JP2856845B2 - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JP2856845B2 JP2856845B2 JP13965090A JP13965090A JP2856845B2 JP 2856845 B2 JP2856845 B2 JP 2856845B2 JP 13965090 A JP13965090 A JP 13965090A JP 13965090 A JP13965090 A JP 13965090A JP 2856845 B2 JP2856845 B2 JP 2856845B2
- Authority
- JP
- Japan
- Prior art keywords
- developing roller
- developer
- seal sheet
- developer container
- developing 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 - Fee Related
Links
Landscapes
- 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、複写機、プリンタ等の画像形成装置の現像
装置に関する。Description: TECHNICAL FIELD The present invention relates to a developing device of an image forming apparatus such as a copying machine and a printer.
（従来の技術） 従来、複写機、プリンタ等の画像形成装置に用いられ
る現像装置のうち、特に本体に対して着脱自在に構成さ
れるカートリッジのものは予め現像剤を現像装置内に収
納した状態で出荷され、速やかに使用に供される構成と
なっている。その場合、現像装置の出荷後から該現像装
置が本体に装着されるまでの間に現像装置内部からの現
像剤の漏出を防ぐ手段が必要である。2. Description of the Related Art Conventionally, among developing devices used in image forming apparatuses such as copying machines and printers, cartridges that are detachably attached to a main body have a state in which the developer is stored in the developing device in advance. It is configured to be shipped immediately and used immediately. In this case, a means for preventing leakage of the developer from the inside of the developing device between the shipping of the developing device and the mounting of the developing device on the main body is required.
上記手段の１つが特開昭63−210974号公報に記載され
ているが、その方法は現像ローラと該現像ローラに圧接
する現像剤層厚規制部材の間、又は現像ローラと該現像
ローラ両端部周面に沿うサイドシールの間を通る可撓性
シートで現像剤の漏出を防ぎ、使用に際して該可撓性シ
ートを除去するものである。One of the above-mentioned means is described in JP-A-63-210974, but the method is described between a developing roller and a developer layer thickness regulating member which is in pressure contact with the developing roller, or between a developing roller and both ends of the developing roller. A flexible sheet that passes between side seals along the peripheral surface prevents leakage of the developer, and removes the flexible sheet during use.
（発明が解決しようとする課題） しかしながら、上記従来例では、現像ローラ下部の開
口部の封鎖が不十分であるため、そこから現像剤が振動
等で漏出する場合があった。(Problems to be Solved by the Invention) However, in the above-mentioned conventional example, since the opening of the lower portion of the developing roller is not sufficiently sealed, the developer may leak from the opening due to vibration or the like.
そこで、現像ローラ下部の開口部に現像ローラに当接
するようにスクイシートを設ける場合があるが、該スク
イシートの当接圧が弱いと現像装置内部からの現像剤の
漏出を防ぎきれなくなり、強いと現像装置の使用時に現
像ローラ上の現像剤を剥ぎ落してしまい、両立する当接
圧範囲が極めて狭いという欠点があった。Therefore, there is a case where a squeeze sheet is provided so as to be in contact with the developing roller at the opening at the lower part of the developing roller. When the apparatus is used, the developer on the developing roller is peeled off, and the compatible contact pressure range is extremely narrow.
又、前記可撓性シートの端部を現像装置に接着や溶剤
で固定することで現像ローラ下部の開口部を閉じること
ができるが、該シートを除去する直前に、別途シートの
固定を解除する操作が必要となり、手間が増えて使いづ
らくなるという欠点があった。Further, by fixing the end of the flexible sheet to the developing device with an adhesive or a solvent, the opening at the lower portion of the developing roller can be closed, but immediately before the sheet is removed, the fixing of the sheet is separately released. Operation is required, and there is a disadvantage that the operation is increased and it is difficult to use.
本発明は上記問題に鑑みてなされたもので、その目的
とする処は、簡単な構成で現像剤の漏出を確実に防ぐこ
とができるとともに、使用前の操作が容易である現像装
置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a developing device that can reliably prevent developer leakage with a simple configuration and that can be easily operated before use. It is in.
（課題を解決するための手段） 上記目的を達成すべく本発明は、内部に現像剤を収容
する現像剤容器と、一部が現像剤容器から露出する円筒
状の現像ローラと、該現像ローラの両側端部に該現像ロ
ーラの周方向に沿うように設けられたサイドシールと、
現像ローラ表面に当接する現像剤層厚規制部材を含んで
構成される現像装置において、可撓性のシールシート
を、前記現像ローラと現像剤層厚規制部材との間、現像
ローラと前記サイドシールとの間及び現像ローラと前記
現像剤容器との間の開口部を通るように配設するととも
に、前記開口部における該シールシートと現像剤容器と
の接合にチャック方式を用いたことをその特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a developer container containing a developer therein, a cylindrical developing roller partially exposed from the developer container, and the developing roller. Side seals provided on both side edges of the developing roller along the circumferential direction of the developing roller,
In a developing device including a developer layer thickness regulating member abutting on a surface of a developing roller, a flexible seal sheet may be provided between the developing roller and the developer layer thickness regulating member, the developing roller and the side seal. And the developer container is disposed so as to pass through the opening between the developing roller and the developer container, and a chuck method is used for joining the seal sheet and the developer container at the opening. And
（作用） 本発明によれば、シールシートは現像ローラの下方に
おいて現像剤容器に対してチャック方式で接合されてい
るため、現像装置内の現像剤の漏出が簡単な構成で確実
に防がれる。(Operation) According to the present invention, since the seal sheet is joined to the developer container by the chuck method below the developing roller, leakage of the developer in the developing device can be reliably prevented with a simple configuration. .
又、現像装置の使用に際しては、シールシートの端部
を引張ってこれを引き抜くだけで済むため、使用前の操
作が容易化する。Further, when using the developing device, it is only necessary to pull the end portion of the seal sheet and pull it out, so that the operation before use is facilitated.
（実施例） 以下に本発明の一実施例を添付図面に基づいて説明す
る。Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明に係る現像装置の中央部の縦断面図、
第２図は同現像装置端部のサイドシール部の縦断面図、
第３図は現像剤容器とシールシートとの接合状態を示す
拡大断面図である。FIG. 1 is a longitudinal sectional view of a central portion of a developing device according to the present invention,
FIG. 2 is a longitudinal sectional view of a side seal portion at an end of the developing device,
FIG. 3 is an enlarged cross-sectional view showing a joint state between the developer container and the seal sheet.
本発明に係る現像装置１においては、第１図の紙面垂
直方向に長い円筒状の現像ローラ２が現像剤容器３に回
転自在に支承されて設けられており、該現像ローラ２の
一部は図示のように現像剤容器３の外方へ露出してい
る。そして、現像ローラ２の表面には現像剤層厚規制部
材であるブレード４が圧接されており、このブレード４
は現像剤容器３に直接又は間接的に支持されている。
尚、現像剤容器３内には現像剤が収容されており、この
現像剤は現像ローラ２に内蔵された不図示の磁石の磁力
のために通常の状態で現像ローラ２下部と現像剤容器３
との間に形成される開口部５から露出することはない。In the developing device 1 according to the present invention, a cylindrical developing roller 2 long in the direction perpendicular to the paper surface of FIG. 1 is rotatably supported by a developer container 3 and a part of the developing roller 2 is provided. As shown, it is exposed to the outside of the developer container 3. A blade 4 serving as a developer layer thickness regulating member is pressed against the surface of the developing roller 2.
Are directly or indirectly supported by the developer container 3.
A developer is stored in the developer container 3, and the developer is kept in a normal state between the lower portion of the developing roller 2 and the developer container 3 due to the magnetic force of a magnet (not shown) built in the developing roller 2.
It is not exposed from the opening 5 formed between them.
又、現像ローラ２の両側端部には、第２図に示すよう
に、サイドシール６が現像ローラ２の周面に沿うように
設けられており、このサイドシール６によって現像剤容
器３内の現像剤の側方からの漏出が防がれる。As shown in FIG. 2, side seals 6 are provided on both side ends of the developing roller 2 so as to extend along the peripheral surface of the developing roller 2. Leakage of the developer from the side is prevented.
而して、本実施例においては、可撓性のシールシート
７が前記ブレード４と現像ローラ２との間、両端部のサ
イドシール６と現像ローラ２との間及び前記開口部５を
通るように配されている。尚、シールシート７として
は、厚さ50〜200μｍのPET（ポリエチレンテレフタレー
ト）が用いられる。In this embodiment, the flexible seal sheet 7 passes between the blade 4 and the developing roller 2, between the side seals 6 at both ends and the developing roller 2, and the opening 5. It is arranged in. In addition, PET (polyethylene terephthalate) having a thickness of 50 to 200 μm is used as the seal sheet 7.
ここで、現像ローラ２下方の開口部５におけるシール
シート７と現像剤容器３との接合構造を第３図に基づい
て説明する。Here, the joining structure between the seal sheet 7 and the developer container 3 at the opening 5 below the developing roller 2 will be described with reference to FIG.
開口部５においてシールシート７は現像剤容器３に所
謂チャック方式で接合されており、現像剤容器３の一部
には凹部3aが幅方向（第３図の紙面垂直方向）に長く一
体に突設されており、該凹部3a内にはシールシート７の
一部に幅方向に長く突設された鉤針状の凸部7aが嵌合し
ている。この状態では、開口部５におけるシールシート
７と現像剤容器３との接合は緊密になされており、現像
装置１に振動等が加わっても、現像剤容器３内の現像剤
の漏出がシールシート７によって確実に防がれる。尚、
本実施例では接合部の高さ寸法ｈは１〜3mmとされてい
る。At the opening 5, the seal sheet 7 is joined to the developer container 3 by a so-called chuck method, and a recess 3a is formed in a part of the developer container 3 so as to protrude integrally in the width direction (perpendicular to the paper surface in FIG. 3). In the recess 3a, a hook-shaped protrusion 7a protruding from the seal sheet 7 in the width direction is fitted. In this state, the seal sheet 7 and the developer container 3 are tightly joined at the opening 5, and even if vibration is applied to the developing device 1, the leakage of the developer in the developer container 3 causes the seal sheet to leak. 7 reliably prevents this. still,
In this embodiment, the height h of the joint is set to 1 to 3 mm.
而して、シールシート７と現像剤容器３との接合は一
方向にだけ解除が可能であり、両者の接合構造は開封異
方性を有するチャック方式を採ることとなる。即ち、第
３図において、シールシート７を図示矢印Ａ方向に引く
と、該シールシート７の凸部7aの鉤部7a−１が現像剤容
器３の凹部3aの鉤部3a−１と噛み合うため、シールシー
ト７と現像剤容器３との接合は解除されない。Thus, the joining between the seal sheet 7 and the developer container 3 can be released only in one direction, and the joining structure of both employs a chuck system having anisotropy in opening. That is, in FIG. 3, when the seal sheet 7 is pulled in the direction of arrow A in the drawing, the hook 7a-1 of the convex portion 7a of the seal sheet 7 engages with the hook 3a-1 of the concave portion 3a of the developer container 3. The joining between the seal sheet 7 and the developer container 3 is not released.
これに対して、シールシート７を図示矢印Ｂ方向に引
くと、凸部7aの鉤部7a−１と凹部3aの鉤部3a−１が互い
に逃げるため、シールシート７と現像剤容器３の接合が
解除され、シールシート７を容易に取り外すことができ
る。On the other hand, when the seal sheet 7 is pulled in the direction of arrow B in the figure, the hook 7a-1 of the projection 7a and the hook 3a-1 of the recess 3a escape from each other. Is released, and the seal sheet 7 can be easily removed.
又、シールシート７を図示矢印Ｃ方向に引くと、これ
を矢印Ａ方向に引くと同様に両鉤部7a−１と3a−１が噛
み合うため、シールシート７を取り外すことができな
い。Also, when the seal sheet 7 is pulled in the direction of arrow C in the figure, the hook portions 7a-1 and 3a-1 are engaged in the same manner as when the seal sheet 7 is pulled in the direction of arrow A, so that the seal sheet 7 cannot be removed.
以上の結果、現像装置１の使用に際してのシールシー
ト７の引き抜き方向を第３図の矢印Ｂ方向と同方向（第
２図の矢印イ方向）としておけば、該シールシート７の
引き抜きが容易に行なえる。尚、本実施例では、シール
シート７の引き抜き方向（図示矢印イ方向）が開口部５
の法線方向（第３図の矢印ロ方向）に一致しないように
している。その理由は、両方向が一致すると、現像装置
１に加わる衝撃等で生じる現像剤の現像剤容器３外へ出
ようとする力でシールシート７が開封される虞があるた
めである。As a result, if the direction of pulling out the seal sheet 7 when using the developing device 1 is set to the same direction as the direction of arrow B in FIG. 3 (the direction of arrow A in FIG. 2), the pulling out of the seal sheet 7 is easy. I can do it. In the present embodiment, the direction in which the seal sheet 7 is pulled out (the direction indicated by the arrow A in the drawing) is the opening 5.
(The direction of arrow B in FIG. 3). The reason is that if the two directions coincide with each other, there is a possibility that the seal sheet 7 may be opened by a force generated by an impact or the like applied to the developing device 1 to cause the developer to move out of the developer container 3.
又、本実施例のようにシールシート７と現像剤容器３
との接合にチャック方式を用いれば、引き抜いたシール
シート７をその後何回でも使用することができるため、
コストダウン及び省資源を図ることができる。Also, as in this embodiment, the seal sheet 7 and the developer container 3
If the chuck method is used for bonding with the seal sheet, the extracted seal sheet 7 can be used any number of times thereafter,
Cost reduction and resource saving can be achieved.
尚、以上の実施例では、現像剤容器３に凹部3aを設
け、シールシート７に凸部7aを設けたが、この凹凸の関
係を逆にしてもよいことは勿論である。In the above embodiment, the concave portion 3a is provided in the developer container 3 and the convex portion 7a is provided in the seal sheet 7. However, the relationship between the concave and convex portions may be, of course, reversed.
（発明の効果） 以上の説明で明らかな如く、本発明によれば、内部に
現像剤を収容する現像剤容器と、一部が現像剤容器から
露出する円筒状の現像ローラと、該現像ローラの両側端
部に該現像ローラの周方向に沿うように設けられたサイ
ドシールと、現像ローラ表面に当接する現像剤層厚規制
部材を含んで構成される現像装置において、可撓性のシ
ールシートを、前記現像ローラと現像剤層厚規制部材と
の間、現像ローラと前記サイドシールとの間及び現像ロ
ーラと前記現像剤容器との間の開口部を通るように配設
するとともに、前記開口部における該シールシートと現
像剤容器との接合にチャック方式を用いたため、簡単な
構成で現像剤の漏出を確実に防ぐことができるととも
に、当該現像装置使用前の操作の容易化を図ることがで
きるという効果が得られる。(Effects of the Invention) As is apparent from the above description, according to the present invention, a developer container accommodating a developer therein, a cylindrical developing roller partially exposed from the developer container, and the developing roller In a developing device including a side seal provided on both side end portions along the circumferential direction of the developing roller and a developer layer thickness regulating member abutting on the surface of the developing roller, a flexible seal sheet is provided. Are disposed so as to pass through openings between the developing roller and the developer layer thickness regulating member, between the developing roller and the side seal, and between the developing roller and the developer container. Since the chuck method is used for joining the seal sheet and the developer container in the portion, the leakage of the developer can be reliably prevented with a simple configuration, and the operation before using the developing device can be facilitated. When you can The above effect can be obtained.
第１図は本発明に係る現像装置の中央部の縦断面図、第
２図は同現像装置端部のサイドシール部の縦断面図、第
３図は現像剤容器とシールシートとの接合状態を示す拡
大断面図である。 １…現像装置、２…現像ローラ、３…現像剤容器、４…
ブレード（現像剤層厚規制部材）、６…サイドシール、
７…シールシート。FIG. 1 is a longitudinal sectional view of a central portion of the developing device according to the present invention, FIG. 2 is a longitudinal sectional view of a side seal portion at an end portion of the developing device, and FIG. 3 is a joint state between a developer container and a seal sheet. FIG. DESCRIPTION OF SYMBOLS 1 ... Developing device, 2 ... Developing roller, 3 ... Developer container, 4 ...
Blade (developer layer thickness regulating member), 6 ... side seal,
7 ... Seal sheet.
Claims (4)
部が現像剤容器から露出する円筒状の現像ローラと、該
現像ローラの両側端部に該現像ローラの周方向に沿うよ
うに設けられたサイドシールと、現像ローラ表面に当接
する現像剤層厚規制部材を含んで構成される現像装置に
おいて、可撓性のシールシートを、前記現像ローラと現
像剤層厚規制部材との間、現像ローラと前記サイドシー
ルとの間及び現像ローラと前記現像剤容器との間の開口
部を通るように配設するとともに、前記開口部における
該シールシートと現像剤容器との接合にチャック方式を
用いたことを特徴とする現像装置。A developer container accommodating a developer therein; a cylindrical developing roller partially exposed from the developer container; and a side end of the developing roller extending along a circumferential direction of the developing roller. In a developing device including a side seal provided on the developing roller and a developer layer thickness regulating member that comes into contact with the surface of the developing roller, a flexible seal sheet is formed between the developing roller and the developer layer thickness regulating member. And an opening between the developing roller and the side seal, and between the developing roller and the developer container, and a chuck for joining the seal sheet and the developer container at the opening. A developing device characterized by using a system.
性を有することを特徴とする請求項１記載の現像装置。2. The developing device according to claim 1, wherein said chuck system has anisotropy in an opening direction.
ク開封の容易な方向に一致することを特徴とする請求項
２記載の現像装置。3. The developing device according to claim 2, wherein the direction in which the seal sheet is pulled out coincides with the direction in which the chuck can be easily opened.
口部の法線方向とが一致しないことを特徴とする請求項
３記載の現像装置。4. The developing device according to claim 3, wherein a direction in which the seal sheet is pulled out does not coincide with a normal direction of the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13965090A JP2856845B2 (en) | 1990-05-31 | 1990-05-31 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13965090A JP2856845B2 (en) | 1990-05-31 | 1990-05-31 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0434467A JPH0434467A (en) | 1992-02-05 |
| JP2856845B2 true JP2856845B2 (en) | 1999-02-10 |
Family
ID=15250213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13965090A Expired - Fee Related JP2856845B2 (en) | 1990-05-31 | 1990-05-31 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2856845B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5749026A (en) * | 1996-02-13 | 1998-05-05 | Rti International Corporation | Removable shipping seal for a toner cartridge and method of using the same |
| AU3969299A (en) * | 1998-05-01 | 1999-11-23 | Clarity Imaging Technologies, Inc. | Removable shipping seal for a toner cartridge |
| US20150355580A1 (en) * | 2014-06-05 | 2015-12-10 | Clover Technologies Group, Llc | Leak barrier for developer cartridge |
-
1990
- 1990-05-31 JP JP13965090A patent/JP2856845B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0434467A (en) | 1992-02-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |