JPH0527574A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPH0527574A JPH0527574A JP3206113A JP20611391A JPH0527574A JP H0527574 A JPH0527574 A JP H0527574A JP 3206113 A JP3206113 A JP 3206113A JP 20611391 A JP20611391 A JP 20611391A JP H0527574 A JPH0527574 A JP H0527574A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- blade
- end seal
- developing device
- developing
- 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
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複写機やプリンター等
の画像形成装置に設けられる現像装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing device provided in an image forming apparatus such as a copying machine or a printer.
【０００２】[0002]
【従来の技術】図２５乃至図２７に従来の現像装置の構
成を示す。即ち、図２５は従来の現像装置の斜視図、図
２６は同現像装置要部（現像剤担持体部分）の側断面
図、図２７は現像剤担持体を取り外した状態の現像装置
の部分正面図であり、図示のように、現像容器１の前方
開口部には、現像剤担持体２が設けられており、該現像
剤担持体２には、現像剤の層厚規制や電荷付与等の機能
を有するブレード３と現像剤担持体２の下部からの現像
剤の漏れを防止するためのスクイシート４が当接してい
る。そして、上記現像剤担持体２、ブレード３及びスク
イシート４の両端部と現像容器１との接合部には端部シ
ール５が設けられている。25 to 27 show the structure of a conventional developing device. That is, FIG. 25 is a perspective view of a conventional developing device, FIG. 26 is a side sectional view of the main part of the developing device (developer carrier), and FIG. 27 is a partial front view of the developing device with the developer carrier removed. As shown in the drawing, a developer carrier 2 is provided in the front opening of the developing container 1, and the developer carrier 2 is provided for controlling the layer thickness of the developer and imparting electric charge. A blade 3 having a function and a squeeze sheet 4 for preventing the developer from leaking from the lower portion of the developer carrier 2 are in contact with each other. An end seal 5 is provided at the joint between the developer carrier 2, the blade 3, and the squisheet 4 and the developer container 1.
【０００３】上記端部シール５は現像容器１に設けられ
ており、該端部シール５には、現像剤担持体２と該現像
剤担持体２によって押圧されたブレード３が接触してい
る。このとき、ブレード３とスクイシート４の端部と端
部シール５の間に隙間が発生して現像剤がその隙間から
漏れるのを防ぐため、図２７に示すように、ブレード３
とスクイシート４の端部が端部シール５とオーバーラッ
プするよう構成されている。The end seal 5 is provided on the developing container 1, and the developer carrier 2 and the blade 3 pressed by the developer carrier 2 are in contact with the end seal 5. At this time, in order to prevent a gap from being generated between the end portion of the blade 3 and the squi sheet 4 and the end seal 5 and the developer from leaking from the gap, as shown in FIG.
The end of the squi sheet 4 is configured to overlap the end seal 5.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の現像装置においては、端部シール５に対してブレー
ド３が現像剤担持体２に押されて接触するため、端部シ
ール５とブレード３の接触部に隙間が発生することがあ
り、斯かる場合にはその隙間から現像剤が漏れ出るとい
う問題があった。そこで、隙間の発生を防ぐために端部
シール５とブレード３の接触部に強い圧力が作用するよ
うにすれば、その部分で摩擦による現像剤の融着が発生
し易くなり、端部近傍でのブレード３の変形による現像
剤の漏れの問題が発生し易い。However, in the above-mentioned conventional developing device, the blade 3 is pushed and brought into contact with the end seal 5 by the developer carrying member 2, so that the end seal 5 and the blade 3 are not in contact with each other. A gap may occur in the contact portion, and in such a case, there is a problem that the developer leaks from the gap. Therefore, if a strong pressure is applied to the contact portion between the end seal 5 and the blade 3 in order to prevent the occurrence of a gap, the fusion of the developer due to friction is likely to occur at that portion, so that the vicinity of the end portion is likely to be fused. The problem of developer leakage due to the deformation of the blade 3 is likely to occur.
【０００５】又、ブレード３及びスクイシート４と端部
シール５との接触部分Ａ，Ｂから現像剤が漏れるという
問題が発生することがある。その理由としては、現像剤
担持体２や不図示の現像剤供給部材の回転によって、現
像剤が図２７の矢印方向（中央部から端部に向かう方
向）に流れてＡ部に集まり易いこと、Ｂ部で現像剤がブ
ロックされてそこから現像剤が漏れ易くなること、ブレ
ード３と端部シール５の接合部近傍では接合部のシール
のためにブレード３の現像剤担持体２への当接圧が他の
部分よりも大きく設定されているために現像剤の融着が
生じ易いこと、等が考えられる。尚、現像剤は圧力が高
かったり、高い摩擦熱を受けると融着し易く、特に非磁
性の現像剤は流動性が高いために漏れが生じ易い。Further, there may occur a problem that the developer leaks from the contact portions A and B between the blade 3 and the squi sheet 4 and the end seal 5. The reason for this is that the developer easily flows to the portion A by the rotation of the developer carrier 2 or a developer supply member (not shown), in the direction of the arrow in FIG. 27 (the direction from the center to the end), The developer is blocked at the portion B, and the developer easily leaks from the portion. In the vicinity of the joint between the blade 3 and the end seal 5, the blade 3 comes into contact with the developer carrier 2 for sealing the joint. It is conceivable that the developer is likely to be fused because the pressure is set to be larger than that of other portions. It should be noted that the developer is apt to fuse when the pressure is high or the frictional heat is high, and in particular, the non-magnetic developer has a high fluidity and is apt to leak.
【０００６】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、高いシール性を確保して現像
剤の漏れを確実に防ぐことができる現像装置を提供する
ことにある。The present invention has been made in view of the above problems, and an object of the present invention is to provide a developing device capable of ensuring a high sealing property and reliably preventing the developer from leaking.
【０００７】[0007]
【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、第１発明は、現像剤を収容する現像容器の開口
部に、少なくとも現像剤担持体とブレードを設け、これ
ら現像剤担持体とブレードの両端部と現像容器との接合
部を端部シールにてシールして成る現像装置において、
前記端部シールとブレードとを接着したことを特徴とす
る。In order to achieve the above object, the present invention provides a first invention, in which at least a developer carrying member and a blade are provided in an opening of a developing container for containing a developer, and the developer carrying member and the blade are carried. In a developing device in which both end portions of the body and the blade and the developing container are sealed with end seals,
The end seal and the blade are bonded together.
【０００８】又、第２発明は、現像剤を収容する現像容
器の開口部に、少なくとも現像剤担持体を設け、該現像
剤担持体の両端部と現像容器との接合部を端部シールに
てシールして成る現像装置において、前記端部シールの
内側に、該端部シールへの現像剤の流入規制及び端部シ
ール内側近傍の前記現像剤担持体への現像剤塗布規制の
ための第１の規制部材を設けたことを特徴とする。According to a second aspect of the invention, at least a developer carrying member is provided in an opening of a developing container for containing the developer, and a joint between the both ends of the developer carrying member and the developing container serves as an end seal. In a developing device formed by sealing the inside of the end seal, a first member for regulating the inflow of the developer into the end seal and regulating the application of the developer to the developer carrier near the inside of the end seal is provided. The first restriction member is provided.
【０００９】更に、第３発明は、現像剤を収容する現像
容器の開口部に、少なくとも現像剤担持体とブレードを
設け、これら現像剤担持体とブレードの両端部と現像容
器との接合部を端部シールにてシールして成る現像装置
において、前記端部シールの内側側壁に斜面部を設け、
少なくとも該斜面部の現像容器後方側に現像剤が流れ込
む空間を形成したことを特徴とする。Further, according to a third aspect of the invention, at least a developer carrying member and a blade are provided in an opening of a developing container for containing a developer, and a joint portion between the developer carrying member and both ends of the blade and the developing container is provided. In a developing device formed by sealing with an end seal, a slope portion is provided on an inner side wall of the end seal,
It is characterized in that a space into which a developer flows is formed at least on the rear side of the developing container in the inclined surface portion.
【００１０】[0010]
【作用】第１発明によれば、端部シールとブレードとが
接着されて一体化されるため、両者の接合部に隙間が発
生せず、ここからの現像剤の漏れが確実に防がれ、高い
シール性が確保される。又、端部シールとブレードの接
合部に高い圧力が加えなくても該部分には高いシール性
が確保されるため、現像剤の融着を防ぎ、現像剤担持体
の駆動力を低減することができる。According to the first aspect of the invention, since the end seal and the blade are bonded and integrated, no gap is formed at the joint between the two and the leakage of the developer from there is reliably prevented. , High sealing property is secured. Further, even if a high pressure is not applied to the joining portion between the end seal and the blade, a high sealing property is secured in that portion, so that the fusion of the developer is prevented and the driving force of the developer carrier is reduced. You can
【００１１】又、第２発明によれば、現像容器内におい
て端部シール方向に流れて来る現像剤は、前記規制部材
により端部シールへの流入が規制、或いは阻止され、更
には規制部材が接触している端部シール近傍の現像剤担
持体への現像剤の塗布が規制或いは阻止されるため、ブ
レードの両端部からの現像剤の漏れが確実に防がれ、高
いシールが確保される。According to the second aspect of the invention, the developer flowing in the direction of the end seal in the developing container is restricted or prevented from flowing into the end seal by the restriction member. Since application of the developer to the developer carrier near the contacting end seal is restricted or blocked, leakage of the developer from both ends of the blade is reliably prevented and a high seal is secured. .
【００１２】更に、第３発明によれば、現像剤は端部シ
ールに形成された斜面部によってその流れの方向が現像
容器の内部方向に変えられるため、端部シールの端部に
現像剤が集中せず、ここからの現像剤の漏れが確実に防
がれて高いシール性が確保される。又、現像剤容器内の
両端部で現像剤が循環し易くなるため、現像剤が現像容
器内の隅部で滞留しにくくなり、これによって現像剤の
劣化が防がれる。Further, according to the third aspect of the invention, since the direction of the flow of the developer is changed to the inside of the developing container by the inclined surface portion formed on the end seal, the developer is attached to the end of the end seal. Without concentrating, the leakage of the developer from here is surely prevented and a high sealing property is secured. Further, since the developer easily circulates at both ends in the developer container, the developer is less likely to stay at the corners in the developer container, which prevents deterioration of the developer.
【００１３】[0013]
【実施例】以下に第１発明の第１実施例を図１乃至図４
に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the first invention will be described below with reference to FIGS.
It will be described based on.
【００１４】図１は本発明の第１実施例に係る現像装置
要部（現像剤担持体部分）の側断面図、図２は現像剤担
持体を取り外した状態の現像装置の部分正面図、図３は
ブレードと端部シールの分解斜視図、図４は現像装置要
部の分解断面図である。FIG. 1 is a side sectional view of a main part (developer carrying member) of the developing device according to the first embodiment of the present invention, and FIG. 2 is a partial front view of the developing device with the developer carrying member removed. FIG. 3 is an exploded perspective view of the blade and the end seal, and FIG. 4 is an exploded sectional view of a main part of the developing device.
【００１５】図１に示すように、現像容器１の前方開口
部には、現像剤担持体２が設けられており、該現像剤担
持体２には、現像剤の層厚規制や電荷付与等の機能を有
するブレード３と現像剤担持体２の下部からの現像剤の
漏れを防止するためのスクイシート４が当接している。
そして、上記現像剤担持体２、ブレード３及びスクイシ
ート４の各両端部と現像容器１との接合部には端部シー
ル５が設けられている。As shown in FIG. 1, a developer carrying member 2 is provided at the front opening of the developing container 1, and the developer carrying member 2 has a layer thickness regulation of the developer and an electric charge imparted thereto. The blade 3 having the function of and the squeeze sheet 4 for preventing the developer from leaking from the lower portion of the developer carrier 2 are in contact with each other.
An end seal 5 is provided at the joint between each end of the developer carrying member 2, the blade 3, and the squi sheet 4 and the developing container 1.
【００１６】上記端部シール５は現像容器１に設けられ
ており、該端部シール５には、現像剤担持体２と該現像
剤担持体２によって押圧されたブレード３が接触してい
る。ところで、本実施例においては、端部シール５には
図３に示すように段部５Ａが形成されており、この段部
５Ａにブレード３の端部が嵌合されて接着される。即
ち、端部シール５の段部５Ａの面５ａ，５ｂ（斜線部）
にブレード３の端面３ａと下面３ｂを接合して端部シー
ル５とブレード３を接着する。このとき、端部シール５
とブレード３の現像剤担持体２との接触面は、図４に示
すように同一平面（面一）になるようにする。The above-mentioned end seal 5 is provided in the developing container 1, and the developer carrier 2 and the blade 3 pressed by the developer carrier 2 are in contact with the end seal 5. By the way, in this embodiment, the end seal 5 is formed with a step 5A as shown in FIG. 3, and the end of the blade 3 is fitted and adhered to the step 5A. That is, the surfaces 5a and 5b of the step 5A of the end seal 5 (hatched portions)
Then, the end surface 3a and the lower surface 3b of the blade 3 are joined to each other to bond the end seal 5 and the blade 3 together. At this time, the end seal 5
The contact surface between the blade 3 and the developer carrying member 2 should be flush with each other as shown in FIG.
【００１７】而して、上述のように接合一体化された端
部シール５とブレード３（図４参照）は現像容器１に取
り付けられ、その後に現像剤担持体２が現像容器１に組
み付けられる。すると、端部シール５は現像剤担持体２
によって押され、図１に示すように現像容器１に圧接さ
れる。Thus, the end seal 5 and the blade 3 (see FIG. 4) which are joined and integrated as described above are attached to the developing container 1, and then the developer carrying member 2 is attached to the developing container 1. . Then, the end seal 5 becomes the developer carrier 2
And is pressed against the developing container 1 as shown in FIG.
【００１８】以上において、本実施例では端部シール５
とブレード３とが接着されて一体化されるため、両者の
接合部に隙間が発生せず、ここからの現像剤の漏れが確
実に防がれ、高いシール性が確保される。又、端部シー
ル５とブレード３の接合部に高い圧力が加えなくても該
部分には高いシール性が確保されるため、現像剤の融着
を防ぎ、現像剤担持体２の駆動力を低減することができ
る。In the above, the end seal 5 is used in this embodiment.
Since the blade 3 and the blade 3 are bonded and integrated with each other, no gap is generated at the joint between the two and the leakage of the developer from there is reliably prevented, and a high sealing property is secured. Further, even if a high pressure is not applied to the joint portion between the end seal 5 and the blade 3, a high sealing property is secured in the portion, so that the fusion of the developer is prevented and the driving force of the developer carrier 2 is increased. It can be reduced.
【００１９】次に、第１発明の第２、第３、第４実施例
を図５及び図６、図７、図８にそれぞれ示す。Next, second, third, and fourth embodiments of the first invention are shown in FIGS. 5, 6, 7, and 8, respectively.
【００２０】図５及び図６に示す第２実施例において
は、弾性体から成る端部シール５にブレード３の端部３
Ａが嵌合すべき段部５Ａが形成されており、該段部５Ａ
の３面５ａ，５ｂ，５ｃ（斜線部）にブレード３の端部
３Ａの３面３ａ，３ｂ，３ｃが接合されて接着される。In the second embodiment shown in FIGS. 5 and 6, the end seal 5 made of an elastic material is attached to the end 3 of the blade 3.
A step portion 5A to be fitted with A is formed, and the step portion 5A is formed.
The three surfaces 5a, 5b, 5c (hatched portions) of the blade 3 are joined and bonded to the three surfaces 3a, 3b, 3c of the end portion 3A of the blade 3.
【００２１】而して、端部シール５とブレード３とを接
着して一体化した状態では、図６に示すように、端部シ
ール５の現像剤担持体２（図１参照）との接触面はブレ
ード３の表面からＤだけ突出しており、一体化された端
部シール５とブレード３を現像容器１（図１参照）に取
り付けた後に現像剤担持体２を現像容器１に組み付ける
と、端部シール５が圧縮変形し、現像剤担持体２との接
触面がブレード３の接触面と面一となる。When the end seal 5 and the blade 3 are bonded and integrated, as shown in FIG. 6, the end seal 5 comes into contact with the developer carrying member 2 (see FIG. 1). The surface protrudes from the surface of the blade 3 by D. When the integrated end seal 5 and blade 3 are attached to the developing container 1 (see FIG. 1) and the developer carrier 2 is assembled to the developing container 1, The end seal 5 is compressed and deformed, and the contact surface with the developer carrying member 2 is flush with the contact surface of the blade 3.
【００２２】又、図７に示す第３実施例では、ブレード
３の端部シール５との接合部に、弾性を有するＬ字状の
パッキング部材１７が接着されており、このパッキング
部材１７によって端部シール５との間に隙間が発生する
のが防がれる。Further, in the third embodiment shown in FIG. 7, an L-shaped packing member 17 having elasticity is adhered to the joint portion of the blade 3 with the end seal 5, and the end member is adhered by this packing member 17. It is possible to prevent a gap from being generated between the partial seal 5 and the seal 5.
【００２３】更に、図８に示す第４実施例においては、
端部シール５の側部に切欠溝５Ｂが形成され、この切欠
溝５Ｂにブレード３とブレード保持部材１８の端部が嵌
合されて接着されている。Further, in the fourth embodiment shown in FIG.
A cutout groove 5B is formed in a side portion of the end seal 5, and the ends of the blade 3 and the blade holding member 18 are fitted and adhered to the cutout groove 5B.
【００２４】而して、以上の第２乃至第４実施例におい
ても、前記第１実施例にて得られたと同様の効果が得ら
れる。Thus, the same effects as those obtained in the first embodiment can be obtained in the second to fourth embodiments described above.
【００２５】次に、第２発明の第１実施例を図９及び図
１０に基づいて説明する。尚、図９は第２発明の第１実
施例に係る現像装置要部（現像剤担持体部分）の側断面
図、図１０は現像剤担持体を取り外した状態の現像装置
の部分正面図であり、これらの図においては図１及び図
２において示したと同一要素には同一符号を付してお
り、以下、それらについての説明は省略する。Next, a first embodiment of the second invention will be described with reference to FIGS. 9 and 10. FIG. 9 is a side sectional view of the main part of the developing device (developer carrying member portion) according to the first embodiment of the second invention, and FIG. 10 is a partial front view of the developing device with the developer carrying member removed. In these figures, the same elements as those shown in FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof will be omitted below.
【００２６】第２発明においては、ブレード３と端部シ
ール５の接合部の内側に、フェルト、ウレタンフォーム
等の弾性部材から成る第１の規制部材６が現像容器１と
現像剤担持体２間で挟持されて設けられており、該規制
部材６は現像剤担持体２の現像容器１内における現像剤
接触部分を覆う形で現像剤担持体２に軽圧接されてい
る。In the second aspect of the invention, the first regulating member 6 made of an elastic material such as felt or urethane foam is provided inside the joint between the blade 3 and the end seal 5 between the developing container 1 and the developer carrying member 2. The restriction member 6 is lightly pressed against the developer carrying member 2 so as to cover the developer contacting portion of the developer carrying member 2 inside the developing container 1.
【００２７】而して、現像容器１内において端部シール
５方向に流れて来る現像剤は、前記規制部材６により端
部シール５への流入が規制、或いは阻止され、更には規
制部材６が接触している端部シール５近傍の現像剤担持
体２への現像剤の塗布が規制或いは阻止され、ブレード
３の両端部からの現像剤の漏れが確実に防がれ、現像容
器１には高いシールが確保される。Thus, the developer flowing in the direction of the end seal 5 in the developing container 1 is restricted or prevented from flowing into the end seal 5 by the restriction member 6, and further the restriction member 6 The application of the developer to the developer carrying member 2 in the vicinity of the contacting end seal 5 is regulated or blocked, the developer is surely prevented from leaking from both ends of the blade 3, and A high seal is secured.
【００２８】以下に、第２発明の第２、第３、第４実施
例を図１１及び図１２、図１３、図１４にそれぞれ示
す。The second, third and fourth embodiments of the second invention are shown below in FIGS. 11 and 12, 13 and 14, respectively.
【００２９】図１１及び図１２に示す第２実施例におい
ては、前記第１実施例において用いられた規制部材６が
設けられた端部近傍部分のブレード３の裏側に、ブレー
ド３の裏側を端部方向に流れる現像剤を規制するための
第２の規制部材７が設けられている。尚、この第２の規
制部材７はフェルト、ゴム、発泡体等で構成されてい
る。又、規制部材６，７は現像剤の流れを堰止めないよ
うに、即ち現像剤の流れが現像容器１の内方へ向くよう
に適当な斜度を有している。In the second embodiment shown in FIGS. 11 and 12, the back side of the blade 3 is located at the back side of the blade 3 in the vicinity of the end portion where the regulating member 6 used in the first embodiment is provided. A second restricting member 7 is provided for restricting the developer that flows in the sheet direction. The second restricting member 7 is made of felt, rubber, foam or the like. Further, the regulating members 6 and 7 have an appropriate inclination so that the flow of the developer is not blocked, that is, the flow of the developer is directed inward of the developing container 1.
【００３０】又、図１３に示す第３実施例においては、
前記第２実施例における規制部材６，７が規制部材８と
して一体化されており、該規制部材８の段部８Ａにブレ
ード３の端部が嵌合し、或いは接着される。Further, in the third embodiment shown in FIG.
The regulating members 6 and 7 in the second embodiment are integrated as the regulating member 8, and the end portion of the blade 3 is fitted or adhered to the step portion 8A of the regulating member 8.
【００３１】更に、図１４に示す第４実施例において
は、上記第３実施例における規制部材８と端部シール５
とが一体化されて部材９が構成されており、該部材９の
第３実施例での規制部材８に相当する部分は、他の部分
に比して小さい圧力で現像剤担持体２に圧接される。Further, in the fourth embodiment shown in FIG. 14, the regulating member 8 and the end seal 5 in the above-mentioned third embodiment are used.
And 9 are integrated to form a member 9, and a portion of the member 9 corresponding to the regulating member 8 in the third embodiment is pressed against the developer carrier 2 with a smaller pressure than other portions. To be done.
【００３２】而して、以上の第２乃至第４実施例におい
ても、前記第１実施例にて得られたと同様の効果が得ら
れる。Thus, also in the above-mentioned second to fourth embodiments, the same effect as that obtained in the first embodiment can be obtained.
【００３３】次に、第３発明の第１実施例を図１５乃至
図１８に基づいて説明する。尚、図１５は第３発明の第
１実施例に係る現像装置要部の側断面図、図１６は現像
剤担持体を取り外した状態の現像装置の部分正面図、図
１７は現像剤担持体端部のシール構造を示す部分斜視
図、図１８は同平断面図であり、これらの図においては
図１及び図２において示したと同一要素には同一符号を
付しており、以下、それらについての説明は省略する。Next, a first embodiment of the third invention will be described with reference to FIGS. FIG. 15 is a side sectional view of the main part of the developing device according to the first embodiment of the third invention, FIG. 16 is a partial front view of the developing device with the developer carrier removed, and FIG. 17 is the developer carrier. 18 is a partial perspective view showing the seal structure of the end portion, and FIG. 18 is a plan sectional view thereof. In these drawings, the same elements as those shown in FIGS. 1 and 2 are designated by the same reference numerals. Is omitted.
【００３４】第３発明においては、端部シール５の側壁
には斜面部５Ｃが形成されている。従って、図１７の矢
印方向に流れて来た現像剤は端部シール５の斜面部５Ｃ
に沿って図１８の矢印方向に流れる。即ち、現像剤は斜
面部５Ｃによってその流れの方向が現像容器１の内部方
向に変えられるため、端部シール５の端部に現像剤が集
中せず、ここからの現像剤の漏れが確実に防がれて現像
容器１には高いシール性が確保される。又、現像剤容器
１内の両端部で現像剤が循環し易くなるため、現像剤が
現像容器１内の隅部で滞留しにくくなり、これによって
現像剤の劣化が防がれる。尚、現像容器１は、端部シー
ル５の斜面部５Ｃで変向された現像剤が当該現像容器１
の内部に戻ることができる形状を有している。In the third invention, the side wall of the end seal 5 is formed with a slope 5C. Therefore, the developer flowing in the direction of the arrow in FIG.
Along the direction of the arrow in FIG. That is, since the flow direction of the developer is changed by the inclined surface portion 5C to the inner direction of the developing container 1, the developer is not concentrated at the end portion of the end seal 5, and the developer leaks from this reliably. This prevents the development container 1 from having a high sealing property. In addition, since the developer easily circulates at both ends in the developer container 1, the developer is less likely to stay at the corners in the developer container 1, thereby preventing deterioration of the developer. In the developing container 1, the developer deflected by the inclined surface portion 5C of the end seal 5 is the developing container 1 concerned.
It has a shape that allows it to return to the inside.
【００３５】以下に第３発明の第２、第３、第４実施例
を図１９乃至図２１、図２２及び図２３、図２４にそれ
ぞれ示す。The second, third and fourth embodiments of the third invention are shown below in FIGS. 19 to 21, 22 and 23, 24, respectively.
【００３６】図１９乃至図２１に示す第２実施例では、
端部シール５はブレード３とオーバーラップする構成と
なっており、ブレード３の裏面の端部シール５の側壁に
も第１実施例と同様の斜面部５Ｃが形成されており、ブ
レード３の裏面を図２０及び図２１の破線矢印方向に流
れて来た現像剤も現像容器１の内方へとその流れが変向
される。In the second embodiment shown in FIGS. 19 to 21,
The end seal 5 is configured to overlap with the blade 3, and the side surface of the end seal 5 on the back surface of the blade 3 is also formed with the inclined surface portion 5C similar to that of the first embodiment. The developer that has flowed in the direction of the broken arrow in FIGS. 20 and 21 is also redirected inwardly of the developing container 1.
【００３７】又、図２２び図２３に示す第３実施例で
は、端部シール５の側壁の斜面がＰＥＴフィルム等から
成る別部材１０で構成されている。端部シール５は一般
にフェルト等の材料で構成されるため、該端部シール５
自身で斜面を形成するとエッジ部をシャープにすること
ができないが、本構成によれば、端部シール５のエッジ
部分を現像剤担持体２の外周に接近させることができ、
現像剤のブロックを防ぐことができる。Further, in the third embodiment shown in FIGS. 22 and 23, the slope of the side wall of the end seal 5 is formed of another member 10 made of PET film or the like. Since the end seal 5 is generally made of a material such as felt, the end seal 5 is
When the slope is formed by itself, the edge portion cannot be sharpened, but according to this configuration, the edge portion of the end seal 5 can be brought close to the outer periphery of the developer carrying member 2,
The blocking of the developer can be prevented.
【００３８】更に、図２４に示す第４実施例において
は、端部シール５の斜面は現像容器１の側壁１Ａ（現像
容器１に設けられた現像剤担持体２の軸受部材）によっ
て構成されている。この場合、側壁１Ａは剛体であり、
そのエッジ部を現像剤担持体２に接近させることは難し
いため、側壁１Ａと現像剤担持体２との間に弾性部材１
１が介設されている。Further, in the fourth embodiment shown in FIG. 24, the inclined surface of the end seal 5 is constituted by the side wall 1A of the developing container 1 (the bearing member of the developer carrier 2 provided in the developing container 1). There is. In this case, the side wall 1A is a rigid body,
Since it is difficult to bring the edge portion close to the developer carrying member 2, the elastic member 1 is provided between the side wall 1A and the developer carrying member 2.
1 is provided.
【００３９】而して、以上の第２乃至第４実施例におい
ても、前記第１実施例にて得られたと同様の効果が得ら
れる。Thus, also in the above second to fourth embodiments, the same effect as that obtained in the first embodiment can be obtained.
【００４０】[0040]
【発明の効果】以上の説明で明らかな如く、本発明によ
れば、現像剤を収容する現像容器の開口部に、少なくと
も現像剤担持体とブレードを設け、これら現像剤担持体
とブレードの両端部と現像容器との接合部を端部シール
にてシールして成る現像装置において、前記端部シール
とブレードとを接着し、或いは前記端部シールの内側
に、該端部シールへの現像剤の流入規制及び端部シール
内側近傍の前記現像剤担持体への現像剤塗布規制のため
の第１の規制部材を設け、或いは前記端部シールの内側
側壁に斜面部を設け、少なくとも該斜面部の現像容器後
方側に現像剤が流れ込む空間を形成したため、高いシー
ル性を確保して現像剤の漏れを確実に防ぐことができる
現像装置を提供することができるという効果が得られ
る。As is apparent from the above description, according to the present invention, at least the developer carrying member and the blade are provided in the opening of the developing container for containing the developer, and both ends of the developer carrying member and the blade are provided. In a developing device in which a joint portion between a developing section and a developing container is sealed with an end seal, the end seal and the blade are adhered to each other, or a developer for the end seal is provided inside the end seal. A first regulating member for regulating the inflow of the toner and regulating the application of the developer to the developer carrier near the inside of the end seal, or a slope portion is provided on the inner side wall of the end seal, and at least the slope portion Since the space into which the developer flows is formed on the rear side of the developing container, it is possible to provide an effect that it is possible to provide a developing device capable of ensuring a high sealing property and reliably preventing the developer from leaking.
【図１】第１発明の第１実施例に係る現像装置要部（現
像剤担持体部分）の側断面図である。FIG. 1 is a side sectional view of a main portion of a developing device (developer carrying member portion) according to a first embodiment of the first invention.
【図２】第１発明の第１実施例に係る現像装置の現像剤
担持体を取り外した状態の部分正面図である。FIG. 2 is a partial front view of the developing device according to the first embodiment of the first aspect of the invention with the developer carrier removed.
【図３】第１発明の第１実施例に係る現像装置のブレー
ドと端部シールの分解斜視図である。FIG. 3 is an exploded perspective view of a blade and an end seal of the developing device according to the first embodiment of the first invention.
【図４】第１発明の第１実施例に係る現像装置要部の分
解斜視図である。FIG. 4 is an exploded perspective view of a main part of the developing device according to the first embodiment of the first invention.
【図５】第１発明の第２実施例を示すブレードと端部シ
ールの分解斜視図である。FIG. 5 is an exploded perspective view of a blade and an end seal showing a second embodiment of the first invention.
【図６】第１発明の第２実施例を示すブレードと端部シ
ールの斜視図である。FIG. 6 is a perspective view of a blade and an end seal showing a second embodiment of the first invention.
【図７】第１発明の第３実施例を示すブレードと端部シ
ールの分解斜視図である。FIG. 7 is an exploded perspective view of a blade and an end seal showing a third embodiment of the first invention.
【図８】第１発明の第４実施例を示すブレードと端部シ
ールの斜視図である。FIG. 8 is a perspective view of a blade and an end seal showing a fourth embodiment of the first invention.
【図９】第２発明の第１実施例に係る現像装置要部（現
像剤担持体部分）の側断面図である。FIG. 9 is a side sectional view of a main part of a developing device (developer carrier portion) according to the first embodiment of the second invention.
【図１０】第２発明の第１実施例に係る現像装置の現像
剤担持体を取り外した状態の部分正面図である。FIG. 10 is a partial front view of the developing device according to the first embodiment of the second invention with the developer carrier removed.
【図１１】第２発明の第２実施例に係る現像装置要部
（現像剤担持体部分）の側断面図である。FIG. 11 is a side sectional view of a main part of a developing device (developer carrier portion) according to a second embodiment of the second invention.
【図１２】第２発明の第２実施例に係る現像装置の現像
剤担持体を取り外した状態の部分正面図である。FIG. 12 is a partial front view of the developing device according to the second embodiment of the second invention with the developer carrier removed.
【図１３】第２発明の第３実施例を示すブレードと端部
シールの分解斜視図である。FIG. 13 is an exploded perspective view of a blade and an end seal showing a third embodiment of the second invention.
【図１４】第２発明の第４実施例を示すブレードと端部
シールの分解斜視図である。FIG. 14 is an exploded perspective view of a blade and an end seal showing a fourth embodiment of the second invention.
【図１５】第３発明の第１実施例に係る現像装置要部の
側断面図である。FIG. 15 is a side sectional view of a main part of the developing device according to the first embodiment of the third invention.
【図１６】第３発明の第１実施例に係る現像装置現像剤
担持体を取り外した状態の部分正面図である。FIG. 16 is a partial front view of the developing device developer carrier according to the first embodiment of the third invention with the developer carrying member removed.
【図１７】第３発明の第１実施例に係る現像装置要部の
現像剤担持体端部のシール構造を示す部分斜視図であ
る。FIG. 17 is a partial perspective view showing the seal structure at the end of the developer carrier of the main part of the developing device according to the first embodiment of the third invention.
【図１８】第３発明の第１実施例に係る現像装置要部の
現像剤担持体端部のシール構造を示す部分平断面図であ
る。FIG. 18 is a partial plan sectional view showing a seal structure of an end portion of a developer carrier of a main part of a developing device according to a first embodiment of the third invention.
【図１９】第３発明の第２実施例に係る現像装置要部の
側断面図である。FIG. 19 is a side sectional view of a main part of a developing device according to a second embodiment of the third invention.
【図２０】第３発明の第２実施例に係る現像装置の現像
剤担持体を取り外した状態の部分正面図である。FIG. 20 is a partial front view of the developing device according to the second embodiment of the third invention with the developer carrier removed.
【図２１】第３発明の第２実施例に係る現像装置の現像
剤担持体端部のシール構造を示す部分平断面図である。FIG. 21 is a partial plan cross-sectional view showing a seal structure of an end portion of a developer carrier of a developing device according to a second embodiment of the third invention.
【図２２】第３発明の第３実施例に係る現像装置の現像
剤担持体端部のシール構造を示す部分斜視図である。FIG. 22 is a partial perspective view showing a seal structure of an end portion of a developer carrier of a developing device according to a third embodiment of the third invention.
【図２３】第３発明の第３実施例に係る現像装置の現像
剤担持体端部のシール構造を示す部分平断面図である。FIG. 23 is a partial plan cross-sectional view showing a seal structure of an end portion of a developer carrier of a developing device according to a third embodiment of the third invention.
【図２４】第３発明の第４実施例に係る現像装置の現像
剤担持体端部のシール構造を示す部分平断面図である。FIG. 24 is a partial plan sectional view showing a seal structure at an end of a developer carrier of a developing device according to a fourth embodiment of the third invention.
【図２５】従来の現像装置の斜視図である。FIG. 25 is a perspective view of a conventional developing device.
【図２６】従来の現像装置要部の側断面図である。FIG. 26 is a side sectional view of a main part of a conventional developing device.
【図２７】現像装置の現像剤担持体を取り外した状態の
部分正面図である。FIG. 27 is a partial front view of the developing device with the developer carrier removed.
１ 現像容器 ２ 現像剤担持体 ３ ブレード ４ スクイシート ５ 端部シール ５Ａ 端部シールの嵌合部 ５Ｂ 端部シールの切欠溝 ５Ｃ 端部シールの斜面部 ６ 第１の規制部材 ７ 第２の規制部材 ８ 第１、第２規制部材を一体化して成る規制部材 １７ パッキング部材 １８ ブレード保持部材 1 developer container 2 Developer support 3 blades 4 Squishy sheet 5 Edge seal 5A End seal fitting part 5B End seal notch 5C End seal slope 6 First regulating member 7 Second restriction member 8 A regulating member formed by integrating the first and second regulating members 17 Packing material 18 Blade holding member
Claims (12)
少なくとも現像剤担持体とブレードを設け、これら現像
剤担持体とブレードの両端部と現像容器との接合部を端
部シールにてシールして成る現像装置において、前記端
部シールとブレードとを接着したことを特徴とする現像
装置。1. An opening of a developing container for containing a developer,
In a developing device in which at least a developer carrying member and a blade are provided, and both end portions of the developer carrying member and the blade and a joining portion of the developing container are sealed with an end seal, the end seal and the blade are bonded to each other. A developing device characterized in that
該嵌合部にブレードが嵌合された状態で該ブレードが端
部シールに接着されることを特徴とする請求項１記載の
現像装置。2. A fitting portion is formed on the end seal,
The developing device according to claim 1, wherein the blade is bonded to the end seal in a state where the blade is fitted in the fitting portion.
部にパッキング部材を接着したことを特徴とする請求項
１記載の現像装置。3. The developing device according to claim 1, wherein a packing member is bonded to a joint portion of the blade with the end seal.
記端部シールの嵌合部に嵌合して接着したことを特徴と
する請求項１又は２記載の現像装置。4. The developing device according to claim 1, wherein the blade and a holding member for the blade are fitted and bonded to a fitting portion of the end seal.
少なくとも現像剤担持体を設け、該現像剤担持体の両端
部と現像容器との接合部を端部シールにてシールして成
る現像装置において、前記端部シールの内側に、該端部
シールへの現像剤の流入規制及び端部シール内側近傍の
前記現像剤担持体への現像剤塗布規制のための第１の規
制部材を設けたことを特徴とする現像装置。5. An opening of a developing container for containing a developer,
In a developing device which is provided with at least a developer carrying member and seals the joint between the both ends of the developer carrying member and the developing container with end seals, inside the end seal, to the end seal The developing device is provided with a first regulating member for regulating the inflow of the developer and regulating the application of the developer to the developer carrier near the inside of the end seal.
トにて構成され、前記端部シールに比較して小さい圧力
で現像剤担持体に当接されることを特徴とする請求項５
記載の現像装置。6. The first regulating member is made of foam or felt and is brought into contact with the developer carrying member with a pressure smaller than that of the end seal.
The developing device described.
裏面の端部シール内側部にも、端部シールへの現像剤の
流入規制及び前記規制部材への現像剤の侵入を規制する
ための第２の規制部材を設けたことを特徴とする請求項
５又は６記載の現像装置。7. The inside of the end seal on the back surface of the blade that comes into contact with the developer carrying member is provided for restricting the inflow of the developer into the end seal and the intrusion of the developer into the restricting member. The developing device according to claim 5, further comprising a second regulating member.
一体化したことを特徴とする請求項７記載の現像装置。8. The developing device according to claim 7, wherein the first regulating member and the second regulating member are integrated.
部材の一方又は両方を一体化したことを特徴とする請求
項７記載の現像装置。9. The developing device according to claim 7, wherein the end seal and one or both of the first and second regulating members are integrated.
少なくとも現像剤担持体とブレードを設け、これら現像
剤担持体とブレードの両端部と現像容器との接合部を端
部シールにてシールして成る現像装置において、前記端
部シールの内側側壁に斜面部を設け、少なくとも該斜面
部の現像容器後方側に現像剤が流れ込む空間を形成した
ことを特徴とする現像装置。10. An opening of a developing container for containing a developer,
In a developing device having at least a developer carrying member and a blade, and sealing the joint between the developer carrying member and the blade and the developing container with an end seal, a sloped surface is formed on the inner side wall of the end seal. A developing device, characterized in that a space into which a developer flows is formed at least on the rear side of the developing container of the inclined surface portion.
にも斜面部を設けたことを特徴とする請求項１０記載の
現像装置。11. The developing device according to claim 10, wherein a slope portion is also provided on an inner wall of the end seal on the back surface of the blade.
によって形成されることを特徴とする請求項１０又は１
１記載の現像装置。12. The inclined surface portion is formed by a member separate from the end seal.
1. The developing device according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3206113A JPH0527574A (en) | 1991-07-24 | 1991-07-24 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3206113A JPH0527574A (en) | 1991-07-24 | 1991-07-24 | Developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0527574A true JPH0527574A (en) | 1993-02-05 |
Family
ID=16518017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3206113A Pending JPH0527574A (en) | 1991-07-24 | 1991-07-24 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0527574A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6978099B2 (en) | 2002-09-06 | 2005-12-20 | Canon Kabushiki Kaisha | Developing apparatus, process cartridge, and electrophotographic image forming apparatus including an elastic member preventing a gap between a developing agent carrier and a layer thickness limiter from changing, and an electrophotographic image forming apparatus detachably mounting such process cartridge |
| JP2008058565A (en) * | 2006-08-31 | 2008-03-13 | Brother Ind Ltd | Developing device, image carrier device, and image forming apparatus |
| US7865109B2 (en) | 2007-06-25 | 2011-01-04 | Oki Data Corporation | Developing apparatus and image forming apparatus |
| JP2012118189A (en) * | 2010-11-30 | 2012-06-21 | Brother Ind Ltd | Developing apparatus |
| JP2013134355A (en) * | 2011-12-26 | 2013-07-08 | Canon Inc | Cartridge |
-
1991
- 1991-07-24 JP JP3206113A patent/JPH0527574A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6978099B2 (en) | 2002-09-06 | 2005-12-20 | Canon Kabushiki Kaisha | Developing apparatus, process cartridge, and electrophotographic image forming apparatus including an elastic member preventing a gap between a developing agent carrier and a layer thickness limiter from changing, and an electrophotographic image forming apparatus detachably mounting such process cartridge |
| JP2008058565A (en) * | 2006-08-31 | 2008-03-13 | Brother Ind Ltd | Developing device, image carrier device, and image forming apparatus |
| US7865109B2 (en) | 2007-06-25 | 2011-01-04 | Oki Data Corporation | Developing apparatus and image forming apparatus |
| JP2012118189A (en) * | 2010-11-30 | 2012-06-21 | Brother Ind Ltd | Developing apparatus |
| JP2013134355A (en) * | 2011-12-26 | 2013-07-08 | Canon Inc | Cartridge |
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