JPS6139080A - Cleaning mechanism of picture formation device - Google Patents
Cleaning mechanism of picture formation deviceInfo
- Publication number
- JPS6139080A JPS6139080A JP16120584A JP16120584A JPS6139080A JP S6139080 A JPS6139080 A JP S6139080A JP 16120584 A JP16120584 A JP 16120584A JP 16120584 A JP16120584 A JP 16120584A JP S6139080 A JPS6139080 A JP S6139080A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- roller
- transfer
- transfer paper
- unit body
- 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
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
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
- G03G21/1839—Means for handling the process cartridge in the apparatus body
- G03G21/1842—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks
- G03G21/185—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks the process cartridge being mounted parallel to the axis of the photosensitive member
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1672—Paper handling
Landscapes
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
(イ)産業上の利用分野
本発明は、電子複写機等の画像形成装置に係り、詳しく
は、感光体ドラム上に現像されたトナー画像を転写紙に
転写するに先立って、転写紙の画像転写面に付着してい
る紙粉等を除去するための画像形成装置のクリーニング
機構に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to an image forming apparatus such as an electronic copying machine, and more specifically, to an image forming apparatus such as an electronic copying machine, and more particularly, to an apparatus for transferring a toner image developed on a photoreceptor drum to a transfer paper. First, the present invention relates to a cleaning mechanism of an image forming apparatus for removing paper dust and the like adhering to the image transfer surface of transfer paper.
(ロ)従来の技術
電子複写機等の画像形成装置において、感光体ドラム上
に現像されたトナー画像を転写する材料としては、一般
的に転写紙が用いられている。この転写紙は繊維質から
なり、またその表面にはタルク、クレイ等の充填剤が多
く含まれているばかりか、転写紙を定形の大きさに裁断
する際に紙粉が生じるため、通常状態においても若干の
紙粉等が付着しているものであるが、複写に際して給紙
部から転写部そして定着部へと搬送されるに際して、紙
どうしの摩擦或いは搬送機構による搬送過程での摩擦動
作により、より一層多量の紙粉等が発生し、それらが転
写紙の転写面に付着する傾向にある。そのため、そのよ
うな状態の転写紙をそのまま転写に用いると、転写紙上
へのトナー画像の転写が好適に行われないばかりか、紙
粉等が感光体ドラムの感光体表面に転移、付着してしま
い、感光体ドラム上の感光体の劣化が早くなり、また感
光体ドラムのその後のクリーニングに際して上記感光体
表面に付着した紙粉等が感光体表面の残留トナーと共に
除去されてしまい、例えば上記クリーニングによって除
去した残留トナーを再び現像装置に回収して再利用する
方式のものでは、トナーの寿命が短くなるばかりか、再
利用できなくなるという欠点があった。(B) Prior Art In image forming apparatuses such as electronic copying machines, transfer paper is generally used as a material for transferring a toner image developed on a photoreceptor drum. This transfer paper is made of fibrous material, and its surface contains a lot of fillers such as talc and clay, and paper dust is generated when cutting the transfer paper into regular sizes, so under normal conditions, There is some paper dust attached to the paper, but when it is transported from the paper feed section to the transfer section and then to the fixing section during copying, it may be due to friction between the sheets or frictional movement during the transport process by the transport mechanism. , an even larger amount of paper dust is generated, and these tend to adhere to the transfer surface of the transfer paper. Therefore, if transfer paper in such a state is used as is for transfer, not only will the toner image not be transferred properly onto the transfer paper, but paper dust, etc. may transfer and adhere to the photoreceptor surface of the photoreceptor drum. As a result, the photoreceptor on the photoreceptor drum deteriorates quickly, and during subsequent cleaning of the photoreceptor drum, paper dust and the like adhering to the surface of the photoreceptor are removed together with residual toner on the surface of the photoreceptor. In the method in which the residual toner removed by the toner is collected again in the developing device and reused, there is a drawback that not only the life of the toner is shortened, but also the toner cannot be reused.
そこで、上記のような欠点を解消すべく、転写部に入る
前の転写紙から紙粉等を除去する手段として、バキュー
ム装置を用いたもの、或いは帯電させた絶縁ベルト又は
ローラによる静電吸着力を利用したもの(実公昭56−
50535号公報、特開昭53−55128号公報及び
実開昭56−159357号公報)等が、従来提案され
ている。Therefore, in order to eliminate the above-mentioned drawbacks, as a means to remove paper dust etc. from the transfer paper before it enters the transfer section, a method using a vacuum device or an electrostatic adsorption force using a charged insulated belt or roller is used. (Jikko 56-
50535, Japanese Unexamined Patent Publication No. 53-55128, and Japanese Utility Model Application No. 56-159357) have been proposed.
(7X)発明が解決しようとする問題点ところで、上記
バキューム装置を用いたもので、は、はぼ完全に転写紙
上の紙粉等を除去し得るものの、装置が大掛りなものと
なり、かつ高価なものとなる問題点を有し、また、上記
絶縁ベルト又はローラの静電吸着力を利用したものでは
、該ベルト又はローラに吸着した紙粉を除去する必要が
生じ、このためにスクレーパ、バキューム装置等の除去
手段が設けられており、同様にコスト高になるという問
題点を有していた。(7X) Problems to be Solved by the Invention By the way, although the vacuum device described above can almost completely remove paper dust, etc. from the transfer paper, the device is large-scale and expensive. In addition, in the case of using the electrostatic adsorption force of the insulating belt or roller, it is necessary to remove the paper powder adsorbed to the belt or roller, and for this purpose, scrapers and vacuums are required. A removal means such as a device is provided, which also has the problem of high cost.
(ニ)問題を解決するための手段
本発明は、上述問題点を解消することを目的とし、転写
部直前に位置し、転写紙の画像転写面に接するローラを
帯電可能に構成すると共に、該ローラを装置本体2に配
設し、また該ローラ上に吸着された転写紙の紙粉等を掻
取るための掻取り部材を該ローラに接して配設し、更に
、少なくとも感光体ドラム或いは現像装置を有し、装置
本体に対して出し入れ自在に構成されたユニット体の出
し入れに伴って、掻取り部材付近の清掃を行うようにユ
ニット体にクリーニング手段を配設したことを特徴とす
るものである。(d) Means for Solving the Problems The present invention aims to solve the above-mentioned problems by configuring a roller located immediately before the transfer section and in contact with the image transfer surface of the transfer paper to be able to be charged. A roller is disposed in the main body 2 of the apparatus, and a scraping member for scraping paper dust etc. from the transfer paper adsorbed onto the roller is disposed in contact with the roller, and furthermore, at least a photosensitive drum or a developing member is disposed. The apparatus is characterized in that a cleaning means is disposed on the unit body so as to clean the vicinity of the scraping member as the unit body is moved in and out of the apparatus main body. be.
(ネ)作用
上記手段の採用により、画像転写面にて転写紙と接する
ローラは掻取り部材との摩擦作用又は帯電手段により帯
電される。そして、感光体ドラム上に現像されたトナー
画像を転写すべく転写紙がローラを経て搬送されると、
転写紙上の紙粉等は帯電状態のローラの静電吸着作用に
より転写紙表面から除去され、該ローラ表面に転移、付
着される。こうして四−ラ表面に転移、付着された紙粉
等はローラの回転により掻取り部材に掻取られ、ローラ
表面は清浄な帯電状態に戻され、再び紙粉等を吸着すべ
く転写紙に回転接触される。そして、定期的に或いは必
要に応じて感光体ドラムを交換すべく、或いは現像装置
におけるトナーを補給すべくユニット体を装置本体から
引出すと、該ユニット体に固設されたクリーニング手段
も同時に引出されるため、掻取り部材に掻取られて掻取
り部材付近に堆積された紙粉等は装置本体下部の適当な
箇所に払い落とされ、掻取り部材付近は再び清浄な状態
に回復される。(f) Effect By employing the above means, the roller that comes into contact with the transfer paper on the image transfer surface is charged by the frictional action with the scraping member or by the charging means. Then, when the transfer paper is conveyed through rollers to transfer the developed toner image onto the photoreceptor drum,
Paper dust and the like on the transfer paper are removed from the surface of the transfer paper by the electrostatic adsorption action of the charged roller, and transferred and attached to the roller surface. In this way, the paper dust, etc. transferred and attached to the surface of the four-ra is scraped off by the scraping member as the roller rotates, and the roller surface is returned to a clean and charged state, and then rotated to the transfer paper to attract paper dust, etc. again. be contacted. When the unit body is pulled out from the main body of the apparatus periodically or as needed to replace the photosensitive drum or to replenish toner in the developing device, the cleaning means fixed to the unit body is also pulled out at the same time. Therefore, the paper dust and the like that have been scraped off by the scraping member and accumulated near the scraping member are brushed off to an appropriate location in the lower part of the device main body, and the area around the scraping member is restored to a clean state again.
(へ)実施例 以下、本発明を具体化した実施例について説明する。(f) Example Hereinafter, embodiments embodying the present invention will be described.
複写機等の画像形成装置1は、第2図に示すように、箱
状の装置本体2を有し、その上部には透明部材よりなり
矢印方向に往復動する原稿載置台3を備え、また、その
一方の側部には給紙部5を備え、更に、その他方の側部
には複写済の転写紙Pを集積するトレイ6を備えている
。そして、装置本体2の内部には、感光体ドラム7、帯
電装置9、光源10、結像素子アレイ11、現像装置1
20.転写帯電装置13、クリーナ装置14、そして定
着装[15等からなる画像形成手段と、給紙ローラ対1
6、レジストローラ対17、ガイド19そして排紙ロー
ラ対20等からなる転写紙搬送手段とが設′けられてい
る。また、レジストローラ対17は、第1図に示すよう
に、装置本体2側に設けられた駆動ローラ17aと従動
ローラ17bとで構成され、従動ローラ17bは例えば
金属芯金上に絶縁体材料であるポリアセタール樹脂を被
覆して、掻取り手段を構成するスクレーパ21の摩擦作
用により帯電し得るようになっている。そして、スクレ
ーパ21は例えば薄片状のポリエステル樹脂からなり、
その先端部を従動ローラ17bの表面に押圧するように
その基端部を弾性部材22を介して装置本体2側に固設
されていて、従動ローラ17bの表面に転移、付着した
紙粉等を掻落とすと共に、従動ローラ17bの表面を帯
電させるようになっている。更に、本実施例では、感光
体ドラム7、帯電装置9、現像装置12、そしてクリー
ナ装置14がカバ一体23内に収納され、1つのユニッ
ト体25を構成するようになっており、上記カバ一体2
3には、第2図及び第4図に示されているように、その
側部にスライド部23a、、23bが形成され、またそ
の前方部には把手部23cが付設されていて、該把手部
23cを把持して引くことにより、上記スライド部23
a、23bが装置本体2内に固設されたレール25a、
25b上を摺動して、第3図に示すように、ユニット体
25が一体となって装置本体2の内部から装置本体2の
前方に引出せるようになっている。As shown in FIG. 2, an image forming apparatus 1 such as a copying machine has a box-shaped apparatus main body 2, and on the top thereof is provided a document mounting table 3 made of a transparent member that moves back and forth in the direction of the arrow. , is provided with a paper feed section 5 on one side thereof, and further provided with a tray 6 on the other side for collecting the copied transfer sheets P. Inside the apparatus body 2, a photoreceptor drum 7, a charging device 9, a light source 10, an imaging element array 11, a developing device 1
20. An image forming means consisting of a transfer charging device 13, a cleaner device 14, a fixing device [15, etc.], and a pair of paper feed rollers 1
6, a transfer paper conveyance means consisting of a pair of registration rollers 17, a guide 19, a pair of paper discharge rollers 20, etc. are provided. Further, as shown in FIG. 1, the registration roller pair 17 is composed of a drive roller 17a and a driven roller 17b provided on the apparatus main body 2 side, and the driven roller 17b is made of an insulating material on a metal core, for example. It is coated with a certain polyacetal resin so that it can be charged by the frictional action of a scraper 21 constituting the scraping means. The scraper 21 is made of, for example, flaky polyester resin,
Its proximal end is fixed to the apparatus main body 2 side via an elastic member 22 so that its tip presses against the surface of the driven roller 17b, and the paper dust, etc. transferred and attached to the surface of the driven roller 17b is removed. At the same time as scraping off, the surface of the driven roller 17b is charged. Furthermore, in this embodiment, the photosensitive drum 7, the charging device 9, the developing device 12, and the cleaner device 14 are housed within the cover unit 23 to constitute one unit body 25, and the cover unit 23 is configured to constitute one unit body 25. 2
3, as shown in FIGS. 2 and 4, slide parts 23a, 23b are formed on the sides thereof, and a handle part 23c is attached to the front part of the slide part 23a. By grasping and pulling the portion 23c, the slide portion 23
a, 23b are fixedly installed in the device main body 2, a rail 25a;
25b, the unit body 25 can be pulled out as a whole from inside the apparatus main body 2 to the front of the apparatus main body 2, as shown in FIG.
更に、ユニット体25を構成するカバ一体23には、第
1図及び第4図に示されているように、その下方端部に
クリーニング部材26が固設されており、該クリーニン
グ部材26はウレタンフオーム等の弾性体からなる基台
26aの上にフェルト26b等が貼付され、該フェルト
26bが従動ローラ17b及びスクレーパ21の上面端
部に、基台26aの弾性力により適当な圧力で接触され
ている。また、カバ一体23の上面には露光のために結
電素子アレイ11に対向してスリット23dが形成され
ている。Furthermore, as shown in FIGS. 1 and 4, a cleaning member 26 is fixed to the lower end of the cover integral 23 constituting the unit body 25, and the cleaning member 26 is made of urethane. A felt 26b or the like is pasted on a base 26a made of an elastic body such as a foam, and the felt 26b is brought into contact with the upper end of the driven roller 17b and the scraper 21 with appropriate pressure due to the elastic force of the base 26a. There is. Furthermore, a slit 23d is formed on the upper surface of the cover unit 23 facing the electrically conductive element array 11 for exposure.
本実施例は以上のような構成よりなるので、レジストロ
ーラ対17の駆動ローラ17aが転写紙Pを搬送すべく
回転されると、該駆動ローラ17a上に当接した状態に
ある従動ローラ17bも駆動ローラ17aの回転に伴っ
て回転され、その回転による従動ローラ17b表面とス
クレーパ21先端部との摩擦作用により静電気が発生さ
れ、従動ローラ17b表面が帯電された状態となる。そ
して、感光体ドラム7上に現像されたトナー画像を転写
すべく、給紙部5から転写紙Pがレジストローラ対17
に向けて搬送され、レジストローラ対17に挾持された
状態となると、上記した帯電状態の従動ローラ17b表
面の静電吸着作用により、転写紙P上に存在する紙粉等
は転写紙P上から従動四−ラ17b表面上へと転移、付
着され、転写紙Pがレジストローラ17を通る間に転写
紙P上は紙粉等がほとんど存在しない清浄な状態となる
。こうして、転写紙P上から従動ローラ17bの表面に
転移された紙粉等は、従動ローラ17b自体の回転に基
づき、該ローラ17bと略々その全幅に亘って接するス
クレーパ21の先端部により掻取られ、スクレーパ21
の上面に堆積された状態となり、スクレーパ21を通過
した後の従動ローラ17bの表面は清浄な帯電状態に[
帰され、再び紙粉等を吸着すべく搬送されてくる転写紙
Pに回転接触される。そして、感光体ドラム7上の感光
体は定期的に或いはその性能の劣化状況に応じて交換さ
れ、また、現像装置12内に充填されているトナーは定
期的に或いはトナー切れに応じて補給されるが、それら
の交換、補給或いはその他の部分等の保守に際して、ユ
ニット体25が装置本体2内から引出されると、ユニッ
ト体25側に固設され、スクレーパ21及び従動ローラ
17bに圧接しているクリーニング部材26も同時に移
動される。そのため、クリーニング部材26の移動に伴
って装置本体2側に設けられたスクレーパ21上に堆積
された状態にある紙粉等は、スクレーバ21上から装置
本体2内部下方の支障のない箇所に払い落とされると共
に、従動ローラ17bのスクレーパ21周辺部も清掃さ
れる。Since this embodiment has the above-described configuration, when the drive roller 17a of the registration roller pair 17 is rotated to convey the transfer paper P, the driven roller 17b that is in contact with the drive roller 17a also rotates. The drive roller 17a rotates as the drive roller 17a rotates, and static electricity is generated due to friction between the surface of the driven roller 17b and the tip of the scraper 21 due to the rotation, and the surface of the driven roller 17b becomes electrically charged. Then, in order to transfer the developed toner image onto the photoreceptor drum 7, the transfer paper P is transferred from the paper feed section 5 to the registration roller pair 17.
When the transfer paper P is conveyed toward the transfer paper P and is held between the pair of registration rollers 17, the electrostatic adsorption action on the surface of the charged driven roller 17b causes the paper dust, etc. present on the transfer paper P to be removed from the transfer paper P. The transfer paper P is transferred and adhered onto the surface of the driven roller 17b, and while the transfer paper P passes through the registration rollers 17, the transfer paper P becomes in a clean state with almost no paper dust or the like present thereon. In this way, paper dust, etc. transferred from the transfer paper P to the surface of the driven roller 17b is scraped off by the tip of the scraper 21, which contacts the roller 17b over almost its entire width, based on the rotation of the driven roller 17b itself. scraper 21
After passing through the scraper 21, the surface of the driven roller 17b is in a clean and charged state.
It is returned to its original position and is brought into rotational contact with the transfer paper P that is being conveyed again to adsorb paper dust and the like. The photoreceptor on the photoreceptor drum 7 is replaced periodically or depending on the deterioration of its performance, and the toner filled in the developing device 12 is replenished periodically or when the toner runs out. However, when the unit body 25 is pulled out from the apparatus main body 2 when replacing, replenishing, or maintaining other parts, the unit body 25 is fixedly attached to the unit body 25 side and is pressed against the scraper 21 and the driven roller 17b. The cleaning member 26 that is present is also moved at the same time. Therefore, as the cleaning member 26 moves, paper powder, etc. that has accumulated on the scraper 21 provided on the device main body 2 side is brushed off from above the scraper 21 to a location below the device main body 2 where there is no problem. At the same time, the peripheral portion of the scraper 21 of the driven roller 17b is also cleaned.
次に、第5図に基づき、一部変更した実施例について説
明する。・
本実施例では、レジストローラ対17の搬送方向学前側
に樹脂ローラ27が回転自在に配設され、該樹脂ローラ
は転写紙Pに軽く当接している。また、樹脂ローラ27
に対向してコロトロン29等の帯電手段が配設され、該
コロトロン29により樹脂ローラ27が帯電される。更
に、カバ一体23の下方端部には略り字状からなる掻取
り・クリーニング部材30が固設されており、該部材3
0は弾性体からなる基台26a上にフェルト26bが貼
付されてなると共に、第5図(b)に詳示するように、
奥側端にローラ27の周方向に突出してクリーニング部
材26Mが形成され、かつ該クリーニング部材26M部
分からローラ27の幅方向に突出して掻取抄部材26N
が形成されている。Next, a partially modified embodiment will be described based on FIG. 5. - In this embodiment, a resin roller 27 is rotatably disposed on the front side of the registration roller pair 17 in the conveyance direction, and the resin roller lightly contacts the transfer paper P. In addition, the resin roller 27
A charging means such as a corotron 29 is disposed opposite to the resin roller 27, and the resin roller 27 is charged by the corotron 29. Furthermore, a scraping/cleaning member 30 having an abbreviated shape is fixed to the lower end of the cover unit 23.
0 is made up of a felt 26b pasted on a base 26a made of an elastic body, and as shown in detail in FIG. 5(b),
A cleaning member 26M is formed protruding in the circumferential direction of the roller 27 at the back end, and a scraping member 26N is formed protruding from the cleaning member 26M in the width direction of the roller 27.
is formed.
そして、掻取り部材26Nは、四、−ラ27を通過する
最大紙幅の通紙域りより広い幅に亘り該ローラ27に接
触すると共に、クリーニング部材26Mまりローラ27
の回転方向に引っ込められて、即ちクリーニング部材2
6Mがローラ27の回転軸線の垂直平面より回転方向上
流上に出張っているのに対し、掻取り部材26Nは該垂
直平面より回転方向下流側に引っ込められて配置されて
いる。Then, the scraping member 26N contacts the roller 27 over a width wider than the maximum paper passing area passing through the -ra 27, and also contacts the cleaning member 26M and the roller 27.
That is, the cleaning member 2 is retracted in the direction of rotation of the cleaning member 2.
6M protrudes upstream in the rotational direction from the vertical plane of the rotational axis of the roller 27, whereas the scraping member 26N is retracted and disposed downstream from the vertical plane in the rotational direction.
本実施例は以上のような構成よりなるので、転写紙Pの
搬送により、転写紙Pに接触して樹脂ローラ27は回転
され、コロトロン29に基づき帯電されている樹脂ロー
ラ27表面の静電吸着作用により、紙粉等は樹脂ローラ
27表面上へと転移、付着される。更に、付着された紙
粉等は樹脂ローラ27の回転により掻取り部材26Nに
掻取られ、該掻取り部材26N前部の樹脂ローラ27上
に堆積される。そして、ユニット体25が装置本体2内
から引出される際に、クリーニング部材26Mがローラ
27上を手前に接触しながら移動することにより、ロー
ラ27上に堆積されている紙粉等は装置本体2内部下方
に払い落とされる。Since this embodiment has the above-described configuration, as the transfer paper P is conveyed, the resin roller 27 is rotated in contact with the transfer paper P, and the surface of the resin roller 27, which is charged based on the corotron 29, is electrostatically attracted. Due to this action, paper dust and the like are transferred and attached to the surface of the resin roller 27. Furthermore, the adhered paper powder and the like are scraped off by the scraping member 26N by the rotation of the resin roller 27, and deposited on the resin roller 27 in front of the scraping member 26N. When the unit body 25 is pulled out from the inside of the apparatus main body 2, the cleaning member 26M moves on the roller 27 while making contact with the front, so that the paper powder etc. accumulated on the roller 27 is removed from the apparatus main body 2. It is brushed off internally downward.
なお、各実施例においては、ユニット体25は感光体ド
ラム7、帯電装置9、現像装置12及びクリーナ装置1
4をカバ一体23内に収納して構成されていたが、ユニ
ット体25には少なくとも感光体トラム7、または現像
装置12が保持されていればよい。In each embodiment, the unit body 25 includes the photosensitive drum 7, the charging device 9, the developing device 12, and the cleaner device 1.
4 is housed in the cover unit 23, however, it is sufficient that the unit body 25 holds at least the photosensitive tram 7 or the developing device 12.
また、上記スクレーパ21の清掃動作は、ユニット体2
5を引出す時に実施されるように説明したが、引出した
ユニット体25が収納される際にも清掃動作が実施され
るようにしても良く、或いはカバ一体23に開設した開
口部23dの形状を変更して、ユニット体25の引出し
時のみ或いは収納時のみに一方向的にスクレーパ21の
清掃動作がなされるようにも構成し得る。Further, the cleaning operation of the scraper 21 is performed by the unit body 2.
Although the cleaning operation has been described as being carried out when the unit body 5 is pulled out, the cleaning operation may also be carried out when the pulled out unit body 25 is stored, or the shape of the opening 23d formed in the cover body 23 may be changed. It may be modified such that the cleaning operation of the scraper 21 is performed in one direction only when the unit body 25 is pulled out or stored.
また、クリーニング部材26はウレタンフオーム等の弾
性体からなる基台26aの上にフェルト26bを貼付し
て構成したが、板バネ、スポンジ、又はモルトプレーン
等の弾性体からなる基台を使用してもよく、更に、クリ
ーニング部材26をブラシ、起毛繊維等で構成してもよ
いことは勿論である。Although the cleaning member 26 was constructed by pasting the felt 26b on a base 26a made of an elastic material such as urethane foam, it is also possible to use a base made of an elastic material such as a leaf spring, sponge, or moltoprene. Of course, the cleaning member 26 may also be constructed of a brush, raised fibers, or the like.
(ト)発明の詳細
な説明したように、本発明によれば、転写紙Pの画像転
写面に接するローラ17b、27を帯電可能に構成し、
また該ローラ上に吸着された転写紙Pの紙粉等を掻取る
ための掻取り部材21゜26Nを該ローラに接して配設
し、更に、少なくとも感光体ドラム7或いは現像装置1
2を有し、装置本体2に対して出し入れ自在に構成され
tコニニット体25の出し入れに伴って、掻取り部材2
1.26N付近の清掃を行うようにユニット体25にク
リーニング手段26.26Mを配設したので、通常の画
像形成装置1の運転時、転写部へと搬送される前の転写
紙Pから極めて簡単で低コストの機構で紙粉等を有効に
除去することができ、もって、品質の良い複写を得るこ
とができると共に、感光体ドラム7上の感光体の性能の
劣化を効果的に遅延することができ、回収して再利用さ
れるトナーの劣化をも防止することができ、また、装置
本体2からのユニット体25の出し入れに際して、簡単
で低コストの機構により自動的に掻取り部材21.26
N付近の清掃をなし得、もって何等人手を要することな
く長期間に亘り転写紙Pからの紙粉等の除去作用をバッ
クアップすることができ、更に、長期に亘る使用後、感
光体ドラム7の寿命等に合わせて、ユニット体25全体
を交換することにより、クリーニング部材26.26M
を、更にはユニット体25に配設されtこ掻取り部材2
6Nをも新しく交換できるので、クリーニング部材26
.26Mの繰返し使用した場合のクリーニング効果の低
下を未然に防止することができる。(g) As described in detail, according to the present invention, the rollers 17b and 27 in contact with the image transfer surface of the transfer paper P are configured to be able to be charged,
Further, a scraping member 21° 26N for scraping paper dust etc. from the transfer paper P adsorbed onto the roller is disposed in contact with the roller, and furthermore, at least the photosensitive drum 7 or the developing device 1
The scraping member 2 is configured to be able to be put in and taken out from the main body 2 of the device.
Since the cleaning means 26.26M is disposed in the unit body 25 so as to clean around 1.26N, it is extremely easy to clean the transfer paper P before it is conveyed to the transfer section during normal operation of the image forming apparatus 1. Paper dust and the like can be effectively removed with a low-cost mechanism, thereby making it possible to obtain high-quality copies and effectively delaying the deterioration of the performance of the photoreceptor on the photoreceptor drum 7. This makes it possible to prevent deterioration of the toner that is collected and reused.Furthermore, when the unit body 25 is taken in and out of the apparatus main body 2, the scraping member 21. is automatically removed by a simple and low-cost mechanism. 26
The area around N can be cleaned, thereby backing up the removal of paper dust etc. from the transfer paper P for a long period of time without requiring any manual labor. The cleaning member 26.26M can be replaced by replacing the entire unit body 25 according to the lifespan etc.
Furthermore, the scraping member 2 disposed on the unit body 25
6N can also be replaced with a new one, so cleaning member 26
.. It is possible to prevent the cleaning effect from decreasing when 26M is repeatedly used.
第1図は本発明に係るクリーニング機構の主要部構造を
示す部分拡大正面図、第2図は本発明のクリーニング機
構を適用し得る複写機の内部構造の概略を示す正面図、
第3図は装置本体からユニット体を引出した状態を示す
複写機の斜視図、第4図はユニット体の構造を示す図で
、(a)は斜視図、(b)は(a)の矢印方向から見た
側面図、(0)は(b)の下方から見た底面図、第5図
は本発明の他の実施例を示す図で、(a)は正面図、(
b)は平面図である。FIG. 1 is a partially enlarged front view showing the main structure of a cleaning mechanism according to the present invention, and FIG. 2 is a front view schematically showing the internal structure of a copying machine to which the cleaning mechanism of the present invention can be applied.
Fig. 3 is a perspective view of the copying machine showing the unit body pulled out from the main body of the machine, and Fig. 4 is a diagram showing the structure of the unit body, where (a) is a perspective view and (b) is an arrow shown in (a). (0) is a bottom view seen from below of (b), FIG. 5 is a diagram showing another embodiment of the present invention, (a) is a front view, (
b) is a plan view.
Claims (1)
れ、少なくとも感光体ドラム7或いは現像装置12を備
えるユニット体25を有し、感光体ドラム7上に形成さ
れた静電潜像を現像装置12により現像し、該現像され
たトナー画像を給紙部5からローラ17b、27を経て
搬送されてくる転写紙Pに転写するように構成した画像
形成装置1において、 転写紙Pの画像転写面に接するローラ17b、27を帯
電可能に構成すると共に、該ローラを装置本体2に配設
し、また、該ローラ17b、27上に吸着された転写紙
Pの紙粉等を掻取るための掻取り部材21、26Nを該
ローラに接して配設し、更に、ユニット体25の出し入
れに伴って掻取り部材21、26N付近に堆積された紙
粉等をクリーニングするようにユニット体25にクリー
ニング手段26、26Mを配設したことを特徴とする画
像形成装置におけるクリーニング機構。(1) It has a unit body 25 which is configured to be freely put in and taken out from a predetermined position in the apparatus main body 2 and includes at least the photoreceptor drum 7 or the developing device 12, and which develops the electrostatic latent image formed on the photoreceptor drum 7. In the image forming apparatus 1 configured to develop the toner image by the device 12 and transfer the developed toner image to the transfer paper P conveyed from the paper feed section 5 via the rollers 17b and 27, image transfer of the transfer paper P is performed. The rollers 17b, 27 in contact with the surface are configured to be electrically charged, and the rollers are arranged in the main body 2 of the apparatus, and a roller for scraping off paper dust etc. from the transfer paper P adsorbed onto the rollers 17b, 27 is provided. The scraping members 21 and 26N are disposed in contact with the rollers, and the unit body 25 is further cleaned to remove paper dust and the like accumulated near the scraping members 21 and 26N as the unit body 25 is taken in and out. A cleaning mechanism for an image forming apparatus, characterized in that means 26 and 26M are provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16120584A JPS6139080A (en) | 1984-07-31 | 1984-07-31 | Cleaning mechanism of picture formation device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16120584A JPS6139080A (en) | 1984-07-31 | 1984-07-31 | Cleaning mechanism of picture formation device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6139080A true JPS6139080A (en) | 1986-02-25 |
Family
ID=15730590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16120584A Pending JPS6139080A (en) | 1984-07-31 | 1984-07-31 | Cleaning mechanism of picture formation device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6139080A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6329165U (en) * | 1986-08-08 | 1988-02-25 | ||
US6415119B2 (en) * | 2000-03-27 | 2002-07-02 | Brother Kogyo Kabushiki Kaisha | Paper powder collector, process cartridge and image forming apparatus |
US6928252B2 (en) | 2002-03-29 | 2005-08-09 | Brother Kogyo Kabushiki Kaisha | Process unit and image forming apparatus having a structure to remove foreign matter |
-
1984
- 1984-07-31 JP JP16120584A patent/JPS6139080A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6329165U (en) * | 1986-08-08 | 1988-02-25 | ||
US6415119B2 (en) * | 2000-03-27 | 2002-07-02 | Brother Kogyo Kabushiki Kaisha | Paper powder collector, process cartridge and image forming apparatus |
US6928252B2 (en) | 2002-03-29 | 2005-08-09 | Brother Kogyo Kabushiki Kaisha | Process unit and image forming apparatus having a structure to remove foreign matter |
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