JPH04333069A - Image recorder - Google Patents
Image recorderInfo
- Publication number
- JPH04333069A JPH04333069A JP10413491A JP10413491A JPH04333069A JP H04333069 A JPH04333069 A JP H04333069A JP 10413491 A JP10413491 A JP 10413491A JP 10413491 A JP10413491 A JP 10413491A JP H04333069 A JPH04333069 A JP H04333069A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- image
- toner
- transfer roller
- electrode
- 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
Links
- 230000003068 static effect Effects 0.000 claims description 14
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims 2
- 238000004140 cleaning Methods 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000004907 flux Effects 0.000 description 5
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229930182556 Polyacetal Natural products 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000006223 plastic coating Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は導電性トナーを用いて、
記録部材上にトナー画像を形成し、トナー画像を記録紙
上にローラにより転写する画像記録装置に関する。[Industrial Application Field] The present invention uses conductive toner to
The present invention relates to an image recording apparatus that forms a toner image on a recording member and transfers the toner image onto recording paper using a roller.
【0002】0002
【従来の技術】従来、円筒状記録部材と、その部材に微
少距離離間して複数の記録電極針からなる記録電極を配
し、記録部材とその記録電極先端で構成される領域(記
録領域)に導電性磁性トナーを供給し、磁界発生手段に
より、記録電極針と記録部材間にトナーを整列させ導電
路を形成し、記録電極針に画像信号に応じて記録電圧を
印加することで、トナーの顕画像を形成する画像記録装
置において、記録部材上のトナーを記録部材に押圧する
ように設けられた転写ローラにより記録紙上に転写する
装置が知られている。このような画像記録装置は、たと
えば特開昭60−260351号公報に記載されている
。[Prior Art] Conventionally, a cylindrical recording member and a recording electrode consisting of a plurality of recording electrode needles are arranged on the member at a small distance, and an area (recording area) constituted by the recording member and the tip of the recording electrode. By supplying conductive magnetic toner to the recording electrode needle, aligning the toner with a magnetic field generating means to form a conductive path between the recording electrode needle and the recording member, and applying a recording voltage to the recording electrode needle according to the image signal, the toner is 2. Description of the Related Art Among image recording apparatuses that form visible images, there is known an apparatus in which toner on a recording member is transferred onto recording paper using a transfer roller provided to press the toner against the recording member. Such an image recording apparatus is described in, for example, Japanese Patent Laid-Open No. 60-260351.
【0003】0003
【発明が解決しようとする課題】上記従来技術、特開昭
60−260351号公報では、転写ローラの加圧力,
材質については記述がない。ローラ転写方式により高転
写効率を得るために、ローラを1mm2 当たり5N以
上の高い押圧力で押圧する必要がある。そのため押圧に
よりローラが変形して接触面積が広がるのを押さえる硬
度の高い、かつ、押圧により記録部材を痛めないローラ
材質を選択する必要があり、記録方式は異なるが、特開
昭57−501348号公報に開示されているように金
属ローラに応力吸収性のプラスチック被膜を施したもの
が好ましい。しかし、プラスチック被膜ローラは、低湿
時に帯電し静電気力による力をトナーが受けるためにト
ナーが再現性よく記録紙上に転写されずに画像のぼけを
生じるという欠点があった。[Problems to be Solved by the Invention] In the above-mentioned prior art, Japanese Patent Application Laid-Open No. 60-260351, the pressing force of the transfer roller,
There is no description of the material. In order to obtain high transfer efficiency using the roller transfer method, it is necessary to press the roller with a high pressing force of 5N or more per 1 mm2. Therefore, it is necessary to select a roller material that has high hardness to prevent the roller from deforming and expanding the contact area due to pressure, and which does not damage the recording member due to pressure. A metal roller coated with a stress-absorbing plastic coating is preferred as disclosed in the publication. However, the plastic coated roller has the disadvantage that the toner is not transferred onto the recording paper with good reproducibility and the image is blurred because it is charged at low humidity and the toner is subjected to electrostatic force.
【0004】本発明の目的は、転写ローラの帯電を取り
除き記録部材上のトナーが再現性良く記録用紙上に転写
され、高画質でぼけのない画像記録装置を提供すること
にある。SUMMARY OF THE INVENTION An object of the present invention is to provide an image recording apparatus in which the toner on a recording member is transferred onto recording paper with good reproducibility by removing the charge on the transfer roller, and the image quality is high and there is no blur.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明は複数の電極針を記録部材の移動方向に直角
に配列した記録電極と、前記記録電極と微小間隙部をも
ち移動する前記記録部材と、前記記録電極の移動方向上
流側に導電性磁性トナーを堆積するホッパと、前記記録
電極に記録すべき画像に対応した電圧を付与し前記記録
部材と接するトナー部を帯電させる駆動回路と、前記微
小間隙部に磁界を供給する磁界発生手段と、前記記録部
材に押圧され設けられた転写ローラの表面に接するよう
に除電部材を設けた。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a recording electrode in which a plurality of electrode needles are arranged perpendicularly to the moving direction of a recording member, and a recording electrode that moves with a minute gap between the recording electrode and the recording member. The recording member, a hopper that deposits conductive magnetic toner on the upstream side in the moving direction of the recording electrode, and a drive that applies a voltage corresponding to an image to be recorded to the recording electrode to charge the toner portion in contact with the recording member. A circuit, a magnetic field generating means for supplying a magnetic field to the minute gap, and a static eliminating member were provided so as to be in contact with the surface of the transfer roller that was pressed against the recording member.
【0006】また上記目的を達成するために、本発明は
複数の電極針を記録部材の移動方向に直角に配列した記
録電極と、前記記録電極と微小間隙部を設けて移動する
前記記録部材と、前記記録電極の該移動方向上流側に磁
性トナーを堆積するホッパと、前記記録電極に記録すべ
き画像に対応した電圧を付与し前記記録部材と接するト
ナー部を帯電させる駆動回路と、前記微小間隙部に磁界
を供給する磁界発生手段と、前記記録部材に押圧され配
されるその表面が導電性である転写ローラを該記録部材
と等電位となるように電気的に接続したものである。In order to achieve the above object, the present invention also provides a recording electrode in which a plurality of electrode needles are arranged perpendicularly to the moving direction of the recording member, and a recording member that moves with a minute gap provided between the recording electrode and the recording member. , a hopper for depositing magnetic toner on the upstream side of the recording electrode in the moving direction; a drive circuit for applying a voltage corresponding to an image to be recorded to the recording electrode to charge a toner portion in contact with the recording member; A magnetic field generating means for supplying a magnetic field to the gap, and a transfer roller whose surface is conductive and which is pressed against the recording member are electrically connected so as to have the same potential as the recording member.
【0007】[0007]
【作用】記録部材に押圧され設けられた転写ローラは、
記録用紙との摩擦により帯電するが、表面に接する除電
部材により除電され記録部材上のトナーは、ぼけを生じ
ることなく記録用紙上に転写される。[Operation] The transfer roller pressed against the recording member is
The toner is charged due to friction with the recording paper, but the charge is eliminated by the charge eliminating member in contact with the surface, and the toner on the recording member is transferred onto the recording paper without blurring.
【0008】また、記録部材と等電位となるように設け
られた導電性転写ローラは、低湿時においても帯電する
ことなく記録部材上のトナーをぼけることなく記録紙上
に転写することができる。[0008] Furthermore, the conductive transfer roller provided to have the same potential as the recording member can transfer the toner on the recording member onto the recording paper without becoming electrified or blurring even in low humidity conditions.
【0009】[0009]
【実施例】以下、本発明の一実施例を図1を用いて説明
する。[Embodiment] An embodiment of the present invention will be described below with reference to FIG.
【0010】図1は、本発明の画像記録装置を断面で示
した側面図である。FIG. 1 is a cross-sectional side view of an image recording apparatus according to the present invention.
【0011】以下実施例の構成について説明する。ホッ
パ6の中には導電性磁性トナー(以下トナーと略す)2
3が堆積し収納されており、最下部のトナーは記録部材
1に接している。The configuration of the embodiment will be explained below. Inside the hopper 6 is conductive magnetic toner (hereinafter abbreviated as toner) 2.
3 is accumulated and stored, and the lowest toner is in contact with the recording member 1.
【0012】スリーブ13は中空の非磁性体からなりホ
ッパ6内に回動可能に支持され、図示されない駆動機構
によって図中矢印c方向に回動する。The sleeve 13 is made of a hollow non-magnetic material and is rotatably supported within the hopper 6, and is rotated in the direction of arrow c in the figure by a drive mechanism (not shown).
【0013】磁界発生手段12はスリーブ13内に記録
装置本体に固定される永久磁石であり、例えば、飽和磁
束密度が約0.4T(四千ガウス)の日立金属株式会社
製のフェライト磁石YBM−2BDである。The magnetic field generating means 12 is a permanent magnet fixed to the main body of the recording apparatus within the sleeve 13, and is, for example, a ferrite magnet YBM- manufactured by Hitachi Metals, Ltd. with a saturation magnetic flux density of approximately 0.4 T (4,000 Gauss). It is 2BD.
【0014】記録電極5は、非磁性の絶縁体からなる電
極基板5a,電極基板5a上に図の面外方向に列状に並
んで配置される導電体からなる記録電極針5e,電極基
板5a上に配置され記録電極針5eに画像信号に応じて
記録電圧を印加する集積回路5d,集積回路5dを保護
する絶縁性非磁性材の保護部材5cと、電極基板5aに
固着されている熱電動性の良い非磁性材からなるヒート
シンク5bから構成される。The recording electrode 5 includes an electrode substrate 5a made of a non-magnetic insulator, recording electrode needles 5e made of a conductor arranged in a row on the electrode substrate 5a in a direction out of the plane of the figure, and an electrode substrate 5a. An integrated circuit 5d disposed above applies a recording voltage to the recording electrode needle 5e according to the image signal, a protective member 5c made of an insulating non-magnetic material that protects the integrated circuit 5d, and a thermoelectric component fixed to the electrode substrate 5a. The heat sink 5b is made of a non-magnetic material with good properties.
【0015】ドラム状の記録部材1は基体が、例えば、
アルミニウム合金等によりなる非磁性導体1a、表面が
、例えば、アルミニウムの陽極皮膜、また熱硬化性樹脂
の塗膜よりなる絶縁体1bで形成され、記録電極針5c
とおよそ20〜300μmの間隙部をもって設置される
。The drum-shaped recording member 1 has a base, for example,
A non-magnetic conductor 1a made of an aluminum alloy or the like, the surface of which is formed of an insulator 1b made of, for example, an anodic film of aluminum or a coating film of a thermosetting resin, and a recording electrode needle 5c.
It is installed with a gap of approximately 20 to 300 μm.
【0016】記録部材1は、図示されていない駆動機構
によって、記録電極針5eの列方向と直角である図に示
す矢印bの方向に回転する。The recording member 1 is rotated by a drive mechanism (not shown) in the direction of arrow b shown in the figure, which is perpendicular to the column direction of the recording electrode needles 5e.
【0017】無端ベルト3は、記録電極5に対して記録
方向下流側に、かつ、記録電極5と近接し、駆動ローラ
18と装置本体に固定され非磁性体から構成されるベル
トガイド20によって走行可能に支持され、また、テン
ショナ19によりたるむことなく張力が与えられて、図
示されていない駆動機構により回動する駆動ローラ18
によって図に示す矢印aの方向に走行する。The endless belt 3 is located on the downstream side of the recording electrode 5 in the recording direction and close to the recording electrode 5, and is run by a belt guide 20 made of a non-magnetic material and fixed to the drive roller 18 and the main body of the apparatus. A drive roller 18 is supported and tensioned without slack by a tensioner 19 and rotated by a drive mechanism (not shown).
The vehicle travels in the direction of arrow a shown in the figure.
【0018】第二の磁界発生手段11は、無端ベルト3
内に記録装置本体に対して固定される永久磁石であり、
例えば、飽和磁束密度が約0.4T の日立金属株式会
社製のフェライト磁石YBM−2BDであり、記録電極
針5eとホッパ6に磁束を供給し、磁界発生手段12と
同一磁極を対向させて配置される。第二の磁界発生手段
11の反記録電極側に設けられた磁性体22は、記録電
極5先端部から記録部材1に向かう方向に前記磁界発生
手段11から突出している。The second magnetic field generating means 11 includes an endless belt 3
It is a permanent magnet that is fixed to the recording device body within the
For example, the ferrite magnet YBM-2BD manufactured by Hitachi Metals, Ltd. has a saturation magnetic flux density of about 0.4 T, supplies magnetic flux to the recording electrode needle 5e and the hopper 6, and is arranged with the same magnetic pole facing the magnetic field generating means 12. be done. A magnetic body 22 provided on the opposite recording electrode side of the second magnetic field generating means 11 protrudes from the magnetic field generating means 11 in a direction from the tip of the recording electrode 5 toward the recording member 1.
【0019】第二の磁界発生手段11の記録方向下流側
には記録部材1に近接し、無端ベルト3内に記録装置本
体に対し固定され、記録部材1の回動方向に複数の磁極
をもつ非画像トナー除去磁石21が配置される。非画像
トナー除去磁石21は永久磁石であり、例えば、飽和磁
束密度が約0.4T の日立金属株式会社製のフェライ
ト磁石YBM−2BDであり記録部材1に面する側に少
なくとも二極以上の磁極をもち記録部材1上に磁界を供
給する。On the downstream side in the recording direction of the second magnetic field generating means 11, a magnetic field generating means 11 is located close to the recording member 1, is fixed to the recording apparatus main body within the endless belt 3, and has a plurality of magnetic poles in the rotating direction of the recording member 1. A non-image detoning magnet 21 is arranged. The non-image toner removal magnet 21 is a permanent magnet, for example, a ferrite magnet YBM-2BD manufactured by Hitachi Metals, Ltd. with a saturation magnetic flux density of about 0.4 T, and has at least two or more magnetic poles on the side facing the recording member 1. and supplies a magnetic field onto the recording member 1.
【0020】トナー搬送磁石24は非画像トナー除去磁
石21の記録方向下流側から駆動ローラ18の近くまで
無端ベルト3の内周に沿ってベルトガイド20上に固定
される。トナー搬送磁石24は無端ベルト3走行方向に
対して垂直に複数の磁極をもち、無端ベルト3上に磁束
を供給する。The toner conveying magnet 24 is fixed on the belt guide 20 along the inner circumference of the endless belt 3 from the downstream side in the recording direction of the non-image toner removing magnet 21 to near the drive roller 18. The toner conveying magnet 24 has a plurality of magnetic poles perpendicular to the running direction of the endless belt 3, and supplies magnetic flux onto the endless belt 3.
【0021】スクレーパ8は、一辺を無端ベルト3に接
し、他の一辺は記録電極5の頂部に図示されいない手段
で固定されている。The scraper 8 has one side in contact with the endless belt 3, and the other side is fixed to the top of the recording electrode 5 by means not shown.
【0022】回転ブレード7は、図示されていない駆動
機構によって矢印eの方向に回転する。The rotating blade 7 is rotated in the direction of arrow e by a drive mechanism (not shown).
【0023】記録部材1の外周には、記録用紙2を記録
部材1に押圧する転写ローラ4と、記録部材1上に一辺
を接する可撓性部材からなるクリーニングブレード15
と、クリーニングブレード15を支持する支持体14が
設けられている。On the outer periphery of the recording member 1, there are a transfer roller 4 that presses the recording paper 2 onto the recording member 1, and a cleaning blade 15 made of a flexible member that contacts the recording member 1 on one side.
A support body 14 that supports the cleaning blade 15 is provided.
【0024】転写ローラ4は、金属ローラ4aの表面に
プラスチック被膜4bを施したものでありプラスチック
の材質は、フッ素樹脂,ポリアセタール樹脂等のエンジ
ニアリングプラスチック、または、ポリアセタール樹脂
に数十%程度のフッ素樹脂を混入した合成樹脂により構
成されている。さらに転写ローラ4の表面に接触するよ
うにブラシ状の除電部材25を設けている。除電部材2
5は、記録部材1と記録部材用除電ブレード9と電気的
に接続させ、等電位となるようにしている。The transfer roller 4 is a metal roller 4a with a plastic coating 4b applied to the surface thereof, and the plastic material is an engineering plastic such as a fluororesin or a polyacetal resin, or a polyacetal resin with a fluororesin content of several tens of percent. It is made of synthetic resin mixed with. Furthermore, a brush-shaped static eliminating member 25 is provided so as to come into contact with the surface of the transfer roller 4. Static elimination member 2
Reference numeral 5 electrically connects the recording member 1 and the recording member neutralization blade 9 so that they are at equal potential.
【0025】排トナー受け17内には、図示されていな
い駆動機構により回動するブレード16が設置されてい
る。A blade 16 is installed within the discharge toner receiver 17 and is rotated by a drive mechanism (not shown).
【0026】クリーニングブレード15の記録方向下流
側には除電ブレード9が一辺を記録部材1に接して配置
される。除電ブレード支持体10は、除電ブレード9が
記録電極針5eの配列方向に常に一定圧力で一辺を記録
部材1に接するように配置される。A charge eliminating blade 9 is disposed downstream of the cleaning blade 15 in the recording direction with one side in contact with the recording member 1. The static eliminating blade support 10 is arranged such that the static eliminating blade 9 always contacts the recording member 1 on one side with a constant pressure in the direction in which the recording electrode needles 5e are arranged.
【0027】トナーホッパ6内に堆積されるトナー23
は磁界発生手段12によってスリーブ13上に吸引され
る。吸引されたトナー23は図中矢印c方向に回動する
スリーブ13によって記録電極先端に搬送され、記録部
材1上に堆積する。このため、ホッパ6内のトナー23
の量に関係無く、常に、十分な量のトナー23が記録電
極5の先端に供給可能となるので、トナー消費によるホ
ッパ6内のトナー233の堆積量の変化、あるいは、記
録電極針5bの配列方向のホッパ6内のトナー堆積量の
ばらつき等の影響が無く、記録電極5先端に供給される
トナー23の量が安定しており高画質が得られる。そし
て、記録部材1の回動によって生じるトナー搬送力及び
第二の磁界発生手段11によって発生させられる磁気吸
引力は、記録電極5と記録部材1との間隙部よりトナー
23を記録方向に安定に流出させる。Toner 23 deposited in toner hopper 6
is attracted onto the sleeve 13 by the magnetic field generating means 12. The sucked toner 23 is conveyed to the tip of the recording electrode by the sleeve 13 rotating in the direction of arrow c in the figure, and is deposited on the recording member 1. Therefore, the toner 23 in the hopper 6
Regardless of the amount of toner 233, a sufficient amount of toner 23 can always be supplied to the tip of the recording electrode 5, so that changes in the amount of toner 233 deposited in the hopper 6 due to toner consumption or the arrangement of the recording electrode needles 5b can be avoided. There is no influence of variations in the amount of toner deposited in the hopper 6 in different directions, and the amount of toner 23 supplied to the tip of the recording electrode 5 is stable, resulting in high image quality. The toner conveying force generated by the rotation of the recording member 1 and the magnetic attraction force generated by the second magnetic field generating means 11 stably move the toner 23 in the recording direction from the gap between the recording electrode 5 and the recording member 1. Let it flow.
【0028】このとき、駆動用の集積回路5dより、複
数の記録電極針5eに画像信号に応じた記録電圧を印加
し、間隙部に存在するトナー23に選択的に電荷を与え
、電荷が注入された帯電トナーは静電引力が発生し、記
録部材1上に付着し画像形成トナー23aとなる。At this time, the driving integrated circuit 5d applies a recording voltage according to the image signal to the plurality of recording electrode needles 5e, selectively charges the toner 23 existing in the gap, and charges are injected. Electrostatic attraction is generated in the charged toner, which adheres to the recording member 1 and becomes image forming toner 23a.
【0029】電荷が注入されない非画像トナーは、2つ
の力、トナー搬送力と磁気吸引力によって間隙部を通過
すると、第二の磁界発生手段11からの重力場に打ち勝
つ磁気吸引力によって、矢印gのように第二の磁界発生
手段11に向かって飛翔する。第二の磁界発生手段11
からの磁気吸引力に打ち勝ち記録部材1上に残った非画
像トナーは、第二の磁界発生手段11の記録方向下流側
に配置される非画像トナー除去磁石21が記録部材1上
に供給する交番磁界によって微小振動することで完全に
記録部材1上から取り除かれ、非画像トナー除去磁石2
1に向かって飛翔する。When the non-image toner into which no charge is injected passes through the gap by two forces, the toner transport force and the magnetic attraction force, the magnetic attraction force that overcomes the gravitational field from the second magnetic field generating means 11 causes the non-image toner to move in the direction of the arrow g. It flies toward the second magnetic field generating means 11 as shown in FIG. Second magnetic field generating means 11
The non-image toner remaining on the recording member 1 after overcoming the magnetic attraction from The non-image toner is completely removed from the recording member 1 by minute vibrations caused by the magnetic field, and the non-image toner is removed by the non-image toner removing magnet 2.
Fly towards 1.
【0030】飛翔した非画像トナー23bは、無端ベル
ト3上に第二の磁界発生手段11の磁気力、及びに非画
像トナー除去磁石21の磁気力によって吸引され、無端
ベルト3の走行によって矢印aの方向に搬送され、スク
レーパ8によってスクレーパ8上に移動し、ホッパ6内
に回収される。トナー搬送磁石24は非画像トナー23
bを無端ベルト3上に磁気力で保持し非画像トナー23
の落下を防ぐ。回転ブレード7は矢印eの方向に回転し
、非画像トナー23bのスクレーパ8上への搬送を促す
。The flying non-image toner 23b is attracted onto the endless belt 3 by the magnetic force of the second magnetic field generating means 11 and the magnetic force of the non-image toner removing magnet 21, and as the endless belt 3 runs, it moves in the direction of arrow a. It is conveyed in the direction of , moved onto the scraper 8 by the scraper 8 , and collected into the hopper 6 . The toner transport magnet 24 carries the non-image toner 23
b is held on the endless belt 3 by magnetic force, and the non-image toner 23 is
prevent from falling. The rotary blade 7 rotates in the direction of arrow e to urge the non-image toner 23b to be conveyed onto the scraper 8.
【0031】画像を形成する帯電トナー23aは、転写
ローラ4の押圧力により記録紙2上に転写され画像を形
成する。The charged toner 23a forming the image is transferred onto the recording paper 2 by the pressing force of the transfer roller 4 to form an image.
【0032】この時、転写ローラ4は、除電部材25に
より除電されているので記録部材1上のトナーは、ぼけ
を生じることなく記録用紙2上に転写される。At this time, since the transfer roller 4 has been neutralized by the static eliminating member 25, the toner on the recording member 1 is transferred onto the recording paper 2 without blurring.
【0033】ここで転写されずに記録部材1上に残った
非転写トナー23cは、クリーニングブレード15によ
って記録部材1上から除去され、重力により排トナー受
け17端部に落下し、さらにスクリュー16の回動によ
り排トナー受け17内部に堆積される。The non-transferred toner 23c remaining on the recording member 1 without being transferred is removed from the recording member 1 by the cleaning blade 15, falls to the end of the discharged toner receiver 17 due to gravity, and is further removed by the screw 16. Due to the rotation, the toner is deposited inside the discharged toner receiver 17.
【0034】クリーニングブレード15の記録方向下流
側で一辺を記録部材1に接して配置される除電ブレード
9は、画像を形成する帯電トナー23aから電荷を受け
取り画像を形成する帯電トナー23aが転写された後も
残留電位をもつ記録部材1の誘電層1aから残留電位を
取り除き、画像トナー23a除電ブレード支持体10は
、除電ブレード9が記録電極針5eの配列方向に常に一
定圧力で一辺を記録部材1に接するように配置される。The charge eliminating blade 9, which is disposed on the downstream side of the cleaning blade 15 in the recording direction with one side in contact with the recording member 1, receives charges from the charged toner 23a forming the image, and the charged toner 23a forming the image is transferred. After that, the residual potential is removed from the dielectric layer 1a of the recording member 1, which still has a residual potential, and the image toner 23a is removed from the static elimination blade support 10. It is placed so that it is in contact with the
【0035】図2は、本発明の他の実施例の画像記録装
置を断面図である。本実施例では、転写ローラ4は、金
属ローラ4aと導電性プラスチック被膜4bとからなり
金属ローラ4の部分が、記録部材1と除電ブレード9と
等電位となっている。このため、転写ローラ4は、帯電
することなく転写時に記録部材1上のトナー画像を乱す
ことなく記録用紙2上に転写することができる。FIG. 2 is a sectional view of an image recording apparatus according to another embodiment of the present invention. In this embodiment, the transfer roller 4 is composed of a metal roller 4a and a conductive plastic film 4b, and the portion of the metal roller 4 is at the same potential as the recording member 1 and the neutralizing blade 9. Therefore, the transfer roller 4 can transfer the toner image onto the recording paper 2 without disturbing the toner image on the recording member 1 during transfer without being charged.
【0036】[0036]
【発明の効果】本発明によれば、転写ローラが帯電する
ことなく記録部材上のトナー画像を乱すことなく記録用
紙上に転写することができるので、高画質の画像が得ら
れる。According to the present invention, the toner image on the recording member can be transferred onto the recording paper without being electrically charged and without disturbing the toner image on the recording member, so that a high quality image can be obtained.
【図1】本発明の一実施例の断面図。FIG. 1 is a sectional view of an embodiment of the present invention.
【図2】本発明の他の実施例の断面図。FIG. 2 is a sectional view of another embodiment of the invention.
1…記録部材、2…記録紙、3…無端ベルト、4…転写
ローラ、5…記録電極、6…ホッパ、9…除電ブレード
、11…磁界発生手段、12…磁界発生手段、22…磁
性体、23…導電性磁性トナー、25…除電部材。DESCRIPTION OF SYMBOLS 1... Recording member, 2... Recording paper, 3... Endless belt, 4... Transfer roller, 5... Recording electrode, 6... Hopper, 9... Static elimination blade, 11... Magnetic field generating means, 12... Magnetic field generating means, 22... Magnetic body , 23... Conductive magnetic toner, 25... Static elimination member.
Claims (3)
電極と、前記記録電極と微小の間隙部をもって回動する
円筒状あるいは円柱状の記録部材と、前記記録電極の前
記記録部材移動方向上流側に導電性磁性トナーを供給す
る手段と、前記記録電極の配列方向に設けられ、静磁界
を発生する磁界発生手段と、前記記録部材に押圧され設
けられた転写ローラとを備え、前記記録電極針に画像信
号に応じて前記記録電圧を印加することで、前記記録部
材の移動によって前記間隙部を通過する前記導電性磁性
トナーに選択的に電荷を与え帯電したトナーの顕画像を
得、前記顕画像を前記転写ローラにより記録用紙上に転
写する画像記録装置において、前記転写ローラの表面に
接触するように除電部材を設けたことを特徴とする画像
記録装置。1. A recording electrode in which a plurality of recording electrode needles are arranged in a row; a cylindrical or cylindrical recording member that rotates with a minute gap between the recording electrode; and the recording member of the recording electrode. comprising means for supplying conductive magnetic toner on the upstream side in the moving direction, magnetic field generating means provided in the arrangement direction of the recording electrodes and generating a static magnetic field, and a transfer roller provided pressed against the recording member, By applying the recording voltage to the recording electrode needle according to the image signal, the conductive magnetic toner passing through the gap is selectively charged by the movement of the recording member, and a microscopic image of the charged toner is created. An image recording apparatus in which the visible image is transferred onto a recording sheet by the transfer roller, further comprising a charge eliminating member provided in contact with a surface of the transfer roller.
電極と、前記記録電極と微小の間隙部を有して回動する
円筒状あるいは円柱状の記録部材と、前記記録電極の前
記記録部材移動方向上流側に導電性磁性トナーを供給す
る手段と、前記記録電極の配列方向に設けられ、静磁界
を発生する磁界発生手段と、前記記録部材に押圧され設
けられた転写ローラとを備え、前記記録電極針に画像信
号に応じて前記記録電圧を印加することで、前記記録部
材の移動によって前記間隙部を通過する前記導電性磁性
トナーに選択的に電荷を与え帯電したトナーの顕画像を
得、前記顕画像を前記転写ローラにより記録用紙上に転
写する画像記録装置において、前記転写ローラの表面に
接触するように除電部材を設け前記除電部材は、前記記
録部材と等電位としたことを特徴とする画像記録装置。2. A recording electrode in which a plurality of recording electrode needles are arranged in a row, a cylindrical or cylindrical recording member that rotates with a minute gap between the recording electrode and the recording electrode; a means for supplying conductive magnetic toner to an upstream side in a moving direction of the recording member; a magnetic field generating means provided in the arrangement direction of the recording electrodes and generating a static magnetic field; and a transfer roller provided pressed against the recording member. By applying the recording voltage to the recording electrode needle according to the image signal, the conductive magnetic toner passing through the gap is selectively charged by the movement of the recording member, and the charged toner is charged. In an image recording apparatus that obtains a visual image and transfers the visual image onto a recording sheet using the transfer roller, a static eliminating member is provided in contact with a surface of the transfer roller, and the static eliminating member has an equal potential with the recording member. An image recording device characterized by:
電極と、前記記録電極と微小の間隙部を有して回動する
円筒状あるいは円柱状の記録部材と、前記記録電極の前
記記録部材移動方向上流側に導電性磁性トナーを供給す
る手段と、前記記録電極の配列方向に設けられ、静磁界
を発生する磁界発生手段と、前記記録部材に押圧され設
けられた転写ローラとを備え、前記記録電極針に画像信
号に応じて記録電圧を印加することで、前記記録部材の
移動によって前記間隙部を通過する前記導電性磁性トナ
ーに選択的に電荷を与え帯電したトナーの顕画像を得、
前記顕画像を前記転写ローラにより記録用紙上に転写す
る画像記録装置において、前記転写ローラの表面が導電
性部材よりなり、前記転写ローラを前記記録部材と等電
位となるように電気的に接続したことを特徴とする画像
記録装置。3. A recording electrode in which a plurality of recording electrode needles are arranged in a row, a cylindrical or cylindrical recording member that rotates with a minute gap between the recording electrode and the recording electrode; a means for supplying conductive magnetic toner to an upstream side in a moving direction of the recording member; a magnetic field generating means provided in the arrangement direction of the recording electrodes and generating a static magnetic field; and a transfer roller provided pressed against the recording member. By applying a recording voltage to the recording electrode needle according to the image signal, the conductive magnetic toner passing through the gap is selectively charged by the movement of the recording member, and the charged toner is exposed. get the image,
In an image recording device that transfers the visible image onto a recording paper using the transfer roller, the surface of the transfer roller is made of a conductive member, and the transfer roller is electrically connected to the recording member so as to have an equal potential. An image recording device characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10413491A JPH04333069A (en) | 1991-05-09 | 1991-05-09 | Image recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10413491A JPH04333069A (en) | 1991-05-09 | 1991-05-09 | Image recorder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04333069A true JPH04333069A (en) | 1992-11-20 |
Family
ID=14372636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10413491A Pending JPH04333069A (en) | 1991-05-09 | 1991-05-09 | Image recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04333069A (en) |
-
1991
- 1991-05-09 JP JP10413491A patent/JPH04333069A/en active Pending
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