JPH0273279A - Fixing and pressurizing belt - Google Patents
Fixing and pressurizing beltInfo
- Publication number
- JPH0273279A JPH0273279A JP22455788A JP22455788A JPH0273279A JP H0273279 A JPH0273279 A JP H0273279A JP 22455788 A JP22455788 A JP 22455788A JP 22455788 A JP22455788 A JP 22455788A JP H0273279 A JPH0273279 A JP H0273279A
- Authority
- JP
- Japan
- Prior art keywords
- fixing
- conductive carbon
- belt
- fluororesin
- layer
- 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
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 18
- 238000000465 moulding Methods 0.000 abstract description 12
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004073 vulcanization Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 2
- 229920002313 fluoropolymer Polymers 0.000 abstract 5
- 238000004299 exfoliation Methods 0.000 abstract 1
- 239000011229 interlayer Substances 0.000 abstract 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 5
- 239000011737 fluorine Substances 0.000 description 5
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 241000282320 Panthera leo Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、電子写真襖写機、ファクシミリ。[Detailed description of the invention] <Industrial application field> The present invention relates to an electrophotographic fusuma copying machine and a facsimile machine.
プリンター等に用いられ被転写物に転写された画像を定
着するとともに該被転写物を搬送する定着・加圧ベルト
又はスリーブ(以下、単にベルトという)に関する。The present invention relates to a fixing/pressure belt or sleeve (hereinafter simply referred to as a belt) used in a printer or the like, which fixes an image transferred to an object and conveys the object.
〈従来の技術〉
電子写真複写機、ファクシミリ、プリンター等において
は、例えば第4図に示すように複写機10の感光体11
上に静電画像を形成し、この静電画像を画像形成部12
によってトナー像として現像するとともに該トナー像を
転写部13によって紙等の被転写物14に転写した後、
この被転写物14上の転写像を定着部15によって定着
することにより被転写物を得ている。<Prior Art> In electrophotographic copying machines, facsimile machines, printers, etc., for example, as shown in FIG.
An electrostatic image is formed on the image forming section 12.
After developing it as a toner image and transferring the toner image to a transfer object 14 such as paper by a transfer section 13,
The transferred image on the transferred object 14 is fixed by the fixing section 15 to obtain the transferred object.
この従来の定着部15においては、第5図に示すように
、従来より一対のヒートロール16とノリコーンゴム製
の加圧ロール17とからなり、被転写物14を挾み込ん
で定着するロール定着が採用されている。As shown in FIG. 5, this conventional fixing unit 15 is conventionally comprised of a pair of heat rolls 16 and a pressure roll 17 made of noricorn rubber, and roll fixing that fixes the transferred material 14 by sandwiching it. It has been adopted.
しかしながら、このロール定着は加圧ロール17の押圧
力が強いため例えば細い腺などがつぶれてしまい画像が
鮮明でなくなるという問題があるため、近年、第6図に
示すようなヒートロール18とこのヒートロール18の
一部を覆うように当接するベルト19とからなるベルト
定着が採用されている。However, this roll fixing has the problem that the pressing force of the pressure roll 17 is so strong that, for example, fine glands are crushed and the image becomes unclear. Belt fixing is employed, which includes a belt 19 that abuts and covers a portion of the roll 18.
このベルト定着は、接触面積が大きくとれろため定着・
加圧ベルト19の押付は圧力が弱くて良く、精密な複写
、あるいは特に大版、例丸ばAOの用紙の被写に好適で
ある。This belt fixing requires a large contact area, so the fixing and
The pressing force of the pressure belt 19 may be low, and is suitable for precise copying or especially for copying large size sheets, such as round AO sheets.
このベルト定着に用いる定着・加圧ベルト19(、t、
〜般に、ミラブルシリコーンゴム(HTV)を原料とし
て、押出し成形、又はシート巻き成形等によって成形し
た後、研βしたものである。Fixing/pressure belt 19 (,t,
-Generally, millable silicone rubber (HTV) is used as a raw material, molded by extrusion molding, sheet winding molding, etc., and then polished.
その後、この得られた定着・加圧ベルトには被転写物1
4と当接する表面にフッ素コート層を施してトナーとの
剥離性を良くしている。Thereafter, the transferred object 1 is placed on the obtained fixing/pressure belt.
A fluorine coating layer is applied to the surface that contacts 4 to improve releasability from toner.
〈発明が解決しようとする課題〉
しかしながら、従来のフッ素コート層を施した定着・加
圧ベルト19を製造するには多工程の製造過程を経て製
品化されるため、手間と時間がかかるという問題がある
。また、フッ素コート剤を用いるためのコーティング技
術に困難性があり更に手間がかかるという問題もある。<Problems to be Solved by the Invention> However, manufacturing the fixing/pressure belt 19 with a conventional fluorine coating layer involves a multi-step manufacturing process, which takes time and effort. There is. Another problem is that the coating technique for using the fluorine coating agent is difficult and time-consuming.
更に、ベルト表面とフッ素コート剤とのコーティングに
おいては屈曲寿命に限界があるという問題がある。Furthermore, there is a problem in that there is a limit to the flex life of the coating between the belt surface and the fluorine coating agent.
本発明はこのような事情に鑑み、簡易且つ低コストで製
造でき表面のフッ素樹脂層が剥離する心配のない定着・
加圧ベルトを提供することを目的とする。In view of these circumstances, the present invention has been developed to provide a fixing and fixing method that can be manufactured simply and at low cost, and that eliminates the fear that the fluororesin layer on the surface will peel off.
The purpose is to provide a pressure belt.
〈課題を解決するための手段〉
前記目的を達成する本発明にかかる定着加圧ベルトは、
揮発性溶剤に熱硬化液状シリコーンゴムを溶解しフッ素
樹脂微粉末を混合してなる混合樹脂を遠心成形してなり
、被転写物に転写された静電画像を定着する定着・加圧
ベルトであって、その表面にフッ素樹脂層が形成されて
いることを特徴とし、又、揮発性溶剤に熱硬化液状シリ
コーンゴムを溶解しフッ素樹脂微粉末及び導電性カーボ
ンを混合してなる混合樹脂を遠心成形してなり、被転写
物に転写された静電画像を定着する定着・加圧ベルトで
あって、その表面にフッ素樹脂層が、又、該フッ素樹脂
層の内側に導電性カーボン層が形成されていることを特
徴とする。<Means for Solving the Problems> The fixing pressure belt according to the present invention that achieves the above object has the following features:
This fixing/pressure belt is made by centrifugally molding a mixed resin made by dissolving thermosetting liquid silicone rubber in a volatile solvent and mixing fine powder of fluororesin, and fixes the electrostatic image transferred to the transferred object. It is characterized in that a fluororesin layer is formed on its surface, and a mixed resin obtained by dissolving thermosetting liquid silicone rubber in a volatile solvent and mixing fluororesin fine powder and conductive carbon is centrifugally molded. A fixing/pressure belt for fixing an electrostatic image transferred to an object, which has a fluororesin layer on its surface and a conductive carbon layer inside the fluororesin layer. It is characterized by
本発明にかかる定着・加圧ベルトは、熱硬化液状シリコ
ーンゴムからなるベース樹脂とフッ素樹脂又はフッ素樹
脂及び導電性カーボンとの比重差を利用して製造される
ものである。すなわら、ベース樹脂にフッ素樹脂を混合
した場合には第1図に示すように、ベース樹脂lの外側
表面にフッ素樹脂ll12が形成されろ。また、ベース
樹脂にフッ素樹脂及び導電性カーボンを混合した場合に
は、第2図に示すように、ベース樹脂1の外側表面にフ
ッ素樹脂層2が形成され、その内側に導電性カーボン層
3が形成される。The fixing/pressure belt according to the present invention is manufactured by utilizing the difference in specific gravity between a base resin made of thermosetting liquid silicone rubber and a fluororesin or a fluororesin and conductive carbon. That is, when a fluororesin is mixed with the base resin, a fluororesin 112 is formed on the outer surface of the base resin 1, as shown in FIG. Furthermore, when a fluororesin and conductive carbon are mixed in the base resin, a fluororesin layer 2 is formed on the outer surface of the base resin 1, and a conductive carbon layer 3 is formed on the inside thereof, as shown in FIG. It is formed.
ここで、フッ素樹脂微粉末として+;t、300〜35
0℃で熱溶融する四フッ化エチレン六フッ化プロピレン
共重合体(FEP)、ポリフルオロアルコキシフッti
lt (PFA、)Wの他、ポリ四フッ化エチレン(P
TFE)等を用いればよく、その平均粒径は5〜10/
J1の範囲にあるのがよい。また、導電性カーボンとし
ては平均粒径は10〜507jnのものを用いればよい
。Here, as a fluororesin fine powder +; t, 300 to 35
Tetrafluoroethylene hexafluoropropylene copolymer (FEP) that melts at 0°C, polyfluoroalkoxyfluoroethylene
In addition to lt (PFA,) W, polytetrafluoroethylene (P
TFE) etc. may be used, and the average particle size thereof is 5 to 10/
It is better to be in the range of J1. Further, as the conductive carbon, one having an average particle size of 10 to 507 jn may be used.
かかる定着・加圧ベルトを製造するには、まず、ベース
樹脂を揮発性溶媒に溶解してこれにフッ素樹脂微粉末、
導電性カーボンを混合し、この混合樹脂を円筒型に注入
して加熱しつつ遠心成形すればよい。To manufacture such a fixing/pressure belt, first, the base resin is dissolved in a volatile solvent, and fluororesin fine powder,
Conductive carbon may be mixed, the mixed resin may be injected into a cylindrical mold, and centrifugal molding may be performed while heating.
この遠心成形においては、ベース樹脂が半加硫された状
態で脱型し、その後説型したベルトを鉄芯に被せて本加
硫を行う。ここで、遠心成形を行う円筒型は110〜1
30℃に保てばよく、また、本加硫は180〜200℃
で行う。なお、フン素樹脂微粉末として熱溶融タイプの
FEPやPFAを使用した場合には、300〜350℃
に加熱するとベルト表面のフッ素樹脂微粉末が溶融され
てフッ素樹脂膜がIEし成される。In this centrifugal molding, the base resin is removed from the mold in a semi-vulcanized state, and then the molded belt is placed over the iron core to perform main vulcanization. Here, the cylindrical mold for centrifugal molding is 110 to 1
It is sufficient to maintain the temperature at 30℃, and the main vulcanization temperature is 180 to 200℃.
Do it with In addition, when heat-melting type FEP or PFA is used as the fluorine resin fine powder, the temperature is 300 to 350℃.
When heated to , the fine fluororesin powder on the belt surface is melted and a fluororesin film is formed by IE.
く実 施 例〉
以下、本発明を実施例に基づいて説明する1゜第3図に
示すように、外周を保温層】3で覆い内部に加熱用流体
の通路12を有し、蓋14で開口を閉じろことができろ
ようにした箱形の加熱ジャケット11内に、加熱ジャケ
ット11の底部を貫通してモーター15で回転するよう
に設けた回転軸6の一端を侵入させ、回転軸16に一端
に円筒型】7の一端を固定した遠心成形装置を用いて定
着・加圧ベルトを製造した。Embodiment Example The present invention will be explained below based on an example.1 As shown in FIG. One end of a rotating shaft 6 provided to be rotated by a motor 15 is inserted through the bottom of the heating jacket 11 into a box-shaped heating jacket 11 whose opening can be closed, and the rotating shaft 16 is rotated by a motor 15. A fixing/pressure belt was manufactured using a centrifugal molding device in which one end of the cylindrical shape [7] was fixed.
熱硬化液状ンリコーノゴム(イ1越化学製、商品名KE
−13001230gを、トルエン、灯油などの揮発性
溶媒115gに等解し、この溶?疫に平均粒子径5〜1
0声のフッ素樹脂粉末(PFA)2g及び平均粒子径5
5声のカーボンブラック粉(ライオン製、商品名ケッチ
エンブランク)3gを混合した。この混合液を1000
r四で回転している、内径67閾、長さ400關の円筒
型17に注入し、雰囲気1度を120〜130℃に昇温
し30分間遠心成形した。回転を停止してからベルトを
円筒型17から取り出し、200℃で2時間加熱して硬
化を完了させた。得られたベルトは厚さ2鵬で、外側に
厚さ10/j11のフッ素樹脂層が形成され、その内側
にカーボンブラック粉によって厚さ10−の導電層が形
成されており、内側の層は、はぼ非導電性のシリコーラ
ゴム后であった。Thermosetting liquid liquid rubber (manufactured by I1 Etsu Kagaku, trade name KE)
-1230 g of -1300 is dissolved in 115 g of a volatile solvent such as toluene or kerosene, and this solution is ? average particle size of 5 to 1
2g of 0-tone fluororesin powder (PFA) and average particle size of 5
3 g of 5-tone carbon black powder (manufactured by Lion, trade name: Ketchen Blank) was mixed. Add this mixture to 1000
The mixture was poured into a cylindrical mold 17 having an inner diameter of 67 mm and a length of 400 mm, which was rotating at r4, the atmosphere was heated to 120 to 130 degrees Celsius, and centrifugal molding was performed for 30 minutes. After stopping the rotation, the belt was taken out from the cylindrical mold 17 and heated at 200° C. for 2 hours to complete curing. The resulting belt has a thickness of 2 mm, and has a fluororesin layer with a thickness of 10/j11 formed on the outside, a conductive layer with a thickness of 10 mm made of carbon black powder on the inside, and the inner layer is , it was made of non-conductive silicola rubber.
この得られた定着・加圧ベルトを用い従来と同様にベル
ト定着として用いたところ、帯電防11:効果が高く、
トナーとの剥離性が良いものであった。また長期間に亙
って使用しても全く異常は見られなかった。When this obtained fixing/pressure belt was used as a belt fixing belt in the same manner as before, the antistatic effect was 11: high,
It had good releasability from toner. Further, no abnormalities were observed even after long-term use.
〈発明の効果〉
本発明の定着・加圧ベルトは、表面のフッ素樹脂層、又
はフン素樹脂層及び導電性カーボン暦が遠心成形により
一体的に形成されたものであるので、簡易に低コストで
製造され、且つ層間の剥離の心配もないものである。<Effects of the Invention> The fixing/pressure belt of the present invention has a fluororesin layer on the surface, or a fluororesin layer and a conductive carbon layer integrally formed by centrifugal molding, so it can be easily and inexpensively manufactured. The material is manufactured using the same technology, and there is no fear of delamination between the layers.
第1図及び第2図は本発明の定着・加圧ベルトの断面図
、第3図は本発明の実施例に用いた遠心成形装置を示す
断面図、第4図は複写機の概略図、第5図はロール定着
を示す説明図、第6図はベルト定着を示す説明図である
。
図 面 中、
1はペース樹脂、
2はフッ素樹脂j−1
3は導電性カーボン層である。
特 許 出 願 人
北辰工業株式会社
代 理 人1 and 2 are cross-sectional views of the fixing/pressure belt of the present invention, FIG. 3 is a cross-sectional view of a centrifugal molding device used in an embodiment of the present invention, and FIG. 4 is a schematic diagram of a copying machine. FIG. 5 is an explanatory diagram showing roll fixing, and FIG. 6 is an explanatory diagram showing belt fixing. In the drawings, 1 is a paste resin, 2 is a fluororesin j-1, and 3 is a conductive carbon layer. Patent application Agent: Hokushin Kogyo Co., Ltd.
Claims (3)
フッ素樹脂微粉末を混合してなる混合樹脂を遠心成形し
てなり、被転写物に転写された静電画像を定着する定着
・加圧ベルトであって、その表面にフッ素樹脂層が形成
されていることを特徴とする定着・加圧ベルト。(1) A mixed resin made by dissolving thermosetting liquid silicone rubber in a volatile solvent and mixing fine fluororesin powder is centrifugally molded, and fixing/pressure is applied to fix the electrostatic image transferred to the transfer object. A fixing/pressure belt characterized in that a fluororesin layer is formed on the surface of the belt.
フッ素樹脂微粉末及び導電性カーボンを混合してなる混
合樹脂を遠心成形してなり、被転写物に転写された静電
画像を定着する定着・加圧ベルトであって、その表面に
フッ素樹脂層が、又、該フッ素樹脂層の内側に導電性カ
ーボン層が形成されていることを特徴とする定着・加圧
ベルト。(2) A mixed resin made by dissolving thermosetting liquid silicone rubber in a volatile solvent and mixing fluororesin fine powder and conductive carbon is centrifugally molded to fix the electrostatic image transferred to the transfer object. A fixing/pressure belt, characterized in that a fluororesin layer is formed on the surface of the fixing/pressure belt, and a conductive carbon layer is formed inside the fluororesin layer.
、表面のフッ素樹脂層は、フッ素樹脂微粉末が溶融され
て形成されている定着・加圧ベルト。(3) The fixing/pressure belt according to claim 1 or 2, wherein the fluororesin layer on the surface is formed by melting fluororesin fine powder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22455788A JPH0273279A (en) | 1988-09-09 | 1988-09-09 | Fixing and pressurizing belt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22455788A JPH0273279A (en) | 1988-09-09 | 1988-09-09 | Fixing and pressurizing belt |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0273279A true JPH0273279A (en) | 1990-03-13 |
Family
ID=16815648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22455788A Pending JPH0273279A (en) | 1988-09-09 | 1988-09-09 | Fixing and pressurizing belt |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0273279A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07110632A (en) * | 1993-10-08 | 1995-04-25 | Sumitomo Electric Ind Ltd | Belt for fixing |
-
1988
- 1988-09-09 JP JP22455788A patent/JPH0273279A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07110632A (en) * | 1993-10-08 | 1995-04-25 | Sumitomo Electric Ind Ltd | Belt for fixing |
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