JPH073613B2 - Development device - Google Patents
Development deviceInfo
- Publication number
- JPH073613B2 JPH073613B2 JP60206303A JP20630385A JPH073613B2 JP H073613 B2 JPH073613 B2 JP H073613B2 JP 60206303 A JP60206303 A JP 60206303A JP 20630385 A JP20630385 A JP 20630385A JP H073613 B2 JPH073613 B2 JP H073613B2
- Authority
- JP
- Japan
- Prior art keywords
- paper dust
- developer
- developing device
- dust removing
- removing brush
- 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 - Fee Related
Links
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、事務機器である静電転写複写機等の現像装置
に関するものである。TECHNICAL FIELD The present invention relates to a developing device such as an electrostatic transfer copying machine which is an office machine.
（従来の技術） 近年、静電転写複写機は、その画質の向上が著しく、解
像度，細線再現性，ハーフトーン再現力共に、一般の印
刷機に近付いて来た。しかし、潜像を紙等に転写する際
に、感光体等に付着した紙粉が現像剤に混入し、コピー
枚数が増えるとともに蓄積し、これが画像上に現われて
画質を低下する原因となっていた。(Prior Art) In recent years, an electrostatic transfer copying machine has remarkably improved in image quality, and has come close to a general printing machine in resolution, fine line reproducibility, and halftone reproducibility. However, when transferring a latent image to paper, etc., paper dust adhering to the photoconductor, etc., mixes with the developer and accumulates as the number of copies increases, which appears on the image and causes the image quality to deteriorate. It was
従来の現像装置について、第３図の要部拡大断面図によ
り説明する。従来の現像装置は、感光体１に対向する現
像容器２の開口部には磁石（図示せず）を内蔵し、時計
方向に回転して現像剤３を感光体１に運ぶマグネットロ
ール４が、現像剤３の貯溜部には２つの撹拌装置５およ
び６が、また上記のマグネットロール４の上部にこれに
吸着された現像剤３の穂立ちを一定とする規制板７が、
下部に現像処理を終った現像剤３をマグネットロール４
の表面から掻き落すスクレーパ８がそれぞれ配設されて
いる。A conventional developing device will be described with reference to FIG. In the conventional developing device, a magnet (not shown) is built in the opening of the developing container 2 facing the photoconductor 1, and a magnet roll 4 that rotates clockwise to carry the developer 3 to the photoconductor 1 is provided. Two agitating devices 5 and 6 are provided in the reservoir of the developer 3, and a regulating plate 7 for maintaining a constant spike of the developer 3 adsorbed by the magnet roll 4 is provided above the magnet roll 4.
At the bottom, the developer 3 that has been developed is magnet roll 4
Scrapers 8 that are scraped off from the surface of each are disposed.
このように構成された現像装置の動作について説明する
と、撹拌装置５および６で均一に解された現像剤３は、
時計方向に回転するマグネットロール４の表面に吸着さ
れ、規制板７の頭部でその穂立ちが均一になり感光体１
に運ばれてその潜像を現像する。現像の役目を果してマ
グネットロール４の表面に残留している現像剤３は、ス
クレーパ８で掻き落されて現像容器２の貯留部に落ち、
再び撹拌装置５および６で解されるプロセスを操り返
す。The operation of the developing device configured as described above will be described. The developer 3 uniformly dissolved by the stirring devices 5 and 6 is
It is adsorbed on the surface of the magnet roll 4 which rotates in the clockwise direction, and the ears of the regulating plate 7 become uniform, so that the photoconductor 1
Is transferred to and the latent image is developed. The developer 3 which plays the role of development and remains on the surface of the magnet roll 4 is scraped off by the scraper 8 and falls into the storage part of the developing container 2,
Again, the process understood by the stirring devices 5 and 6 is repeated.
（発明が解決しようとする問題点） しかしながら、このような構成では、現像装置に現像剤
３の中から紙粉を除去する機能がないため、給紙および
紙の搬送系に紙粉の発生を押える装置や除去する装置を
設けるしかなく、現像剤３が紙粉等で汚れた場合には全
量を交換しなくてはならないという問題があった。(Problems to be Solved by the Invention) However, in such a configuration, since the developing device does not have a function of removing paper dust from the developer 3, paper dust is not generated in the paper feeding and paper transport system. There is a problem that only a pressing device and a removing device are provided, and if the developer 3 is contaminated with paper powder or the like, the entire amount must be replaced.
本発明は上記の問題点を解決するもので、現像容器内に
紙粉除去装置を備えた現像装置を提供するものである。The present invention solves the above problems and provides a developing device including a paper dust removing device in a developing container.
（問題点を解決するための手段） 上記の問題点を解決するために、本発明は、スクレーパ
で掻き落される現像剤の流れの中に、しなやかな弾力性
に富む繊維からなる紙粉除去ブラシの先端が入るよう
に、紙粉除去ブラシを配設するものである。(Means for Solving the Problems) In order to solve the above problems, the present invention removes paper dust made of a flexible fiber having a high elasticity in the flow of the developer scraped by a scraper. The paper dust removing brush is arranged so that the tip of the brush enters.
（作用） 上記の構成により、紙粉除去ブラシの各繊維が現像剤と
摩擦して帯電し、これに現像剤の中の紙粉を吸着する。
また、紙粉以外の塵埃も同時に吸着されるので、現像剤
は現像処理と並行して清掃される。(Operation) With the above configuration, each fiber of the paper dust removing brush rubs against the developer and is charged, and the paper dust in the developer is adsorbed by the fibers.
Further, since dust other than paper powder is also adsorbed at the same time, the developer is cleaned in parallel with the developing process.
なお、紙粉除去ブラシの繊維の形状を熱プレス等であら
かじめ処理して、塑性変形し難い形状にして置けば、上
記の清掃効果を高めるとともに、持続させることができ
る。If the fiber shape of the paper dust removing brush is preliminarily treated with a hot press or the like so as to have a shape that is unlikely to be plastically deformed, the above cleaning effect can be enhanced and maintained.
（実施例） 本発明の一実施例を第１図および第２図により説明す
る。第１図は本発明による現像装置の要部拡大断面図
で、感光体１に対向する現像容器２の開口部には磁石
（図示せず）を内蔵しかつ時計方向に回転して現像剤３
を感光体１に運ぶマグネットロール４が、現像剤３の貯
留部には撹拌装置５および６が、また上記のマグネット
ロール４の下部にこれに吸着された現像剤３の穂立ちを
一定にする規制板７が、上部に現像処理を終った現像剤
３をマグネットロール４の表面から掻き落すスクレーパ
８がそれぞれ配設されている。さらに、上記のスクレー
パ８の上側の現像容器２の側壁に、フィルタ９と繊維の
束10とを固定板11に固定した紙粉除去ブラシが小ねじ12
を用いて取り付けられており、上記のフィルタ９はスク
レーパ８上を流れる現像剤３の溜り3aの表面に接し、繊
維の束10の先端は表面から数mm埋没するように調節され
ている。(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an enlarged cross-sectional view of a main part of a developing device according to the present invention. A magnet (not shown) is built in the opening of the developing container 2 facing the photoconductor 1 and the developer 3 is rotated clockwise.
A magnet roll 4 for carrying the toner to the photoconductor 1, stirring devices 5 and 6 in the reservoir of the developer 3, and a constant bristling of the developer 3 adsorbed on the lower part of the magnet roll 4 described above. A scraper 8 for scraping off the developer 3 that has finished development processing from the surface of the magnet roll 4 is provided on the upper portion of the regulation plate 7. Further, on the side wall of the developing container 2 above the scraper 8, a paper dust removing brush having a filter 9 and a fiber bundle 10 fixed to a fixing plate 11 is provided with a small screw 12.
The filter 9 is in contact with the surface of the pool 3a of the developer 3 flowing on the scraper 8 and the tip of the fiber bundle 10 is adjusted to be buried by several mm from the surface.
なお、紙粉除去ブラシの繊維10は、しなやかな弾力性に
富む繊維、好ましくは、ポリエステル，ポリアミド，ナ
イロン（登録商標名）等の高分子材料の直径１μｍない
し10μｍ程度の太さで、しなやかで弾力性を有し且つ現
像剤の流れを妨げないものである。繊維の形状は、第２
図（イ）に示す直線状のものが一般的であるが、第２図
（ロ）のように螺旋状のもの、第２図（ハ）のように波
形状のもの、あるいは第２図（ニ）のように複数本の繊
維を糸状に撚り合わせたものが使用される。繊維の束10
は、1000本/cm以上の密度を有することが望ましい。The fibers 10 of the paper dust removing brush are supple and highly elastic fibers, preferably made of a polymer material such as polyester, polyamide, nylon (registered trademark) having a diameter of about 1 μm to 10 μm, which is supple. It has elasticity and does not hinder the flow of the developer. The shape of the fiber is the second
The linear shape shown in FIG. 2B is generally used, but a spiral shape as shown in FIG. 2B, a corrugated shape as shown in FIG. As in (d), a plurality of fibers twisted into a thread shape is used. Bundles of fiber 10
Preferably has a density of 1000 lines / cm or more.
紙粉除去フィルタ９は、ポリアミド，ポリエステル等の
高分子材料の不織布状のシートまたは織布を複数枚重ね
たシートで、厚さが0.5mmないし5mm程度のものである。The paper dust removing filter 9 is a non-woven sheet made of a polymer material such as polyamide or polyester or a sheet obtained by stacking a plurality of woven cloths, and has a thickness of about 0.5 mm to 5 mm.
このように構成された現像装置の動作について説明す
る。撹拌装置５および６により均一に解された現像剤３
は、時計方向に回転するマグネットロール４の表面に吸
着され、規制板７の頭部でその穂立ちが均一になり感光
体１に運ばれて、その潜像を現像する。現像の役目を果
してマグネットロール４の表面に残留している現像剤３
は、スクレーパ８で掻き落されて、スクレーパ８の上に
落ちる。スクレーパ８で掻き落された現像剤３は、マグ
ネットロール４の磁力の影響を受けて、その一部がスク
レーパ８の上に溜り3aを形成する。The operation of the developing device thus configured will be described. Developer 3 uniformly disintegrated by stirring devices 5 and 6
Is attracted to the surface of the magnet roll 4 which rotates in the clockwise direction, the ears thereof become uniform at the head of the regulating plate 7, and is conveyed to the photoconductor 1 to develop the latent image. The developer 3 which plays the role of development and remains on the surface of the magnet roll 4.
Are scraped off by the scraper 8 and fall on the scraper 8. The developer 3 scraped off by the scraper 8 is affected by the magnetic force of the magnet roll 4, and a part thereof forms a pool 3 a on the scraper 8.
一方、紙粉除去ブラシの繊維の束10は、現像剤３と摩擦
して帯電し、現像剤３に混っている紙粉を吸着する。そ
の吸着力は、帯電量、繊維密度および繊維の形状によっ
て異なるが、質量の軽い紙粉は半恒久的に捕えることが
できる。質量の重い紙粉は、紙粉除去ブラシの繊維の束
10に流れ妨げられて、溜り3aの上面に浮き上って来る。
紙粉除去ブラシのフィルタ９は、溜り3aの上面に浮き上
った紙粉を絡み付けて、現像剤３から除去する。紙粉以
外の小さな塵埃等も、同時に清掃される。On the other hand, the fiber bundle 10 of the paper dust removing brush rubs against the developer 3 to be charged and adsorbs the paper dust mixed in the developer 3. The adsorption force varies depending on the amount of charge, the fiber density and the shape of the fiber, but paper powder with a light mass can be semi-permanently captured. Heavy paper dust is a bundle of fibers from a paper dust remover brush.
The flow is obstructed by 10, and floats up on the upper surface of the pool 3a.
The filter 9 of the paper dust removing brush entangles the paper dust floating on the upper surface of the pool 3a and removes it from the developer 3. Small dust other than paper dust is also cleaned at the same time.
紙粉除去ブラシに吸着または絡み付いた紙粉等は、小ね
じ12を緩めて紙粉除去ブラシを取り外せば、簡単に清掃
することができる。Paper dust or the like adsorbed or entangled with the paper dust removal brush can be easily cleaned by loosening the small screw 12 and removing the paper dust removal brush.
なお、本実施例では、第１図に示したように、紙粉除去
ブラシの繊維の束10は、現像剤３に流されて、その前方
に固定されたフィルタ９との間に隙間が生じ、この隙間
に溜り3aの上面に浮き上った紙粉等が捕えられてるが、
マグネットロール４が停止し、現像剤３の流れが止まる
と、繊維の束10が戻ってフィルタ９との間にできていた
隙間が閉じるため、その中に捕えられた紙粉等はそのま
ま閉じ込められて、現像剤３の中に混じることはない。In this embodiment, as shown in FIG. 1, the fiber bundle 10 of the paper dust removing brush is flowed by the developer 3 and a gap is generated between the fiber bundle 10 and the filter 9 fixed in front of the developer 3. , The paper dust etc. floating on the upper surface of the pool 3a is caught in this gap,
When the magnet roll 4 stops and the flow of the developer 3 stops, the fiber bundle 10 returns and the gap formed between the fiber bundle 10 and the filter 9 closes, so that the paper dust and the like trapped therein is trapped as it is. Therefore, it does not mix in the developer 3.
なお、実施例では、紙粉除去ブラシを単数としたが、複
数配置しても良く、また、定置式としたが、回転軸上に
設けて自動的に清掃する手段を設けてもよい。In the embodiment, the number of brushes for removing paper dust is one, but a plurality of brushes may be arranged, and although the brush is of a stationary type, it may be provided on the rotary shaft to automatically clean the brush.
また、紙粉除去ブラシの繊維の束10に弾性を有する金属
材料の繊維を用いても宜い。Further, fibers of a metal material having elasticity may be used for the fiber bundle 10 of the paper dust removing brush.
（発明の効果） 以上説明したように、本発明によれば、しなやかな繊
維、特に絶縁性の高分子材料の弾力性に富んだ繊維から
なる紙粉除去ブラシの先端を、スクレーパで掻き落した
現像剤の流れの中に埋まるように配設することによっ
て、現像剤との摩擦によって生ずる帯電を利用し、現像
剤中に混在する軽質量の紙粉や塵埃を吸着除去すること
ができる。また、紙粉除去ブラシの前側に取り付けた高
分子材料の不織布状のシートを用いたフィルタによっ
て、現像剤中に混在する重質量の紙粉や塵埃が除去でき
る。さらに、紙粉除去ブラシに捕えられた紙粉等は、こ
れを取り外して簡単に清掃することができるので、紙粉
や塵埃等で画質の低下しない優れた品質の現像装置を得
ることができる。(Effects of the Invention) As described above, according to the present invention, the tip of the paper dust removing brush made of a flexible fiber, in particular, an elastic fiber of an insulating polymer material is scraped off with a scraper. By arranging so as to be buried in the developer flow, it is possible to adsorb and remove light mass paper dust and dust mixed in the developer by utilizing the charge generated by friction with the developer. Further, a heavy-weight paper dust and dust mixed in the developer can be removed by a filter using a non-woven sheet made of a polymer material attached to the front side of the paper dust removing brush. Further, since the paper dust or the like caught by the paper dust removing brush can be easily removed and cleaned, it is possible to obtain a developing device of excellent quality in which the image quality is not deteriorated by the paper dust or dust.
第１図は本発明による現像装置の要部拡大断面図、第２
図は本発明による紙粉除去ブラシに用いられる繊維の形
状を示す外観図、第３図は従来の現像装置の要部拡大断
面図である。 １……感光体、２……現像容器、３……現像剤、3a……
溜り、４……マグネットロール、5,6……撹拌装置、７
……規制板、８……スクレーパ、９……紙粉除去ブラシ
のフィルタ、10……紙粉除去ブラシの繊維の束、11……
紙粉除去ブラシの固定板。FIG. 1 is an enlarged sectional view of a main part of a developing device according to the present invention, FIG.
FIG. 3 is an external view showing the shape of fibers used in the paper dust removing brush according to the present invention, and FIG. 3 is an enlarged cross-sectional view of a main part of a conventional developing device. 1 ... photoreceptor, 2 ... development container, 3 ... developer, 3a ...
Puddle 4 ... Magnet roll, 5, 6 ... Stirrer, 7
…… Regulation plate, 8 …… Scraper, 9 …… Filter for paper dust removal brush, 10 …… Bundle of fibers of paper dust removal brush, 11 ……
Fixed plate for paper dust removal brush.
Claims (6)
マグネットロールに接近して設置した規制板と、上記の
マグネットロールの円周面に接して設置したスクレーパ
とを具備した現像装置において、しなやかな弾性力に富
む繊維からなる紙粉除去ブラシを、その先端が上記のス
クレーパで掻き落した現像剤の流れの中に埋まるように
配設し、現像剤との接触によって摩擦帯電されるように
したことを特徴とする現像装置。1. A developing device comprising a magnet roll having a built-in magnet, a regulating plate installed close to the magnet roll, and a scraper installed in contact with the circumferential surface of the magnet roll, which is flexible. A paper dust removing brush made of fibers with high elasticity was arranged so that its tip was buried in the flow of the developer scraped by the scraper, so that the brush was frictionally charged by contact with the developer. A developing device characterized by the above.
の束より背の低い不織布状のシートからなるフィルタを
備えたことを特徴とする特許請求の範囲第（１）項記載
の現像装置。2. A filter made of a non-woven fabric sheet having a height shorter than that of the fiber bundle is provided at the base of the fiber bundle of the paper dust removing brush. Development device.
らなることを特徴とする特許請求の範囲第（１）項また
は第（２）項記載の現像装置。3. The developing device according to claim 1, wherein the paper dust removing brush is made of an insulating polymer material.
維を用いたことを特徴とする特許請求の範囲第（１）項
又は第（２）項記載の現像装置。4. The developing device according to claim 1, wherein the paper dust removing brush is made of a fiber having a wavy shape.
り合わせたものを用いたことを特徴とする特許請求の範
囲第（１）項又は第（２）項記載の現像装置。5. The developing device according to claim 1, wherein the paper dust removing brush is formed by twisting a plurality of fibers into a thread shape.
維を用いたことを特徴とする特許請求の範囲第（１）項
又は第（２）項記載の現像装置。6. The developing device according to claim 1, wherein a fiber having a spiral shape is used for the paper dust removing brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60206303A JPH073613B2 (en) | 1985-09-20 | 1985-09-20 | Development device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60206303A JPH073613B2 (en) | 1985-09-20 | 1985-09-20 | Development device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6267572A JPS6267572A (en) | 1987-03-27 |
| JPH073613B2 true JPH073613B2 (en) | 1995-01-18 |
Family
ID=16521066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60206303A Expired - Fee Related JPH073613B2 (en) | 1985-09-20 | 1985-09-20 | Development device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073613B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4003087B1 (en) | 2006-08-31 | 2007-11-07 | 富士ゼロックス株式会社 | Image forming member, toner removing device, developing device, and image forming device |
| US7672620B2 (en) * | 2006-12-06 | 2010-03-02 | Xerox Corporation | Developer purification station or structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922941B2 (en) * | 1976-01-09 | 1984-05-30 | コニカ株式会社 | Electrostatic image developing device |
| JPS6343476Y2 (en) * | 1979-09-27 | 1988-11-14 | ||
| JPS5871754U (en) * | 1981-11-09 | 1983-05-16 | 株式会社リコー | developing device |
-
1985
- 1985-09-20 JP JP60206303A patent/JPH073613B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6267572A (en) | 1987-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3781107A (en) | Cleaning apparatus | |
| US5481351A (en) | Electrophotographic recording apparatus having improved residual toner cleaning function | |
| US4530597A (en) | Brush cleaning device | |
| JPS62279382A (en) | Cleaner for electrostatic photograph type copying machine | |
| US6022660A (en) | Developer, process cartridge and electrophotographic image forming apparatus that employs the developer and process cartridge | |
| JPH073613B2 (en) | Development device | |
| JP2868539B2 (en) | Cleaning brush for electrophotographic equipment | |
| US4279499A (en) | Electrophotographic cleaning apparatus | |
| US4483611A (en) | Magnetic cleaning device | |
| US5923940A (en) | Cleaning brush having fibers of different lengths | |
| US4260243A (en) | Cleaning apparatus | |
| JP2947071B2 (en) | Cleaner, developing device, and electrophotographic apparatus using the cleaner and the developing device | |
| EP0463399A2 (en) | Sweep and vacuum xerographic cleaning method and apparatus | |
| EP0639804B1 (en) | Apparatus for removing residual developer material from a surface of a printing machine | |
| US4022157A (en) | Magnetic brush developer equipped with self-metering controls | |
| US4417807A (en) | Cleaning apparatus for recording apparatus | |
| JPS5949575A (en) | Cleaning device of copying machine | |
| JPH04270371A (en) | Cleaning device | |
| JPH03153287A (en) | Brush roll of cleaning device | |
| JPS6028354B2 (en) | Dry developing device in electrophotographic equipment | |
| JPS6350666Y2 (en) | ||
| JPH04242275A (en) | Magnetic brush type developing device for electrophotographic device | |
| JPS6362745B2 (en) | ||
| JPH0291676A (en) | Cleaning device for image forming device | |
| JPS6156374A (en) | Developing device of copying machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |