JPH0250160A - Heat fixing device - Google Patents
Heat fixing deviceInfo
- Publication number
- JPH0250160A JPH0250160A JP20690288A JP20690288A JPH0250160A JP H0250160 A JPH0250160 A JP H0250160A JP 20690288 A JP20690288 A JP 20690288A JP 20690288 A JP20690288 A JP 20690288A JP H0250160 A JPH0250160 A JP H0250160A
- Authority
- JP
- Japan
- Prior art keywords
- conveyor belt
- paper
- image
- cooling
- fixing device
- 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
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000011347 resin Substances 0.000 abstract description 12
- 229920005989 resin Polymers 0.000 abstract description 12
- 235000013405 beer Nutrition 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Photographic Developing Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は複写機等の用紙上の画像を熱により溶融する事
により定着させる熱定着器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal fixing device for fixing an image on a sheet of paper, such as a copying machine, by melting it with heat.
本発明は加熱手段により用紙を加熱し用紙の表面に形成
された画像を溶融し定着するとともに搬送ベルトに押し
付けた後、該用紙を冷却手段により冷却することにより
溶融した画像を固化し、搬送ベルトに画像が張り付かな
いようにしたものである。In the present invention, the paper is heated by a heating means to melt and fix the image formed on the surface of the paper, and is also pressed against a conveyor belt, and then the paper is cooled by a cooling means to solidify the fused image, and the image formed on the surface of the paper is melted and fixed. This prevents images from being stuck on the screen.
従来、用紙を加熱することにより用紙上の転写された画
像を定着する装置としては、第５図に示すようにハロゲ
ンランプ等のヒータ１４を内蔵した中空ローラ１５を用
いた通称ヒートローラと呼ばれている熱定着器や、第６
図に示すような湾曲したプレート１７に発熱体１６を取
り付け、用紙を圧接搬送するためのベルト１８で構成し
た熱定着器が知られている。Conventionally, a device for fixing a transferred image on paper by heating the paper is commonly called a heat roller, which uses a hollow roller 15 with a built-in heater 14 such as a halogen lamp, as shown in FIG. The heat fixing device and the 6th
2. Description of the Related Art A heat fixing device is known which includes a heating element 16 attached to a curved plate 17 as shown in the figure, and a belt 18 for conveying the sheet under pressure.
しかしながらこれらの熱定着器は画像が熱せられて溶融
している状態で剥離を行うため、溶融した画像が用紙か
ら剥離しローラやブレードに付着して用紙を汚したり、
ローラに巻き付いたり、画像がずれたりする欠点があっ
た。However, these thermal fixing devices peel off the image while it is heated and melted, so the melted image may peel off from the paper and adhere to the rollers or blades, staining the paper.
It had the disadvantage that it could get wrapped around the rollers and the image could be misaligned.
上記課題を解決するために本発明は、搬送ベルトと加熱
手段のほかに冷却手段も設けた。In order to solve the above problems, the present invention provides a cooling means in addition to the conveyor belt and the heating means.
上述のように構成することにより、まず加熱手段により
加熱される用紙の画像は、溶融するとともに搬送ベルト
に押し付けられ冷却手段に送られる。次に用紙は冷却手
段により冷却されて、溶融していた画像は固化する。こ
の状態で用紙を搬送ベルトよりはがせば画像は搬送ベル
トに付着することなく用紙に定着する。With the above-described configuration, the image on the sheet of paper heated by the heating means is first melted and is pressed against the conveyor belt and sent to the cooling means. Next, the paper is cooled by a cooling means, and the molten image is solidified. If the paper is peeled off from the conveyor belt in this state, the image will be fixed on the paper without adhering to the conveyor belt.
以下に本発明の一実施例を図面に基ずいて説明する。第
１図において、２本のペルトロ・−ラ２．３の周囲に搬
送ベルト４が適度なテンションで張られており、図中矢
印の方向に回転している。ベルトローラ２との間に搬送
ベルト４を挾み込む形で、ベルトローラ２の下方に加熱
手段５が設けられている。該加熱手段５は中空ローラ５
ａの中空部分にハロゲンランプ等のヒータ５ｂを内蔵し
ている。同様に、ベルトローラ３との間に搬送ベルト４
を挾み込む形でベルトローラ３の下方に冷却ローラ７ａ
と冷却ファン７ｂとで構成される冷却手段７が設けられ
ている。冷却ローラ７ａは図に示すように中空ローラの
内側；こフィン１０を設けた形状をしており、比較的熱
伝導率の良い例えばアルミ等の材料で作られており、フ
ィンの部分にはファン７ｂにより風が吹き付けられ大き
な冷却能力を備えている。加熱手段５と冷却手段７を結
ぶ搬送ベルトに沿って用紙が搬送ベルトから剥離しない
ようにベーパーガイド８が設けられている。An embodiment of the present invention will be described below based on the drawings. In FIG. 1, a conveyor belt 4 is stretched around two peltro rollers 2.3 with appropriate tension and rotates in the direction of the arrow in the figure. A heating means 5 is provided below the belt roller 2 so that the conveyor belt 4 is sandwiched between the belt roller 2 and the conveyor belt 4 . The heating means 5 is a hollow roller 5
A heater 5b, such as a halogen lamp, is built into the hollow part a. Similarly, the conveyor belt 4 is connected to the belt roller 3.
The cooling roller 7a is placed below the belt roller 3 with the
A cooling means 7 is provided which includes a cooling fan 7b and a cooling fan 7b. As shown in the figure, the cooling roller 7a has the shape of a hollow roller with fins 10 provided therein, and is made of a material with relatively good thermal conductivity, such as aluminum, and a fan is installed in the fin portion. 7b blows wind and has a large cooling capacity. A vapor guide 8 is provided along the conveyor belt connecting the heating means 5 and the cooling means 7 to prevent the paper from peeling off from the conveyor belt.
次に本実施例の動作と各要素の作用を説明する。Next, the operation of this embodiment and the effect of each element will be explained.
加熱手段５の中空ローラ５ａは第２図に示すようにギヤ
１１、ギヤ１２を介してモータ１３により駆動され、そ
の動力はモータと反対側に設けられたタイミングベルト
１０を介して冷却手段７に伝えられ、各ローラは第１図
に示す矢印の方向に回転している。用紙１は図中上方が
画像面であり、該画像面には第３図に示すように基紙１
ａの表面に粒子状のレジン１ｂがコーティングされてお
り該レジン１ｂの粒子の間に発色剤１ｃがしみ込んでお
り該発色剤１ｃの分布により画像の潜像が形成されてい
る。粒子状のレジン１ｂには発色剤ＩＣと反応して発色
する顕色材が含まれ高温時には溶融し常温では固化する
性質を有する。この用紙１を加熱手段５の中空ローラ５
ａと搬送ベルト４の間に挿入すると用紙１は加熱手段５
により加熱されたレジン１ｂが溶融し、発色剤ＩＣと顕
色材が混合して発色反応をおこす。用紙１はレジン１ｂ
が溶融した状態で搬送ベルト４に押し付けられ冷却手段
７の方に送られる。用紙１が加熱手段５から冷却手段７
に送られる開用紙１が搬送ベルト４から剥離しないよう
にペーパーガイド８により用紙１は搬送ベルト４に押し
付けられている。用紙１は冷却手段７に達すると冷却さ
れて表面のレジン１ｂが固化し用紙１にしっかりと固着
する。The hollow roller 5a of the heating means 5 is driven by a motor 13 via gears 11 and 12, as shown in FIG. and each roller is rotating in the direction of the arrow shown in FIG. Paper 1 has an image surface at the top in the figure, and base paper 1 is placed on the image surface as shown in FIG.
A particulate resin 1b is coated on the surface of a, and a coloring agent 1c penetrates between the particles of the resin 1b, and a latent image is formed by the distribution of the coloring agent 1c. The particulate resin 1b contains a color developer that develops color by reacting with the color former IC, and has the property of melting at high temperatures and solidifying at room temperature. This paper 1 is heated by the hollow roller 5 of the heating means 5.
When inserted between the paper 1 and the conveyor belt 4, the paper 1 is heated by the heating means 5.
The heated resin 1b is melted, and the color forming agent IC and color developing material are mixed to cause a coloring reaction. Paper 1 is resin 1b
is pressed against the conveyor belt 4 in a molten state and sent to the cooling means 7. Paper 1 is transferred from heating means 5 to cooling means 7
The paper 1 is pressed against the conveyor belt 4 by a paper guide 8 so that the open sheet 1 that is being sent to the conveyor belt 4 does not peel off from the conveyor belt 4. When the paper 1 reaches the cooling means 7, it is cooled and the resin 1b on the surface hardens and firmly adheres to the paper 1.
この時レジン１ｂ層の表面は搬送ベルト４の表面を型ど
りするため、搬送ベルト４の表面が平滑であれば光沢度
の高い画像が得られ、搬送ベルト４の表面がざらついて
いれば光沢度の低い画像が得らる。さらに、搬送ベルト
４の表面に細かい筋目を入れておけば写真のプリントで
綱目と呼ばれるような画像を得ることもできる。この様
に搬送ベルト４の表面状態を変えることにより任意の光
沢、表面を有する画像を得ることも出来る。冷却手段７
の出口において、搬送ベルト４はベルトローラ３により
ターンするため用紙１はそれ自身のこしによってベルト
ローラより剥離し排出される。この時は用紙１上のレジ
ン１ｂ層が固化しており、用紙１に固着しているため搬
送ベルト４へはレジン１ｂは付着しない。At this time, the surface of the resin 1b layer molds the surface of the conveyor belt 4, so if the surface of the conveyor belt 4 is smooth, an image with high gloss can be obtained, and if the surface of the conveyor belt 4 is rough, the gloss will be low. A low-quality image is obtained. Furthermore, by making fine lines on the surface of the conveyor belt 4, it is possible to obtain an image called a line in photographic prints. By changing the surface condition of the conveyor belt 4 in this way, it is possible to obtain an image with arbitrary gloss and surface. Cooling means 7
At the exit, the conveyor belt 4 is turned by the belt roller 3, so that the paper 1 is separated from the belt roller by its own straining and is discharged. At this time, the resin 1b layer on the paper 1 is solidified and adheres to the paper 1, so the resin 1b does not adhere to the conveyor belt 4.
次に、本発明にある第２の実施例を説明する。Next, a second embodiment of the present invention will be described.
第４図において加熱手段５はヒータ５ｂと加熱ベルト５
ｃと２本のベルト送りローラ５ａで構成されている。こ
の様な構成とすることにより用紙をゆっくりと加熱する
ことができ、急激な加熱により用紙に含まれる水分が沸
騰することにより画像にぶつぶつが生じる現象を防止す
ることができる。In FIG. 4, the heating means 5 includes a heater 5b and a heating belt 5.
c and two belt feeding rollers 5a. With such a configuration, the paper can be heated slowly, and it is possible to prevent the phenomenon in which the water contained in the paper boils due to rapid heating, causing bumps in the image.
冷却手段７は本実施例においてはペーパーガイドの機能
を兼ねたヒートシンク７Ｃと該ヒートシンク７Ｃに風を
送るファン７ｂとから構成されている。該冷却手段７は
搬送ベルト４及び用紙１を送る機能を有しないので送り
ローラ６が設けられている。さらに本実施例においては
ビール手段９が設けられている。該ビール手段９は比較
的細いローラであり、搬送ベルト４を小さい曲率で折り
返すことにより用紙１と搬送ベルト４の剥離を確実なも
のにしている。本実施例の作用は第１図に示した第１の
実施例と同様なので重複を避けるために省略する。In this embodiment, the cooling means 7 is composed of a heat sink 7C which also functions as a paper guide, and a fan 7b which sends air to the heat sink 7C. Since the cooling means 7 does not have the function of feeding the conveyor belt 4 and paper 1, a feeding roller 6 is provided. Furthermore, beer means 9 is provided in this embodiment. The beer means 9 is a relatively thin roller, and folds back the conveyor belt 4 with a small curvature to ensure separation of the paper 1 and the conveyor belt 4. The operation of this embodiment is similar to that of the first embodiment shown in FIG. 1, so a description thereof will be omitted to avoid duplication.
以上２つの実施例について説明してきたが、本発明はこ
の２つの実施例に限ることなく、例えば加熱手段に輻射
熱を利用するもの、冷却手段にベリチエ素子を使用する
もの、等のバリエーションにも適用できることは言うま
でもない。Although the above two embodiments have been described, the present invention is not limited to these two embodiments, but can also be applied to variations such as those that use radiant heat as a heating means, and those that use a Veritier element as a cooling means. It goes without saying that it can be done.
以上述べた如く、本発明によれば用紙を加熱しながら搬
送する加熱手段の他に加熱された用紙を冷却する冷却手
段を設けることにより、用紙上の画像がずれたり搬送部
へ付着したりすることなく用紙上の画像を定着し、（モ
愈の光沢を得ることができる。As described above, according to the present invention, by providing a cooling means for cooling the heated paper in addition to a heating means for transporting the paper while heating it, it is possible to prevent images on the paper from shifting or sticking to the transport section. It fixes the image on the paper without any scratches and gives it a glossy finish.
第１図は本発明の第１の実施例を示す縦断面図、第２図
は本発明の第１の実施例を示す上面図、第３図は用紙の
拡大縦断面図、第４図は第２の実施例を示す縦断面図、
第５図及び第６図は従来の熱定着器を示す縦断面図であ
る。
２．３・・・ベルトローラ
４・・・・・搬送ベルト
５・・・・・加熱手段
７・・・・・冷却手段
以上
用愁のｆ、人絹ｊヰ面図
第 ３ 図
＃明の７２の気旋例を示１縦幼′面図
第 ４ 図
第
図
第
図FIG. 1 is a longitudinal cross-sectional view showing a first embodiment of the present invention, FIG. 2 is a top view showing the first embodiment of the present invention, FIG. 3 is an enlarged longitudinal cross-sectional view of a sheet, and FIG. A vertical cross-sectional view showing a second embodiment,
FIGS. 5 and 6 are longitudinal sectional views showing a conventional heat fixing device. 2.3...Belt roller 4...Transport belt 5...Heating means 7...Cooling means Fig. 4 shows an example of 72 air bubbles.
Claims (1)
せる熱定着器において、用紙と密着して用紙を搬送する
エンドレスの搬送ベルトと、該エンドレスの搬送ベルト
の内側に設けられた複数のベルトローラと、前記用紙を
搬送手段に押し付けながら加熱する加熱手段と、加熱さ
れた用紙を前記搬送ベルトに押し付けながら冷却する冷
却手段とからなる熱定着器。 ２）搬送ベルトの表面に意図的に凹凸を設け、任意の光
沢、表面状態の画像を得られるようにしたことを特徴と
する特許請求の範囲第１項記載の熱定着器。[Scope of Claims] 1) In a heat fixing device that heats and fixes an image obtained after being transferred onto paper in a copying machine, etc., an endless conveyor belt that conveys the paper in close contact with the paper, and an inner side of the endless conveyor belt. A thermal fixing device comprising a plurality of belt rollers provided on the conveyor belt, a heating means for heating the sheet while pressing the sheet against the conveyor belt, and a cooling means for cooling the heated sheet while pressing the sheet against the conveyor belt. 2) The heat fixing device according to claim 1, wherein the surface of the conveyor belt is intentionally provided with irregularities so that an image with arbitrary gloss and surface condition can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20690288A JPH0250160A (en) | 1988-05-12 | 1988-08-19 | Heat fixing device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63-115138 | 1988-05-12 | ||
| JP11513888 | 1988-05-12 | ||
| JP20690288A JPH0250160A (en) | 1988-05-12 | 1988-08-19 | Heat fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0250160A true JPH0250160A (en) | 1990-02-20 |
Family
ID=26453719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20690288A Pending JPH0250160A (en) | 1988-05-12 | 1988-08-19 | Heat fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0250160A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5099288A (en) * | 1990-11-19 | 1992-03-24 | Lexmark International, Inc. | Fixing device with selectable finish |
| WO1993000613A1 (en) * | 1991-06-27 | 1993-01-07 | Seiko Epson Corporation | Image formation apparatus |
| US6689196B2 (en) | 2001-04-13 | 2004-02-10 | Nippon Soken Inc. | Fuel vapor control apparatus |
| JP2014059423A (en) * | 2012-09-18 | 2014-04-03 | Konica Minolta Inc | Sheet cooling device, and image forming apparatus including the same |
-
1988
- 1988-08-19 JP JP20690288A patent/JPH0250160A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5099288A (en) * | 1990-11-19 | 1992-03-24 | Lexmark International, Inc. | Fixing device with selectable finish |
| WO1993000613A1 (en) * | 1991-06-27 | 1993-01-07 | Seiko Epson Corporation | Image formation apparatus |
| US5414488A (en) * | 1991-06-27 | 1995-05-09 | Seiko Epson Corporation | Image forming apparatus having temperature control for photosensitive member |
| US6689196B2 (en) | 2001-04-13 | 2004-02-10 | Nippon Soken Inc. | Fuel vapor control apparatus |
| JP2014059423A (en) * | 2012-09-18 | 2014-04-03 | Konica Minolta Inc | Sheet cooling device, and image forming apparatus including the same |
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