JPH02210476A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPH02210476A JPH02210476A JP1031831A JP3183189A JPH02210476A JP H02210476 A JPH02210476 A JP H02210476A JP 1031831 A JP1031831 A JP 1031831A JP 3183189 A JP3183189 A JP 3183189A JP H02210476 A JPH02210476 A JP H02210476A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- thin film
- film sleeve
- developing device
- regulating
- 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
- 230000001105 regulatory effect Effects 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims description 13
- 239000010409 thin film Substances 0.000 abstract description 29
- 239000000565 sealant Substances 0.000 abstract 3
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- WCVOGSZTONGSQY-UHFFFAOYSA-N 2,4,6-trichloroanisole Chemical compound COC1=C(Cl)C=C(Cl)C=C1Cl WCVOGSZTONGSQY-UHFFFAOYSA-N 0.000 description 1
- 244000105975 Antidesma platyphyllum Species 0.000 description 1
- 244000208060 Lawsonia inermis Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 235000009424 haa Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業」＝−の利用分野〕
本発明は、電子写真法による複写機、プリンタ、ファク
シミリ等の現像装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of Industry] The present invention relates to a developing device for an electrophotographic copying machine, printer, facsimile, or the like.
従来、前記現像装置として、第４図に示すものが提案さ
れている。Conventionally, as the developing device, one shown in FIG. 4 has been proposed.
この現像装置１では、現像槽２の前部に駆動ローラ３が
配置され、該駆動ローラ３に薄膜スリーブ４が外装しで
ある。In this developing device 1, a driving roller 3 is disposed in front of a developing tank 2, and a thin film sleeve 4 is wrapped around the driving roller 3.
薄膜スリーブ４は、ポリエステル等の樹脂ソート又は金
属薄膜等からなり、外面はプラスト処理等によって粗面
化され、その周長は駆動ローラ３の周長よりも長くしで
ある。The thin film sleeve 4 is made of a resin sort such as polyester or a thin metal film, and its outer surface is roughened by a blast treatment or the like, and its circumference is longer than the circumference of the drive roller 3.
薄膜スリーブ４の両端部には、第５図に示すように、現
像槽２との間に設けたシール部材５か圧接しており、現
像槽２と薄膜スリーブ４との間からのトナーの漏れを防
止するとともに、薄膜スリーブ４を駆動ローラ３の外周
面に密着させ、薄膜スリーブ４の弛みを前部に集中し、
感光体２０との対向部において、薄膜スリーブ４と駆動
ローラ３の間に空間部Ｓか形成されている。勿論、薄膜
スリーブ４の底部と現像槽２との間もシールされている
。また、薄膜スリーブ４の後部外周面には、規制部材８
の先端規制部９か圧接しである。さらに、シール部材５
，５の外側部には夫々薄膜スリーブ４の片寄りを防止す
るストッパ１３か設けてある。As shown in FIG. 5, sealing members 5 provided between the thin film sleeve 4 and the developer tank 2 are in pressure contact with both ends of the thin film sleeve 4 to prevent toner from leaking between the developer tank 2 and the thin film sleeve 4. At the same time, the thin film sleeve 4 is brought into close contact with the outer peripheral surface of the drive roller 3, and the slack of the thin film sleeve 4 is concentrated in the front part.
A space S is formed between the thin film sleeve 4 and the drive roller 3 at a portion facing the photoreceptor 20 . Of course, the bottom of the thin film sleeve 4 and the developer tank 2 are also sealed. Further, a regulating member 8 is provided on the rear outer peripheral surface of the thin film sleeve 4.
The end regulating portion 9 is in pressure contact. Furthermore, the seal member 5
, 5 are each provided with a stopper 13 for preventing the thin film sleeve 4 from shifting.
なお、薄膜スリーブ４と駆動ローラ３との摩擦係数をμ
ｍ、薄膜スリーブ４とシール部材５との摩擦係数をμｍ
とすると、μｍ〉μ２の関係が付与されている。In addition, the coefficient of friction between the thin film sleeve 4 and the drive roller 3 is μ
m, the coefficient of friction between the thin film sleeve 4 and the seal member 5 is μm
Then, the relationship μm>μ2 is given.
現像槽２の後部には、１〜ナ一収容部１４が形成され、
そこには撹拌羽根１５．１６か配置され、非磁性のトナ
ーが収容しである。At the rear of the developer tank 2, accommodating portions 1 to 14 are formed.
Stirring blades 15 and 16 are arranged there, and non-magnetic toner is contained therein.
以」−の構成を備えた現像装置１ては、ｌ・ナー収容部
１４の１〜ナーは、撹拌羽根１５，１．６の回転によっ
て矢印方向に移動し、駆動ローラ３の回転とともに薄膜
スリーブ４が矢印ａ方向に移動する。In the developing device 1 having the following configuration, the l-ners 1 to 1 in the l-ner storage section 14 move in the direction of the arrow by the rotation of the stirring blades 15 and 1.6, and the thin film sleeve moves as the drive roller 3 rotates. 4 moves in the direction of arrow a.
また、１−ナー収容部１４において、薄膜スリーブ４の
外周部に保持されたトナーは規制部９で規制され、ここ
を通過する際に荷電トナー薄層となる。Further, in the 1-toner storage section 14, the toner held on the outer periphery of the thin film sleeve 4 is regulated by a regulating section 9, and becomes a thin layer of charged toner when passing through this.
前記荷電トナー薄層は、感光体２０との対向部に搬送さ
れ、感光体２０．ｊ：の静電潜像に供給される。The charged toner thin layer is conveyed to a portion facing the photoreceptor 20, and the charged toner thin layer is transported to a portion facing the photoreceptor 20. j: is supplied to the electrostatic latent image.
しかしながら、前記現像装置１では、第５図に像装置に
おいて、前記シール部材の回転体との接触面に、これら
シール部材と回転体との間に侵入したトナーを、回転体
の回転に従って規制部材の圧接領域に戻すガイ１へ部を
設けたものである。However, in the developing device 1, as shown in FIG. 5, the toner that has entered between the sealing member and the rotating body is removed from the regulating member according to the rotation of the rotating body, on the contact surface of the seal member with the rotating body. A portion is provided to the guy 1 to return it to the pressure contact area.
前記現像装置によれば、シール部材の側面に沿って搬送
されてきたトナーは、規制部材に規制されて側方に移動
する。According to the developing device, the toner conveyed along the side surface of the sealing member is regulated by the regulating member and moves laterally.
そして、シール部材と薄膜スリーブとの間に侵入した］
ヘナーは、薄膜スリーブの回転に従って搬送され、ガイ
ド部によって規制部材の接触領域に送り戻される。Then, it entered between the sealing member and the thin film sleeve]
The henna is conveyed as the thin film sleeve rotates and is sent back to the contact area of the regulating member by the guide section.
以下、本発明の具体例について、添付図面を参照して説
明する。Hereinafter, specific examples of the present invention will be described with reference to the accompanying drawings.
第１〜３図は本発明にかかる現像装置の要部を示し、図
示されていないその他の構成は前述した第５図の現像装
置１と同一である。したがって、説明も省略する。1 to 3 show essential parts of a developing device according to the present invention, and the other components not shown are the same as the developing device 1 shown in FIG. 5 described above. Therefore, the explanation will also be omitted.
これらの図において、シール部材５は、ポリエ示すよう
に、規制部９の両端部ては、規制されたトナーかシール
部材５の内側に侵入し、現像装置１の外部にこほれ出た
り、また駆動ローラ３と薄膜スリーブ４との間に侵入し
て両者の間にスリップを生じさせたり、さらに、軸受部
やギヤに付着して駆動の不安定化を招くという問題点を
有していた。In these figures, the sealing member 5 is designed to prevent regulated toner from entering the inside of the sealing member 5 and spilling out to the outside of the developing device 1 at both ends of the regulating portion 9, as shown by Porie. There have been problems in that the particles enter between the drive roller 3 and the thin film sleeve 4, causing slippage between them, and furthermore, they adhere to bearings and gears, causing instability of the drive.
この問題点を解決するために、シール部材５の圧接力を
大きくして、トナーがソール部材５の内側に侵入するの
を阻止する方法もあるが、この場合は駆動ローラ３の回
転］・ルクが大きくなるという問題がある。また、シー
ル部材５の圧接力を大きくしてもトナーの侵入を完全に
阻止することは無理である。In order to solve this problem, there is a method of increasing the pressure contact force of the seal member 5 to prevent the toner from entering the inside of the sole member 5, but in this case, the rotation of the drive roller 3 The problem is that it becomes large. Further, even if the pressure of the seal member 5 is increased, it is impossible to completely prevent toner from entering.
本発明は、前記問題点を解決するためになされたもので
、回転体の両端外周面にシール部材を接触させるととも
に、これらシール部材の間で回転体の外周部に規制部材
を圧接し、回転体の外周面に保持されたトナーを前記規
制部材で規制する現チレン、ナイロン、ポリアセタール
、ポリプロピレンなどの樹脂シートで形成されており、
規制部材８の先端規制部９の延長」−からさらに矢印ａ
方向に移動した位置に、外側から斜め下流側に向かって
傾斜段部６が形成してあり、該傾斜段部６よりも矢印ａ
方向下流側か厚くしである。この傾ホー１段部６は、前
記樹脂シートの内面に、もう−枚の樹脂ソートを貼り着
けて形成される。なお、傾斜段部６は、シール部材６を
形成する際に一体的に形成してもよい。The present invention has been made to solve the above-mentioned problems, and includes sealing members that are brought into contact with the outer circumferential surfaces of both ends of the rotating body, and a regulating member that is pressed against the outer circumferential portion of the rotating body between these sealing members. The regulating member regulates the toner held on the outer peripheral surface of the body, and is made of a resin sheet made of tyrene, nylon, polyacetal, polypropylene, etc.
Extension of the distal end regulating portion 9 of the regulating member 8" - further from the arrow a
An inclined step portion 6 is formed diagonally downstream from the outside at the position moved in the direction, and the direction indicated by the arrow a
The direction is downstream or thicker. The first step part 6 of the inclined hole is formed by pasting another sheet of resin sort on the inner surface of the resin sheet. Note that the inclined step portion 6 may be formed integrally when forming the seal member 6.
前記現像装置では、駆動ローラ３と共に移動する薄膜ス
リーブ４に保持された１〜ナーは、規制部材８の先端規
制部９て規制され、一部のトナーは規制部９に沿って側
方に移動する。In the developing device, the toners 1 to 1 held by the thin film sleeve 4 that moves together with the drive roller 3 are regulated by the distal end regulating portion 9 of the regulating member 8, and some of the toners move laterally along the regulating portion 9. do.
そして、シール部材５と薄膜スリー７４との間に侵入し
たトナーは、矢印す方向に沿って移動する。すなわち、
ます薄膜スリーブ４の移動に従って矢印ａ方向に搬送さ
れ、傾斜段部６の手前側でこれに規制されて内側に移動
し、規制部材８か接触している領域Ｘに戻される。The toner that has entered between the seal member 5 and the thin film sleeve 74 moves along the direction of the arrow. That is,
As the thin film sleeve 4 moves, it is conveyed in the direction of arrow a, and is regulated by the inclined stepped portion 6 on the near side, moves inward, and is returned to the region X where it is in contact with the regulating member 8.
したがって、シール部材５と薄膜スリーブ４との間に侵
入したｊ・ナーが、そのまま駆動ローラ３の両端から落
下ということは殆どない。Therefore, it is almost impossible for the j.
なお、前記実施例では、駆動ローラ３に外装した薄膜ス
リーブ４にトナーを担持する現像装置について説明した
が、駆動ローラ３に直接Ｉ・ナーを担持する形態の現像
装置にも、本発明は適用可能である。In the above embodiment, a developing device in which the toner is carried on the thin film sleeve 4 that is mounted on the drive roller 3 has been described, but the present invention is also applicable to a developing device in which the toner is carried directly on the drive roller 3. It is possible.
以」−の説明で明らかなように、本発明にかかる現像装
置では、回転体の両端から漏れ出るトナーの量は極めて
僅かである。As is clear from the following explanation, in the developing device according to the present invention, the amount of toner leaking out from both ends of the rotating body is extremely small.
したかって、シール部材の接触面を通過して駆動ローラ
の端部から落下したり、軸受部やギヤにトナーか付着す
ることがないので、機械内部を清潔に維持てきるととも
に、駆動系の円滑な駆動を維持できる。また、実施例に
示す形態の現像装置にあっては、駆動ローラと薄膜スリ
ーブとの間にトナーか侵入して両者の間にスリップを生
しさせるということかなく、薄膜スリーブの安定した移
動を確保できる。Therefore, toner does not pass through the contact surface of the seal member and fall from the end of the drive roller, or adhere to the bearings or gears, so the inside of the machine is kept clean and the drive system runs smoothly. It is possible to maintain proper drive. Furthermore, in the developing device shown in the embodiment, stable movement of the thin film sleeve can be achieved without toner entering between the drive roller and the thin film sleeve and causing slippage between the two. Can be secured.
第１．２図は本発明にかかる現像装置の部分斜視図、第
３図は規制部材、シール部材の正面図、第４図は従来の
現像装置の部分斜視図、第５図は現像装置の断面図であ
る。
１・・現像装置、２ ・現像槽、３ 駆動ローラ、４
薄膜スリーブ、５ ・シール部材、６ 傾斜段部、８・
規制部材、９・・規制部、１４・］ヘナー収容部、２０
・・感光体、Ｓ・空間部。
特許出願人 ミノルタカメラ株式会社
代理人 弁理士 青白 葆 はめ川名
第１図
第３図
日
第２図1.2 is a partial perspective view of a developing device according to the present invention, FIG. 3 is a front view of a regulating member and a sealing member, FIG. 4 is a partial perspective view of a conventional developing device, and FIG. 5 is a partial perspective view of a developing device. FIG. 1. Developing device, 2 ・Developing tank, 3 Drive roller, 4
Thin film sleeve, 5 Seal member, 6 Inclined step, 8
Regulating member, 9...Regulating portion, 14.] Henner storage portion, 20
...Photoconductor, S/space part. Patent Applicant Minolta Camera Co., Ltd. Agent Patent Attorney Aohaku Ao Hame Kawana Figure 1 Figure 3 Date Figure 2
Claims (1)
ともに、これらシール部材の間で回転体の外周部に規制
部材を圧接し、回転体の外周面に保持されたトナーを前
記規制部材で規制する現像装置において、前記シール部
材の回転体との接触面に、これらシール部材と回転体と
の間に侵入したトナーを、回転体の回転に従って規制部
材の圧接領域に戻すガイド部を設けたことを特徴とする
現像装置。(1) A sealing member is brought into contact with the outer circumferential surface of both ends of the rotating body, and a regulating member is pressed against the outer circumferential part of the rotating body between these sealing members, and the toner held on the outer circumferential surface of the rotating body is removed by the regulating member. In the regulating developing device, a guide portion is provided on the contact surface of the sealing member with the rotating body to return toner that has entered between the sealing member and the rotating body to a pressure contact area of the regulating member as the rotating body rotates. A developing device characterized by:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1031831A JP3057682B2 (en) | 1989-02-10 | 1989-02-10 | Developing device |
| US07/476,609 US5057868A (en) | 1989-02-10 | 1990-02-07 | Developing apparatus having a sealing construction for preventing a toner leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1031831A JP3057682B2 (en) | 1989-02-10 | 1989-02-10 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02210476A true JPH02210476A (en) | 1990-08-21 |
| JP3057682B2 JP3057682B2 (en) | 2000-07-04 |
Family
ID=12342016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1031831A Expired - Lifetime JP3057682B2 (en) | 1989-02-10 | 1989-02-10 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3057682B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007128008A (en) * | 2005-11-07 | 2007-05-24 | Konica Minolta Business Technologies Inc | Developing device, process cartridge and image forming apparatus |
| JP2009069488A (en) * | 2007-09-13 | 2009-04-02 | Konica Minolta Business Technologies Inc | Developing device |
| US7627264B2 (en) | 2005-09-30 | 2009-12-01 | Brother Kogyo Kabushiki Kaisha | Developing device and image forming apparatus |
| WO2013164872A1 (en) | 2012-04-30 | 2013-11-07 | 三和テクノ株式会社 | Electrophotographic image-forming device provided with end sealant |
| US9500989B2 (en) | 2012-04-30 | 2016-11-22 | Susumu Shoji | End seal member for electrophotographic image-forming device |
-
1989
- 1989-02-10 JP JP1031831A patent/JP3057682B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7627264B2 (en) | 2005-09-30 | 2009-12-01 | Brother Kogyo Kabushiki Kaisha | Developing device and image forming apparatus |
| JP2007128008A (en) * | 2005-11-07 | 2007-05-24 | Konica Minolta Business Technologies Inc | Developing device, process cartridge and image forming apparatus |
| JP2009069488A (en) * | 2007-09-13 | 2009-04-02 | Konica Minolta Business Technologies Inc | Developing device |
| WO2013164872A1 (en) | 2012-04-30 | 2013-11-07 | 三和テクノ株式会社 | Electrophotographic image-forming device provided with end sealant |
| US9268262B2 (en) | 2012-04-30 | 2016-02-23 | Susumu Shoji | Electrophotographic image-forming device provided with end seal member |
| US9500989B2 (en) | 2012-04-30 | 2016-11-22 | Susumu Shoji | End seal member for electrophotographic image-forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3057682B2 (en) | 2000-07-04 |
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