JPS6319688A - Fixing device - Google Patents
Fixing deviceInfo
- Publication number
- JPS6319688A JPS6319688A JP16430186A JP16430186A JPS6319688A JP S6319688 A JPS6319688 A JP S6319688A JP 16430186 A JP16430186 A JP 16430186A JP 16430186 A JP16430186 A JP 16430186A JP S6319688 A JPS6319688 A JP S6319688A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- roller
- fixing device
- porous
- rubber
- 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
- 229920001971 elastomer Polymers 0.000 claims abstract description 19
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 17
- 239000011148 porous material Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims 3
- 238000005498 polishing Methods 0.000 claims 1
- 239000013464 silicone adhesive Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 229920002379 silicone rubber Polymers 0.000 abstract description 10
- 239000004945 silicone rubber Substances 0.000 abstract description 10
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract description 3
- 229920001296 polysiloxane Polymers 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 229920002545 silicone oil Polymers 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/206—Structural details or chemical composition of the pressure elements and layers thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
- Control Of Resistance Heating (AREA)
- Coating Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は定着装置詳しくは例えばＰＰＣ複写機、ファク
シミリ、ラインプリンター等に用Ｇｓる定着装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fixing device, and more particularly to a fixing device for use in, for example, PPC copying machines, facsimile machines, line printers, and the like.
（従来技術）
例えば第２図に示す様に、コピー紙（１）ｔて転写され
たトナー（２）を加熱定着ローラ（３）（通常１６０℃
〜２００℃）と加圧弾性ローラ（４）の間を通すことに
よってコピー紙に焼き付ける方式の定着装置に於いて、
加圧弾性ローラとしては通常金属又はプラスチックロー
ラにシリコンゴムをかぶせた所謂ゴムローラが使われる
。(Prior art) For example, as shown in FIG.
In a fixing device that prints on copy paper by passing it between a pressurized elastic roller (4) and a pressurized elastic roller (4),
As the pressure elastic roller, a so-called rubber roller, which is a metal or plastic roller covered with silicone rubber, is usually used.
この場合ゴムの離型性を上げるために次のような方法が
とられている。In this case, the following methods are used to improve the releasability of the rubber.
■ 予メシリコンゴムをシリコンオイルにつｈａ潤させ
ておく。■ Soak the prepared silicone rubber in silicone oil.
■ シリコンゴムに弗素樹脂をコーティングする。■ Coating silicone rubber with fluororesin.
■ シリコンゴムに弗素樹脂の収縮チューブをかぶせる
。■ Cover the silicone rubber with a fluororesin shrink tube.
なお加熱定着ローラとしては、従来金属の表面に弗素樹
脂をコーティングしてトナーとの離型性を上げたものや
、シリコンゴムをかぶせて弾性をもたせ更にシリコンオ
イル等の離型油を塗布してトナーとの離型性をもたせた
ものが使われている。Conventionally, heat fixing rollers have been made by coating the metal surface with fluororesin to improve release properties from toner, or by covering it with silicone rubber to give it elasticity and then applying a release oil such as silicone oil. A material that has releasability from toner is used.
なお又定着装置にはコピー紙をはがすための分離爪（５
）や、定着ローラ表面に付着したトナーのクリーナとし
て弗素ゴム等からなるブレード（６）がつく。なお（７
）はヒータ、（８）は離型剤塗布装置である。Furthermore, the fixing device has a separation claw (5) for peeling off the copy paper.
), and a blade (6) made of fluororubber or the like is attached as a cleaner for toner adhering to the surface of the fixing roller. In addition (7
) is a heater, and (8) is a release agent coating device.
（発明が解決しようとする問題点）
しかし乍ら上記の定着装置の加圧弾性ローラには未だ下
記の様な間頂点がある。(Problems to be Solved by the Invention) However, the pressure elastic roller of the above fixing device still has the following peaks.
上記■（シリコンオイルにつけるもの）については、
シリコンオイルを含浸していても、数万枚でなくなり、
定着ローラに付着したトナーが加圧ローラに回って加圧
ローラの表面にこひりつき寿命となる。As for the item ■ (applied to silicone oil) above, even if it is impregnated with silicone oil, it will only last in the tens of thousands.
The toner adhering to the fixing roller circulates around the pressure roller and sticks to the surface of the pressure roller, ending its lifespan.
■（弗素樹脂をコーティングするもの）については、 弗素樹脂のコーティングが数万枚で剥離してしまう。■For (products coated with fluororesin), The fluororesin coating peels off after tens of thousands of sheets.
■（弗素樹脂の収縮チューブをかぶせるもの）について
は、
ゴムの硬度が硬くなる。シリコンゴムの硬度が４０度で
もかぶせたものでは７０〜８０度になる。加圧ローラの
表面が硬いと加熱ローラとのニップ幅が狭くなりトナー
のコピー紙への定着性が悪くなる。■For items covered with fluororesin shrink tubes, the hardness of the rubber increases. Even if the hardness of silicone rubber is 40 degrees, it will be 70 to 80 degrees when covered. If the surface of the pressure roller is hard, the nip width between the pressure roller and the heating roller will be narrow, resulting in poor fixation of toner onto copy paper.
上記に鑑み本発明はこのような問題点を解消するため開
発されたものである。In view of the above, the present invention has been developed to solve these problems.
（問題点を解決するための手段）
即ち本発明に於いては、加圧ローラとして、第１図の様
に金属、プラスチック等のローラ芯（１０）上にゴム層
（１１）を設けてなるゴムローラの外周面に、ポリテト
ラフルオロエチレン樹脂（ＰＴＦＥ）の多孔質層（１２
）を設け、更にその外周面に弗素樹脂の無孔質層（１３
）を設けたものを用いたことを特徴とするものである。(Means for Solving the Problems) That is, in the present invention, as a pressure roller, a rubber layer (11) is provided on a roller core (10) made of metal, plastic, etc., as shown in FIG. A porous layer (12
), and a non-porous layer of fluororesin (13
).
上記ＰＴＦＥ多孔質層は、ＰＴＦＥ多孔質膜をローラの
回転方向と逆方向に何層か巻き付ける（接着剤を実用す
る等する）か、あるいは薄肉のＰＴＦＥ多孔質チューブ
をかぶせる（熱収縮により接着するか、更に接着力が小
さい場合は接着剤を使用する等する）ことにより形成す
る。The above PTFE porous layer can be formed by wrapping several layers of PTFE porous membrane in the opposite direction to the rotational direction of the roller (using adhesive, etc.), or by covering it with a thin PTFE porous tube (adhering by heat shrinking). (or, if the adhesive strength is even weaker, use an adhesive, etc.).
ＰＴＦＥ多孔質体の特性は孔径が０，１μｒｒＬ〜１０
μｍ、多孔度が５０φ〜９０％のものを用い、多孔質層
の厚みは１ｍｍ以下とする。またＰＴＦＥ多孔質膜は出
来るだけ薄い方が良く１００μｍ以下の厚みのシートが
最適である。The characteristics of the PTFE porous material are that the pore diameter is 0.1μrrL to 10
A material with a porosity of 50 φ to 90% is used, and the thickness of the porous layer is 1 mm or less. Further, the PTFE porous membrane should be as thin as possible, and a sheet having a thickness of 100 μm or less is optimal.
父上記弗素樹脂無孔質層は、厚みが数十μｍのＰＦＡｌ
ＦＥＰ等の溶融性の弗素樹脂で、ＰＴＦＥ多孔質体と加
熱融着によって接合する。The above fluororesin nonporous layer is made of PFAl with a thickness of several tens of μm.
A meltable fluororesin such as FEP is bonded to the PTFE porous body by heat fusion.
（作用）
上記に於いては、最外層を無孔質の弗素樹脂、巷として
いることにより、トナーは多孔質のＰＴＦＥの孔の中に
は入り込まない。従ってトナーの離型性を長期にわたっ
てよ（維持出来る。又無孔質の弗素樹脂層の下側には多
孔質のＰＴＦＥ層を設けているのでゴムの表面硬度がか
ぶせる前後でほとんど変わらない。従ってトナーのコピ
ー紙への定着性を良くすることが出来る。(Function) In the above case, since the outermost layer is made of a non-porous fluororesin, the toner does not enter into the pores of the porous PTFE. Therefore, the releasability of the toner can be maintained for a long period of time.Also, since a porous PTFE layer is provided below the non-porous fluororesin layer, the surface hardness of the rubber remains almost the same before and after being covered. It is possible to improve the fixation of toner on copy paper.
なお本発明の適用に当っては、第２図に於いて定着ロー
ラ（３）に例えば芯金に弗素樹脂を数十μｍコーティン
グしたものを、加圧ローラ（４）に前記第１図に示すゴ
ムローラの外周面にＰＴＦＥの多孔質層、更に弗素樹脂
の無孔質層を設けたものを用いる。In applying the present invention, the fixing roller (3) shown in FIG. 2 is coated with, for example, a core bar coated with a fluororesin to a thickness of several tens of micrometers, and the pressure roller (4) shown in FIG. 1 is used. A rubber roller provided with a porous layer of PTFE and a non-porous layer of fluororesin on the outer peripheral surface is used.
なお又第１図のゴム層（１０）は発泡体でもよい。Furthermore, the rubber layer (10) in FIG. 1 may be a foam.
（実施例）
上記本発明の理解を助けるために以下にその実施例を述
べる。(Example) In order to assist in understanding the above-mentioned present invention, examples thereof will be described below.
第１図の様に、アルミニウム芯金（１０）に０．５ ｗ
ｎ厚さのシリコンゴム層（１１）を設けたローラに厚さ
が６０μｍ１孔径が０．５μｍ１多孔度か６０％の特公
昭４２−１３５６０号（液状潤滑剤を含む未焼結のＰＴ
ＦＥ樹脂混和物を押出、圧延にて成形した後、未焼結状
態にて少くとも一方向に延伸した状態で約３２７℃以上
に加熱する）にて作成したＰＴＦＥ多孔質膜（１２）
（、住友電工製：商品名、ボアフロン″）をシリコン系
の接着剤を用いてロー°うの回転方向と逆方向にしかも
膜の延伸方向と巻き付は方向を一致させて一層だけ巻い
てシリコンゴムとはり合わせて巻付端末を研摩仕上げし
て更に厚さ２５μｍのＦＥＰのフィルムを１重その上か
ら巻き、表面温度が６２０℃の加熱ローラと圧着させて
ＰＴＦＥ多孔質膜に加熱融着する。As shown in Figure 1, 0.5 W is applied to the aluminum core (10).
A roller having a silicone rubber layer (11) with a thickness of
A porous PTFE membrane (12) created by extruding and rolling an FE resin mixture, then heating it to about 327°C or higher while stretching it in at least one direction in an unsintered state.
(manufactured by Sumitomo Electric Industries, Ltd., trade name, Boa-Fron'') using a silicone-based adhesive, wrap only one layer of silicone in the opposite direction to the rotational direction of the row, and in the same direction as the stretching direction of the membrane. Glue it with rubber, polish the wrapping end, wrap a layer of FEP film with a thickness of 25 μm over it, and press it with a heating roller with a surface temperature of 620°C to heat-fuse it to the PTFE porous membrane. .
こうして加圧ローラを作成した。なお長さくＬ）＝ ３
３０ ｒｒａｎであった。これを用いて第１図のような
定着装置を組んだ。In this way, a pressure roller was created. In addition, length L) = 3
It was 30 rran. Using this, a fixing device as shown in FIG. 1 was assembled.
トナー（２）の転写されたコピー紙（１）を２つのロー
ラ（３）、（４）間に通して定着したところトナーの加
圧ローラへの付着はなく、画質の良いコピー紙が得られ
た。また１０万枚通紙後もローラへの紙の巻き付きやロ
ーラ表面の摩耗もなくまだ充分に使用可能な状態であっ
た。When the copy paper (1) on which the toner (2) was transferred was passed between the two rollers (3) and (4) and fixed, the toner did not adhere to the pressure roller and copy paper with good image quality was obtained. Ta. Further, even after passing 100,000 sheets, the roller was still in a usable condition with no paper wrapping around the roller or wear on the roller surface.
なお上記のＰＴＦＥ多孔質膜に代え、特公昭４２−１３
５６０号又は特願昭５０−１５５２２６号の製造法にて
ＰＴＦＥ多孔質チューブを（このチューブの特性は内径
ｐ ３０ ｒｒｒｎ 、肉厚０．３膿で気孔率が８０％
、孔径が２μｍであった）、父上記アルミニウム芯金の
弾性体層のゴムに代え、発泡シリコンゴム（アスカ−硬
度は２０度であった）を用いた加圧ローラを、同じよう
に定着装置にセットし評価テストを行ったところ同様の
効果が得られた。In addition, instead of the above-mentioned PTFE porous membrane,
560 or Japanese Patent Application No. 50-155226 (the characteristics of this tube are an inner diameter of p 30 rrrn, a wall thickness of 0.3 mm, and a porosity of 80%).
, the pore diameter was 2 μm), and a pressure roller using foamed silicone rubber (Asker hardness was 20 degrees) instead of the rubber in the elastic layer of the aluminum core metal was used in the fixing device in the same way. When we conducted an evaluation test with the settings set to , similar effects were obtained.
（発明の効果）
以上本発明を説明したが、それは下記のような利点を有
している。(Effects of the Invention) The present invention has been described above, and it has the following advantages.
■ 最外層が弗素樹脂の無孔質層であるためトナーや紙
粉の付着がない。従って寿命が長い。■ Since the outermost layer is a nonporous layer of fluororesin, there is no adhesion of toner or paper dust. Therefore, it has a long lifespan.
■ ゴムローラの外周面ＫＰＴＦＥの多孔質層に介して
上記弗素樹脂の無孔質層があるためゴムローラの長所で
ある弾性を保っておりトナーのコピー紙への定着性がよ
い。(2) Since the non-porous layer of fluororesin is present on the outer circumferential surface of the rubber roller through the porous layer of KPTFE, the elasticity which is the advantage of the rubber roller is maintained, and the toner fixability to the copy paper is good.
第１図は本発明の定着装置の加圧ローラの正面図（図（
ａ））と断面図（図（ｂ））、第２図は定着装置を説明
する図を夫々例示している。
（１）・・・コピー紙、（２）・・・トナー、（３）・
・・加熱定着ローラ、（４）・・・加圧弾性ローラ、（
８）・・・離型剤塗布装置、
（１０）・・・金属或いはプラスチックから成るローラ
芯、（１１）・・・ゴム層、（１２）・・・ＰＴＦＥ多
孔質層、（１３）・・・弗素樹脂無孔質層
、ｆ １ 図
（ａ） （ｂ）
オ ２ 図FIG. 1 is a front view of the pressure roller of the fixing device of the present invention.
a)), a sectional view (FIG. 2(b)), and FIG. 2 each illustrate a diagram for explaining the fixing device. (1) Copy paper, (2) Toner, (3)
...Heat fixing roller, (4)...Pressure elastic roller, (
8)... Release agent coating device, (10)... Roller core made of metal or plastic, (11)... Rubber layer, (12)... PTFE porous layer, (13)...・Fluororesin nonporous layer, f 1 Figure (a) (b) O 2 Figure
Claims (3)
転写されたトナーを加熱定着する定着装置に於いて、加
圧ローラとして、金属、プラスチック等のローラ芯上に
ゴム層を設けてなるゴムローラの外周面に、ポリテトラ
フルオロエチレン樹脂の多孔質層を設け更にその外周面
に弗素樹脂の無孔質層を設けたものを用いたことを特徴
とする定着装置。(1) In a fixing device that heats and fixes toner transferred to copy paper through a gap between a fixing roller and a pressure roller, a rubber roller that is made of metal, plastic, etc. and has a rubber layer on a roller core serves as the pressure roller. 1. A fixing device comprising: a porous layer of polytetrafluoroethylene resin on the outer peripheral surface of the fixing device; and a non-porous layer of fluororesin on the outer peripheral surface of the fixing device.
層下側の、ポリテトラフルオロエチレン樹脂の多孔質層
を、シート厚が０．０３ｍｍ〜１．０ｍｍ、多孔度が５
０％〜９０％、孔径が１０μｍ以下の該樹脂の多孔質シ
ートをシリコン系の接着剤にてシートの延伸方向とロー
ラの円周方向が一致するようにしかもローラの回転方向
と逆方向に巻いてゴムと接着し、巻き端末を研摩仕上げ
して設けた特許請求の範囲第（１）項記載の定着装置。(2) A porous layer of polytetrafluoroethylene resin on the outer peripheral surface of the rubber roller, below the outermost nonporous layer of fluororesin, has a sheet thickness of 0.03 mm to 1.0 mm, and a porosity of 5.
A porous sheet of the resin with a pore size of 0% to 90% and a pore diameter of 10 μm or less is wound with a silicone adhesive so that the stretching direction of the sheet coincides with the circumferential direction of the roller, and in the opposite direction to the rotational direction of the roller. The fixing device according to claim 1, wherein the fixing device is provided by adhering to rubber and polishing the end of the winding.
層下側に、ポリテトラフルオロエチレン樹脂の多孔質層
を、肉厚が０．０３ｍｍ〜１ｍｍ、多孔度が５０％〜９
０％、孔径が１０μｍ以下の該樹脂の多孔質チューブを
かぶせて設けた特許請求の範囲第（１）項記載の定着装
置。(3) A porous layer of polytetrafluoroethylene resin is placed on the outer peripheral surface of the rubber roller, below the outermost non-porous layer of fluororesin, with a thickness of 0.03 mm to 1 mm and a porosity of 50% to 9.
The fixing device according to claim 1, wherein the fixing device is provided with a porous tube made of the resin having a pore size of 0% and a pore size of 10 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16430186A JPS6319688A (en) | 1986-07-12 | 1986-07-12 | Fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16430186A JPS6319688A (en) | 1986-07-12 | 1986-07-12 | Fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6319688A true JPS6319688A (en) | 1988-01-27 |
Family
ID=15790518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16430186A Pending JPS6319688A (en) | 1986-07-12 | 1986-07-12 | Fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6319688A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0625735A1 (en) * | 1993-05-18 | 1994-11-23 | Japan Gore-Tex, Inc. | An elastic fixing roll |
| EP1724647A1 (en) * | 2004-03-09 | 2006-11-22 | Japan Gore-Tex, INC. | Elastic member, article for fixing toner and device for fixing toner, and method for manufacturing elastic member |
-
1986
- 1986-07-12 JP JP16430186A patent/JPS6319688A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0625735A1 (en) * | 1993-05-18 | 1994-11-23 | Japan Gore-Tex, Inc. | An elastic fixing roll |
| EP1724647A1 (en) * | 2004-03-09 | 2006-11-22 | Japan Gore-Tex, INC. | Elastic member, article for fixing toner and device for fixing toner, and method for manufacturing elastic member |
| EP1724647A4 (en) * | 2004-03-09 | 2008-05-14 | Japan Gore Tex Inc | Elastic member, article for fixing toner and device for fixing toner, and method for manufacturing elastic member |
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