JP5278731B2 - Toner agitator, toner container and image forming apparatus - Google Patents

Toner agitator, toner container and image forming apparatus Download PDF

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JP5278731B2
JP5278731B2 JP2008145596A JP2008145596A JP5278731B2 JP 5278731 B2 JP5278731 B2 JP 5278731B2 JP 2008145596 A JP2008145596 A JP 2008145596A JP 2008145596 A JP2008145596 A JP 2008145596A JP 5278731 B2 JP5278731 B2 JP 5278731B2
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toner
rotating member
fixing member
film
agitator
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JP2009294299A (en
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秀明 河合
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Murata Machinery Ltd
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Murata Machinery Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an agitator assembled with reduced workload and easily recycled, and to provide a toner cartridge having the same, and an image forming apparatus. <P>SOLUTION: The agitator 60 includes a rotating member 62, one fixing member 65 engaged and fixed to the rotating member 62, and one or more films 69 to 71 having a toner agitating area parallel with a rotational axial line. By engaging the rotating member 62 with the fixing member 65 in a rotational axial line direction, almost entire lengths of the agitating areas of the films 69 to 71 are held between the rotating member 62 and the fixing member 65. The rotating member 62, the fixing member 65 and the films 69 to 71 are formed of material having compatibility. Thus, the films 69 to 71 are firmly fixed just by engaging one fixing member 65 with the rotating member 62, thereby reducing the working time. Then, the time and efforts required for separating work for recycling are minimized. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、所定の回転軸線まわりに回転可能な回転部材と、前記回転部材に係合固定される固定部材と、前記回転軸線に平行なトナー攪拌領域を有するフィルムとを含むトナー攪拌用アジテータに関する。   The present invention relates to a toner stirring agitator including a rotating member rotatable around a predetermined rotation axis, a fixing member engaged with and fixed to the rotating member, and a film having a toner stirring region parallel to the rotation axis. .

電子写真方式の画像形成装置は、感光ドラム上の静電潜像をトナーで現像するための現像器を備える。現像器内のトナーは、現像に応じて消費されるから、現像器内のトナーが不足しないように現像器にトナーを補給するためのトナーカートリッジが画像形成装置に備えられる。   An electrophotographic image forming apparatus includes a developing device for developing an electrostatic latent image on a photosensitive drum with toner. Since the toner in the developing device is consumed in accordance with the development, the image forming apparatus is provided with a toner cartridge for supplying toner to the developing device so that the toner in the developing device does not run out.

トナーカートリッジは、トナーが収容されるトナー収容部を備える。このトナー収容部内にトナー攪拌用アジテータが設けられる。このトナー攪拌用アジテータは、トナー収容部内のトナーを攪拌してほぐすとともに、現像器に定量のトナーを供給する。トナー攪拌用アジテータは、トナーを攪拌しかつ供給するといった目的から、例えば、弾性を有するシート体を複数枚有することがある。複数枚のシート体は重ねられた状態でアジテータ本体に取り付けられるが、シート体をアジテータ本体に取り付ける際の作業効率を考慮して、予め複数枚のシート体同士を両面テープで貼り合わしたシート積層体が準備される。そして、このシート積層体がアジテータ本体に両面テープで接着された後、アジテータ本体に予め形成された溶着ボスを溶融することで、固定される。   The toner cartridge includes a toner storage unit that stores toner. A toner stirring agitator is provided in the toner storage portion. This agitator for agitating toner agitates and loosens the toner in the toner container, and supplies a constant amount of toner to the developing device. The toner agitator for stirring the toner may have, for example, a plurality of elastic sheet bodies for the purpose of stirring and supplying the toner. Multiple sheets are attached to the agitator body in a stacked state, but in consideration of work efficiency when attaching the sheet body to the agitator body, a sheet stack in which multiple sheets are pasted together with double-sided tape The body is prepared. And after this sheet | seat laminated body is adhere | attached on the agitator main body with a double-sided tape, it fixes by fuse | melting the welding boss | hub previously formed in the agitator main body.

特開平9−22173号公報JP 9-22173 A

シート積層体の貼り合わせとアジテータ本体への貼り付けとは、作業者による手作業で行なわれるため、貼り付け貼り合わせ状態にバラツキがあった。また、トナーカートリッジのリサイクル(分別回収)を考慮すると、アジテータ本体とフィルムと両面テープとを分別しなければならないが、両面テープによって貼り付け貼り合わせされているから、作業者にとって分別作業の作業負担も大きいものであった。   Since the lamination of the sheet laminate and the affixing to the agitator main body are performed manually by an operator, there is a variation in the affixing and pasting state. Considering the recycling of toner cartridges (separate collection), the agitator body, film and double-sided tape must be separated. Was also big.

そこで、本発明は、トナー攪拌用アジテータの組み立て作業を軽減しかつリサイクルを容易に行なえるトナー攪拌用アジテータ、およびこれを備えたトナーカートリッジおよび画像形成装置を提供する。   Accordingly, the present invention provides a toner stirring agitator that can reduce the assembly work of the toner stirring agitator and can be easily recycled, and a toner cartridge and an image forming apparatus including the toner agitator.

本願の請求項1では、以下の構成が提供される。即ち、トナー攪拌用アジテータは、所定の回転軸線まわりに回転可能な回転部材と、前記回転部材に係合固定される1つの固定部材と、前記回転軸線に平行なトナー攪拌領域を有する1枚以上のフィルムとを含み、前記回転部材と前記固定部材とが前記回転軸線方向に沿って係合することにより、前記フィルムの前記攪拌領域の略全長が、前記回転部材と前記固定部材との間に挟み込まれる。また、前記フィルムは複数枚あって、各フィルムには前記回転軸線に直交方向であって互いに同一方向に突出するタブが形成され、全フィルムが前記回転部材と前記固定部材との間に挟み込まれた状態において各フィルムのタブが互いに重なり合わない。 In claim 1 of the present application, the following configuration is provided. That is, the toner agitator for agitation includes at least one rotating member that can rotate around a predetermined rotation axis, one fixing member that is engaged and fixed to the rotation member, and a toner agitation region that is parallel to the rotation axis. The rotation member and the fixing member are engaged along the rotation axis direction so that the substantially entire length of the stirring region of the film is between the rotation member and the fixing member. It is caught. Further, there are a plurality of the films, and each film is formed with a tab that is orthogonal to the rotation axis and protrudes in the same direction , and the entire film is sandwiched between the rotating member and the fixing member. In such a state, the tabs of the films do not overlap each other.

これによると、回転部材に対して1つの固定部材を回転軸線方向に沿って係合固定することにより、フィルムは、そのフィルムの攪拌領域の1辺における略全長を含むように、回転部材と固定部材との間で挟み込まれる。従って、回転部材に対して1つの固定部材を係合させるといった1つの取付作業により、フィルムの攪拌領域の1辺の略全長を挟み込める。従って、トナー攪拌用アジテータの組み立て作業時間が短縮され、かつ、しっかりとフィルムが回転部材に組み付けられる。また、全フィルムが回転部材と固定部材との間に挟み込まれた状態において、各フィルムのタブが重なり合わないようにしている。つまり、複数枚のフィルムのタブが回転軸線に沿って重なり合わずに並ぶ。そのため、作業者がフィルムをトナー攪拌用アジテータに組み付ける際に、各フィルムがアジテータに正しく組みつけられているか把握できる。 According to this, by fixing one fixing member to the rotation member along the rotation axis direction, the film is fixed to the rotation member so as to include substantially the entire length of one side of the stirring region of the film. It is sandwiched between members. Therefore, the substantially entire length of one side of the stirring region of the film can be sandwiched by one mounting operation in which one fixing member is engaged with the rotating member. Therefore, the time for assembling the agitator for stirring the toner is shortened, and the film is firmly assembled to the rotating member. Further, the tabs of the respective films are prevented from overlapping when all the films are sandwiched between the rotating member and the fixed member. That is, the tabs of a plurality of films are arranged without overlapping each other along the rotation axis. Therefore, when an operator assembles the film on the toner agitator, it can be grasped whether each film is correctly assembled on the agitator.

本願の請求項2では、以下の構成が提供される。即ち、前記回転部材および前記固定部材のいずれか一方に係合凸部が形成され、前記回転部材および前記固定部材の他方に係合凹部が形成され、該係合凸部と係合凹部とが係合して前記回転部材に前記固定部材が係合固定され、前記フィルムには、前記係合凸部が挿通される切欠が形成される。   In claim 2 of the present application, the following configuration is provided. That is, an engaging convex portion is formed on one of the rotating member and the fixing member, an engaging concave portion is formed on the other of the rotating member and the fixing member, and the engaging convex portion and the engaging concave portion are The fixing member is engaged and fixed to the rotating member by engaging, and the film is formed with a notch through which the engaging convex portion is inserted.

これによると、回転部材と固定部材にそれぞれ形成された係合凸部および係合凹部が互いに係合し合うから、その結果、回転部材と固定部材とは係合固定される。加えて、フィルムには係合凸部が挿通される切欠が形成されており、フィルムは、回転部材および固定部材のいずれかに形成された係合凸部に挿通され、この挿通された状態で回転部材と固定部材との間に挟み込まれる。そのため、フィルムは、回転部材および固定部材に挟み込まれた状態から外れず、しっかり保持される。   According to this, the engaging convex portion and the engaging concave portion formed respectively on the rotating member and the fixing member engage with each other, and as a result, the rotating member and the fixing member are engaged and fixed. In addition, the film is formed with a notch through which the engaging convex portion is inserted, and the film is inserted into the engaging convex portion formed in one of the rotating member and the fixed member, and in this inserted state. It is sandwiched between the rotating member and the fixed member. Therefore, the film is firmly held without being removed from the state of being sandwiched between the rotating member and the fixed member.

本願の請求項3では、以下の構成が提供される。前記回転部材および前記固定部材のいずれか一方には、前記回転軸線に沿って1つ以上の位置決め突部が形成され、前記回転部材および前記固定部材の他方には、前記位置決め突部が挿通される位置決め切欠が形成され、前記フィルムにも前記位置決め突部が挿通される位置決め切欠が形成される。   In claim 3 of the present application, the following configuration is provided. One of the rotating member and the fixed member is formed with one or more positioning protrusions along the rotation axis, and the other of the rotating member and the fixing member is inserted with the positioning protrusion. A positioning notch through which the positioning protrusion is inserted is also formed in the film.

これによると、回転部材および固定部材の一方に位置決め突部および位置決め切欠の一方が形成され、回転部材および固定部材の他方に位置決め突部および位置決め切欠の他方が形成され、位置決め突部は位置決め切欠に挿通される。また、フィルムにも位置決め切欠が形成され、位置決め突部がフィルムの位置決め切欠に挿通される。こうして、回転部材と固定部材とフィルムとの三者の位置関係が正確に定められる。   According to this, one of the positioning protrusion and the positioning notch is formed on one of the rotating member and the fixed member, the other of the positioning protrusion and the positioning notch is formed on the other of the rotating member and the fixing member, and the positioning protrusion is the positioning notch Is inserted. Also, a positioning notch is formed in the film, and the positioning protrusion is inserted through the positioning notch of the film. In this way, the positional relationship between the rotating member, the fixing member, and the film is accurately determined.

本願の請求項4では、以下の構成が提供される。即ち、前記回転部材、固定部材およびフィルムは、相溶性を有する材料で形成される。   In claim 4 of the present application, the following configuration is provided. That is, the rotating member, the fixing member, and the film are formed of compatible materials.

これによると、回転部材、固定部材およびフィルムが相溶性を有するため、これらの部材を分別回収することなくリサイクル処理できる。そのため、作業者の分別作業が省略される。   According to this, since the rotating member, the fixing member, and the film have compatibility, these members can be recycled without being collected separately. Therefore, the operator's separation work is omitted.

本願の請求項5、6では、以下の構成が提供される。即ち、トナー収容容器は、アジテータを回転可能に支持するとともにトナーを収容するケーシングを有する。さらに、前記トナー収容容器は、前記アジテータを構成する回転部材、固定部材およびフィルムと、前記ケーシングとが、相溶性を有する材料で形成される。 In claims 5 and 6 of the present application, the following configuration is provided. That is, the toner storage container includes a casing that rotatably supports the agitator and stores toner. Further, in the toner container, the rotating member, the fixing member, and the film constituting the agitator, and the casing are formed of compatible materials.

これによると、トナー収容容器は、トナーを収容するケーシングを有し、その内部に回転可能に支持されるアジテータと一体とされる。また、回転部材、固定部材、フィルムおよびケーシングは相溶性を有する材料で形成されるため、トナー収容容器を分別せずとも一体としてリサイクル処理できる。従って、分別作業の手間が省け、リサイクル作業時間が省略される。たとえ、トナー収容容器に他の部材が組み付けられていても、その部材のみ分別作業を行えば済み、リサイクル作業時間が短縮される。   According to this, the toner storage container has a casing for storing toner, and is integrated with an agitator that is rotatably supported therein. In addition, since the rotating member, the fixing member, the film, and the casing are formed of compatible materials, the toner container can be recycled without being separated. Therefore, the labor of sorting work is saved and the recycling work time is omitted. For example, even if another member is assembled in the toner container, it is only necessary to perform the sorting operation on that member, and the recycling work time is shortened.

本願の請求項では、以下の構成が提供される。即ち、画像形成装置は、画像形成装置本体と、トナー収容容器とを含み、該トナー収容容器は前記画像形成装置本体に対して交換可能である。 In claim 7 of the present application, the following configuration is provided. That is, the image forming apparatus includes an image forming apparatus main body and a toner storage container, and the toner storage container is replaceable with respect to the image forming apparatus main body.

これによると、画像形成装置は、画像形成装置本体とトナー収容容器とを含んでいるため、トナー収容容器を一体的に使用できる。さらに、トナー収容容器は画像形成装置本体に対して交換可能であるため、トナー収容容器のトナーが空になると、トナー収容容器を交換してトナーを補充できる。   According to this, since the image forming apparatus includes the image forming apparatus main body and the toner container, the toner container can be used integrally. Further, since the toner container can be replaced with the main body of the image forming apparatus, when the toner in the toner container becomes empty, the toner container can be replaced to replenish the toner.

本発明によると、トナー攪拌用アジテータの組み立て作業を軽減でき、かつリサイクルを容易に行なえる。   According to the present invention, the assembly work of the toner agitator for agitation of toner can be reduced, and recycling can be easily performed.

以下、本発明の実施形態を詳しく説明する。なお、以下に説明する実施形態は、本発明を実施するにあたって好ましい具体例であるから、技術的に種々の限定がなされているが、本発明は、以下の説明において特に本発明を限定する旨明記されていない限り、これらの形態に限定されるものではない。図1は、本発明の実施の一形態のアジテータ60を備えた画像形成装置1の正面断面図である。画像形成装置1は、電子写真方式により画像形成を行う装置であって、給紙部2、画像形成部3、トナーカートリッジ50、排紙部5およびそれらを支持するケーシング7を含んで構成される。   Hereinafter, embodiments of the present invention will be described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms. FIG. 1 is a front sectional view of an image forming apparatus 1 including an agitator 60 according to an embodiment of the present invention. The image forming apparatus 1 is an apparatus that forms an image by an electrophotographic method, and includes a paper feeding unit 2, an image forming unit 3, a toner cartridge 50, a paper discharge unit 5, and a casing 7 that supports them. .

画像形成プロセスを説明する。給紙部2に蓄積された用紙などの記録媒体がピックアップローラ10によって画像形成部3に逐次送り出される。記録媒体は、主搬送路9を通りながら、搬送ローラ12によってさらに下流側に送り出される。画像形成部3において、記録媒体上に画像形成が行われ、そして記録媒体は排出ローラ15によって排出部5へ排紙される。   An image forming process will be described. A recording medium such as paper accumulated in the paper feeding unit 2 is sequentially sent to the image forming unit 3 by the pickup roller 10. The recording medium is sent further downstream by the conveyance roller 12 while passing through the main conveyance path 9. In the image forming unit 3, an image is formed on the recording medium, and the recording medium is discharged to the discharge unit 5 by the discharge roller 15.

次に、画像形成部3について説明する。画像形成部3は、感光ドラムユニット20、現像ユニット30および定着ユニット40を含んで構成され、感光ドラムユニット20および現像ユニット30は、画像形成装置1に着脱自在に装着される。   Next, the image forming unit 3 will be described. The image forming unit 3 includes a photosensitive drum unit 20, a developing unit 30, and a fixing unit 40, and the photosensitive drum unit 20 and the developing unit 30 are detachably attached to the image forming apparatus 1.

この感光ドラムユニット20は、コロナ放電方式の帯電器21、感光ドラム24およびクリーニング装置28を含み、これらがユニットとして構成される。搬送ローラ12によって送り出された記録媒体が感光ドラム24と転写ローラ26とのニップ位置に到達する前に、感光ドラム24は、帯電器21によってその周面が一様な電位に帯電される。そして、露光器22によって感光ドラム24が露光され、感光ドラム24の周面に静電潜像が形成される。   The photosensitive drum unit 20 includes a corona discharge type charger 21, a photosensitive drum 24, and a cleaning device 28, which are configured as a unit. Before the recording medium sent out by the conveying roller 12 reaches the nip position between the photosensitive drum 24 and the transfer roller 26, the peripheral surface of the photosensitive drum 24 is charged to a uniform potential by the charger 21. Then, the exposure device 22 exposes the photosensitive drum 24 to form an electrostatic latent image on the peripheral surface of the photosensitive drum 24.

現像ユニット30は、マグローラ32、一対のオーガ35およびパドル37を含み、これらがユニットとして構成される。この現像ユニット30が感光ドラム24の周面上にトナーを搬出し可視像化する。詳しくは、オーガ35は、現像ユニット30に収容されているトナーを攪拌しつつ帯電させ、帯電されたトナーをパドル37へ搬送する。そして、パドル37は、搬送されたトナーをさらにマグローラ32の周面に搬送し付着させる。マグローラ32は、感光ドラム24と距離を空けて回転しつつ、感光ドラム24の周面にトナーを付着させる。こうして、感光ドラム24の周面上に形成された静電潜像は、トナーにより可視像化される。   The developing unit 30 includes a mag roller 32, a pair of augers 35, and a paddle 37, which are configured as a unit. The developing unit 30 carries the toner onto the peripheral surface of the photosensitive drum 24 to form a visible image. Specifically, the auger 35 charges the toner contained in the developing unit 30 while stirring, and conveys the charged toner to the paddle 37. The paddle 37 further transports and adheres the transported toner to the peripheral surface of the mag roller 32. The magnet roller 32 adheres toner to the peripheral surface of the photosensitive drum 24 while rotating at a distance from the photosensitive drum 24. Thus, the electrostatic latent image formed on the peripheral surface of the photosensitive drum 24 is visualized with toner.

そして、記録媒体が感光ドラム24と転写ローラ26とのニップ位置に到達したとき、転写ローラ26に電圧が印加され、可視像化されたトナーが記録媒体上に転写される。トナーが転写された記録媒体は、感光体ドラム24および転写ローラ26によって、主搬送路9をさらに下流側へ送り出される。   When the recording medium reaches the nip position between the photosensitive drum 24 and the transfer roller 26, a voltage is applied to the transfer roller 26, and the visualized toner is transferred onto the recording medium. The recording medium onto which the toner has been transferred is sent further down the main transport path 9 by the photosensitive drum 24 and the transfer roller 26.

転写後になお感光ドラム24に残っている未転写トナーを除去するため、クリーニング装置28のブレード(不図示)が感光ドラム24上から未転写のトナーを剥ぎ取る。剥ぎ取られたトナーは、クリーニング装置28内に収容され、図示しない廃トナーボックスに回収される。   In order to remove untransferred toner still remaining on the photosensitive drum 24 after the transfer, a blade (not shown) of the cleaning device 28 peels off the untransferred toner from the photosensitive drum 24. The removed toner is accommodated in the cleaning device 28 and collected in a waste toner box (not shown).

トナーが転写された記録媒体は、定着ユニット40に到達すると、定着ユニット40を構成する加熱ローラ41および加圧ローラ42によって、同時に加熱・加圧され、トナー像はその記録媒体上に定着される。定着された記録媒体は、前記の通り、排出ローラ15により排紙される。   When the recording medium onto which the toner has been transferred reaches the fixing unit 40, it is simultaneously heated and pressurized by the heating roller 41 and the pressure roller 42 that constitute the fixing unit 40, and the toner image is fixed on the recording medium. . The fixed recording medium is discharged by the discharge roller 15 as described above.

次に、トナーカートリッジ50について図2を参照して説明する。図2は、本発明の一実施形態のトナーカートリッジ50の正面断面図である。トナーカートリッジ50は、画像形成装置1に対して着脱自在に装着される。トナーカートリッジ50は、ケーシング55、スクリュー58および所定の回転軸線まわりに回転するアジテータ60を含み、これらがユニットとして構成される。トナーカートリッジ50は、画像形成装置1、つまり現像ユニット30にトナーを補給する。トナーカートリッジ50は、ケーシング55内のトナーが空になると、新たなトナーカートリッジに取り替えられる。   Next, the toner cartridge 50 will be described with reference to FIG. FIG. 2 is a front sectional view of the toner cartridge 50 according to the embodiment of the present invention. The toner cartridge 50 is detachably attached to the image forming apparatus 1. The toner cartridge 50 includes a casing 55, a screw 58, and an agitator 60 that rotates about a predetermined rotation axis, and these are configured as a unit. The toner cartridge 50 supplies toner to the image forming apparatus 1, that is, the developing unit 30. When the toner in the casing 55 becomes empty, the toner cartridge 50 is replaced with a new toner cartridge.

アジテータ60およびスクリュー58は、ケーシング55に回転可能に支持される。アジテータ60およびスクリュー58は、図示しない駆動源から回転動力が伝えられて回転することにより、ケーシング55内に収容されているトナーを攪拌してほぐしつつ、搬送して現像ユニット30にトナーを補給する。スクリュー58は、ケーシング55のトナー送り出し位置において、図2の正面方向奥側から挿入され、図示しない止輪などによって抜け止めされる。   The agitator 60 and the screw 58 are rotatably supported by the casing 55. The agitator 60 and the screw 58 are rotated by a rotational power transmitted from a driving source (not shown), thereby agitating and loosening the toner contained in the casing 55 to convey and replenish the toner to the developing unit 30. . The screw 58 is inserted from the rear side in the front direction of FIG. 2 at the toner delivery position of the casing 55 and is prevented from coming off by a retaining ring (not shown).

アジテータ60について、図2〜4を参照して詳細に説明する。図3は本発明の一実施形態のアジテータ60の斜視図であり、図4はアジテータ60の分解斜視図である。アジテータ60は、1つの回転部材62と1つの固定部材65と3枚のフィルム積層体68とを含んで構成される。   The agitator 60 will be described in detail with reference to FIGS. FIG. 3 is a perspective view of an agitator 60 according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view of the agitator 60. The agitator 60 includes one rotating member 62, one fixing member 65, and three film laminates 68.

回転部材62は、ケーシング55に回転可能に支持され、回転軸線に沿って延びる枠体であって、枠体内において格子状にリブが形成される。回転部材62は、この格子状のリブによって、ケーシング55内のトナーを攪拌してほぐす機能を持つ。この回転部材62の一側面に、長手方向に垂直な方向に突出する係合凸部対63が複数個(本実施形態では4個)形成され、各係合凸部対63は、長手方向に沿って、所定の間隔を空けて一列に並んで設けられる。係合凸部対63は、一対の係合凸部63A、63Bによって形成され、各係合凸部63A、63Bはその基端から遊端に向けて両者の間隔が広がるように、回転部材本体60Aとともに一体的に樹脂成型される。そして、各係合凸部63A、63Bの遊端に、互いに離反した状態で爪部63Cが形成される。   The rotating member 62 is a frame that is rotatably supported by the casing 55 and extends along the rotation axis, and ribs are formed in a lattice shape in the frame. The rotating member 62 has a function of stirring and loosening the toner in the casing 55 by the lattice-like ribs. A plurality (four in this embodiment) of engaging projections 63 projecting in a direction perpendicular to the longitudinal direction are formed on one side of the rotating member 62, and each of the engaging projections 63 is arranged in the longitudinal direction. And are arranged in a line at predetermined intervals. The engaging convex portion pair 63 is formed by a pair of engaging convex portions 63A and 63B, and the engaging convex portions 63A and 63B have a rotating member main body so that the distance between both ends increases from the base end toward the free end. It is integrally molded with 60A. And the claw part 63C is formed in the free end of each engagement convex part 63A, 63B in the state which mutually separated.

剛性樹脂製の固定部材65は、長尺の薄板状の部材であって、係合凸部対63に係合する係合凹部66を、係合凸部対63と同数形成される。係合凹部66は、厚み方向において矩形状に貫通されて形成され、係合凹部66の長手方向の一辺は、固定部材65の長手方向における係合凸部対63の幅より短く形成されている。つまり、係合凹部66の一辺が短く形成されることで、係合凹部66の貫通孔が係合凸部対63の開き幅より小さくなり、係合凸部対63と係合凹部66とが係合し合ったとき、しっかりと係合され抜けにくい。これらの複数の係合凸部対63と各係合凸部対に個別に対応する係合凹部66とがそれぞれ係合し合うことにより、回転部材62に固定部材65が固定される。なお、本実施形態では、回転部材62に係合凸部対63が形成され、固定部材65に係合凹部66が形成された例を説明したが、この限りでなく、係合凸部63と係合凹部66とが逆の構成も本発明の範囲に含まれる。   The rigid resin-made fixing member 65 is a long thin plate-like member, and the same number of engagement concave portions 66 as the engagement convex portion pairs 63 are formed. The engagement recess 66 is formed to penetrate in a rectangular shape in the thickness direction, and one side in the longitudinal direction of the engagement recess 66 is formed to be shorter than the width of the engagement projection pair 63 in the longitudinal direction of the fixing member 65. . That is, by forming one side of the engagement concave portion 66 short, the through hole of the engagement concave portion 66 becomes smaller than the opening width of the engagement convex portion pair 63, and the engagement convex portion pair 63 and the engagement concave portion 66 are formed. When engaged, they are firmly engaged and difficult to come off. The fixing member 65 is fixed to the rotating member 62 by engaging the plurality of engaging convex pairs 63 and the engaging concave portions 66 individually corresponding to the engaging convex pairs. In the present embodiment, the example in which the engaging convex portion pair 63 is formed on the rotating member 62 and the engaging concave portion 66 is formed on the fixing member 65 has been described. A configuration in which the engagement recess 66 is reversed is also included in the scope of the present invention.

フィルム積層体68は、ケーシング55内のトナーを攪拌・搬送する機能を有し、本実施形態では3枚のフィルム69〜71を重ね合わせて構成される。上層フィルム69および下層フィルム70は、トナーの攪拌性を向上させるため互いに外向きに折り曲げられ、中層フィルム71は、回転軸線に垂直な方向において、上下層フィルム69,70より短く形成されている。また、各フィルム69〜71には、各係合凸部対63が挿通される切欠73が形成され、この切欠73は、係合凸部対63および係合凹部66と同じ数が準備される。そして、各フィルム69〜71の各切欠73に、それぞれ対応した係合凸部対63が挿通された状態において、回転部材62の係合凸部対63と固定部材65の係合凹部66とが係合し、長手方向の攪拌領域80において、フィルム積層体68の略全長が、回転部材62と固定部材65との間に挟み込まれる。このとき、フィルム積層体68は、回転軸線に対して平行に位置する。   The film laminate 68 has a function of stirring and conveying the toner in the casing 55, and in the present embodiment, the film laminate 68 is configured by superimposing three films 69 to 71. The upper layer film 69 and the lower layer film 70 are folded outward to improve the stirring property of the toner, and the middle layer film 71 is formed shorter than the upper and lower layer films 69 and 70 in the direction perpendicular to the rotation axis. Each film 69-71 is formed with a notch 73 through which each pair of engaging protrusions 63 is inserted, and the same number of notches 73 as the pair of engaging protrusions 63 and the engaging recesses 66 are prepared. . Then, in the state in which the corresponding engagement convex portion pair 63 is inserted into each notch 73 of each film 69 to 71, the engagement convex portion pair 63 of the rotating member 62 and the engagement concave portion 66 of the fixing member 65 are formed. The substantially entire length of the film laminate 68 is sandwiched between the rotating member 62 and the fixed member 65 in the longitudinal stirring region 80. At this time, the film laminate 68 is positioned parallel to the rotation axis.

つまり、1列に並べた係合凸部対63を有する回転部材62に対して1つの固定部材65を係合させる、たった一回の固定作業により、フィルム積層体68の長手方向における攪拌領域80の略全長を挟み込むことができる。そのため、アジテータ60の組み立て作業時間が従来方法に比べて短縮され、かつ、しっかりとフィルム68が回転部材62に組み付けられる。   That is, the stirring region 80 in the longitudinal direction of the film laminate 68 is obtained by a single fixing operation in which one fixing member 65 is engaged with the rotating member 62 having the engaging convex pair 63 arranged in a row. Can be sandwiched between almost the entire length. Therefore, the assembling time of the agitator 60 is shortened compared to the conventional method, and the film 68 is firmly assembled to the rotating member 62.

さらに、回転部材62の係合凸部対63が挿通された状態で、フィルム68が回転部材62と固定部材65との間に挟み込まれるため、フィルム68は、回転部材62および固定部材65に挟み込まれた状態から外れずにしっかり保持される。   Further, since the film 68 is sandwiched between the rotating member 62 and the fixing member 65 in a state where the engaging convex pair 63 of the rotating member 62 is inserted, the film 68 is sandwiched between the rotating member 62 and the fixing member 65. It is firmly held without coming out of the state.

なお、回転部材62には、回転軸線に沿って複数の位置決め突部64が形成され、固定部材65および各フィルム69〜71に、位置決め突部64と同数の位置決め切欠67、75が形成される。位置決め突部64が、位置決め切欠67,75に挿通され、この挿通された状態で係合凸部63と係合凹部66と係合して、回転部材62に固定部材65が固定される。こうして、係合凸部対63と係合凹部66の係合関係だけで回転部材62と固定部材65とを固定する場合に比較して、回転部材62、固定部材64および各フィルム69〜71の相互の位置関係が正確に定められる。   The rotation member 62 has a plurality of positioning protrusions 64 formed along the rotation axis, and the fixing member 65 and the films 69 to 71 have the same number of positioning notches 67 and 75 as the positioning protrusions 64. . The positioning protrusion 64 is inserted into the positioning notches 67 and 75, and in this inserted state, the engaging protrusion 63 and the engaging recess 66 are engaged, and the fixing member 65 is fixed to the rotating member 62. Thus, compared with the case where the rotating member 62 and the fixing member 65 are fixed only by the engaging relationship between the engaging convex pair 63 and the engaging concave portion 66, the rotating member 62, the fixing member 64, and the films 69 to 71 are fixed. The mutual positional relationship is accurately determined.

また、材質において、アジテータ60を構成する各部材62,65,69,70,71は相溶性を有する。つまり、回転部材62、固定部材65およびフィルム69〜71は相溶性を有する材質、詳しくは、回転部材と固定部材65とをアクリルニトリルブタジエンスチレン(ABS)で形成し、フィルム69〜71をポリエチレンテレフタレート(PET)で形成している。そのため、これらの部材62,65,69,70,71を分別して回収することなくリサイクル処理でき、作業者の分別作業が省略される。   Moreover, in the material, each member 62, 65, 69, 70, 71 which comprises the agitator 60 has compatibility. That is, the rotating member 62, the fixing member 65, and the films 69 to 71 are compatible materials. Specifically, the rotating member and the fixing member 65 are made of acrylonitrile butadiene styrene (ABS), and the films 69 to 71 are made of polyethylene terephthalate. (PET). Therefore, these members 62, 65, 69, 70, 71 can be recycled without being separated and collected, and the operator's separation work is omitted.

また、各フィルム68には、回転軸線に直交する方向に突出しているタブ69A、70A、71Aを有し、各フィルム69〜71が回転部材62に組み付けられた状態で、これらの各タブ72は互いに重なり合わないように設定される。本実施形態では、矢示85から見た場合において(図4参照)、各フィルム69〜71において、タブ69Aは手前側右端に位置し、タブ70Aは手前側中央部に位置し、タブ71Aは手前側左端に位置する。従って、作業者は、各フィルム69〜71を組み付けたときに、各タブ69A、70A、71Aの重なり具合をチェックすることで、各フィルム69〜71の組み付けの正否を把握できる。   Each film 68 has tabs 69A, 70A, 71A projecting in a direction orthogonal to the rotation axis, and each of the tabs 72 is in a state where the films 69 to 71 are assembled to the rotating member 62. It is set not to overlap each other. In the present embodiment, when viewed from the arrow 85 (see FIG. 4), in each of the films 69 to 71, the tab 69A is located at the right end on the near side, the tab 70A is located at the center on the near side, and the tab 71A is Located at the left end on the front side. Therefore, the operator can grasp whether the films 69 to 71 are assembled correctly by checking the overlapping state of the tabs 69A, 70A and 71A when the films 69 to 71 are assembled.

さらに、アジテータ60を構成する各部材62,65,69,70,71とケーシング55とが相溶性を有する材料で形成される。詳しくは、ケーシング55もABSで形成される。そのため、作業者は、トナーカートリッジ50から、スクリュー58を脱着するだけで分別作業を完了できる。従って、リサイクル作業時間が短縮できる。   Furthermore, each member 62, 65, 69, 70, 71 and the casing 55 constituting the agitator 60 and the casing 55 are formed of compatible materials. Specifically, the casing 55 is also formed of ABS. Therefore, the operator can complete the sorting operation by simply removing the screw 58 from the toner cartridge 50. Accordingly, the recycling work time can be shortened.

本発明の一実施形態であるアジテータを備えた画像形成装置を示す正面断面図である。1 is a front sectional view showing an image forming apparatus including an agitator according to an embodiment of the present invention. 本発明の一実施形態であるアジテータを備えたトナーカートリッジを示す正面断面図である。1 is a front cross-sectional view illustrating a toner cartridge including an agitator according to an embodiment of the present invention. 本発明の一実施形態であるアジテータを示す斜視図である。It is a perspective view which shows the agitator which is one Embodiment of this invention. 本発明の一実施形態であるアジテータを示す分解斜視図である。It is a disassembled perspective view which shows the agitator which is one Embodiment of this invention.

符号の説明Explanation of symbols

1 画像形成装置
30 現像ユニット
50 トナーカートリッジ(トナー収容容器)
60 アジテータ
62 回転部材
65 固定部材
69〜71 フィルム
DESCRIPTION OF SYMBOLS 1 Image forming apparatus 30 Developing unit 50 Toner cartridge (toner container)
60 Agitator 62 Rotating member 65 Fixed member 69-71 Film

Claims (7)

所定の回転軸線まわりに回転可能な回転部材と、前記回転部材に係合固定される1つの固定部材と、前記回転軸線に平行なトナー攪拌領域を有する1枚以上のフィルムとを含み、
前記回転部材と前記固定部材とが前記回転軸線方向に沿って係合することにより、前記フィルムの前記攪拌領域の略全長が、前記回転部材と前記固定部材との間に挟み込まれ、
前記フィルムは複数枚あって、各フィルムには前記回転軸線に直交する方向であって互いに同一方向に突出するタブが形成され、全フィルムが前記回転部材と前記固定部材との間に挟み込まれた状態において各フィルムのタブが互いに重なり合わない、ことを特徴とするトナー攪拌用アジテータ。
A rotation member rotatable around a predetermined rotation axis, one fixing member engaged and fixed to the rotation member, and one or more films having a toner stirring region parallel to the rotation axis,
By engaging the rotating member and the fixing member along the rotation axis direction, the substantially entire length of the stirring region of the film is sandwiched between the rotating member and the fixing member,
There are a plurality of the films, and each film is formed with tabs that are perpendicular to the rotation axis and project in the same direction , and the entire film is sandwiched between the rotating member and the fixing member. A toner agitator, wherein the tabs of the respective films do not overlap each other in a state.
前記回転部材および前記固定部材のいずれか一方に係合凸部が形成され、前記回転部材および前記固定部材の他方に係合凹部が形成され、該係合凸部と係合凹部とが係合して前記回転部材に前記固定部材が係合固定され、前記フィルムには、前記係合凸部が挿通される切欠が形成される、ことを特徴とする請求項1に記載のトナー攪拌用アジテータ。   An engaging convex portion is formed on one of the rotating member and the fixing member, an engaging concave portion is formed on the other of the rotating member and the fixing member, and the engaging convex portion and the engaging concave portion are engaged. The toner agitator according to claim 1, wherein the fixing member is engaged and fixed to the rotating member, and the film is formed with a notch through which the engaging convex portion is inserted. . 前記回転部材および前記固定部材のいずれか一方には、前記回転軸線に沿って1つ以上の位置決め突部が形成され、前記回転部材および前記固定部材の他方には、前記位置決め突部が挿通される位置決め切欠が形成され、前記フィルムにも前記位置決め突部が挿通される位置決め切欠が形成される、ことを特徴とする請求項1または2に記載のトナー攪拌用アジテータ。   One of the rotating member and the fixed member is formed with one or more positioning protrusions along the rotation axis, and the other of the rotating member and the fixing member is inserted with the positioning protrusion. 3. The toner agitator according to claim 1, wherein a positioning notch through which the positioning protrusion is inserted is formed in the film. 前記回転部材、固定部材およびフィルムは、相溶性を有する材料で形成される、ことを特徴とする請求項1〜3のいずれかに記載のトナー攪拌用アジテータ。   4. The toner agitator according to claim 1, wherein the rotating member, the fixing member, and the film are formed of compatible materials. 請求項1〜4のいずれかに記載のアジテータを回転可能に支持するとともにトナーを収容するケーシングを有する、トナー収容容器。A toner storage container having a casing for rotatably supporting the agitator according to claim 1 and storing toner. 前記アジテータを構成する回転部材、固定部材およびフィルムと、前記ケーシングとが、相溶性を有する材料で形成される、ことを特徴とする請求項5に記載のトナー収容容器。The toner container according to claim 5, wherein the rotating member, the fixing member and the film constituting the agitator, and the casing are formed of compatible materials. 画像形成装置本体と、請求項5または6に記載のトナー収容容器とを含み、該トナー収容容器は前記画像形成装置本体に対して交換可能である、ことを特徴とする画像形成装置。An image forming apparatus comprising: an image forming apparatus body; and the toner container according to claim 5, wherein the toner container is replaceable with respect to the image forming apparatus body.
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