JPS61143779A - Multiple transfer device - Google Patents
Multiple transfer deviceInfo
- Publication number
- JPS61143779A JPS61143779A JP59265672A JP26567284A JPS61143779A JP S61143779 A JPS61143779 A JP S61143779A JP 59265672 A JP59265672 A JP 59265672A JP 26567284 A JP26567284 A JP 26567284A JP S61143779 A JPS61143779 A JP S61143779A
- Authority
- JP
- Japan
- Prior art keywords
- transfer
- belt
- apertures
- meshes
- dielectric materials
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/163—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using the force produced by an electrostatic transfer field formed between the second base and the electrographic recording member, e.g. transfer through an air gap
- G03G15/1635—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using the force produced by an electrostatic transfer field formed between the second base and the electrographic recording member, e.g. transfer through an air gap the field being produced by laying down an electrostatic charge behind the base or the recording member, e.g. by a corona device
- G03G15/165—Arrangements for supporting or transporting the second base in the transfer area, e.g. guides
- G03G15/1655—Arrangements for supporting or transporting the second base in the transfer area, e.g. guides comprising a rotatable holding member to which the second base is attached or attracted, e.g. screen transfer holding drum
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用範囲
本発明は複数の画像形成ステーションでトナー画像を形
成し、同一転写材に上記トナー画像を重ね転写し、カラ
ープリント等を得るための多重転写装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Scope of Industrial Application The present invention relates to a multiple transfer device for forming toner images at a plurality of image forming stations and overlappingly transferring the toner images to the same transfer material to obtain color prints, etc. It is something.
従来技術
従来、この種の装置としては、例えば潜像形成にカール
ソン電子写真法を用いたカラープリンタの場合、第１図
の如くシアン、マゼンタ、イエロー、ブラックの各ステ
ーションＩ、ｆｆ、ＩＩ。BACKGROUND ART Conventionally, in the case of a color printer using Carlson electrophotography to form a latent image, for example, as an apparatus of this type, as shown in FIG.
■を並置し、各感光ドラム１１，１２，１３゜１４の回
りに１次コロナ帯電２１，２２，２３゜２４、シアン、
マゼンタ、イエロー、ブラックの現像器３１，３２，３
３，３４、転写コロナ帯電器４１，４２，４３，４４．
クリーナー５１゜５２．５３．５４を配置し、１次コロ
ナ帯電２１〜２４の後に情報信号によって光強度変調さ
れた光ビームｒ、−ｔ、を感光ドラム１１−１４に走査
して静電潜像を形成する。(2) are arranged side by side, and primary corona charging 21, 22, 23° 24, cyan,
Magenta, yellow, black developing devices 31, 32, 3
3, 34, transfer corona charger 41, 42, 43, 44.
Cleaners 51, 52, 53, and 54 are arranged, and after primary corona charging 21 to 24, light beams r and -t modulated in light intensity by information signals are scanned onto the photosensitive drums 11 to 14 to form electrostatic latent images. form.
静電潜像は各現像器３１〜３４によって現像され、シア
ン、マゼンタ、イエロー、ブラックノトナー像が形成さ
れ、このトナー像は薄い誘電体シートあるいはスクリー
ンメツシュからなる搬送ベルトに吸着帯電器６２で静電
吸着させ、転写紙Ｐを順次転写コロナ帯電器４１〜４４
を通過させて多重転写してカラー画像を転写紙Ｐ上に形
成する。The electrostatic latent image is developed by each of the developing devices 31 to 34 to form cyan, magenta, yellow, and black toner images, and this toner image is attracted to a conveyor belt made of a thin dielectric sheet or screen mesh by a charger 62. to electrostatically attract the transfer paper P and transfer it sequentially to the corona chargers 41 to 44.
A color image is formed on the transfer paper P by multiple transfer.
このような複数の画像形成ステーションでトナー画像を
形成し、同一転写材にトナー画像を多重転写をする装置
においては、転写材の搬送を上述したように薄い誘電体
シートあるいはスクリーンメツシュベルトに吸着させ、
このベルトを駆動ローラ６３で駆動ローラ６３の１回転
あるいは整数回転で各ステーション間隔を移動させる方
法が多重転写の画像ズレに対して好ましい。In such a device that forms toner images at multiple image forming stations and multiple-transfers the toner images onto the same transfer material, the transfer material is conveyed by being attracted to a thin dielectric sheet or screen mesh belt as described above. ,
A method in which the belt is moved by the drive roller 63 by one rotation or an integer number of rotations at each station interval is preferable to prevent image deviation due to multiple transfer.
又、薄い誘電体ベルトはコロナ帯電によってチャージア
ップして転写性が悪く、誘電体を低抵抗にする等の多重
転写性を改良する対策が必要である。一方スクリーンメ
ツシュベルトはメツシュを通して転写紙にコロナを与え
ることが出来、又、転写紙を十分静電吸着出来るため、
簡便に多重転写性と転写紙の静電吸着搬送が可能である
。In addition, thin dielectric belts are charged up by corona charging and have poor transfer properties, and it is necessary to take measures to improve multi-transfer properties, such as making the dielectric material low in resistance. On the other hand, the screen mesh belt can apply corona to the transfer paper through the mesh, and can sufficiently electrostatically attract the transfer paper, so
Easy multi-transfer performance and electrostatic adsorption transport of transfer paper are possible.
以上説明してきた多重転写装置において、画像ズレのな
い画像を与えるためには上述した薄い誘電体ベルトある
いはスクリーンメツシュベルトを横ズレや蛇行やよじれ
のないように正確に搬送する必要力５ある。しかしなが
ら、これらのベルトは幅が広く、又薄い誘電体で腰がな
く延びやすいため、横ズレや蛇行を防ぐのは困難で、例
えば両端にベルトの横ズレを防止するガイドを設けても
ベルトの端部がくずれたりしわになったりして実用的で
なかった。又第２図のように両端を金属ベルト６４で補
助したものも考えられたが、両端の金属ベルトの若干の
ベルトの長さの違いや送りスピードの違いでベルトがよ
じれ実用的でなかった。又第３図のように両端の金属ベ
ルト６４に送りの穴のあいたパーフォレーションベルト
ラ作用することが考えられるが、穴のピッチズレが画像
ズレになるため、非常に精密な穴ピッチのパーフォレー
ションベルトが必要となる。In the multi-transfer device described above, in order to provide an image without image shift, there is a necessary force 5 to accurately convey the thin dielectric belt or screen mesh belt described above without lateral shift, meandering, or twisting. However, these belts are wide, thin dielectric materials, and have no stiffness, making them easy to stretch, so it is difficult to prevent them from slipping sideways or meandering. It was not practical because the edges were bent or wrinkled. It has also been considered to supplement both ends with metal belts 64 as shown in FIG. 2, but this was impractical because the belt would twist due to slight differences in belt length and feeding speed between the metal belts at both ends. Also, as shown in Figure 3, perforated belts with feed holes on the metal belts 64 at both ends can be considered to act, but a perforated belt with a very precise hole pitch is required because the pitch deviation of the holes causes image deviation. becomes.
他の方法として、ベルトのズレを検知しベルトの送りを
制御する方法が提案されているが、微小のズレの検知と
ベルト送りの制御が必要で複雑な制御回路と機構が必要
である。As another method, a method has been proposed in which belt misalignment is detected and belt feeding is controlled, but this method requires detection of minute misalignment and control of belt feeding, and requires a complicated control circuit and mechanism.
発明の目的
本発明はこれらの点に鑑みて改良された新規な多重転写
装置を提供することを目的とする。OBJECTS OF THE INVENTION In view of these points, it is an object of the present invention to provide a new and improved multiplex transfer device.
本発明の別の目的は、特別のベルトズレ検出や制御回路
、制御機構を必要としない簡便な転写材搬送ベルト機構
を有する多重転写装置を提供することである。Another object of the present invention is to provide a multiple transfer device having a simple transfer material conveyance belt mechanism that does not require special belt misalignment detection, control circuits, or control mechanisms.
本発明の更に別の目的は、画像ズレのない簡便な多重転
写装置を可能とするものである。Still another object of the present invention is to enable a simple multiple transfer device without image shift.
実施例
第４図は、本発明の実施例を示した斜視図である１図に
おいて５６５はステンレス等の可撓性の金属の無端ベル
トであり、その上に転写に必要な最小限の開口部６５ａ
が複数配設され、その部分にスクリーンメツシュ６６が
接着剤等によって張っテする。スクリーンメツシュ６６
は不図示の駆動源により駆動される駆動ローラ６３に乗
り上げ、搬送ベルト６５のスピードが変化しないように
、又その上にのせられ静電吸着搬送される転写紙Ｐが静
７１！潜像担持体に接触するように無端ベルト６５の外
部に張る方がより望ましい、駆動ローラ６３及び従動ロ
ーテロ７の両端部には無端ベルト６５が横ズレしないよ
うガイド部６３ａ及び６７ａが突出して設けられている
。これにより無端ベルト６５はローラ６３・６７がらは
ずれないようになる。又無端ベルト６５には横方向に十
分に金属等の剛性部６５ｂが残っているため、金属等の
剛性により無端ベルトのよじれを防ぐことが出来る。Embodiment FIG. 4 is a perspective view showing an embodiment of the present invention. In FIG. 1, reference numeral 565 is an endless belt made of flexible metal such as stainless steel, on which the minimum openings necessary for transfer are formed. 65a
A plurality of screen meshes 66 are attached to the screen meshes 66 using an adhesive or the like. Screen mesh 66
rides on the drive roller 63 driven by a drive source (not shown), and the transfer paper P placed on it and conveyed by electrostatic adsorption is kept static so that the speed of the conveyor belt 65 does not change. Guide portions 63a and 67a are provided at both ends of the drive roller 63 and the driven rotary rotor 7, which are preferably stretched outside the endless belt 65 so as to contact the latent image carrier, to prevent the endless belt 65 from shifting laterally. It is being This prevents the endless belt 65 from coming off the rollers 63 and 67. Further, since the endless belt 65 has a sufficient rigid portion 65b made of metal or the like remaining in the lateral direction, the endless belt can be prevented from twisting due to the rigidity of the metal or the like.
又、無端ベルト６５は一体のベルトに開口部８５ａを設
けることが可能なため、周長や厚みの精度の良いものが
容易に製作可能である。上述発明では無端ベルト６５の
開口部６５ａにスクリーンメツシュ６６を設けたが、ス
クリーンメツシュ６６の変りに適当な薄い誘電体シート
を用いることも可能である。In addition, since the endless belt 65 can be provided with an opening 85a in an integral belt, it is possible to easily manufacture the endless belt 65 with high accuracy in circumferential length and thickness. In the above invention, the screen mesh 66 is provided in the opening 65a of the endless belt 65, but a suitable thin dielectric sheet may be used instead of the screen mesh 66.
又無端ベルト６５を表面あるいは裏面に絶縁コート等の
絶縁処理を施・し、金属部が直接感光ドラムに直接した
り転写コロナが放電するのを防ぐことも可能である。It is also possible to apply an insulating treatment such as an insulating coat to the front or back surface of the endless belt 65 to prevent the metal portion from directly contacting the photosensitive drum or the transfer corona from being discharged.
発明の詳細
な説明したように本発明の構成によれば、搬送に際して
も変形することがなく、簡便な装置で画像ズレのない転
写性の良い多臣転写を行うことが出来る。As described in detail, according to the configuration of the present invention, there is no deformation during conveyance, and it is possible to perform multiple transfer with good transferability without image shift using a simple device.
第１図〜第３図は従来例を示す断面図及び斜視図、第４
図は本発明の実施例を示した斜視図である。
１１．１２，１３．１４は感光ドラム、２１゜２２．２
３．２４は一次コロナ帯電器、３１゜３２．３３．３４
は現像器、４１，４２，４３゜４４は転写コロナ帯電器
、５１，５２，５３゜５４はクリーナ、６１は搬送ベル
ト、６２は転写紙吸着帯電器、６３は駆動ローラ、６４
は金属ベルト、６５は本発明の金属ベルト、６６はスク
リーンメツシュである。
■ＩＩ Ｉ［Ｉ
Ｊｌ’１ｌｌｋ１１
σ３ｆｌFigures 1 to 3 are sectional views and perspective views showing conventional examples;
The figure is a perspective view showing an embodiment of the present invention. 11.12, 13.14 are photosensitive drums, 21°22.2
3.24 is the primary corona charger, 31°32.33.34
41, 42, 43° 44 is a transfer corona charger, 51, 52, 53° 54 is a cleaner, 61 is a conveyor belt, 62 is a transfer paper adsorption charger, 63 is a drive roller, 64
65 is a metal belt, 65 is a metal belt of the present invention, and 66 is a screen mesh. ■II I[I Jl'1llk11 σ3fl
Claims (2)
搬送ベルトにより搬送して、転写材上に該画像形成ステ
ーションで形成した像を重ね転写する多重転写装置にお
いて、 該搬送ベルトの基体に設けられた複数の開口部に誘電体
を設け、該画像形成ステーションにおいて、該誘電体の
背面側から転写帯電を与えて転写材上に像を重ね転写す
ることを特徴とする多重転写装置。(1) In a multi-transfer device that transports a transfer material to a plurality of image forming stations by a transport belt and transfers images formed at the image forming stations onto the transfer material in a superimposed manner, a device provided on the base of the transport belt. A multi-transfer device characterized in that a dielectric material is provided in a plurality of openings, and in the image forming station, images are superimposed and transferred onto a transfer material by applying a transfer charge from the back side of the dielectric material.
範囲第１項に記載の多重転写装置。(2) The multiple transfer device according to claim 1, wherein the dielectric material is a screen mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59265672A JPS61143779A (en) | 1984-12-17 | 1984-12-17 | Multiple transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59265672A JPS61143779A (en) | 1984-12-17 | 1984-12-17 | Multiple transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61143779A true JPS61143779A (en) | 1986-07-01 |
Family
ID=17420385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59265672A Pending JPS61143779A (en) | 1984-12-17 | 1984-12-17 | Multiple transfer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61143779A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140041824A1 (en) * | 2012-02-11 | 2014-02-13 | International Business Machines Corporation | Forming metal preforms and metal balls |
-
1984
- 1984-12-17 JP JP59265672A patent/JPS61143779A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140041824A1 (en) * | 2012-02-11 | 2014-02-13 | International Business Machines Corporation | Forming metal preforms and metal balls |
| US8944306B2 (en) * | 2012-02-11 | 2015-02-03 | International Business Machines Corporation | Forming metal preforms and metal balls |
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