JPH028876A - Non-contact type heat fixing device - Google Patents
Non-contact type heat fixing deviceInfo
- Publication number
- JPH028876A JPH028876A JP16024688A JP16024688A JPH028876A JP H028876 A JPH028876 A JP H028876A JP 16024688 A JP16024688 A JP 16024688A JP 16024688 A JP16024688 A JP 16024688A JP H028876 A JPH028876 A JP H028876A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- paper
- fixing device
- recording paper
- heating
- 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
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000723346 Cinnamomum camphora Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Landscapes
- Accessory Devices And Overall Control Thereof (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、記録装置等の記録用紙上のトナー像等を熱融
着す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 thermally fusing toner images and the like on recording paper of a recording device or the like.
本発明は、記録装置等の記録用紙上に形成されたトナー
像等を加熱して熱融着する熱定着器の構造で、加熱機能
をもった送りローラにより記録用紙に一次加熱を行ない
、紙に含まれる水分等を除去し、熱定着器内に配置され
ている円筒状のファンとヒータにより、非接触の熱融着
を二次加熱として行うことによって、加熱効率及び、記
録用紙の定着ムラをなくし、しかも融着行程の高速化を
可能とした物である。The present invention has a structure of a thermal fixing device that heats and thermally fuses a toner image formed on a recording paper of a recording device or the like. By removing moisture contained in the paper and performing non-contact thermal fusion as secondary heating using a cylindrical fan and heater placed in the heat fixing device, heating efficiency and uneven fixing of recording paper can be improved. This eliminates this problem and makes it possible to speed up the fusion process.
従来、第２図に示すような中空ローラ９にハロゲンラン
プ等のし−タ８を内蔵し用紙を加熱する接触方式熱定着
器や、第３図に示すように、外気を遮断するための槽部
１２と槽内を加熱するし−タｌＯ及び送りローラ１１を
有する非接触方式熱定着器が知られていた。Conventionally, there has been a contact type heat fixing device that heats the paper by having a heater 8 such as a halogen lamp built into a hollow roller 9 as shown in FIG. 2, and a tank for blocking outside air as shown in FIG. A non-contact type heat fixing device is known which includes a section 12, a heater for heating the inside of the tank, and a feed roller 11.
しかしながら周知の接触方式の熱定着器の場合、短時間
にトナー像等を熱融着することを利点としたが、その反
面、第２図に示すようにトナー等が融着時にローラ９に
付着し、記録紙を汚したり、トナーの種類によっては、
ローラ９に巻き付きジャムの発生原因になるなどの欠点
があった。However, in the case of the well-known contact type heat fixing device, the advantage is that the toner image can be thermally fused in a short time, but on the other hand, as shown in FIG. This may stain the recording paper, or depending on the type of toner,
It has disadvantages such as wrapping around the roller 9 and causing jams.
また、非接触方式熱定着器の場合、第３図に示すように
、槽部１２とヒータ１０と送りローラ１１で構成されて
いて、自然対流で加熱するので、槽内部の温度が著しく
不均一になり、それによって用紙全体を均一に定着させ
ることが困難であり、熱融着にかかる時間も、接触方式
熱定着器に比べて長いという欠点があった。In addition, in the case of a non-contact type heat fixing device, as shown in Fig. 3, it consists of a tank section 12, a heater 10, and a feed roller 11, and because it heats by natural convection, the temperature inside the tank is significantly uneven. As a result, it is difficult to uniformly fix the entire paper, and the time required for heat fusing is longer than that of a contact type heat fixing device.
第４図は、熱定着温度設定の一例を示すもので、横軸の
に紙の熱融着にかかる時間、縦軸０に紙の温度をパラメ
ータとして取り、温度０は記録用紙に含まれる水分等を
除去する温度、温度■は、記録用紙上に形成されたトナ
ー像等が熱融着を始める温度、温度０は、トナー１８１
等の熱融着を完了させるのに必要な温度を示す。Figure 4 shows an example of heat fusing temperature setting. The horizontal axis shows the time required for heat fusing the paper, and the vertical axis shows the temperature of the paper at 0. Temperature 0 is the moisture content in the recording paper. Temperature (2) is the temperature at which the toner image, etc. formed on the recording paper starts to be thermally fused, and temperature 0 is the temperature at which the toner image, etc. formed on the recording paper starts to be thermally fused.
Indicates the temperature required to complete the thermal fusion.
グラフＯは接触方式による紙の温度上昇のグラフを示す
が、接触方式による加熱では、温度上昇にかかる時間は
、短かいが、反面、先に述べた通り、記録用紙にダメー
ジを与えてしまう。Graph O shows a graph of the temperature rise of paper due to the contact method. Although heating by the contact method takes a short time to raise the temperature, on the other hand, as described above, it damages the recording paper.
グラフＰは、予備加熱を行わない非接触方式による紙の
温度上昇のグラフを示すが、定着器内に紙が入ると、ま
ず、紙に含まれている水分等の要因を除去するために、
紙に加わる熱量が消費され、その後に、記録用紙上のト
ナー像の熱融着のために熱量を必要とするために、実際
に熱定着が完了するまでにかかる時間は長くなり、また
、熱定着器のヒータが記録用紙の定着のために消費する
発熱量も大きくなる。Graph P shows a graph of the temperature rise of paper using a non-contact method that does not perform preheating. When paper enters the fixing device, first, in order to remove factors such as moisture contained in the paper,
The amount of heat applied to the paper is consumed, and then the amount of heat is required to thermally fuse the toner image on the recording paper, so the time it takes to actually complete the thermal fixing becomes longer, and the heat The amount of heat consumed by the heater of the fixing device for fixing the recording paper also increases.
そこで本発明の目的は、非接触方式の熱定着器において
均一なトナー像等の熱融着が行え、さらに、接触方式の
熱定着器の特長である熱効率の良さと、熱融着行程の高
速化機能もあわせてそなえ持つ熱定着器を提供するもの
である。Therefore, an object of the present invention is to be able to perform uniform heat fusing of toner images, etc. in a non-contact type heat fixing device, and to achieve high thermal efficiency and high speed of the heat fusing process, which are the features of a contact type heat fixing device. The purpose of the present invention is to provide a heat fixing device that also has a heating function.
〔課題を解決するための手段及び作用〕上記の問題点を
解決するために、本発明は、記録用紙が熱定着器内に入
る前に、ヒート送りローラ内に設置されたハロゲンラン
プ等のヒータによって加熱されたローラ表面と記録用紙
が接触することによって紙に含まれる水分等の熱効率の
さまたげになる要素を除去する一次加熱を行い強制対流
を起こすために円筒状ファンとヒータを収り付け、ファ
ンの羽根の回転運動による熱風の流れを、ガイド等によ
って閉ループ状態にした非接触方式熱定着器の槽内に一
次加熱の終った記録用紙を通し、二次加熱を行う。[Means and operations for solving the problem] In order to solve the above problems, the present invention provides a heater such as a halogen lamp installed in the heat feed roller before the recording paper enters the heat fixing device. A cylindrical fan and heater are installed in order to generate forced convection by performing primary heating that removes elements that impede thermal efficiency such as water contained in the paper by contacting the heated roller surface with the recording paper. The recording paper that has undergone primary heating is passed through a tank of a non-contact type thermal fixing device in which a flow of hot air generated by the rotation of the fan blade is made into a closed loop state by a guide, etc., to perform secondary heating.
この様に構成された熱定着器は、熱融着の行程中非接触
であるため記録紙上のトナー像が損傷を受けることがな
い、またヒーターの熱を円筒状ファンによって強制対流
を起こすため槽内の温度が均一になり、この熱風はファ
ンによって紙の幅方向に均一に加えられるために、紙に
対して均一な熱交換が行なわれ、その熱風の流れを閉ル
ープで循環させることによって、より熱効率が上げられ
る。The heat fixing device configured in this way does not cause any damage to the toner image on the recording paper because there is no contact during the heat fusing process. The temperature inside the paper becomes uniform, and this hot air is applied evenly across the width of the paper by the fan, so that uniform heat exchange is performed on the paper, and by circulating the flow of hot air in a closed loop, it is evenly heated. Thermal efficiency is increased.
以下、添付図を参照して本発明の好適な実施例を説明す
る。Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
第１図において、トナー現像が形成された記録用紙が、
ヒート送りローラ１によって圧接搬送される。この時、
ローラ表面との接触によって熱が紙に伝わり、紙内部に
ある水分等の熱融着時の効率低下につながる要因を、あ
らかじめ−次加熱として除去し、熱定着器に入る前の記
録用紙の状態を常に一定に保つ、−次加熱の終った紙は
熱定着器の槽内３に導かれる。槽内に入った記録用紙は
、プレート又はベルトから成る搬送部６の上を搬送され
、槽内に配置された円筒状ファン２などによって形成さ
れた内部を、循環する熱風の流れによって用紙表面に、
対流熱が加えられる。In FIG. 1, the recording paper on which the toner image has been formed is
It is pressed and conveyed by the heat feed roller 1. At this time,
Heat is transferred to the paper through contact with the roller surface, and factors that reduce efficiency during heat fusing, such as moisture inside the paper, are removed in advance through secondary heating, and the state of the recording paper before entering the heat fixing device is maintained. The heated paper is guided into the tank 3 of the heat fixing device. The recording paper that has entered the tank is transported on a transport unit 6 made of a plate or belt, and the paper surface is coated with a flow of hot air that circulates through an interior formed by a cylindrical fan 2 placed inside the tank. ,
Convective heat is added.
さらに、プレート又はベルトから成る搬送部の上を搬送
された記録用紙は、ヒータ４の下を通過するときに、ヒ
ータからの輻射熱が加えられた後、送りローラ５によっ
て槽外に排出される。Furthermore, when the recording paper is conveyed on the conveyance unit made of a plate or a belt, it is subjected to radiant heat from the heater when passing under the heater 4, and is then discharged out of the tank by the feed roller 5.
摺部３内における熱風の循環について詳細な説明を行う
と、第１図において槽内に配置されたファン２とヒータ
４の間にエアーガイド７を配置することによって、槽内
が上層部と下層部の２部に分かれる。A detailed explanation of the circulation of hot air in the sliding part 3 is as shown in FIG. It is divided into two parts.
熱風の流れは、ヒータによって温められた空気が、円筒
状ファン２が回転することによって、上層部より下１一
部へ流れ、プレー１へ又はベルトから成る搬送部６の表
面にそって流れ、再び構内上層部へ送り戻される。この
熱風の閉ループによる循環によって、効率よく均一に熱
流束を、記録用紙の熱定着に利用することができる。The flow of hot air is caused by the rotation of the cylindrical fan 2, which causes the air heated by the heater to flow from the upper part to a part of the lower part, to the play 1, or along the surface of the conveying part 6 consisting of a belt, He is sent back to the upper floors of the premises. By circulating the hot air in a closed loop, the heat flux can be efficiently and uniformly used for thermal fixing of the recording paper.
第４図は、先に述べた通り熱定着温度設定の一例を示す
もので、グラフＱは、予備加熱を行う非接触方式による
紙の温度上昇のグラフを示し、定着器に入る前に接触方
式のヒート送りローラ１によって圧接されながら、記録
用紙上のトナー像の熱融着温度には達しない８５°Ｃの
温度■まで加熱しながら送られることにより、記録用紙
内に含まれる水分等の熱効率のさまたげになる要因を一
次加熱として除去し、熱定着器に入る前の紙の状態を常
に一定に保つ。As mentioned above, Figure 4 shows an example of heat fixing temperature setting. Graph Q shows the temperature rise of paper using the non-contact method that performs preheating, and The heat efficiency of the water contained in the recording paper is reduced by heating it to a temperature of 85°C, which does not reach the thermal fusing temperature of the toner image on the recording paper while being pressed by the heat feed roller 1 of the recording paper. This eliminates the factors that interfere with paper flow through primary heating, and keeps the condition of the paper constant before it enters the heat fixing device.
その後で、二次加熱として記録用紙上に形成されたトナ
ー像等を熱融着させるために、紙の温度を、熱融着の完
了するのに必要な１１５℃まで上げる。Thereafter, in order to heat-fuse the toner image formed on the recording paper as secondary heating, the temperature of the paper is raised to 115° C., which is necessary to complete the heat-fusing.
この二次加熱は、非接触方式熱定着器の槽内で行われ、
槽内で紙に加わる熱量は、すべてトナー像の熱融着のた
めに消費される。This secondary heating is performed in the tank of the non-contact heat fixing device.
All of the heat applied to the paper in the tank is consumed for thermal fusing of the toner image.
この予備加熱を併用する方式は、ヒータの発熱ｉも小さ
くて済み、また記録用紙の熱定着にかかる時間も従来の
非接触方式熱定着器に比べて短かい。In this method of using preheating in combination, the heat generation i of the heater is small, and the time required for thermally fixing the recording paper is also shorter than that of a conventional non-contact type thermal fixing device.
本発明は、以上説明したように、熱定着器に記録紙が通
紙する前段階として、送りローラによって、紙を予備加
熱することにより、熱触着時に、効率低下をまねく要因
になる紙の水分等をあらかじめ除去し、その後で、円筒
状ファンとヒータを配置した槽をもつ非接触方式の熱定
着器内を通紙し、二次加熱を行う。As explained above, the present invention preheats the paper using the feed roller before passing the recording paper through the heat fixing device, thereby reducing the temperature of the paper, which is a factor that causes a decrease in efficiency when thermal contact occurs. Moisture etc. are removed in advance, and then the paper is passed through a non-contact type heat fixing device having a tank equipped with a cylindrical fan and a heater to perform secondary heating.
その結果、熱効率の良い加熱ができる様になり、定着ム
ラのない記録紙を得ることができ、さらに、融着行程の
高速化も実現できるという効果を得た。As a result, it became possible to perform heating with good thermal efficiency, and it was possible to obtain recording paper without uneven fixing, and furthermore, it was possible to achieve the effects of increasing the speed of the fusing process.
第１図は本発明にかかる非接触方式熱定着器の構成図、
第２図は従来の接触方式熱定着器の構成図、第３図は従
来の非接触方式熱定着器の構成図、第４図は熱定着温度
設定の一例の説明図である。
・ヒート送りローラ
・ファン
・ヒータ
・送りローラ
・エアガイド
以上
出願人 セイコー電子工業株式会社
代理人 弁理士 林 敬 之 助１芝米の非樟ρ
＝１１＼熱定苓２しの１１へ図纂 ３ 図FIG. 1 is a configuration diagram of a non-contact heat fixing device according to the present invention;
FIG. 2 is a block diagram of a conventional contact type heat fixing device, FIG. 3 is a block diagram of a conventional non-contact type heat fixing device, and FIG. 4 is an explanatory diagram of an example of heat fixing temperature setting.・Heat feed roller, fan, heater, feed roller, air guide Applicant Seiko Electronics Co., Ltd. Agent Patent attorney Takayuki Hayashi Suke 1 Grass rice non-camphor
=11＼Netsuseirei 2 Shino 11 diagram 3 Figure
Claims (1)
加熱手段と、記録用紙上に形成されたトナー像等を加熱
して熱融着させるために、 外気を遮断する槽部と、槽内部に配置されたファンと、
槽内部を加熱する二次加熱手段とを具備することを特徴
とする非接触方式熱定着器。[Claims] Primary heating means for removing moisture contained in recording paper of a recording device, etc., and shutting off outside air in order to heat and thermally fuse toner images formed on the recording paper. A tank part, a fan placed inside the tank,
A non-contact type heat fixing device characterized by comprising a secondary heating means for heating the inside of the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16024688A JPH028876A (en) | 1988-06-27 | 1988-06-27 | Non-contact type heat fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16024688A JPH028876A (en) | 1988-06-27 | 1988-06-27 | Non-contact type heat fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH028876A true JPH028876A (en) | 1990-01-12 |
Family
ID=15710859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16024688A Pending JPH028876A (en) | 1988-06-27 | 1988-06-27 | Non-contact type heat fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH028876A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007286260A (en) * | 2006-04-14 | 2007-11-01 | Ricoh Co Ltd | Image forming apparatus |
-
1988
- 1988-06-27 JP JP16024688A patent/JPH028876A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007286260A (en) * | 2006-04-14 | 2007-11-01 | Ricoh Co Ltd | Image forming apparatus |
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