JPH0119148Y2 - - Google Patents
Info
- Publication number
- JPH0119148Y2 JPH0119148Y2 JP14552482U JP14552482U JPH0119148Y2 JP H0119148 Y2 JPH0119148 Y2 JP H0119148Y2 JP 14552482 U JP14552482 U JP 14552482U JP 14552482 U JP14552482 U JP 14552482U JP H0119148 Y2 JPH0119148 Y2 JP H0119148Y2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- porous membrane
- polytetrafluoroethylene
- offset
- fixing roller
- 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.)
- Expired
Links
- 239000012528 membrane Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 22
- -1 polytetrafluoroethylene Polymers 0.000 claims description 22
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 21
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 21
- 239000011358 absorbing material Substances 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 229920002545 silicone oil Polymers 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 230000002265 prevention Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
Description
【考案の詳細な説明】
本考案は電子写真等の分野で使用するところの
定着装置におけるオフセツト防止液供給部材に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anti-offset liquid supply member in a fixing device used in fields such as electrophotography.
電子写真において、トナー像支持材を定着ロー
ラと加圧ローラとの間に送つて、定着ローラの熱
で支持材上のトナー像を当該支持材に加熱溶融す
る（定着する）場合、トナーのオフセツトや支持
材のローラへの巻付防止のために、定着ローラに
オフセツト防止液（通常、シリコーンオイルが使
用されている）を塗布することが必要である。 In electrophotography, when a toner image support material is sent between a fixing roller and a pressure roller and the toner image on the support material is heated and melted (fixed) to the support material by the heat of the fixing roller, the toner offset is It is necessary to apply an anti-offset liquid (usually silicone oil) to the fixing roller in order to prevent the support material from wrapping around the roller.
従来、上記オフセツト防止液の塗布には、シリ
コーンオイルを毛管現象で吸収保持したフエルト
を定着ローラに直接当接させる方法が用いられて
いる。しかしながら、この方法ではオイル塗布量
が多すぎ、トナー像支持材がオイルで汚れたり、
スリツプによつてトナー像が乱れたりする不具合
がある。又、ブレード（定着ローラに付着したト
ナーや紙粉を掻き取る部材）が僅かでも摩耗する
と、フエルトがトナーのために目づまりし、オイ
ルの塗布むらが生じるようになり、ブレードの保
守もやつかいである。 Conventionally, a method has been used to apply the above-mentioned anti-offset liquid by bringing a felt absorbing and retaining silicone oil by capillary action into direct contact with a fixing roller. However, with this method, the amount of oil applied is too large, and the toner image support material is stained with oil.
There is a problem that the toner image is disturbed by the slip. Additionally, if the blade (a member that scrapes off toner and paper dust adhering to the fixing roller) wears out even slightly, the felt will become clogged with toner, causing uneven oil application, making maintenance of the blade difficult. It is.
本考案に係る定着装置におけるオフセツト防止
液供給部材は、上述の不利を解消し得、更には、
複数回使用を可能とする構成であり、オフセツト
防止液を毛管現象で吸収保持するシート状吸液材
にポリテトラフルオロエチレン多孔質膜を重畳
し、これらの間を複数本の互に平行な非接着部を
設けるように接着剤により接着したことを特徴と
するものである。 The offset prevention liquid supply member in the fixing device according to the present invention can eliminate the above-mentioned disadvantages, and furthermore,
It has a structure that can be used multiple times, and a polytetrafluoroethylene porous membrane is superimposed on a sheet-like liquid-absorbing material that absorbs and retains offset prevention liquid by capillary action, and a plurality of parallel non-contact membranes are placed between them. It is characterized in that it is bonded with an adhesive so as to provide an adhesive portion.
以下、図面により本考案を説明する。 The present invention will be explained below with reference to the drawings.
第１図において、１はオフセツト防止液を毛管
現象で吸収保持するシート状吸液材であり、定着
ローラの加熱温度に耐え得る耐熱性を有する。こ
の吸液材１には、弗素樹脂、ポリイミド樹脂、ア
ラミツド樹脂、ポリアミドイミド樹脂、ガラスフ
アイバー、カーボンフアイバー等の耐熱性材料か
ら成るフエルト、不織布、織布、発泡シート等を
用いることができる。 In FIG. 1, reference numeral 1 denotes a sheet-like liquid-absorbing material that absorbs and retains the offset prevention liquid by capillary action, and has heat resistance that can withstand the heating temperature of the fixing roller. The liquid-absorbing material 1 may be felt, nonwoven fabric, woven fabric, foamed sheet, or the like made of a heat-resistant material such as fluororesin, polyimide resin, aramid resin, polyamideimide resin, glass fiber, or carbon fiber.
２はポリテトラフルオロエチレン多孔質膜であ
り、吸液材１の片面に重畳され、これらの間に、
複数本の互に平行な非接着部分３，…を設けるよ
うにして耐熱性の接着剤４によつて接着されてい
る。従つて、非接着部分３，…において吸液材１
から多孔質膜２への通液が可能である。 2 is a polytetrafluoroethylene porous membrane, which is superimposed on one side of the liquid absorbent material 1, and between them,
A plurality of parallel non-bonded portions 3, . . . are provided and bonded using a heat-resistant adhesive 4. Therefore, in the non-adhesive portions 3,...
It is possible to pass liquid through the porous membrane 2 from the porous membrane 2 .
上記接着剤４には、ポリテトラフルオロエチレ
ンデイスパージヨン、テトラフルオロエチレン−
ヘキサフルオロプロピレン共重合体又はエチレン
−テトラフルオロエチレン共重合体あるいはパー
フルオロアルコキシ樹脂のデイスパージヨン又は
フイルム、弗素ゴム等を使用できる。 The adhesive 4 includes polytetrafluoroethylene dispersion, tetrafluoroethylene dispersion,
Dispersion or film of hexafluoropropylene copolymer, ethylene-tetrafluoroethylene copolymer, perfluoroalkoxy resin, fluororubber, etc. can be used.
上記ポリテトラフルオロエチレン多孔質膜２と
しては、定着ローラの回転方向における引張強さ
が100Kg／cm2以上のものが通常使用されるが、耐
久性の点からは200Kg／cm2以上のものが好適であ
る。このような多孔質膜は未焼成ポリテトラフル
オロエチレンシートを延伸（好ましくは２軸延
伸）により多孔化し、次いで、延伸方向の収縮が
生じないように固定した状態でポリテトラフルオ
ロエチレンの融点以上の温度に加熱し焼成する方
法等により得ることができる。この多孔質膜の厚
さは0.05〜１mm、気孔率は40〜90％、平均孔径は
0.03〜3μ程度である。 As the polytetrafluoroethylene porous membrane 2, one having a tensile strength of 100 kg/cm 2 or more in the direction of rotation of the fixing roller is usually used, but from the viewpoint of durability, a membrane of 200 kg/cm 2 or more is used. suitable. Such a porous membrane is made by stretching (preferably biaxially stretching) an unfired polytetrafluoroethylene sheet to make it porous, and then heating it at a temperature higher than the melting point of polytetrafluoroethylene while being fixed so as not to shrink in the stretching direction. It can be obtained by heating to a certain temperature and firing. The thickness of this porous membrane is 0.05 to 1 mm, the porosity is 40 to 90%, and the average pore diameter is
It is about 0.03 to 3μ.
第２図は本考案に係るオフセツト防止液供給部
材の使用状態を示している。 FIG. 2 shows the use of the anti-offset liquid supply member according to the present invention.
Ａは複写機の定着ローラであり、トナー像を支
持材に加熱融着させるために180〜200℃程度に加
熱される。Ｂは容器、Ｃはシリコーンオイル（オ
フセツト防止液）である。 A is a fixing roller of the copying machine, which is heated to about 180 to 200° C. in order to heat and fuse the toner image to the support material. B is a container, and C is silicone oil (offset prevention liquid).
Ｍは本考案に係るオフセツト防止液供給部材で
あり、固定バーＤによつて支持され、下端部がシ
リコーンオイルＣ中に浸漬されており、ポリテト
ラフルオロエチレン多孔質膜２が適宜の非接着部
分３において定着ローラＡに当接されている。Ｅ
はブレードである。 M is an anti-offset liquid supplying member according to the present invention, supported by a fixed bar D, the lower end is immersed in silicone oil C, and the polytetrafluoroethylene porous membrane 2 is attached to an appropriate non-adhesive part. 3, it is brought into contact with the fixing roller A. E
is a blade.
第２図において、オフセツト防止液供給部材Ｍ
の吸液材１には、毛管現象によつてシリコーンオ
イルが吸収保持されている。又、ポリテトラフル
オロエチレン多孔質膜２には、その気孔率、孔
径、膜厚み並びにポリテトラフルオロエチレンの
親油性等の諸要因で規制された所定量のシリコー
ンオイルが含浸されている。この含浸オイルが定
着ローラＡにその回転に伴つて塗布され、この塗
布によつて上記オイル含浸の平衡状態が失われる
と、その平衡状態を回復するように吸液材１中の
シリコーンオイルがポリテトラフルオロエチレン
多孔質膜２に移行する。 In FIG. 2, offset prevention liquid supply member M
The liquid-absorbing material 1 absorbs and retains silicone oil by capillary action. Further, the polytetrafluoroethylene porous membrane 2 is impregnated with a predetermined amount of silicone oil regulated by various factors such as its porosity, pore diameter, membrane thickness, and lipophilicity of polytetrafluoroethylene. This impregnating oil is applied to the fixing roller A as it rotates, and when the equilibrium state of oil impregnation is lost due to this application, the silicone oil in the liquid absorbing material 1 is applied to the polymer so as to restore the equilibrium state. Moving on to the tetrafluoroethylene porous membrane 2.
上記シリコーンオイルの適正な塗布量（トナー
像支持材のオイル汚れ、スリツプによるトナー像
の乱れ等の防止に適切な塗布量）は0.3〜2.0c.c.／
cm2、min，／76cmHgであり、かゝる塗布量は上
記した特性のポリテトラフルオロエチレン多孔質
膜（厚み0.05〜１mm、気孔率40〜90％、平均孔径
0.03〜3μ）によつて達成できる。 The appropriate application amount of the above silicone oil (appropriate application amount to prevent oil stains on the toner image support material and disturbance of the toner image due to slip) is 0.3 to 2.0 cc/
cm 2 , min, /76 cmHg, and such coating amount is a polytetrafluoroethylene porous membrane with the above characteristics (thickness 0.05 to 1 mm, porosity 40 to 90%, average pore diameter
0.03~3μ).
上記ポリテトラフルオロエチレン多孔質膜２の
付設に加え、第３図に示すように、吸液材１の下
端部、つまりシリコーンオイルに浸漬される部分
にも多孔膜（袋状）２０を設ければ、上記シリコ
ーンオイルの塗布量をこの多孔膜２０とポリテト
ラフルオロエテレン多孔質膜２の双方で調整で
き、調整がより一層容易となる。 In addition to the polytetrafluoroethylene porous membrane 2 described above, as shown in FIG. 3, a porous membrane (bag-like) 20 is also provided at the lower end of the liquid absorbent material 1, that is, at the part that will be immersed in silicone oil. For example, the amount of silicone oil to be applied can be adjusted on both the porous membrane 20 and the porous polytetrafluoroethylene membrane 2, making the adjustment even easier.
本考案に係る定着装置におけるオフセツト防止
液供給部材は、上述した通りの構成であり、ポリ
テトラフルオロエチレン多孔質膜を吸液材に添設
し、この多孔質膜を定着ローラに当接させて、吸
液材中のオフセツト防止液をポリテトラフルオロ
エチレン多孔質膜を通して定着ローラに塗布する
ものであり、ポリテトラフルオロエチレン多孔質
膜の適度のシリコーンオイル透過性のために上記
塗布量を適量になし得る。又、ポリテトラフルオ
ロエチレン多孔質膜においては、平均孔径が3μ
以下でも、上記適正な塗布量を達成できるので、
トナーの目詰りによる塗布の不均一化もなく、ブ
レード省略による複写機の簡易化も可能である。 The offset prevention liquid supply member in the fixing device according to the present invention has the configuration as described above, and includes a polytetrafluoroethylene porous membrane attached to the liquid absorbing material, and this porous membrane brought into contact with the fixing roller. , the anti-offset liquid in the liquid-absorbing material is applied to the fixing roller through a polytetrafluoroethylene porous membrane, and the above coating amount is adjusted to an appropriate amount in order to ensure the appropriate silicone oil permeability of the polytetrafluoroethylene porous membrane. It can be done. In addition, in polytetrafluoroethylene porous membrane, the average pore diameter is 3μ
The above appropriate coating amount can be achieved even with the following:
There is no uneven coating due to toner clogging, and the copying machine can be simplified by omitting a blade.
更に、ポリテトラフルオロエチレン多孔質膜と
シート状吸液材との間に複数本の互に平行な非接
着部が設けられており、従つて、吸液材からポリ
テトラフルオロエチレン多孔質膜への通液が可能
な箇所が複数箇存在しているから、一箇所での使
用が摩損のために不可能となつても、次の箇所を
定着ローラに当接すれば、複数回使用が可能とな
り、実質上、オフセツト防止液供給部材の寿命が
長くできる。 Furthermore, a plurality of mutually parallel non-bonded parts are provided between the polytetrafluoroethylene porous membrane and the sheet-like liquid-absorbing material, so that the liquid-absorbing material can be transferred from the polytetrafluoroethylene porous membrane to the polytetrafluoroethylene porous membrane. There are multiple locations through which liquid can pass, so even if it becomes impossible to use one location due to wear and tear, it can be used multiple times by touching the next location with the fixing roller. Therefore, the life of the offset prevention liquid supply member can be substantially extended.
第１図は本考案に係るオフセツト防止液供給部
材を示す説明図、第２図は本考案部材の使用状態
を示す説明図、第３図は本考案の別実施例を示す
説明図である。
図において、１はシート状吸液材、２はポリテ
トラフルオロエチレン多孔質膜、３，３…は非接
着部、４は接着剤である。
FIG. 1 is an explanatory diagram showing an offset prevention liquid supplying member according to the present invention, FIG. 2 is an explanatory diagram showing the usage state of the inventive member, and FIG. 3 is an explanatory diagram showing another embodiment of the present invention. In the figure, 1 is a sheet-like liquid-absorbing material, 2 is a polytetrafluoroethylene porous membrane, 3, 3... are non-adhesive parts, and 4 is an adhesive.
Claims (1)
ート状吸液材にポリテトラフルオロエチレン多孔
質膜を重畳し、これらの間を複数本の互に平行な
非接着部を設けるように接着剤により接着したこ
とを特徴とする定着装置におけるオフセツト防止
液供給部材。 A polytetrafluoroethylene porous membrane is superimposed on a sheet-like liquid-absorbing material that absorbs and retains anti-offset liquid through capillary action, and is bonded with an adhesive so that multiple parallel non-adhesive parts are provided between them. An anti-offset liquid supply member for a fixing device, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14552482U JPS5948554U (en) | 1982-09-24 | 1982-09-24 | Offset prevention liquid supply member in fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14552482U JPS5948554U (en) | 1982-09-24 | 1982-09-24 | Offset prevention liquid supply member in fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5948554U JPS5948554U (en) | 1984-03-31 |
| JPH0119148Y2 true JPH0119148Y2 (en) | 1989-06-02 |
Family
ID=30324195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14552482U Granted JPS5948554U (en) | 1982-09-24 | 1982-09-24 | Offset prevention liquid supply member in fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948554U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0673051B2 (en) * | 1986-02-03 | 1994-09-14 | ジヤパンゴアテツクス株式会社 | Oil application mechanism for copiers |
-
1982
- 1982-09-24 JP JP14552482U patent/JPS5948554U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5948554U (en) | 1984-03-31 |
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