JPH04318584A - Fixing device - Google Patents
Fixing deviceInfo
- Publication number
- JPH04318584A JPH04318584A JP8538891A JP8538891A JPH04318584A JP H04318584 A JPH04318584 A JP H04318584A JP 8538891 A JP8538891 A JP 8538891A JP 8538891 A JP8538891 A JP 8538891A JP H04318584 A JPH04318584 A JP H04318584A
- Authority
- JP
- Japan
- Prior art keywords
- fixing
- release agent
- amount
- roller
- coating
- 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
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 62
- 239000011248 coating agent Substances 0.000 claims description 28
- 238000000576 coating method Methods 0.000 claims description 28
- 229920003002 synthetic resin Polymers 0.000 claims description 10
- 239000002952 polymeric resin Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 27
- WXOMTJVVIMOXJL-BOBFKVMVSA-A O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)OS(=O)(=O)OC[C@H]1O[C@@H](O[C@]2(COS(=O)(=O)O[Al](O)O)O[C@H](OS(=O)(=O)O[Al](O)O)[C@@H](OS(=O)(=O)O[Al](O)O)[C@@H]2OS(=O)(=O)O[Al](O)O)[C@H](OS(=O)(=O)O[Al](O)O)[C@@H](OS(=O)(=O)O[Al](O)O)[C@@H]1OS(=O)(=O)O[Al](O)O Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)O.O[Al](O)OS(=O)(=O)OC[C@H]1O[C@@H](O[C@]2(COS(=O)(=O)O[Al](O)O)O[C@H](OS(=O)(=O)O[Al](O)O)[C@@H](OS(=O)(=O)O[Al](O)O)[C@@H]2OS(=O)(=O)O[Al](O)O)[C@H](OS(=O)(=O)O[Al](O)O)[C@@H](OS(=O)(=O)O[Al](O)O)[C@@H]1OS(=O)(=O)O[Al](O)O WXOMTJVVIMOXJL-BOBFKVMVSA-A 0.000 abstract 2
- 230000035897 transcription Effects 0.000 abstract 2
- 238000013518 transcription Methods 0.000 abstract 2
- 239000006082 mold release agent Substances 0.000 description 20
- 239000000057 synthetic resin Substances 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 4
- 229920002379 silicone rubber Polymers 0.000 description 4
- 239000004945 silicone rubber Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229920000784 Nomex Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Coating Apparatus (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、複写機及びレーザビー
ムプリンタ等の画像記録装置に使用される定着用回転体
を備えた定着装置に関するものであり、特に定着用回転
体の表面上に離型剤を塗布する塗布装置が設けられた定
着装置に関するものである。[Field of Industrial Application] The present invention relates to a fixing device equipped with a fixing rotary body used in image recording devices such as copying machines and laser beam printers. The present invention relates to a fixing device equipped with a coating device for coating a molding agent.
【０００２】0002
【従来の技術】従来この種の定着装置としては、乾式の
粉体現像剤を使用する場合は、定着ローラーと加圧ロー
ラーとの間に顕像を載せた支持体を通過させる熱ローラ
ー定着器が広く用いられている。この種の定着器では定
着ローラーへの微粒粉（トナー）の融着が起きやすく（
これをオフセツト現象という）、このオフセツト現象を
防止するために定着ローラーの顕像と接触する表面の材
質として表面自由エネルギーが小さい物質、例えばシリ
コンゴムやテフロン（商品名）などを用い更にその表面
にオフセツト防止用の離型剤の膜を形成する方法が用い
られている。[Prior Art] Conventionally, when using a dry powder developer, this type of fixing device is a heat roller fixing device in which a support carrying a developed image is passed between a fixing roller and a pressure roller. is widely used. In this type of fuser, fine powder (toner) tends to adhere to the fuser roller (
In order to prevent this offset phenomenon, a material with low surface free energy, such as silicone rubber or Teflon (trade name), is used as the material for the surface of the fixing roller that comes into contact with the developing image. A method of forming a film of a mold release agent to prevent offset is used.
【０００３】図３は従来の定着装置の離型剤塗布系の概
略図を示したもので、回転可能な定着ローラー１と、こ
の定着ローラー１に圧接しながら回転する加圧ローラー
２と、定着ローラー１の表面に離型剤を供給する脱着可
能な塗布装置３と定着ローラー１の表面上に付着したト
ナーや紙粉をクリーニングするクリーニングウエーブ４
の構成になっている。定着ローラー１は今属性パイプの
表面にシリコンゴム、フツ素ゴムを被覆した構造になっ
ている。加圧ローラー２は金属ローラーの表面にＨＴＶ
シリコーンゴムを設け、その表面にフツ素コートをした
ものである。定着ローラー、加圧ローラーの内部にはハ
ロゲンランプ等のヒータが配置されている。また加圧ロ
ーラー２にはサーミスタ２ａが接触しており温度調節回
路を介してヒータへの電圧を制御することによりローラ
ーを温調している。これらのローラー１、２は不図示の
装置本体に矢印方向回転自在に軸支されている。塗布装
置３は離型剤としてシリコーンオイルを収納した離型剤
槽３ａとそこから離型剤を汲み上げる汲み上げローラー
３ｂと離型剤を定着ローラー１に塗布する塗布ローラー
３ｃと、離型剤の塗布量を制御するためのブレード３ｄ
から構成されている。塗布ローラー３ｃは回転可能でス
ポンジゴムの表面にＬＴＶシリコーンゴムを被覆してあ
り、定着ローラー１に接触して離型剤を塗布している。
離型剤の塗布量はブレード３ｄにより調整されいかなる
種類の転写材が搬送されてきた場合でも一定の塗布量で
転写材の先端から後端まで塗布している。クリーニング
ウエーブ４はノーメツクスフエルト４ａを使用しており
、定着ローラー１に圧接して、ローラーのクリーニング
を行なっている。この状態において、入口ガイド５ａを
通った転写材が定着ローラー１と加圧ローラー２との間
を通過すると転写材はローラー１、２で表裏両面から加
熱、加圧され表面に担持した未定着トナーが溶融して定
着される。FIG. 3 shows a schematic diagram of a release agent application system of a conventional fixing device, in which a rotatable fixing roller 1, a pressure roller 2 that rotates while being in pressure contact with the fixing roller 1, and a fixing roller A detachable applicator 3 that supplies a release agent to the surface of the roller 1 and a cleaning wave 4 that cleans toner and paper dust adhering to the surface of the fixing roller 1.
The structure is as follows. The fixing roller 1 has a structure in which the surface of a fixing pipe is coated with silicone rubber or fluorine rubber. The pressure roller 2 has HTV on the surface of the metal roller.
It is made of silicone rubber and its surface is coated with fluorine. A heater such as a halogen lamp is arranged inside the fixing roller and the pressure roller. Further, a thermistor 2a is in contact with the pressure roller 2, and the temperature of the roller is controlled by controlling the voltage applied to the heater via a temperature control circuit. These rollers 1 and 2 are rotatably supported by an apparatus main body (not shown) so as to be rotatable in the direction of the arrow. The coating device 3 includes a mold release agent tank 3a that stores silicone oil as a mold release agent, a pumping roller 3b that pumps up the mold release agent from there, a coating roller 3c that applies the mold release agent to the fixing roller 1, and a mold release agent coating. Blade 3d to control quantity
It consists of The application roller 3c is rotatable and has a sponge rubber surface coated with LTV silicone rubber, and contacts the fixing roller 1 to apply a release agent. The amount of release agent applied is adjusted by the blade 3d, so that no matter what kind of transfer material is being conveyed, a constant amount of release agent is applied from the leading edge to the trailing edge of the transfer material. The cleaning wave 4 is made of nomex felt 4a, and is brought into pressure contact with the fixing roller 1 to clean the roller. In this state, when the transfer material that has passed through the entrance guide 5a passes between the fixing roller 1 and the pressure roller 2, the transfer material is heated and pressed from both the front and back sides by the rollers 1 and 2, and the unfixed toner carried on the surface is heated and pressed. is melted and fixed.
【０００４】0004
【発明が解決する問題点】従来の上記の様な離型剤塗布
装置においては、離型剤の塗布量は転写材の種類によら
ず、一定量に制御されていた。しかしながらこの一定量
というのは普通紙を定着する場合の適正量であり、特殊
紙を定着する場合は、適正量とは言えず、塗布量は多く
なってしまうか、又は少なくなってしまう。その結果例
えばＯＨＰシートを定着する場合には離型剤層が多くな
ってしまい、画像の透過性が悪く、全体にくもった様に
見えてしまい、同時にラベル紙を定着する場合にも離型
剤が多い為、離型剤が転写材の表面に浮き出てしまい、
良好な画像が得られない。[Problems to be Solved by the Invention] In the conventional release agent applicator as described above, the amount of release agent applied is controlled to be a constant amount regardless of the type of transfer material. However, this fixed amount is an appropriate amount when fixing plain paper, but it cannot be said to be an appropriate amount when fixing special paper, and the amount applied may be increased or decreased. As a result, for example, when fixing an OHP sheet, the number of release agent layers increases, resulting in poor image transparency and a cloudy appearance; Because of this, the release agent will stand out on the surface of the transfer material,
A good image cannot be obtained.
【０００５】[0005]
【問題点を解決する手段】上記問題点を解決する本発明
は、少なくとも定着用回転体を備え該定着用回転体にて
転写材上に定着画像を形成させる定着装置において前記
定着用回転体に接触および非接触状態に移動可能であり
、且つ前記定着用回転体表面に離型剤を塗布することの
できる塗布装置を具備し、転写材の種類に応じて離型剤
塗布量を可変することによって、塗布量が適正量と異な
ることを特徴とする定着装置である。[Means for Solving the Problems] The present invention, which solves the above-mentioned problems, provides a fixing device that includes at least a fixing rotary body and forms a fixed image on a transfer material with the fixing rotary body. A coating device is provided that is movable between contact and non-contact states and is capable of applying a release agent to the surface of the fixing rotor, and the amount of release agent applied is varied according to the type of transfer material. This fixing device is characterized in that the amount of application differs from the appropriate amount.
【０００６】[0006]
【実施例】図１は図３の定着装置における離型剤塗布装
置３の概略図で前記図３と同一部分には同一符号を付し
て説明を省略する。図３においては離型剤塗布量を調節
するブレード３ｄを図の様に、ブレードの端部を塗布ロ
ーラー３ｃに押し当てることによって離型剤塗布量を一
定の状態にしている。図１は図３に比べ塗布ローラー３
ｃへのブレード３ｄの押し当て角を変化させたものでブ
レードの腹部を塗布ローラー３ｃに押し当て、離型剤塗
布量を一定の状態にしている。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram of a release agent coating device 3 in the fixing device shown in FIG. 3, and the same parts as those in FIG. In FIG. 3, the end of the blade 3d for adjusting the amount of release agent applied is pressed against the application roller 3c as shown in the figure, so that the amount of release agent applied is kept constant. Figure 1 shows the applicator roller 3 compared to Figure 3.
By changing the angle at which the blade 3d is pressed against the roller 3c, the abdomen of the blade is pressed against the application roller 3c, and the amount of release agent applied is kept constant.
【０００７】図１に示した様にブレード３ｄを塗布ロー
ラー３ｃに押し当てた場合は離型剤塗布量は図３に示し
たブレード３ｄの押し当て方による離型剤塗布量に比べ
多くなる。このように塗布ローラー３ｃへのブレード３
ｄの押し当て方によって、転写材の種類に応じて離型剤
塗布量を変化させるということが本実施例である。すな
わち普通紙を定着する場合、図１の様な押し当て方とし
、ＯＨＰシートやラベル紙のような離型剤を少なくしな
ければならないような転写材を定着する場合は、図３の
様な押し当て方として離型剤塗布量を少なくすることを
特徴とした離型剤塗布装置である。When the blade 3d is pressed against the coating roller 3c as shown in FIG. 1, the amount of release agent applied is larger than the amount of release agent applied when the blade 3d is pressed as shown in FIG. In this way, the blade 3 is applied to the coating roller 3c.
In this embodiment, the amount of release agent applied is changed depending on the type of transfer material by the pressing method d. In other words, when fixing plain paper, use the pressing method as shown in Figure 1, and when fixing transfer materials such as OHP sheets and label paper that require less release agent, use the pressing method as shown in Figure 3. This is a mold release agent application device characterized by reducing the amount of mold release agent applied in the pressing method.
【０００８】特にカラー画像形成装置においては、トナ
ー層がマゼンタ、イエロー及びシアンの３層及びそれ以
上の層となり、その上該トナーは熱を印加した際の溶融
性、混色性が良いことが必要であり軟化点が低く且つ溶
融粘度の低いシヤープメルト性のトナーを使用すること
が好ましく定着ローラーの寿命を保障するにあたり、低
粘度の離型剤を多量に塗布する必要がある。このため適
正値と異なる離型剤の塗布量は、画像上に明確に現れ、
特にＯＨＰシートにおいては塗布量過多の場合、透化性
を著しく低下させてしまうため、塗布量を適正値に制御
することにより著しく画質が改善される。In particular, in a color image forming apparatus, the toner layer has three or more layers of magenta, yellow, and cyan, and the toner needs to have good melting properties and color mixing properties when heat is applied. Therefore, it is preferable to use a sharp-melt toner having a low softening point and low melt viscosity.In order to ensure the life of the fixing roller, it is necessary to apply a large amount of a low-viscosity release agent. For this reason, the amount of mold release agent applied that differs from the appropriate value will clearly appear on the image.
Particularly in the case of OHP sheets, if the coating amount is too large, the transparency will be significantly reduced, so controlling the coating amount to an appropriate value will significantly improve the image quality.
【０００９】本実施例では普通紙を定着する場合、図１
の様な押し当て角で押し当て離型剤塗布量を、０．１ｇ
／Ａ４としＯＨＰシート及びラベル紙を定着する場合は
図３の様な押し当て角で押し当て離型剤塗布量を０．０
０２ｇ／Ａ４として定着を行なった結果前述の課題は解
決された。In this embodiment, when fixing plain paper, the image shown in FIG.
Press with a pressing angle such as 0.1g.
/ When fixing OHP sheets and label paper with A4 size, press at the pressing angle as shown in Figure 3 and apply the release agent amount to 0.0.
As a result of fixing as 02g/A4, the above-mentioned problem was solved.
【００１０】本実施例においては離型剤塗布量を上記の
値で実施したがローラー、トナー、塗布装置などの種類
に応じて塗布量の適正値を選択するため特に上記の値に
は規定はしないが、塗布量の範囲としては普通紙を定着
する場合は０．０２〜０．５ｇ／Ａ４、ＯＨＰシート及
びラベル紙を定着する場合は０．０１〜０．０２ｇ／Ａ
４の範囲とすることにより特に良好な結果が得られた。In this example, the amount of release agent applied was set to the above value, but since the appropriate value of the amount of application was selected depending on the type of roller, toner, coating device, etc., there are no regulations for the above value. However, the coating amount range is 0.02 to 0.5 g/A4 when fixing plain paper, and 0.01 to 0.02 g/A when fixing OHP sheets and label paper.
Particularly good results were obtained by using a range of 4.
【００１１】図２は定着装置における離型剤塗布装置の
概略図で定着ローラー１とそれに接触して回転する離型
剤塗布ローラー３ｃと離型材を収納した離型剤槽３ａと
、離型剤中に一部を侵したフエルト状から成る離型剤供
給部材３ｅと塗布ローラー３ｃに離型剤を塗布する高分
子合成樹脂膜３ｆとから構成されている。本実施例では
高分子合成樹脂膜３ｆにポアフロン（住友電工登録商標
）を用いた。図２において離型剤供給部材３ｅおよび高
分子合成樹脂膜３ｆの塗布ローラー３ｃへの押し当て圧
を大きくした場合、離型剤塗布量は多くなり、押し当て
圧を小さくした場合、離型剤塗布量は少なくなる。この
ように離型剤供給部材３ｅおよび高分子合成樹脂膜３ｆ
の塗布ローラー３ｃへの押し当て圧を変化させることに
より転写材の種類に応じて離型剤塗布量を変化させると
いうのが本実施例である。FIG. 2 is a schematic diagram of a release agent applicator in a fixing device, showing a fixing roller 1, a release agent applicator 3c rotating in contact with the fixing roller 1, a release agent tank 3a containing a release agent, and a release agent tank 3a containing a release agent. It is composed of a mold release agent supplying member 3e made of felt with a partially corroded interior, and a polymeric synthetic resin film 3f for applying the mold release agent to the application roller 3c. In this embodiment, POREFLON (registered trademark of Sumitomo Electric Industries, Ltd.) was used for the polymer synthetic resin film 3f. In FIG. 2, when the pressing pressure of the mold release agent supply member 3e and the polymeric synthetic resin film 3f against the application roller 3c is increased, the amount of mold release agent applied increases, and when the pressing pressure is decreased, the mold release agent is applied The amount of application will be less. In this way, the mold release agent supply member 3e and the polymer synthetic resin film 3f
In this embodiment, the application amount of the release agent is changed depending on the type of transfer material by changing the pressing pressure against the application roller 3c.
【００１２】本実施例では普通紙を定着する場合は離型
剤供給部材３ｅおよび高分子合成樹脂膜３ｆの押し当て
圧を３０ｇ／ｃｍ２として離型剤塗布量を０．１ｇ／Ａ
４としＯＨＰシートおよびラベル紙を定着する場合は押
し当て圧を１５ｇ／ｃｍ２として離型剤塗布量を０．０
２ｇ／Ａ４として定着を行なった結果前述の課題は解決
された。In this embodiment, when fixing plain paper, the pressing pressure of the release agent supplying member 3e and the polymer synthetic resin film 3f is 30 g/cm2, and the amount of the release agent applied is 0.1 g/A.
4, and when fixing OHP sheets and label paper, the pressing pressure is 15 g/cm2 and the amount of release agent applied is 0.0.
As a result of fixing at 2g/A4, the above-mentioned problem was solved.
【００１３】本実施例においては、高分子樹脂膜の押し
当て圧、及び離型剤塗布量を上記の値で実施したが、ロ
ーラー、トナー、塗布装置などの種類に応じて押し当て
圧、塗布量は適正値を選択するため、特に上記の値には
規制はしない。その範囲としては普通紙を定着する場合
は押し当て圧を１５〜５０ｇ／ｃｍ２とし離型剤塗布量
を０．０２〜０．５ｇ／Ａ４とする。ＯＨＰシート及び
ラベル紙を定着する場合は押し当て圧を０．１〜１５ｇ
／ｃｍ２とし、離型剤塗布量を０．０１〜０．０２ｇ／
Ａ４とする。In this example, the pressing pressure of the polymer resin film and the amount of release agent applied were set to the above values, but the pressing pressure and application amount may vary depending on the type of roller, toner, coating device, etc. Since the amount is selected at an appropriate value, there are no particular restrictions on the above values. As for the range, when fixing plain paper, the pressing pressure is 15 to 50 g/cm 2 and the amount of release agent applied is 0.02 to 0.5 g/A4. When fixing OHP sheets and label paper, apply a pressing pressure of 0.1 to 15 g.
/cm2, and the amount of mold release agent applied is 0.01 to 0.02g/cm2.
Make it A4.
【００１４】図１及び図３と同様な構造をもち定着速度
が、普通紙を定着する場合には８０ｍｍ／ｓｅｃであり
ＯＨＰシートやラベル紙を定着する場合には４０ｍｍ／
ｓｅｃに減速する様な定着装置の離型剤塗布装置におい
て、図１及び図３と同様に塗布ローラー３ｃへのブレー
ド３ｄの押し当て方によって記録材の種類に応じて離型
剤塗布量を変化させるというのが本実施例である。すな
わち普通紙を定着する場合図１の様な押し当て方とし、
ＯＨＰシートやラベル紙を定着する場合は図３の様な押
し当て方として離型剤塗布量を少なくすることを特徴と
した離型剤塗布装置である。It has a structure similar to that shown in FIGS. 1 and 3, and the fixing speed is 80 mm/sec when fixing plain paper, and 40 mm/sec when fixing OHP sheets and label paper.
In a release agent coating device of a fixing device that is decelerated in seconds, the amount of release agent applied is changed depending on the type of recording material by the way the blade 3d is pressed against the coating roller 3c, as shown in FIGS. 1 and 3. In this embodiment, this is done. In other words, when fixing plain paper, use the pressing method shown in Figure 1,
When fixing an OHP sheet or a label paper, this release agent coating device is characterized in that the pressing method shown in FIG. 3 reduces the amount of release agent applied.
【００１５】本実施例では普通紙を定着する場合、図１
の様な押し当て角で押し当て離型剤塗布量を０．１ｇ／
Ａ４とし、ＯＨＰシート及びラベル紙を定着する場合は
図３の様な押し当て角で押し当て離型剤塗布量を０．０
２ｇ／Ａ４として定着を行なった結果、前述の課題は解
決された。In this embodiment, when fixing plain paper, the image shown in FIG.
Press with a pressing angle such as 0.1g/application amount of release agent.
When fixing A4 sheets and OHP sheets and label paper, press at the pressing angle as shown in Figure 3 and apply the amount of release agent to 0.0.
As a result of fixing at 2g/A4, the above-mentioned problem was solved.
【００１６】本実施例においては離型剤塗布量を上記の
値で実施したが、ローラー、トナー、塗布装置などの種
類に応じて塗布量は適正値を選択するため、特に上記の
値には規定はしないが、塗布量の範囲としては普通紙を
定着する場合は０．０２〜０．５ｇ／Ａ４、ＯＨＰシー
ト及びラベル紙を定着する場合は、０．０１〜０．０２
ｇ／Ａ４の範囲とする。In this example, the amount of release agent applied was set to the above value, but since the amount of application is selected to be an appropriate value depending on the type of roller, toner, coating device, etc., Although there are no regulations, the range of coating amount is 0.02 to 0.5 g/A4 when fixing plain paper, and 0.01 to 0.02 when fixing OHP sheets and label paper.
g/A4 range.
【００１７】図２と同様な構造をもち定着速度が普通紙
を定着する場合には８０ｍｍ／ｓｅｃであり、ＯＨＰシ
ートやラベル紙を定着する場合には４０ｍｍ／ｓｅｃに
減速する様な定着装置の離型剤塗布装置において、図２
と同様に離型剤供給部材３ｅ及び高分子合成樹脂膜であ
るポアフロンシート３ｆの塗布ローラへの押し当て圧を
変化させることにより転写材の種類に応じて離型剤塗布
量を変化させるというのが本実施例である。The fixing device has a structure similar to that shown in FIG. 2, and the fixing speed is 80 mm/sec when fixing plain paper, and decelerates to 40 mm/sec when fixing OHP sheets or label paper. In the mold release agent application device, Figure 2
Similarly, by changing the pressing pressure of the release agent supply member 3e and the POREFLON sheet 3f, which is a polymeric synthetic resin film, against the application roller, the amount of release agent applied is changed depending on the type of transfer material. This is the present example.
【００１８】本実施例では普通紙を定着する場合は、離
型剤供給部材３ｅおよび高分子合成樹脂膜３ｆの押し当
て圧を３０ｇ／ｃｍ２として離型剤塗布量を０．１ｇ／
Ａ４とし、ＯＨＰシートおよびラベル紙を定着する場合
は押し当て圧を１５ｇ／ｃｍ２として離型剤塗布量を０
．０２ｇ／Ａ４として定着を行なった結果、前述の課題
は解決された。本実施例においては、高分子樹脂膜の押
し当て圧、及び離型剤塗布量を上記の値で実施したが、
ローラー、トナー、離型剤塗布装置などの種類に応じて
押し当て圧、塗布量は適正値を選択するため、特に上記
の値は規定しない。その範囲としては、普通紙を定着す
る場合は押し当て圧を１５〜５０ｇ／ｃｍ２とし、離型
剤塗布量を０．０２〜０．５ｇ／Ａ４とする。ＯＨＰシ
ート及びラベル紙を定着する場合は押し当て圧を０．１
〜１５ｇ／ｃｍ２とし、離型剤塗布量を０．０１〜０．
０２ｇ／Ａ４とする。In this embodiment, when fixing plain paper, the pressing pressure of the release agent supplying member 3e and the polymer synthetic resin film 3f is 30 g/cm2, and the amount of the release agent applied is 0.1 g/cm2.
When fixing A4 OHP sheets and label paper, use a pressing pressure of 15 g/cm2 and a release agent application amount of 0.
．． As a result of fixing as 02g/A4, the above-mentioned problem was solved. In this example, the pressing pressure of the polymer resin film and the amount of mold release agent applied were set to the above values.
Since appropriate values for the pressing pressure and coating amount are selected depending on the type of roller, toner, release agent coating device, etc., the above values are not particularly defined. As for the range, when fixing plain paper, the pressing pressure is 15 to 50 g/cm 2 and the amount of release agent applied is 0.02 to 0.5 g/A4. When fixing OHP sheets and label paper, set the pressing pressure to 0.1.
~15g/cm2, and the amount of mold release agent applied is 0.01~0.
02g/A4.
【００１９】[0019]
【発明の効果】以上説明したように、転写材の種類に応
じて離型剤塗布量を変化させることにより、ＯＨＰシー
ト及びラベル紙を定着する際の離型剤塗布量が適正値と
なりＯＨＰシートの場合は定着後の画像に光沢が出て、
透過性が良くなり離型剤過多による紙のベタツキがなく
なった。またラベル紙の場合も定着後、離型剤が転写材
の表面に浮きでることがなくなり離型剤による紙のベタ
ツキがなくなった。同時にＯＨＰシート及びラベル紙を
定着する際離型剤塗布量を減少させることにより離型剤
の節約の効果がある。[Effects of the Invention] As explained above, by changing the amount of release agent applied depending on the type of transfer material, the amount of release agent applied when fixing OHP sheets and label paper can be adjusted to an appropriate value. In this case, the image becomes glossy after fixing,
The permeability is improved and the paper is no longer sticky due to too much release agent. Also, in the case of label paper, the release agent no longer floats on the surface of the transfer material after fixing, and the paper no longer becomes sticky due to the release agent. At the same time, by reducing the amount of release agent applied when fixing OHP sheets and label paper, there is an effect of saving release agent.
【図１】本発明の実施例の定着装置の断面図である。FIG. 1 is a sectional view of a fixing device according to an embodiment of the present invention.
【図２】本発明の別の実施例の定着装置の断面図である
。FIG. 2 is a sectional view of a fixing device according to another embodiment of the present invention.
【図３】従来の定着装置の断面図である。FIG. 3 is a sectional view of a conventional fixing device.
１ 定着ローラー ２ 加圧ローラー ３ 離型剤塗布装置 ４ クリーニングウエーブ ２ａ サーミスタ ３ａ 離型剤槽 ３ｂ 汲み上げローラー ３ｃ 塗布ローラー ３ｄ ブレード 1 Fixing roller 2 Pressure roller 3 Release agent coating device 4 Cleaning wave 2a Thermistor 3a Mold release agent tank 3b Pumping roller 3c Application roller 3d blade
Claims (3)
着用回転体にて記録材上に定着画像を形成させる定着装
置に於て前記定着用回転体に接触及び非接触状態に移動
可能であり、且つ前記定着用回転体表面に離型剤を塗布
することのできる塗布装置を具備し、各記録材の種類に
応じて離型剤の塗布量を制御することを特徴とする定着
装置。1. A fixing device that includes at least a fixing rotary body and that forms a fixed image on a recording material with the fixing rotary body, the fixing device being movable into and out of contact with the fixing rotary body. A fixing device comprising: a coating device capable of coating a release agent on the surface of the fixing rotor, and controlling the amount of the release agent applied depending on the type of each recording material.
塗布装置に於て塗布用回転体を有し、該塗布用回転体に
当接するブレードの当接角による特許請求の範囲第１項
記載の定着装置。2. The control means for controlling the amount of the release agent applied includes a coating rotating body in the coating device, and is controlled by a contact angle of a blade that comes into contact with the coating rotating body. Fixing device as described in section.
塗布装置に於てフエルト状の毛管現象による離型剤塗布
装置を有し該フエルトの定着用回転体との接触部に塗布
量調整部材である高分子樹脂膜を隔着せしめ、該塗布量
調整部材の定着用回転体への当接圧による特許請求の範
囲第１項記載の定着装置。3. The release agent application amount control means includes a release agent application device that uses a felt-like capillary action in the application device, and controls the amount of application to the contact portion of the felt with the fixing rotating body. 2. The fixing device according to claim 1, wherein a polymer resin film serving as an adjusting member is attached at a distance, and the contact pressure of the coating amount adjusting member to the fixing rotating body is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8538891A JPH04318584A (en) | 1991-04-17 | 1991-04-17 | Fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8538891A JPH04318584A (en) | 1991-04-17 | 1991-04-17 | Fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04318584A true JPH04318584A (en) | 1992-11-10 |
Family
ID=13857369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8538891A Pending JPH04318584A (en) | 1991-04-17 | 1991-04-17 | Fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04318584A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06208262A (en) * | 1993-01-08 | 1994-07-26 | Fuji Xerox Co Ltd | Image forming device |
| US5563695A (en) * | 1992-09-30 | 1996-10-08 | Canon Kabushiki Kaisha | Image forming apparatus for preventing release agent from being adhered onto image carrier |
| EP0864941A1 (en) * | 1997-03-14 | 1998-09-16 | Agfa-Gevaert N.V. | System for application of fuser oil to a fusing unit |
-
1991
- 1991-04-17 JP JP8538891A patent/JPH04318584A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5563695A (en) * | 1992-09-30 | 1996-10-08 | Canon Kabushiki Kaisha | Image forming apparatus for preventing release agent from being adhered onto image carrier |
| JPH06208262A (en) * | 1993-01-08 | 1994-07-26 | Fuji Xerox Co Ltd | Image forming device |
| EP0864941A1 (en) * | 1997-03-14 | 1998-09-16 | Agfa-Gevaert N.V. | System for application of fuser oil to a fusing unit |
| US5987293A (en) * | 1997-03-14 | 1999-11-16 | Agfa-Gervaert N.V. | System for application of fuser oil to a fusing unit |
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