JPH05204281A - Residual toner recovering device - Google Patents

Residual toner recovering device

Info

Publication number
JPH05204281A
JPH05204281A JP4035695A JP3569592A JPH05204281A JP H05204281 A JPH05204281 A JP H05204281A JP 4035695 A JP4035695 A JP 4035695A JP 3569592 A JP3569592 A JP 3569592A JP H05204281 A JPH05204281 A JP H05204281A
Authority
JP
Japan
Prior art keywords
toner
storage part
pressurizing
square bar
accumulated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4035695A
Other languages
Japanese (ja)
Inventor
Makoto Arai
誠 荒井
Toshitaka Yamaguchi
俊隆 山口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP4035695A priority Critical patent/JPH05204281A/en
Publication of JPH05204281A publication Critical patent/JPH05204281A/en
Pending legal-status Critical Current

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  • Cleaning In Electrography (AREA)

Abstract

PURPOSE:To discard only discharged toner accumulated in a storage part and to reuse a storage tank by pressurizing the upper layer of toner accumulated in the storage part by the use of the pressurizing means of a toner flow-down part where the ejection port of carried toner is extended. CONSTITUTION:The carried toner flows down in the flow-down part 14 from a residual toner ejection port 12, and is accumulated in the storage part 17 to become the discharged toner. The free end 18B of a 'Mylar(R)' plate 18 for pressurizing is rocked with amplitude corresponding to the moving diameter difference of a square bar 16 at the abutting position of the outer peripheral surface of the square bar 16 on the free end 18B with the rotation of the square bar 16. In the case that accumulation progresses and an accumulating surface layer S1 reaches the upper part S2 of the storage part 17, the accumulating surface layer is pressurized obliquely right downward by the rocking force of the free end 18B of the 'Mylar(R)' plate 18. The storage part 17 filled with the discharged toner is separated from a carrying screw 35, the square bar 16, and the 'Mylar(R)' plate 18 and drawn out to the outside of the machine, then only the discharged toner in the part 17 is discarded and the empty storage part is reused.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は感光体の表面から除去さ
れた残留トナーを回収する画像形成装置のトナー回収装
置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toner recovery device for an image forming apparatus for recovering residual toner removed from the surface of a photoconductor.

【0002】[0002]

【従来の技術】近年、電子写真プロセスを利用した画像
形成装置において複写画像の高画質化が進んだことによ
り現像トナーの粒子が小さくなってきている。たとえ
ば、従来の粒子の径は10〜15μであったのに対し現状で
はその径が5〜7. 5μに微小化するに至っている。こ
のように微小化された現像トナーに、ある極性の電荷を
与えると、その極性と逆極性の電荷を持つトナーが微小
化に応じて増加する傾向にある。この逆極性のトナー
は、感光体の表面がマグブラシなどを利用して接触現像
される際に、この表面の非画像部に付着する傾向にあ
る。この表面の非画像部に付着したトナーの極性は、転
写チャージャーの極性と同極であるので、転写紙には転
写されず、この非画像部に付着したままクリーニングス
テージにおいてクリーニングされる。
2. Description of the Related Art In recent years, particles of developing toner have become smaller due to the progress of higher image quality of copied images in an image forming apparatus utilizing an electrophotographic process. For example, the diameter of conventional particles was 10 to 15 μm, but at present, the diameter has been reduced to 5 to 7.5 μm. When an electric charge of a certain polarity is applied to the development toner thus miniaturized, the toner having a charge of the opposite polarity to the polarity tends to increase in accordance with the miniaturization. The toner of the opposite polarity tends to adhere to the non-image portion of the surface of the photoconductor when the surface of the photoconductor is contact-developed using a mag brush or the like. Since the polarity of the toner attached to the non-image area on the surface is the same as the polarity of the transfer charger, it is not transferred to the transfer paper and is cleaned on the cleaning stage while attached to the non-image area.

【0003】また、現像トナーの粒子が小さくなると、
単位体積当りに集合しうる粒子の数(密度)が高くなる
ので、その分だけ集合面積が大きくなり、単位体積当り
の総帯電量(帯電密度)が高くなる。したがって、感光
体の表面への帯電トナーの吸着力が大きくなって、帯電
トナーは転写紙に転写されにくく、感光体の表面に残留
する傾向が強くなり、転写効率が数%悪くなる。このよ
うな事情により、クリーニング部で回収されるトナーの
量が増加し、その量は供給されるトナー量の30〜40%に
達している。そのために回収されたトナーの貯留容積が
増大し、装置の小型化、省スペース化が進展しない現状
にある。この現状を打開するために貯留タンクの中で回
収したトナーの凝集度を高めて固化密度を高め、貯留タ
ンクの容積を小さくする技術が開発されている。
Also, when the particles of the developing toner become small,
Since the number of particles (density) that can be aggregated per unit volume is increased, the aggregated area is correspondingly increased, and the total charge amount (charge density) per unit volume is increased. Therefore, the attracting force of the charged toner on the surface of the photoconductor becomes large, the charged toner is less likely to be transferred to the transfer paper, the tendency to remain on the surface of the photoconductor becomes strong, and the transfer efficiency deteriorates by several percent. Due to such circumstances, the amount of toner collected in the cleaning unit increases, and the amount reaches 30 to 40% of the amount of toner supplied. Therefore, the storage volume of the collected toner is increased, and the downsizing of the apparatus and the space saving are not progressing. In order to overcome this situation, a technique has been developed in which the degree of aggregation of the toner collected in the storage tank is increased to increase the solidification density and the volume of the storage tank is reduced.

【0004】しかしながら、貯留タンクの中で回収トナ
ーの凝集度を高めると、このタンク内から凝集トナーだ
けを取り出すことができず、貯留タンクとともに捨てざ
るを得ず、貯留タンクの再利用ができないのが現状であ
る。
However, if the coagulation degree of the collected toner is increased in the storage tank, only the coagulated toner cannot be taken out from the storage tank and must be discarded together with the storage tank, and the storage tank cannot be reused. Is the current situation.

【0005】[0005]

【発明の目的】そこで、本発明は貯留部に落下して堆積
した廃トナーだけを廃棄し貯留タンクを再利用しうる画
像形成装置のトナー回収装置を提供することを目的とす
る。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a toner collecting device for an image forming apparatus, which can discard only the waste toner that has fallen and accumulated in the storage portion and can reuse the storage tank.

【0006】[0006]

【発明の構成】本発明は上述の目的を達成するために、
画像形成装置の残留トナー回収装置において、搬送トナ
ーを排出する排出口が延出されて、加圧手段を備えたト
ナー流下部と、排出口から流出して流下するトナーを収
容する着脱自在の貯留部とを具備し、加圧手段が貯留部
に堆積されたトナーの上層を加圧する構成とし、加圧手
段は、排出口から落下するトナーを受ける開口部を有す
る加圧用搬送スクリュー案内筒に内挿した加圧用搬送ス
クリューとし、また、加圧手段は、動径差を有する外周
断面を有する回転杆と、この回転杆の外周面と当接し
て、揺動する自由端を有する加圧用薄板とで構成した。
In order to achieve the above-mentioned object, the present invention comprises:
In a residual toner collecting device of an image forming apparatus, a discharge port for discharging conveyed toner is extended, and a detachable storage for accommodating toner flowing down from the discharge port and toner flowing down from the discharge port. And a pressurizing unit pressurizes an upper layer of the toner accumulated in the storage unit, and the pressurizing unit is provided in a pressurizing conveying screw guide cylinder having an opening for receiving the toner falling from the discharge port. And a rotating rod having an outer peripheral cross-section having a radial difference, and a pressing thin plate having a free end which abuts on the outer peripheral surface of the rotating rod and swings. Composed of.

【0007】[0007]

【作用】感光体の表面から除去された残留トナーが搬送
路の排出口から落下して貯留部に堆積される。堆積トナ
ーの上層が、流下部の底部に近接してきた際に、加圧さ
れる。この堆積トナーは、上層から下層に向かってしだ
いに圧縮されていく。
The residual toner removed from the surface of the photoconductor drops from the discharge port of the conveyance path and is accumulated in the storage section. When the upper layer of the deposited toner comes close to the bottom of the effluent, it is pressed. The accumulated toner is gradually compressed from the upper layer to the lower layer.

【0008】堆積トナーが充満された貯留部は、搬送手
段の排出口が延出している流下部と離脱され、機外に引
き出された後、堆積トナーが廃棄されて空になった貯留
部は、流下部に装着されて再利用される。
The storage section filled with the accumulated toner is separated from the lower stream portion where the discharge port of the conveying means is extended, and is drawn out of the machine. , It is attached to the lower stream and reused.

【0009】[0009]

【実施例】以下図面に基づいて本発明の実施例を説明す
る。図1は本発明の残留トナー回収装置を適用した画像
形成装置のクリーニング装置の周辺部の構成を示したも
のである。図中30は光導電物質を周面に構成した感光体
ドラムである。感光体ドラム30が、矢印Rで示す方向に
回転駆動されるとき、放電ワイヤ31とグリッド32で構成
された帯電器33によって感光体ドラム30の表面が一様に
帯電される。この帯電部分は、図示しない光信号発生装
置により光像露光を受けて、静電潜像を形成する。この
静電潜像は図示しない現像装置を通過するとき、顕像ト
ナーによって顕像化される。このようにして形成された
トナー像は、転写紙上に転写され、転写を終えた転写紙
は、感光ドラム30から分離され、定着後排出される。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of a peripheral portion of a cleaning device of an image forming apparatus to which the residual toner collecting device of the present invention is applied. Reference numeral 30 in the figure denotes a photoconductor drum having a photoconductive material on its peripheral surface. When the photoconductor drum 30 is rotationally driven in the direction indicated by the arrow R, the surface of the photoconductor drum 30 is uniformly charged by the charger 33 including the discharge wire 31 and the grid 32. The charged portion is exposed to an optical image by an optical signal generator (not shown) to form an electrostatic latent image. When this electrostatic latent image passes through a developing device (not shown), it is visualized by a visible toner. The toner image thus formed is transferred onto the transfer paper, and the transfer paper after the transfer is separated from the photosensitive drum 30, fixed, and ejected.

【0010】上記の如く転写を終えた感光体ドラム30の
表面には、転写されずに残ったトナーが付着している。
感光体ドラム30の表面に接触しているクリーニングブレ
ード34によって掻き落されたトナーは、感光体ドラム30
の回転軸に並行に設けられた搬送スクリュー35に向って
落下する。36は落下トナーのクリ−ニングユニット外へ
の漏れを防止する入口シールである。この入口シ−ル36
は、クリーニングユニットを区画する枠体37の開口端38
と感光体ドラム30の表面との隙間を塞いでいる。
On the surface of the photosensitive drum 30 which has been transferred as described above, the toner remaining without being transferred is attached.
The toner scraped off by the cleaning blade 34 in contact with the surface of the photoconductor drum 30 is
Falls toward the conveying screw 35 provided in parallel with the rotating shaft of the. Reference numeral 36 is an inlet seal for preventing falling toner from leaking out of the cleaning unit. This entrance seal 36
Is the open end 38 of the frame 37 that partitions the cleaning unit.
And the surface of the photosensitive drum 30 is closed.

【0011】クリーニングブレード34は、たとえば、ポ
リウレタンゴムを用いる。感光体ドラム30の表面に当接
している一端と反対側他端は、ブレードホルダ39に固定
される。このブレードホルダ39のブレード固定端と反対
側の曲げ部40に固定された突設部材41と枠体37との間に
緊縮性のばね42が係っている。このばね42は、上記諸部
材34、39、41で構成されるブレードリンクを軸43を中心
として反時計方向に回動させ先端エッジ34Aと感光体ド
ラム30の表面との当接部において当接力を生じさせる。
The cleaning blade 34 is made of polyurethane rubber, for example. One end that is in contact with the surface of the photosensitive drum 30 and the other end that is opposite to the one end are fixed to the blade holder 39. The elastic spring 42 is engaged between the projecting member 41 fixed to the bending portion 40 on the side opposite to the blade fixing end of the blade holder 39 and the frame body 37. The spring 42 rotates the blade link composed of the above-mentioned members 34, 39, 41 counterclockwise about the shaft 43 at the contact portion between the tip edge 34A and the surface of the photosensitive drum 30. Cause

【0012】搬送スクリュー35に向って落下したトナー
は、搬送スクリューの回転に伴って紙面の手前側から奥
側に向って搬送され画像形成装置の本体の内側に配置し
た破線で示す残留トナー回収部10に排出される。
The toner dropped toward the conveying screw 35 is conveyed from the front side to the rear side of the paper surface as the conveying screw rotates, and the residual toner collecting portion indicated by the broken line is arranged inside the main body of the image forming apparatus. It is discharged to 10.

【0013】図2は図1に示す搬送スクリュー35とそれ
に接続されている残留トナー回収部10で構成される残留
トナー回収装置を示した本発明の第1の実施例である。
管状の搬送路11の、図1で紙面の手前側に設けられた開
口部(図示しない)に向って落下してきたトナーは、こ
の開口部を通過して搬送路11に流下する。搬送路11に流
下したトナーは、搬送スクリュー35の回転によって搬送
力が付与され、図2において右方向(図1では奥側)に
搬送され、残留トナー排出口12に達する。搬送スクリュ
ー案内筒13は、流下部14の壁14Aを貫通してこの壁14A
に固く挿入されて、残留トナー排出口12がこの流下部14
に延出している。
FIG. 2 is a first embodiment of the present invention showing a residual toner collecting device composed of the conveying screw 35 shown in FIG. 1 and the residual toner collecting section 10 connected thereto.
The toner that has fallen toward the opening (not shown) provided on the front side of the paper surface in FIG. 1 of the tubular transport path 11 passes through this opening and flows down to the transport path 11. The toner that has flowed down to the conveying path 11 is conveyed by the rotation of the conveying screw 35, is conveyed rightward in FIG. 2 (back side in FIG. 1), and reaches the residual toner discharge port 12. The conveying screw guide cylinder 13 penetrates the wall 14A of the lower flow portion 14 and the wall 14A
The residual toner discharge port 12 is
Has been extended to.

【0014】図2において、搬送スクリュー35の回転軸
35Aと直交する方向に配設した回転軸15に直交する角断
面を有する角棒16が、残留トナー排出口12の右斜め下方
の流下部14内に、流下部14の手前側および奥側の枠壁に
軸支されて配設されている。貯留部17の左側壁17Aの上
端縁からはフランジ17Bが左方に延出している。また、
フランジ17Dが貯留部17の右側壁17Cから右方に延出し
ている。これらのフランジ17Bおよび17Dは、流下部14
の左右両側壁14A、14Bの下端に形成したU溝14Cおよ
び14Dにそれぞれ滑合している。
In FIG. 2, the rotating shaft of the conveying screw 35.
A square bar 16 having an angular cross section orthogonal to the rotating shaft 15 arranged in a direction orthogonal to 35 A is provided in a lower flow portion 14 obliquely lower right of the residual toner discharge port 12 on the front side and the rear side of the lower flow portion 14. It is arranged so as to be axially supported by the frame wall. A flange 17B extends leftward from the upper edge of the left side wall 17A of the storage section 17. Also,
The flange 17D extends rightward from the right side wall 17C of the storage section 17. These flanges 17B and 17D are located in the lower part 14
And U-grooves 14C and 14D formed at the lower ends of the left and right side walls 14A and 14B, respectively.

【0015】加圧用マイラー板(加圧手段)18の一端18
Aを、U溝14Dを形成する枠壁に連なって左方に延びる
枠壁14Eの下縁14Fに、角棒16の回転軸15の方向に沿っ
て固定する。角棒16が回転する際に、その陵16A、16
B、16C、16Dは各陵の動径に応ずる円筒軌跡19を描
く。その際、加圧用マイラー板18の自由端18Bは、角棒
16の外周面に当接して、この面を押圧している。
One end 18 of a pressing mylar plate (pressurizing means) 18
A is fixed to the lower edge 14F of the frame wall 14E that extends to the left in succession to the frame wall forming the U groove 14D along the direction of the rotation axis 15 of the square rod 16. When the square bar 16 rotates, its ridge 16A, 16
B, 16C and 16D draw a cylindrical locus 19 corresponding to the radius of each tomb. At that time, the free end 18B of the pressing mylar plate 18 is a square bar.
It abuts against the outer peripheral surface of 16 and presses against this surface.

【0016】搬送トナーは残留トナー排出口12に次々に
搬送され、この排出口12から流下部14内を流下し貯留部
17内に堆積され廃トナーとなる。加圧用マイラー板18の
自由端18Bは、軸15に伝達される回転力による角棒16の
矢印Rに示す方向の回転に伴って、角棒16の外周面と自
由端18Bとの当接位置における角棒16の動径差に対応す
る振幅で、矢印Pに示す上下の方向に揺動する。尚、角
棒16に替えて、自由端18Bに揺動振幅を付与することが
できる外周形状を有する回転杆で構成することもでき
る。
The conveyed toner is successively conveyed to the residual toner discharge port 12, and flows down from the discharge port 12 into the lower part 14 of the storage portion.
It is accumulated in 17 and becomes waste toner. The free end 18B of the pressing mylar plate 18 is brought into contact with the outer peripheral surface of the square bar 16 and the free end 18B in accordance with the rotation of the square bar 16 in the direction indicated by the arrow R by the rotational force transmitted to the shaft 15. It swings in the vertical direction indicated by arrow P with an amplitude corresponding to the radius vector difference of the square bar 16 at. Instead of the square bar 16, a rotary rod having an outer peripheral shape capable of imparting swinging amplitude to the free end 18B can be used.

【0017】堆積が進行してその堆積表層S1 が、貯留
部17の破線で示す上部(流下部14の下部と貯留部17の上
部との境界の近傍)S2 に達した際に、その堆積表層S
2 は、加圧用マイラー板18の自由端18Bの下方への揺動
力によって斜め右下方に加圧される。堆積表層S2 は、
S3 で示すように盛り上がって、貯留部17内の空間Q1
を、次第に埋めてゆく。
When the deposition surface layer S1 reaches the upper part (near the boundary between the lower part of the lower flow part 14 and the upper part of the storage part 17) S2 indicated by the broken line of the storage part 17 as the deposition progresses, the deposition surface layer S1 S
2 is pressed obliquely downward and to the right by the downward swinging force of the free end 18B of the pressing mylar plate 18. The deposition surface layer S2 is
As shown by S3, it rises and the space Q1 in the storage unit 17
Will be gradually filled.

【0018】廃トナーが充満した貯留部17は、機内に固
定された流下部14とその周辺に設けられている搬送スク
リュー35、角棒16、マイラー板18などと分離して、貯留
部17の引き出し把手(図示しない)を利用して機外に引
き出される。貯留部内の廃トナーが廃棄された空の貯留
部を、廃トナーで充満した貯留部17と交換する。この充
満した貯留部は、その中の廃トナーだけが廃棄され、空
になったその貯留部は、再利用される。
The storage section 17 filled with the waste toner is separated from the flow-down section 14 fixed inside the machine and the conveying screw 35, the square bar 16, the mylar plate 18, etc. provided around the flow section 14, and the storage section 17 of the storage section 17 is separated. It is pulled out of the machine using a pull-out handle (not shown). An empty storage part in which the waste toner is discarded is replaced with a storage part 17 filled with the waste toner. Only the waste toner in the filled storage unit is discarded, and the storage unit that is empty is reused.

【0019】図3は図1に示す搬送スクリュー35とそれ
に接続されている残留トナー回収部10で構成される残留
トナー回収装置を示した本発明の第2の実施例である。
搬送スクリュー案内筒13は、流下部20の壁20Aを貫通し
てこの壁20Aに固く挿入されて、残留トナー排出口12が
この流下部20に延出している。搬送スクリュー35の回転
軸35Aと平行する方向に配設した回転軸21Aを有する加
圧用搬送スクリュー(加圧手段)21が、流下部20内に、
加圧用搬送スクリュー案内筒22を伴って配設されてい
る。開口部22Aが、案内筒22の上部に回転軸21Aの方向
に沿って設けられている。この開口部は残留トナー排出
口12から落下してくるトナーを、この案内筒内に落ち込
ませる。開口部22Aを通り抜けて加圧用搬送スクリュー
案内筒13内に落ち込んだトナーは、加圧用搬送スクリュ
ー21によってこの案内筒22内を左方に搬送される。加圧
用搬送スクリュー21は、回転軸21Aの一端に固定された
歯車23に伝達される回転力を受ける。搬送トナー排出口
22Bは貯留部24の側壁24Aの内側面24Bに対向して延出
部20内にある。落下トナーは搬送トナー排出口22Bから
流下部20内を流下し、貯留部24内に堆積して廃トナーと
なる。
FIG. 3 is a second embodiment of the present invention showing a residual toner collecting device composed of the conveying screw 35 shown in FIG. 1 and the residual toner collecting section 10 connected thereto.
The conveying screw guide cylinder 13 penetrates the wall 20A of the lower flow portion 20 and is firmly inserted into the wall 20A, and the residual toner discharge port 12 extends to the lower flow portion 20. A conveying screw for pressurization (pressurizing means) 21 having a rotating shaft 21A arranged in a direction parallel to the rotating shaft 35A of the conveying screw 35 is provided in the lower flow portion 20.
It is arranged with a pressurizing conveying screw guide tube 22. The opening 22A is provided in the upper part of the guide cylinder 22 along the direction of the rotating shaft 21A. This opening allows the toner falling from the residual toner discharge port 12 to fall into the guide cylinder. The toner that has passed through the opening 22A and has fallen into the pressurizing conveying screw guide cylinder 13 is conveyed leftward in the guide conveying cylinder 22 by the pressurizing conveying screw 21. The pressurizing conveyance screw 21 receives the rotational force transmitted to the gear 23 fixed to one end of the rotary shaft 21A. Conveying toner outlet
22B is located in the extending portion 20 so as to face the inner side surface 24B of the side wall 24A of the storage portion 24. The falling toner flows down from the conveyed toner discharge port 22B in the lower part 20 and is accumulated in the storage part 24 to become waste toner.

【0020】図2に示す第1の実施例と同様に、貯留部
24をこの延出部20に着脱できるU形の耳部20C、20D
を、延出部20の左右両側壁20A、20Bの下端に形成す
る。堆積が進行してその堆積表層S4 が、貯留部17の破
線で示すS5 に達した後、その堆積表層S5 は、加圧用
搬送スクリュー21の回転に伴って排出口22Bから排出さ
れる廃トナーに押されてしだいに上昇し、S6 に達し空
間Q2 を、しだいに埋めてゆく。この空間Q2 を埋めた
トナーが、排出口22Bから排出されるトナーに側面から
押されると、空間Q2 の上部24Cと搬送トナー排出口22
Bと対向している内側面24Bが閉鎖されているから、堆
積表層S5 は、S7 で示すように盛り上がって、貯留部
17内の空間Q3 を、しだいに埋めてゆく。
Similar to the first embodiment shown in FIG. 2, the storage section
U-shaped ears 20C and 20D that can attach and detach 24 to and from this extension 20
Are formed at the lower ends of the left and right side walls 20A and 20B of the extending portion 20. After the accumulation progresses and the accumulated surface layer S4 reaches S5 shown by the broken line of the storage unit 17, the accumulated surface layer S5 becomes waste toner discharged from the discharge port 22B as the pressing conveyance screw 21 rotates. When pushed, it gradually rises, reaches S6, and gradually fills the space Q2. When the toner filling the space Q2 is pushed from the side surface by the toner discharged from the discharge port 22B, the upper portion 24C of the space Q2 and the conveying toner discharge port 22.
Since the inner surface 24B facing B is closed, the deposition surface layer S5 rises as shown by S7, and the storage portion
The space Q3 in 17 will be gradually filled.

【0021】廃トナーが充満した貯留部24は、機内の固
定された延出部20とそれに付設されている搬送スクリュ
ー35、加圧用搬送スクリュー21などと分離され、機外に
引き出される。貯留部内の廃トナーが廃棄された後、貯
留部は再利用される。
The storage section 24 filled with the waste toner is separated from the fixed extension section 20 in the machine, the conveying screw 35 attached thereto, the pressurizing conveyance screw 21, and the like, and is drawn out of the apparatus. After the waste toner in the storage unit is discarded, the storage unit is reused.

【0022】[0022]

【発明の効果】以上説明したように、本発明によれば、
流下部の底部に近接した貯留部内の廃トナーの堆積上層
を加圧するので、堆積して充満した廃トナー全体として
の凝集度が低く、機外へ取り出した貯留部から廃トナー
だけを容易に分離廃棄することができる。そのため、こ
の貯留部を延出部の着脱部に交換装填して再使用するこ
とができる。したがって、一旦使用された貯留部を廃ト
ナーとともに捨てて、新たな貯留部を製造するエネルギ
ーが省略でき、コストの低下を期待できる。
As described above, according to the present invention,
Since the upper layer of waste toner accumulated in the reservoir near the bottom of the lower stream is pressed, the aggregated waste toner has a low degree of aggregation, and only the waste toner is easily separated from the reservoir taken out of the machine. Can be discarded. Therefore, this storage part can be reused by being exchange-loaded to the attachment / detachment part of the extension part. Therefore, it is possible to omit the energy for manufacturing the new storage portion by discarding the storage portion that has been used once together with the waste toner, and it can be expected to reduce the cost.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明を適用した画像形成装置の主要部の構成
を示す図である。
FIG. 1 is a diagram showing a configuration of a main part of an image forming apparatus to which the present invention is applied.

【図2】本発明の第1の実施例を示す図である。FIG. 2 is a diagram showing a first embodiment of the present invention.

【図3】本発明の第2の実施例を示す図である。FIG. 3 is a diagram showing a second embodiment of the present invention.

【符号の説明】[Explanation of symbols]

10…残留トナー回収部、12…残留トナー排出口、13、…
搬送スクリュー案内筒、14、20…流下部、15…回転軸、
16…角棒、17、24…貯留部、18…加圧用マイラー板、19
…円筒軌跡、21…加圧用搬送スクリュー、22…加圧用搬
送スクリュー案内筒、B…搬送トナー排出口、35…搬送
スクリュー。
10 ... Residual toner collecting section, 12 ... Residual toner outlet, 13, ...
Conveyor screw guide tube, 14, 20 ... Downstream part, 15 ... Rotating shaft,
16 ... Square bar, 17, 24 ... Reservoir, 18 ... Pressurizing mylar plate, 19
... cylindrical locus, 21 ... pressurizing conveying screw, 22 ... pressurizing conveying screw guide tube, B ... conveying toner discharge port, 35 ... conveying screw.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 画像形成装置の残留トナー回収装置にお
いて、クリーニング装置により回収され搬送されてきた
トナーを排出する排出口が延出されると共に、トナー加
圧手段を備えたトナー流下部と、前記排出口から流出し
て流下するトナーを収容する着脱自在の貯留部とを具備
し、前記加圧手段が前記貯留部に堆積されたトナーの上
層を加圧する構成としたことを特徴とする残留トナー回
収装置。
1. A residual toner collecting device of an image forming apparatus, wherein a discharge port for discharging the toner collected and conveyed by a cleaning device is extended, and a toner flow lower portion provided with a toner pressurizing unit and the discharging device. A residual storage portion for storing the toner flowing out from the outlet and flowing down, wherein the pressing means presses the upper layer of the toner accumulated in the storage portion. apparatus.
【請求項2】 前記加圧手段は、動径差を有する外周断
面を有する回転杆と、この回転杆の外周面と摺接して、
揺動する自由端を有する加圧用薄板とで構成したことを
特徴とする残留トナー回収装置。
2. The pressurizing means is in sliding contact with a rotating rod having an outer peripheral cross-section having a radial difference, and an outer peripheral surface of the rotating rod,
A residual toner collecting device comprising a pressing thin plate having a swinging free end.
【請求項3】 前記加圧手段は、前記排出口から落下す
るトナーを受ける開口部を有する案内筒に内挿した搬送
スクリューであることを特徴とする残留トナー回収装
置。
3. The residual toner collecting device according to claim 1, wherein the pressing means is a conveying screw inserted in a guide cylinder having an opening for receiving the toner falling from the discharge port.
JP4035695A 1992-01-27 1992-01-27 Residual toner recovering device Pending JPH05204281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4035695A JPH05204281A (en) 1992-01-27 1992-01-27 Residual toner recovering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4035695A JPH05204281A (en) 1992-01-27 1992-01-27 Residual toner recovering device

Publications (1)

Publication Number Publication Date
JPH05204281A true JPH05204281A (en) 1993-08-13

Family

ID=12449033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4035695A Pending JPH05204281A (en) 1992-01-27 1992-01-27 Residual toner recovering device

Country Status (1)

Country Link
JP (1) JPH05204281A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007163764A (en) * 2005-12-13 2007-06-28 Ricoh Co Ltd Toner recovery system and image forming device
US7599633B2 (en) 2005-11-15 2009-10-06 Ricoh Company, Ltd. Image forming apparatus dust container including dust conveyance members
JP2010107901A (en) * 2008-10-31 2010-05-13 Fuji Xerox Co Ltd Powder recovery container, powder recovery device using the same, and image forming apparatus
US7970336B2 (en) 2007-02-05 2011-06-28 Ricoh Company, Limited Powder housing unit and image forming apparatus with powder housing unit
JP2011128657A (en) * 2011-03-28 2011-06-30 Ricoh Co Ltd Toner collection device
US7974566B2 (en) * 2006-06-05 2011-07-05 Samsung Electronics Co., Ltd. Image-forming apparatus having apparatus for preventing accumulation of waste toner in waste toner container and method thereof
US20110206433A1 (en) * 2010-02-22 2011-08-25 Jarrett Clark Gayne Device for Moving and Storing Waste Toner in an Imaging Apparatus
JP2011191656A (en) * 2010-03-16 2011-09-29 Konica Minolta Business Technologies Inc Image forming apparatus
JP2012150187A (en) * 2011-01-18 2012-08-09 Ricoh Co Ltd Waste toner recovery container and image forming apparatus
JP2014178657A (en) * 2013-03-15 2014-09-25 Canon Inc Recovery developer container and image forming apparatus

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7599633B2 (en) 2005-11-15 2009-10-06 Ricoh Company, Ltd. Image forming apparatus dust container including dust conveyance members
JP2007163764A (en) * 2005-12-13 2007-06-28 Ricoh Co Ltd Toner recovery system and image forming device
US7974566B2 (en) * 2006-06-05 2011-07-05 Samsung Electronics Co., Ltd. Image-forming apparatus having apparatus for preventing accumulation of waste toner in waste toner container and method thereof
US7970336B2 (en) 2007-02-05 2011-06-28 Ricoh Company, Limited Powder housing unit and image forming apparatus with powder housing unit
JP2010107901A (en) * 2008-10-31 2010-05-13 Fuji Xerox Co Ltd Powder recovery container, powder recovery device using the same, and image forming apparatus
US20110206433A1 (en) * 2010-02-22 2011-08-25 Jarrett Clark Gayne Device for Moving and Storing Waste Toner in an Imaging Apparatus
US8315548B2 (en) * 2010-02-22 2012-11-20 Lexmark International, Inc. Cleaner assembly for moving and storing waste toner in an imaging apparatus using an auger disposed within a tube
JP2011191656A (en) * 2010-03-16 2011-09-29 Konica Minolta Business Technologies Inc Image forming apparatus
JP2012150187A (en) * 2011-01-18 2012-08-09 Ricoh Co Ltd Waste toner recovery container and image forming apparatus
JP2011128657A (en) * 2011-03-28 2011-06-30 Ricoh Co Ltd Toner collection device
JP2014178657A (en) * 2013-03-15 2014-09-25 Canon Inc Recovery developer container and image forming apparatus
US9880511B2 (en) 2013-03-15 2018-01-30 Canon Kabushiki Kaisha Container for waste developer and image forming apparatus

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