JP4992495B2 - Cleaning device, image carrier unit, and image forming apparatus - Google Patents

Cleaning device, image carrier unit, and image forming apparatus Download PDF

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JP4992495B2
JP4992495B2 JP2007069260A JP2007069260A JP4992495B2 JP 4992495 B2 JP4992495 B2 JP 4992495B2 JP 2007069260 A JP2007069260 A JP 2007069260A JP 2007069260 A JP2007069260 A JP 2007069260A JP 4992495 B2 JP4992495 B2 JP 4992495B2
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image carrier
developer
transport
cleaning
image
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JP2008233240A (en
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智也 市川
茂雄 大野
洋二 山口
将行 河野
有周 田中
美穂子 田中
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Fujifilm Business Innovation Corp
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Fuji Xerox Co Ltd
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Description

本発明は、清掃器前記清掃器を備えた像保持体ユニットおよび画像形成装置に関する。 The present invention relates to a cleaner , an image carrier unit including the cleaner, and an image forming apparatus.

従来の電子写真方式の複写機、プリンタ等の画像形成装置では、感光体等の像保持体表面が帯電器により帯電され、帯電された像保持体表面に静電潜像を形成、現像し、媒体に転写して画像を形成している。転写後の像保持体表面に残留した現像剤は、板状の掻き取り部材、いわゆるクリーニングブレードや、刷毛状の清掃部材、いわゆるクリーニングブラシ等を備えた清掃器、いわゆる、クリーナにより清掃され、回収された現像剤は搬送部材により搬送、廃棄される。
このような清掃器として、下記の特許文献1〜3記載の技術が従来公知である。
In conventional image forming apparatuses such as electrophotographic copying machines and printers, the surface of an image carrier such as a photoreceptor is charged by a charger, and an electrostatic latent image is formed and developed on the charged image carrier surface. An image is formed by transferring to a medium. The developer remaining on the surface of the image carrier after the transfer is cleaned and collected by a cleaning device equipped with a plate-like scraping member, a so-called cleaning blade, a brush-like cleaning member, a so-called cleaning brush, etc., a so-called cleaner. The developed developer is transported and discarded by the transport member.
As such a cleaner, the technologies described in Patent Documents 1 to 3 below are conventionally known.

特許文献1(特開平5−72952号公報)には、像担持体(10)のクリーナ(11)で回収されたトナーを搬送する廃トナー搬送スクリュー(13)において、搬送方向下流側にクリーナ(11)からのトナーに加えて、上流側から搬送された廃トナーが加わって堆積され、廃トナーが廃トナー溜部に搬送されなくなることを防止するために、搬送スクリューの搬送羽根の外径を下流側に行くにつれて大きくしたり、搬送スクリューのピッチを大きくしたり、搬送スクリューを下流側が鉛直方向下方になるように傾斜させることで、搬送方向上流側に比べて下流側の搬送量を増やす技術が記載されている。   Japanese Patent Laid-Open No. 5-72952 discloses a waste toner conveying screw (13) that conveys toner collected by a cleaner (11) of an image carrier (10). 11) In addition to the toner from 11), waste toner conveyed from the upstream side is added and accumulated, and the outer diameter of the conveying blade of the conveying screw is reduced to prevent the waste toner from being conveyed to the waste toner reservoir. Technology that increases the transport amount on the downstream side compared to the upstream side in the transport direction by enlarging it as it goes downstream, increasing the pitch of the transport screw, or tilting the transport screw so that the downstream side is vertically downward. Is described.

特許文献2(米国特許第5101961号明細書)には、清掃器は記載されていないが、回転軸と回転軸の外周に支持された螺旋状の搬送羽根とを有する搬送スクリューにおいて、搬送スクリューの搬送方向下流側に行くにつれて回転軸の軸径を段階的に細くする技術が記載されている。
特許文献3(特開2001−075445号公報)には、クリーニングブレード(29)で掻き取られたトナーを塞き止める塞き止めシート(31)を設け、掻き取られたトナーを塞き止めシート(31)で塞き止めてトナーをクリーニングブレード(29)と感光体(1)との接触領域に供給することで掻き取ったトナーをクリーニングブレード(29)の潤滑に使用する技術が記載されている。
Patent Document 2 (U.S. Pat. No. 5,101,961) does not describe a cleaner, but in a conveying screw having a rotating shaft and a spiral conveying blade supported on the outer periphery of the rotating shaft, A technique is described in which the diameter of the rotary shaft is gradually reduced as it goes downstream in the conveying direction.
Patent Document 3 (Japanese Patent Application Laid-Open No. 2001-074445) provides a blocking sheet (31) that blocks toner scraped off by a cleaning blade (29), and blocks the scraped toner. A technique is described in which the toner scraped off by (31) and supplied to the contact area between the cleaning blade (29) and the photoreceptor (1) is used to lubricate the cleaning blade (29). Yes.

特開平5−72952号公報(「0005」、「0012」〜「0015」、図1〜図3)JP-A-5-72952 ("0005", "0012" to "0015", FIGS. 1 to 3) 米国特許第5101961号明細書(図2、図3)US Pat. No. 5,101,961 (FIGS. 2 and 3) 特開2001−075445号公報(「0026」〜「0028」、「0042」〜「0050」、図5、図10、図13)JP 2001-074445 ("0026" to "0028", "0042" to "0050", FIG. 5, FIG. 10, FIG. 13)

本発明は、前述の事情に鑑み、堰き止め部材の変形による機能低下を防止することを技術的課題とする。   In view of the above-described circumstances, an object of the present invention is to prevent functional degradation due to deformation of a damming member.

前記課題を解決するために請求項1に記載の発明の清掃器は、
トナーを含む現像剤で形成された像を保持する像保持体の表面に接触して前記像保持体表面の現像剤を除去することで前記像保持体表面を清掃する清掃部材と、
前記清掃部材で前記保持体表面から除去された現像剤が収容される清掃容器と、
前記清掃容器内部に配置され且つ、前記清掃容器に収容された現像剤を予め設定された所定の搬送方向に搬送する搬送部材であって、前記搬送方向下流側の搬送能力が前記搬送方向上流側の搬送能力に比べて高い搬送部材と、
前記清掃部材と前記搬送部材との間に配置され重力方向の上端部が前記清掃容器に支持されると共に、重力方向の下端部が、前記清掃容器との間で、除去された現像剤の通過量を規制する間隙を構成する弾性変形可能な部材であって、前記像保持体の軸方向の中央部の重力方向下端に比べて、前記像保持体の軸方向の端部における重力方向の下端が低い位置に配置された弾性変形可能な部材と、
を備えたことを特徴とする。
In order to solve the above-mentioned problem, the cleaning device of the invention according to claim 1,
A cleaning member that cleans the surface of the image carrier by removing the developer on the surface of the image carrier by contacting the surface of the image carrier that holds an image formed with a developer containing toner;
A cleaning container for storing the developer removed from the surface of the image carrier by the cleaning member;
A transport member that is disposed inside the cleaning container and transports the developer contained in the cleaning container in a predetermined transport direction that is set in advance , and the transport capability downstream in the transport direction is upstream in the transport direction High conveying member compared to the conveying capacity of
Is disposed between the conveying member and the cleaning member, with the upper end portion in the gravity direction is supported by the cleaning container, the lower end of the direction of gravity, between the cleaning container, the removed developer An elastically deformable member that constitutes a gap that regulates the amount of passage of the image, and the gravity direction at the axial end of the image carrier compared to the lower end in the gravity direction of the central portion in the axial direction of the image carrier An elastically deformable member disposed at a lower end of the
It is provided with.

前記課題を解決するために請求項2に記載の発明の像保持体ユニットは、
トナーを含む現像剤で形成された像を保持する像保持体と、
前記像保持体の表面に接触して前記像保持体表面の現像剤を除去することで前記像保持体表面を清掃する清掃部材と、
前記清掃部材で前記保持体表面から除去された現像剤が収容される清掃容器と、
前記清掃容器内部に配置され且つ、前記清掃容器に収容された現像剤を予め設定された所定の搬送方向に排出する搬送部材と、
前記像保持体と前記清掃部材との接触部と前記搬送部材との間に配置され、重力方向の上端部が前記清掃容器に支持されると共に、重力方向の下端部が、前記清掃容器との間で、除去された現像剤の通過量を規制する間隙を構成する弾性変形可能な部材であって、前記像保持体の軸方向の中央部における通過領域を前記搬送部材に向けて通過する現像剤量に比べて、前記像保持体の軸方向の端部における前記通過領域を通過する現像剤量が少なく、且つ、前記像保持体の軸方向の中央部の重力方向下端に比べて、前記像保持体の軸方向の端部における重力方向の下端が低い位置に配置された弾性変形可能な部材と、
を備え、
前記搬送部材は、前記搬送方向下流側且つ、少なくとも前記通過領域における通過する現像剤量が少ない部分の搬送能力が前記搬送方向上流側の搬送能力に比べて高い
ことを特徴とする。
In order to solve the above problem, an image carrier unit according to claim 2 is provided.
An image carrier for holding an image formed with a developer containing toner;
A cleaning member that contacts the surface of the image carrier and removes the developer on the surface of the image carrier to clean the surface of the image carrier;
A cleaning container for storing the developer removed from the surface of the image carrier by the cleaning member;
A transport member disposed inside the cleaning container and for discharging the developer stored in the cleaning container in a predetermined transport direction set in advance;
The upper end in the gravitational direction is supported by the cleaning container and the lower end in the gravitational direction is disposed between the contact portion between the image carrier and the cleaning member and the transport member . between, a resiliently deformable member forming a gap to restrict the passage amount of the removed developer, passing through the passing area in the central portion in the axial direction of the image carrier toward said conveying member developing compared to agent amount, the rather small, the amount of developer passing through the passage area at the end portion in the axial direction of the image carrier, and, as compared with the gravity direction lower end of the central portion in the axial direction of the image carrier, An elastically deformable member disposed at a position where the lower end in the gravitational direction at the axial end of the image carrier is low;
With
The transport member has a transport capability downstream of the transport direction and at least a portion with a small amount of developer passing therethrough in the passage region, compared to a transport capability upstream of the transport direction .
It is characterized by that.

前記技術的課題を解決するために、請求項3に記載の発明の像保持体ユニットは、
トナーを含む現像剤で形成された像を保持する像保持体の表面に接触して前記像保持体表面の現像剤を除去することで前記像保持体表面を清掃する清掃部材と、
前記清掃部材で前記保持体表面から除去された現像剤が収容される清掃容器と、
前記清掃容器内部に配置され且つ、前記清掃容器に収容された現像剤を予め設定された所定の搬送方向に搬送する搬送部材と、
前記清掃部材と前記搬送部材との間に配置され、重力方向の下端が前記清掃容器に支持され、前記清掃部材で除去された現像剤が前記搬送部材に向けて通過するための通過領域を構成する開口前記像保持体の軸方向に沿って複数形成されることで除去された現像剤の通過量を規制する弾性変形可能な部材であって、前記像保持体の軸方向の中央部に形成された前記開口の開口面積に比べて前記像保持体の軸方向の端部に形成された前記開口の開口面積が小さい部材と、
を備え、
前記搬送部材は、前記搬送方向下流側且つ、少なくとも前記通過領域における通過する現像剤量が少ない部分の搬送能力が前記搬送方向上流側の搬送能力に比べて高い、
とを特徴とする像保持体ユニット。
In order to solve the technical problem, the image carrier unit of the invention according to claim 3 comprises:
A cleaning member that cleans the surface of the image carrier by removing the developer on the surface of the image carrier by contacting the surface of the image carrier that holds an image formed with a developer containing toner;
A cleaning container for storing the developer removed from the surface of the image carrier by the cleaning member;
A transport member disposed inside the cleaning container and transporting the developer contained in the cleaning container in a predetermined transport direction set in advance;
Located between the cleaning member and the transport member, the lower end in the direction of gravity is supported by the cleaning container, and constitutes a passage region for the developer removed by the cleaning member to pass toward the transport member opening, an elastically deformable member for regulating the passing amount of the developer in the axial direction is eliminated by being formed with a plurality of the image carrier, the central portion in the axial direction of the image carrier to and the image carrier the opening of the opening area is small not part material formed on the end portion in the axial direction as compared to the opening area of the opening formed in,
With
The transport member has a transport capability downstream of the transport direction and at least a portion with a small amount of developer passing therethrough in the passage region, compared to a transport capability upstream of the transport direction.
Image carrier unit, wherein the this.

前記技術的課題を解決するために請求項に記載の発明の画像形成装置は、下記の構成要件(A01)〜(A05)を備えたことを特徴とする。
(A01)回転する像保持体、
(A02)前記像保持体の軸方向の所定の幅に潜像を書き込む潜像書込装置、
(A03)前記像保持体表面の潜像を可視像に現像する現像器、
(A04)前記像保持体表面の可視像を媒体に転写する転写器、
(A05)前記像保持体の表面に接触して、転写後の前記像保持体表面の現像剤を除去することで前記像保持体表面を清掃する清掃部材と、
前記清掃部材で前記保持体表面から除去された現像剤が収容される清掃容器と、
前記清掃容器内部に配置され且つ、前記清掃容器に収容された現像剤を予め設定された所定の搬送方向に排出する搬送部材であって、前記搬送方向下流側の搬送能力が前記搬送方向上流側の搬送能力に比べて高い搬送部材と、
前記像保持体と前記清掃部材との接触部と前記搬送部材との間に配置され重力方向の上端部が前記清掃容器に支持されると共に、重力方向の下端部が、前記清掃容器との間で、除去された現像剤の通過量を規制する間隙を構成する弾性変形可能な部材であって、前記像保持体の軸方向の中央部における通過領域を前記搬送部材に向けて通過する現像剤量に比べて、前記像保持体の軸方向の端部における前記通過領域を通過する現像剤量が少なく、且つ、前記像保持体の軸方向の中央部の重力方向下端に比べて、前記像保持体の軸方向の端部における重力方向の下端が低い位置に配置された弾性変形可能な部材と、
を有する清掃器。
In order to solve the technical problem, an image forming apparatus according to a fourth aspect of the invention includes the following structural requirements (A01) to (A05).
(A01) Rotating image carrier,
(A02) A latent image writing device for writing a latent image in a predetermined width in the axial direction of the image carrier,
(A03) a developing device for developing the latent image on the surface of the image carrier into a visible image;
(A04) a transfer device for transferring a visible image on the surface of the image carrier to a medium;
(A05) a cleaning member that contacts the surface of the image carrier and removes the developer on the surface of the image carrier after transfer to clean the surface of the image carrier;
A cleaning container for storing the developer removed from the surface of the image carrier by the cleaning member;
A conveying member disposed inside the cleaning container and discharging developer stored in the cleaning container in a predetermined conveying direction set in advance , wherein the conveying ability downstream in the conveying direction is upstream in the conveying direction. High conveying member compared to the conveying capacity of
The upper end in the gravitational direction is supported by the cleaning container and the lower end in the gravitational direction is disposed between the contact portion between the image carrier and the cleaning member and the transport member . Development that is an elastically deformable member that forms a gap that regulates the passage amount of the removed developer, and that passes through the passage region in the axial center of the image carrier toward the conveying member. Compared to the amount of developer, the amount of developer passing through the passage region at the axial end of the image carrier is small, and compared to the lower end in the gravity direction of the central portion in the axial direction of the image carrier. An elastically deformable member disposed at a position where the lower end of the gravitational direction is low at the axial end of the image carrier;
Having a cleaner.

請求項1記載の発明によれば、本発明の構成を有しない場合と比べて、堰き止め部材によって堰き止められる現像剤量が増加したときに発生する堰き止め部材の変形を防止することができる。
請求項2及び3記載の発明によれば、本発明の構成を有しない場合と比べて、清掃部材で回収する現像剤量が増加し、堰き止め部材での通過量が少ない部分で現像剤量が増加したときに発生する堰き止め部材の変形を防止することができる。
請求項記載の発明によれば、本発明の構成を有しない場合と比べて、像保持体から回収されて堰き止め部材によって堰き止められる現像剤量が増加したときに発生する堰き止め部材の変形を防止することができる。
According to the first aspect of the present invention, it is possible to prevent deformation of the damming member that occurs when the amount of developer dammed up by the damming member increases compared to the case without the configuration of the present invention. .
According to the second and third aspects of the present invention, the amount of developer recovered by the cleaning member is increased and the amount of developer is reduced at a portion where the passage amount by the damming member is small as compared with the case without the configuration of the present invention. It is possible to prevent the damming member from being deformed when it increases.
According to the fourth aspect of the present invention, the amount of the damming member generated when the amount of developer recovered from the image carrier and dammed by the damming member increases as compared with the case without the configuration of the present invention. Deformation can be prevented.

次に図面を参照しながら、本発明の実施の形態の具体例(実施例)を説明するが、本発明は以下の実施例に限定されるものではない。
なお、以後の説明の理解を容易にするために、図面において、前後方向をX軸方向、左右方向をY軸方向、上下方向をZ軸方向とし、矢印X,−X,Y,−Y,Z,−Zで示す方向または示す側をそれぞれ、前方、後方、右方、左方、上方、下方、または、前側、後側、右側、左側、上側、下側とする。
また、図中、「○」の中に「・」が記載されたものは紙面の裏から表に向かう矢印を意味し、「○」の中に「×」が記載されたものは紙面の表から裏に向かう矢印を意味するものとする。
Next, specific examples (examples) of the embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following examples.
In order to facilitate understanding of the following description, in the drawings, the front-rear direction is the X-axis direction, the left-right direction is the Y-axis direction, the up-down direction is the Z-axis direction, and arrows X, -X, Y, -Y, The direction indicated by Z and -Z or the indicated side is defined as the front side, the rear side, the right side, the left side, the upper side, the lower side, or the front side, the rear side, the right side, the left side, the upper side, and the lower side, respectively.
In the figure, “•” in “○” means an arrow heading from the back of the page to the front, and “×” in “○” is the front of the page. It means an arrow pointing from the back to the back.

図1は本発明の実施例1の画像形成装置の全体説明図で断面図である。
図1において、画像形成装置Uは、上面に透明な原稿台PG、いわゆる、プラテンガラスを有する画像形成装置本体の一例としてのデジタル式の複写機本体U1と、前記プラテンガラスPG上に着脱自在に装着される自動原稿搬送装置U2とを備えている。
前記自動原稿搬送装置U2は、複写しようとする複数の原稿Giが重ねて収容される原稿給紙部TG1を有している。前記原稿給紙部TG1に載置された複数の各原稿Giは順次プラテンガラスPG上の複写位置、すなわち、原稿搬送部材の一例としてのプラテンロールGR1の圧接位置を通過して、原稿排出部材GR2により原稿排紙部TG2に排出されるように構成されている。
FIG. 1 is an overall explanatory view of an image forming apparatus according to Embodiment 1 of the present invention and is a sectional view.
In FIG. 1, an image forming apparatus U is a digital copy machine main body U1 as an example of an image forming apparatus main body having a platen glass PG having a transparent upper surface, that is, a platen glass, and is detachably mounted on the platen glass PG. And an automatic document feeder U2 to be mounted.
The automatic document feeder U2 has a document feeder TG1 in which a plurality of documents Gi to be copied are accommodated. Each of the plurality of documents Gi placed on the document feeder TG1 sequentially passes a copy position on the platen glass PG, that is, a pressure contact position of a platen roll GR1 as an example of a document transport member, and a document discharge member GR2. Thus, the document is discharged to the document discharge unit TG2.

前記複写機本体U1は、前記プラテンガラスPGを有する画像読取装置の一例としてのスキャナ部U1aおよび画像記録装置の一例としてのプリンタ部U1bを有している。
前記スキャナ部U1aは、読取り基準位置に配置された露光系位置検出部材、いわゆる露光系レジセンサSp、および露光光学系Aを有している。
前記露光光学系Aは、その移動および停止が露光系レジセンサSpの検出信号により制御され、常時は読取り基準位置に停止している。
前記自動原稿搬送装置U2を使用して複写を行う自動原稿搬送動作の場合は、前記露光光学系Aは読取り基準位置に停止した状態で、プラテンガラスPG上の複写位置を順次通過する各原稿Giを露光する。
原稿Giを作業者が手でプラテンガラスPG上に置いて複写を行う手動原稿配置動作の場合、露光光学系Aは移動しながらプラテンガラスPG上の原稿Giを露光走査する。
露光された前記原稿Giからの反射光は、前記露光光学系Aを通って固体撮像素子CCD上に収束される。前記固体撮像素子CCDは、その撮像面上に収束された原稿反射光を電気信号に変換する。
The copying machine main body U1 includes a scanner unit U1a as an example of an image reading apparatus having the platen glass PG and a printer unit U1b as an example of an image recording apparatus.
The scanner unit U1a includes an exposure system position detection member, a so-called exposure system registration sensor Sp, and an exposure optical system A, which are arranged at a reading reference position.
The movement and stop of the exposure optical system A is controlled by the detection signal of the exposure system registration sensor Sp, and is always stopped at the reading reference position.
In the case of an automatic document conveying operation in which copying is performed using the automatic document conveying device U2, each document Gi that sequentially passes through the copying position on the platen glass PG while the exposure optical system A is stopped at the reading reference position. To expose.
In the case of a manual document placement operation in which an operator places a document Gi on the platen glass PG by hand, the exposure optical system A exposes and scans the document Gi on the platen glass PG while moving.
The exposed reflected light from the original document Gi passes through the exposure optical system A and is converged on the solid-state image sensor CCD. The solid-state imaging device CCD converts the document reflected light converged on the imaging surface into an electric signal.

画像処理部IPSは、前記固体撮像素子CCDから入力された読取画像信号をデジタルの画像書込信号に変換してプリンタ部U1bの書込駆動信号出力装置DLに出力する。
プリンタ部U1bの制御部Cにより動作タイミングを制御される前記書込駆動信号出力装置DLは、入力された画像データに応じた書込駆動信号を潜像書込装置ROSに出力する。
前記潜像書込装置ROSの下方に配置された被清掃体の一例としての像保持体PRは、矢印Ya方向に回転する。前記像保持体PR表面は、帯電領域Q0において帯電器の一例としての帯電ロールCRにより帯電された後、潜像書込位置Q1において前記潜像書込装置ROSの潜像書込光の一例としてのレーザビームLにより露光走査されて静電潜像が形成される。前記静電潜像が形成された像保持体PR表面は回転移動して現像領域Q2、転写領域Q4を順次通過する。
The image processing unit IPS converts the read image signal input from the solid-state imaging device CCD into a digital image writing signal and outputs the digital image writing signal to the writing drive signal output device DL of the printer unit U1b.
The write drive signal output device DL whose operation timing is controlled by the control unit C of the printer unit U1b outputs a write drive signal corresponding to the input image data to the latent image writing device ROS.
An image carrier PR, which is an example of a member to be cleaned, disposed below the latent image writing device ROS rotates in the direction of the arrow Ya. As an example of the latent image writing light of the latent image writing device ROS at the latent image writing position Q1, the surface of the image carrier PR is charged by a charging roll CR as an example of a charger in the charging region Q0. The laser beam L is exposed and scanned to form an electrostatic latent image. The surface of the image carrier PR on which the electrostatic latent image is formed rotates and moves sequentially through the development area Q2 and the transfer area Q4.

前記現像領域Q2において前記静電潜像を現像する現像器Dは、現像剤を現像ロールR0により現像領域Q2に搬送し、前記現像領域Q2を通過する像保持体PR上の静電潜像を可視像の一例としてのトナー像Tnに現像する。
前記転写領域Q4において前記像保持体PRに対向する転写器の一例としての転写ロールTRは、像保持体PR表面のトナー像Tnを媒体の一例としてのシートSに転写する部材であり、現像器Dで使用される現像用のトナーの帯電極性と逆極性の転写電圧が電源回路Eから供給される。前記帯電ロールCRに印加する帯電電圧、現像ロールR0に印加する現像電圧、転写ロールTRに印加する転写電圧等の印加電圧、後述の定着装置Fの加熱ロールのヒータを加熱するヒータ電源等を有する電源回路Eは前記制御部Cにより制御される。
The developing device D that develops the electrostatic latent image in the developing area Q2 conveys the developer to the developing area Q2 by the developing roll R0, and causes the electrostatic latent image on the image carrier PR that passes through the developing area Q2 to be developed. The toner image Tn as an example of a visible image is developed.
A transfer roll TR, which is an example of a transfer device facing the image carrier PR in the transfer region Q4, is a member that transfers a toner image Tn on the surface of the image carrier PR to a sheet S, which is an example of a medium. A transfer voltage having a polarity opposite to the charging polarity of the developing toner used in D is supplied from the power supply circuit E. A charging voltage applied to the charging roll CR, a developing voltage applied to the developing roll R0, an applied voltage such as a transfer voltage applied to the transfer roll TR, a heater power source for heating a heater of a heating roll of the fixing device F described later, and the like. The power supply circuit E is controlled by the control unit C.

複写機本体U1の下部には、給紙容器の一例としての第1給紙トレイTR1および第2給紙トレイTR2が上下に並んで配置されている。
前記第1給紙トレイTR1および第2給紙トレイTR2の右端部の上端部には用紙取出部材の一例としてのピックアップロールRpが配置されており、前記ピックアップロールRpにより取り出されたシートSは、さばき部材Rsに搬送される。
前記さばき部材Rsは、互いに圧接する給紙部材の一例としてのフィードローラRs1および分離部材の一例としてのリタードロールRs2を有している。前記ニップ部に搬送されたシートは給紙部材Rsにより1枚づつ分離されて、媒体搬送路の一例としてのシート搬送路SH1に搬送される。
シート搬送路SH1には、正逆回転可能な搬送部材の一例としての搬送ロールRbが配置されている。シート搬送路SH1に搬送された前記シートSは正逆転回転可能な搬送ロールRbにより、上方の転写前シート搬送路SH2に搬送される。
A first paper feed tray TR1 and a second paper feed tray TR2 as an example of a paper feed container are arranged vertically below the copier body U1.
A pick-up roll Rp as an example of a sheet take-out member is disposed at the upper end of the right end of the first paper feed tray TR1 and the second paper feed tray TR2, and the sheet S taken out by the pick-up roll Rp is: It is conveyed to the separating member Rs.
The separating member Rs includes a feed roller Rs1 as an example of a sheet feeding member that is pressed against each other and a retard roll Rs2 as an example of a separating member. The sheets conveyed to the nip portion are separated one by one by the sheet feeding member Rs and conveyed to a sheet conveying path SH1 as an example of a medium conveying path.
In the sheet conveyance path SH1, a conveyance roll Rb as an example of a conveyance member that can rotate forward and backward is disposed. The sheet S transported to the sheet transport path SH1 is transported to the upper pre-transfer sheet transport path SH2 by a transport roll Rb that can rotate forward and backward.

転写前シート搬送路SH2に搬送されたシートSは、搬送ロールRaにより転写領域搬送時期調整部材の一例としてのレジロールRrに搬送される。
また、手差し給紙部の一例としての手差し給紙トレイTR0から給紙されたシートSもレジロールRrに搬送される。
前記レジロールRrに搬送されたシートSは、前記像保持体PR上のトナー像Tnが転写領域Q4に移動するのにタイミングを合わせて、転写前媒体案内部材の一例としての転写前シートガイドSG1から転写領域Q4に搬送される。
前記像保持体PR表面に現像されたトナー像Tnは、前記転写領域Q4において、転写ロールTRによりシートSに転写される。転写後、像保持体PR表面は、清掃器の一例としてのクリーナCL1によりクリーニングされて付着物の一例としての残留トナーが除去され、前記帯電ロールCRにより再帯電される。
前記像保持体PR、帯電ロールCR、潜像書込装置ROS、現像器D等によりトナー像形成装置G(PR+CR+ROS+D)が構成されている。
The sheet S conveyed to the pre-transfer sheet conveyance path SH2 is conveyed to a registration roll Rr as an example of a transfer region conveyance timing adjustment member by a conveyance roll Ra.
Further, a sheet S fed from a manual paper feed tray TR0 as an example of a manual paper feed unit is also conveyed to the registration roll Rr.
The sheet S conveyed to the registration roll Rr comes from a pre-transfer sheet guide SG1 as an example of a pre-transfer medium guide member in time with the toner image Tn on the image carrier PR moving to the transfer area Q4. It is conveyed to the transfer area Q4.
The toner image Tn developed on the surface of the image carrier PR is transferred onto the sheet S by the transfer roll TR in the transfer region Q4. After the transfer, the surface of the image carrier PR is cleaned by a cleaner CL1 as an example of a cleaning device to remove residual toner as an example of an adhering matter, and is recharged by the charging roll CR.
The image carrier PR, the charging roll CR, the latent image writing device ROS, the developing device D, and the like constitute a toner image forming device G (PR + CR + ROS + D).

前記転写領域Q4のシート搬送方向下流側には、前記転写領域Q4でトナー像Tnが記録された記録済シートSを定着領域Q5に搬送する転写後シート搬送路SH3が設けられている。前記転写領域Q4において転写ロールTRによりトナー像が転写された前記シートSは、像保持体PR表面から剥離され、前記転写後シート搬送路SH3の転写後媒体案内部材の一例としてのシートガイドSG2により案内され、転写後媒体搬送部材の一例としてのシート搬送ベルトBHにより、定着装置Fに搬送される。
定着装置Fは、内部に熱源としてのヒータを有する加熱定着部材の一例としての加熱ロールFhと、加圧定着部材の一例としての加圧ロールFpとを有する。定着装置Fに搬送されたシートSは、前記加熱ロールFhと加圧ロールFpとの圧接領域により構成される定着領域Q5を通過する際に、トナー像が加熱定着されてから、シート排出路SH4を通って媒体排出部の一例としての排紙トレイTRhに搬送される。
A post-transfer sheet conveyance path SH3 that conveys the recorded sheet S on which the toner image Tn is recorded in the transfer area Q4 to the fixing area Q5 is provided on the downstream side of the transfer area Q4 in the sheet conveyance direction. The sheet S on which the toner image has been transferred by the transfer roll TR in the transfer area Q4 is peeled off from the surface of the image carrier PR, and a sheet guide SG2 as an example of a post-transfer medium guide member in the post-transfer sheet conveyance path SH3. Guided and conveyed to the fixing device F by a sheet conveying belt BH as an example of a post-transfer medium conveying member.
The fixing device F includes a heating roll Fh as an example of a heating fixing member having a heater as a heat source therein, and a pressure roll Fp as an example of a pressure fixing member. When the sheet S conveyed to the fixing device F passes through the fixing region Q5 configured by the pressure contact region between the heating roll Fh and the pressure roll Fp, the toner image is heated and fixed, and then the sheet discharge path SH4. And is conveyed to a paper discharge tray TRh as an example of a medium discharge unit.

前記シート排出路SH4には、前記定着装置Fの下流側に搬送路切替部材の一例としての切替ゲートGT1が配置されている。切替ゲートGT1は、前記定着装置Fを通過したシートSの搬送方向を前記排紙トレイTRh側またはシート反転接続路SH5のいずれかの方向に切り替える。シート反転用接続路SH5は、前記シート排出路SH4の上流端、すなわち、定着装置Fの下流側部分と前記上下方向シート搬送路SH1とを接続する。
両面複写の場合、1面目のトナー像が記録された片面記録済シートSは、前記切替ゲートGT1によりシート反転接続路SH5に搬送され、搬送方向規制部材の一例としてのマイラーゲートGT2を通って、正逆回転搬送ロールRbの逆回転によりシート反転路SH6に搬送される。シート反転路SH6に搬送されたシートSは、正逆回転搬送ロールRbの正回転により、逆方向に搬送、いわゆる、スイッチバックされ、表裏が反転した状態で転写領域Q4に再送される。
前記符号SH1〜SH6により示された要素により媒体搬送路の一例としてのシート搬送路SHが構成されている。
前記シート搬送路SHおよびそこに配置されたシート搬送機能を有するローラRa,Rb,Rr等により媒体搬送装置の一例としてのシート搬送装置USが構成されている。
In the sheet discharge path SH4, a switching gate GT1 as an example of a transport path switching member is disposed on the downstream side of the fixing device F. The switching gate GT1 switches the conveyance direction of the sheet S that has passed through the fixing device F to either the discharge tray TRh side or the sheet reverse connection path SH5. The sheet reversing connection path SH5 connects the upstream end of the sheet discharge path SH4, that is, the downstream portion of the fixing device F and the vertical sheet transport path SH1.
In the case of duplex copying, the one-side recorded sheet S on which the first-side toner image is recorded is conveyed to the sheet reversal connection path SH5 by the switching gate GT1, and passes through a Mylar gate GT2 as an example of a conveyance direction regulating member. The sheet is conveyed to the sheet reversing path SH6 by the reverse rotation of the forward / reverse rotation conveyance roll Rb. The sheet S conveyed to the sheet reversing path SH6 is conveyed in the reverse direction by the normal rotation of the normal / reverse rotation conveyance roll Rb, so-called switchback, and is retransmitted to the transfer region Q4 with the front and back reversed.
A sheet conveyance path SH as an example of a medium conveyance path is configured by the elements indicated by the symbols SH1 to SH6.
A sheet conveying device US as an example of a medium conveying device is configured by the sheet conveying path SH and rollers Ra, Rb, Rr, and the like having a sheet conveying function arranged there.

(清掃器の説明)
図2は本発明の実施例1の清掃器部分の要部拡大図である。
図3は実施例1の清掃器の清掃部材が取り外された状態の斜視説明図である。
図4は図3に示す状態から漏出防止部材が取り外された状態の斜視説明図である。
図5は図3の要部断面図である。
図6は実施例1の清掃器の前側部分の斜視説明図である。
図7は実施例1の清掃器の後側部分の斜視説明図である。
なお、説明をわかりやすくするために、図面において、部材の図示が適宜省略されている。
(Description of cleaner)
FIG. 2 is an enlarged view of a main part of the cleaner part of the first embodiment of the present invention.
FIG. 3 is a perspective explanatory view showing a state where the cleaning member of the cleaner according to the first embodiment is removed.
FIG. 4 is an explanatory perspective view of a state in which the leakage preventing member is removed from the state shown in FIG.
FIG. 5 is a cross-sectional view of the main part of FIG.
FIG. 6 is a perspective explanatory view of a front portion of the cleaner according to the first embodiment.
FIG. 7 is a perspective explanatory view of a rear portion of the cleaning device of the first embodiment.
In addition, in order to make the explanation easy to understand, illustration of members is appropriately omitted in the drawings.

図2〜図7において、本発明の実施例1の清掃器としてのクリーナCL1は、清掃容器の一例としてのハウジング1を有する。前記ハウジング1は、像保持体PR側が開放された開口1aを有し、前記ハウジング1の上端部には、清掃部材支持部1bが形成されている。前記ハウジング1の下部の像保持体PR側には、堰き止め部材取付け部1cが設けられており、開口1aの前後両側には清掃部材固定部1eが形成されている。前記ハウジング1の前後両端部には一対の像保持体支持部1dが形成されている。前記ハウジング1の開口1aの前後両端部および上部には、漏出防止用の密閉部材2、3、4が貼付されている。前記密閉部材2,3,4は、多孔質の弾性体、いわゆる、スポンジで構成することができる。また、図6,図7において、前記像保持体支持部1dには、保護部材、いわゆるカバーU3a、U3bが装着される。   2-7, cleaner CL1 as a cleaner of Example 1 of this invention has the housing 1 as an example of a cleaning container. The housing 1 has an opening 1a that is open on the image carrier PR side, and a cleaning member support 1b is formed at the upper end of the housing 1. A dam member mounting portion 1c is provided on the image carrier PR side of the lower portion of the housing 1, and a cleaning member fixing portion 1e is formed on both front and rear sides of the opening 1a. A pair of image carrier support portions 1 d are formed at both front and rear ends of the housing 1. Sealing members 2, 3, 4 for preventing leakage are affixed to the front and rear ends and the upper part of the opening 1 a of the housing 1. The sealing members 2, 3 and 4 can be formed of a porous elastic body, so-called sponge. 6 and 7, protective members, so-called covers U3a and U3b, are attached to the image carrier support 1d.

前記清掃部材支持部1bには、密閉部材4を挟んで逆L字形の取付け部材6が支持されており、取付け部材6は、清掃部材固定部1eにねじ止めされることで固定される。前記取付け部材6の像保持体PR側表面には、清掃部材の一例としてのクリーニングブレード7が支持されている。前記クリーニングブレード7は、像保持体PR表面に接触して像保持体PR表面に残留した残留トナーを擦り取る。

前記堰き止め部材取付け部1cには、堰き止め部材の一例としての堰き止めフィルム8が支持されている。実施例1の堰き止めフィルム8は、前後方向の幅がハウジング1の開口1aの幅よりも狭く形成された堰き止め部材本体8aと、堰き止め部材本体8aの下端に連続し且つ堰き止め部材本体8aよりも前後方向の幅が長い被取付け部8bとを有する。前記堰き止めフィルム8は、両面テープ9を介して被支持部8bで前記堰き止め部材取付け部1cに固定支持されており、堰き止め部材本体8aの前後両端部は、ハウジング1に固定されていない。
An inverted L-shaped attachment member 6 is supported on the cleaning member support portion 1b with the sealing member 4 interposed therebetween, and the attachment member 6 is fixed by being screwed to the cleaning member fixing portion 1e. A cleaning blade 7 as an example of a cleaning member is supported on the surface of the attachment member 6 on the image carrier PR side. The cleaning blade 7 contacts the surface of the image carrier PR and scrapes off residual toner remaining on the surface of the image carrier PR.

A damming film 8 as an example of a damming member is supported on the damming member mounting portion 1c. The damming film 8 according to the first embodiment includes a damming member main body 8a having a width in the front-rear direction that is narrower than the width of the opening 1a of the housing 1, and a lower end of the damming member main body 8a. And a mounted portion 8b having a longer width in the front-rear direction than 8a. The damming film 8 is fixedly supported on the damming member mounting portion 1c by a supported portion 8b via a double-sided tape 9, and both front and rear ends of the damming member main body 8a are not fixed to the housing 1. .

図8は実施例1のクリーニングブレードと堰き止め部材と搬送部材との関係を説明する説明図である。
図3〜図8前記堰き止め部材本体8aには、図6に示すように通過領域の一例としての前後方向に沿って複数の内部通過領域形成口8cが形成されている。図8において、前記内部通過領域形成口8cは、像保持体PR表面において画像形成動作時に画像が形成されて残留トナーが多く回収されると想定した多回収領域A1に対応して形成された多回収領域用内部通過領域形成口8c1と、残留トナーの回収量が多回収領域A1に比べて少ないと想定した少回収領域A2に対応して形成された少回収領域用内部通過領域形成口8c2とを有する。前記少回収領域用内部通過領域形成口8c2に対して、多回収領域用内部通過領域形成口8c1の位置は、鉛直方向で高く形成されている。なお、実施例1では、多回収領域A1は前後方向中央部に設定されており、少回収領域A2は多回収領域A1の前後両側に設定されている。また、実施例1では、前記多回収領域A1は、画像形成装置Uで使用可能な最大サイズのシートSの前後方向の幅の内側に設定されており、最大サイズシートSの幅A1aは、多回収領域A1の前後方向の幅に比べて広く設定されている。なお、最大サイズのシートSの幅A1aに対応して多回収領域と少回収領域とを設定しているが、一般的に画像形成回数が多いと考えられる、A4横及びA3縦のシート幅に対応して多回収領域と少回収領域とを設定してもよい。
FIG. 8 is an explanatory diagram for explaining the relationship among the cleaning blade, the damming member, and the conveying member according to the first embodiment.
3 to 8 The dam member main body 8a is formed with a plurality of internal passage area forming ports 8c along the front-rear direction as an example of the passage area as shown in FIG. In FIG. 8, the internal passage area forming port 8c is formed in correspondence with a multi-recovery area A1 that assumes that an image is formed on the surface of the image carrier PR during the image forming operation and a large amount of residual toner is recovered. A collection area internal passage area forming port 8c1, and a small collection area internal passage area forming port 8c2 formed corresponding to a small collection area A2 that is assumed to have a smaller amount of residual toner than the multiple collection area A1; Have The position of the internal passage region forming port 8c1 for the multiple recovery region is formed higher in the vertical direction than the internal passage region forming port 8c2 for the small recovery region. In the first embodiment, the multiple recovery area A1 is set at the center in the front-rear direction, and the low recovery area A2 is set on both sides before and after the multiple recovery area A1. In the first embodiment, the multiple collection area A1 is set inside the width in the front-rear direction of the maximum size sheet S that can be used in the image forming apparatus U. The width A1a of the maximum size sheet S It is set wider than the width in the front-rear direction of the collection area A1. Note that the multiple collection area and the small collection area are set corresponding to the width A1a of the maximum size sheet S. However, the sheet widths of A4 horizontal and A3 vertical, which are generally considered to have a large number of image formations, are set. Correspondingly, a multiple recovery area and a low recovery area may be set.

図2〜図8において、前記内部通過領域形成口8cにより形成された空間により、堰き止めフィルム8で堰き止められた残留トナーがハウジング1内部に移動する内部通過領域R1が構成されている。実施例1では、前記内部通過領域R1は、前記多回収領域用内部通過領域形成口8c1により形成される多回収領域用内部通過領域R1aと、少回収領域用内部通過領域形成口8c2により形成される少回収領域用内部通過領域R1bとを有する。
また、図2において、前記堰き止めフィルム8の上端とハウジング1の壁面との間の隙間、すなわち、堰き止めフィルム8により塞がれなかった開口1aの上側部分により第2の内部通過領域R2が構成されている。
2 to 8, an internal passage region R <b> 1 in which the residual toner dammed by the damming film 8 moves into the housing 1 is configured by the space formed by the inner passage region forming port 8 c. In the first embodiment, the internal passage region R1 is formed by the multiple recovery region internal passage region R1a formed by the multiple recovery region internal passage region formation port 8c1 and the small recovery region internal passage region formation port 8c2. And a small collection area internal passage area R1b.
In FIG. 2, the second internal passage region R <b> 2 is formed by the gap between the upper end of the damming film 8 and the wall surface of the housing 1, that is, the upper portion of the opening 1 a that is not blocked by the damming film 8. It is configured.

図2〜図7において、前記堰き止めフィルム8の像保持体PR側には、漏出防止部材11が固定支持されている。前記漏出防止部材11は、下端部が前記堰き止めフィルム8の被取付け部8bの表面に両面テープ12を介して固定されており、像保持体PR表面に弱い押付け力で接触してクリーニングブレード7で擦り落とされて回収された残留トナーが外部に漏出することを防止する。したがって、図2において、前記クリーニングブレード7と、堰き止めフィルム8と、漏出防止部材11と、像保持体PRとにより囲まれた空間により、付着物堰き止め空間の一例としての残留トナー堰き止め空間K1が構成されている。   2 to 7, a leakage preventing member 11 is fixedly supported on the damming film 8 on the image carrier PR side. The leakage prevention member 11 has a lower end fixed to the surface of the attachment portion 8b of the damming film 8 via a double-sided tape 12, and comes into contact with the surface of the image carrier PR with a weak pressing force, thereby cleaning the blade 7 The residual toner that is scraped off and collected is prevented from leaking outside. Therefore, in FIG. 2, a residual toner damming space as an example of an adhering matter damming space by a space surrounded by the cleaning blade 7, the damming film 8, the leakage prevention member 11, and the image carrier PR. K1 is configured.

図2,図8において、前記ハウジング1の内部の搬送空間K2には、内部通過領域R1を通過して搬送空間K2ハウジング1に回収された残留トナーを排出方向Yaに搬送する搬送部材の一例としての搬送オーガ13が配置されている。前記搬送オーガ13は、回転軸13aと、回転軸13aの外周に支持された螺旋状の搬送羽根13bとを有する。なお、実施例1の搬送部材として搬送オーガ13を使用したが、線材を螺旋状に形成したいわゆるコイルオーガを使用することも可能である。
図2において、実施例1の搬送オーガ13では、搬送羽根13bの上端が、内部通過領域形成口8cの下端よりも高い位置に設定されている。
実施例1の搬送オーガ13は、前記多回収領域A1に対応する大径部13a1と、多回収領域A1の排出方向下流側および上流側に設定された前記少回収領域A2に対応する小径部13a2とを有する。すなわち、小径部13a2では搬送羽根13bにより搬送可能な断面積が、大径部13a1の断面積よりも大きくなるため、小径部13a2の部分で回収された残留トナーの搬送量が多くなっている。
2 and 8, the transfer space K2 inside the housing 1 is an example of a transfer member that transfers the residual toner collected in the transfer space K2 housing 1 through the internal passage region R1 in the discharge direction Ya. The transfer auger 13 is arranged. The conveyance auger 13 includes a rotation shaft 13a and a helical conveyance blade 13b supported on the outer periphery of the rotation shaft 13a. In addition, although the conveyance auger 13 was used as a conveyance member of Example 1, it is also possible to use what is called a coil auger which formed the wire in the shape of a spiral.
In FIG. 2, in the conveyance auger 13 of Example 1, the upper end of the conveyance blade 13b is set to a position higher than the lower end of the internal passage region forming port 8c.
The transport auger 13 according to the first embodiment includes a large-diameter portion 13a1 corresponding to the multiple recovery region A1, and a small-diameter portion 13a2 corresponding to the small recovery region A2 set downstream and upstream in the discharge direction of the multiple recovery region A1. And have. That is, in the small diameter portion 13a2, the cross-sectional area that can be conveyed by the conveying blade 13b is larger than the cross-sectional area of the large diameter portion 13a1, so that the amount of residual toner collected in the small diameter portion 13a2 is increased.

(実施例1の作用)
前記構成を備えた本発明の実施例1の画像形成装置Uの清掃器CL1では、クリーニングブレード7で像保持体PRから擦り取られた現像剤は、搬送オーガ13によって搬送されず、堰き止めフィルム8により堰き止められる。堰き止められた現像剤は、残留トナー堰き止め空間K1に蓄積される。残留トナー堰き止め空間K1の残留トナーは、フィルム状の堰き止めフィルム8の弾性復元力によりクリーニングブレード7と像保持体PRとの接触部側に向かう力を受け、クリーニングブレード7と像保持体PRとの接触部に供給される。このため、蓄積された現像剤、主として、現像剤に外添された外添剤は、像保持体PRとクリーニングブレード7との接触部に供給されて潤滑がされ、クリーニングブレード7のめくれや微小振動が防止される。
(Operation of Example 1)
In the cleaner CL1 of the image forming apparatus U according to the first exemplary embodiment of the present invention having the above-described configuration, the developer scraped off from the image holding member PR by the cleaning blade 7 is not transported by the transport auger 13, and is a blocking film. 8 is dammed up. The damped developer is accumulated in the residual toner dam space K1. The residual toner in the residual toner damming space K1 receives a force toward the contact portion between the cleaning blade 7 and the image carrier PR by the elastic restoring force of the film-like damming film 8, and the cleaning blade 7 and the image carrier PR. Is supplied to the contact portion. Therefore, the accumulated developer, mainly the external additive externally added to the developer, is supplied to the contact portion between the image carrier PR and the cleaning blade 7 to be lubricated, and the cleaning blade 7 is turned over or minutely. Vibration is prevented.

このとき、残留トナー堰き止め空間K1において、前後方向、すなわち、像保持体PRの軸方向に対して、多回収領域A1と少回収領域A2では回収される現像剤量が異なり、蓄積される速さが異なる。このとき、実施例1では、堰き止めフィルム8と漏出防止部材13との間が近接しているため、最初は、小回収領域用内部通過領域形成口8c2では漏出防止部材13によりほとんど塞がれる形で、現像剤が小回収領域用内部通過領域R1bを通過せず、蓄積されやすい。そして、ある程度現像剤が蓄積されて、蓄積された現像剤により押されて、堰き止めフィルム8と漏出防止部材13との間が広がると、小回収領域用内部通過領域R1bを通過して、搬送空間K2に流入する。一方で、多回収領域用内部通過領域形成口8c1は、その一部が、漏出防止部材13の上端縁よりも上方にあるため、クリーニングブレード7で除去された現像剤は、最初でも、一部が多回収領域用内部通過領域R1aを通過して搬送空間K2に流入し、残りの一部が残留トナー堰き止め空間K1にせき止められる。
また、実施例1では、多回収領域用内部通過領域形成口8c1の高さが高くなっているので、残留トナーが多い多回収領域A1で回収された残留トナーは、残留トナーの回収量が少ない少回収領域A2側に流れ込むようにして移動し、クリーニングブレード7の前後方向全域に効率的に潤滑剤としての現像剤が供給される。
At this time, in the residual toner damming space K1, the amount of developer collected is different in the large collection area A1 and the small collection area A2 with respect to the front-rear direction, that is, the axial direction of the image carrier PR, and the accumulated speed is high. Is different. At this time, in Example 1, since the damming film 8 and the leakage preventing member 13 are close to each other, at first, the leakage preventing member 13 is almost closed at the small collection region internal passage region forming port 8c2. In this form, the developer does not pass through the small collection area internal passage area R1b and is easily accumulated. Then, when the developer is accumulated to some extent and is pushed by the accumulated developer and the space between the damming film 8 and the leakage preventing member 13 is widened, the developer passes through the small collection area internal passage area R1b and is conveyed. It flows into the space K2. On the other hand, since a part of the internal passage area forming port 8c1 for the multiple recovery area is located above the upper end edge of the leakage preventing member 13, the developer removed by the cleaning blade 7 is partially even at the beginning. Passes through the internal passage area R1a for the multiple recovery area and flows into the conveyance space K2, and the remaining part is blocked by the residual toner blocking space K1.
Further, in the first embodiment, since the height of the multi-recovery area internal passage area forming port 8c1 is high, the residual toner collected in the multi-recovery area A1 having a large amount of residual toner has a small residual toner collection amount. The developer as a lubricant is efficiently supplied to the entire area of the cleaning blade 7 in the front-rear direction.

前記トナー堰き止め空間K1に蓄積された残留トナーの量が多くなり、高さが内部通過領域形成口8cの高さを超えると内部通過領域R1を通じて、ハウジング1内部の搬送空間K2に流入し、排出、廃棄される。また、いわゆる、べた画像のような高濃度画像が連続して形成される等して、残留トナーの回収量が内部通過領域R1を通じて移動する量に比べて多くなった場合には、回収トナーが堰き止めフィルム8の上端を越えて、すなわち、第2の内部通過領域R2を通じてトナー堰き止め空間K1から搬送空間K2側に流入可能に構成されている。
前記ハウジング1の内部の搬送空間K2に搬送された残留トナーは、搬送オーガ13により上流側から下流側に搬送される。このとき、下流側では、トナー堰き止め空間K1から流入してくる残留トナーに加えて、上流側から搬送された残留トナーがあるため、搬送空間K2内のトナー量は下流側ほど多くなりやすい。
When the amount of residual toner accumulated in the toner blocking space K1 increases and the height exceeds the height of the internal passage region forming port 8c, it flows into the conveyance space K2 inside the housing 1 through the internal passage region R1, Discharged and discarded. In addition, when the amount of residual toner collected is larger than the amount of residual toner moving through the internal passage region R1, due to the continuous formation of high density images such as so-called solid images, It is configured to be able to flow over the upper end of the damming film 8, that is, from the toner damming space K1 to the conveying space K2 side through the second internal passage region R2.
The residual toner transported to the transport space K2 inside the housing 1 is transported from the upstream side to the downstream side by the transport auger 13. At this time, on the downstream side, in addition to the residual toner flowing in from the toner damming space K1, there is residual toner conveyed from the upstream side, so the amount of toner in the conveyance space K2 tends to increase as the downstream side.

図9は作用説明図であり、図9Aは従来の堰き止め部材を備えた清掃器でせき止めが開始された状態の説明図、図9Bは図9Aから内部の現像剤の排出方向下流側で現像剤が増加した状態の説明図、図9Cは図9Bの状態からトナー堰き止め空間の回収トナーが過剰になり堰き止め部材が折れ曲がった状態の説明図である。
図9において、従来のように堰き止め部材01を設けた清掃器02では、搬送部材03は軸方向に沿って同じ搬送量のものしか使用されていなかったため、搬送部材03の搬送方向中流〜下流側で現像剤が多くなっていた。図9Bに示すように、中流〜下流側の現像剤多くなると、内部通過領域04が塞がれてしまい、内部通過領域04から内部に現像剤が移動できなくなり、乗り越える形でしか流入できなくなる。トナー堰き止め空間06から残留トナーが内部通過領域04を通過して搬送部材03に移動せず且つクリーニングブレード07により回収された残留トナーが蓄積され続けると、トナー堰き止め空間06内部の圧力が過剰になり、図9Cに示すように堰き止め部材01が塑性変形して倒れてしまったり、クリーニングブレード07でのクリーニング不良やトナーの漏れ出し等が発生することがあった。
FIG. 9 is an explanatory diagram of the operation, FIG. 9A is an explanatory diagram of a state in which clogging is started by a conventional cleaner equipped with a damming member, and FIG. FIG. 9C is an explanatory diagram of a state where the amount of toner collected in the toner damming space becomes excessive and the damming member is bent from the state of FIG. 9B.
In FIG. 9, in the cleaning device 02 provided with the damming member 01 as in the prior art, only the same conveying amount is used as the conveying member 03 along the axial direction. There was more developer on the side. As shown in FIG. 9B, when the amount of developer in the middle stream to the downstream side increases, the internal passage area 04 is blocked, and the developer cannot move from the internal passage area 04 to the inside, and can only flow in the form of getting over. If the residual toner does not move from the toner dam space 06 through the internal passage area 04 to the transport member 03 and the residual toner collected by the cleaning blade 07 continues to accumulate, the pressure inside the toner dam space 06 becomes excessive. Thus, as shown in FIG. 9C, the damming member 01 may be plastically deformed and fall down, or the cleaning blade 07 may be poorly cleaned or toner may leak out.

これに対して、実施例1の清掃器CL1では、搬送オーガ13の回転軸13aの下流側に小径部13a2が形成され、単位時間当りの搬送量、すなわち、搬送能力が高くなっており、上流側の大径部13a1での搬送量よりも多くの残留トナーが搬送される。すなわち、上流側から搬送されてくるトナー量よりも多くのトナーが搬送可能な構成であるため、内部通過領域R1bを通じて流入する現像剤も搬送される。
また、実施例1の清掃器CL1では、搬送オーガ13の搬送羽根13bの上端が、内部通過領域形成口8cの下端よりも高い位置に設定されており、搬送部材13により搬送される現像剤が増加した場合には、内部通過領域R1が塞がれやすくなるが、下流側で搬送能力が高く速やかに搬送され、塞がれることが低減される。
On the other hand, in the cleaning device CL1 of the first embodiment, the small diameter portion 13a2 is formed on the downstream side of the rotation shaft 13a of the transport auger 13, and the transport amount per unit time, that is, the transport capability is increased. More residual toner is conveyed than the conveyance amount in the large-diameter portion 13a1 on the side. That is, since the toner can be transported more than the amount of toner transported from the upstream side, the developer flowing in through the internal passage region R1b is transported.
Further, in the cleaner CL1 of the first embodiment, the upper end of the transport blade 13b of the transport auger 13 is set to a position higher than the lower end of the internal passage region forming port 8c, and the developer transported by the transport member 13 is When the number increases, the internal passage region R1 is likely to be blocked, but the conveyance capability is high on the downstream side and the sheet is quickly transported to reduce the blockage.

図10は本発明の実施例2の清掃器の説明図であり、実施例1の図8に対応する図である。
次に、本発明の実施例2の説明をするが、この実施例2の説明において、前記実施例1の構成要素に対応する構成要素には同一の符号を付して、その詳細な説明を省略する。
この実施例2は、下記の点で前記実施例1と相違しているが、他の点では前記実施例1と同様に構成されている。
図10において、実施例2の清掃器CL1では、内部通過領域形成口8c′は、搬送オーガ13の大径部13a1に対応して形成された多回収領域用内部通過領域形成口8c1′と、搬送オーガ13の小径部13a2に対応して形成された少回収領域用内部通過領域形成口8c2′とを有し、多回収領域用内部通過領域形成口8c1′の開口面積は、少回収領域用内部通過領域形成口8c2′の開口面積よりも大きく形成されている。
FIG. 10 is an explanatory diagram of the cleaning device according to the second embodiment of the present invention, and corresponds to FIG. 8 of the first embodiment.
Next, the second embodiment of the present invention will be described. In the description of the second embodiment, the same reference numerals are given to the components corresponding to the components of the first embodiment, and the detailed description thereof will be given. Omitted.
The second embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.
In FIG. 10, in the cleaning device CL <b> 1 of the second embodiment, the internal passage region forming port 8 c ′ includes an internal passage region forming port 8 c <b> 1 ′ for the multiple recovery region formed corresponding to the large diameter portion 13 a 1 of the transport auger 13, A small recovery area internal passage area forming port 8c2 'formed corresponding to the small diameter portion 13a2 of the transfer auger 13, and the opening area of the multiple recovery area internal passage area forming port 8c1' is small recovery area It is formed larger than the opening area of the internal passage region forming port 8c2 '.

(実施例2の作用)
前記構成を備えた実施例2の清掃器CL1では、開口面積が小さい少回収領域用内部通過領域形成口8c2′の内側の搬送オーガ13の搬送力が大きく、速やかに下流側に搬送される。すなわち、堰き止めフィルム8の内側の搬送空間K2のトナー量が多くなり、少回収領域用内部通過領域R1bが塞がれることが低減され、少回収領域用内部通過領域R1bを通じて残留トナーが搬送空間K2に流入し、排出される。また、多回収領域用内部通過領域形成口8c1′の開口面積が大きく、塞がれにくいため、多回収領域A1で回収された残留トナーは、多回収領域用内部通過領域R1aを通じて残留トナーが搬送空間K2に流入し、排出される。
(Operation of Example 2)
In the cleaning device CL1 of Example 2 having the above-described configuration, the conveyance force of the conveyance auger 13 inside the small collection area internal passage area forming port 8c2 ′ having a small opening area is large, and is quickly conveyed downstream. That is, the amount of toner in the conveyance space K2 inside the damming film 8 is increased, and the small collection area internal passage area R1b is prevented from being blocked, and residual toner is conveyed through the small collection area internal passage area R1b. It flows into K2 and is discharged. Further, since the opening area of the internal passage area forming port 8c1 ′ for the multiple recovery area is large and is not easily blocked, the residual toner recovered in the multiple recovery area A1 is conveyed through the internal passage area R1a for the multiple recovery area. It flows into the space K2 and is discharged.

図11は本発明の実施例3の清掃器の説明図であり、実施例1の図8に対応する図である。
次に、本発明の実施例3の説明をするが、この実施例3の説明において、前記実施例1の構成要素に対応する構成要素には同一の符号を付して、その詳細な説明を省略する。
この実施例3は、下記の点で前記実施例1と相違しているが、他の点では前記実施例1と同様に構成されている。
図11において、実施例3の清掃器CL1では、搬送オーガ13の回転軸13a′において、小径部13a2が排出方向下流側の少回収領域A2aに対応する部分にのみ形成され、排出方向上流側の少回収領域A2bに対応する部分は、大径部13a1となっている。
FIG. 11 is an explanatory diagram of the cleaning device according to the third embodiment of the present invention, and corresponds to FIG. 8 according to the first embodiment.
Next, the third embodiment of the present invention will be described. In the description of the third embodiment, the same reference numerals are given to the components corresponding to the components of the first embodiment, and the detailed description thereof will be given. Omitted.
The third embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.
In FIG. 11, in the cleaner CL1 of the third embodiment, the small diameter portion 13a2 is formed only in the portion corresponding to the small recovery area A2a on the downstream side in the discharge direction on the rotation shaft 13a ′ of the transport auger 13, and A portion corresponding to the small recovery region A2b is a large diameter portion 13a1.

(実施例3の作用)
前記構成を備えた実施例3の清掃器CL1では、搬送オーガ13は、残留トナーの総量が最も多くなる排出方向下流側の部分の搬送能力が高く、上流側から残留トナーが搬送されてこない最上流側は、搬送能力を高める必要がないため高めていない。したがって、搬送空間K2の排出方向下流側の残留トナーが効率的に搬送、排出される。
(Operation of Example 3)
In the cleaning device CL1 of Example 3 having the above-described configuration, the conveyance auger 13 has a high conveyance capability in the downstream portion in the discharge direction where the total amount of residual toner is the largest, and the most residual toner is not conveyed from the upstream side. The upstream side is not increased because there is no need to increase the conveying capacity. Therefore, the residual toner on the downstream side in the discharge direction of the transfer space K2 is efficiently transferred and discharged.

図12は本発明の実施例4の清掃器の説明図であり、実施例1の図8に対応する図である。
次に、本発明の実施例4の説明をするが、この実施例4の説明において、前記実施例1の構成要素に対応する構成要素には同一の符号を付して、その詳細な説明を省略する。
この実施例4は、下記の点で前記実施例1と相違しているが、他の点では前記実施例1と同様に構成されている。
図12において、実施例4の清掃器CL1では、搬送オーガ13の搬送羽根13b′において、排出方向下流側の少回収領域A2aに対応する下流側搬送羽根13b1′の搬送羽根どうしの間隔、いわゆるピッチが、排出方向上流側の多回収領域および少回収領域A2bに対応する上流側搬送羽根13b2′のピッチに比べて大きく設定されている。すなわち、回転軸13aが一回転した時の搬送距離が下流側搬送羽根13b1′の方が長く、搬送能力が高く設定されている。
FIG. 12 is an explanatory diagram of the cleaning device according to the fourth embodiment of the present invention, and corresponds to FIG. 8 of the first embodiment.
Next, a description will be given of a fourth embodiment of the present invention. In the description of the fourth embodiment, the same reference numerals are given to the components corresponding to the components of the first embodiment, and a detailed description thereof will be given. Omitted.
The fourth embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.
12, in the cleaning device CL1 of the fourth embodiment, in the conveyance blade 13b ′ of the conveyance auger 13, the interval between the conveyance blades of the downstream conveyance blade 13b1 ′ corresponding to the small recovery area A2a on the downstream side in the discharge direction, so-called pitch. However, the pitch is set larger than the pitch of the upstream conveying blades 13b2 'corresponding to the multiple recovery region upstream of the discharge direction and the small recovery region A2b. That is, the conveyance distance when the rotation shaft 13a makes one rotation is longer in the downstream conveyance blade 13b1 ', and the conveyance capacity is set high.

(実施例4の作用)
前記構成を備えた実施例4の清掃器CL1では、搬送オーガ13は、残留トナーの総量が最も多くなる排出方向下流側の部分の搬送能力が高く、搬送空間K2の排出方向下流側の残留トナーが効率的に搬送、排出される。
(Operation of Example 4)
In the cleaning device CL1 of Example 4 having the above-described configuration, the conveyance auger 13 has a high conveyance capability in the downstream portion in the discharge direction where the total amount of residual toner is the largest, and the residual toner in the discharge direction downstream side of the conveyance space K2. Is efficiently transported and discharged.

図13は本発明の実施例5の像保持体PRおよび清掃器の要部説明図であり、実施例1の図2に対応する図である。
図14は実施例5の清掃器の説明図であり、実施例1の図8に対応する図である。
次に、本発明の実施例5の説明をするが、この実施例5の説明において、前記実施例1の構成要素に対応する構成要素には同一の符号を付して、その詳細な説明を省略する。
この実施例5は、下記の点で前記実施例1と相違しているが、他の点では前記実施例1と同様に構成されている。
FIG. 13 is an explanatory diagram of a main part of the image carrier PR and the cleaner according to the fifth embodiment of the present invention, and corresponds to FIG. 2 of the first embodiment.
FIG. 14 is an explanatory diagram of the cleaning device of the fifth embodiment, and corresponds to FIG. 8 of the first embodiment.
Next, the fifth embodiment of the present invention will be described. In the description of the fifth embodiment, the same reference numerals are given to the components corresponding to the components of the first embodiment, and the detailed description thereof will be given. Omitted.
The fifth embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.

図13、図14において、実施例5の清掃器CL1′では、実施例1の堰き止め部材取付け部1cに替えて、漏出防止部材取付け部1c′が形成されており、漏出防止部材取付け部1c′には漏出防止部材11が固定支持されている。
前記清掃部材支持部1bの下方には、堰き止め部材取付け部1fが形成されており、堰き止め部材取付け部1fには堰き止めフィルム21が固定支持されている。前記堰き止めフィルム21は、前記堰き止め部材取付け部1fに取付けられる上端の被固定部21aと、下方に延びる堰き止め部材本体21bとを有する。なお、実施例5の堰き止めフィルム21も、実施例1の堰き止めフィルム8と同様に、前後両端縁がハウジング1に支持されていない。
13 and 14, in the cleaner CL1 ′ of the fifth embodiment, a leakage preventing member mounting portion 1c ′ is formed instead of the damming member mounting portion 1c of the first embodiment, and the leakage preventing member mounting portion 1c. A leakage prevention member 11 is fixedly supported on '.
A dam member attaching portion 1f is formed below the cleaning member support portion 1b, and a damming film 21 is fixedly supported on the dam member attaching portion 1f. The damming film 21 has a fixed portion 21a at the upper end attached to the damming member attachment portion 1f and a damming member main body 21b extending downward. Note that the damming film 21 of Example 5 is not supported by the housing 1 at both front and rear edges, similarly to the damming film 8 of Example 1.

図14において、前記堰き止め部材本体21bは、多回収領域A1に対応する多回収領域部21b1が、少回収領域A2に対応する少回収領域部21b2とを有し、堰き止めフィルム21の下端は漏出防止部材取付け部1c′の上面1c1′に接触しない長さに設定されている。また、実施例5では、前記多回収領域部21b1の鉛直方向の長さ、すなわち、自由長が、少回収領域部21b2の自由長よりも短く形成されている。
したがって、前記堰き止めフィルム21の下端と、漏出防止部材取付け部1c′の上面1c1′との間の隙間により、残留トナー堰き止め空間K1から内部の搬送空間K2に残留トナーを移動させる内部通過領域R1′が構成されている。前記内部通過領域R1′は、多回収領域部21b1と上面1c1′との間の隙間により構成された多回収領域用内部通過領域R1a′と、少回収領域部21b2と上面1c1′との間の隙間により構成された少回収領域用内部通過領域R1b′とを有する。図14に示すように、前記多回収領域用内部通過領域R1a′は、少回収領域用内部通過領域R1b′に比べて、鉛直方向の幅が広く設定されている。
なお、実施例5では、搬送オーガ13は、実施例1、2の場合と同様に、多回収領域A1に対応する大径部13a1と、少回収領域A2に対応する小径部13a2とを有する。
In FIG. 14, the dam member main body 21b has a multiple recovery region portion 21b1 corresponding to the multiple recovery region A1 and a small recovery region portion 21b2 corresponding to the small recovery region A2, and the lower end of the damming film 21 is The length is set so as not to contact the upper surface 1c1 'of the leakage preventing member mounting portion 1c'. In Example 5, the length in the vertical direction of the multiple recovery region portion 21b1, that is, the free length, is shorter than the free length of the small recovery region portion 21b2.
Accordingly, an internal passage region in which the residual toner is moved from the residual toner damming space K1 to the internal conveyance space K2 by a gap between the lower end of the damming film 21 and the upper surface 1c1 'of the leakage prevention member mounting portion 1c'. R1 'is configured. The internal passage region R1 ′ includes a multiple recovery region internal passage region R1a ′ formed by a gap between the multiple recovery region portion 21b1 and the upper surface 1c1 ′, and a small recovery region portion 21b2 and the upper surface 1c1 ′. And a small recovery area internal passage area R1b ′ constituted by a gap. As shown in FIG. 14, the internal passage region R1a ′ for the multiple recovery region is set wider in the vertical direction than the internal passage region R1b ′ for the small recovery region.
In the fifth embodiment, the transfer auger 13 includes a large diameter portion 13a1 corresponding to the multiple recovery region A1 and a small diameter portion 13a2 corresponding to the small recovery region A2, as in the first and second embodiments.

(実施例5の作用)
前記構成を備えた実施例5の清掃器CL1′では、回収量が多い多回収領域A1では多回収領域用内部通過領域R1a′が大きく、多くの過剰な現像剤が内部の搬送空間K2に流入する。また、搬送オーガ13は、実施例1、2と同様に、排出方向下流側で搬送能力が高いため、下流側の回収トナーは速やかに搬送され、少回収領域用内部通過領域R1b′が塞がれることが低減される。
(Operation of Example 5)
In the cleaner CL1 ′ of Example 5 having the above-described configuration, the multiple recovery area A1 having a large recovery amount has a large internal recovery area R1a ′ for the multiple recovery area, and a large amount of excess developer flows into the internal conveyance space K2. To do. Similarly to the first and second embodiments, the transport auger 13 has a high transport capability on the downstream side in the discharge direction, and therefore, the collected toner on the downstream side is quickly transported, and the internal passage area R1b ′ for the small recovery area is blocked. Is reduced.

図15は本発明の実施例6の清掃器の説明図であり、実施例5の図14に対応する図である。
次に、本発明の実施例6の説明をするが、この実施例6の説明において、前記実施例1〜5の構成要素に対応する構成要素には同一の符号を付して、その詳細な説明を省略する。
この実施例6は、下記の点で前記実施例1〜5と相違しているが、他の点では前記実施例1〜5と同様に構成されている。
図15において、実施例6の清掃器CL1′では、実施例5の搬送オーガ13に替えて、実施例3の搬送オーガ13を使用している。
FIG. 15 is an explanatory diagram of a cleaner according to a sixth embodiment of the present invention, and corresponds to FIG. 14 according to the fifth embodiment.
Next, the sixth embodiment of the present invention will be described. In the description of the sixth embodiment, the same reference numerals are given to the components corresponding to the components of the first to fifth embodiments, and the detailed description thereof will be made. Description is omitted.
Example 6 is different from Examples 1 to 5 in the following points, but is configured in the same manner as Examples 1 to 5 in other points.
In FIG. 15, the cleaner CL <b> 1 ′ of the sixth embodiment uses the transport auger 13 of the third embodiment instead of the transport auger 13 of the fifth embodiment.

(実施例6の作用)
前記構成を備えた実施例6の清掃器CL1′は、搬送オーガ13により、搬送空間K2内でのトナー量が多くなる排出方向下流側のトナーが効率的に排出される。
(Operation of Example 6)
In the cleaner CL1 ′ of Example 6 having the above-described configuration, the toner on the downstream side in the discharge direction in which the toner amount in the transfer space K2 increases is efficiently discharged by the transfer auger 13.

図16は本発明の実施例7の清掃器の説明図であり、実施例5の図14に対応する図である。
次に、本発明の実施例7の説明をするが、この実施例7の説明において、前記実施例1〜6の構成要素に対応する構成要素には同一の符号を付して、その詳細な説明を省略する。
この実施例7は、下記の点で前記実施例1〜6と相違しているが、他の点では前記実施例1〜6と同様に構成されている。
図16において、実施例7の画像形成装置Uでは、像保持体PRに画像形成動作時に画像が形成される領域が、中央部ではなく、後端を基準として画像が形成されるように設定されている。これに応じて、実施例7の清掃器CL1′は、多回収領域A1が後端側のみに設定され、少回収領域A2が前端側のみに設定されている。したがって、前記堰き止め部材本体21bの多回収領域部21b1および少回収領域部21b2と、搬送オーガ13の大径部13a1および小径部13a2の位置が、多回収領域A1および少回収領域A2に対応する位置に設定されている。
FIG. 16 is an explanatory diagram of the cleaning device according to the seventh embodiment of the present invention and corresponds to FIG. 14 according to the fifth embodiment.
Next, a seventh embodiment of the present invention will be described. In the description of the seventh embodiment, the same reference numerals are given to the components corresponding to the components of the first to sixth embodiments, and the details thereof will be described. Description is omitted.
Example 7 is different from Examples 1 to 6 in the following points, but is configured in the same manner as Examples 1 to 6 in other points.
In FIG. 16, in the image forming apparatus U according to the seventh embodiment, an area in which an image is formed on the image carrier PR during the image forming operation is set so that an image is formed with reference to the rear end instead of the center. ing. Accordingly, in the cleaner CL1 ′ according to the seventh embodiment, the multiple recovery area A1 is set only on the rear end side, and the small recovery area A2 is set only on the front end side. Accordingly, the positions of the multiple recovery region portion 21b1 and the small recovery region portion 21b2 of the damming member main body 21b and the large diameter portion 13a1 and the small diameter portion 13a2 of the transport auger 13 correspond to the multiple recovery region A1 and the small recovery region A2. Set to position.

(実施例7の作用)
前記構成を備えた実施例7の清掃器CL1′では、画像が形成される領域の変動に伴い適切な位置に内部通過領域R1′が設定され、クリーニングブレード7が潤滑されると共に、堰き止めフィルム21の破損が効率的に防止される。
(Operation of Example 7)
In the cleaning device CL1 ′ of Example 7 having the above-described configuration, the internal passage region R1 ′ is set at an appropriate position in accordance with the variation of the region where the image is formed, the cleaning blade 7 is lubricated, and the damming film 21 is effectively prevented from being damaged.

図17は本発明の実施例8の清掃器の説明図であり、実施例5の図14に対応する図である。
次に、本発明の実施例8の説明をするが、この実施例8の説明において、前記実施例1〜7の構成要素に対応する構成要素には同一の符号を付して、その詳細な説明を省略する。
この実施例8は、下記の点で前記実施例1〜7と相違しているが、他の点では前記実施例1〜7と同様に構成されている。
FIG. 17 is an explanatory diagram of a cleaner according to an eighth embodiment of the present invention, and corresponds to FIG. 14 according to the fifth embodiment.
Next, an eighth embodiment of the present invention will be described. In the description of the eighth embodiment, the same reference numerals are given to the components corresponding to the components of the first to seventh embodiments, and the details thereof will be described. Description is omitted.
Example 8 is different from Examples 1 to 7 in the following points, but is configured in the same manner as Examples 1 to 7 in other points.

図17において、実施例8の清掃器CL1′では、搬送オーガ13の搬送羽根13b″が、下流側の少回収領域A2Aに対応する下流側搬送羽根13b1″の外径が、上流側搬送羽根13b2″の外径よりも大きく形成されている。これに伴い、ハウジング1の搬送空間K2の底壁も、下流側の少回収領域A2Aに対応する下流側底壁1gは、上流側底壁1hに比べて深さが深く形成されている。したがって、下流側搬送羽根13b1″により、搬送オーガ13は下流側の搬送能力が上流側に比べて高く設定されている。   In FIG. 17, in the cleaner CL1 ′ of the eighth embodiment, the conveyance blade 13b ″ of the conveyance auger 13 has an outer diameter of the downstream conveyance blade 13b1 ″ corresponding to the downstream small collection area A2A, and the upstream conveyance blade 13b2. Accordingly, the bottom wall of the conveyance space K2 of the housing 1 also has a downstream bottom wall 1g corresponding to the small collection area A2A on the downstream side in the upstream bottom wall 1h. The downstream auger 13b1 ″ sets the downstream auger 13 so that the downstream conveyance capacity is higher than that of the upstream side.

(実施例8の作用)
前記構成を備えた実施例8の清掃器CL1′では、搬送能力が大きな下流側搬送羽根13b1″により、搬送空間K2の下流側の回収トナーが速やかに搬送され、清掃器CL1′から排出される。
(Operation of Example 8)
In the cleaner CL1 ′ according to the eighth embodiment having the above-described configuration, the collected toner on the downstream side of the transport space K2 is quickly transported by the downstream transport blade 13b1 ″ having a large transport capability and is discharged from the cleaner CL1 ′. .

(変更例)
以上、本発明の実施例を詳述したが、本発明は、前記実施例に限定されるものではなく、特許請求の範囲に記載された本発明の要旨の範囲内で、種々の変更を行うことが可能である。本発明の変更例(H01)〜(H010)を下記に例示する。
(H01)前記実施例において、画像形成装置の一例としての複写機に限定されず、プリンタ、FAX等の画像形成装置にも適用可能である。また、単色、いわゆる、モノクロの画像形成装置に限定されず、多色、いわゆる、カラーの画像形成装置にも適用可能である。
(Example of change)
As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is performed within the range of the summary of this invention described in the claim. It is possible. Modification examples (H01) to (H010) of the present invention are exemplified below.
(H01) In the above-described embodiment, the present invention is not limited to a copying machine as an example of an image forming apparatus, and can be applied to an image forming apparatus such as a printer or a FAX. Further, the image forming apparatus is not limited to a single color, so-called monochrome image forming apparatus, and can be applied to a multicolor, so-called color image forming apparatus.

(H02)前記実施例において、清掃器として被清掃体が像保持体PR表面の清掃を行う清掃器を例示したが、これに限定されず、転写ロールTRの清掃器や帯電ロールCRの清掃器にも適用可能である。このほかにも、カラーの画像形成装置において、ベルト状やドラム状の中間転写体の清掃を行う清掃器にも適用可能である。
(H03)前記実施例において、内部通過領域の位置および大きさは、実施例に例示した構成に限定されず、設計や仕様等に応じて変更可能である。例えば、実施例1と実施例2を組み合わせて、多回収領域用内部通過領域が少回収領域用内部通過領域に比べて、高い位置に配置し且つ開口面積を大きく構成することができる。他にも、高さや開口面積は高低、大小の2段階に限定されず、3段階以上の段階的あるいは連続的に変化するように構成することができる。
(H02) In the above-described embodiment, the cleaning device in which the object to be cleaned cleans the surface of the image carrier PR is exemplified as the cleaning device. However, the cleaning device is not limited to this, and the cleaning device for the transfer roll TR and the cleaning device for the charging roll CR. It is also applicable to. In addition, in a color image forming apparatus, the present invention can also be applied to a cleaner that cleans a belt-shaped or drum-shaped intermediate transfer member.
(H03) In the above embodiment, the position and size of the internal passage region are not limited to the configuration illustrated in the embodiment, and can be changed according to the design, specifications, and the like. For example, by combining the first embodiment and the second embodiment, the multiple recovery area internal passage area can be arranged at a higher position and the opening area can be made larger than the low recovery area internal passage area. In addition, the height and the opening area are not limited to two levels of high, low, and large, and can be configured to change stepwise or continuously in three or more steps.

(H04)前記実施例において、搬送部材は、下流側の搬送力が高くなるように、回転軸の径や搬送羽根のピッチを調整する場合を例示したが、これに限定されず、他にも、上流側に搬送能力を有しない撹拌用の板状部材、いわゆる、パドルを設け、搬送速度を低下させることで、相対的に下流側の搬送能力を高めたり、搬送羽根の厚みを薄くすることで羽根どうしの間隔を広げて搬送能力を高めたり等の構成を採用することも可能である。また、各実施例の搬送部材の構成を組み合わせることも可能であり、さらに、回転軸の径やピッチの変化のさせ方は、実施例に例示した2段階に限定されず、3段階以上の段階的あるいは連続的に変化するように構成することも可能である。
(H05)前記実施例5〜7において、堰き止めフィルム21に、実施例1〜4の内部通過領域形成口を設けることも可能である。
(H04) In the above-described embodiment, the conveyance member is exemplified to adjust the diameter of the rotation shaft and the pitch of the conveyance blades so that the conveyance force on the downstream side is increased. However, the present invention is not limited to this. By providing a plate-like member for stirring that does not have a conveyance capability on the upstream side, a so-called paddle, and lowering the conveyance speed, relatively increasing the conveyance capability on the downstream side or reducing the thickness of the conveyance blades It is also possible to adopt a configuration such as increasing the interval between the blades to increase the conveying capability. Moreover, it is also possible to combine the structure of the conveyance member of each Example, Furthermore, the method of changing the diameter and pitch of a rotating shaft is not limited to 2 steps illustrated in the Example, but 3 steps or more steps It is also possible to configure it to change continuously or continuously.
(H05) In Examples 5 to 7, it is also possible to provide the damming film 21 with the internal passage region forming port of Examples 1 to 4.

(H06)前記実施例において、搬送部材として、回転軸と搬送羽根とを有するオーガを例示したが、これに限定されず、つるまきばね状の搬送部材、いわゆるアジテータを使用することも可能である。また、搬送羽根は螺旋状の搬送羽根に限定されず、半月板状の羽根を回転軸に傾斜して固定する構成等を採用することも可能である。
(H07)前記実施例において、内部通過領域形成口の形状や個数、配置間隔、大きさ等は、任意に変更可能であり、例えば、形状は、四角状に限定されず、丸形や楕円形、あるいは、三角形、五角形等の多角形等任意の形状とすることも可能である。
(H08)前記実施例において、実施例1〜4の構成に実施例5〜8の構成を適用して、下端部が支持された堰き止めフィルムの幅方向の上端の高さを、搬送方向Yaの下流側や、下流側および上流側で高くすることも可能である。
(H09)前記実施例において、内部通過領域と搬送部材との上下方向の高さの関係は、実施例に例示した構成に限定されず、設計等に応じて任意に変更可能である。例えば、搬送オーガ13の搬送羽根13bの上端を内部通過領域形成口の下端よりも下方にすることで、内部通過領域が塞がれにくくすることも可能である。
(H06) In the above embodiment, the auger having the rotating shaft and the conveying blade is exemplified as the conveying member. However, the conveying member is not limited to this, and a helical spring-like conveying member, so-called agitator can be used. . Further, the conveying blade is not limited to the helical conveying blade, and it is also possible to adopt a configuration in which the meniscus blade is inclined and fixed to the rotation axis.
(H07) In the above embodiment, the shape, number, arrangement interval, size, etc. of the internal passage region forming port can be arbitrarily changed. For example, the shape is not limited to a square shape, but a round shape or an oval shape. Alternatively, it may be an arbitrary shape such as a polygon such as a triangle or a pentagon.
(H08) In the above-described embodiment, the configurations of Examples 5 to 8 are applied to the configurations of Examples 1 to 4, and the height of the upper end in the width direction of the damming film supported at the lower end is set to the transport direction Ya. It is also possible to make the height higher on the downstream side, downstream side and upstream side.
(H09) In the above embodiment, the vertical relationship between the internal passage area and the conveying member is not limited to the configuration illustrated in the embodiment, and can be arbitrarily changed according to the design or the like. For example, by setting the upper end of the transport blade 13b of the transport auger 13 below the lower end of the internal passage region forming port, it is possible to make it difficult to block the internal passage region.

図18は変更例の説明図であり、図18Aは実施例1の図8に対応する変更例のクリーニングブレードと堰き止め部材と搬送部材との関係を説明する説明図、図18Bは図18AのXVIIIB−XVIIIB線断面図である。
(H010)これまでの実施例では、搬送オーガーの下流側で搬送量を大きくすることで現像剤の蓄積量が過剰となった場合の堰き止めフィルム8の変形を低減しているが、図18に示すように、堰き止めフィルムの形状を変更しても良い。例えば、図18Aにおいて、変更例の清掃器CL1では、堰き止め部材の一例としての堰き止めフィルム8′は、搬送方向Yaの下流側の上端8a1が、搬送方向Yaの中央部および上流側の上端8a2に比べて、低く形成されている。また、変更例では、実施例8の搬送オーガ13と同様の搬送オーガ13を使用しているが、下流側の少回収領域用内部通過領域形成口8c2に対応する領域の上端8a1を低く形成することで、下流側と中・上流側の搬送能力が同じ清掃器にも適用が可能である。図18Bにおいて、変更例では、下流側搬送羽根13b1″の外径の重力方向上端は、少回収領域用内部通過領域形成口8c2の下端よりも高い位置となるように構成されている。
FIG. 18 is an explanatory diagram of the modified example, FIG. 18A is an explanatory diagram for explaining the relationship among the cleaning blade, the damming member, and the conveying member of the modified example corresponding to FIG. 8 of the first embodiment, and FIG. 18B is the diagram of FIG. It is XVIIIB-XVIIIB sectional view taken on the line.
(H010) In the previous examples, the deformation of the damming film 8 when the developer accumulation amount is excessive is reduced by increasing the conveyance amount on the downstream side of the conveyance auger. The shape of the damming film may be changed as shown in FIG. For example, in FIG. 18A, in the cleaning device CL1 of the modified example, the damming film 8 ′ as an example of the damming member has an upper end 8a1 on the downstream side in the transport direction Ya, and an upper end on the central portion and the upstream side in the transport direction Ya. It is formed lower than 8a2. In the modified example, the transport auger 13 similar to the transport auger 13 of the eighth embodiment is used, but the upper end 8a1 of the region corresponding to the downstream-side small recovery region internal passage region forming port 8c2 is formed low. Thus, the present invention can be applied to a cleaning device having the same conveying ability on the downstream side and the middle / upstream side. In FIG. 18B, in the modified example, the upper end in the gravity direction of the outer diameter of the downstream conveying blade 13b1 ″ is configured to be higher than the lower end of the small recovery region internal passage region forming port 8c2.

このような構成を備えた変更例の清掃器CL1では、堰き止めフィルム8′の下流側の上端8a1が、中、上流側の上端8a2に比べて低く、現像剤が下流側で上方を乗り越えて流入しやすい。従って、堰き止めフィルム8′で堰き止められたトナー堰き止め空間K1内の現像剤量が少ない時には、少回収領域用内部通過領域形成口8c2を通過する通過量は多回収領域用内部通過領域R1a′を通過する通過量よりも小さく、クリーニングブレード29への現像剤供給が適切に行えるが、トナー堰き止め空間K1での現像剤の蓄積量が過剰となった場合には、下流側の少回収領域に対応する堰き止め空間K1内のトナーが多回収領域のトナーよりも通過しやすいため、下流側の少回収領域に対応するトナー堰き止め空間K1のトナーの蓄積量の過剰を低減することができ、堰き止めフィルム8′の変形、破損が低減される。
なお、本変更例では、堰き止めフィルムの下流側の上端8a1を中、上流側の上端8a2に比べて低くすることで、トナー堰き止め空間K1での現像剤の蓄積量が過剰となった場合の通過量を増加させているが、クリーニングブレードの重力方向の下端よりも上方の位置に第2の開口を設けることで、トナー堰き止め空間K1での現像剤の蓄積量が過剰となった場合の通過量を増加するようにしてもよい。
In the cleaning device CL1 of the modified example having such a configuration, the upper end 8a1 on the downstream side of the damming film 8 'is lower than the upper end 8a2 on the middle and upstream sides, and the developer gets over the upper side on the downstream side. Easy to flow in. Therefore, when the amount of developer in the toner blocking space K1 blocked by the blocking film 8 ′ is small, the passing amount passing through the small recovery region internal passage region forming port 8c2 is the multiple recovery region internal passage region R1a. 'Is smaller than the passing amount through', and the developer can be appropriately supplied to the cleaning blade 29. However, when the developer accumulation amount in the toner damming space K1 becomes excessive, the downstream side small recovery amount is small. Since the toner in the dam space K1 corresponding to the region is more likely to pass than the toner in the multiple recovery region, it is possible to reduce the excessive amount of accumulated toner in the toner dam space K1 corresponding to the downstream small recovery region. The deformation and breakage of the damming film 8 'can be reduced.
In this modification, when the upper end 8a1 on the downstream side of the damming film is lower than the upper end 8a2 on the middle and upstream sides, the developer accumulation amount in the toner damming space K1 becomes excessive. The amount of developer accumulated in the toner blocking space K1 becomes excessive by providing the second opening at a position above the lower end of the cleaning blade in the gravitational direction. You may make it increase the passage amount of.

図1は本発明の実施例1の画像形成装置の全体説明図で断面図である。FIG. 1 is an overall explanatory view of an image forming apparatus according to Embodiment 1 of the present invention and is a sectional view. 図2は本発明の実施例1の清掃器部分の要部拡大図である。FIG. 2 is an enlarged view of a main part of the cleaner part of the first embodiment of the present invention. 図3は実施例1の清掃器の清掃部材が取り外された状態の斜視説明図である。FIG. 3 is a perspective explanatory view showing a state where the cleaning member of the cleaner according to the first embodiment is removed. 図4は図3に示す状態から漏出防止部材が取り外された状態の斜視説明図である。FIG. 4 is an explanatory perspective view of a state in which the leakage preventing member is removed from the state shown in FIG. 図5は図3の要部断面図である。FIG. 5 is a cross-sectional view of the main part of FIG. 図6は実施例1の清掃器の前側部分の斜視説明図である。FIG. 6 is a perspective explanatory view of a front portion of the cleaner according to the first embodiment. 図7は実施例1の清掃器の後側部分の斜視説明図である。FIG. 7 is a perspective explanatory view of a rear portion of the cleaning device of the first embodiment. 図8は実施例1のクリーニングブレードと堰き止め部材と搬送部材との関係を説明する説明図である。FIG. 8 is an explanatory diagram for explaining the relationship among the cleaning blade, the damming member, and the conveying member according to the first embodiment. 図9は作用説明図であり、図9Aは従来の堰き止め部材を備えた清掃器でせき止めが開始された状態の説明図、図9Bは図9Aから内部の現像剤の排出方向下流側で現像剤が増加した状態の説明図、図9Cは図9Bの状態からトナー堰き止め空間の回収トナーが過剰になり堰き止め部材が折れ曲がった状態の説明図である。FIG. 9 is an explanatory diagram of the operation, FIG. 9A is an explanatory diagram of a state in which clogging is started by a conventional cleaner equipped with a damming member, and FIG. FIG. 9C is an explanatory diagram of a state where the amount of toner collected in the toner damming space becomes excessive and the damming member is bent from the state of FIG. 9B. 図10は本発明の実施例2の清掃器の説明図であり、実施例1の図8に対応する図である。FIG. 10 is an explanatory diagram of the cleaning device according to the second embodiment of the present invention, and corresponds to FIG. 8 of the first embodiment. 図11は本発明の実施例3の清掃器の説明図であり、実施例1の図8に対応する図である。FIG. 11 is an explanatory diagram of the cleaning device according to the third embodiment of the present invention, and corresponds to FIG. 8 according to the first embodiment. 図12は本発明の実施例4の清掃器の説明図であり、実施例1の図8に対応する図である。FIG. 12 is an explanatory diagram of the cleaning device according to the fourth embodiment of the present invention, and corresponds to FIG. 8 of the first embodiment. 図13は本発明の実施例5の像保持体PRおよび清掃器の要部説明図であり、実施例1の図2に対応する図である。FIG. 13 is an explanatory diagram of a main part of the image carrier PR and the cleaner according to the fifth embodiment of the present invention, and corresponds to FIG. 2 of the first embodiment. 図14は実施例5の清掃器の説明図であり、実施例1の図8に対応する図である。FIG. 14 is an explanatory diagram of the cleaning device of the fifth embodiment, and corresponds to FIG. 8 of the first embodiment. 図15は本発明の実施例6の清掃器の説明図であり、実施例5の図14に対応する図である。FIG. 15 is an explanatory diagram of a cleaner according to a sixth embodiment of the present invention, and corresponds to FIG. 14 according to the fifth embodiment. 図16は本発明の実施例7の清掃器の説明図であり、実施例5の図14に対応する図である。FIG. 16 is an explanatory diagram of the cleaning device according to the seventh embodiment of the present invention and corresponds to FIG. 14 according to the fifth embodiment. 図17は本発明の実施例8の清掃器の説明図であり、実施例5の図14に対応する図である。FIG. 17 is an explanatory diagram of a cleaner according to an eighth embodiment of the present invention, and corresponds to FIG. 14 according to the fifth embodiment. 図18は変更例の説明図であり、図18Aは実施例1の図8に対応する変更例のクリーニングブレードと堰き止め部材と搬送部材との関係を説明する説明図、図18Bは図18AのXVIIIB−XVIIIB線断面図である。FIG. 18 is an explanatory diagram of the modified example, FIG. 18A is an explanatory diagram for explaining the relationship among the cleaning blade, the damming member, and the conveying member of the modified example corresponding to FIG. 8 of the first embodiment, and FIG. 18B is the diagram of FIG. It is XVIIIB-XVIIIB sectional view taken on the line.

符号の説明Explanation of symbols

1…清掃容器、
1a…開口、
7…クリーニングブレード、
8,21…堰き止め部材、
8c…内部通過領域形成口、
8c1…多回収領域用内部通過領域形成口、
8c2…少回収領域用内部通過領域形成口、
13…搬送部材、
13a,13a′…回転軸、
13b,13b′,13b″…搬送羽根、
A1…多回収領域、
A2,A2a,A2b…少回収領域、
CL1,CL1′…清掃器、
D…現像器、
PR…像保持体、
R1,R1′…内部通過領域、
R1a,R1a′…多回収領域用内部通過領域、
R1b,R1b′…少回収領域用内部通過領域、
TR…転写器、
U…画像形成装置。
1 ... Cleaning container,
1a ... opening,
7 ... Cleaning blade,
8, 21 ... Damping member,
8c ... Internal passage region forming port,
8c1 ... multi-recovery region internal passage region forming port,
8c2 ... an internal passage area forming port for a small recovery area,
13 ... conveying member,
13a, 13a '... rotating shaft,
13b, 13b ', 13b "... conveying blades,
A1 ... Multiple recovery area,
A2, A2a, A2b ... small recovery area,
CL1, CL1 '... cleaner,
D ... Developer,
PR: Image carrier,
R1, R1 '... internal passage region,
R1a, R1a '... internal passage area for multiple recovery area,
R1b, R1b '... an internal passage area for a small recovery area,
TR ... Transfer,
U: Image forming apparatus.

Claims (4)

トナーを含む現像剤で形成された像を保持する像保持体の表面に接触して前記像保持体表面の現像剤を除去することで前記像保持体表面を清掃する清掃部材と、
前記清掃部材で前記保持体表面から除去された現像剤が収容される清掃容器と、
前記清掃容器内部に配置され且つ、前記清掃容器に収容された現像剤を予め設定された所定の搬送方向に搬送する搬送部材であって、前記搬送方向下流側の搬送能力が前記搬送方向上流側の搬送能力に比べて高い搬送部材と、
前記清掃部材と前記搬送部材との間に配置され重力方向の上端部が前記清掃容器に支持されると共に、重力方向の下端部が、前記清掃容器との間で、除去された現像剤の通過量を規制する間隙を構成する弾性変形可能な部材であって、前記像保持体の軸方向の中央部の重力方向下端に比べて、前記像保持体の軸方向の端部における重力方向の下端が低い位置に配置された弾性変形可能な部材と、
を備えたことを特徴とする清掃器。
A cleaning member that cleans the surface of the image carrier by removing the developer on the surface of the image carrier by contacting the surface of the image carrier that holds an image formed with a developer containing toner;
A cleaning container for storing the developer removed from the surface of the image carrier by the cleaning member;
A transport member that is disposed inside the cleaning container and transports the developer contained in the cleaning container in a predetermined transport direction that is set in advance , and the transport capability downstream in the transport direction is upstream in the transport direction High conveying member compared to the conveying capacity of
Is disposed between the conveying member and the cleaning member, with the upper end portion in the gravity direction is supported by the cleaning container, the lower end of the direction of gravity, between the cleaning container, the removed developer An elastically deformable member that constitutes a gap that regulates the amount of passage of the image, and the gravity direction at the axial end of the image carrier compared to the lower end in the gravity direction of the central portion in the axial direction of the image carrier An elastically deformable member disposed at a lower end of the
A cleaning device comprising:
トナーを含む現像剤で形成された像を保持する像保持体と、
前記像保持体の表面に接触して前記像保持体表面の現像剤を除去することで前記像保持体表面を清掃する清掃部材と、
前記清掃部材で前記保持体表面から除去された現像剤が収容される清掃容器と、
前記清掃容器内部に配置され且つ、前記清掃容器に収容された現像剤を予め設定された所定の搬送方向に排出する搬送部材と、
前記像保持体と前記清掃部材との接触部と前記搬送部材との間に配置され、重力方向の上端部が前記清掃容器に支持されると共に、重力方向の下端部が、前記清掃容器との間で、除去された現像剤の通過量を規制する間隙を構成する弾性変形可能な部材であって、前記像保持体の軸方向の中央部における通過領域を前記搬送部材に向けて通過する現像剤量に比べて、前記像保持体の軸方向の端部における前記通過領域を通過する現像剤量が少なく、且つ、前記像保持体の軸方向の中央部の重力方向下端に比べて、前記像保持体の軸方向の端部における重力方向の下端が低い位置に配置された弾性変形可能な部材と、
を備え、
前記搬送部材は、前記搬送方向下流側且つ、少なくとも前記通過領域における通過する現像剤量が少ない部分の搬送能力が前記搬送方向上流側の搬送能力に比べて高い
ことを特徴とする像保持体ユニット。
An image carrier for holding an image formed with a developer containing toner;
A cleaning member that contacts the surface of the image carrier and removes the developer on the surface of the image carrier to clean the surface of the image carrier;
A cleaning container for storing the developer removed from the surface of the image carrier by the cleaning member;
A transport member disposed inside the cleaning container and for discharging the developer stored in the cleaning container in a predetermined transport direction set in advance;
The upper end in the gravitational direction is supported by the cleaning container and the lower end in the gravitational direction is disposed between the contact portion between the image carrier and the cleaning member and the transport member . between, a resiliently deformable member forming a gap to restrict the passage amount of the removed developer, passing through the passing area in the central portion in the axial direction of the image carrier toward said conveying member developing compared to agent amount, the rather small, the amount of developer passing through the passage area at the end portion in the axial direction of the image carrier, and, as compared with the gravity direction lower end of the central portion in the axial direction of the image carrier, An elastically deformable member disposed at a position where the lower end in the gravitational direction at the axial end of the image carrier is low;
With
The transport member has a transport capability downstream of the transport direction and at least a portion with a small amount of developer passing therethrough in the passage region, compared to a transport capability upstream of the transport direction .
An image carrier unit characterized by that.
トナーを含む現像剤で形成された像を保持する像保持体の表面に接触して前記像保持体表面の現像剤を除去することで前記像保持体表面を清掃する清掃部材と、
前記清掃部材で前記保持体表面から除去された現像剤が収容される清掃容器と、
前記清掃容器内部に配置され且つ、前記清掃容器に収容された現像剤を予め設定された所定の搬送方向に搬送する搬送部材と、
前記清掃部材と前記搬送部材との間に配置され、重力方向の下端が前記清掃容器に支持され、前記清掃部材で除去された現像剤が前記搬送部材に向けて通過するための通過領域を構成する開口前記像保持体の軸方向に沿って複数形成されることで除去された現像剤の通過量を規制する弾性変形可能な部材であって、前記像保持体の軸方向の中央部に形成された前記開口の開口面積に比べて前記像保持体の軸方向の端部に形成された前記開口の開口面積が小さい部材と、
を備え、
前記搬送部材は、前記搬送方向下流側且つ、少なくとも前記通過領域における通過する現像剤量が少ない部分の搬送能力が前記搬送方向上流側の搬送能力に比べて高い、
とを特徴とする像保持体ユニット。
A cleaning member that cleans the surface of the image carrier by removing the developer on the surface of the image carrier by contacting the surface of the image carrier that holds an image formed with a developer containing toner;
A cleaning container for storing the developer removed from the surface of the image carrier by the cleaning member;
A transport member disposed inside the cleaning container and transporting the developer contained in the cleaning container in a predetermined transport direction set in advance;
Located between the cleaning member and the transport member, a lower end in the direction of gravity is supported by the cleaning container, and a passage region for allowing the developer removed by the cleaning member to pass toward the transport member is configured. opening, an elastically deformable member for regulating the passing amount of the developer in the axial direction is eliminated by being formed with a plurality of the image carrier, the central portion in the axial direction of the image carrier to and the image carrier the opening of the opening area is small not part material formed on the end portion in the axial direction as compared to the opening area of the opening formed in,
With
The transport member has a transport capability downstream of the transport direction and at least a portion with a small amount of developer passing therethrough in the passage region, compared to a transport capability upstream of the transport direction.
Image carrier unit, wherein the this.
下記の構成要件(A01)〜(A05)を備えたことを特徴とする画像形成装置、
(A01)回転する像保持体、
(A02)前記像保持体の軸方向の所定の幅に潜像を書き込む潜像書込装置、
(A03)前記像保持体表面の潜像を可視像に現像する現像器、
(A04)前記像保持体表面の可視像を媒体に転写する転写器、
(A05)前記像保持体の表面に接触して、転写後の前記像保持体表面の現像剤を除去することで前記像保持体表面を清掃する清掃部材と、
前記清掃部材で前記保持体表面から除去された現像剤が収容される清掃容器と、
前記清掃容器内部に配置され且つ、前記清掃容器に収容された現像剤を予め設定された所定の搬送方向に排出する搬送部材であって、前記搬送方向下流側の搬送能力が前記搬送方向上流側の搬送能力に比べて高い搬送部材と、
前記像保持体と前記清掃部材との接触部と前記搬送部材との間に配置され重力方向の上端部が前記清掃容器に支持されると共に、重力方向の下端部が、前記清掃容器との間で、除去された現像剤の通過量を規制する間隙を構成する弾性変形可能な部材であって、前記像保持体の軸方向の中央部における通過領域を前記搬送部材に向けて通過する現像剤量に比べて、前記像保持体の軸方向の端部における前記通過領域を通過する現像剤量が少なく、且つ、前記像保持体の軸方向の中央部の重力方向下端に比べて、前記像保持体の軸方向の端部における重力方向の下端が低い位置に配置された弾性変形可能な部材と、
を有する清掃器。
An image forming apparatus comprising the following structural requirements (A01) to (A05):
(A01) Rotating image carrier,
(A02) A latent image writing device for writing a latent image in a predetermined width in the axial direction of the image carrier,
(A03) a developing device for developing the latent image on the surface of the image carrier into a visible image;
(A04) a transfer device for transferring a visible image on the surface of the image carrier to a medium;
(A05) a cleaning member that contacts the surface of the image carrier and removes the developer on the surface of the image carrier after transfer to clean the surface of the image carrier;
A cleaning container for storing the developer removed from the surface of the image carrier by the cleaning member;
A conveying member disposed inside the cleaning container and discharging developer stored in the cleaning container in a predetermined conveying direction set in advance , wherein the conveying ability downstream in the conveying direction is upstream in the conveying direction. High conveying member compared to the conveying capacity of
The upper end in the gravitational direction is supported by the cleaning container and the lower end in the gravitational direction is disposed between the contact portion between the image carrier and the cleaning member and the transport member . Development that is an elastically deformable member that forms a gap that regulates the passage amount of the removed developer, and that passes through the passage region in the axial center of the image carrier toward the conveying member. Compared to the amount of developer, the amount of developer passing through the passage region at the axial end of the image carrier is small, and compared to the lower end in the gravity direction of the central portion in the axial direction of the image carrier. An elastically deformable member disposed at a position where the lower end of the gravitational direction is low at the axial end of the image carrier;
Having a cleaner.
JP2007069260A 2007-03-16 2007-03-16 Cleaning device, image carrier unit, and image forming apparatus Expired - Fee Related JP4992495B2 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5326725B2 (en) * 2009-03-25 2013-10-30 富士ゼロックス株式会社 Image forming apparatus, cartridge, and cleaner
JP6024312B2 (en) * 2012-09-06 2016-11-16 カシオ電子工業株式会社 Toner conveying apparatus and printing apparatus
JP5994989B2 (en) 2012-09-28 2016-09-21 村田機械株式会社 Cleaning unit and image forming apparatus provided with the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0572952A (en) * 1991-09-18 1993-03-26 Fujitsu Ltd Discarded toner recovering device for printer
JP3695496B2 (en) * 1997-11-28 2005-09-14 富士ゼロックス株式会社 Photoconductor cleaner
JP2001042728A (en) * 1999-07-30 2001-02-16 Seiko Epson Corp Image forming device
JP3767267B2 (en) * 1999-08-31 2006-04-19 富士ゼロックス株式会社 Cleaner device
JP2006139084A (en) * 2004-11-12 2006-06-01 Canon Inc Process cartridge and image forming apparatus having the same
JP4807114B2 (en) * 2006-03-14 2011-11-02 富士ゼロックス株式会社 Cleaner device

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