JPS6248225B2 - - Google Patents
Info
- Publication number
- JPS6248225B2 JPS6248225B2 JP52064646A JP6464677A JPS6248225B2 JP S6248225 B2 JPS6248225 B2 JP S6248225B2 JP 52064646 A JP52064646 A JP 52064646A JP 6464677 A JP6464677 A JP 6464677A JP S6248225 B2 JPS6248225 B2 JP S6248225B2
- Authority
- JP
- Japan
- Prior art keywords
- copy paper
- image
- back side
- transferred
- transfer
- 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
- 238000000034 method Methods 0.000 claims description 3
- 108091008695 photoreceptors Proteins 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Counters In Electrophotography And Two-Sided Copying (AREA)
- Fixing For Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Conveyance By Endless Belt Conveyors (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【発明の詳細な説明】
（技術分野）
本発明は両面複写の可能な湿式複写機による両
面複写方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a double-sided copying method using a wet-type copying machine capable of double-sided copying.
（従来技術）
静電転写による湿式複写機は、感光体の面上に
形成した潜像に現像液を供給して顕像とし、該顕
像をコピー用紙に転写した後それを加熱して定着
するので、定着に際しコピー用紙が加熱による伸
縮を生じその平面性が悪化する。したがつて、コ
ピー用紙の表面への複写に際して生じた前記平面
性の悪化によつて裏面への複写に際し、コピー用
紙の感光体面への密着性が低下する。その結果、
感光体面からコピー用紙への顕像の転写が一様に
行えなくなり転写むらが発生する。(Prior art) A wet-type copying machine using electrostatic transfer supplies a developer to a latent image formed on the surface of a photoreceptor to make a developed image, transfers the developed image to copy paper, and then heats it to fix it. Therefore, during fixing, the copy paper expands and contracts due to heating, and its flatness deteriorates. Therefore, the deterioration in flatness that occurs when copying onto the front side of the copy paper reduces the adhesion of the copy paper to the photoreceptor surface when copying onto the back side. the result,
The developed image cannot be transferred uniformly from the photoconductor surface to the copy paper, resulting in uneven transfer.
そこで、特開昭51−16031号公報に示すよう
に、表面コピー時に圧力定着装置により、転写紙
に軽く接触してもトナーが剥離しない程度にトナ
ー粒子を転写紙繊維中に入りこませるような仮定
着を行い、裏面コピー時には上記圧力定着装置及
び熱定着器により完全に定着することが考えられ
たが、２方式の定着装置を用いているので装置が
大型になり消費エネルギーも多く高価になるとい
う問題点があつた。 Therefore, as shown in JP-A-51-16031, a pressure fixing device is used during surface copying to infiltrate toner particles into the transfer paper fibers to the extent that the toner does not peel off even when lightly touching the transfer paper. It was considered that temporary fixing would be performed, and that the pressure fixing device and heat fixing device described above would be used to completely fix the image when copying the back side, but since two types of fixing devices were used, the device would be large and consume a lot of energy, making it expensive. There was a problem.
（目 的）
本発明は、湿式複写機の両面複写方法に於てコ
ピー紙の裏面への複写に際し、転写むらの発生を
防止すると共に装置全体を小型、軽量化し、消費
エネルギーを少くして安価に提供することを目的
としている。(Purpose) The present invention prevents the occurrence of uneven transfer when copying onto the back side of copy paper in a double-sided copying method of a wet-type copying machine, reduces the size and weight of the entire device, reduces energy consumption, and is inexpensive. It is intended to provide.
（構 成）
本発明は上記目的を達成するため、感光体上の
余剰現像液をスクイズローラーで除去し、表面に
画像を転写後のコピー用紙に現像液が吸収される
ようにし、表面に画像を転写されたコピー用紙
が、裏面にさらに画像を転写されるとき転写ムラ
を生じない程度の平面性を維持し得るように定着
器の効力を減じて表面定着を行い、次いでコピー
用紙裏面に画像を転写し定着器で充分の裏面定着
を行う如くしたことを特徴とするものである。(Structure) In order to achieve the above object, the present invention removes the excess developer on the photoreceptor with a squeeze roller, and allows the developer to be absorbed by the copy paper after the image is transferred to the surface. The effect of the fixing device is reduced to maintain the flatness of the copy paper to which the image has been transferred to a level that does not cause uneven transfer when the image is further transferred to the back side, and then the image is transferred to the back side of the copy paper. The invention is characterized in that it transfers the image and sufficiently fixes it on the back surface using a fixing device.
以下、実施例に基づいて具体的に説明する。第
１図は本発明の第１の実施例を示すもので、１は
感光体ドラムであつて、矢印Ａの方向に回転し、
その表面には現像装置２より現像液を供給して得
られた顕像が形成されている。３は転写装置であ
つて、レジストローラー４を経て鎖線Ｂのように
供給されているコピー用紙に前記顕像の転写を行
う。５は給紙トレイ６上部に設けた給紙ローラー
であつて、コピー用紙７を所定のサイクルに従つ
て１枚ずつ繰り出すために矢印Ｃ方向に回転す
る。８は現像装置２の直後に設けられたスクイズ
ローラーで感光体ドラム１と微少間隙を存して矢
印Ｄ方向に回転し、感光体ドラム１上の余剰現像
液を除去し、コピー用紙７に静電転写が可能で且
つコピー用紙７が感光体ドラム１に接触しても、
転写後のコピー用紙７に瞬間的に現像液が吸収さ
れコピー用紙７が乾いた感触状態となるようにし
てある。９はターンベルトであつて、ローラー１
０との協動により感光体ドラム１からコピー用紙
を剥離し、それを送りローラー１１によりゲート
１２に向つて移送される。 Hereinafter, a detailed description will be given based on examples. FIG. 1 shows a first embodiment of the present invention, in which 1 is a photosensitive drum which rotates in the direction of arrow A;
A developed image obtained by supplying a developer from the developing device 2 is formed on its surface. Reference numeral 3 denotes a transfer device which transfers the developed image onto a copy sheet fed as shown by a chain line B via a registration roller 4. Reference numeral 5 denotes a paper feed roller provided above the paper feed tray 6, which rotates in the direction of arrow C to feed out copy sheets 7 one by one according to a predetermined cycle. A squeeze roller 8 is provided immediately after the developing device 2 and rotates in the direction of arrow D with a small gap between it and the photoreceptor drum 1 to remove excess developer on the photoreceptor drum 1 and apply static onto the copy paper 7. Even if electrotransfer is possible and the copy paper 7 contacts the photosensitive drum 1,
The developer is instantaneously absorbed into the copy paper 7 after the transfer, so that the copy paper 7 feels dry. 9 is a turn belt, and roller 1
The copy paper is peeled off from the photosensitive drum 1 by cooperation with the photosensitive drum 1, and is transported toward the gate 12 by the feed roller 11.
従つて、少々送りローラー１１で挟持した位で
は容易にオフセツトが発生する様なことはない。
又、送りローラー１１もオフセツトが発生し難い
材質で構成されている。 Therefore, even if the paper is slightly pinched by the feed roller 11, offset will not easily occur.
Further, the feed roller 11 is also made of a material that does not easily cause offset.
次に作用について説明する。 Next, the effect will be explained.
給紙トレイ６から供給される両面共未複写のコ
ピー用紙７は、転写装置３により感光体ドラム１
上の顕像が表面に転写され、転写後のコピー用紙
７は乾燥した感触状態で常にヒーター１５と１６
の間に送り込まれるようになつているが、ヒータ
ー１５，１６が表面複写の時は点線の位置にはな
れ、裏面にさらに画像を転写されるとき、転写ム
ラを生じない程度の平面性を維持し得る程度に定
着器の効力を減ずるようになつており、裏面複写
の時は実線の如く位置し、その間を通過する両面
複写済のコピー用紙７の表裏両面を充分に加熱し
定着するようになつている。ヒーター１５，１６
を点線の位置にはなす代りにヒーターを切るよう
にして、コピー紙を熱的に溶剤が転写紙に吸収さ
れ、さらに数秒経過した「一次乾燥状態」になる
ようにしてもよい。 Copy paper 7, both sides of which have not been copied, is fed from the paper feed tray 6 and transferred to the photosensitive drum 1 by the transfer device 3.
The above developed image is transferred to the surface, and the copy paper 7 after the transfer is kept in a dry state by the heaters 15 and 16.
However, when copying the front side, the heaters 15 and 16 are moved to the dotted line position, and when an image is further transferred to the back side, flatness is maintained to the extent that uneven transfer does not occur. The effect of the fixing device is reduced to the extent that the fixing device is used, and when copying on the back side, it is positioned as shown by the solid line, and both the front and back sides of the copy paper 7 that has been copied on both sides are sufficiently heated and fixed. ing. Heater 15, 16
Instead of placing the transfer paper at the position indicated by the dotted line, the heater may be turned off so that the solvent is thermally absorbed into the transfer paper and the copy paper is brought into a "primary dry state" after several seconds have elapsed.
（効 果）
本発明によれば、感光体上の余剰現像液をスク
イズローラーで除去し、表面に画像を転写後のコ
ピー用紙に現像液が吸収されるようにし、表面に
画像を転写されたコピー用紙が、裏面にさらに画
像を転写されるとき転写ムラを生じない程度の平
面性を維持し得るように定着器の効力を減じて表
面定着を行い、次いでコピー用紙裏面に画像を転
写し定着器で充分の裏面定着を行う如くなつてい
るので、コピー紙の裏面への複写に際し転写むら
の発生を防止できると共に装置全体を小型、軽量
化し消費エネルギーを少くして安価に提供するこ
とができる。(Effects) According to the present invention, excess developer on the photoreceptor is removed by a squeeze roller, and the developer is absorbed by the copy paper after the image has been transferred to the surface. When the image is further transferred to the back side of the copy paper, the effect of the fixing device is reduced to maintain the flatness to the extent that uneven transfer does not occur, and then the image is transferred to the back side of the copy paper and fixed. Since the device is designed to perform sufficient fixing on the back side, uneven transfer can be prevented when copying to the back side of copy paper, and the entire device can be made smaller and lighter, reducing energy consumption and providing it at a lower cost. .
図は本発明の実施例に使用する装置の縦断側面
図である。
１……感光体ドラム、２……現像装置、３……
転写装置、８……スクイズローラー、１２……ゲ
ート、１５，１６……ヒーター。
The figure is a longitudinal sectional side view of an apparatus used in an embodiment of the present invention. 1...Photosensitive drum, 2...Developing device, 3...
Transfer device, 8... squeeze roller, 12... gate, 15, 16... heater.
Claims (1)
除去し、表面に画像を転写後のコピー用紙に現像
液が吸収されるようにし、表面に画像を転写され
たコピー用紙が、裏面にさらに画像を転写される
とき転写ムラを生じない程度の平面性を維持し得
るように定着器の効力を減じて表面定着を行い、
次いでコピー用紙裏面に画像を転写し定着器で充
分の裏面定着を行う如くした湿式複写機の両面複
写方法。1 Remove the excess developer on the photoconductor with a squeeze roller so that the developer is absorbed by the copy paper after the image has been transferred to the front surface, and the copy paper with the image transferred to the front side is further imprinted on the back side. Surface fixing is performed by reducing the effectiveness of the fixing device so that flatness can be maintained to the extent that uneven transfer does not occur during transfer.
A double-sided copying method for a wet type copying machine, in which the image is then transferred to the back side of the copy paper and sufficiently fixed on the back side using a fixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6464677A JPS54630A (en) | 1977-06-03 | 1977-06-03 | Both side copying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6464677A JPS54630A (en) | 1977-06-03 | 1977-06-03 | Both side copying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54630A JPS54630A (en) | 1979-01-06 |
| JPS6248225B2 true JPS6248225B2 (en) | 1987-10-13 |
Family
ID=13264214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6464677A Granted JPS54630A (en) | 1977-06-03 | 1977-06-03 | Both side copying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54630A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08167382A (en) * | 1994-12-13 | 1996-06-25 | Toshiba Hokuto Denshi Kk | Magnetron for microwave oven |
| JP2010072371A (en) * | 2008-09-18 | 2010-04-02 | Mitsubishi Heavy Ind Ltd | Fixing device and fixing method, and electrophotographic printer |
-
1977
- 1977-06-03 JP JP6464677A patent/JPS54630A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54630A (en) | 1979-01-06 |
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