JPH0954519A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH0954519A JPH0954519A JP21028495A JP21028495A JPH0954519A JP H0954519 A JPH0954519 A JP H0954519A JP 21028495 A JP21028495 A JP 21028495A JP 21028495 A JP21028495 A JP 21028495A JP H0954519 A JPH0954519 A JP H0954519A
- Authority
- JP
- Japan
- Prior art keywords
- printing paper
- roller
- heating
- heating roller
- guide member
- 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
Landscapes
- Resistance Heating (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、感光体上に形成された
静電潜像をトナー粒子にて顕像化し用紙に転写させ、熱
あるいは圧力にて定着する電子写真技術を応用した画像
形成装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming method using an electrophotographic technique in which an electrostatic latent image formed on a photoconductor is visualized by toner particles and transferred onto a sheet and fixed by heat or pressure. It relates to the device.
【０００２】[0002]
【従来の技術】近年、電子写真技術を応用した画像形成
装置は多くの複写機，ファクシミリ，レーザプリンタ等
として実用化され目ざましい発展をとげている。2. Description of the Related Art In recent years, image forming apparatuses to which electrophotographic technology is applied have been put to practical use as many copying machines, facsimiles, laser printers, etc. and have made remarkable progress.
【０００３】以下に従来の画像形成装置について説明す
る。図３は従来の画像形成装置の要部構成図である。図
３において、１は無端ベルト状のポリエチレンテレフタ
レート（ＰＥＴ）等を基材としてその外周面上にセレン
（Ｓｅ）あるいは有機光導電体（ＯＰＣ）等の感光性受
容層が薄層上に塗布された感光体であり、駆動ローラ３
と従動ローラ４とに架け渡されて矢印Ａ方向に回転す
る。２は無端ベルト状の中間転写体であり、駆動ローラ
７と従動ローラ８、９とに架け渡されて矢印Ｂ方向に回
転する。A conventional image forming apparatus will be described below. FIG. 3 is a configuration diagram of a main part of a conventional image forming apparatus. In FIG. 3, reference numeral 1 designates an endless belt-shaped polyethylene terephthalate (PET) or the like as a base material, and a photosensitive receiving layer such as selenium (Se) or an organic photoconductor (OPC) is applied on a thin layer on the outer peripheral surface thereof. Drive roller 3
And the driven roller 4 and is rotated in the direction of arrow A. Reference numeral 2 is an endless belt-shaped intermediate transfer member, which is spanned by a driving roller 7 and driven rollers 8 and 9 and rotates in a direction of an arrow B.
【０００４】５は中間転写体２の内面側に配置された転
写ローラであり、この転写ローラ５の押圧力によって中
間転写体２の表面と感光体１の表面とが接触している。
６は中間転写体２の表面上に形成されたトナー像を印字
用紙１１に転写するための転写ローラであり、転写時以
外は中間転写体２から離れている。Reference numeral 5 denotes a transfer roller arranged on the inner surface side of the intermediate transfer member 2, and the surface of the intermediate transfer member 2 and the surface of the photosensitive member 1 are in contact with each other by the pressing force of the transfer roller 5.
Reference numeral 6 denotes a transfer roller for transferring the toner image formed on the surface of the intermediate transfer body 2 to the printing paper 11, which is separated from the intermediate transfer body 2 except during transfer.
【０００５】１０Ｙ、１０Ｍ、１０Ｃ及び１０Ｂは感光
体１に対向配設した現像器であり、それぞれイエロー、
マゼンタ、シアン及びブラックのカラーのトナーを収容
している。１２は表面にシリコンゴム等を薄く被覆した
金属製の加熱ローラであり、内部にはヒータ１３が設け
られている。この加熱ローラ１２は側壁（図示せず）に
回転自在に枢支されており、駆動源（図示せず）によっ
て回転する。Designated by 10Y, 10M, 10C and 10B are developing units arranged opposite to the photoconductor 1, respectively, yellow,
It contains magenta, cyan, and black color toners. Reference numeral 12 is a metal heating roller whose surface is thinly coated with silicon rubber or the like, and a heater 13 is provided inside. The heating roller 12 is rotatably supported on a side wall (not shown) and is rotated by a driving source (not shown).
【０００６】１４は表面にふっ素樹脂皮膜を有するゴム
製の加圧ローラであり、付勢部材（図示せず）によって
加熱ローラ１２に圧接されている。１５は加熱ローラ１
２の表面温度を検知する温度検知器である。１６は温度
制御部で、温度検知器１５の検知温度に基づいてヒータ
１３の出力をヒータドライバ１７で調整することにより
加熱ローラ１２の表面温度を一定温度に保つ。１８はガ
イド部材である。１９は定着装置外への印字用紙１１の
排出検知センサである。Reference numeral 14 denotes a rubber pressure roller having a fluororesin film on its surface, which is pressed against the heating roller 12 by an urging member (not shown). 15 is a heating roller 1
2 is a temperature detector for detecting the surface temperature. Reference numeral 16 is a temperature control unit, which maintains the surface temperature of the heating roller 12 at a constant temperature by adjusting the output of the heater 13 by the heater driver 17 based on the temperature detected by the temperature detector 15. Reference numeral 18 is a guide member. Reference numeral 19 denotes a discharge detection sensor for the printing paper 11 outside the fixing device.
【０００７】以上のように構成された画像形成装置につ
いて、以下その動作を説明する。印字が開始されて露光
手段（図示せず）によって感光体１上にイエローの成分
に対応する潜像が書き込まれる。この潜像をイエローの
トナーを収容した現像器１０Ｙによって顕画化する。顕
画化されたトナー像は、電圧が印加された転写ローラ５
によって中間転写体２に転写される。同様にして感光体
１の表面上に形成されたマゼンタ、シアン及びブラック
のトナー像も中間転写体２上に重ね合わせるように転写
され、中間転写体２の表面上に１つの合成トナー像が形
成される。The operation of the image forming apparatus constructed as above will be described below. Printing is started, and a latent image corresponding to the yellow component is written on the photoconductor 1 by the exposing means (not shown). This latent image is visualized by the developing device 10Y containing yellow toner. The visualized toner image is transferred to the transfer roller 5 to which a voltage is applied.
Is transferred to the intermediate transfer body 2. Similarly, the magenta, cyan, and black toner images formed on the surface of the photoconductor 1 are also transferred so as to be superimposed on the intermediate transfer body 2, and a single synthetic toner image is formed on the surface of the intermediate transfer body 2. To be done.
【０００８】この合成トナー像は、電圧が印加された転
写ローラ６によって印字用紙１１に転写される。合成ト
ナー像が転写された印字用紙１１は、ガイド部材１８に
案内されて加熱ローラ１２と加圧ローラ１４との間を通
過する。このとき表面温度が制御温度に安定した加熱ロ
ーラ１２によって合成トナー像は溶融され、同時に加熱
ローラ１２と加圧ローラ１４とによって圧接されること
によって印字用紙１１に定着される。This composite toner image is transferred onto the printing paper 11 by the transfer roller 6 to which a voltage is applied. The printing paper 11 to which the synthetic toner image is transferred is guided by the guide member 18 and passes between the heating roller 12 and the pressure roller 14. At this time, the synthetic toner image is melted by the heating roller 12 whose surface temperature is stabilized at the control temperature, and at the same time, the heating roller 12 and the pressure roller 14 are pressed against each other to be fixed on the printing paper 11.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら上記従来
の画像形成装置では、待機中の加圧ローラ１４の表面温
度が加熱ローラ１２の表面温度より低いので、加熱ロー
ラ１２が回転を始めると一時的に加熱ローラ１２の表面
温度が低下し、その後制御温度に復帰する。加熱ローラ
１２の表面温度が定着に十分な温度に復帰しないうちに
印字用紙１１が通過すると定着性能が劣り、画質が低く
なるという問題点を有していた。However, in the above-mentioned conventional image forming apparatus, the surface temperature of the pressure roller 14 in the standby state is lower than the surface temperature of the heating roller 12, and therefore, when the heating roller 12 starts to rotate, The surface temperature of the heating roller 12 decreases, and then returns to the control temperature. If the printing paper 11 passes before the surface temperature of the heating roller 12 returns to a temperature sufficient for fixing, there is a problem that the fixing performance is deteriorated and the image quality is deteriorated.
【００１０】また、低温環境下では印字用紙１１の温度
が低いためにトナーが十分に溶融せず、定着不良が発生
し易いという問題点を有していた。この問題点を解決す
るために制御温度を高くする方法が知られている。しか
しながらこの方法は、加熱ローラ１２の表面層の高温劣
化が起こりやすく、加熱ローラ１２の寿命が短くなると
いう新たな問題点を有している。また、定着温度が高い
と溶融トナーの粘度が低くなるのでオフセット防止オイ
ルの塗布量が多くなり、定着器の大型化とメンテナンス
の複雑化という新たな問題点を有している。Further, in a low temperature environment, since the temperature of the printing paper 11 is low, the toner is not sufficiently melted, and there is a problem that fixing failure is likely to occur. To solve this problem, a method of raising the control temperature is known. However, this method has a new problem that the surface layer of the heating roller 12 is likely to deteriorate at high temperature and the life of the heating roller 12 is shortened. Further, when the fixing temperature is high, the viscosity of the molten toner becomes low, so that the amount of the offset preventing oil applied increases, and there are new problems that the fixing device becomes large and maintenance becomes complicated.
【００１１】本発明は上記従来の問題点を解決するもの
であり、加熱ローラの表面温度の一時的な低下による画
質の低下と低温環境下での画質低下を起こさない定着装
置を備えた画像形成装置を提供することを目的とする。The present invention solves the above-mentioned conventional problems, and an image forming apparatus is provided with a fixing device that does not cause deterioration of image quality due to temporary decrease of the surface temperature of the heating roller and deterioration of image quality in a low temperature environment. The purpose is to provide a device.
【００１２】[0012]
【課題を解決するための手段】この目的を達成するため
に本発明の画像形成装置は、記録媒体上に形成されたト
ナー像を加熱し記録媒体に定着する加熱手段と、加熱手
段とともに記録媒体を挟持して搬送する加圧手段と、記
録媒体を加熱手段に案内する光を透過可能なガイド部材
と、加圧手段へガイド部材を介して記録媒体へ同時に赤
外線を照射する赤外線照射手段と、記録媒体のガイド部
材への進入から加熱手段の通過までの間、赤外線照射手
段から赤外線を照射させる制御手段を備えたものであ
る。To achieve this object, an image forming apparatus of the present invention comprises a heating means for heating a toner image formed on a recording medium and fixing the toner image on the recording medium, and a recording medium together with the heating means. A pressing means for sandwiching and transporting the recording medium, a guide member capable of transmitting light for guiding the recording medium to the heating means, and an infrared irradiating means for simultaneously irradiating the recording medium with infrared rays through the guide member to the pressing means, A control means for irradiating infrared rays from the infrared irradiating means is provided between the time when the recording medium enters the guide member and the time when the recording medium passes through.
【００１３】[0013]
【作用】本発明は上記構成により、印字用紙の加熱圧接
部到達以前に加圧ローラと印字用紙が加熱されるので、
加熱ローラの表面温度を速やかに復帰させることがで
き、また低温環境下での印字用紙の温度を高くすること
ができる。According to the present invention, the pressure roller and the printing paper are heated before the printing paper reaches the heating / pressing contact portion because of the above structure.
The surface temperature of the heating roller can be quickly restored, and the temperature of the printing paper in a low temperature environment can be increased.
【００１４】[0014]
【実施例】以下、本発明の一実施例について、図面を参
照しながら説明する。図１は本発明の一実施例における
画像形成装置の要部構成図である。ここで従来例と同じ
ものについては同じ符号を付与している。図１におい
て、１は無端ベルト状のポリエチレンテレフタレート
（ＰＥＴ）等を基材としてその外周面上にセレン（Ｓ
ｅ）あるいは有機光導電体（ＯＰＣ）等の感光性受容層
が薄層上に塗布された感光体であり、駆動ローラ３と従
動ローラ４とに架け渡されて矢印Ａ方向に回転する。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of essential parts of an image forming apparatus according to an embodiment of the present invention. Here, the same components as those in the conventional example are given the same reference numerals. In FIG. 1, reference numeral 1 designates an endless belt-shaped polyethylene terephthalate (PET) or the like as a base material and selenium (S) on the outer peripheral surface thereof.
e) or a photoconductor in which a photosensitive receiving layer such as an organic photoconductor (OPC) is applied on a thin layer, and the photoconductor is bridged between the driving roller 3 and the driven roller 4 and rotated in the direction of arrow A.
【００１５】２は無端ベルト状の中間転写体であり、駆
動ローラ７と従動ローラ８、９とに架け渡されて矢印Ｂ
方向に回転する。５は中間転写体２の内面側に配置され
た転写ローラであり、この転写ローラ５の押圧力によっ
て中間転写体２の表面と感光体１の表面とが接触してい
る。６は中間転写体２の表面上に形成されたトナー像を
印字用紙１１に転写するための転写ローラであり、転写
時以外は中間転写体２から離れている。Reference numeral 2 denotes an endless belt-shaped intermediate transfer member, which is bridged between a driving roller 7 and driven rollers 8 and 9 and indicated by an arrow B.
Rotate in the direction. Reference numeral 5 denotes a transfer roller arranged on the inner surface side of the intermediate transfer member 2, and the surface of the intermediate transfer member 2 and the surface of the photosensitive member 1 are in contact with each other by the pressing force of the transfer roller 5. Reference numeral 6 denotes a transfer roller for transferring the toner image formed on the surface of the intermediate transfer body 2 to the printing paper 11, which is separated from the intermediate transfer body 2 except during transfer.
【００１６】１０Ｙ、１０Ｍ、１０Ｃ及び１０Ｂは感光
体１に対向配設した現像器であり、それぞれイエロー、
マゼンタ、シアン及びブラックのカラーのトナーを収容
している。１２は表面にシリコンゴム等を薄く被覆した
金属製の加熱ローラであり、内部にはヒータ１３が設け
られている。この加熱ローラ１２は側壁（図示せず）に
回転自在に枢支されており、駆動源（図示せず）によっ
て回転する。１４は表面にふっ素樹脂皮膜を有するゴム
製の加圧ローラであり、付勢部材（図示せず）によって
加熱ローラ１２に圧接されている。１５は加熱ローラ１
２の表面温度を検知する温度検知器である。１６は温度
制御部で、温度検知器１５の検知温度に基づいてヒータ
１３の出力をヒータドライバ１７で調整することにより
加熱ローラ１２の表面温度を一定温度に保つ。２１はガ
イド部材、２２はハロゲン電球、２３は印字用紙１１の
ガイド部材２１への進入検知センサである。ハロゲン電
球２２は加熱ローラ１２および加圧ローラ１４の上流に
配設されており、また進入検知センサ２３はガイド部材
１による印字用紙１１の搬送路の途中に配設されてい
る。１９は定着装置外への印字用紙１１の排出検知セン
サである。Designated by 10Y, 10M, 10C and 10B are developing units which are arranged opposite to the photosensitive member 1, respectively, yellow,
It contains magenta, cyan, and black color toners. Reference numeral 12 is a metal heating roller whose surface is thinly coated with silicon rubber or the like, and a heater 13 is provided inside. The heating roller 12 is rotatably supported on a side wall (not shown) and is rotated by a driving source (not shown). Reference numeral 14 denotes a rubber pressure roller having a fluororesin film on its surface, which is pressed against the heating roller 12 by an urging member (not shown). 15 is a heating roller 1
2 is a temperature detector for detecting the surface temperature. Reference numeral 16 is a temperature control unit, which maintains the surface temperature of the heating roller 12 at a constant temperature by adjusting the output of the heater 13 by the heater driver 17 based on the temperature detected by the temperature detector 15. Reference numeral 21 is a guide member, 22 is a halogen bulb, and 23 is a sensor for detecting the entry of the printing paper 11 into the guide member 21. The halogen light bulb 22 is arranged upstream of the heating roller 12 and the pressure roller 14, and the entry detection sensor 23 is arranged in the middle of the conveyance path of the printing paper 11 by the guide member 1. Reference numeral 19 denotes a discharge detection sensor for the printing paper 11 outside the fixing device.
【００１７】図２は本発明の一実施例における画像形成
装置のガイド部材の斜視図である。ガイド部材２１の用
紙ガイド面はスリット２４が形成され、ハロゲン電球２
２からの赤外線はスリット２４を通して直接印字用紙１
１に照射される。FIG. 2 is a perspective view of a guide member of the image forming apparatus according to the embodiment of the present invention. A slit 24 is formed on the paper guide surface of the guide member 21, and the halogen bulb 2
Infrared rays from 2 directly pass through slit 24 and print paper 1
1 is irradiated.
【００１８】以上のように構成された画像形成装置につ
いて、以下その動作を説明する。印字が開始されて露光
手段（図示せず）によって感光体１上にイエローの成分
に対応する潜像が書き込まれる。この潜像をイエローの
トナーを収容した現像器１０Ｙによって顕画化する。顕
画化されたトナー像は、電圧が印加された転写ローラ５
によって中間転写体２に転写される。同様にして感光体
１の表面上に形成されたマゼンタ、シアン及びブラック
のトナー像も中間転写体２上に重ね合わせるように転写
され、中間転写体２の表面上に１つの合成トナー像が形
成される。The operation of the image forming apparatus constructed as above will be described below. Printing is started, and a latent image corresponding to the yellow component is written on the photoconductor 1 by the exposing means (not shown). This latent image is visualized by the developing device 10Y containing yellow toner. The visualized toner image is transferred to the transfer roller 5 to which a voltage is applied.
Is transferred to the intermediate transfer body 2. Similarly, the magenta, cyan, and black toner images formed on the surface of the photoconductor 1 are also transferred so as to be superimposed on the intermediate transfer body 2, and a single synthetic toner image is formed on the surface of the intermediate transfer body 2. To be done.
【００１９】この合成トナー像は、電圧が印加された転
写ローラ６によって印字用紙１１に転写される。合成ト
ナー像が転写された印字用紙１１は、ガイド部材２１に
案内されて加熱ローラ１２と加圧ローラ１４との間を通
過する。このとき表面温度が制御温度に安定した加熱ロ
ーラ１２によって合成トナー像は溶融され、同時に加熱
ローラ１２と加圧ローラ１４とによって圧接されること
によって印字用紙１１に定着される。進入検知センサ２
３が印字用紙１１を検知するとハロゲン電球２２がオン
され、赤外線が照射される。赤外線は加圧ローラ１４に
と、ガイド部材２１のスリット２４を通して印字用紙１
１に照射され、加圧ローラ１４の表面と印字用紙１１を
加熱する。排出検知センサ１９が印字用紙１１の定着装
置外への排出を検知するとハロゲン電球２２がオフさ
れ、赤外線の照射が止まる。This synthetic toner image is transferred onto the printing paper 11 by the transfer roller 6 to which a voltage is applied. The printing paper 11 to which the synthetic toner image is transferred is guided by the guide member 21 and passes between the heating roller 12 and the pressure roller 14. At this time, the synthetic toner image is melted by the heating roller 12 whose surface temperature is stabilized at the control temperature, and at the same time, the heating roller 12 and the pressure roller 14 are pressed against each other to be fixed on the printing paper 11. Approach detection sensor 2
When 3 detects the printing paper 11, the halogen bulb 22 is turned on and infrared rays are emitted. The infrared rays pass through the pressure roller 14 and the slit 24 of the guide member 21 and the printing paper 1
1 to heat the surface of the pressure roller 14 and the printing paper 11. When the discharge detection sensor 19 detects the discharge of the print sheet 11 to the outside of the fixing device, the halogen bulb 22 is turned off and the irradiation of infrared rays is stopped.
【００２０】したがって、印字用紙１１のガイド部材２
１への進入から印字用紙１１の定着装置外への排出まで
の間加圧ローラ１４と印字用紙１１が加熱され温度が上
がるので、加熱ローラ１２の表面温度は速やかに復帰
し、また低温環境下での印字用紙１１の温度は高くな
り、加熱ローラ１２の表面温度の一時的な低下による画
質の低下と低温環境下での画質低下は起こらない。Therefore, the guide member 2 for the printing paper 11
Since the pressure roller 14 and the printing paper 11 are heated and the temperature rises from the time when the printing paper 11 is ejected to the outside of the fixing device, the surface temperature of the heating roller 12 quickly recovers, and the surface temperature of the heating roller 12 is low. In this case, the temperature of the printing paper 11 becomes high, and the deterioration of the image quality due to the temporary decrease of the surface temperature of the heating roller 12 and the deterioration of the image quality in the low temperature environment do not occur.
【００２１】以上のように本実施例によれば印字用紙１
１を加熱圧接部に案内する光を透過可能なガイド部材２
１と、加圧ローラ１４へと、ガイド部材２１を介して印
字用紙１１へ同時に赤外線を照射するハロゲン電球２２
と、印字用紙１１のガイド部材２１への進入から印字用
紙１１の定着装置外への排出までの間、ハロゲン電球２
２から赤外線を照射させる制御手段を備えることによ
り、印字用紙１１の加熱圧接部到達以前に加圧ローラ１
４と印字用紙１１が加熱されるので、加熱ローラ１２の
表面温度の一時的な低下による画質の低下と低温環境下
での画質低下を防ぐことができる。As described above, according to this embodiment, the printing paper 1
A guide member 2 capable of transmitting light for guiding 1 to the heating press contact portion.
1 and a halogen lamp 22 that simultaneously irradiates the pressure roller 14 and the printing paper 11 with infrared rays through the guide member 21.
And the halogen light bulb 2 between the time when the printing paper 11 enters the guide member 21 and the time when the printing paper 11 is discharged to the outside of the fixing device.
By providing the control means for irradiating infrared rays from the pressure roller 2, the pressure roller 1 is provided before reaching the heating pressure contact portion of the printing paper 11.
4 and the printing paper 11 are heated, it is possible to prevent the deterioration of the image quality due to the temporary decrease of the surface temperature of the heating roller 12 and the deterioration of the image quality in the low temperature environment.
【００２２】なお上記実施例において、加熱手段を加熱
ローラ１２としたが加熱ベルトでもよい。ガイド部材２
１はスリット２４によって光を透過可能にしているが、
その手段は実施例に限定されない。また、印字用紙１１
のガイド部材２１への進入から印字用紙１１の加熱ロー
ラ１２の通過までの検知手段は、実施例に限定されない
のは言うまでもない。Although the heating means is the heating roller 12 in the above embodiment, it may be a heating belt. Guide member 2
1 has a slit 24 for transmitting light,
The means is not limited to the embodiment. In addition, the printing paper 11
It goes without saying that the detecting means from the entry into the guide member 21 to the passage of the print sheet 11 through the heating roller 12 is not limited to the embodiment.
【００２３】[0023]
【発明の効果】以上のように本発明によれば、印字用紙
の加熱圧接部到達以前に加圧ローラと印字用紙が加熱さ
れるので、加熱ローラの表面温度を速やかに復帰させる
ことができ、また低温環境下での印字用紙の温度を高く
することができるので、加熱ローラの表面温度の一時的
な低下による画質の低下と低温環境下での画質低下は起
こらず安定して高画質画像を得ることができる。As described above, according to the present invention, since the pressure roller and the printing paper are heated before reaching the heating and pressure contact portion of the printing paper, the surface temperature of the heating roller can be quickly restored, In addition, since the temperature of the printing paper can be raised in a low temperature environment, the image quality will not deteriorate due to the temporary decrease in the surface temperature of the heating roller, and the image quality will not deteriorate in a low temperature environment. Obtainable.
【図１】本発明の一実施例における画像形成装置の要部
構成図FIG. 1 is a configuration diagram of a main part of an image forming apparatus according to an embodiment of the present invention.
【図２】本発明の一実施例における画像形成装置のガイ
ド部材の斜視図FIG. 2 is a perspective view of a guide member of the image forming apparatus according to the embodiment of the present invention.
【図３】従来の画像形成装置の要部構成図FIG. 3 is a configuration diagram of main parts of a conventional image forming apparatus.
１１ 印字用紙 １２ 加熱ローラ １４ 加圧ローラ ２１ ガイド部材 ２２ ハロゲン電球 11 Printing Paper 12 Heating Roller 14 Pressure Roller 21 Guide Member 22 Halogen Bulb
Claims (1)
て定着させる加熱手段と、この加熱手段とともに前記記
録媒体を挟持して搬送する加圧手段と、前記記録媒体を
前記加熱手段に案内する光を透過可能なガイド部材と、
前記加圧手段へ前記ガイド部材を介して前記記録媒体へ
同時に赤外線を照射する赤外線照射手段と、前記記録媒
体のガイド部材への進入から前記加熱手段の通過までの
間、前記赤外線照射手段から赤外線を照射させる制御手
段を備えたことを特徴とする画像形成装置。1. A heating means for heating and fixing a toner image formed on a recording medium, a pressing means for nipping and conveying the recording medium together with the heating means, and the recording medium for the heating means. A guide member capable of transmitting the light to be guided,
Infrared irradiation means for irradiating the pressurizing means with infrared rays to the recording medium at the same time via the guide member, and infrared rays from the infrared irradiation means during the period from the entrance of the recording medium into the guide member to the passage of the heating means. An image forming apparatus comprising a control means for irradiating the image forming apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21028495A JPH0954519A (en) | 1995-08-18 | 1995-08-18 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21028495A JPH0954519A (en) | 1995-08-18 | 1995-08-18 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0954519A true JPH0954519A (en) | 1997-02-25 |
Family
ID=16586858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21028495A Pending JPH0954519A (en) | 1995-08-18 | 1995-08-18 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0954519A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009104114A (en) * | 2007-10-24 | 2009-05-14 | Samsung Electronics Co Ltd | Fixing device and image forming apparatus having the same |
| US7711280B2 (en) | 2005-10-25 | 2010-05-04 | Ricoh Company, Ltd. | Image forming apparatus, fixation device and heat control method for a fixation device |
-
1995
- 1995-08-18 JP JP21028495A patent/JPH0954519A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7711280B2 (en) | 2005-10-25 | 2010-05-04 | Ricoh Company, Ltd. | Image forming apparatus, fixation device and heat control method for a fixation device |
| JP2009104114A (en) * | 2007-10-24 | 2009-05-14 | Samsung Electronics Co Ltd | Fixing device and image forming apparatus having the same |
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