JPH05204246A - Hopper seal for developing device - Google Patents
Hopper seal for developing deviceInfo
- Publication number
- JPH05204246A JPH05204246A JP4035693A JP3569392A JPH05204246A JP H05204246 A JPH05204246 A JP H05204246A JP 4035693 A JP4035693 A JP 4035693A JP 3569392 A JP3569392 A JP 3569392A JP H05204246 A JPH05204246 A JP H05204246A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- hopper
- toner
- replenishing port
- 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.)
- Granted
Links
Landscapes
- Dry Development In Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は電子写真プロセスを利用
した画像形成装置の現像装置のトナーホッパーとトナー
タンクとの間を仕切るホッパーシールの改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a hopper seal for partitioning a toner hopper and a toner tank of a developing device of an image forming apparatus using an electrophotographic process.
【0002】[0002]
【従来の技術】電子写真プロセスを利用した複写機、プ
リンタ、ファクシミリ装置等の画像形成装置にあって
は、原稿反射光等の光学的な画像情報を一様に静電帯電
した感光体上に導いて潜像を形成し、該潜像に対して現
像装置からトナーを塗布して顕像化してから該トナー像
を記録紙上に転写、定着することにより一連の画像形成
工程を実施している。2. Description of the Related Art In an image forming apparatus such as a copying machine, a printer or a facsimile apparatus utilizing an electrophotographic process, optical image information such as reflected light of a document is uniformly electrostatically charged on a photoreceptor. A series of image forming steps are carried out by forming a latent image by applying a toner to the latent image from a developing device to visualize the latent image, and then transferring and fixing the toner image on recording paper. ..
【0003】ところで、上記画像形成装置のうちのロー
エンド機にあっては、トナー交換の必要性をなくした使
い捨てタイプのプロセスカートリッジが主流である。こ
のプロセスカートリッジはトナーホッパーを含んだ現像
装置と、帯電チャージャ等の周辺ユニットを組み合わせ
て一体化したものであり、全体として画像形成装置に着
脱される。By the way, in the low-end machine of the above-mentioned image forming apparatus, a disposable type process cartridge which eliminates the need for toner replacement is mainstream. This process cartridge is a combination of a developing device including a toner hopper and a peripheral unit such as a charging charger, which is integrated with the image forming device.
【0004】ところで、このプロセスカートリッジの現
像装置本体側(トナータンク)にトナーが貯留されてい
る場合には、搬送時等に現像ローラ近傍の間隙等からト
ナーがこぼれて飛散する虞れが高まるので、トナーホッ
パーと現像装置(トナータンク)との間にシールを張設
してトナーホッパー内のトナーが現像装置側に侵入しな
いような配慮を行っている。このプロセスカートリッジ
を画像形成装置に装備する場合には、装着直前にこのシ
ールを剥してホッパー内のトナーを現像装置側へ補給可
能な状態にしておくものである。By the way, when toner is stored in the developing device main body side (toner tank) of the process cartridge, there is a high possibility that the toner may be spilled and scattered from a gap near the developing roller during transportation. A seal is provided between the toner hopper and the developing device (toner tank) to prevent the toner in the toner hopper from entering the developing device side. When the process cartridge is installed in the image forming apparatus, the seal is peeled off just before the mounting so that the toner in the hopper can be supplied to the developing apparatus side.
【0005】特に、ホッパーと現像ローラとの位置関係
が水平方向一直線上にある場合には、ホッパーから現像
ローラまでトナーを搬送するために大きな補給力が必要
となるとともに、現像ローラ側へのトナーの補給量も大
きなものとなる。とりわけ、現像ローラの軸方向端部へ
のトナーの直接補給はこの部分(ホッパーの補給口のう
ち現像ローラ端部と対面した部分)のシール性が低いこ
とを勘案すると、外部へのトナーの漏出が甚だしいもの
となる虞れが高い。Particularly, when the positional relationship between the hopper and the developing roller is in a straight line in the horizontal direction, a large replenishing force is required to convey the toner from the hopper to the developing roller, and the toner to the developing roller side is required. The amount of replenishment will be large. In particular, when the toner is directly replenished to the end of the developing roller in the axial direction, considering that the sealing property of this portion (the portion of the replenishing port of the hopper facing the end of the developing roller) is low, the toner leaks to the outside. There is a high risk that it will be serious.
【0006】[0006]
【発明の目的】本発明は上記に鑑みてなされたものであ
り、トナーホッパーを含んだ現像装置と、帯電チャージ
ャ等の周辺ユニットを組み合わせて一体化したプロセス
カートリッジにおいて、トナーホッパーと現像装置とを
仕切ってトナーの流入を防止するシールを剥離した後に
ホッパー側から過大な量のトナーが現像ローラへ向けて
直接補給されることを防止した現像装置のホッパーシー
ルを提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in a process cartridge in which a developing device including a toner hopper and a peripheral unit such as a charger are combined and integrated, the toner hopper and the developing device are combined. An object of the present invention is to provide a hopper seal for a developing device in which an excessive amount of toner is prevented from being directly replenished toward the developing roller from the hopper side after the partition for separating the seal for preventing the inflow of toner is peeled off.
【0007】[0007]
【発明の構成】上記目的を達成するため本願第1の発明
は、少なくともトナーホッパー、現像ローラ及び該トナ
ーホッパーの補給口を閉止するホッパーシールを含んだ
現像装置を有し、画像形成装置本体に対して着脱可能な
プロセスカートリッジにおいて、該ホッパーシールは該
補給口に剥離可能に貼着されてこれを閉止するシール本
体と、該シール本体に貼着されると共に該補給口の長手
方向両端部だけを所定幅にわたって閉止しシール本体剥
離後も補給口端部に残留する残留シール部とを備えてい
ることを特徴とする。To achieve the above object, the first invention of the present application has a developing device including at least a toner hopper, a developing roller, and a hopper seal for closing a replenishing port of the toner hopper. On the other hand, in the process cartridge which can be attached and detached, the hopper seal is releasably attached to the replenishing port and closes the seal body, and only the both longitudinal ends of the replenishing port are attached to the seal body. Is closed over a predetermined width, and a residual seal portion remains at the end of the supply port even after the seal body is peeled off.
【0008】また、本願第2の発明は、少なくともトナ
ーホッパー、現像ローラ及び該トナーホッパーの補給口
を閉止するホッパーシールを含んだ現像装置を有し、画
像形成装置本体に対して着脱可能なプロセスカートリッ
ジにおいて、該ホッパーシールは該補給口に剥離可能に
貼着されてこれを閉止するシール本体と、該シール本体
に貼着されると共に該補給口の下縁部を所定幅にわたっ
て閉止しシール本体剥離後も補給口下縁に残留する残留
シール部とを備えていることを特徴とする。The second invention of the present application has a developing device including at least a toner hopper, a developing roller, and a hopper seal for closing the replenishing port of the toner hopper, and is detachable from the main body of the image forming apparatus. In the cartridge, the hopper seal is releasably attached to the replenishing port and closes the seal body, and the hopper seal is attached to the seal body and the lower edge portion of the replenishing port is closed over a predetermined width. It is characterized in that it has a residual seal portion which remains on the lower edge of the supply port even after peeling.
【0009】以下、添付図面に示した好適な実施例によ
り本発明を説明する。図1は本発明を適用する画像形成
装置の概略構成を示す図であり、この画像形成装置では
感光体ユニット1と、現像ユニット2が夫々装置本体に
対して着脱自在であり且つ使い捨て可能なものである。
なお、符号3は給紙カセット、4は定着ユニット、5は
光学系である。The present invention will be described below with reference to the preferred embodiments shown in the accompanying drawings. FIG. 1 is a diagram showing a schematic configuration of an image forming apparatus to which the present invention is applied. In this image forming apparatus, a photoconductor unit 1 and a developing unit 2 are detachable from the apparatus main body and disposable. Is.
Reference numeral 3 is a paper feed cassette, 4 is a fixing unit, and 5 is an optical system.
【0010】図2は上記現像ユニット2だけを示す図で
あり、この現像ユニット2は感光体に対面してトナーを
塗布するための現像ローラ10と、現像ブレード11
と、帯電チャージャ12と、現像ケース13と、トナー
ホッパー15と、トナー回収部16を有し、これらは溶
着一体化されている。また、図2、図3に示すようにト
ナーホッパー15の補給口(対面する現像ローラ10の
軸方向と平行に延びる開口)17にはホッパーシール2
0が張り付けられて補給口17を閉止している。FIG. 2 is a view showing only the developing unit 2, which is a developing roller 10 for applying toner to the photosensitive member and a developing blade 11.
The charging charger 12, the developing case 13, the toner hopper 15, and the toner collecting unit 16 are integrally formed by welding. Further, as shown in FIGS. 2 and 3, the hopper seal 2 is provided at the replenishment port (opening extending parallel to the axial direction of the developing roller 10 facing) of the toner hopper 15.
0 is stuck and the supply port 17 is closed.
【0011】図3(a) (b) に示すようにホッパーシール
20は補給口17の両端部を所定幅に渡って常時閉止す
るために補給口17の両端部に固定された残留シール部
22、23と、一方の残留シール22により一端縁25
aを剥離可能に接着されるとともに中間部25bを他方
の残留シール23によって剥離可能に接着され、更に他
端部25cを把持しやすいように突出させたシール本体
25とから成る。従って、他端部25cを把持して図3
の矢印方向へ引き抜くことにより中間部25bと一端縁
25aが順次剥離してシール本体25をホッパーから離
脱させることができる。残留シール22、23は図4に
示すように補給口17の両端縁に残留してホッパー側か
らのトナーの直接補給を防ぎ、現像ローラへの過剰供給
を防いでいる。なお図4は現像ローラを取り外した状態
を示している。As shown in FIGS. 3 (a) and 3 (b), the hopper seal 20 is a residual seal portion 22 fixed to both ends of the replenishing port 17 so that both ends of the replenishing port 17 are constantly closed over a predetermined width. , 23 and one of the residual seals 22 causes one edge 25
a is peelably adhered, the intermediate portion 25b is peelably adhered by the other residual seal 23, and the other end portion 25c is protruded so as to be easily gripped. Therefore, by grasping the other end 25c, as shown in FIG.
By pulling out in the direction of the arrow, the intermediate portion 25b and the one end edge 25a are sequentially peeled off, and the seal body 25 can be detached from the hopper. As shown in FIG. 4, the residual seals 22 and 23 remain on both edges of the replenishing port 17 to prevent the toner from being directly replenished from the hopper side and prevent the excessive supply to the developing roller. Note that FIG. 4 shows a state in which the developing roller is removed.
【0012】シール本体及び残留シール部は樹脂シー
ト、フィルム等から成り、残留シール部は仕切り板とし
て使用されるため所定以上の耐久性が必要であるため、
シール本体よりも機械的強度の強い材質を用いる。Since the seal body and the residual seal portion are made of a resin sheet, a film, etc., and the residual seal portion is used as a partition plate, durability higher than a predetermined level is required.
Use a material with higher mechanical strength than the seal body.
【0013】図5(a) 及び(b) は本発明の第2実施例の
ホッパーシールの構成説明図であり、(a) は現像装置の
斜視図、(b) はシールの構成説明図である。このホッパ
ーシール20は長尺な帯状のシール本体25と、シール
本体25の下縁縁に沿って一端部25aから補給口17
の長さとほぼ同等な長さ部分に渡って剥離可能に接着さ
れた細幅帯状の残留シール部30とから成り、シール本
体25は残留シール部30の終端部30aから折り返し
た折返し部25dの他端部25cに把持部を有してい
る。残留シール部30はその下半分程度の部分を全長に
渡ってシール本体25の下端縁から下方に突出させてお
り、この突出部分の裏面(図5(b) の手前側面)を補給
口17の下側縁部に固着する。なお、厳密に突出部分の
裏面だけを接着する必要はなく、要するにシール本体2
5を残留シール部30から剥離した時に残留シール部3
0の上縁部30bが補給口17の下側に全長に渡って突
出した仕切り板となって、トナーのホッパー側への逆流
を防止する様に構成すれば良い。FIGS. 5 (a) and 5 (b) are explanatory views of the construction of the hopper seal according to the second embodiment of the present invention, FIG. 5 (a) is a perspective view of the developing device, and FIG. is there. The hopper seal 20 includes a long strip-shaped seal body 25 and a replenishment port 17 from one end 25 a along the lower edge of the seal body 25.
The strip-shaped residual seal portion 30 is detachably bonded over a length substantially equal to the length of the residual seal portion 30. The seal body 25 includes a folded portion 25d other than the folded portion 25d which is folded from the terminal end portion 30a of the residual seal portion 30. The end portion 25c has a grip portion. The residual seal portion 30 has a lower half portion thereof projecting downward from the lower end edge of the seal body 25 over the entire length, and the rear surface of this projecting portion (the front side surface in FIG. Stick to the lower edge. It is not necessary to strictly adhere only the back surface of the protruding portion, and in short, the seal body 2
5 is removed from the residual seal portion 30, the residual seal portion 3
The upper edge portion 30b of 0 serves as a partition plate projecting to the lower side of the replenishment port 17 over the entire length so as to prevent backflow of the toner to the hopper side.
【0014】この実施例のシール20は、シール本体2
5と残留シール部30とによってホッパーの補給口17
を完全に接着閉止する一方で、把持部25cを把持して
矢印で示す方向へ引き抜いた場合には残留シール部30
だけが補給口17の下側縁部に残留して、シール本体は
残留シール部及び補給口17周縁から剥離して除去され
ることとなる。この結果、残った残留シール部30は仕
切り板となってトナーの逆流を防止して補給性を向上す
ることができる。The seal 20 of this embodiment comprises a seal body 2
5 and the residual seal portion 30 allow the supply port 17 of the hopper
Is completely adhered and closed while the grip portion 25c is gripped and pulled out in the direction shown by the arrow, the residual seal portion 30
Only remains at the lower edge of the supply port 17, and the seal body is peeled off from the residual seal portion and the periphery of the supply port 17 and removed. As a result, the remaining residual seal portion 30 serves as a partition plate to prevent backflow of toner and improve replenishability.
【0015】なお、前記第1と第2実施例の構成を組み
合わせた残留シール部を有したホッパーシールを適用し
て補給口両端部からのトナーの過剰補給と、トナーの逆
流を同時に防止する様にしてもよい。By applying a hopper seal having a residual seal portion, which is a combination of the configurations of the first and second embodiments, it is possible to prevent excessive replenishment of toner from both ends of the replenishment port and backflow of toner at the same time. You can
【0016】このように本発明にあってはトナーホッパ
ーの補給口を閉止するホッパーシールを剥離可能なシー
ル本体と、シール本体剥離後に補給口周縁に残留してト
ナーの過剰供給や逆流を防止する残留シート部とから構
成したため、既存タイプの現像装置に適用することによ
り大幅な改造を加えることなく該不具合をなくすること
ができる。As described above, according to the present invention, the hopper seal that closes the replenishing port of the toner hopper can be peeled off, and after the seal body is peeled off, it remains on the periphery of the replenishing port to prevent excessive supply or backflow of toner. Since it is composed of the residual sheet portion, it can be eliminated by applying it to an existing type developing device without making a great modification.
【0017】[0017]
【発明の効果】以上の様に本発明によれば、トナーホッ
パーを含んだ現像装置と、帯電チャージャ等の周辺ユニ
ットを組み合わせて一体化したプロセスカートリッジに
おいて、トナーホッパーと現像装置とを仕切ってトナー
の流入を防止するシールを剥離した後にホッパー側から
過大な量のトナーが現像ローラへ向けて直接補給された
り、ホッパー側へ逆流することを防止することができ
る。As described above, according to the present invention, in a process cartridge in which a developing device including a toner hopper and a peripheral unit such as a charging charger are combined and integrated, the toner hopper and the developing device are separated from each other. It is possible to prevent an excessive amount of toner from being replenished directly from the hopper side to the developing roller after the seal for preventing the inflow of the toner is peeled off or from flowing backward to the hopper side.
【図1】本発明を適用する画像形成装置の概略構成説明
図である。FIG. 1 is a schematic configuration explanatory diagram of an image forming apparatus to which the present invention is applied.
【図2】プロセスカートリッジとしての現像装置の一実
施例の外観図である。FIG. 2 is an external view of an embodiment of a developing device as a process cartridge.
【図3】(a) 及び(b) は本発明のホッパーシールをホッ
パーの補給口に接着した状態の斜視図及びシールの構成
を示す平面図である。3 (a) and 3 (b) are a perspective view and a plan view showing the structure of the seal, in which the hopper seal of the present invention is adhered to the supply port of the hopper.
【図4】図3(a) のシールを剥離した時の補給口の状態
を示す斜視図である。FIG. 4 is a perspective view showing a state of a supply port when the seal of FIG. 3 (a) is peeled off.
【図5】(a) 及び(b) は本発明のホッパーシールの第2
実施例の説明図であり、(a) はシール本体を剥離して残
留シール部が補給口に残留した状態を示す斜視図、(b)
は第2実施例のホッパーシールの構成説明図である。5 (a) and 5 (b) are the second part of the hopper seal of the present invention.
It is an explanatory view of the embodiment, (a) is a perspective view showing a state in which the seal main body is peeled off and the residual seal portion remains in the supply port, (b)
[FIG. 6] is a structural explanatory view of a hopper seal of the second embodiment.
1 感光体ユニット、2 現像ユニット、3 給紙カセ
ット 4 定着ユニット、5 光学系、10 現像ロー
ラ、11 現像ブレード、12 帯電チャージャ、13
現像ケース、15 トナーホッパー、16 トナー回
収部、17 補給口、20 ホッパーシール、22、2
3 残留シール部、25 シール本体、25a 一端
縁,25b 中間部,25c 他端部(把持部)、30
残留シール部、30a 終端部、DESCRIPTION OF SYMBOLS 1 photoconductor unit, 2 developing unit, 3 paper feeding cassette, 4 fixing unit, 5 optical system, 10 developing roller, 11 developing blade, 12 charging charger, 13
Development case, 15 toner hopper, 16 toner recovery section, 17 replenishment port, 20 hopper seal, 22, 2
3 Residual seal part, 25 Seal body, 25a One end edge, 25b Intermediate part, 25c Other end part (grasping part), 30
Residual seal part, 30a end part,
Claims (2)
及び該トナーホッパーの補給口を閉止するホッパーシー
ルを含んだ現像装置を有し、画像形成装置本体に対して
着脱可能なプロセスカートリッジにおいて、該ホッパー
シールは該補給口に剥離可能に貼着されてこれを閉止す
るシール本体と、該シール本体に貼着されると共に該補
給口の長手方向両端部だけを所定幅にわたって閉止しシ
ール本体剥離後も補給口端部に残留する残留シール部と
を備えていることを特徴とする現像装置のホッパーシー
ル。1. A process cartridge having at least a toner hopper, a developing roller, and a hopper seal for closing a supply port of the toner hopper, the process cartridge being detachable from the main body of the image forming apparatus, wherein the hopper seal is A seal body that is releasably attached to the replenishing port and closes the replenishing port, and a replenishing port that is attached to the seal body and closes both longitudinal end portions of the replenishing port over a predetermined width to remove the seal body. A hopper seal for a developing device, comprising: a residual seal portion remaining at an end portion.
及び該トナーホッパーの補給口を閉止するホッパーシー
ルを含んだ現像装置を有し、画像形成装置本体に対して
着脱可能なプロセスカートリッジにおいて、該ホッパー
シールは該補給口に剥離可能に貼着されてこれを閉止す
るシール本体と、該シール本体に貼着されると共に該補
給口の下縁部を所定幅にわたって閉止しシール本体剥離
後も補給口下縁に残留する残留シール部とを備えている
ことを特徴とする現像装置のホッパーシール。2. A process cartridge which has a developing device including at least a toner hopper, a developing roller, and a hopper seal for closing a supply port of the toner hopper, and which is attachable to and detachable from the image forming apparatus main body, wherein the hopper seal is A seal body that is releasably attached to the replenishing port and closes it, and a lower edge of the replenishing port that is attached to the seal body and closes the lower edge portion of the replenishing port over a predetermined width to remove the seal body And a residual seal portion that remains in the hopper seal of the developing device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP03569392A JP3153609B2 (en) | 1992-01-27 | 1992-01-27 | Hopper seal of developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP03569392A JP3153609B2 (en) | 1992-01-27 | 1992-01-27 | Hopper seal of developing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05204246A true JPH05204246A (en) | 1993-08-13 |
JP3153609B2 JP3153609B2 (en) | 2001-04-09 |
Family
ID=12448980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP03569392A Expired - Fee Related JP3153609B2 (en) | 1992-01-27 | 1992-01-27 | Hopper seal of developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3153609B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010039348A (en) * | 2008-08-07 | 2010-02-18 | Fuji Xerox Co Ltd | Developing device, process cartridge, image forming apparatus, and developer storage container |
JP2010282232A (en) * | 2010-09-22 | 2010-12-16 | Fuji Xerox Co Ltd | Developer storage container, developing device, process cartridge, and image forming apparatus |
-
1992
- 1992-01-27 JP JP03569392A patent/JP3153609B2/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010039348A (en) * | 2008-08-07 | 2010-02-18 | Fuji Xerox Co Ltd | Developing device, process cartridge, image forming apparatus, and developer storage container |
JP4596056B2 (en) * | 2008-08-07 | 2010-12-08 | 富士ゼロックス株式会社 | Developing device, process cartridge, image forming apparatus, and developer container |
AU2009201092B2 (en) * | 2008-08-07 | 2011-03-17 | Fujifilm Business Innovation Corp. | Developing device, process cartridge, image forming device, and developer container |
US8099015B2 (en) | 2008-08-07 | 2012-01-17 | Fuji Xerox Co., Ltd. | Developing device, process cartridge, image forming device, and developer container |
JP2010282232A (en) * | 2010-09-22 | 2010-12-16 | Fuji Xerox Co Ltd | Developer storage container, developing device, process cartridge, and image forming apparatus |
JP4706802B2 (en) * | 2010-09-22 | 2011-06-22 | 富士ゼロックス株式会社 | Developer container, developing device, process cartridge, and image forming apparatus |
Also Published As
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JP3153609B2 (en) | 2001-04-09 |
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