JPS6320994Y2 - - Google Patents
Info
- Publication number
- JPS6320994Y2 JPS6320994Y2 JP1979086611U JP8661179U JPS6320994Y2 JP S6320994 Y2 JPS6320994 Y2 JP S6320994Y2 JP 1979086611 U JP1979086611 U JP 1979086611U JP 8661179 U JP8661179 U JP 8661179U JP S6320994 Y2 JPS6320994 Y2 JP S6320994Y2
- Authority
- JP
- Japan
- Prior art keywords
- photoreceptor
- color
- developing device
- presser
- developing
- 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.)
- Expired
Links
- 108091008695 photoreceptors Proteins 0.000 claims description 45
- 238000012546 transfer Methods 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 10
- 238000011161 development Methods 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 5
- 239000003086 colorant Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Description
【考案の詳細な説明】
本考案は電子複写装置の湿式カラー現像装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wet color developing device for an electronic copying machine.
カラー原稿の色分解された光像を感光体上に帯
電、色分解露光により静電潜像として形成し、湿
式現像により得られた着色トナー像を転写するカ
ラー複写装置においては、感光体が平面もしくは
曲面として形成されており、現像器が感光体の現
像する部分に接近して現像処理を行なつていた。 In a color copying device, a color-separated optical image of a color document is charged on a photoreceptor, and is formed as an electrostatic latent image by color-separating exposure, and a colored toner image obtained by wet development is transferred.The photoreceptor is a flat surface. Alternatively, the surface is formed as a curved surface, and the developing device performs the developing process in close proximity to the portion of the photoreceptor to be developed.
湿式カラー現像においては、それぞれの分解色
に応じた色の現像液を有する現像器が感光体に接
触して現像するため、露光された分解色に対応す
る色の現像器が待機位置から感光体に接触する位
置へ例えば上下に移動し、他の分解色に対応する
現像器は待機位置に待機している。このような現
像装置では、現像が終つて現像器が感光体から離
れ、待機位置へ戻つた場合、感光体に付着した現
像液は現像作用を行ないながら感光体と共に移動
する。しかるに現像液が過剰に付着しやすいた
め、その過剰現像液は液滴となつて感光体の現像
器による現像位置付近に滞留することになり、折
角現像した画像を汚したり、滞留している現像液
と次に現像しようとする現像液が混入したりす
る。すなわち多色の現像液が混入した状態で滞留
するという不具合を生じる。 In wet color development, a developer having a developer corresponding to each separation color contacts the photoconductor to develop the image, so the developer corresponding to the exposed separation color moves, for example, up and down, from a standby position to a position where it contacts the photoconductor, while the developers corresponding to the other separation colors wait in their standby positions. In such a developing device, when the development is completed and the developer is separated from the photoconductor and returns to the standby position, the developer adhering to the photoconductor moves together with the photoconductor while performing the developing action. However, since the developer is likely to adhere excessively, the excess developer becomes droplets and remains near the developing position of the photoconductor by the developer, which may soil the image that has been developed, or the developer that remains may be mixed with the developer to be developed next. In other words, the problem of multiple color developers remaining mixed and staying is caused.
又感光体が平面状で搬送される場合、感光体が
移動中に例えば上下に変動を生ずるので、感光体
と現像器との距離を一定に保つことが難かしくな
る。 Further, when the photoreceptor is transported in a flat state, the photoreceptor fluctuates, for example, up and down during movement, making it difficult to maintain a constant distance between the photoreceptor and the developing device.
感光体平面の場合、感光体の移動により現像器
が感光体に近ずきすぎると、画像流れや画像滲み
を起して画像がぼけてしまう。離れすぎると、画
像濃度が下り、感光体の波打ちで濃度むらを生じ
たりする。 In the case of a flat photoreceptor, if the developing device comes too close to the photoreceptor due to the movement of the photoreceptor, image deletion or blurring will occur, resulting in a blurred image. If they are too far apart, the image density will decrease and density unevenness will occur due to waving of the photoreceptor.
本考案は上記の不具合を解消し、色の違う現像
液の混入を防止し、現像器と感光体との間の距離
を一定に保つ現像装置を提供することを目的とし
ている。 It is an object of the present invention to provide a developing device that eliminates the above-mentioned problems, prevents the mixing of developers of different colors, and maintains a constant distance between the developing device and the photoreceptor.
この目的を本考案はベルト状感光体を使用し、
走行するベルトの現像しようとする現像器に対向
する部分を現像器に接近させる装置により達成し
た。 For this purpose, the present invention uses a belt-shaped photoreceptor,
This was achieved by using a device that brings the portion of the running belt facing the developing device closer to the developing device.
本考案の詳細を図に示す実施例により説明す
る。 The details of the invention will be explained with reference to embodiments shown in the figures.
図において、原稿固定台１の上の原稿の像が光
学装置４により、帯電用コロナ放電手段３により
帯電された感光体２の上に露光される。その際光
像は色分解フイルター５により分解され、例えば
ブルー、グリーン、レツドの三色に分解するとき
はその何れかの色のフイルター５を通して光像が
静電潜像を感光体２の上に形成する。 In the figure, an image of a document on a document fixing table 1 is exposed by an optical device 4 onto a photoreceptor 2 charged by a charging corona discharge means 3. At this time, the light image is separated by a color separation filter 5. For example, when separating into three colors of blue, green, and red, the light image passes through the filter 5 of any of the colors and forms an electrostatic latent image on the photoreceptor 2. Form.
感光体２は例えばエンドレスベルト状に形成さ
れ、搬送ローラ１９に巻掛けられている。 The photoreceptor 2 is formed, for example, in the shape of an endless belt, and is wound around a conveyance roller 19 .
感光体２の上にブルー、グリーン、レツド等の
色分解フイルター５を通して形成された潜像はそ
れぞれ現像装置６のイエロートナー現像器６ａ、
マゼンタトナー現像器６ｂ、シアントナ現像器６
ｃ等によりそれぞれ対応する着色トナーで現像さ
れ、顕像化される。各色の現像器６ａ，６ｂ，６
ｃにはそれぞれの現像液を貯蔵するタンク９ａ，
９ｂ，９ｃより現像液供給ポンプ８ａ，８ｂ，８
ｃにより現像液が供給される。 The latent images formed on the photoreceptor 2 through the color separation filter 5 for blue, green, red, etc. are respectively transferred to a yellow toner developer 6a of a developing device 6.
Magenta toner developer 6b, cyan toner developer 6
c, etc., and are developed with corresponding colored toners and visualized. Developers 6a, 6b, 6 for each color
tank 9a for storing each developer;
Developing solution supply pumps 8a, 8b, 8 from 9b, 9c
The developer is supplied by c.
現像された感光体２は走行中にエアナイフによ
り余分の現像液をかき落し、現像液乾燥装置１０
の送風器１１による風により若干乾燥され、転写
シート２０に転写される。 While the developed photoreceptor 2 is traveling, excess developer is scraped off by an air knife, and the developer is transferred to a developer drying device 10.
The image is slightly dried by air from the blower 11 and transferred onto the transfer sheet 20.
転写シート２０はあらかじめ金属製コピードラ
ム２１に巻きつけてセツトしておき、回転する間
に予備帯電用コロナ放電手段１５により予備帯電
し、現像液のの溶媒と同じ溶液がプリウエツト液
貯蔵タンク１４よりプリウエツト液供給ポンプ１
３により供給されるプリウエツト液をプリウエツ
トローラ１２により転写シート２０に塗布し、プ
リウエツトした状態で感光体２に接触して感光体
２のトナー像を転写シート２０の上に転移する。
転写後分離除電用コロナ放電手段１６の作用下に
おいて感光体２と転写シート２０の分離を円滑に
行ない、転写されたトナー像を定着手段１７によ
り定着する。 The transfer sheet 20 is wound around and set in advance on a metal copy drum 21, and while it rotates, it is pre-charged by the pre-charging corona discharge means 15, and the same solution as the solvent of the developer is supplied from the pre-wet liquid storage tank 14. Prewet liquid supply pump 1
The prewetting liquid supplied by 3 is applied to the transfer sheet 20 by the prewetting roller 12, and in the prewet state, it comes into contact with the photoreceptor 2, and the toner image on the photoreceptor 2 is transferred onto the transfer sheet 20.
The photoreceptor 2 and the transfer sheet 20 are smoothly separated under the action of the post-transfer separation and static elimination corona discharge means 16, and the transferred toner image is fixed by the fixing means 17.
転写後の感光体２はクリーニング手段１８によ
り、残留トナーのクリーニングがされ、次の分解
色の像をつくるため帯電からの上記の工程をくり
返す。 After the transfer, the photoreceptor 2 is cleaned of residual toner by the cleaning means 18, and the above steps from charging are repeated to create the next separated color image.
転写シート２０の上には分解された色の光像が
感光体２により順次重ね転写され所定のカラーコ
ピーを得る。 The separated color optical images are sequentially transferred onto the transfer sheet 20 by the photoreceptor 2 in an overlapping manner to obtain a predetermined color copy.
分解色の現像に際しては、走行する感光体２を
間にして各分解色の現像器６ａ，６ｂ，６ｃに対
向する位置に押え装置７、例えば押えローラ７
ａ，７ｂ，７ｃがそれぞれ配置されており、その
押えローラ７が現像器６に感光体２を接近させる
位置まで移動する。 When developing the separated colors, a presser device 7, for example, a presser roller 7, is placed at a position facing the developing devices 6a, 6b, 6c for each separated color with the traveling photoreceptor 2 in between.
a, 7b, and 7c are arranged, and the presser roller 7 moves to a position where the photoreceptor 2 approaches the developing device 6.
通常は押えローラ７ａ，７ｂ，７ｃは現像器６
ａ，６ｂ，６ｃから離れた待機位置にあり、現像
に際して分解露光色に対応した押えローラ７が現
像器６に向つて移動する。例えば第１色の現像の
ときには第１押えローラ７ａが感光体２を押し、
感光体２を第１現像器６ａに接近させ、第２色の
ときは第２押えローラ７ｂが感光体２を第２現像
器６ｂに、第３色のときは第３押えローラ７ｃが
感光体２を第３現像器６ｃに押えて接近させ、現
像する。 Usually, the presser rollers 7a, 7b, 7c are the developing device 6.
A, 6b, and 6c are located at a standby position, and a presser roller 7 corresponding to the separated exposed color moves toward the developing device 6 during development. For example, when developing the first color, the first presser roller 7a presses the photoreceptor 2,
The photoconductor 2 is brought close to the first developing device 6a, and when the second color is used, the second presser roller 7b moves the photoconductor 2 to the second developing device 6b, and when the third color is used, the third presser roller 7c moves the photoconductor 2 to the second developing device 6b. 2 is brought close to the third developing device 6c and developed.
１つの色の現像が終ると、その押えローラ７は
待機位置に復帰し、次の色の押えローラが感光体
２を押さえる。 When the development of one color is completed, the presser roller 7 returns to the standby position, and the presser roller of the next color presses the photoreceptor 2.
感光体２を押えローラにより裏面から押さえて
現像器に接近させるので感光体の変動の影響なく
常に所定の距離で感光体を現像器に接近保持する
ことができる。図から明らかなように感光体２は
押えローラ７により押えられている接近位置にあ
る部分が一番低く、他の部分、特に感光体の移動
方向における下流側の部分は高くなるように転写
シート２０の位置及び転写シート２０までの感光
体の走行経路が設定されている。したがつて感光
体上の現像液は低い方へ、つまり現在現像中の現
像器の方へ流れ、他の現像器の中に落下し混色す
ることが防止できる。また、画像流れや画像滲
み、画像濃度むらを生ずることなく常に一定した
画質を維持することが可能になつた。 Since the photoreceptor 2 is pressed from the back side by a presser roller and moved closer to the developing device, the photoreceptor can always be held close to the developing device at a predetermined distance without being affected by fluctuations in the photoreceptor. As is clear from the figure, the transfer sheet is placed so that the portion of the photoreceptor 2 at the approach position where it is pressed by the presser roller 7 is the lowest, and the other portions, especially the portions on the downstream side in the direction of movement of the photoreceptor, are higher. 20 and the traveling route of the photoreceptor to the transfer sheet 20 are set. Therefore, the developer on the photoreceptor flows lower, that is, toward the developing device currently performing development, and can be prevented from falling into other developing devices and causing color mixing. Furthermore, it has become possible to always maintain constant image quality without causing image deletion, image blurring, or image density unevenness.
乾燥装置の送風器が働き始めるタイミングは押
えローラ７ａにより感光体２を現像器に押しつけ
て感光体にテンシヨンがかかつてからとする。 The timing at which the air blower of the drying device starts working is when the photoreceptor 2 is pressed against the developing device by the presser roller 7a and tension is applied to the photoreceptor.
送風が早すぎると感光体に波打ちを生じ、感光
体の搬送がスムーズに行なえないからである。 This is because if the air is blown too quickly, the photoreceptor will be undulated and the photoreceptor cannot be transported smoothly.
第２色第３色の現像時も同様に押えローラ７
ｂ，７ｃが感光体を押し下げた時に乾燥装置が働
き始め、感光体の現像部が通過した直後に送風器
は停止するようにする。このようにして感光体に
常にテンシヨンをかけた状態で押えローラを駆動
させることが可能である。 Similarly, when developing the second color and the third color, the presser roller 7
The drying device starts working when the photoreceptors b and 7c push down the photoreceptor, and the blower stops immediately after the photoreceptor passes through the developing section. In this way, it is possible to drive the presser roller while always applying tension to the photoreceptor.
図は本考案に係る装置を設けた複写装置の説明
図である。
２……感光体、３……帯電用コロナ放電手段、
４……光学装置、５……色分解フイルター、６…
…現像器、７……押え装置、２０……転写シー
ト。
The figure is an explanatory diagram of a copying machine equipped with a device according to the present invention. 2...Photoreceptor, 3...Corona discharge means for charging,
4...Optical device, 5...Color separation filter, 6...
...developing device, 7...pressing device, 20...transfer sheet.
Claims (1)
された静電潜像を色分解の数に応じて設けらられ
た複数の湿式現像器のうちの露光分解色に応じた
現像器により現像し、現像後のトナー像を転写紙
に転写する複写装置の湿式カラー現像装置におい
て、並んで配置された各現像器に対向して感光体
の裏面に配置された押え装置が設けられ、該押え
装置が個別に待機位置と感光体を現像器に対し所
定の位置まで接近させる接近位置との間を往復動
可能に形成されていることと、１個の前記押え装
置が接近位置に移動した状態では当該押え位置よ
りも移動方向下流側の感光体ベルト表面が当該押
え装置により押えられる感光体ベルト部の表面よ
りも高くなるように、感光体ベルト経路が設定し
てあることを特徴とする複写装置の湿式カラー現
像装置。 The electrostatic latent image formed on the photoreceptor belt by charging and color separation exposure is developed by a developing device corresponding to the exposed separation color among a plurality of wet developing devices provided according to the number of color separations, In a wet color developing device of a copying machine that transfers a toner image after development onto a transfer paper, a presser device is provided on the back surface of a photoreceptor facing each developer arranged in a row, and the presser device is The device is configured to be able to move individually between a standby position and an approach position where the photoreceptor approaches a predetermined position with respect to the developing device, and when one of the holding devices moves to the approach position, the A copying apparatus characterized in that a photoconductor belt path is set such that the surface of the photoconductor belt on the downstream side in the movement direction from the presser position is higher than the surface of the photoconductor belt section pressed by the presser device. Wet color developing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979086611U JPS6320994Y2 (en) | 1979-06-26 | 1979-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979086611U JPS6320994Y2 (en) | 1979-06-26 | 1979-06-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS565149U JPS565149U (en) | 1981-01-17 |
| JPS6320994Y2 true JPS6320994Y2 (en) | 1988-06-10 |
Family
ID=29319857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979086611U Expired JPS6320994Y2 (en) | 1979-06-26 | 1979-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6320994Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58137611A (en) * | 1982-02-12 | 1983-08-16 | Shin Meiwa Ind Co Ltd | Operating device |
| JPS58137610A (en) * | 1982-02-12 | 1983-08-16 | Shin Meiwa Ind Co Ltd | Operating device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50151532A (en) * | 1974-05-28 | 1975-12-05 | ||
| JPS5268422A (en) * | 1975-12-03 | 1977-06-07 | Yokogawa Hokushin Electric Corp | Two-color electrostatic recording apparatus |
-
1979
- 1979-06-26 JP JP1979086611U patent/JPS6320994Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50151532A (en) * | 1974-05-28 | 1975-12-05 | ||
| JPS5268422A (en) * | 1975-12-03 | 1977-06-07 | Yokogawa Hokushin Electric Corp | Two-color electrostatic recording apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS565149U (en) | 1981-01-17 |
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