JPS61267773A - Device for removing unnecessary toner - Google Patents

Device for removing unnecessary toner

Info

Publication number
JPS61267773A
JPS61267773A JP60110693A JP11069385A JPS61267773A JP S61267773 A JPS61267773 A JP S61267773A JP 60110693 A JP60110693 A JP 60110693A JP 11069385 A JP11069385 A JP 11069385A JP S61267773 A JPS61267773 A JP S61267773A
Authority
JP
Japan
Prior art keywords
toner
recording
drum
latent image
recording medium
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
JP60110693A
Other languages
Japanese (ja)
Inventor
Kazunori Hirose
和則 広瀬
Akira Nakai
中井 昭
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP60110693A priority Critical patent/JPS61267773A/en
Publication of JPS61267773A publication Critical patent/JPS61267773A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To remove excess toner precisely by a simple and small-sized device and to attain highly accurate recording free from dirt on its background part by applying an electric field to the excess toner on a recording medium by an insulating member stored in an electric charge means. CONSTITUTION:A corona discharger 13 consisting of a corona wire 11 and a metal frame 17 is stored in a Mylar-made insulating drum 22 of an unnecessary toner removing device 17. Electric charge having the polarity generating force to be adsorbed to the applied electric field is injected into toner 15, 16 by applying a corona discharge voltage between the corona wire 11 and a recording drum 14. Thereby, excess toner 16 adhered to a latent image with low restriction force or toner 15 adhered to the background part are sucked, recovered and scraped by a recovery blade 28. Thus, the unnecessary toner can be precisely removed by a simple and small-sized device and highly accurate recording free from dirt on its background can be attained.

Description

【発明の詳細な説明】 (概要〕 磁気記録ドラムの表面の記録媒体に付着した余分な磁性
トナーを電気的に除去して記録媒体の表面をクリーニン
グする小型で、構造が簡単な不要トナー除去装置。
[Detailed Description of the Invention] (Summary) A small, simple-structure unnecessary toner removal device that electrically removes excess magnetic toner adhering to the recording medium on the surface of a magnetic recording drum to clean the surface of the recording medium. .

〔産業上の利用分野〕[Industrial application field]

本発明は磁気記録装置に係り、特に記録装置の記録媒体
の表面に付着した不要な磁性トナーを除去する不要トナ
ー除去装置に関する。
The present invention relates to a magnetic recording device, and more particularly to an unnecessary toner removing device for removing unnecessary magnetic toner adhering to the surface of a recording medium of a recording device.

磁気記録媒体となる磁性体層を周囲に形成し、回転する
記録ドラムの前記磁気記録媒体に、磁気ヘッドを用いて
磁気潜像を形成し、この記録ドラムに近接して対向配置
されている現像ローラにより磁性トナーを搬送する。そ
してこの磁性トナーを前記磁気潜像に磁気的に吸着させ
て現像し、この現像されたトナー像を記録紙に転写記録
する磁気記録装置はノンインパクトプリンタとして電子
計算機の出力装置に利用されている。
A developing device that forms a magnetic layer around the magnetic recording medium that will become a magnetic recording medium, forms a magnetic latent image on the magnetic recording medium of a rotating recording drum using a magnetic head, and is disposed close to and facing the recording drum. Magnetic toner is conveyed by rollers. The magnetic recording device, which magnetically attracts this magnetic toner to the magnetic latent image and develops it, and transfers and records the developed toner image onto recording paper, is used as a non-impact printer in the output device of a computer. .

〔従来の技術〕[Conventional technology]

このような磁気記録装置に於いて、従来の不要トナー除
去装置を含んだ装置構成図を第3図に示す0図示するよ
うに表面に磁気記録媒体を形成した記録ドラム1の前記
磁気記録媒体を消磁ヘッド2を用いて記録媒体の厚さの
方向に対して垂直方向に一定の磁界を有するように磁化
する。
In such a magnetic recording device, a configuration diagram of the device including a conventional unnecessary toner removing device is shown in FIG. 3. As shown in FIG. The degaussing head 2 is used to magnetize the recording medium so that a constant magnetic field is applied in the direction perpendicular to the thickness direction of the recording medium.

次いでこの記録ドラム1を矢印A方向に沿って回転させ
、潜像形成ヘッド3のコイル4に印字信号に応じた励磁
電流を通電して、前記磁気記録媒体に潜像磁化パターン
を形成する。次いで現像装置5を用いて磁性トナーを磁
気記録媒体の潜像磁化パターンに搬送し、この潜像磁化
パターンにトナーを磁気的に付着させて現像を行う。
Next, this recording drum 1 is rotated along the direction of arrow A, and an excitation current is applied to the coil 4 of the latent image forming head 3 in accordance with a print signal to form a latent image magnetization pattern on the magnetic recording medium. Next, the developing device 5 is used to convey the magnetic toner to the latent image magnetization pattern of the magnetic recording medium, and the toner is magnetically attached to the latent image magnetization pattern to perform development.

更にこの現像時に磁気記録媒体に付着した余分なトナー
を、不要トナー除去装置6を用いて吸引除去し、更に転
写ローラ7を用いて記録媒体上の現像されたトナー像を
記録紙8に転写する。
Further, excess toner adhering to the magnetic recording medium during this development is removed by suction using an unnecessary toner removing device 6, and the developed toner image on the recording medium is further transferred to recording paper 8 using a transfer roller 7. .

更に記録ドラム1を矢印A方向に回転させ、記録ドラム
の表面に転写されずに残留しているトナーをクリーナ9
を用いて吸引除去する。
Further, the recording drum 1 is rotated in the direction of arrow A, and the toner remaining without being transferred to the surface of the recording drum is removed by a cleaner 9.
Remove by suction using

その後、この記録装置で、新たな情報を記録する場合は
消磁ヘッドを用いて記録媒体上の潜像を消去し、新たな
情報を記録しない時は、この消磁ヘッドを作動させない
ようにして、この潜像を用いて多数枚の記録紙に転写記
録する。
After that, when this recording device records new information, the latent image on the recording medium is erased using a degaussing head, and when new information is not recorded, this degaussing head is not activated. A latent image is used to transfer and record onto multiple sheets of recording paper.

上記した記録装置で、潜像形成箇所以外の背景部分に付
着した余分なトナーや、あるいは潜像形成箇所に過剰に
付着した余分なトナーを除去する従来の不要トナー除去
装置としては、送m器等を併用したフィルタ付きの吸引
装置等を使用していた。
In the above-mentioned recording apparatus, a conventional unnecessary toner removing device for removing excess toner adhering to the background area other than the latent image forming area or excess toner adhering excessively to the latent image forming area is the m-feeder. A suction device with a filter, etc. was used.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

然し、このような従来の不要トナー除去装置は送風器を
併用する必要があり、装置自体が大型になり、装置の設
置面積が大きくなり、従って記録装置全体が大型な装置
となる問題がある。更に送風器等を必要とするため大電
力を必要とする問題がある。
However, such a conventional unnecessary toner removing device requires the use of an air blower, which increases the size of the device itself, increases the installation area of the device, and therefore causes the problem that the entire recording device becomes a large device. Furthermore, since a blower and the like are required, there is a problem in that a large amount of electric power is required.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は上記した欠点を除去し、記録媒体上に付着した
余分な磁性トナーに、簡単な構造の装置で電界を印加す
ることにより、トナーに電荷を注入して、トナーを記録
媒体上より除去する不要トナー除去装置を提供するもの
である。
The present invention eliminates the above-mentioned drawbacks and removes the toner from the recording medium by applying an electric field to the excess magnetic toner adhering to the recording medium using a device with a simple structure, thereby injecting charge into the toner. The present invention provides an unnecessary toner removing device.

本発明の不要トナー除去装置17ば、マイラーのような
絶縁性樹脂で形成されたドラム22と、このドラム22
内に設置したコロナ放電器13からなり、記録ドラム1
4の回転方向に沿って現像装置の次の位置に設置される
The unnecessary toner removing device 17 of the present invention includes a drum 22 made of an insulating resin such as Mylar;
It consists of a corona discharger 13 installed inside the recording drum 1.
4 is installed at the next position of the developing device along the rotation direction.

〔作用) 本発明の不要トナー除去装置は、コロナ放電器13によ
り絶縁性ドラム22を帯電させ、この電界により記録媒
体18上に付着している不要なトナーに、電界を加えて
導電性の記録媒体1日から、加えられる電界によって吸
引力を発生する極性の電荷を注入し、潜像に付着してい
るトナーのうち、潜像からの拘束力の弱い過剰付着のト
ナー16や、潜像形成箇所以外の背景部分に付着してい
る拘束力の弱いトナー15を、これらの弱い拘束力より
も強い電界の力で吸引回収するようにしたものである。
[Function] The unnecessary toner removing device of the present invention charges the insulating drum 22 with the corona discharger 13, and applies an electric field to the unnecessary toner adhering to the recording medium 18 to form a conductive recording. Polar charges that generate an attractive force are injected into the medium from the first day onward by an applied electric field, and among the toners adhering to the latent image, excessive adhering toner 16 with a weak binding force from the latent image and latent image formation are removed. Toner 15 having a weak binding force adhering to background parts other than the spots is suctioned and collected by the force of the electric field which is stronger than the weak binding force.

〔実施例〕〔Example〕

以下、図面を用いながら本発明の一実施例につき詳細に
説明する。
Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

前記した第1図の本発明の不要トナー除去装置の模式図
を用いて更に詳細に説明する。
This will be explained in more detail using the above-described schematic diagram of the unnecessary toner removing device of the present invention shown in FIG.

図示するように矢印B方向に・示す記録ドラムの回転方
向に沿って、現像装置(図示せず)の次の位置に不要ト
ナー除去装置が設置されている。
As shown in the figure, an unnecessary toner removing device is installed at a position next to a developing device (not shown) along the rotational direction of the recording drum shown in the direction of arrow B.

図示するように記録ドラム14の表面に形成されている
磁気記録媒体1日に前記第3図に示した潜像形成ヘッド
3により潜像磁化パターン19が形成されている。現像
装置(図示せず)を通過した磁気記録媒体18の潜像磁
化パターン19上ではトナー16が磁気的な吸着力で付
着し、非潜像磁化パターン21上ではトナー15がファ
ンデルワールス力等の吸着力で付着している。
As shown, a latent image magnetization pattern 19 is formed on the magnetic recording medium 1 on the surface of the recording drum 14 by the latent image forming head 3 shown in FIG. The toner 16 adheres to the latent image magnetization pattern 19 of the magnetic recording medium 18 that has passed through a developing device (not shown) by magnetic adsorption force, and the toner 15 adheres to the non-latent image magnetization pattern 21 by van der Waals force, etc. It is attached by the adsorption force of.

更に現像されたトナー像、並びに現像されなかった不要
なトナーは本発明の不要トナー除去装置17に導かれる
Further, the developed toner image and undeveloped unnecessary toner are led to the unnecessary toner removing device 17 of the present invention.

この装置17は前記したように、コロナワイヤ11と金
属フレーム12よりなるコロナ放電器13とその周囲に
設置されているマイラー製の絶縁性ドラム22とよりな
る。この絶縁性ドラム22はドラムの表面を挟んで対向
する一対の回転体23.24によって矢印C方向に沿っ
て記録ドラム14の周囲を連続的に周回移動する。
As described above, this device 17 consists of a corona discharger 13 made of a corona wire 11 and a metal frame 12, and an insulating drum 22 made of Mylar installed around the corona discharger 13. This insulating drum 22 is continuously moved around the recording drum 14 in the direction of arrow C by a pair of rotating bodies 23 and 24 facing each other with the surface of the drum in between.

コロナワイヤ11と記録ドラム14の間には、コロナ放
電電圧が印加されており、記録媒体18上のトナー15
.16がコロナ放電器13の金属フレーム12の開口部
25の位置に入ると、トナー15.16は記録ドラム1
4とコロナワイヤ11との間の印加電界によって、この
印加電界に吸着される力が発生する極性の電荷が注入さ
れる。この場合、コロナ放電器より発生したコロナイオ
ン26は、絶縁性ドラム22の裏面側に飛来するととも
にトナー15.16に注入され、余分なコロナイオン2
6が記録ドラム14のアース側に矢印り方向に沿って移
行する。
A corona discharge voltage is applied between the corona wire 11 and the recording drum 14, and the toner 15 on the recording medium 18 is
.. 16 enters the opening 25 of the metal frame 12 of the corona discharger 13, the toner 15.16 is transferred to the recording drum 1.
4 and the corona wire 11, a polar charge is injected which generates a force that is attracted to the applied electric field. In this case, corona ions 26 generated from the corona discharger fly to the back side of the insulating drum 22 and are injected into the toner 15, 16, resulting in excess corona ions 26.
6 moves to the ground side of the recording drum 14 along the direction of the arrow.

そして記録媒体18に対して付着力の弱い非潜像磁化パ
ターン21上でのトナー15や、潜像に弱い拘束力で付
着している潜像磁化パターン19上での過剰なトナー1
6が電界力に吸引されてコロナワイヤ11と記録媒体1
8間に位置するマイラー製の絶縁性ドラム22上に付着
する。
The toner 15 on the non-latent image magnetized pattern 21 which has a weak adhesion force to the recording medium 18 and the excessive toner 1 on the latent image magnetized pattern 19 which has a weak binding force on the latent image.
6 is attracted by the electric field force and connects the corona wire 11 and the recording medium 1.
It is attached onto an insulating drum 22 made of Mylar located between 8 and 8.

この時コロナワイヤ11側からコロナイオン26が絶縁
性ドラム22の裏側に飛来し付着するので開口部25を
外れた位置で、絶縁性ドラム22の内部に設置され、一
端が設置されている導電製のブレード27で前記コロナ
イオン26を除電する。それと同時に絶縁性ドラム22
の表面に設置された導電性のブレード28でドラム22
の表面に付着されたトナー29を除電した後、掻き落と
して回収する。
At this time, corona ions 26 fly from the corona wire 11 side and adhere to the back side of the insulating drum 22, so a conductive wire 26 is installed inside the insulating drum 22 at a position outside the opening 25, and one end is installed. The corona ions 26 are neutralized by a blade 27 . At the same time, the insulating drum 22
A conductive blade 28 placed on the surface of the drum 22
After the toner 29 attached to the surface of the toner 29 is neutralized, it is scraped off and collected.

このようにして本発明の不要トナー除去装置によって記
録媒体の潜像磁化パターンに付着した余分なトナーや、
非潜像磁化パターンに付着した不要なトナーが除去され
るので、本発明の不要トナー除去装置を通過した記録媒
体上には、背景部分に汚れを生じない、高精細なトナー
像が得られる。
In this way, the unnecessary toner removal device of the present invention removes excess toner that has adhered to the latent image magnetization pattern of the recording medium.
Since the unnecessary toner adhering to the non-latent image magnetization pattern is removed, a high-definition toner image without staining the background portion can be obtained on the recording medium that has passed through the unnecessary toner removing device of the present invention.

ここで第2図に本発明の不要トナー除去装置を用いた場
合に於いて、コロナ放電器に印加した電圧と印字記録さ
れた背景の部分の濃度(0,0,)との関係を図示する
。図において縦軸は印字記録された背景の部分の濃度(
0,0,)を示し、横軸にはコロナ放電器に印加される
電圧値を示す。
Here, FIG. 2 illustrates the relationship between the voltage applied to the corona discharger and the density (0, 0,) of the printed background portion when the unnecessary toner removing device of the present invention is used. . In the figure, the vertical axis is the density (
0,0,), and the horizontal axis shows the voltage value applied to the corona discharger.

図示するようにコロナ放電器に印加する電圧値を3.5
KV以上に保つと文字が印字されている背景の濃度は0
.05(0,0,)と低下し、充分実用になることが確
認できた。
As shown in the figure, the voltage value applied to the corona discharger is 3.5
If you keep it above KV, the density of the background where characters are printed will be 0.
.. It was confirmed that the value decreased to 0.05 (0, 0,), which is sufficient for practical use.

尚、以上の実施例では絶縁性ドラム22を不要トナーM
表装置17に用いたが、エンドレスのシート状の絶縁性
部材を記録ドラム14に近接して設置し、そのシートの
下部にコロナ放電器を設置したた構造をとっても良い。
Incidentally, in the above embodiment, the insulating drum 22 is unnecessary and the toner M
Although it is used in the recording device 17, it is also possible to adopt a structure in which an endless sheet-like insulating member is installed close to the recording drum 14, and a corona discharger is installed at the bottom of the sheet.

またコロナ放電器13に代えて摩擦ローラを用いて、絶
縁性ドラム22を帯電させても同様の効果を得ることが
できる。
Further, the same effect can be obtained by charging the insulating drum 22 by using a friction roller instead of the corona discharger 13.

〔発明の効果〕〔Effect of the invention〕

以上述べたように本発明の不要トナー除去装置によれば
、潜像磁化パターン上に付着した余分なトナーや、非潜
像磁化パターンに付着した不要なトナーが除去されるの
で、磁気記録媒体上に背景部分に汚れを住じない高精細
なトナー像が現像されるので、これを記録紙に転写した
時、背景部分に汚れを生じない高精細な印字記録が行い
得る効果がある。
As described above, according to the unnecessary toner removing device of the present invention, excess toner adhering to the latent image magnetization pattern and unnecessary toner adhering to the non-latent image magnetization pattern are removed, so that unnecessary toner adhering to the magnetic recording medium is removed. Since a high-definition toner image is developed that does not cause stains in the background area, when this is transferred to recording paper, it is possible to perform high-definition print recording without stains in the background area.

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

第1図は本発明の不要トナー除去装置を示す模式図、 第2図は本発明の装置を用いた場合のコロナ放電器の印
加電圧と印字の背景部の濃度との関係図、第3図は従来
の不要トナー除去装置を含む磁気記録装置の装置構成図
である。 図に於いて、 11はコロナワイヤ、12は金属フレーム、13はコロ
ナ放電器、14は記録ドラム、15.16.29はトナ
ー、17は不要トナー除去装置、18は記録媒体、19
は潜像磁化パターン、21は非潜像磁化パターン、22
は絶縁性ドラム、23.24は回転体、25は開口部、
26はコロナイオン、27.28はブレード、Bは記録
ドラムの移動方向を示す矢印、Cは絶縁性ドラムの回転
方向を示す矢印、Dはコロナイオンの移動方向を示す矢
印である。 ント屓トvJipイi艶トナーP幹と装置碑孝更デごC
ゴ第1図 182  図
Fig. 1 is a schematic diagram showing the unnecessary toner removing device of the present invention, Fig. 2 is a diagram of the relationship between the applied voltage of the corona discharger and the density of the background area of printing when the device of the present invention is used, and Fig. 3 1 is a device configuration diagram of a magnetic recording device including a conventional unnecessary toner removing device. In the figure, 11 is a corona wire, 12 is a metal frame, 13 is a corona discharger, 14 is a recording drum, 15, 16, 29 is a toner, 17 is an unnecessary toner removal device, 18 is a recording medium, 19
is a latent image magnetization pattern, 21 is a non-latent image magnetization pattern, 22
is an insulating drum, 23, 24 is a rotating body, 25 is an opening,
26 is a corona ion, 27 and 28 are blades, B is an arrow indicating the moving direction of the recording drum, C is an arrow indicating the rotating direction of the insulating drum, and D is an arrow indicating the moving direction of the corona ion. The main body and device are the glossy toner P and the device.
Figure 1 182

Claims (2)

【特許請求の範囲】[Claims] (1)記録ドラム(14)上の記録媒体(18)に潜像
を形成し、該潜像にトナーを被着させる記録装置に於い
て、 前記記録媒体(18)に対向し、かつ絶縁性部材(22
)を介して帯電手段(13)を設け、該帯電手段(13
)で絶縁性部材を帯電させることにより、記録媒体(1
8)上の不要なトナー(15、16)を絶縁性部材(2
2)上に付着するようにしたことを特徴とする不要トナ
ー除去装置。
(1) In a recording device that forms a latent image on a recording medium (18) on a recording drum (14) and applies toner to the latent image, the recording device faces the recording medium (18) and is insulating. Parts (22
), and a charging means (13) is provided via the charging means (13).
) by charging the insulating member with the recording medium (1
8) Remove unnecessary toner (15, 16) on the insulating member (2)
2) An unnecessary toner removing device characterized in that the unnecessary toner is attached to the top.
(2)前記絶縁性部材(22)の表裏両面に、それぞれ
接地されたブレード(27、28)を設けたことを特徴
とする特許請求の範囲第(1)項に記載の不要トナー除
去装置。
(2) The unnecessary toner removing device according to claim (1), characterized in that blades (27, 28) which are grounded are provided on both the front and back surfaces of the insulating member (22).
JP60110693A 1985-05-22 1985-05-22 Device for removing unnecessary toner Pending JPS61267773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60110693A JPS61267773A (en) 1985-05-22 1985-05-22 Device for removing unnecessary toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60110693A JPS61267773A (en) 1985-05-22 1985-05-22 Device for removing unnecessary toner

Publications (1)

Publication Number Publication Date
JPS61267773A true JPS61267773A (en) 1986-11-27

Family

ID=14542056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60110693A Pending JPS61267773A (en) 1985-05-22 1985-05-22 Device for removing unnecessary toner

Country Status (1)

Country Link
JP (1) JPS61267773A (en)

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