JPS5825681A - Cleaning device - Google Patents

Cleaning device

Info

Publication number
JPS5825681A
JPS5825681A JP12383581A JP12383581A JPS5825681A JP S5825681 A JPS5825681 A JP S5825681A JP 12383581 A JP12383581 A JP 12383581A JP 12383581 A JP12383581 A JP 12383581A JP S5825681 A JPS5825681 A JP S5825681A
Authority
JP
Japan
Prior art keywords
roller
magnetic
recording medium
toner
toners
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
JP12383581A
Other languages
Japanese (ja)
Inventor
Shiro Kondo
史朗 近藤
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 JP12383581A priority Critical patent/JPS5825681A/en
Publication of JPS5825681A publication Critical patent/JPS5825681A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0005Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
    • G03G21/0047Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using electrostatic or magnetic means; Details thereof, e.g. magnetic pole arrangement of magnetic devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To clean magnetic toners efficiently by providing a transfer type image recording device with the 2nd roller made of a magnetic body which rotates in contact with the 1st roller and a blade for scraping magnetic toner sticking to the 2nd roller. CONSTITUTION:Magnetic toners 4 remaining on the surface of a recording medium 1 after transfer are removed with fiberous hair implanted in a sleeve 9, and also transferred to the side of the 1st roller 2 by a magnetic and an electrostatic attracting force, thereby cleaning the toners effectively without scattering the magnetic toner 4 and deteriorating the surface of the recording medium 1. The after treatment of the magnetic toners 4 sticking to the 1st roller 2 is also performed efficiently by simple means such as the 2nd roller 3 and a blade 5, and its recovery is carried out without mixing impurities and paying attention to the blocking of the toners.

Description

【発明の詳細な説明】 本発明は、転写形の画像記録装置に8ける記録媒体のク
リーニングを行なわせるクリーニング装置に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning device for cleaning a recording medium in a transfer type image recording apparatus.

一般に、画情報に応じた荷電または露光によって静電潜
像が形成された記録媒体をトナーによって現像し、その
顕像化されたトナー画像を普通紙に転写ネせる静電記録
式または電子写真式の画像記録装置にあっては、転写後
に記録媒体面に残留するトナーをクリーニング装置によ
って清掃させて次の記録サイクルにそなえさせる必要が
ある。
Generally, an electrostatic recording type or an electrophotographic type in which a recording medium on which an electrostatic latent image is formed by charging or exposure according to image information is developed with toner, and the developed toner image is transferred to plain paper. In such an image recording apparatus, it is necessary to use a cleaning device to clean the toner remaining on the surface of the recording medium after transfer to prepare it for the next recording cycle.

従来、この種のクリーニング装置としては、ファーブラ
シを用いて記録媒体に付着するトナーを清掃させるよう
にしたもの、または記録媒体面に直接ブレードを作用さ
せてそれに付着するトナーをかき落丁ようにしたものが
用いられている。しかし、ファーブラシを用いたもので
は、それを比軟的高速で回転させて記録媒体面のクリー
ニングを行1ヱわせる必要があるためにブラシの摩耗や
脱毛が問題となり、また記轢媒体表面にフィルミングが
生じて記録媒体を劣化させてしまい、ざらにトナーが飛
散してしまうためにエアーなどでトナーを吸引させて回
収させるなどの手段を講する必要があって装置#が複雑
かつ大形化してしまい、回収トナーにブラシの毛1よど
の不純物が混入してしまうなどの種々の欠点がある。ま
た、ブレードによって記録媒体面のトナーをかき落丁も
のでは、ブレードによるトナーのブロッキングが問題に
なるとともに、ブレード先端によって記録媒体面を傷つ
けてしまうBそn、が多分にある。
Conventionally, this type of cleaning device used a fur brush to clean the toner adhering to the recording medium, or a blade applied directly to the surface of the recording medium to scrape off the toner adhering to it. something is being used. However, with fur brushes, it is necessary to rotate the fur brush at a relatively high speed to clean the surface of the recording medium, which causes problems such as wear and hair removal of the brush, and also Filming occurs and deteriorates the recording medium, and the toner scatters around, so it is necessary to take measures such as collecting the toner by suctioning it with air, making the device complicated and large. This has various drawbacks, such as the toner being hardened and impurities such as brush bristles being mixed into the collected toner. Further, in the case where the toner is scraped off from the surface of the recording medium by a blade, blocking of the toner by the blade becomes a problem, and the tip of the blade often damages the surface of the recording medium.

本発明は以上の点を考慮してばされたもので、簡単な構
成にまり記録媒体面のクリーニングおよびトナーの回収
を効率良く、シかも記録媒体面を何ら劣化させることな
く行なわせることができるクリーニング装置を提供下る
ものである。
The present invention has been developed in consideration of the above points, and is capable of cleaning the recording medium surface and collecting toner efficiently and without causing any deterioration of the recording medium surface using a simple configuration. A cleaning device is provided.

以下、添付図面を参照し゛C本発明の一実施例について
詳述する。
Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

本発明によるクリーニング装丁者にあっては、図Vc示
すように、記録媒体1(図ではドラム状のものを示して
いるが、これはベルト状のものであってもよい)に対し
て微小なギャップをもって配され、かつ記録媒体1の回
転とは逆方向に比較的低速で回転駆動される第1のロー
ラ2と、そのwllのローラ2と接触して回転下る磁性
材からなる第2のローラ3と、その第2のローラ3に付
着した磁性トナー4をかき落丁ブレード5と、そのブレ
ード5によってかき落された磁性トナー4を回収下る容
器6とによって構成されている。また、第10ローラ2
げ、内部の周辺に複数の磁極7が埋設されたマグローラ
8と、そのマグローラ8の外周囲に被覆され、かつ外面
に繊維状の毛が植毛されているとともに非磁性体の導電
性をもったスリーブ9とからなっている。
In the cleaning binder according to the present invention, as shown in FIG. A first roller 2 arranged with a gap and driven to rotate at a relatively low speed in a direction opposite to the rotation of the recording medium 1, and a second roller made of a magnetic material that rotates down in contact with the roller 2 of the wll. 3, a blade 5 for scraping off the magnetic toner 4 adhering to the second roller 3, and a container 6 for collecting the magnetic toner 4 scraped off by the blade 5. In addition, the 10th roller 2
The magnetic roller 8 has a plurality of magnetic poles 7 embedded in its inner periphery, and the outer periphery of the magnetic roller 8 is coated, and the outer surface is flocked with fibrous hair and has non-magnetic conductivity. It consists of a sleeve 9.

しかして、このように構成された本発明によるクリーニ
ング装置では、転写後に記録媒体1面に残留する磁性ト
ナー4が第1のローラ2のスIJ−ブ9の毛によっては
ぎとられ、そのはぎとられた磁性トナー4が磁極7の磁
力でスリーブ9側に吸引される。その際、毛によって機
械的にはぎとられた磁性トナー4は電荷を有しており、
かつ記録媒体1面の磁性トナーが残留していた部分には
静電潜像が残っているために、ただ機械的な撹乱と磁気
吸引力だけでは記録媒体1面における残留トナーの除去
を充分に行1よりせることかできない。
Therefore, in the cleaning device according to the present invention configured as described above, the magnetic toner 4 remaining on the surface of the recording medium after transfer is stripped off by the hairs of the IJ-brush 9 of the first roller 2; The magnetic toner 4 is attracted to the sleeve 9 side by the magnetic force of the magnetic pole 7. At that time, the magnetic toner 4 mechanically stripped off by the hair has an electric charge,
In addition, since an electrostatic latent image remains in the area on the surface of the recording medium where the magnetic toner remained, mechanical disturbance and magnetic attraction are not enough to remove the residual toner on the surface of the recording medium. It can only be set from line 1.

そのため本発明によるクリーニング装置では、スリーブ
9に直流電圧Eを印加することで帯電された磁性トナー
4に対してそn、をスリーブ9側に吸引するようなり−
ロンカが作用下るようにして、記録媒体1而のクリーニ
ングをより有効に行なわせるようにしている・なS1直
流′ぼ圧Eは、その印加によって磁性トナー4とスリー
ブ9との間に働くクーロン刀Faが磁性トナー4と記録
媒体1の潜像形成部との間に動くクーロン力Fbとは反
対方向に作用下るような極性でもって、しかも磁性トナ
ー4の帯電極性とは逆極性になる関係をもってスリーブ
9に印加される。丁なわち、反転現像の場合には記録媒
体1のプリチャージ電位とは逆極性の直流電圧Eをスリ
ーブ9に印加し、また正転現像の場合には記録媒体1の
プリチャージ電位と同極性の直流′電圧Eをスリーブ9
に印加するようにすればよい。また、直流電圧Eの大き
さは、Fa>FbKなるような関係をもって設定される
Therefore, in the cleaning device according to the present invention, by applying the DC voltage E to the sleeve 9, the charged magnetic toner 4 is attracted to the sleeve 9 side.
The direct current pressure E is a Coulomb force that acts between the magnetic toner 4 and the sleeve 9 when applied. Fa has a polarity such that it acts in the opposite direction to the Coulomb force Fb that moves between the magnetic toner 4 and the latent image forming portion of the recording medium 1, and has a polarity opposite to the charged polarity of the magnetic toner 4. is applied to sleeve 9. That is, in the case of reverse development, a DC voltage E of the opposite polarity to the precharge potential of the recording medium 1 is applied to the sleeve 9, and in the case of forward development, a DC voltage E of the same polarity as the precharge potential of the recording medium 1 is applied. DC' voltage E of sleeve 9
What is necessary is to apply it to . Further, the magnitude of the DC voltage E is set with a relationship such as Fa>FbK.

次いで、磁気力2よび電気力によってスリーブ9側に付
着した磁性トナー4が第1のローラ2の回転にともなっ
て第2の磁性体からなるローラ3に転移されたのち、ブ
レード5によってかき落され。
Next, the magnetic toner 4 attached to the sleeve 9 side by the magnetic force 2 and electric force is transferred to the second roller 3 made of magnetic material as the first roller 2 rotates, and then scraped off by the blade 5. .

て容器6に回収され1、その回収された磁性トナー4が
必要に応じ−C現像部にリサイクルされることになる。
The magnetic toner 4 is collected in a container 6, and the collected magnetic toner 4 is recycled to the -C developing section as required.

このように本発明によるクリーニング装置では、スリー
ブ9に植毛した繊維状の毛によって転写後に記録媒体1
面に残留する磁性トナー4をはぎとるとともに、磁気吸
引力2よび静電吸引力によって第1のローラ2 (Il
lに転移させるようにしているため、磁性トナー4を飛
散させることすく、また記録媒体1面を劣化させること
なくそのクリーニングを効果的に行なわせることができ
るようになる。また、@1のローラ2に付着した磁性ト
ナー4の後処理をも、第20ローラ32よびブレード5
の簡単な手段によって効率良く行なわせることができ、
不純物が混入されることすく、またトナーのブロッキン
グを何ら問題に下ることなくその回収を行γSわせるこ
とができるようにfjろ。
In this manner, in the cleaning device according to the present invention, the fibrous hairs implanted in the sleeve 9 clean the recording medium 1 after transfer.
The magnetic toner 4 remaining on the surface is removed, and the first roller 2 (Il
Since the magnetic toner 4 is transferred to L, it is possible to prevent the magnetic toner 4 from scattering and to effectively clean the recording medium 1 surface without deteriorating it. Also, the post-processing of the magnetic toner 4 adhering to the roller 2 of @1 is carried out by the 20th roller 32 and the blade 5.
It can be done efficiently by simple means,
fj so that impurities can be prevented from being mixed in, and the toner can be recovered without causing any problems with toner blocking.

yzg、本発明によるクリーニング装置では前記実施例
のものに何ら限定さ石、ろものではなく、例えば第1の
ローラ2におけろスミ1−ブ9として繊維状の毛を植毛
したものを用いなくとも、それを単なる薄肉の円筒状の
ものとして一1t4.磁力のみによって記録媒体1面の
クリーニングを行なわせるようにしても有効である。
yzg, the cleaning device according to the present invention is not limited to those of the above-mentioned embodiments, and does not use stones or filters, for example, in the first roller 2, as the filter 1-9, fibrous bristles are not used. However, if we assume that it is just a thin cylindrical shape, we can calculate it as 11t4. It is also effective to clean one surface of the recording medium using only magnetic force.

以上、本発明によるクリーニング装置にあっては、静電
記号式または電子写真式の転写形の画像記・鎌装置に8
いて、記録媒体に対向して設けられて回転するマグロー
ラの周囲に非磁性体の導電性をもったスリーブを被覆し
、かつそのスリーブに記録媒体面に残留する磁性トナー
をクーロン力によって吸引下るような直流電圧が印加さ
れた@1のローラと、その@lのローラと接触して回転
する磁性体からなる第2のローラと、その第2のローラ
に付着する磁性トナーをかき落丁ブレードとを設けるこ
とによって構成されたもので、簡単な構成により転写後
に記号媒体面に残留する磁性トナーを効率良くクリーニ
ングさせろことができるという優n、た利点をイイして
いる。
As described above, in the cleaning device according to the present invention, an electrostatic symbol type or an electrophotographic transfer type image recording/scythe device is used.
A non-magnetic conductive sleeve is coated around a rotating mag roller which is provided facing the recording medium, and the magnetic toner remaining on the surface of the recording medium is attracted to the sleeve by Coulomb force. A roller @1 to which a direct current voltage is applied, a second roller made of a magnetic material that rotates in contact with the roller @l, and a scraping blade that scrapes off the magnetic toner adhering to the second roller. It has the advantage that the magnetic toner remaining on the surface of the symbol medium after transfer can be efficiently cleaned with a simple structure.

【図面の簡単な説明】[Brief explanation of the drawing]

図&11本発明によるクリーニング装置の一実施例を示
す簡略構成図である。 1・−・記@媒体 2・・・第1のローラ 3・・・第
2のローラ 4・・・磁性トナー 5・・・ブレード6
・・・容器 7・・・磁極 8・・・マグローラ 9・
・・スリーブ 出願人代理人 鳥 井   清
FIG. 11 is a simplified configuration diagram showing an embodiment of the cleaning device according to the present invention. 1.--Note@medium 2..First roller 3..Second roller 4..Magnetic toner 5..Blade 6
...Container 7...Magnetic pole 8...Mag roller 9.
...Sleeve applicant agent Kiyoshi Torii

Claims (1)

【特許請求の範囲】[Claims] 静電記録式または電子写真式の転写形の画像記録装置に
Bいて、記録媒体に対向して設けられて回転するマグロ
ーラの周囲に非磁性体の導電性をもったスリーブを被覆
し、かつそのスリーブにa己録媒体面に残留する磁性ト
ナーをクーロン力によって吸引するような直流電圧が印
加された第10ローラと、その第1のローラと接触して
回転する磁性体からなる第2のローラと、その第2のロ
ーラに付着する磁性トナーをかき落丁ブレードとを設け
ることによって構成されたクリーニング装置。
In an electrostatic recording type or electrophotographic transfer type image recording device B, a non-magnetic conductive sleeve is coated around a rotating mag roller that is disposed opposite to a recording medium, and A tenth roller to which a DC voltage is applied to the sleeve to attract magnetic toner remaining on the surface of the recording medium by Coulomb force, and a second roller made of a magnetic material that rotates in contact with the first roller. and a scraping blade for scraping off magnetic toner adhering to the second roller.
JP12383581A 1981-08-07 1981-08-07 Cleaning device Pending JPS5825681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12383581A JPS5825681A (en) 1981-08-07 1981-08-07 Cleaning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12383581A JPS5825681A (en) 1981-08-07 1981-08-07 Cleaning device

Publications (1)

Publication Number Publication Date
JPS5825681A true JPS5825681A (en) 1983-02-15

Family

ID=14870549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12383581A Pending JPS5825681A (en) 1981-08-07 1981-08-07 Cleaning device

Country Status (1)

Country Link
JP (1) JPS5825681A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61272207A (en) * 1985-05-28 1986-12-02 Nippon Paint Co Ltd Blocked acylisocyanate group-containing polymer and production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61272207A (en) * 1985-05-28 1986-12-02 Nippon Paint Co Ltd Blocked acylisocyanate group-containing polymer and production thereof

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