JPS63147181A - Cleaning blade and its manufacture - Google Patents
Cleaning blade and its manufactureInfo
- Publication number
- JPS63147181A JPS63147181A JP29412186A JP29412186A JPS63147181A JP S63147181 A JPS63147181 A JP S63147181A JP 29412186 A JP29412186 A JP 29412186A JP 29412186 A JP29412186 A JP 29412186A JP S63147181 A JPS63147181 A JP S63147181A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- plate
- blade
- mold
- molds
- 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 36
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000000465 moulding Methods 0.000 claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000012778 molding material Substances 0.000 claims description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 abstract description 14
- 239000003831 antifriction material Substances 0.000 abstract description 10
- 239000000843 powder Substances 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000006082 mold release agent Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012546 transfer 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電子写真複写機等の感光ドラム上に残留する
トナーを除去するクリーニングブレードおよびその製法
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 for removing toner remaining on a photosensitive drum of an electrophotographic copying machine, etc., and a method for manufacturing the cleaning blade.
電子写真複写機は、光導電体表面層付の感光ドラムを備
え、この感光ドラムの外周面を一様に帯電させ、ついで
被複写体の被複写像を介してその外周面を露光すること
により上記外周面上に静電潜像を形成し、この静電潜像
にトナーを付着させてトナー像を形成し、これを複写紙
等に転写することにより複写を行うものである。そして
１．上記複写後、感光ドラムの外周面上にトナーが残留
するため、この残留帯電トナーの除去の必要が生じ、こ
の除去をクリーニングブレードによって行っている。こ
のクリーニングブレードを第１Ｏ図に示す。図において
、１はクリーニングブレードで、フランジ２付の金属製
板状保持材３の先端に、厚肉板状の軟質ウレタン樹脂製
ブレード部材４を長さ方向を合わせて取着し、上記板状
保持材３の先端部をブレード部材４中に埋設して構成さ
れている。このクリーニングブレード１は、第１）図に
示すようにそのブレード部材４のブレード側を、矢印方
向に回転する感光ドラム５に圧接し、−板面Ａの下側領
域を感光ドラム５に摺接させて残留トナー（図示せず）
を掻き落とす。この種のクリーニングブレードは、一般
に、軟質ウレタン樹脂製ブレード部材４を注型成形する
ためのキャビティを備えた左右二つ割りの成形金型を用
い、その成形金型の上記キャビティ内に板状保持材３の
先端部を挿入し、その状態で軟質ウレタン樹脂用成形材
料を上記キャビティ内に注入して成形し、ついで脱型す
ることにより製造されている。このようにして得られた
クリーニングブレードは、第１）図に示すような状態で
使用されるのであるが、その際、ブレード部材４と感光
ドラム５表面との摩擦力が問題となる。すなわち、上記
両者間の摩擦抵抗が大きくなると、その摩擦抵抗に抗し
て感光ドラム５を回転させる必要があるため、駆動モー
タ（図示せず）の出力を大きくする必要が生じ、また、
上記摩擦抵抗によって感光ドラム５表面が摩耗ないしは
損傷し、複写像の画質の低下現象が生じるようになる。An electrophotographic copying machine is equipped with a photosensitive drum having a photoconductor surface layer, and the outer circumferential surface of the photosensitive drum is uniformly charged, and then the outer circumferential surface is exposed to light through the image of the object to be copied. Copying is performed by forming an electrostatic latent image on the outer circumferential surface, applying toner to the electrostatic latent image to form a toner image, and transferring this to copy paper or the like. And 1. After the copying, toner remains on the outer peripheral surface of the photosensitive drum, so it is necessary to remove this residual charged toner, and this removal is performed using a cleaning blade. This cleaning blade is shown in FIG. 1O. In the figure, reference numeral 1 denotes a cleaning blade, and a thick plate-shaped blade member 4 made of soft urethane resin is attached to the tip of a metal plate-shaped holding member 3 with a flange 2, with the length direction aligned. The tip of the holding material 3 is embedded in the blade member 4. This cleaning blade 1 has the blade side of the blade member 4 pressed against the photosensitive drum 5 rotating in the direction of the arrow as shown in FIG. Remove residual toner (not shown)
scrape off. This type of cleaning blade generally uses a molding mold that is split into left and right halves and has a cavity for casting the blade member 4 made of soft urethane resin, and a plate-shaped holding material 3 is placed in the cavity of the molding mold. In this state, a molding material for a soft urethane resin is injected into the cavity, molded, and then removed from the mold. The cleaning blade thus obtained is used in the state shown in FIG. That is, when the frictional resistance between the two increases, it is necessary to rotate the photosensitive drum 5 against the frictional resistance, and therefore it becomes necessary to increase the output of the drive motor (not shown).
The surface of the photosensitive drum 5 is worn or damaged by the frictional resistance, resulting in a decrease in the quality of the copied image.
そのため、従来は、感光ドラム５に圧接するブレード部
材４の一板面Ａ（第１）図参照）およびそれに隣接する
端面Ｂに対応する成形金型の金型面を鏡面加工し、上記
−板面Ａおよび端面Ｂを平滑面に仕上げるようにしてい
た。しかしながら、このようにすることは、成形金型の
コストの上昇を招いてクリーニングブレードのコストの
上昇原因となるばかりでなく、上記鏡面を常時良好な状
態に保つための煩雑なメンテナンス作業を必要とし、さ
らに鏡面悪化の大きな要因となる離型剤の使用に制約を
受けるという製造上の問題も生じていた。Therefore, conventionally, the mold surfaces of the molding die corresponding to the one plate surface A (see FIG. 1) of the blade member 4 that comes into pressure contact with the photosensitive drum 5 and the end surface B adjacent thereto are mirror-finished, and the above-mentioned plate Surface A and end surface B were finished to be smooth. However, doing so not only causes an increase in the cost of the molding die and the cleaning blade, but also requires complicated maintenance work to keep the mirror surface in good condition at all times. Furthermore, there was a manufacturing problem in that there were restrictions on the use of mold release agents, which were a major factor in deteriorating the mirror surface.
本発明は、このような事情に鑑みなされたもので、感光
ドラムとの摩擦抵抗が小さく、充分な清掃効果を有し、
安価で製造の容易なりリーニングブレードの提供を目的
とする。The present invention was made in view of the above circumstances, and has low frictional resistance with the photosensitive drum, a sufficient cleaning effect,
The purpose is to provide a leaning blade that is inexpensive and easy to manufacture.
上記の目的を達成するため、本発明は、一端側が感光ド
ラムの表面に摺接して清掃する板状軟質ブレード部材と
、上記板状軟質ブレード部材の他端の端面部にそれ自身
の一端側が埋設され一体化されている板状保持材を備え
、上記板状軟質ブレード部材の一板面が切断により形成
され、この−板面に、減摩剤粒子の切断面が複数個分布
露呈しているクリーニングブレードを第１の要旨とし、
複数個の板状軟質ブレード部材が相互の板面を接して一
体となった状態で形成されうるキャビティを備えた成形
金型を準備する工程と、上記キャビティ内に板状軟質ブ
レード部材用成形材料を注入して成形する工程と、得ら
れた成形体を複数個の板状軟質ブレード部材の板面接合
部から切断する工程を備えるクリーニングブレードの製
法を第２の要旨とする。In order to achieve the above object, the present invention provides a plate-like soft blade member whose one end side slides on the surface of a photosensitive drum for cleaning, and one end side of which is embedded in the end surface of the other end of the plate-like soft blade member. One plate surface of the plate-shaped soft blade member is formed by cutting, and a plurality of cut surfaces of anti-friction particles are distributed and exposed on this plate surface. The cleaning blade is the first gist,
A step of preparing a molding die having a cavity in which a plurality of plate-shaped soft blade members are integrally formed with their plate surfaces in contact with each other, and a molding material for the plate-shaped soft blade member is placed in the cavity. The second gist is a method for manufacturing a cleaning blade, which includes a step of injecting and molding the cleaning blade, and a step of cutting the obtained molded body from the plate surface joint of a plurality of plate-shaped soft blade members.
すなわち、本発明者らは、上記のような問題を解決する
ため、上記軟質ウレタン樹脂製ブレード部材の構成原料
中にフッ素樹脂粉末等の減摩剤を添加分散させることを
試みた。しかしながら、このような減摩剤は、ベースポ
リマー中に分散するため、軟質ウレタン樹脂製ブレード
部材の表面に露呈せず、したがって、減摩剤による摩擦
抵抗の低減作用が殆ど得られなかった。そこでさらに研
究を重ねた結果、減摩剤入り原料を用い、数個分のブレ
ード部材を一体成形し、これを切断して個々のクリーニ
ングブレードをつくると、その切断面（−板面）が鏡面
仕上げ加工面とほぼ同様の平滑面になり、しかもこの平
滑面に、減摩剤粒子の切断面示露呈して摩擦係数が大幅
に低下するようになることを見いだし本発明に到達した
。That is, in order to solve the above problems, the present inventors attempted to add and disperse an anti-friction agent such as fluororesin powder into the constituent raw material of the above-mentioned soft urethane resin blade member. However, since such an anti-friction agent is dispersed in the base polymer, it is not exposed on the surface of the soft urethane resin blade member, and therefore the anti-friction agent has little effect of reducing frictional resistance. As a result of further research, we found that when several blade members were integrally molded using a raw material containing an anti-friction agent and cut into individual cleaning blades, the cut surface (-plate surface) was mirror-like. The inventors have discovered that the smooth surface is almost the same as the finished surface, and that the cut surfaces of the lubricant particles are exposed on this smooth surface, resulting in a significant reduction in the coefficient of friction, leading to the development of the present invention.
つぎに、本発明を実施例にもとづいて説明する。Next, the present invention will be explained based on examples.
第１図は本発明の一実施例の製造説明図である。図にお
いて、６は第１の型、７は第２の型、８は第３の型であ
り、８ａはスペーサとなる第４の型である。上記第１〜
第４の型６，７，８．８ａによって、２個の軟質ウレタ
ン樹脂製ブレード部材９（第２図参照）が相互の板面を
接して一体となった状態で形成されうるキャビティ１）
が形成される。２１は板状保持材である。上記第１〜第
４の型６，７．８．８ａは、それぞれ割り型であって、
成形に際して組み立てられるものであり、鏡面加工は、
ブレード部材９（第２図）の端面Ｂ（この端面Ｂは使用
に際して第１０図に示すように位置決めされる）に対応
する第３の型８の金型面Ｂ°のみになされている。FIG. 1 is a manufacturing explanatory diagram of an embodiment of the present invention. In the figure, 6 is a first type, 7 is a second type, 8 is a third type, and 8a is a fourth type that becomes a spacer. Above 1st~
A cavity 1) that can be formed by the fourth mold 6, 7, 8.8a in which two soft urethane resin blade members 9 (see Fig. 2) are integrated with their plate surfaces in contact with each other.
is formed. 21 is a plate-shaped holding material. The first to fourth molds 6, 7.8.8a are each split molds, and
It is assembled during molding, and mirror finishing is
Only the mold surface B° of the third mold 8 corresponds to the end surface B of the blade member 9 (FIG. 2) (this end surface B is positioned as shown in FIG. 10 in use).
上記の成形型を用いて、クリーニングブレードを製造す
る場合は、第４の型８ａを介して左右一対の板状保持材
２１を配置し、その状態で上記第１および第２の型６．
７の間に挟み、第１および第２の型６，７の底部に、第
３の型８を合わせて成形金型を組み立てる。ついで、上
記第１〜第４の型６，７，８．８ａで形成されるキャビ
ティｌｌ内に、減摩剤であるフッ素樹脂粉末が添加分散
されたウレタン樹脂液を注型して硬化させブレード部材
化する。ついで、脱型し、第２図に示すような、２個の
板状軟質ウレタン樹脂製ブレード部材９が相互の板面を
接して一体となった状態の成形品を得る。このようにし
て得られた成形品を、第２図の一点鎖線Ａ′で示す板面
接合部から、鋭利な切刃で切断することにより、第３図
に示すようなりリーニングブレードが得られる。この場
合、上記クリーニングブレードの軟質ウレタン樹脂製ブ
レード部材９における切断面（−板面）Ａは、鏡面仕上
げ加工面とほぼ同様の平滑面になり、かつ第４図に示す
ように、上記ウレタン樹脂液中に添加分散されたフッ素
樹脂粉末粒子１３の切断面１３ａが複数個現れている。When manufacturing a cleaning blade using the above-mentioned mold, a pair of left and right plate-shaped holding members 21 are placed through the fourth mold 8a, and in this state, the first and second molds 6.
The third mold 8 is placed between the molds 7 and the bottoms of the first and second molds 6 and 7 to assemble a molding die. Next, a urethane resin liquid in which fluororesin powder as an anti-friction agent is added and dispersed is poured into the cavities formed by the first to fourth molds 6, 7, 8.8a and cured to form a blade. Convert into parts. Then, the mold is removed to obtain a molded product in which two plate-shaped soft urethane resin blade members 9 are integrated with their plate surfaces in contact with each other, as shown in FIG. A leaning blade as shown in FIG. 3 is obtained by cutting the thus obtained molded product with a sharp cutting blade from the plate surface joint shown by the dashed line A' in FIG. In this case, the cut surface (-plate surface) A of the soft urethane resin blade member 9 of the cleaning blade becomes a smooth surface that is almost the same as the mirror-finished surface, and as shown in FIG. A plurality of cut surfaces 13a of the fluororesin powder particles 13 added and dispersed in the liquid appear.
したがって、第１）図に示すように、この切断面Ａを感
光ドラム５の外周面に圧接させると、切断面Ａの平滑さ
と、その切断面に露呈しているフッ素樹脂粉末粒子切断
面１３ａによって摩擦抵抗の大幅な低減が実現される劣
うになる。この場合、ブレード部材９の端面Ｂは、金型
の鏡面の転写により平滑面となっている。ただし、フッ
素樹脂粉末粒子切断面は現れていない。Therefore, as shown in FIG. 1), when this cut surface A is brought into pressure contact with the outer peripheral surface of the photosensitive drum 5, the smoothness of the cut surface A and the cut surface 13a of the fluororesin powder particles exposed on the cut surface result in A significant reduction in frictional resistance is achieved. In this case, the end surface B of the blade member 9 is a smooth surface due to the transfer of the mirror surface of the mold. However, the cut surface of the fluororesin powder particles does not appear.
このように、感光ドラム５の外周面に摺接するブレード
部材９の切断面Ａの摩擦抵抗が大幅に小さくなる結果、
従来と同程度の圧接力で上記ブレード部材９を感光ドラ
ム５の外周面に圧接して充分な清掃効果を得るようにし
ても、従来のような駆動モータの出力アップや感光ドラ
ム５表面の摩耗等の不都合な事態を生じない。また、成
形金型の鏡面の面積を小さくしうるため、金型のコスト
を低減させることができると同時に、メンテナンス作業
の作業量の軽減ならびに離型剤の使用の自由度の拡大効
果も得られるようになる。As a result, the frictional resistance of the cut surface A of the blade member 9 that comes into sliding contact with the outer peripheral surface of the photosensitive drum 5 is significantly reduced.
Even if a sufficient cleaning effect is obtained by pressing the blade member 9 against the outer circumferential surface of the photosensitive drum 5 with the same pressing force as in the past, the output of the drive motor will increase and the surface of the photosensitive drum 5 will wear out. Such inconvenient situations will not occur. In addition, since the area of the mirror surface of the molding die can be reduced, the cost of the mold can be reduced, and at the same time, the amount of maintenance work can be reduced and the degree of freedom in the use of mold release agents can be increased. It becomes like this.
なお、上記のように減摩剤、例えばフッ素樹脂粉末をウ
レタン樹脂液に添加分散させる場合には、ウレタン樹脂
液１００重量部に対して、減摩剤が５〜６０重量部にな
るように設定すると好結果が得られるようになるのであ
り、また、上記減摩剤としては、粒径が５μｍ以下のも
のを使用することが好適である。In addition, when adding and dispersing an antifriction agent, such as a fluororesin powder, to the urethane resin liquid as described above, the amount of antifriction agent is set to 5 to 60 parts by weight per 100 parts by weight of the urethane resin liquid. Good results can then be obtained, and it is preferable to use an anti-friction agent having a particle size of 5 μm or less.
第５図は他の実施例に用いる成形金型を示している。す
なわち、この成形金型は第１および第２の型１４．１５
ならびにスペーサとなる第３．第４の型１６．１７を用
いて構成される割り型である。そして、この成形金型は
、２個のブレード部材が相互の板面を接して一体となっ
た状態で形成されうる形成空間を２個備えたキャビティ
１８を構成し、このキャビティ１８内に減摩剤が添加分
散されたウレタン樹脂液を注型して硬化させ、成形品を
製造するようになっている。２１は板状保持材である。FIG. 5 shows a mold used in another embodiment. That is, this molding die has the first and second molds 14 and 15.
and a third one which becomes a spacer. This is a split mold constructed using the fourth mold 16 and 17. This molding die constitutes a cavity 18 having two forming spaces in which two blade members are integrally formed with their plate surfaces in contact with each other. A molded product is produced by casting and curing a urethane resin liquid in which the agent is added and dispersed. 21 is a plate-shaped holding material.
このようにして得られた成形品を第６図に示す。すなわ
ち、この成形品は、２個の軟質ウレタン樹脂製ブレード
部材９が相互の板面を接して一体となった状態のものが
上下２組設けられた形態になっており、図示の鎖線Ａ゛
およびＣで示すように、それぞれを４分割することによ
り、４個のクリーニングブレードが得られる。この場合
、鎖線Ａ″に沿う切断によって形成された切断面が第１
）図に示すように感光ドラムの外周面に摺接され一板面
Ａとなり、鎖線Ｃに沿う切断によって形成された切断面
が上記−板面Ａに隣接する端面Ｂとなる。この実施例で
は、切断によって、上記の一板面Ａおよび端面Ｂを形成
しうるため、成形金型として全く鏡面のないものを使用
することができ、金型コストの大幅な低減効果が得られ
るようになる。The molded article thus obtained is shown in FIG. That is, this molded product has two upper and lower sets of two soft urethane resin blade members 9 that are integrated with their plate surfaces in contact with each other, as shown by the chain line A' in the figure. By dividing each into four, as shown by and C, four cleaning blades are obtained. In this case, the cut surface formed by cutting along the chain line A'' is the first
) As shown in the figure, it slides into contact with the outer peripheral surface of the photosensitive drum to form a plate surface A, and the cut surface formed by cutting along the chain line C forms an end surface B adjacent to the above-mentioned plate surface A. In this example, since the above-mentioned single plate surface A and end surface B can be formed by cutting, a mold having no mirror surface at all can be used as a molding mold, and a significant reduction in mold cost can be obtained. It becomes like this.
なお、上記２個のブレード部材９が一体となった成形品
における板面接合部が長い場合には、第７図に示すよう
に、その接合部の上部を切り欠いて板面接合部の長さを
小さくし、切断の容易化を図るようにしてもよい。この
場合、切り欠き部１９を第８図のように、感光ドラム５
の外周面に向けた状態で位置決め使用されるが、切り欠
き部１９の切り欠き深さｄを小さく設定すればクリーニ
ング効果には何ら障害は生じない。In addition, if the plate surface joint part of the molded product in which the two blade members 9 are integrated is long, the upper part of the joint part is cut out to increase the length of the plate surface joint part, as shown in FIG. It may also be possible to reduce the size to facilitate cutting. In this case, as shown in FIG.
However, if the notch depth d of the notch portion 19 is set small, there will be no problem with the cleaning effect.
また、クリーニングブレードを製造する他の方法として
、第１図および第５図の成形金型から板状保持材２１挿
入部を除いて角筒状のキャビティ１）．１４をつくり、
これに成形材料を注入して成形品（第２図および第６図
のものから板状保持材２１を除いたもの）をつくる。つ
いで、得られた成形品を第２図における鎖線Ａ゛または
第６図における鎖線Ａ’ 、Ｃで切断してそれぞれ２個
または４個のブレード部材をつくり、これに接着側等で
板状保持材２１を接着することにより第９図に示すよう
なりリーニングブレードを得る方法がある。この方法も
、前記の実施例と同様の効果を奏することができる。な
お、第９図の構造のクリーニングブレードは、第１図ま
たは第５図において、ブレード部材１５の配設位置を変
えることによっても製造することができる。In addition, as another method of manufacturing a cleaning blade, a rectangular cylindrical cavity 1) is formed by removing the insertion portion of the plate-shaped holding material 21 from the molding die shown in FIGS. 1 and 5. Make 14,
A molding material is injected into this to produce a molded product (the one shown in FIGS. 2 and 6, except for the plate-shaped holding material 21). Next, the obtained molded product is cut along the chain line A'' in FIG. 2 or the chain lines A' and C in FIG. There is a method of obtaining a leaning blade as shown in FIG. 9 by gluing the material 21. This method can also produce the same effects as the above embodiment. Note that the cleaning blade having the structure shown in FIG. 9 can also be manufactured by changing the arrangement position of the blade member 15 in FIG. 1 or FIG. 5.
本発明のクリーニングブレードは、板状軟質ブレード部
材における一板面が切断により形成されていて鏡面仕上
げ加工面とほぼ同様の平滑面となり、その−板面に減摩
剤粒子の切断面が分布露呈しているため、摩擦抵抗が大
幅に小さくなっている。したがって、−板面の先端側を
感光ドラムの外周面に従来と同程度の圧接力で摺接させ
て充分な清掃効果を得るようにしても、従来のような駆
動モータの出力アップや感光ドラムの摩耗ないしは損傷
等の不都合な事態を生じない。また、本発明の方法によ
れば、複数個のブレード部材が相互の板面を接して一体
となった状態で成形し、この成形品を板面の接合部から
切断してクリーニングブレードを製造するため、切断面
が従来の鏡面仕上げ加工面とほぼ同様の平滑面になる。In the cleaning blade of the present invention, one plate surface of the plate-shaped soft blade member is formed by cutting, resulting in a smooth surface almost similar to a mirror-finished surface, and the cut surface of anti-friction particles is distributed and exposed on the plate surface. As a result, frictional resistance is significantly reduced. Therefore, even if a sufficient cleaning effect is obtained by sliding the tip end of the plate surface against the outer circumferential surface of the photosensitive drum with the same pressing force as in the past, the output of the drive motor cannot be increased or the photosensitive drum No inconvenient situations such as wear or damage will occur. Further, according to the method of the present invention, a cleaning blade is manufactured by molding a plurality of blade members into an integral state with their plate surfaces in contact with each other, and cutting this molded product from the joint of the plate surfaces. Therefore, the cut surface becomes a smooth surface that is almost the same as a conventional mirror-finished surface.
したがって、成形用金型として、鏡面が殆どないか、も
しくは全くないものを使用でき、鏡面のメンテナンス作
業の低減ないしは削除を実現できるとともに、離型剤の
使用の自由度を拡げることができる。Therefore, a mold having little or no mirror surface can be used as a molding die, reducing or eliminating maintenance work for the mirror surface, and increasing the degree of freedom in the use of a mold release agent.
そのうえ、金型のコストの低減をも実現できるようにな
る。Moreover, it is also possible to reduce the cost of the mold.
第１図は本発明の一実施例の製造説明図、第２図はそれ
によって得られた成形品の説明図、第３図はそれを切断
して得られたクリーニングブレードの説明図、第４図は
その切断面Ａの部分的拡大断面図、第５図は他の実施例
の製造説明図、第６図はそれによって得られた成形品の
説明図、第７図はさらに他の実施例によって得られた成
形品の説明図、第８図はその使用状態説明図、第９図は
さらに他の実施例で得られたクリーニングブレードの説
明図、第１０図は従来例の斜視図、第１）図はその使用
状態説明図である。
５・・・感光ドラム ９・・・ブレード部材 １３・・
・フッ素樹脂粉末粒子 １３ａ・・・その切断面 ２１
・・・板状保持材 Ａ・・・−板面Fig. 1 is an explanatory diagram of manufacturing an embodiment of the present invention, Fig. 2 is an explanatory diagram of a molded product obtained thereby, Fig. 3 is an explanatory diagram of a cleaning blade obtained by cutting the molded product, and Fig. 4 is an explanatory diagram of a cleaning blade obtained by cutting the molded product. The figure is a partially enlarged cross-sectional view of the cut plane A, FIG. 5 is a manufacturing explanatory diagram of another embodiment, FIG. 6 is an explanatory diagram of the molded product obtained thereby, and FIG. 7 is a still another embodiment. FIG. 8 is an explanatory diagram of the molded product obtained by the method, FIG. 8 is an explanatory diagram of its usage state, FIG. 9 is an explanatory diagram of a cleaning blade obtained in another example, FIG. 10 is a perspective view of a conventional example, and FIG. 1) The figure is an explanatory diagram of its usage state. 5... Photosensitive drum 9... Blade member 13...
-Fluororesin powder particles 13a...its cut surface 21
...Plate-shaped holding material A...-Plate surface
Claims (2)
状軟質ブレード部材と、それを保持する板状保持材を備
えたクリーニングブレードにおいて、上記板状軟質ブレ
ード部材の一板面が切断により形成されていることを特
徴とするクリーニングブレード。(1) In a cleaning blade that includes a plate-shaped soft blade member whose one end side slides on the surface of the photosensitive drum for cleaning, and a plate-shaped holding material that holds it, one surface of the plate-shaped soft blade member is cut. A cleaning blade characterized in that:
して一体となった状態で形成されうるキャビティを備え
た成形金型を準備する工程と、上記キャビティ内に板状
軟質ブレード部材用成形材料を注入して成形する工程と
、得られた成形体を複数個の板状軟質ブレード部材の板
面接合部から切断する工程を備えていることを特徴とす
るクリーニングブレードの製法。(2) A step of preparing a molding die having a cavity in which a plurality of plate-shaped soft blade members are integrally formed with their plate surfaces in contact with each other; 1. A method for manufacturing a cleaning blade, comprising a step of injecting a molding material for molding and molding, and a step of cutting the obtained molded body from the plate surface joint of a plurality of plate-shaped soft blade members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29412186A JPS63147181A (en) | 1986-12-10 | 1986-12-10 | Cleaning blade and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29412186A JPS63147181A (en) | 1986-12-10 | 1986-12-10 | Cleaning blade and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63147181A true JPS63147181A (en) | 1988-06-20 |
Family
ID=17803562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29412186A Pending JPS63147181A (en) | 1986-12-10 | 1986-12-10 | Cleaning blade and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63147181A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60126684A (en) * | 1983-12-14 | 1985-07-06 | Yokohama Rubber Co Ltd:The | Manufacture of blade for copying machine |
-
1986
- 1986-12-10 JP JP29412186A patent/JPS63147181A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60126684A (en) * | 1983-12-14 | 1985-07-06 | Yokohama Rubber Co Ltd:The | Manufacture of blade for copying machine |
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