようなクリーニングブレード
等のブレード装置を被当接体の長手方向に対して
均等の圧力で当接させねばならず、このためブレ
ードの当接側端部のエツジ精度が要求される。 However, in order to obtain a good image as an image forming apparatus, a blade device such as a cleaning blade must be brought into contact with the object in the longitudinal direction with equal pressure, and for this reason, the contact of the blade is Edge precision at the contact end is required.
本発明はこのような問題を解決するものであ
り、この問題を解決する本発明は、弾性ブレード
と、この弾性ブレードを保持する保持部材と、を
有する画像形成装置に用いられるブレード装置の
製造方法において、前記弾性ブレードの幅方向の
両端部に前記保持部材を各々保持させる第１の工
程と、この弾性ブレードを保持部材間で長手方向
に亘つて切断する第２の工程と、を有することを
特徴とするものである。 The present invention solves such a problem, and the present invention solves this problem by providing a method for manufacturing a blade device used in an image forming apparatus having an elastic blade and a holding member that holds the elastic blade. and a second step of cutting the elastic blade in the longitudinal direction between the holding members. This is a characteristic feature.
以下図面に従つて詳細に説明する。 A detailed explanation will be given below with reference to the drawings.
第１図でブレード３の先端の位置は、ブレード
の傾きθ、傾斜方向にＹ−Ｙ、それと直角方向の
Ｘ−Ｘ座標によつて決まる。このうちＸ−Ｘ方向
は、ブレードホルダー４取り付け面６の位置精度
であるので、部品精度によつておさえることでき
る。これに対しＹ−Ｙ方向は、ホルダー４とブレ
ード３の取り付け方によつてばらつく要素が大き
い。このＹ−Ｙ方向の寸法のばらつきを押えるた
めにはホルダーとブレードのみつけ後、ブレード
の先端を切断すればよい。こうすることによつて
ブレードの位置（例えば、位置決めピンからブレ
ード先端までの距離l1、又は、ホルダーからブレ
ード先端までの自由長l2）の精度は、切断工具の
位置決め精度に置き換えることができることにな
り、±100μ程度の寸法のばらつきに押えることが
容易に達成できることになる。ここで本発明は弾
性ブレードの幅方向の両端部に保持部材を各々保
持させる第１の工程と、この弾性ブレードを保持
部材間で長手方向に亘つて切断する第２の工程
と、によりブレード装置を製造することによりブ
レードのエツジ精度を得るものである。これによ
り、これまでエツジ精度が出ないといわれていた
金型注型品のものも使うことができるようにな
り、収率を高くすることができる。さらに、第２
図に示すような切断方法ではゴムにムダ３が出る
ことになるので、本発明は第３図のように１枚の
ゴムブレード３に対し、治具上に位置決めされた
２個のホルダー４を接着等の方法で固定し、中央
部で切断するので、生産性も高まる（切断位置は
矢印で示す）。また、接着ビス締めによる固定の
他、ホルダーに対してブレードを一体的に成形す
ることも可能である（第５図）。 In FIG. 1, the position of the tip of the blade 3 is determined by the blade inclination θ, Y-Y in the inclination direction, and the X-X coordinate in the direction perpendicular to it. Among these directions, the positional accuracy of the blade holder 4 mounting surface 6 is determined in the XX direction, so it can be controlled by the accuracy of the parts. On the other hand, in the YY direction, there are large factors that vary depending on how the holder 4 and blade 3 are attached. In order to suppress this variation in dimensions in the Y-Y direction, the tip of the blade may be cut off after the holder and blade are found. By doing this, the accuracy of the blade position (for example, the distance l 1 from the positioning pin to the blade tip, or the free length l 2 from the holder to the blade tip) can be replaced by the positioning accuracy of the cutting tool. Therefore, it is possible to easily suppress the dimensional variation to about ±100μ. Here, the present invention provides a blade device that includes a first step of holding holding members at both ends of the elastic blade in the width direction, and a second step of cutting the elastic blade in the longitudinal direction between the holding members. The edge precision of the blade is obtained by manufacturing the blade. As a result, it is now possible to use mold-cast products that were previously said to have poor edge precision, and the yield can be increased. Furthermore, the second
Since the cutting method shown in the figure results in waste 3 in the rubber, the present invention uses two holders 4 positioned on a jig for one rubber blade 3 as shown in Fig. 3. Productivity is also increased because it is fixed using a method such as gluing and cut at the center (the cutting position is indicated by an arrow). In addition to fixing with adhesive screws, it is also possible to mold the blade integrally with the holder (FIG. 5).
以上の様に、本発明によれば、例えばゴムの先
端の真直度が出ていなくとも、切断によつて所望
の先端精度を得ることができる（第４図参照）。 As described above, according to the present invention, even if the tip of the rubber is not straight, the desired tip precision can be obtained by cutting (see FIG. 4).
なおクリーニング装置の詳細な説明は以下の通
りである。 Note that a detailed explanation of the cleaning device is as follows.
第１図はクリーニング器の断面図を示す。転写
工程の後に感光ドラム１表面上に残留して付着し
ているトナーは、ゴムブレード３によりかき落さ
れ、その下方に位置する例えば、厚さ75μ程度の
ポリエステルフイルムによるすくいシート７で、
容器内にためられる。このすくいシート７はドラ
ム１表面に軽く当接しており、その程度は残留ト
ナーがこのシートをくぐり抜けられる程度であ
る。 FIG. 1 shows a sectional view of the cleaning device. The toner remaining and adhering to the surface of the photosensitive drum 1 after the transfer process is scraped off by a rubber blade 3, and a scooping sheet 7 made of, for example, a polyester film with a thickness of about 75 μm is placed below the blade 3.
stored in a container. This scooping sheet 7 is in light contact with the surface of the drum 1, and the degree of contact is such that the residual toner can pass through this sheet.
このシート７のドラムへの当接によつてブレー
ド３でかき落されたトナーが容器内から外部へも
れるのを防止している。クリーニング器の下部に
ある１１は、外部へ落下したトナーの補集用の磁
石である。 This contact of the sheet 7 with the drum prevents the toner scraped off by the blade 3 from leaking from inside the container to the outside. Reference numeral 11 at the bottom of the cleaning device is a magnet for collecting toner that has fallen to the outside.
このクリーニング器は、固定した仕切板９によ
つて内部の一部が仕切られ、上記の如くブレード
３で落されたトナーは、回転するかき込み部材８
により容器の奥側の空間１０に押し込められる。
こうすることによりトナーのみかけ密度が上が
り、容器の小型化が達成できる。このかき込み部
材１０は、例えばポリエステルシートやゴムを含
浸させた布等の弾性体によつてできている。 A part of the interior of this cleaning device is partitioned by a fixed partition plate 9, and the toner dropped by the blade 3 as described above is collected by a rotating scraping member 8.
It is pushed into the space 10 on the back side of the container.
By doing so, the apparent density of the toner can be increased and the container can be made smaller. The scraping member 10 is made of an elastic body such as a polyester sheet or cloth impregnated with rubber.
第１図はクリーニング装置の断面図、第２図は
ブレードの保持および切断方法を示す図、第３
図、第４図、第５図は本発明のブレード装置の製
造方法を示す図である。
図において、３……ゴムブレード、４……ホル
ダー。
Figure 1 is a sectional view of the cleaning device, Figure 2 is a diagram showing how to hold and cut the blade, and Figure 3 is a diagram showing how to hold and cut the blade.
4 and 5 are diagrams showing a method for manufacturing a blade device according to the present invention. In the figure, 3... rubber blade, 4... holder.
Claims (1)
る保持部材と、を有する画像形成装置に用いられ
るブレード装置の製造方法において、 前記弾性ブレードの幅方向の両端部に前記保持
部材を各々保持させる第１の工程と、この弾性ブ
レードを保持部材間で長手方向に亘つて切断する
第２の工程と、を有することを特徴とする画像形
成装置に用いられるブレード装置の製造方法。[Scope of Claims] 1. A method for manufacturing a blade device used in an image forming apparatus having an elastic blade and a holding member for holding the elastic blade, further comprising the steps of: attaching the holding member to both widthwise ends of the elastic blade; A method for manufacturing a blade device used in an image forming apparatus, comprising a first step of holding each elastic blade, and a second step of cutting the elastic blade in the longitudinal direction between the holding members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7168383A JPS59197071A (en) | 1983-04-23 | 1983-04-23 | Holding method of cleaning blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7168383A JPS59197071A (en) | 1983-04-23 | 1983-04-23 | Holding method of cleaning blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59197071A JPS59197071A (en) | 1984-11-08 |
| JPH0473596B2 true JPH0473596B2 (en) | 1992-11-24 |
Family
ID=13467601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7168383A Granted JPS59197071A (en) | 1983-04-23 | 1983-04-23 | Holding method of cleaning blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59197071A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5321472A (en) * | 1990-01-24 | 1994-06-14 | Canon Kabushiki Kaisha | Charging member with a bridging electrode structure and charging device using same in an image forming apparatus |
| US5353101A (en) * | 1990-01-24 | 1994-10-04 | Canon Kabushiki Kaisha | Charging member featuring a cut edge, and charging device employing same for use in a detachable process unit in an image forming apparatus |
| JPH05265361A (en) * | 1992-06-30 | 1993-10-15 | Canon Inc | Manufacture of blade, blade device and cleaning device |
| JPH09166948A (en) * | 1995-10-13 | 1997-06-24 | Fuji Xerox Co Ltd | Method for setting position of movable member and jig therefor |
-
1983
- 1983-04-23 JP JP7168383A patent/JPS59197071A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59197071A (en) | 1984-11-08 |
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