JP2008152183A - Developing device and image forming apparatus - Google Patents

Developing device and image forming apparatus Download PDF

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JP2008152183A
JP2008152183A JP2006342473A JP2006342473A JP2008152183A JP 2008152183 A JP2008152183 A JP 2008152183A JP 2006342473 A JP2006342473 A JP 2006342473A JP 2006342473 A JP2006342473 A JP 2006342473A JP 2008152183 A JP2008152183 A JP 2008152183A
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toner
developing device
conveying
substrate
latent image
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Nobuaki Kondo
信昭 近藤
Masanori Horiie
正紀 堀家
Yoshinori Nakagawa
悦典 中川
Masaaki Yamada
山田  正明
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a developing device using a joint belt as a toner conveying means, where the joint area of the belt does not directly participate in image formation, and also, the influence at the joining process is not given to conveying electrodes, then, a high-quality image is obtained. <P>SOLUTION: The toner conveying member 3 having the conveying electrodes 15, 16 and 17 for relatively moving the toner on the surface thereof related to the surface thereof with an electrostatic force, and then, conveying the toner to a developing area facing a latent image carrier 1 is cylindrically formed while joining the joint areas X and X of the toner conveying substrate 13 formed of insulating material. The joint area X of the toner conveying substrate 13 is positioned on the upstream side of the developer carrier 4 in the toner conveying direction and on the downstream side of a toner recovery means 11 in the toner conveying direction. Further, the conveying electrodes 15, 16 and 17 are not disposed in the joint area X of the toner conveying substrate 13. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、電子写真方式の現像装置及び画像形成装置に関するものである。   The present invention relates to an electrophotographic developing device and an image forming apparatus.

従来、現像装置のトナー搬送手段として、表面上のトナーを静電気力によって該表面に対し相対移動させ潜像担持体に対向する現像領域に向けて搬送するための搬送電極を備えたものが提案されている(特許文献1、2、3)。このトナー搬送手段では、各搬送電極に対して多相電圧を印加し進行波電界を形成する。この電界の作用によって、各搬送電極近傍の帯電トナーが順次所定方向に力を受けてホッピングしながら現像領域まで搬送される。また、別のトナー搬送手段として、表面上のトナーを静電気力によってクラウド化するための搬送電極を有し、潜像担持体に対向する現像領域に向けて回転によりトナーを搬送するものが提案されている。このトナー搬送手段では、一対の電極に互いに異なるパルス電圧を印加して2相波電界を形成する。この電界の作用によって各搬送電極近傍の帯電トナーをホッピングさせてクラウド化する。また、特許文献4では、静電気力により用紙を支持するための電極が一定の間隔で形成された樹脂膜ベルトの製造方法も提案されている。   2. Description of the Related Art Conventionally, as a toner conveying means of a developing device, an apparatus having a conveying electrode for moving toner on a surface relative to the surface by electrostatic force and conveying the toner toward a developing area facing a latent image carrier is proposed. (Patent Documents 1, 2, and 3). In this toner conveying means, a multiphase voltage is applied to each conveying electrode to form a traveling wave electric field. By the action of this electric field, the charged toner near each of the transport electrodes is transported to the developing region while receiving a force in a predetermined direction and hopping. As another toner transporting means, a transporting electrode for clouding toner on the surface by electrostatic force and transporting the toner by rotation toward a developing region facing the latent image carrier is proposed. ing. In this toner conveying means, two-phase wave electric fields are formed by applying different pulse voltages to a pair of electrodes. The charged toner in the vicinity of each transport electrode is hopped by the action of the electric field to form a cloud. Patent Document 4 also proposes a method of manufacturing a resin film belt in which electrodes for supporting a sheet by electrostatic force are formed at regular intervals.

ところで、電子写真方式の画像形成装置においては、無端ベルト形状を有する部材(以下、ベルトという)が潜像担持体、現像、転写搬送、定着用の部材として広く用いられている。ここで、ベルトは、複数の軸に巻き回して使用する場合と、真円状いわゆる円筒形状で使用する場合とがある。しかし、特許文献2のようにベルトを複数の軸に巻き回して使用する場合には、円筒形状で使用する場合に比べ、装置を構成する部品点数が多くなり、コンパクト化が図れず重量も増すことになり、コストアップになる。   By the way, in an electrophotographic image forming apparatus, a member having an endless belt shape (hereinafter referred to as a belt) is widely used as a latent image carrier, development, transfer conveyance, and fixing member. Here, the belt may be used by being wound around a plurality of shafts, or may be used in a so-called cylindrical shape. However, when the belt is wound around a plurality of shafts and used as in Patent Document 2, the number of parts constituting the device is increased compared to the case where the belt is used in a cylindrical shape, and the size cannot be reduced and the weight is increased. That will increase costs.

また、ベルトに使用される材質としては、金属と樹脂に2大別される。樹脂材料を用いる樹脂ベルトは、金属材料を用いる金属ベルトに比べ一般に引っ張りに対する機械強度が弱く、耐熱性に劣る短所を有するが、形成時のプロセス温度や、実用時の諸条件を考慮すれば、問題となる場合は少ない。逆に、長所としては、高精度な厚み・寸法の達成が容易であり、屈曲に対しても良好な耐久性を有している。このようなことから、特に強い耐熱性を必要とする用途を除くと、樹脂ベルトが多く用いられている。   The materials used for the belt are roughly divided into two types: metal and resin. Resin belts using resin materials are generally weaker in mechanical strength against tension than metal belts using metal materials and have poor heat resistance, but considering the process temperature during formation and various conditions during practical use, There are few cases where it becomes a problem. On the other hand, as an advantage, it is easy to achieve highly accurate thickness and dimensions, and it has good durability against bending. For these reasons, resin belts are often used except for applications that require particularly high heat resistance.

樹脂ベルトはその製法により、継目のないシームレスベルト、及び継目のある接合ベルトに2大別され、用途・条件により使い分けされている。シームレスベルトの製法としては、円筒形状の型の内面、若しくは外面に樹脂を塗布・硬化させた後に脱型して得る方法がある。しかし、この製法は製造コストが高くなる。また、他の方法としては、熱可塑性樹脂を円筒形に押出す方法が挙げられる。この製法は加工速度が速いため製造コストが低く抑えられると言うメリットがある反面、高精度な膜厚・寸法の達成が一般に困難である。一方、樹脂ベルトの両端部を接合して得られる接合ベルトは、継目という接合領域が存在するものの、厚み・寸法の高精度化が比較的容易である。また、ベルトの表面にパターン形成等の加工処理が必要な場合には、断裁・接合前のフイルムの状態において前処理ができ、製造コストの低減が可能である。   Resin belts are roughly classified into seamless belts and joint belts with joints, depending on the production method. As a method for producing a seamless belt, there is a method obtained by removing a mold after applying and curing a resin on the inner surface or outer surface of a cylindrical mold. However, this manufacturing method increases the manufacturing cost. Another method includes a method of extruding a thermoplastic resin into a cylindrical shape. This manufacturing method has a merit that the manufacturing cost can be kept low because of the high processing speed, but it is generally difficult to achieve a highly accurate film thickness and dimensions. On the other hand, a joining belt obtained by joining both ends of a resin belt has a joining region called a seam, but it is relatively easy to increase the accuracy of thickness and dimensions. Further, when processing such as pattern formation is required on the surface of the belt, pretreatment can be performed in a film state before cutting and joining, and manufacturing costs can be reduced.

特許3090543号公報Japanese Patent No. 3090543 特許3530124号公報Japanese Patent No. 3530124 特許3569544号公報Japanese Patent No. 3567544 特許2792096号公報Japanese Patent No. 2792096

現像装置では、上述した点から、樹脂からなる接合ベルトが好ましく用いられる。しかしながら、接合ベルトの接合領域において接合幅や表面状態(凹凸等)が過剰に違うと、ベルト毎に寸法精度にバラツキが生じてしまう。その結果、例えばこの接合ベルトをトナー搬送手段として用いた場合、像担持体とのギャップや、クリーニング手段との摩擦・ギャップが変わり画像品質がばらつく原因となる。また、接合ベルトの両端部を熱圧着により接合する場合には、接合領域に上述した搬送電極があると、接合時の加圧・加熱の影響が搬送電極に及び、断線等のダメージを与えてしまう。   In the developing device, a joining belt made of resin is preferably used in view of the above points. However, if the joining width and surface state (unevenness, etc.) are excessively different in the joining region of the joining belt, the dimensional accuracy varies from belt to belt. As a result, for example, when this joining belt is used as a toner conveying means, the gap with the image carrier and the friction / gap with the cleaning means are changed, which causes variations in image quality. In addition, when joining the both ends of the joining belt by thermocompression bonding, if the above-mentioned transport electrode is present in the joining region, the influence of pressure and heating at the time of joining may affect the transport electrode and cause damage such as disconnection. End up.

本発明は以上の問題点に鑑みなされたものである。第1の目的とするところは、接合ベルトからなるトナー搬送手段を用いた現像装置において、接合領域が画像形成に直接関与せず、高品質な画像を得ることができる現像装置及び画像形成装置を提供することである。また、第2の目的とするところは、接合ベルトからなるトナー搬送手段を用いた現像装置において、接合時の影響が搬送電極に及ばず、高品質な画像を得ることができる現像装置及び画像形成装置を提供することである。   The present invention has been made in view of the above problems. A first object of the present invention is to provide a developing device and an image forming apparatus capable of obtaining a high-quality image in a developing device using a toner conveying unit including a joining belt, in which the joining region is not directly involved in image formation. Is to provide. Further, the second object is to provide a developing device using a toner conveying means including a joining belt, a developing device capable of obtaining a high-quality image without being affected by the joining electrode, and image formation. Is to provide a device.

上記目的を達成するために、請求項1の発明は、潜像を担持する潜像担持体と、表面上のトナーを静電気力によって該表面に対し相対移動させ該潜像担持体に対向する現像領域に向けて搬送するための搬送電極を有するトナー搬送手段と、該トナー搬送手段にトナーを供給するトナー供給手段と、該トナー搬送手段上のトナーを回収するトナー回収手段とを備える現像装置において、上記トナー搬送手段は、絶縁材料からなるトナー搬送基板の両端部に設けられる接合領域が接合されて円筒状に構成され、該トナー搬送基板の接合領域が該トナー供給手段よりも該トナー搬送手段のトナー搬送方向上流側にあって、該トナー回収手段よりも該トナー搬送手段のトナー搬送方向下流側にあることを特徴とするものである。
請求項2の発明は、請求項1の現像装置において、上記トナー搬送基板の接合領域には上記搬送電極を形成しないことを特徴とするものである。
請求項3の発明は、潜像を担持する潜像担持体と、表面上のトナーを静電気力によってクラウド化するための搬送電極を有し、該潜像担持体に対向する現像領域に向けて回転によりトナーを搬送するトナー搬送手段とを備える現像装置において、上記トナー搬送手段は、絶縁材料からなるトナー搬送基板の両端部に設けられる接合領域が接合されて円筒状に構成され、該トナー搬送基板の接合領域に上記搬送電極を形成しないことを特徴とするものである。
請求項4の発明は、請求項1、2又は3の現像装置において、上記トナー搬送基板の接合領域は、熱可塑性接着剤又は熱硬化型接着剤により接着されていることを特徴とするものである。
請求項5の発明は、請求項1、2、3又は4の現像装置において、上記トナー搬送基板の接合領域は、該トナー搬送基板の両端部が突き当てられた状態で接着されていることを特徴とするものである。
請求項6の発明は、請求項1、2又は4の現像装置において、上記トナー搬送基板の接合領域は、該トナー搬送基板の両端部が重ね合わされた状態で接着されていることを特徴とするものである。
請求項7の発明は、請求項1、2、3、4、5又は6の現像装置において、上記トナー搬送基板の接合領域には、位置合わせのための位置合わせ情報が形成されることを特徴とするものである。
請求項8の発明は、請求項7の現像装置において、上記位置合わせ用情報は、上記トナー搬送手段の軸方向及び周方向に延びる直線であることを特徴とするものである。
請求項9の発明は、請求項5の現像装置において、上記トナー搬送基板の両端部が突き当てられる突き当て部には、凹凸形状が形成されることを特徴とするものである。
請求項10の発明は、潜像を担持する潜像担持体と、該潜像担持体上の潜像を現像する現像装置とを備える画像形成装置において、上記現像装置として、請求項1、2、3、4、5、6、7、8又は9の現像装置を用いることを特徴とするものである。
この発明においては、トナー搬送基板の接合領域が画像形成に関与しない位置に配置されているので、接合領域の寸法精度や表面状態等が画像形成に直接影響しない。よって、接合領域の状態によらず、高品質な画像を得ることが可能となる。また、この発明においては、トナー搬送基板の接合領域に搬送電極を形成しないので、接合領域を熱圧着により接合しても加熱、加圧の影響が搬送電極に及ばず、トナー搬送の信頼性が確保される。また、これらの発明においては、トナー搬送部材を円筒状に構成しているため、ベルトを複数の軸に巻き回す構成に比べ、コンパクト化を図ることができる。
In order to achieve the above object, the invention of claim 1 is directed to a latent image carrier that carries a latent image, and development that faces the latent image carrier by moving the toner on the surface relative to the surface by electrostatic force. A developing device comprising: a toner conveying unit having a conveying electrode for conveying toward a region; a toner supplying unit that supplies toner to the toner conveying unit; and a toner collecting unit that collects toner on the toner conveying unit The toner conveying means is formed in a cylindrical shape by joining bonding regions provided at both ends of a toner conveying substrate made of an insulating material, and the bonding region of the toner conveying substrate is more than the toner conveying means than the toner supplying means. The toner is located on the upstream side in the toner conveyance direction and further on the downstream side in the toner conveyance direction of the toner conveyance means than the toner collection means.
According to a second aspect of the present invention, in the developing device of the first aspect, the transport electrode is not formed in a joining region of the toner transport substrate.
According to a third aspect of the present invention, there is provided a latent image carrier for carrying a latent image and a transport electrode for clouding the toner on the surface by electrostatic force, toward a developing region facing the latent image carrier. In the developing device including the toner conveying unit that conveys the toner by rotation, the toner conveying unit is configured in a cylindrical shape by bonding bonding regions provided at both ends of the toner conveying substrate made of an insulating material. The carrier electrode is not formed in the bonding region of the substrate.
According to a fourth aspect of the present invention, in the developing device according to the first, second, or third aspect, the joining region of the toner transport substrate is bonded with a thermoplastic adhesive or a thermosetting adhesive. is there.
According to a fifth aspect of the present invention, in the developing device according to the first, second, third, or fourth aspect, the joining region of the toner transport substrate is bonded with both end portions of the toner transport substrate being abutted against each other. It is a feature.
According to a sixth aspect of the present invention, in the developing device according to the first, second, or fourth aspect, the joining region of the toner transport substrate is bonded in a state where both end portions of the toner transport substrate are overlapped. Is.
According to a seventh aspect of the present invention, in the developing device of the first, second, third, fourth, fifth or sixth aspect, alignment information for alignment is formed in the bonding region of the toner transport substrate. It is what.
According to an eighth aspect of the present invention, in the developing device according to the seventh aspect, the positioning information is a straight line extending in the axial direction and the circumferential direction of the toner conveying means.
According to a ninth aspect of the present invention, in the developing device according to the fifth aspect of the present invention, a concavo-convex shape is formed at the abutting portion against which both end portions of the toner transport substrate are abutted.
According to a tenth aspect of the present invention, there is provided an image forming apparatus comprising a latent image carrier that carries a latent image and a developing device that develops the latent image on the latent image carrier. 3, 4, 5, 6, 7, 8 or 9 developing devices are used.
In the present invention, since the joining area of the toner transport substrate is arranged at a position not involved in image formation, the dimensional accuracy and surface state of the joining area do not directly affect image formation. Therefore, it is possible to obtain a high-quality image regardless of the state of the joining region. Further, in the present invention, since no transport electrode is formed in the joining region of the toner transport substrate, even if the joining region is joined by thermocompression bonding, the influence of heating and pressurization does not affect the transport electrode, and the toner transport reliability is improved. Secured. In these inventions, since the toner conveying member is formed in a cylindrical shape, it is possible to reduce the size as compared with a configuration in which the belt is wound around a plurality of shafts.

本発明によれば、接合ベルトからなるトナー搬送手段を用いた現像装置において、接合領域が画像形成に直接関与せず、高品質な画像を得ることができる現像装置及び画像形成装置を提供できるという優れた効果がある。また、本発明によれば、接合時の影響が搬送電極に及ばず、高品質な画像を得ることができる現像装置及び画像形成装置を提供することができるという優れた効果がある。   According to the present invention, it is possible to provide a developing device and an image forming apparatus that can obtain a high-quality image in a developing device using toner conveying means including a joining belt, in which the joining region is not directly involved in image formation. Has an excellent effect. In addition, according to the present invention, there is an excellent effect that it is possible to provide a developing device and an image forming apparatus that can obtain a high-quality image without affecting the transport electrodes at the time of joining.

以下、本発明を電子写真方式の画像形成装置に用いられる現像装置に適用した場合の実施形態について説明する。図1は、磁性キャリアと非磁性トナーから成る二成分現像剤を用いた現像装置の構成を示す構成図である。図2は、トナー搬送部材の周りの構成を説明する模式図である。なお、図2では、トナー搬送部材を誇大に図示している。図1に示すように、この現像装置は、図中矢印A方向に回転する潜像担持体1の側方に配置され、この潜像担持体1に向けて開口部が形成された現像剤収容器2を有している。この現像剤収容器2の開口部から、トナーを潜像担持体1に対向する現像領域に搬送するトナー搬送手段である円筒状のトナー搬送部材3が一部露出するようにして配置されている。また、トナー搬送部材3の側方には、現像剤を表面に担持しながら矢印B方向に回転するトナー供給手段としての現像剤担持体4が配置されている。この現像剤担持体4は、内部に固定された磁界発生手段としてのマグネットローラを備えている。また、現像剤担持体4の周囲には、現像剤担持体4に担持されてトナー搬送部材3との対向部に搬送される現像剤量を規制する現像剤規制部材5が設けられている。また、現像剤収容器2には、現像剤収容器2内の現像剤を攪拌しながら搬送するための撹拌搬送部材である搬送スクリュ6、7が設けられている。なお、図1では、撹拌スクリュ6、7の間には仕切りがあるが、現像剤収容器2の長手方向手前側、奥側には仕切りがなく、現像剤収容器2内はつながっており現像剤が移動できるようになっている。さらに、現像剤収容器2内の撹拌スクリュ7の上方には、補充用トナーを収容する図示しないトナー収容部が設けられ、トナー補給口8を介して現像剤収容器2にトナーが補給される。また、現像剤収容器2の底部には、現像剤のトナー濃度を検出する図示しないトナー濃度センサが設置されている。   Hereinafter, an embodiment in which the present invention is applied to a developing device used in an electrophotographic image forming apparatus will be described. FIG. 1 is a configuration diagram showing a configuration of a developing device using a two-component developer composed of a magnetic carrier and a nonmagnetic toner. FIG. 2 is a schematic diagram illustrating a configuration around the toner conveying member. In FIG. 2, the toner conveying member is exaggeratedly illustrated. As shown in FIG. 1, this developing device is disposed on the side of a latent image carrier 1 that rotates in the direction of arrow A in the figure, and contains developer that has an opening formed toward the latent image carrier 1. A container 2 is provided. A cylindrical toner conveying member 3 that is a toner conveying means for conveying toner to a developing region facing the latent image carrier 1 is disposed so as to be partially exposed from the opening of the developer container 2. . Further, on the side of the toner conveying member 3, a developer carrier 4 is disposed as a toner supply unit that rotates in the direction of arrow B while carrying the developer on the surface. The developer carrier 4 includes a magnet roller as a magnetic field generating means fixed inside. Further, around the developer carrying member 4, a developer regulating member 5 that regulates the amount of developer carried on the developer carrying member 4 and conveyed to a portion facing the toner conveying member 3 is provided. Further, the developer container 2 is provided with transport screws 6 and 7 which are stirring and transporting members for transporting the developer in the developer container 2 while stirring. In FIG. 1, there is a partition between the stirring screws 6 and 7, but there is no partition on the front side and the back side in the longitudinal direction of the developer container 2, and the developer container 2 is connected and developed. The agent can move. Further, a toner storage unit (not shown) for storing replenishing toner is provided above the stirring screw 7 in the developer storage unit 2, and the toner is supplied to the developer storage unit 2 through the toner supply port 8. . A toner concentration sensor (not shown) for detecting the toner concentration of the developer is installed at the bottom of the developer container 2.

上記構成の現像装置では、現像剤撹拌スクリュ6、7が回転することにより、現像剤収容器2に収容されている現像剤が撹拌されながら現像剤担持体4の近傍へ搬送される。現像剤担持体4近傍に搬送された現像剤は現像剤担持体4内部のマグネットローラによる磁力によって現像剤担持体4表面に汲み上げられる。現像剤担持体4によって汲み上げられた現像剤は、現像剤規制部材5により一定量の層厚に規制される。現像剤規制部材5により規制された現像剤は、現像剤担持体4の矢印B方向の回転によってトナー搬送部材3に対向する位置まで搬送される。現像剤担持体4には、第一電圧印加手段9によって供給バイアスが印加されている。トナー搬送部材3には、第二電圧印加手段10によって搬送電極に電圧が印加されている。第一電圧印加手段9及び第二電圧印加手段10によってトナー搬送部材3と現像剤担持体4との間に電界が生じ、その電界からの静電気力を受け、現像剤担持体4上のトナーはキャリアから解離し、トナー搬送部材3表面に移動する。トナー搬送部材3表面に達したトナーは、第二電圧印加手段による進行波電界によって、トナー搬送部材3表面上をホッピングしながら矢印C方向に潜像担持体1に対向する現像領域まで搬送される。現像領域に搬送されたトナーは、トナー搬送部材3と潜像担持体1上の画像部との間の現像電界によって、潜像担持体1上に現像される。図2に示すように、現像に寄与しなかったトナーはトナー搬送部材3によってさらに搬送され、トナー回収手段、例えば後述する金属ローラ11によってトナー搬送部材3表面から回収される。回収されたトナーは再び現像装置内を循環する。そして、トナー濃度センサによりトナー濃度が所定のトナー濃度より低下したことが検知されれば、トナー補給口8を介して補充用のトナーが補給され、現像剤収容器2内の現像剤が適正なトナー濃度に制御される。   In the developing device configured as described above, the developer agitation screws 6 and 7 rotate, whereby the developer accommodated in the developer container 2 is conveyed to the vicinity of the developer carrier 4 while being agitated. The developer conveyed to the vicinity of the developer carrier 4 is pumped up to the surface of the developer carrier 4 by the magnetic force generated by the magnet roller inside the developer carrier 4. The developer pumped up by the developer carrier 4 is regulated to a certain layer thickness by the developer regulating member 5. The developer regulated by the developer regulating member 5 is conveyed to a position facing the toner conveying member 3 by the rotation of the developer carrier 4 in the arrow B direction. A supply bias is applied to the developer carrier 4 by the first voltage application means 9. A voltage is applied to the toner conveying member 3 by the second voltage applying means 10 to the conveying electrode. An electric field is generated between the toner conveying member 3 and the developer carrier 4 by the first voltage application means 9 and the second voltage application means 10, and the toner on the developer carrier 4 is subjected to electrostatic force from the electric field. It dissociates from the carrier and moves to the surface of the toner conveying member 3. The toner that has reached the surface of the toner transport member 3 is transported to the developing region facing the latent image carrier 1 in the direction of arrow C while hopping on the surface of the toner transport member 3 by the traveling wave electric field generated by the second voltage applying means. . The toner conveyed to the development area is developed on the latent image carrier 1 by a developing electric field between the toner conveying member 3 and the image portion on the latent image carrier 1. As shown in FIG. 2, the toner that has not contributed to the development is further conveyed by the toner conveying member 3 and is collected from the surface of the toner conveying member 3 by a toner collecting means, for example, a metal roller 11 described later. The collected toner circulates in the developing device again. When the toner density sensor detects that the toner density has decreased below the predetermined toner density, the replenishment toner is replenished via the toner replenishment port 8, and the developer in the developer container 2 is properly supplied. Controlled by toner density.

上記トナー回収手段の代表例を示す。図3は、トナー回収手段を含む現像装置の構成を示す構成図である。なお、図3中、図1に示す部材と同一部材には同一符号を付し説明を省略する。図3に示すように、トナー回収手段である金属ローラ11は、トナー搬送部材3の現像領域よりもトナー搬送方向下流側であって、現像剤担持体4よりもトナー搬送方向上流側に設置される。現像に寄与しなかったトナー粒子は、トナー搬送部材3の現像領域を通過してトナー粒子とは逆極性のバイアス電圧が印加される金属ローラ11に静電的に吸着されトナー搬送部材3と分離される。金属ローラ11に印加するバイアス電圧はトナー搬送部材3に印加したバイアス電圧に対して逆極性に印加する。本実施例では、金属ローラ11は0Vから+100Vの範囲でバイアス電圧を印加している。金属ローラ11はトナー搬送部材3に対してわずかに離間させて回転するように設置されている。金属ローラ11とトナー搬送部材3の間隙は、50〜1000μm、好ましくは150〜400μmで、トナー粒子が進行波電界によって移動する際にホッピングする高さより小さい方が望ましい。本実施例の場合おおよそ400μm程度離して設置している。金属ローラ11に吸着したトナー粒子は、金属ローラ11を回転させることにより金属ローラ11表面に接触させたブレード12によって掻き取られ重力により現像剤収容器2内に回収される。金属ローラ11の回転方向は特に規制はしないがトナー搬送部材3のトナー搬送方向と同じ方向が望ましい。金属ローラ11から落下して回収されたトナー粒子は、再び現像剤担持体4の現像剤に捕獲されトナー搬送部材3との対向部へ運ばれる。   A representative example of the toner collecting means will be shown. FIG. 3 is a configuration diagram illustrating a configuration of a developing device including a toner collecting unit. In FIG. 3, the same members as those shown in FIG. As shown in FIG. 3, the metal roller 11 serving as a toner collecting unit is disposed downstream of the developing area of the toner conveying member 3 in the toner conveying direction and upstream of the developer carrier 4 in the toner conveying direction. The Toner particles that have not contributed to development pass through the development region of the toner conveying member 3 and are electrostatically attracted to the metal roller 11 to which a bias voltage having a polarity opposite to that of the toner particles is applied, and are separated from the toner conveying member 3. Is done. The bias voltage applied to the metal roller 11 is applied with a reverse polarity to the bias voltage applied to the toner conveying member 3. In this embodiment, the metal roller 11 applies a bias voltage in the range of 0V to + 100V. The metal roller 11 is installed so as to rotate slightly spaced from the toner conveying member 3. The gap between the metal roller 11 and the toner conveying member 3 is 50 to 1000 μm, preferably 150 to 400 μm, and is desirably smaller than the height at which the toner particles hop when moved by the traveling wave electric field. In the case of this embodiment, they are installed approximately 400 μm apart. The toner particles adsorbed on the metal roller 11 are scraped off by the blade 12 brought into contact with the surface of the metal roller 11 by rotating the metal roller 11 and are collected in the developer container 2 by gravity. Although the rotation direction of the metal roller 11 is not particularly restricted, the same direction as the toner conveyance direction of the toner conveyance member 3 is desirable. The toner particles dropped and collected from the metal roller 11 are again captured by the developer on the developer carrying member 4 and carried to the portion facing the toner conveying member 3.

ところで、本実施形態に係るトナー搬送部材3は、絶縁材料であるフレキシブル樹脂からなるトナー搬送基板の両端部を熱圧着により接合して円筒状に成形したのものである。図2に示すように、トナー搬送部材3は、トナー搬送基板13の両端部が突き当てられた状態で接合剤14による熱圧着が行われて、円筒状に接合されている。このとき、トナー搬送部材3は、トナー搬送基板13の接合部分(接合剤14)がトナー供給手段である現像剤担持体4よりもトナー搬送部材3のトナー搬送方向上流側であって、トナー回収手段よりもトナー搬送方向下流側となるように配置されている。このように、トナー搬送基板13の接合部分が画像形成に直接関係ない場所に配置されているので、接合部分の状態、例えば接合部の寸法精度や表面の凹凸が画像形成に直接影響しない。   By the way, the toner conveying member 3 according to the present embodiment is formed in a cylindrical shape by joining both ends of a toner conveying substrate made of a flexible resin as an insulating material by thermocompression bonding. As shown in FIG. 2, the toner conveying member 3 is bonded in a cylindrical shape by thermocompression bonding with the bonding agent 14 in a state where both ends of the toner conveying substrate 13 are abutted. At this time, the toner conveying member 3 is such that the bonding portion (bonding agent 14) of the toner conveying substrate 13 is upstream of the developer conveying member 4 as the toner supply means in the toner conveying direction of the toner conveying member 3, and the toner collecting It is arranged to be downstream of the means in the toner conveyance direction. As described above, since the joint portion of the toner transport substrate 13 is disposed at a place not directly related to image formation, the state of the joint portion, for example, the dimensional accuracy of the joint portion and the surface unevenness do not directly affect the image formation.

図4は、トナー搬送基板の構成を説明する平面図である。図4に示すように、このトナー搬送基板13は、3相の電極15、16、17が基板長手方向(図中左右方向)に所定の間隔で連続形成されている。この3相の電極15、16、17には、図示しない互いに異なる電極端子が接続される。上述したように現像時には第二電圧印加手段10によって各電極端子に対し所定位相及び所定周期の駆動電圧が印加され、トナー搬送基板13上のトナーを所定のトナー搬送方向に移動させる電界が形成される。また、このトナー搬送基板13の両端部には、円筒接合するための接合領域Xが図2、4中一点斜線で示すように設けられ、接合領域X内には搬送電極15、16、17を形成しないようにしている。なお、トナー搬送基板13には、形成プロセス(加熱、試薬等)において耐性なポリイミドフイルム(125ミクロン厚)を用いたが、他の材料でも耐性を備えていれば用いることができる。搬送電極の形成方法としては、薄層で微細形成が可能な半導体プロセス(フォトリソ)を用いた。   FIG. 4 is a plan view illustrating the configuration of the toner transport substrate. As shown in FIG. 4, the toner transport substrate 13 has three-phase electrodes 15, 16, and 17 formed continuously at a predetermined interval in the substrate longitudinal direction (left and right direction in the figure). Different electrode terminals (not shown) are connected to the three-phase electrodes 15, 16, and 17. As described above, at the time of development, the second voltage applying unit 10 applies a driving voltage having a predetermined phase and a predetermined period to each electrode terminal, and an electric field for moving the toner on the toner transport substrate 13 in a predetermined toner transport direction is formed. The In addition, a joining region X for cylindrical joining is provided at both ends of the toner transport substrate 13 as shown by one-dot oblique lines in FIGS. 2 and 4, and transport electrodes 15, 16, and 17 are provided in the joining region X. I try not to form it. The toner transport substrate 13 is made of a polyimide film (thickness: 125 microns) that is resistant in the formation process (heating, reagent, etc.), but other materials can be used as long as they are resistant. As a method of forming the transport electrode, a semiconductor process (photolitho) that can be formed finely with a thin layer was used.

また、図4に示すように、このトナー搬送基板13の接合領域Xには、接合時の位置合わせ情報となるアライメントマークa、bが形成されている。このアライメントマークaは、トナー搬送部材3の軸方向に延びる直線であって、アライメントマークbは、トナー搬送部材3の周方向となる矢印C方向に延びる直線である。手合わせによる接合において、アライメントマークa、bは、目視で合わせ可能な大きさが好ましい。光学系等の設備を用いてもよいが、設備コストの点で不利である。このトナー搬送基板13は、上記搬送電極15、16、17のパタニング形成と同工程でアライメントマークa、bを形成し、設計仕様寸法に沿った大きさにカットすればよい。両端部に形成したアライメントマークaの位置より矢印C方向に突き当て位置が決まるので、カット位置を両端部共にアライメントマークa同士を結ぶ直線と平行になるようにする。このとき、接合領域Xに搬送電極15、16、17がないので、搬送電極のパタニング形成後の切断が容易となり、製造工程の歩留まりが向上するという効果もある。   As shown in FIG. 4, alignment marks a and b serving as alignment information at the time of bonding are formed in the bonding region X of the toner transport substrate 13. The alignment mark a is a straight line extending in the axial direction of the toner conveying member 3, and the alignment mark b is a straight line extending in the arrow C direction that is the circumferential direction of the toner conveying member 3. In joining by manual alignment, the alignment marks a and b are preferably large enough to be visually aligned. Equipment such as an optical system may be used, but it is disadvantageous in terms of equipment cost. The toner transport substrate 13 may be formed by forming the alignment marks a and b in the same process as the patterning of the transport electrodes 15, 16, and 17 and cutting it to a size according to the design specification dimensions. Since the abutting position is determined in the direction of the arrow C from the position of the alignment mark a formed at both ends, the cut position is set to be parallel to the straight line connecting the alignment marks a at both ends. At this time, since there are no transport electrodes 15, 16, and 17 in the bonding region X, it is easy to cut the transport electrodes after patterning, and the yield of the manufacturing process is improved.

次に、上記トナー搬送基板の接合方法について実施例1〜実施例4をもとに具体的に説明する。図5は、接合装置の構成を示す正面図である。図5に示すように、この接合装置は、加熱部20を備えたステージ21と加圧ヘッド22とを備えている。ステージ21の中央部には、接合剤14をセットするための僅かな段差部23が形成されている。接合装置の背板24には、接合位置合わせマークcが設けられている。   Next, the method for bonding the toner transport substrate will be described in detail based on Examples 1 to 4. FIG. 5 is a front view showing the configuration of the bonding apparatus. As shown in FIG. 5, the bonding apparatus includes a stage 21 including a heating unit 20 and a pressure head 22. A slight step portion 23 for setting the bonding agent 14 is formed at the center of the stage 21. A joining position alignment mark c is provided on the back plate 24 of the joining apparatus.

〔実施例1〕
図6は、接合装置上でトナー搬送基板の接合を行う様子を説明する平面図である。本実施例では、接合剤である接合剤テープとして、ポリイミド(厚み125ミクロン)にポリエステル系接着層(熱可塑性)を仮接合した工業用接着テープ(商品名:D3600(ソニーケミカル社製))の8mm幅を用いた。先ず、図5に示す接合装置のステージ21の段差部23に接合剤テープをセットする。接合剤テープはその幅が段差部23の幅と略同等の状態でセットされているためずれることは無い。次に、トナー搬送基板13の両端部となる接合領域Xをステージ21上に載置し、接合領域Xのアライメントマークaと接合装置の背板24に設けられた接合位置合わせマークcをそれぞれ合わせる。このとき、トナー搬送基板13の搬送電極15、16、17が形成された面(以下、搬送電極面という)を図中上側にし、トナー搬送基板の搬送電極面とは反対側の裏面に接合剤テープが当接するようにする。さらに、接合領域Xのアライメントマークb同士を互いに合わせ、トナー搬送基板13の両端部同士を突き当て状態にする。この状態でトナー搬送基板13がずれない様にチャッキングする。次に、トナー搬送基板13の接合領域Xを接合装置の加圧ヘッド22で加圧し、ステージ21に設けられた加熱部20を加熱して熱圧着する。加熱圧着条件は、120℃/10秒 4kg/cmで実施した。加圧ヘッド22のヘッド部は、接合剤付着防止の観点からテフロン(登録商標)加工処理されたものが望ましい。ここで注意すべきことは、熱圧着して加熱温度の高い状態で加圧を解除すると、接合剤が充分固まらずトナー搬送基板13の反発で良好な接合ができない。よって、接合剤の軟化点より低い温度で加圧を解除することが望ましい。本実施例では、より早く冷却する観点から、熱圧着終了後、加圧状態にてステージ21の加熱部20を圧空で放冷し、軟化点以下に下げた後加圧を解除した。冷却は、他の冷媒を用いることができる。この様に、トナー搬送基板13の両端部を突き当てる状態で、接合領域全面に接合剤(ポリエステル系接着層/ポリイミド)を配置した構成にしたことにより、接合領域Xの段差がなく、搬送電極面に反り等が生じない略平坦な30φの円筒状トナー搬送部材が完成した。
[Example 1]
FIG. 6 is a plan view illustrating a state in which the toner transport substrate is bonded on the bonding apparatus. In this example, as an adhesive tape which is an adhesive, an industrial adhesive tape (trade name: D3600 (manufactured by Sony Chemical Corporation)) in which a polyester-based adhesive layer (thermoplastic) is temporarily bonded to polyimide (thickness 125 microns). An 8 mm width was used. First, a bonding agent tape is set on the step portion 23 of the stage 21 of the bonding apparatus shown in FIG. Since the bonding tape is set in a state where the width thereof is substantially equal to the width of the stepped portion 23, the bonding tape does not shift. Next, the joining area X which becomes both ends of the toner transport substrate 13 is placed on the stage 21, and the alignment mark a of the joining area X and the joining position alignment mark c provided on the back plate 24 of the joining apparatus are respectively aligned. . At this time, the surface on which the transport electrodes 15, 16, and 17 of the toner transport substrate 13 are formed (hereinafter referred to as transport electrode surface) is the upper side in the drawing, and the bonding agent is disposed on the back surface opposite to the transport electrode surface of the toner transport substrate. Make sure the tape touches. Further, the alignment marks b in the joining region X are aligned with each other, and both end portions of the toner transport substrate 13 are brought into contact with each other. In this state, chucking is performed so that the toner transport substrate 13 does not shift. Next, the joining region X of the toner transport substrate 13 is pressurized by the pressure head 22 of the joining device, and the heating unit 20 provided on the stage 21 is heated and thermocompression bonded. The thermocompression bonding conditions were 120 ° C./10 seconds 4 kg / cm 2 . The head portion of the pressure head 22 is desirably processed by Teflon (registered trademark) from the viewpoint of preventing adhesion of the bonding agent. What should be noted here is that when the pressure is released in a state where thermocompression bonding is performed and the heating temperature is high, the bonding agent is not sufficiently hardened and good bonding cannot be performed due to repulsion of the toner transport substrate 13. Therefore, it is desirable to release the pressure at a temperature lower than the softening point of the bonding agent. In this example, from the viewpoint of faster cooling, after completion of thermocompression bonding, the heating unit 20 of the stage 21 was allowed to cool with pressurized air in a pressurized state, and the pressure was released after being lowered below the softening point. Other refrigerants can be used for cooling. As described above, since the bonding agent (polyester adhesive layer / polyimide) is disposed on the entire bonding region in a state where both ends of the toner conveyance substrate 13 are in contact with each other, there is no level difference in the bonding region X, and the conveyance electrode. A substantially flat 30φ cylindrical toner conveying member having no warp on the surface was completed.

〔実施例2〕
本実施例では、実施例1で用いたトナー搬送基板13を用い、接合剤として、ポリイミド(幅10mm、長さ80mm、厚み125ミクロン)の上にエポキシ系接着剤(熱硬化)を8mm幅に塗布したものを用いた。接合方法としては、先ず接合装置の段差部23にポリイミド上のエポキシ系接着剤の表面を半生乾きさせた(タック性がない)状態の接合剤をセットする。そして、実施例1と同様にトナー搬送基板13の両端部となる接合領域Xをステージ21上に載置し、位置合わせを行って両端部を突き当て状態にし、加圧状態で加熱130℃/20分を施した。これにより、実施例一同様に、接合領域Xの段差がなく搬送電極面に反り等が生じない略平坦な30φの円筒状トナー搬送部材が完成した。
[Example 2]
In this embodiment, the toner carrying substrate 13 used in the first embodiment is used, and an epoxy adhesive (thermosetting) is made 8 mm wide on polyimide (width 10 mm, length 80 mm, thickness 125 microns) as a bonding agent. The coated one was used. As a bonding method, first, a bonding agent in a state where the surface of the epoxy adhesive on polyimide is semi-dry (no tackiness) is set on the step portion 23 of the bonding apparatus. Then, similarly to the first embodiment, the joining regions X that are both ends of the toner transport substrate 13 are placed on the stage 21, the both ends are brought into contact with each other, and heating is performed at 130 ° C./pressure in a pressurized state. 20 minutes was given. As a result, as in Example 1, a substantially flat 30φ cylindrical toner conveying member in which there is no step in the bonding region X and no warp or the like occurs on the conveying electrode surface was completed.

〔実施例3〕
図7は、実施例1とは別の形態で接合位置合わせを行うトナー搬送基板の構成を説明する平面図であって、(a)は接合前のトナー搬送基板の構成を示す平面図、(b)は接合後のトナー搬送基板の構成を示す平面図である。図7(a)に示すように、トナー搬送基板30は、図中一点斜線で示す接合領域X’にトナー搬送部材の軸方向に延びるアライメントマークa’と、2mmサイズの凹凸形状の切り込み31を形成した。本実施例では、このトナー搬送基板30を用い、実施例1と同様に、接合剤である接合剤テープとして、ポリイミド(厚み125ミクロン)にポリエステル系接着層(熱可塑性)を仮接合した工業用接着テープ(商品名:D3600(ソニーケミカル社製))の8mm幅を用いた。先ず、接合装置のステージ21の段差部23に接合剤テープをセットする。接合剤テープはその幅が段差部の幅と略同等の状態でセットされているためずれることは無い。次に、トナー搬送基板30の接合領域X’をステージ21上に載置し、接合領域X’のアライメントマークa’と接合装置の背板24に設けられた接合位置合わせマークcをそれぞれ合わせる。このとき、トナー搬送基板30の搬送電極が形成された面(以下、搬送電極面という)を図中上側にし、トナー搬送基板の搬送電極面とは反対側の裏面に接合剤テープが当接するようにする。さらに図7(b)に示すように、トナー搬送基板30の両端部の切り込み31を合わせる(一端が凸の場合、対照側は凹が形成されている)ことでトナー搬送基板30の両端部同士を突き当て状態にする。この状態でトナー搬送基板30がずれない様にチャッキングする。トナー搬送基板30の両端部の切り込み31(凹凸形状)は、いわばアライメントの機能を持つ。トナー搬送基板30の長さは、事前に完成時設計軸径になるようカットが必要である。これ以降は、実施例1と同様に加圧、加熱、さらに放熱したあとに加圧を解除し、トナー搬送基板30の両端部を突き当てる状態で、接合領域全面に接合剤(ポリエステル系接着層/ポリイミド)を配置した構成にしたことにより、接合領域Xの段差がなく、搬送電極面に反り等が生じない略平坦な30φの円筒状トナー搬送部材が完成した。
Example 3
FIG. 7 is a plan view illustrating a configuration of a toner transport substrate that performs bonding position alignment in a form different from that in Embodiment 1, and FIG. 7A is a plan view illustrating a configuration of the toner transport substrate before bonding. FIG. 4B is a plan view showing the configuration of the toner transport substrate after bonding. As shown in FIG. 7A, the toner transport substrate 30 is provided with an alignment mark a ′ extending in the axial direction of the toner transport member and a notch 31 having a concavo-convex shape of 2 mm size in a joining region X ′ indicated by a one-dot oblique line in the drawing. Formed. In this embodiment, the toner transport substrate 30 is used, and as in the first embodiment, a polyester adhesive layer (thermoplastic) is temporarily bonded to polyimide (thickness 125 microns) as a bonding agent tape as a bonding agent. An 8 mm width of an adhesive tape (trade name: D3600 (manufactured by Sony Chemical Corporation)) was used. First, a bonding agent tape is set on the step portion 23 of the stage 21 of the bonding apparatus. Since the adhesive tape is set in a state where the width thereof is substantially equal to the width of the stepped portion, it does not shift. Next, the bonding area X ′ of the toner transport substrate 30 is placed on the stage 21 and the alignment mark a ′ of the bonding area X ′ and the bonding position alignment mark c provided on the back plate 24 of the bonding apparatus are aligned. At this time, the surface of the toner transport substrate 30 on which the transport electrodes are formed (hereinafter referred to as the transport electrode surface) is the upper side in the drawing, and the adhesive tape is in contact with the back surface of the toner transport substrate opposite to the transport electrode surface. To. Further, as shown in FIG. 7B, the notches 31 at both ends of the toner transport substrate 30 are aligned (when one end is convex, the opposite side is formed with a recess), the both ends of the toner transport substrate 30 are aligned with each other. To the butted state. In this state, chucking is performed so that the toner transport substrate 30 does not shift. The notches 31 (uneven shape) at both ends of the toner transport substrate 30 have an alignment function. The length of the toner transport substrate 30 needs to be cut in advance so as to be the designed shaft diameter when completed. Thereafter, as in the first embodiment, after applying pressure, heating, and heat radiation, the pressure is released and the both ends of the toner transport substrate 30 are abutted against each other. / Polyimide), a substantially flat 30φ cylindrical toner conveying member having no step in the bonding region X and no warpage on the conveying electrode surface was completed.

〔実施例4〕
図8は、実施例1とは別の形態で接合位置合わせを行う様子を説明する平面図である。本実施例では、図8に示すように、トナー搬送基板32の両端部を重ね合わせた状態で図中一点斜線で示す接合領域X’’を接合した。本実施例においても実施例1で用いたトナー搬送基板30とほぼ同一の構成の基板を用いるが、一部接合用アライメントマークa’’、b’’を図8で示す接合領域X’’より外側(搬送電極側)に形成する。接合においては、まず、完成時に軸径が設計値になるようあらかじめトナー搬送基板32のサイズをカットしておく。次に、トナー搬送基板32の一方の端部に形成されたアライメントマークa’’と接合装置の背板に形成された位置合わせマークとを合わせ、ステージに位置決め固定する。次に、ポリイミド(厚み125ミクロン)の両面にポリエステル系接着層(熱可塑性)が仮接合された工業用接着テープ(商品名:D3600(ソニーケミカル社製))をトナー搬送基板32の一方の接合領域X’’にセットする。その際、低温(50℃)にて仮接合する。次に、トナー搬送基板32の他方の接合領域X’’に形成されたアライメントマークb’’を先の一方の端部に形成されたアライメントマークb’’と整合させ、加圧状態で上下から加熱し、放冷後、加圧を解除した。加熱圧着条件は、120℃/10秒 4kg/cmで実施した。本実施例では、接合領域全面に接合剤(ポリエステル系接着層/ポリイミド)を配置した構成にしたことにより、搬送電極面に反り等が生じない略平坦な30φの円筒状トナー搬送部材が完成した。なお、本実施例では、トナー搬送基板32の両端部を重ね合わせているため、実施例1乃至3のトナー搬送部材13、30に比べ接合領域X’’部分に段差が生じやすいが、接合領域X’’が画像形成に影響ない位置に配置されているため、接合領域X’’の状態によらず、高品質な画像を得ることができる。
Example 4
FIG. 8 is a plan view for explaining a state in which the bonding position is adjusted in a form different from that of the first embodiment. In this embodiment, as shown in FIG. 8, the joining region X ″ indicated by the one-dot oblique line in the figure is joined in a state where both ends of the toner transport substrate 32 are overlapped. Also in this embodiment, a substrate having substantially the same configuration as that of the toner transport substrate 30 used in Embodiment 1 is used. However, the partial alignment marks a ″ and b ″ are obtained from the bonding region X ″ shown in FIG. It is formed on the outside (conveying electrode side). In joining, first, the size of the toner transport substrate 32 is cut in advance so that the shaft diameter becomes the design value when completed. Next, the alignment mark a ″ formed on one end of the toner transport substrate 32 and the alignment mark formed on the back plate of the bonding apparatus are aligned and fixed to the stage. Next, an industrial adhesive tape (trade name: D3600 (manufactured by Sony Chemical Co., Ltd.)) in which a polyester adhesive layer (thermoplastic) is temporarily bonded to both sides of polyimide (125 microns thick) is bonded to one side of the toner transport substrate 32. Set to region X ″. At that time, temporary bonding is performed at a low temperature (50 ° C.). Next, the alignment mark b ″ formed on the other joining region X ″ of the toner transport substrate 32 is aligned with the alignment mark b ″ formed on the one end of the toner conveying substrate 32, and is pressed from above and below in a pressurized state. After heating and allowing to cool, the pressure was released. The thermocompression bonding conditions were 120 ° C./10 seconds 4 kg / cm 2 . In this example, a substantially flat 30φ cylindrical toner conveying member in which warpage or the like does not occur on the conveying electrode surface was completed by arranging the bonding agent (polyester adhesive layer / polyimide) over the entire bonding region. . In this embodiment, since both end portions of the toner transport substrate 32 are overlapped, a step is likely to occur in the joint region X ″ as compared with the toner transport members 13 and 30 of the first to third embodiments. Since X ″ is arranged at a position that does not affect image formation, a high-quality image can be obtained regardless of the state of the bonding region X ″.

以上、実施例1乃至4で得られるトナー搬送基板13、30、32は、熱圧着により接合されているため、貼り付けやカバー固定等に比べ、接合領域の機械強度に優れる。また、実施例1乃至4で得られるトナー搬送基板32は、接合領域に搬送電極がないため、接合時の熱圧着による加圧、加熱等の影響が搬送電極に及ばす、搬送電極に断線等のダメージが生じない。よって、図1に示す現像装置のトナー搬送部材として実施例1乃至4で得られるトナー搬送基板13、30、32を用いた場合には、搬送電極のダメージによるスジ等の画質低下等の虞がなく、高品質な画像を得ることが可能となる。接合領域に搬送電極が形成され、搬送電極が熱圧着によるダメージを受けた場合には、図2に示すように接合領域が画像形成に直接影響がない場所にあっても、トナー搬送の信頼性が薄れ、画像形成に影響を及ぼす虞があるからである。   As described above, since the toner transport substrates 13, 30, and 32 obtained in Examples 1 to 4 are bonded by thermocompression bonding, the mechanical strength of the bonded region is excellent as compared to pasting and cover fixing. In addition, since the toner transport substrate 32 obtained in Examples 1 to 4 does not have a transport electrode in the joining region, the transport electrode is affected by pressurization, heating, or the like due to thermocompression bonding at the time of joining. No damage will occur. Therefore, when the toner transport substrates 13, 30, and 32 obtained in Examples 1 to 4 are used as the toner transport member of the developing device shown in FIG. 1, there is a risk of image quality degradation such as streaks due to damage to the transport electrodes. Therefore, a high quality image can be obtained. When the transport electrode is formed in the joining area and the transport electrode is damaged by thermocompression bonding, the reliability of toner transport is ensured even if the joining area is not directly affected by image formation as shown in FIG. This is because there is a possibility that the image will be thinned and affect image formation.

また、本実施例で得られるトナー搬送基板13、30は、図1に示す現像装置とは別の現像装置に搭載することもできる。次に、別の現像装置の構成について説明する。図9は、別の現像装置の構成を説明する構成図である。なお、図9中、図3で説明した部材と同一部材には、同一符号を付し説明を省略する。この現像装置は、図9に示すように、矢印A方向に回転する潜像担持体1の側方に配置され、現像剤収容器2内に矢印B方向に回転する現像剤担持体4、現像剤規制部材5、搬送スクリュ6、7、矢印D方向に回転するトナー搬送部材33、ブラシローラ34等を備えている。ここで、トナー搬送部材33は、表面上のトナーを静電気力によってクラウド化するための搬送電極を有し、該潜像担持体1に対向する現像領域に向けて矢印D方向の回転によりトナーを搬送する。ここでは、トナー搬送部材33は、表面に形成される複数の電極が櫛歯状の2組の電極構成とし、180位相が異なる2相の搬送パルスを印加することでトナーを表面からホッピングさせる。そして、トナー搬送部材33上でのトナーの供給領域から現像領域、回収領域への搬送は、トナー搬送部材33が機械的に回転することで行う。そして、現像領域では2相の搬送パルスの平均電位が、潜像担持体1の画像部電位と非画像部電位の間となる関係に設定することで現像が行われ、現像に使用されないトナーは回収領域に回転搬送されてブラシローラ34によって回収される。   Further, the toner transport substrates 13 and 30 obtained in this embodiment can be mounted on a developing device different from the developing device shown in FIG. Next, the configuration of another developing device will be described. FIG. 9 is a configuration diagram illustrating the configuration of another developing device. In FIG. 9, the same members as those described with reference to FIG. As shown in FIG. 9, this developing device is disposed on the side of the latent image carrier 1 rotating in the direction of arrow A, and in the developer container 2, the developer carrier 4 rotating in the direction of arrow B, developing An agent regulating member 5, conveying screws 6 and 7, a toner conveying member 33 rotating in the direction of arrow D, a brush roller 34 and the like are provided. Here, the toner conveying member 33 has a conveying electrode for clouding the toner on the surface by electrostatic force, and the toner is rotated by rotation in the direction of arrow D toward the developing area facing the latent image carrier 1. Transport. Here, the toner conveying member 33 has a two-electrode configuration in which a plurality of electrodes formed on the surface are comb-like, and the toner is hopped from the surface by applying two-phase conveying pulses having different 180 phases. The toner is transported from the toner supply area to the development area and the collection area on the toner transport member 33 by mechanically rotating the toner transport member 33. In the development area, the development is performed by setting the relationship in which the average potential of the two-phase transport pulse is between the image portion potential and the non-image portion potential of the latent image carrier 1, and the toner that is not used for the development is Rotated to the collection area and collected by the brush roller 34.

上記ブラシローラ34は、全周に亘って細い繊維からなるブラシが植えられている。このブラシローラ34は、高速回転して摩擦帯電させる、もしくは、トナー粒子とは逆極性にバイアス電圧を印加してブラシの毛先にトナーを付着させ、機械的にトナーを除去する。ブラシローラ34に印加するバイアス電圧はトナー搬送部材33に印加したバイアス電圧に対して逆極性にする。本実施例の場合、ブラシローラ34は0Vから+100Vの範囲でバイアス電圧を印加している。ブラシローラ34のブラシの毛先に付着したトナー粒子は、ブラシローラ34を回転させることによりブラシ先端に接触させたフリッカーバー35に衝突させ離脱させる。フリッカーバー35の替わりにバイアスローラをブラシ先端に接触させ静電的に回収しても良い。フリッカーバー35によって掻き落とされたトナーは現像装置内に回収される。ブラシローラ34の回転方向は特に規制はしないがトナー搬送部材33のトナー搬送方向と逆方向が望ましい。ブラシローラ34から落下して回収されたトナー粒子は、再び現像剤担持体4の現像剤に捕獲される。   The brush roller 34 is planted with a brush made of fine fibers over the entire circumference. The brush roller 34 rotates at high speed to be triboelectrically charged, or applies a bias voltage having a polarity opposite to that of the toner particles to attach the toner to the brush tip and mechanically remove the toner. The bias voltage applied to the brush roller 34 is opposite in polarity to the bias voltage applied to the toner conveying member 33. In this embodiment, the brush roller 34 applies a bias voltage in the range of 0V to + 100V. The toner particles adhering to the brush tips of the brush roller 34 are caused to collide with the flicker bar 35 brought into contact with the tip of the brush by rotating the brush roller 34 and separated. Instead of the flicker bar 35, a bias roller may be brought into contact with the tip of the brush and electrostatically collected. The toner scraped off by the flicker bar 35 is collected in the developing device. Although the rotation direction of the brush roller 34 is not particularly restricted, the direction opposite to the toner conveyance direction of the toner conveyance member 33 is desirable. The toner particles dropped and collected from the brush roller 34 are again captured by the developer on the developer carrier 4.

上記構成の現像装置のトナー搬送部材33として、実施例1乃至3で得られるトナー搬送基板13、30を用いても、高品質な画像を得ることができる。トナー搬送基板13、30は、接合領域に搬送電極がないため、接合時の熱圧着による加圧、加熱等の影響が搬送電極に及ばす、搬送電極に断線等のダメージが生じない。よって、図9に示す現像装置のトナー搬送部材としてトナー搬送基板13、30を用いても、搬送電極のダメージによる画質低下等の虞がない。また、トナー搬送基板13、30は、接合領域での段差が形成されず全周に亘って略平坦に形成され、接合領域の搬送電極面も凹凸がなく平坦に形成される。よって、潜像担持体1とトナー搬送部材33とのギャップ、トナー回収手段(ブラシローラ34)とトナー搬送部材33とのギャップを周方向・軸方向共に均一にでき、現像、トナー回収を良好に行うことができる。なお、ここでは、トナー搬送部材33の接合領域にホッピング電界発生用の搬送電極が無いことが特徴であるが、搬送電極が無い領域の周方向の長さが0.1〜0.3mmであれば、ホッピングしているトナーによる現像濃度への影響は無視できる。また、上述したように、接合領域で0.1〜0.3mmの搬送電極が無い領域があることで、電極のパタンニング形成後の切断が非常に容易となり、製造工程の歩留まりが向上するという大きい効果がある。   Even when the toner transport substrates 13 and 30 obtained in the first to third embodiments are used as the toner transport member 33 of the developing device having the above configuration, a high-quality image can be obtained. Since the toner transport substrates 13 and 30 do not have a transport electrode in the joining region, the transport electrode is not affected by pressurization, heating, or the like due to thermocompression bonding during joining, and the transport electrode is not damaged. Therefore, even if the toner transport substrates 13 and 30 are used as the toner transport members of the developing device shown in FIG. 9, there is no risk of image quality degradation due to damage to the transport electrodes. Further, the toner transport substrates 13 and 30 are formed to be substantially flat over the entire circumference without forming a step in the joint region, and the transport electrode surface of the joint region is also formed flat without any unevenness. Therefore, the gap between the latent image carrier 1 and the toner conveying member 33 and the gap between the toner collecting means (brush roller 34) and the toner conveying member 33 can be made uniform both in the circumferential direction and in the axial direction, and development and toner collection can be improved. It can be carried out. Here, the feature is that there is no transport electrode for generating a hopping electric field in the joining region of the toner transport member 33, but the circumferential length of the region without the transport electrode is 0.1 to 0.3 mm. For example, the influence on the developing density by the hopping toner can be ignored. In addition, as described above, since there is a region having no transport electrode of 0.1 to 0.3 mm in the joining region, it is very easy to cut after forming the electrode patterning, and the yield of the manufacturing process is improved. There is a big effect.

以上、本実施形態に係る現像装置によれば、トナー搬送部材3の接合領域X(接合剤14)が画像形成に直接関係ない位置に配置されているので、接合領域Xの状態によらず、高品質な画像を得ることができる。また、トナー搬送部材3を円筒状に構成することで、ベルトを複数の軸に巻き回す構成に比べ、コンパクト化を図ることができる。
また、本実施形態に係る現像装置によれば、トナー搬送基板13、30、32の接合領域X、X’、X’’には搬送電極15、16、17が形成されていない。よって、接合領域X、X’、X’’を熱圧着により接合しても加熱、加圧の影響が搬送電極に及ばず、トナー搬送の信頼性が確保される。
また、本実施形態に係る現像装置によれば、トナー搬送基板13、30、32の接合領域X、X’、X’’に搬送電極を形成しない。よって、接合領域X、X’、X’’を熱圧着により接合しても加熱、加圧の影響が搬送電極に及ばず、トナー搬送の信頼性が確保され、高品質な画像を得ることができる。また、トナー搬送部材33を円筒状に構成することで、ベルトを複数の軸に巻き回す構成に比べ、コンパクト化を図ることができる。
また、本実施形態に係る現像装置によれば、熱可塑性接着剤又は熱硬化型接着剤を用いて接合領域X、X’、X’’の接着を図っている。つまり、接合領域X、X’、X’’に加圧、加熱を行うことで十分な機械強度を有する接合部を短時間で形成することができる。
また、本実施形態に係る現像装置によれば、トナー搬送基板13、30の両端部が突き当てられた状態で接合されている。よって、接合領域X、X’で段差が生じにくい。
また、本実施形態に係る現像装置によれば、トナー搬送基板32の両端部が重ね合わされて接合されている。トナー搬送基板の両端部を突き当てた状態で接合する場合に比べ段差が生じやすいが、トナー搬送基板32の接合領域X’’は、画像形成に影響ない位置に配置されているので、接合領域X’’の状態によらず、高品質な画像を得ることができる。
また、本実施形態に係る現像装置によれば、トナー搬送基板13、30、32の接合領域X、X’、X’’に位置合わせのための位置合わせ情報であるアライメントマークa、bが形成されている。よって、接合の際の位置合わせを簡便に行うことができる。
また、本実施形態に係る現像装置によれば、トナー搬送基板13、32のアライメントマークa、bは、トナー搬送部材3の軸方向及び周方向に延びる直線である。よって、トナー搬送部材3の軸方向及び周方向への位置合わせを簡便に、精度よく行うことができる。
また、本実施形態に係る現像装置によれば、トナー搬送基板30の両端部に凹凸形状31が形成されている。この凹凸形状によって、トナー搬送部材3の軸方向及び周方向への位置合わせを簡便に、精度よく行うことができる。
なお、本実施形態に係る現像装置は、図示しないが例えば、潜像担持体上に形成したトナー像を印刷用紙に直接転写する画像形成装置や、潜像担持体上のトナー像を一旦中間転写体に転写し、その後中間転写体上のトナー像を印刷用紙に転写する画像形成装置に搭載することができる。また、ひとつの潜像担持体及びひとつの現像装置4を有するモノクロ画像形成装置であっても、一つの潜像担持体上に各色ごとのトナー像を順次形成し、潜像担持体上の各色トナー像を順次中間転写体又は印刷用紙に重ね合わせて転写するカラー画像形成装置に搭載してよもよい。また例えば、潜像担持体を含む画像形成ユニットを複数組並べて配置し、各画像形成ユニットの潜像担持体上に互いに異なる色のトナー像を形成し、各潜像担持体上のトナー像を中間転写体又は印刷用紙に重ね合わせて転写するタンデム型のカラー画像形成装置に搭載してもよい。いずれの画像形成装置においても、トナー搬送の信頼性が確保され、高品質な画像を得ることができる。また、現像装置のコンパクト化が図られているので、画像形成装置自体のコンパクト化につながり、特にカラー画像形成装置においてはその寄与が大きい。
As described above, according to the developing device according to the present embodiment, the bonding region X (bonding agent 14) of the toner conveying member 3 is disposed at a position not directly related to image formation. High quality images can be obtained. Further, by forming the toner conveying member 3 in a cylindrical shape, it is possible to reduce the size as compared with a configuration in which the belt is wound around a plurality of shafts.
Further, according to the developing device according to the present embodiment, the transport electrodes 15, 16, and 17 are not formed in the joining regions X, X ′, and X ″ of the toner transport substrates 13, 30, and 32. Therefore, even if the joining regions X, X ′, and X ″ are joined by thermocompression bonding, the influence of heating and pressurization does not affect the carrying electrode, and the toner carrying reliability is ensured.
Further, according to the developing device according to the present embodiment, the transport electrodes are not formed in the joining regions X, X ′, and X ″ of the toner transport substrates 13, 30, and 32. Therefore, even if the joining regions X, X ′, and X ″ are joined by thermocompression bonding, the influence of heating and pressurization does not reach the transport electrodes, and the toner transport reliability is ensured and a high-quality image can be obtained. it can. Further, by forming the toner conveying member 33 in a cylindrical shape, it is possible to reduce the size as compared with a configuration in which the belt is wound around a plurality of shafts.
Further, according to the developing device according to the present embodiment, the bonding regions X, X ′, and X ″ are bonded using a thermoplastic adhesive or a thermosetting adhesive. That is, by applying pressure and heating to the bonding regions X, X ′, and X ″, a bonding portion having sufficient mechanical strength can be formed in a short time.
Further, according to the developing device according to the present embodiment, the both ends of the toner transport substrates 13 and 30 are joined in abutment state. Therefore, a step is unlikely to occur in the junction regions X and X ′.
Further, according to the developing device according to the present embodiment, both end portions of the toner transport substrate 32 are overlapped and joined. A step is likely to occur as compared with the case where the both ends of the toner transport substrate are abutted against each other, but the joining region X ″ of the toner transport substrate 32 is disposed at a position that does not affect image formation. A high-quality image can be obtained regardless of the state of X ″.
Further, according to the developing device according to the present embodiment, alignment marks a and b, which are alignment information for alignment, are formed in the bonding regions X, X ′, and X ″ of the toner transport substrates 13, 30, and 32. Has been. Therefore, alignment at the time of joining can be performed simply.
Further, according to the developing device according to the present embodiment, the alignment marks a and b of the toner transport substrates 13 and 32 are straight lines extending in the axial direction and the circumferential direction of the toner transport member 3. Therefore, the alignment of the toner conveying member 3 in the axial direction and the circumferential direction can be performed easily and accurately.
Further, according to the developing device according to the present embodiment, the concavo-convex shape 31 is formed at both ends of the toner transport substrate 30. Due to the uneven shape, alignment of the toner conveying member 3 in the axial direction and the circumferential direction can be performed easily and accurately.
Although not shown, the developing device according to the present embodiment is, for example, an image forming device that directly transfers a toner image formed on a latent image carrier to printing paper, or a temporary transfer of a toner image on the latent image carrier. The image forming apparatus can be mounted on an image forming apparatus that transfers the toner image on the intermediate transfer body to a printing paper. Further, even in a monochrome image forming apparatus having one latent image carrier and one developing device 4, a toner image for each color is sequentially formed on one latent image carrier, and each color on the latent image carrier is formed. You may mount in the color image forming apparatus which superimposes and transfers a toner image on an intermediate transfer body or printing paper sequentially. Further, for example, a plurality of image forming units including latent image carriers are arranged side by side, toner images of different colors are formed on the latent image carriers of each image forming unit, and the toner images on each latent image carrier are You may mount in the tandem-type color image forming apparatus which superimposes and transfers on an intermediate transfer body or printing paper. In any image forming apparatus, the reliability of toner conveyance is ensured, and a high-quality image can be obtained. Further, since the developing device is made compact, the image forming apparatus itself is made compact, and the contribution is large especially in the color image forming apparatus.

二成分現像剤を用いた現像装置の構成を示す概略構成図。FIG. 2 is a schematic configuration diagram illustrating a configuration of a developing device using a two-component developer. トナー搬送部材の周りの構成を説明する模式図。FIG. 4 is a schematic diagram illustrating a configuration around a toner conveying member. トナー回収手段を含む現像装置の構成を示す構成図。FIG. 3 is a configuration diagram illustrating a configuration of a developing device including a toner collecting unit. トナー搬送基板の構成を説明する平面図。FIG. 3 is a plan view illustrating a configuration of a toner transport substrate. 接合装置の構成を示す正面図。The front view which shows the structure of a joining apparatus. 接合装置上でトナー搬送基板の接合を行う様子を説明する平面図。FIG. 6 is a plan view illustrating a state in which the toner transport substrate is bonded on the bonding apparatus. 別の形態で接合位置合わせを行うトナー搬送基板の構成を説明する平面図であって、(a)は接合前のトナー搬送基板の構成を示す平面図、(b)は接合後のトナー搬送基板の構成を示す平面図。FIG. 6 is a plan view illustrating a configuration of a toner transport substrate that performs bonding position alignment in another form, where (a) is a plan view illustrating a configuration of the toner transport substrate before bonding, and (b) is a toner transport substrate after bonding. FIG. 実施例1とは別の形態で接合位置合わせを行う様子を説明する平面図。The top view explaining a mode that joining position alignment is performed with the form different from Example 1. FIG. 別の現像装置の構成を説明する構成図。The block diagram explaining the structure of another image development apparatus.

符号の説明Explanation of symbols

1 潜像担持体
2 現像剤収容器
3、33 トナー搬送部材
4 現像剤担持体
13、30、32 トナー搬送基板
DESCRIPTION OF SYMBOLS 1 Latent image carrier 2 Developer container 3, 33 Toner conveyance member 4 Developer carrier 13, 30, 32 Toner conveyance board

Claims (10)

潜像を担持する潜像担持体と、表面上のトナーを静電気力によって該表面に対し相対移動させ該潜像担持体に対向する現像領域に向けて搬送するための搬送電極を有するトナー搬送手段と、該トナー搬送手段にトナーを供給するトナー供給手段と、該トナー搬送手段上のトナーを回収するトナー回収手段とを備える現像装置において、
上記トナー搬送手段は、絶縁材料からなるトナー搬送基板の両端部に設けられる接合領域が接合されて円筒状に構成され、該トナー搬送基板の接合領域が該トナー供給手段よりも該トナー搬送手段のトナー搬送方向上流側にあって、該トナー回収手段よりも該トナー搬送手段のトナー搬送方向下流側にあることを特徴とする現像装置。
A toner carrying means having a latent image carrying body for carrying a latent image and a carrying electrode for carrying the toner on the surface relative to the surface by electrostatic force and carrying the toner toward a developing area facing the latent image carrying body. A developing device comprising: a toner supplying unit that supplies toner to the toner conveying unit; and a toner collecting unit that collects the toner on the toner conveying unit.
The toner conveying means is formed in a cylindrical shape by joining bonding areas provided at both ends of a toner conveying substrate made of an insulating material, and the bonding area of the toner conveying substrate is more of the toner conveying means than the toner supplying means. A developing device which is located upstream in the toner conveying direction and further downstream in the toner conveying direction of the toner conveying means than the toner collecting means.
請求項1の現像装置において、
上記トナー搬送基板の接合領域には上記搬送電極を形成しないことを特徴とする現像装置。
The developing device according to claim 1.
2. A developing device according to claim 1, wherein said conveying electrode is not formed in a bonding area of said toner conveying substrate.
潜像を担持する潜像担持体と、表面上のトナーを静電気力によってクラウド化するための搬送電極を有し、該潜像担持体に対向する現像領域に向けて回転によりトナーを搬送するトナー搬送手段とを備える現像装置において、
上記トナー搬送手段は、絶縁材料からなるトナー搬送基板の両端部に設けられる接合領域が接合されて円筒状に構成され、該トナー搬送基板の接合領域に上記搬送電極を形成しないことを特徴とする現像装置。
A toner having a latent image bearing member for carrying a latent image and a transport electrode for clouding toner on the surface by electrostatic force, and transporting the toner by rotation toward a developing region facing the latent image bearing member A developing device including a conveying unit;
The toner conveying means is formed in a cylindrical shape by bonding bonding regions provided at both ends of a toner conveying substrate made of an insulating material, and the conveying electrode is not formed in the bonding region of the toner conveying substrate. Development device.
請求項1、2又は3の現像装置において、
上記トナー搬送基板の接合領域は、熱可塑性接着剤又は熱硬化型接着剤により接着されていることを特徴とする現像装置。
The developing device according to claim 1, 2 or 3,
2. A developing apparatus according to claim 1, wherein the joining region of the toner transport substrate is adhered by a thermoplastic adhesive or a thermosetting adhesive.
請求項1、2、3又は4の現像装置において、
上記トナー搬送基板の接合領域は、該トナー搬送基板の両端部が突き当てられた状態で接着されていることを特徴とする現像装置。
The developing device according to claim 1, 2, 3 or 4,
2. A developing device according to claim 1, wherein the joining region of the toner transport substrate is bonded in a state where both ends of the toner transport substrate are in contact with each other.
請求項1、2又は4の現像装置において、
上記トナー搬送基板の接合領域は、該トナー搬送基板の両端部が重ね合わされた状態で接着されていることを特徴とする現像装置。
The developing device according to claim 1, 2, or 4,
2. A developing device according to claim 1, wherein the joining area of the toner transport substrate is bonded in a state where both ends of the toner transport substrate are overlapped.
請求項1、2、3、4、5又は6の現像装置において、
上記トナー搬送基板の接合領域には、位置合わせのための位置合わせ情報が形成されることを特徴とする現像装置。
The developing device according to claim 1, 2, 3, 4, 5 or 6.
A developing device characterized in that alignment information for alignment is formed in a bonding area of the toner transport substrate.
請求項7の現像装置において、
上記位置合わせ用情報は、上記トナー搬送手段の軸方向及び周方向に延びる直線であることを特徴とする現像装置。
The developing device according to claim 7.
The developing apparatus according to claim 1, wherein the alignment information is a straight line extending in an axial direction and a circumferential direction of the toner conveying unit.
請求項5の現像装置において、
上記トナー搬送基板の両端部が突き当てられる突き当て部には、凹凸形状が形成されることを特徴とする現像装置。
The developing device according to claim 5.
The developing device according to claim 1, wherein a concavo-convex shape is formed at an abutting portion against which both end portions of the toner conveying substrate are abutted.
潜像を担持する潜像担持体と、該潜像担持体上の潜像を現像する現像装置とを備える画像形成装置において、
上記現像装置として、請求項1、2、3、4、5、6、7、8又は9の現像装置を用いることを特徴とする画像形成装置。
In an image forming apparatus comprising: a latent image carrier that carries a latent image; and a developing device that develops the latent image on the latent image carrier.
An image forming apparatus using the developing device according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9 as the developing device.
JP2006342473A 2006-12-20 2006-12-20 Developing device and image forming apparatus Withdrawn JP2008152183A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009003163A (en) * 2007-06-21 2009-01-08 Brother Ind Ltd Developer supply device and image forming apparatus
JP2011009448A (en) * 2009-06-25 2011-01-13 Sumitomo Metal Mining Co Ltd Method of manufacturing three-dimensional circuit board
JP2011059727A (en) * 2010-12-24 2011-03-24 Brother Industries Ltd Developer supply device and image forming apparatus
US8112019B2 (en) 2009-03-25 2012-02-07 Brother Kogyo Kabushiki Kaisha Developer supply device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009003163A (en) * 2007-06-21 2009-01-08 Brother Ind Ltd Developer supply device and image forming apparatus
JP4656096B2 (en) * 2007-06-21 2011-03-23 ブラザー工業株式会社 Developer supply apparatus and image forming apparatus
US8112019B2 (en) 2009-03-25 2012-02-07 Brother Kogyo Kabushiki Kaisha Developer supply device
JP2011009448A (en) * 2009-06-25 2011-01-13 Sumitomo Metal Mining Co Ltd Method of manufacturing three-dimensional circuit board
JP2011059727A (en) * 2010-12-24 2011-03-24 Brother Industries Ltd Developer supply device and image forming apparatus

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