JPH07219343A - Process cartridge - Google Patents
Process cartridgeInfo
- Publication number
- JPH07219343A JPH07219343A JP6007646A JP764694A JPH07219343A JP H07219343 A JPH07219343 A JP H07219343A JP 6007646 A JP6007646 A JP 6007646A JP 764694 A JP764694 A JP 764694A JP H07219343 A JPH07219343 A JP H07219343A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- magnetic
- process cartridge
- seal member
- 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.)
- Granted
Links
Landscapes
- Electrophotography Configuration And Component (AREA)
- Dry Development In Electrophotography (AREA)
- Cleaning In Electrography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、記録媒体に画像を形成
する画像形成装置に着脱可能な、画像形成手段を一つの
筐体に収めたプロセスカートリッジに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process cartridge which is detachably mountable to an image forming apparatus for forming an image on a recording medium and which houses image forming means in one housing.
【０００２】[0002]
【従来の技術】プリンタや複写機等の画像形成装置は、
一様に帯電させた像担持体に選択的な露光をして潜像を
形成し、この潜像を現像剤担持体に付着したトナーで顕
像化すると共に、該トナー像を記録媒体に転写して画像
記録を行なう。このような装置にあっては、トナーが無
くなる都度補給しなければならないが、この卜ナーの補
給作業が煩わしいばかりか、汚れを伴うこともある。ま
た、各部材のメンテナンスは専門のサービスマンでなけ
れば行なうことが出来ず、ユーザーには不便を伴うこと
が多かった。2. Description of the Related Art Image forming apparatuses such as printers and copying machines are
A latent image is formed by selectively exposing the uniformly charged image carrier to form a latent image, and the latent image is visualized by the toner attached to the developer carrier, and the toner image is transferred to a recording medium. To record an image. In such a device, the toner must be replenished each time it runs out, but this toner replenishment work is not only troublesome, but it may be contaminated. Further, maintenance of each member can be performed only by a specialized service person, and the user is often inconvenient.
【０００３】そこで、前記像担持体、帯電手段、現像手
段、クリーニング手段等を一体構造にまとめてカートリ
ッジ化することにより、ユーザーが前記カートリッジを
装置本体に装填することによって、 トナーの補給や寿
命に達した像担持体の部品交換を可能とし、メンテナン
スを容易にしたものが実用化されている。Therefore, the image carrier, the charging means, the developing means, the cleaning means and the like are integrally formed into a cartridge so that a user can load the cartridge into the main body of the apparatus to replenish the toner and extend the life. It has been put into practical use that the parts of the reached image carrier can be replaced and the maintenance is easy.
【０００４】このようなプロセスカートリッジにおい
て、回転する現像剤担持体（現像スリーブ）の両端部に
は、現像領域外へ現像剤（トナー）が流出するのを防止
するためのシール部材が設けてある。従来、この現像剤
の流出を防ぐシール部材にはフェルトや発泡ゴム等の弾
性体が広く利用されている。その代表的な例を図５、及
び図６に示す。図５は従来プロセスカートリッジの断面
構成図、図６は現像器要部の縦断面構成図である。In such a process cartridge, seal members for preventing the developer (toner) from flowing out of the developing area are provided at both ends of the rotating developer carrier (developing sleeve). . Conventionally, an elastic body such as felt or foamed rubber has been widely used as a seal member for preventing the developer from flowing out. Typical examples thereof are shown in FIGS. 5 and 6. FIG. 5 is a sectional configuration diagram of a conventional process cartridge, and FIG. 6 is a longitudinal sectional configuration diagram of a main part of a developing device.
【０００５】現像スリ一ブ４ａはその内部に磁石４ｂを
有し、トナー容器部３にスリーブ軸受け５を介して回転
可能に固定されている。前記トナー容器３から供給され
たトナーは磁力により前記現像スリーブ表面に付着し、
現像ブレード４ｃにより層厚が一定に規制された後、像
担持体（感光ドラム）１上の潜像にトナーが付着され
る。弾性シール部材４ｄは、前記現像スリーブ４ａの両
端部において、該現像スリーブに隣接する固定部例えば
トナー容器部３の前記感光ドラム１と対向する側に固定
されており、前記現像スリーブの外周面に圧着させるこ
とによりトナーの流出を防止している。前記現像スリー
ブ４ａは、容器部３に回転自在に支持されているが、該
スリーブに隣接する固定部であるハウジング等に回転自
在に支持することもでき、また像担持体１も同様に支持
することができる。The developing sleeve 4a has a magnet 4b therein and is rotatably fixed to the toner container portion 3 through a sleeve bearing 5. The toner supplied from the toner container 3 adheres to the surface of the developing sleeve by magnetic force,
After the layer thickness is regulated to be constant by the developing blade 4c, toner is attached to the latent image on the image carrier (photosensitive drum) 1. The elastic seal members 4d are fixed at both ends of the developing sleeve 4a to a fixing portion adjacent to the developing sleeve, for example, a side of the toner container portion 3 facing the photosensitive drum 1, and the outer peripheral surface of the developing sleeve. The pressure bonding prevents the toner from flowing out. Although the developing sleeve 4a is rotatably supported by the container portion 3, it may be rotatably supported by a housing or the like which is a fixed portion adjacent to the sleeve portion, and the image carrier 1 is also similarly supported. be able to.
【０００６】しかしながら、このような構成のものでは
現像スリーブ４ａの外周面に圧接した弾性シール部材４
ｄによる負荷が大きく、また、前記現像スリーブ４ａと
の接触により前記弾性シール部材４ｄが劣化し、シール
性が悪化する等の問題があった。更に、現像スリーブ４
ａと弾性シール部材４ｄとの間にわずかではあるがトナ
ーが侵入してしまう場合があり、この侵入したトナーが
凝集・融着を起こして画像に白スジ等の悪影響を及ぼす
ことがあった。However, with such a structure, the elastic seal member 4 is pressed against the outer peripheral surface of the developing sleeve 4a.
There is a problem that the load due to d is large, and the elastic seal member 4d is deteriorated due to contact with the developing sleeve 4a, and the sealing property is deteriorated. Further, the developing sleeve 4
The toner may intrude between the a and the elastic seal member 4d, though slightly, and the intruding toner may cause aggregation and fusion, which may adversely affect the image such as white streaks.
【０００７】そこでこれらの問題を解決すべく、現像ス
リーブの両端部に一定の間隙をもって磁生体のシール部
材を配置し、これによりトナーの流出を防止する方法が
提案されている。図７に磁性体シール部材を用いた現像
器要部の横断面構成図を示す。Therefore, in order to solve these problems, a method has been proposed in which a seal member of a magnetic body is arranged at both ends of the developing sleeve with a constant gap to prevent the toner from flowing out. FIG. 7 shows a cross-sectional configuration diagram of a main part of a developing device using a magnetic seal member.
【０００８】磁性体シール部材４ｄ′は現像スリーブ４
ａの両端部にその外周面と一定間隙ｇを隔て、卜ナー容
器３の感光ドラム１に対向する側に固定されている。前
記現像スリーブ４ａは磁石４ｂを内包しており、前記磁
性体シール部材４ｄ′と前記磁右４ｂの磁極との間に集
中磁界を形成し、前記間隙ｇにトナーを介在させ磁気ブ
ラシを形成することでトナーが現像領域外に流出するの
を防止している。The magnetic seal member 4d 'is the developing sleeve 4
The outer peripheral surface is fixed to both ends of a at a fixed gap g on the side of the toner container 3 facing the photosensitive drum 1. The developing sleeve 4a contains a magnet 4b, forms a concentrated magnetic field between the magnetic seal member 4d 'and the magnetic pole of the magnetic right 4b, and forms a magnetic brush by interposing toner in the gap g. This prevents the toner from flowing out of the developing area.
【０００９】この枝術的手殴を用いることにより、現像
スリーブと磁性体シール部材は非接触である為、現像ス
リーブの回転トルクは著しく小さく、従って、駆動モー
タも小型で低価格なもので良い。また摩耗等がないので
その使用は半永久的であり、リサイクルにも対応可能で
ある。Since the developing sleeve and the magnetic seal member are not in contact with each other by using this branching hand strike, the rotating torque of the developing sleeve is remarkably small. Therefore, the drive motor may be small and inexpensive. . In addition, since it has no wear or the like, its use is semi-permanent and can be recycled.
【００１０】[0010]
【発明が解決しようとする課題】しかしながら、前記磁
性体シール部材において、現像剤のシール能力は十分満
足がいくものではなっかった。特にプロセスカートリッ
ジのユーザー操作性を考慮した場合、例えば前記プロセ
スカートリッジを画像形成装置本体に装着する際などの
衝撃が加わる場合等は、現像剤のシール性に大きな不安
があった。However, in the above-mentioned magnetic material sealing member, the sealing ability of the developer has not been sufficiently satisfactory. In particular, when considering the user operability of the process cartridge, for example, when a shock is applied when the process cartridge is mounted on the main body of the image forming apparatus, there is great concern about the sealing property of the developer.
【００１１】従って、本発明の目的はユーザー操作性を
考慮したうえで衝撃等が加わった場合においてもシール
性能を十分に発揮し、なおかつ現像スリーブへの負荷が
小さく長期使用にも耐えうるシール部材及びプロセスカ
ートリッジを提供することである。Therefore, an object of the present invention is to provide a sealing member which, while considering user operability, exhibits a sufficient sealing performance even when a shock or the like is applied, and has a small load on the developing sleeve and can withstand long-term use. And to provide a process cartridge.
【００１２】[0012]
【課題を解決するための手段及び作用】上記目的を達成
するための本発明に係る代表的な構成は、現像剤を収容
した現像容器と、前記現像容器に回転自在に支持され、
内包する磁石により表面に現像剤を担持し搬送する現像
剤担持体とを有するプロセスカートリッジにおいて、前
記現像剤担持体の両端部に該現像剤担持体の外周面に一
定間隙をもって配置された磁性体シール部材の現像域側
に隣接し、該磁性体シール部材が対応する部分全周に渡
って現像剤担持体に当接するように弾性発泡体を設けた
構成としており、これにより、プロセスカートリッジの
ユーザー操作性を考慮した場合、例えば前記プロセスカ
ートリッジを画像形成装置本体に装着する際などの衝撃
が加わる場合であっても良好なシール性を発揮するもの
である。A typical structure according to the present invention for achieving the above object is a developing container containing a developer, and a rotatably supported by the developing container.
In a process cartridge having a developer carrying member for carrying and carrying a developer on the surface by a magnet contained therein, a magnetic material arranged at both ends of the developer carrying member with a constant gap on the outer peripheral surface of the developer carrying member. Adjacent to the developing area side of the seal member, an elastic foam body is provided so that the magnetic seal member contacts the developer carrier over the entire circumference of the corresponding portion. In consideration of operability, even if a shock is applied, for example, when the process cartridge is mounted on the main body of the image forming apparatus, good sealing performance is exhibited.
【００１３】[0013]
【実施例】以下、図面に沿って本発明の実施例について
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】＜実施例１＞図１に、本発明に係る画像形
成装置のプロセスカートリッジの慨略を図示する。この
プロセスカートリッジは、像担持体と、少なくとも１つ
のプロセス手段を備えたものである。ここでプロセス手
段としては、例えば像担持体の表面を帯電させる帯電手
段、像担持体にトナー像を形成する現像手段、像担持体
表面に残留した卜ナーを除去するためのクリーニング手
段等がある。本実施例のプロセスカートリッジは、図１
に示すように像担持体である電子写真感光体ドラム１の
周囲に帯電手段２、トナー（現像剤）による現像手段
４、及びクリーニング手段６を配置し、枠体７、８から
なるハウジングで覆って一体的にカートリッジ化し、画
像形成装置本体に対して着脱自在に構成している。像担
持体としての感光体ドラム１及び現像剤担持体としての
現像剤スリーブ４ａは、前記従来例と同様に回転自在に
支持されている。また図１において、４ｂは磁石、４ｃ
は現像ブレード、４ｄ′は磁性シール部材、６はクリー
ニング手段、６ａはクリーニングブレード、６ｂはスク
イシート、６ｃはクリーニング容器を示す。<Embodiment 1> FIG. 1 schematically shows a process cartridge of an image forming apparatus according to the present invention. This process cartridge comprises an image carrier and at least one process means. Here, as the process means, there are, for example, a charging means for charging the surface of the image carrier, a developing means for forming a toner image on the image carrier, a cleaning means for removing the toner remaining on the surface of the image carrier, and the like. . The process cartridge of this embodiment is shown in FIG.
As shown in FIG. 3, a charging unit 2, a developing unit 4 using toner (developer), and a cleaning unit 6 are arranged around an electrophotographic photosensitive drum 1 which is an image carrier, and are covered with a housing composed of frame bodies 7 and 8. Integrated into a cartridge, and is detachably attached to the main body of the image forming apparatus. The photosensitive drum 1 as an image carrier and the developer sleeve 4a as a developer carrier are rotatably supported as in the conventional example. In FIG. 1, 4b is a magnet and 4c.
Is a developing blade, 4d 'is a magnetic seal member, 6 is a cleaning means, 6a is a cleaning blade, 6b is a squeeze sheet, and 6c is a cleaning container.
【００１５】さて図２は本発明に係るプロセスカートリ
ッジにおける現像器要部の縦断面構成図、図３は現像器
要部の長手方向の断面構成図である。現像手段４には、
図７に説明したと同様に磁性体シール部材４ｄ′が現像
スリーブ４ａの両端部にその外周面と一定間隙ｇを隔
て、感光ドラム１に対向する側にトナー容器３に固定さ
れており、前記磁性体シール部材４ｄ′と前記現像スリ
ーブ４ａに内包される磁石４ｂの磁極との間に集中磁界
を形成し、前記間隙ｇにトナーを介在させ磁気ブラシを
形成することでトナーが現像領域外に流出するのを防止
している。FIG. 2 is a vertical cross-sectional view of the main part of the developing device in the process cartridge according to the present invention, and FIG. 3 is a cross-sectional view of the main part of the developing device in the longitudinal direction. The developing means 4 includes
As described in FIG. 7, magnetic seal members 4d 'are fixed to the toner container 3 on both sides of the developing sleeve 4a on the side facing the photosensitive drum 1 with a constant gap g from the outer peripheral surface thereof. By forming a concentrated magnetic field between the magnetic seal member 4d 'and the magnetic pole of the magnet 4b contained in the developing sleeve 4a and forming a magnetic brush with the toner interposed in the gap g, the toner is moved outside the developing area. It prevents it from leaking.
【００１６】本発明に従えば、前記磁性体シール部材４
ｄ′の現像領域側に隣接して、当接シール部材としての
弾性発泡体４ｅが、前記磁性体シール部材４ｄ′の対応
する部分の全周に渡って現像スリ一ブ４ａに当接するよ
うに設けられている。前記弾性発泡体４ｅにはモルトプ
レンやテフロンフェルト等が好適である。また前記弾性
発泡体４ｅは、ユ一ザー操作時等にプロセスカートリッ
ジの長手方向に衝撃が加わるとき、トナーが磁性体シー
ル部材４ｄ´と現像スリーブ４ａの間隙ｇへ衝撃的に流
出しようとするのを防ぐ機能をなすものであり、通常画
像形成装置本体に装着して使用する際には特に機能しな
くてもよい。従って、その現像スリーブ４ａへの当接量
は軽く接する程度で良く、従来磁性体シール部材４ｄ′
のみの場合と比べ、さほど付加を与えることなく衝撃時
等にも良好なシール性を発揮することができる。さらに
現像スリーブ４ａへの負荷が小さい分、弾性発泡体４ｅ
の劣化も少なく、長期使用にも耐え得ることができる。According to the present invention, the magnetic seal member 4 is used.
Adjacent to the developing area side of d ', the elastic foam body 4e as a contact seal member contacts the developing sleeve 4a over the entire circumference of the corresponding portion of the magnetic seal member 4d'. It is provided. Moltoprene, Teflon felt, or the like is suitable for the elastic foam 4e. Further, in the elastic foam body 4e, when a shock is applied in the longitudinal direction of the process cartridge during a user operation, the toner tends to shockly flow into the gap g between the magnetic seal member 4d 'and the developing sleeve 4a. It does not have to function particularly when it is mounted on the main body of the image forming apparatus for use. Therefore, the amount of contact with the developing sleeve 4a need only be lightly contacted, and the conventional magnetic material seal member 4d 'is used.
Compared with the case of only, the good sealing property can be exhibited even at the time of impact without adding much. Further, since the load on the developing sleeve 4a is small, the elastic foam 4e
It has little deterioration and can withstand long-term use.
【００１７】＜実施例２＞以下、図４に添って、実施例
２を説明する。<Second Embodiment> A second embodiment will be described below with reference to FIG.
【００１８】実施例１において弾性発泡体４ｅが、前記
磁性体シール部材４ｄ′の対応する部分の全周に渡って
現像スリーブ４ａに当接するように設けられている例を
示したが、前記弾性発泡体４ｅの当接は磁性体シール部
材４ｄ′の対応する部分の全周に及ばなくてもよい。従
来磁性体シール部材４ａを用いたプロセスカートリッジ
において、ユーザー操作時等に衝撃が加わると磁性体シ
ール部材４ｄ′と現像スリーブ４ａの間隙ｇにおいて、
磁石４ｂに着磁された磁極と磁極の間、即ち磁力の弱い
部分においてトナーの流出が発生した。そこで実施例２
では、前記磁性体シール部材４ｄ´の現像領域側に隣接
して設けられた弾性発泡体４ｅが、前記現像スリーブ４
ａに内包された磁石４ｂに着磁された磁極と磁極の間
の、磁力の弱い部分のみに設けられた構成にしている。
この構成においても実施例１と同様、良好なシール性を
発揮することができ、また実施例１よりもさらに負荷を
軽減することができる。In the first embodiment, the elastic foam body 4e is provided so as to come into contact with the developing sleeve 4a over the entire circumference of the corresponding portion of the magnetic body seal member 4d '. The contact of the foam 4e does not have to reach the entire circumference of the corresponding portion of the magnetic seal member 4d '. In the conventional process cartridge using the magnetic material seal member 4a, when a shock is applied at the time of user's operation or the like, in the gap g between the magnetic material seal member 4d 'and the developing sleeve 4a,
The toner flows out between the magnetic poles magnetized by the magnet 4b, that is, in the portion where the magnetic force is weak. Therefore, Example 2
Then, the elastic foam 4e provided adjacent to the developing area side of the magnetic seal member 4d 'is the developing sleeve 4
Between the magnetic poles magnetized by the magnet 4b included in a and between the magnetic poles, only the portion where the magnetic force is weak is provided.
With this configuration, as in the case of the first embodiment, good sealing performance can be exhibited, and the load can be further reduced as compared with the first embodiment.
【００１９】上記実施例において、当接シール部材は、
弾性発泡体の例で説明したが、その他、現像剤担持体の
該周面に弾性的に当接し得る部材即ち、織布、不織布、
軟弾性樹脂等を使用することができ、また、当接シール
部材は磁性シール部材より外側に配置することができ
る。In the above embodiment, the contact seal member is
Although the elastic foam has been described as an example, other members that can elastically contact the peripheral surface of the developer carrying member, that is, woven fabric, non-woven fabric,
A soft elastic resin or the like can be used, and the contact seal member can be arranged outside the magnetic seal member.
【００２０】[0020]
【発明の効果】以上に説明したように本発明によれば、
現像剤を収容した現像容器と、内包する磁石により表面
に現像剤を担持し搬送する回転自在の現像剤担持体とを
有するプロセスカートリッジにおいて、前記現像剤担持
体の両端部に現像担持体の外周面に一定間隙をもって配
置された磁性体シール部材の現像領域側に隣接して、当
接シール部材が前記磁性体シール部材の対応する部分の
全周に渡って現像剤担持体に当接するように設けられた
構成としており、これにより、プロセスカートリッジの
ユーザー操作性を考慮した場合、例えば前記プロセスカ
ートリッジを画像形成装置本体に装着する際などの衝撃
が加わる場合であっても良好なシール性を発揮するもの
である。As described above, according to the present invention,
In a process cartridge having a developer container containing a developer and a rotatable developer carrier for carrying and carrying the developer by a magnet contained therein, an outer periphery of the developer carrier is provided at both ends of the developer carrier. Adjacent to the developing area side of the magnetic material seal member arranged on the surface with a constant gap, the contact seal member contacts the developer carrier over the entire circumference of the corresponding portion of the magnetic material seal member. With this configuration, when the user-friendliness of the process cartridge is taken into consideration, good sealing performance is achieved even when shock is applied, for example, when the process cartridge is mounted on the main body of the image forming apparatus. To do.
【図１】本発明に係る実施例１のプロセスカートリッジ
の主横断面構成図FIG. 1 is a main cross-sectional configuration diagram of a process cartridge according to a first embodiment of the present invention.
【図２】本発明に係る実施例１の現像器要部の縦断面構
成図FIG. 2 is a vertical cross-sectional configuration diagram of essential parts of a developing device according to a first embodiment of the present invention.
【図３】本発明に係る実施例１の現像器要部の横断面構
成図FIG. 3 is a cross-sectional configuration diagram of a main part of the developing device according to the first embodiment of the present invention.
【図４】本発明に係る実施例２の現像器要部の横断面構
成図FIG. 4 is a cross-sectional configuration diagram of a main part of a developing device according to a second embodiment of the present invention.
【図５】従来プロセスカートリッジの現像器の主横断面
構成図FIG. 5 is a main cross-sectional configuration diagram of a developing device of a conventional process cartridge.
【図６】従来プロセスカートリッジの現像器要部の縦断
面構成図FIG. 6 is a vertical cross-sectional configuration diagram of a main part of a developing device of a conventional process cartridge.
【図７】磁性体シール部材を用いた従来プロセスカート
リッジの現像器要部の横断面構成図FIG. 7 is a lateral cross-sectional configuration diagram of a main part of a developing device of a conventional process cartridge using a magnetic seal member.
１…感光ドラム、２…帯電手段、３…トナー容器、４…
現像手段、４ａ…現像スリーブ、４ｂ…磁石、４ｃ…現
像ブレード、４ｄ…弾性シール部材、４ｄ′…磁性体シ
ール部材、４ｅ…弾性発泡体、５…スリーブ軸受け、６
…クリーニング手段、６ａ…クリ一ニングフレード、６
ｂ…スクイシート、６ｃ…クリーニング容器、７…上枠
体、８…下枠体、ｇ…現像スリーブ・磁性体シール部材
の間隙1 ... Photosensitive drum, 2 ... Charging means, 3 ... Toner container, 4 ...
Developing means, 4a ... Developing sleeve, 4b ... Magnet, 4c ... Developing blade, 4d ... Elastic sealing member, 4d '... Magnetic sealing member, 4e ... Elastic foam, 5 ... Sleeve bearing, 6
... cleaning means, 6a ... cleaning flade, 6
b ... Squeeze sheet, 6c ... Cleaning container, 7 ... Upper frame, 8 ... Lower frame, g ... Gap between developing sleeve and magnetic seal member
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０３Ｇ 21/10 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location G03G 21/10
Claims (2)
により現像剤を担持し搬送する回転自在の現像剤担持体
を有する現像手段と、クリーニング手段を有する、画像
形成装置本体に着脱自在なプロセスカートリッジにおい
て、前記現像剤担持体の両端部には、該現像剤担持体の
外周面と所定間隙をもって磁性体シール部材を配置し、
該磁性体シール部材と該現像剤担持体に内包された磁石
との間に磁界を形成し、該間隙部に磁力線に沿って現像
剤の磁気ブラシを形成することによって現像剤の外部へ
の流出を防止する構成であり、更に該磁性体シール部材
の現像領域側に隣接し、該磁性体シール部材が対応する
部分全周に渡って該現像剤担持体に当接するように弾性
発泡体を設けたことを特徴とするプロセスカートリッ
ジ。1. An image carrier, a developing means having a rotatable developer carrier for carrying and carrying a developer by arranging a magnet therein, and a cleaning means. In another process cartridge, magnetic material sealing members are arranged at both ends of the developer carrying member with a predetermined gap from the outer peripheral surface of the developer carrying member,
A magnetic field is formed between the magnetic seal member and a magnet contained in the developer carrying member, and a magnetic brush of the developer is formed in the gap along the lines of magnetic force, so that the developer flows out. Further, an elastic foam is provided so as to be adjacent to the developing area side of the magnetic material seal member and to come into contact with the developer carrying member over the entire circumference of the corresponding portion of the magnetic material seal member. A process cartridge characterized by that.
磁極と磁極の間のみ、該現像剤担持体に当接するように
設けられている事を特徴とする請求項１記載のプロセス
カートリッジ。2. The elastic foam is provided so as to come into contact with the developer bearing member only between magnetic poles magnetized by the magnet. Process cartridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00764694A JP3258480B2 (en) | 1994-01-27 | 1994-01-27 | Process cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00764694A JP3258480B2 (en) | 1994-01-27 | 1994-01-27 | Process cartridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07219343A true JPH07219343A (en) | 1995-08-18 |
| JP3258480B2 JP3258480B2 (en) | 2002-02-18 |
Family
ID=11671596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00764694A Expired - Fee Related JP3258480B2 (en) | 1994-01-27 | 1994-01-27 | Process cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3258480B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070027A (en) * | 1997-12-02 | 2000-05-30 | Canon Kabushiki Kaisha | Developing apparatus with auxiliary seal disposed outside of end seal |
| JP2006071795A (en) * | 2004-08-31 | 2006-03-16 | Kyocera Mita Corp | Developing apparatus and image forming apparatus equipped with the same |
| JP2011191369A (en) * | 2010-03-12 | 2011-09-29 | Fuji Xerox Co Ltd | Developing device and image forming apparatus using the same |
| 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 |
| JP2015036760A (en) * | 2013-08-13 | 2015-02-23 | 京セラドキュメントソリューションズ株式会社 | Developing device and image forming apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9308583B2 (en) | 2013-03-05 | 2016-04-12 | Lawrence Livermore National Security, Llc | System and method for high power diode based additive manufacturing |
| US10747033B2 (en) | 2016-01-29 | 2020-08-18 | Lawrence Livermore National Security, Llc | Cooler for optics transmitting high intensity light |
-
1994
- 1994-01-27 JP JP00764694A patent/JP3258480B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070027A (en) * | 1997-12-02 | 2000-05-30 | Canon Kabushiki Kaisha | Developing apparatus with auxiliary seal disposed outside of end seal |
| JP2006071795A (en) * | 2004-08-31 | 2006-03-16 | Kyocera Mita Corp | Developing apparatus and image forming apparatus equipped with the same |
| JP2011191369A (en) * | 2010-03-12 | 2011-09-29 | Fuji Xerox Co Ltd | Developing device and image forming apparatus using the same |
| 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 |
| JP2015036760A (en) * | 2013-08-13 | 2015-02-23 | 京セラドキュメントソリューションズ株式会社 | Developing device and image forming apparatus |
| CN104375404A (en) * | 2013-08-13 | 2015-02-25 | 京瓷办公信息系统株式会社 | Developing device and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3258480B2 (en) | 2002-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |