JPH0378626B2 - - Google Patents
Info
- Publication number
- JPH0378626B2 JPH0378626B2 JP58088943A JP8894383A JPH0378626B2 JP H0378626 B2 JPH0378626 B2 JP H0378626B2 JP 58088943 A JP58088943 A JP 58088943A JP 8894383 A JP8894383 A JP 8894383A JP H0378626 B2 JPH0378626 B2 JP H0378626B2
- Authority
- JP
- Japan
- Prior art keywords
- release agent
- porous tube
- mold release
- opening
- roll
- 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 - Lifetime
Links
- 239000006082 mold release agent Substances 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005245 sintering 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
- G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
- G03G15/2025—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2093—Release agent handling devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
Description
【発明の詳細な説明】
（技術分野）
本発明はプレインペーパコピ（Plain Paper
Copy）（PPC）複写機の定着ロールにシリコンオ
イル等の離型剤を塗布する装置に関するものであ
る。[Detailed Description of the Invention] (Technical Field) The present invention is based on a plain paper copy.
Copy) (PPC) This relates to a device that applies a release agent such as silicone oil to the fixing roll of a copying machine.
（従来技術とその問題点）
PPC複写機における定着機構としては、基本
的には紙面に転写されたトナーを加熱定着ロール
とゴムロール等の弾性のある加圧ロールの間を通
過させ温度をかけながら圧着し焼き付けることに
ある。このような機構において、加熱された定着
ロールと弾性のある加圧ロールとの間をトナーの
付着した紙面が通過すると紙自体がロールに付着
してロールに巻きつき完全な焼付けが出来ないと
か、コピ紙に転写されたトナーが定着ロールに付
着し画像が二重写しになる（所謂オフセツト現
象）とか、設備の故障とかいつた問題が発生す
る。従つて従来よりこの点について種々検討され
ているが最終的には定着ロール及び弾性ロールに
離型のための離型剤を塗布する方法がとられてい
る。(Prior art and its problems) Basically, the fixing mechanism in a PPC copying machine is to pass the toner transferred onto the paper between a heated fixing roll and an elastic pressure roll such as a rubber roll while applying heat. It consists in crimping and baking. In such a mechanism, when a paper surface with toner attached passes between a heated fixing roll and an elastic pressure roll, the paper itself adheres to the roll and wraps around the roll, preventing complete printing. Problems such as toner transferred to the copy paper adheres to the fixing roll resulting in double copies of images (so-called offset phenomenon) and equipment failures occur. Therefore, various studies have been made in the past regarding this point, but the final method has been to apply a mold release agent to the fixing roll and the elastic roll for mold release.
しかしながらこの離型剤をロールに均一にかつ
適量塗布する方法は非常に難かしく、離型剤が多
すぎると紙面にしみがついたり紙面が変色したり
し、同時に離型剤の消費がはげしくたえず注油し
たりする手間がかかるし、多すぎた離型剤がロー
ル表面で固化したりし、思わぬ故障の原因になつ
たりする。又離型剤が少なすぎると当然のことな
がら前記のオフセツト現象が発生したり、ロール
表面の離型性が悪くなり紙がロールに巻付く原因
となる。ちなみに離型剤としては主としてシリコ
ンオイル等の耐熱オイルが使用される。 However, it is very difficult to apply this mold release agent evenly and in the right amount to the roll, and if too much mold release agent is used, the paper surface becomes stained or discolored, and at the same time, the mold release agent is consumed rapidly. It takes time and effort to lubricate the roll, and too much mold release agent can solidify on the roll surface, causing unexpected breakdowns. Furthermore, if the amount of release agent is too small, the above-mentioned offset phenomenon will naturally occur, and the release properties of the roll surface will deteriorate, causing the paper to wrap around the roll. Incidentally, heat-resistant oil such as silicone oil is mainly used as a mold release agent.
このため従来離型剤の塗布装置として、種々の
構造のものが開発提案されているが、必ずしも充
分なものではない。 For this reason, conventional release agent applicators with various structures have been developed and proposed, but these are not necessarily sufficient.
そこで本特許出願人は離型剤の塗布装置として
離型剤の塗布状態が均一で離型剤の消費も必要最
小量で経済的でしかも非常に狭いスペースの所で
も装置の取りつけが可能であり、しかも形状も単
純でコストも非常に安価で使い捨ても可能である
次の如きものを先に発明し特許出願した。 Therefore, the applicant of this patent has developed a mold release agent applicator that is economical, ensures uniform application of mold release agent, consumes the minimum amount of mold release agent, and can be installed even in extremely narrow spaces. In addition, he invented and applied for a patent on the following product, which has a simple shape, is very inexpensive, and is disposable.
即ち第１，２図に示す如く定着ロール１４と加
圧ロール１５の間を通してトナー像をコピ紙１６
に加熱定着する定着装置に於いて、定着ロール１
４に両端を例えば加熱圧着してシールした四弗化
エチレン樹脂多孔質チユーブ７をロールの母線方
向に当接させ、四弗化エチレン樹脂多孔質チユー
ブにてその中からの離型剤６を塗布するようにす
ることを特徴とするものである。 That is, as shown in FIGS. 1 and 2, the toner image is passed between the fixing roll 14 and the pressure roll 15 on the copy paper 16.
In the fixing device that heats and fixes the
4, a porous tetrafluoroethylene resin tube 7 whose both ends are sealed by heat-pressing, for example, is brought into contact with the generatrix direction of the roll, and a mold release agent 6 is applied therein using the porous tetrafluoroethylene resin tube. It is characterized by making it do so.
上記に於いて多孔質チユーブ７はやわらかいの
で支持体１（第１図）又は４（第２図）にて支持
する。又多孔質チユーブは離型剤の浸出部である
多孔の必要開孔部以外を弗素ゴム又は他の材料に
て多孔を例えば塗布してふさいでいる。これは離
型剤の吐出量を所定量にしかも均一にするためで
ある。 In the above case, since the porous tube 7 is soft, it is supported by the support 1 (FIG. 1) or 4 (FIG. 2). Further, in the porous tube, fluororubber or other material is coated to close the pores other than the necessary pores which are the leaching part of the mold release agent. This is to make the discharge amount of the mold release agent a predetermined amount and uniform.
なお第１，２図中２は四弗化エチレン樹脂多孔
質チユーブの閉孔部、３は四弗化エチレン樹脂多
孔質チユーブの開孔部、５は注入口、である。 In Figures 1 and 2, 2 is a closed pore portion of the porous tetrafluoroethylene resin tube, 3 is an open hole portion of the porous tetrafluoroethylene resin tube, and 5 is an injection port.
しかし乍ら上記に於いても未だ下記のような問
題点がある。即ち多孔質チユーブの浸出部以外の
部分の孔を閉じるに手間を要する。 However, even with the above, the following problems still exist. That is, it takes time and effort to close the pores of the porous tube other than the exudation part.
（本発明の構成）
この点に鑑み本発明はより簡易にこれを行うと
するものである。本発明の複写機の離型剤塗布装
置は、開口部の幅Ａが内腔部の最大幅Ｂより小さ
い開口部付き内腔部を形成する分割された支持体
を用い、この支持体を合体させて両端をシールし
た四弗化エチレン樹脂多孔質チユーブをその離型
剤浸出部となる部分を開口部より突出させて内腔
部に抱え込み、多孔質チユーブの開口部より突出
させた離型剤浸出部となる部分以外の部分の多孔
を多孔質チユーブと支持体内腔壁との当接により
閉塞するようにしたことを特徴とする。(Structure of the present invention) In view of this point, the present invention is intended to perform this more simply. The release agent applicator for a copying machine of the present invention uses a divided support body forming a lumen with an opening in which the width A of the opening is smaller than the maximum width B of the lumen part, and combines the supports. A porous tube of tetrafluoroethylene resin with both ends sealed is held in the inner cavity with the part that will become the release agent exudation part protruding from the opening, and the mold release agent is made to protrude from the opening of the porous tube. It is characterized in that the pores in the portion other than the portion that becomes the exudation portion are closed by contact between the porous tube and the inner wall of the support body.
即ち本発明は両端をシールした四弗化エチレン
樹脂多孔質チユーブの離型剤浸出部となる以外の
部分を支持体にて当接支持することにより孔を閉
じるものである。このため支持体は分割されそれ
を合体して用いるが、その横断面に於いて、多孔
質チユーブの離型剤浸出部が突出する開口部幅
が、多孔質チユーブを抱え込む内腔部最大幅より
小である。 That is, the present invention closes the pores by abutting and supporting a portion of a porous polytetrafluoroethylene resin tube whose both ends are sealed, other than the part from which the mold release agent leaches out, with a support. For this reason, the support is divided and used by combining them, but in its cross section, the opening width from which the release agent exudation part of the porous tube protrudes is wider than the maximum width of the inner cavity that holds the porous tube. It is small.
上記のように支持体の組付を利用して多孔質チ
ユーブの離型剤浸出部以外の部分の多孔の閉塞を
行うことが出来る。なお多孔質チユーブ内には予
め或いは後から離型剤を注入又は封入する。 As described above, the pores in the portion of the porous tube other than the part from which the release agent is leached can be closed by assembling the support. Note that a mold release agent is injected or sealed into the porous tube beforehand or afterward.
以下例示の図面に就いて本発明を更に詳細に説
明する。 The present invention will be explained in more detail below with reference to the illustrative drawings.
第３，４図は本発明の離型剤塗布装置を示し、
２０は四弗化エチレン樹脂多孔質チユーブを示
し、これは液状潤滑剤を含む四弗化エチレン樹脂
混和物をチユーブ状に押出成型後、延伸し、更に
焼結によつて得られる特公昭42−13560号、特願
昭50−155226号（特公昭58−15295号公報）に開
示の孔径が均一にコントロールされた微細孔、好
ましくは0.1〜10μｍまでの孔径を有し、その多孔
度が50〜85％、外径が５〜50mm、肉厚が0.1〜５
mmの構造を有した四弗化エチレン樹脂多孔質チユ
ーブ例えば住友電工製ポアフロンチユーブであ
る。 Figures 3 and 4 show the mold release agent application device of the present invention,
20 indicates a porous tube of tetrafluoroethylene resin, which is obtained by extruding a tetrafluoroethylene resin mixture containing a liquid lubricant into a tube shape, stretching it, and then sintering it. No. 13560, Japanese Patent Application No. 50-155226 (Japanese Patent Publication No. 58-15295) discloses fine pores with uniformly controlled pore diameters, preferably 0.1 to 10 μm, and a porosity of 50 to 10 μm. 85%, outer diameter 5~50mm, wall thickness 0.1~5
A polytetrafluoroethylene resin porous tube having a structure of 5 mm is used, for example, a pore front tube manufactured by Sumitomo Electric.
２１は支持体で２つ割りよりなる。割は図ａの
如く上下に分けてもよいし、図ｂの如く左右に分
けてもよい。支持体２１はその多孔質チユーブ２
０を抱き込む内腔部２２の最大幅部Ｂは多孔質チ
ユーブの離型剤浸出部が突出する開口部２３の幅
Ａより大きい（Ａ＜Ｂ）。 21 is a support which is divided into two parts. The partition may be divided into upper and lower parts as shown in Figure a, or left and right parts as shown in Figure B. The support 21 has its porous tube 2
The maximum width B of the lumen 22 that encloses the 0 is larger than the width A of the opening 23 from which the release agent exudation part of the porous tube projects (A<B).
これにより開口部から突出する以外の多孔質チ
ユーブの部分の多孔を合体された例えば融着合体
された支持体がその当接により閉塞すると同時に
多孔質チユーブを支持する。 As a result, the pores in the portion of the porous tube other than those protruding from the opening are closed by the combined, for example fused, support, and simultaneously support the porous tube.
（本発明の効果）
以上の様な本発明によると多孔質チユーブの支
持体による支持と同時にその当接により多孔質チ
ユーブの離型剤浸出部以外の部分の多孔を閉塞出
来る、即ち極めて簡易に冒頭記載の優れた離型剤
塗布装置が得られる。(Effects of the present invention) According to the present invention as described above, the pores of the porous tube other than the part where the release agent seeps out can be closed by simultaneously supporting the porous tube with the support, and thereby blocking the pores of the porous tube other than the part where the release agent has leached out. The excellent release agent coating device described at the outset is obtained.
なお本発明に於いては前記の如く多孔質チユー
ブ内には離型剤を予め注入又は封入しておいても
よいし、或いは後から注入口から注入又は封入し
てもよく特に限定されないが、前者の場合は使い
捨てに便利である。 In the present invention, the mold release agent may be injected or enclosed in the porous tube in advance as described above, or may be injected or enclosed later through the injection port, but there are no particular limitations. In the former case, it is convenient for disposable use.
第１，２図は何れも本発明者が先に開発した離
型剤塗布装置の説明図を例示し、第１図は正面図
（図ａ）と横断面図（図ｂ）、第２図は正面図であ
る。第３，４図は何れも本発明の離型剤塗布装置
の説明図を例示し、第３図は横断面図（図ａ）と
平面図（図ｂ）、第４図は横断面図である。
１……支持体、２……四弗化エチレン樹脂多孔
質チユーブの閉孔部、３……四弗化エチレン樹脂
多孔質チユーブの開孔部、４……支持体、５……
注入口、６……離型剤、７……四弗化エチレン樹
脂多孔質チユーブ、１４……定着ロール（加熱ロ
ール）、１５……弾性加圧ロール、１６……コピ
紙、２０……四弗化エチレン樹脂多孔質チユー
ブ、２１……支持体、２２……内腔部、２３……
開口部。
Figures 1 and 2 both illustrate explanatory diagrams of the release agent application device developed earlier by the present inventor, with Figure 1 being a front view (Figure a) and a cross-sectional view (Figure b), and Figure 2 being a front view (Figure a) and a cross-sectional view (Figure b). is a front view. Figures 3 and 4 both illustrate explanatory diagrams of the mold release agent coating device of the present invention, Figure 3 is a cross-sectional view (Figure a) and a plan view (Figure b), and Figure 4 is a cross-sectional view. be. DESCRIPTION OF SYMBOLS 1...Support, 2...Closed pore of tetrafluoroethylene resin porous tube, 3...Open pore of tetrafluoroethylene resin porous tube, 4...Support, 5...
Inlet, 6... Release agent, 7... Tetrafluoroethylene resin porous tube, 14... Fixing roll (heating roll), 15... Elastic pressure roll, 16... Copy paper, 20... Four Fluorinated ethylene resin porous tube, 21... Support, 22... Inner cavity, 23...
Aperture.
Claims (1)
開口部付き内腔部を形成する分割された支持体を
用い、この支持体を合体させて両端をシールした
四弗化エチレン樹脂多孔質チユーブをその離型剤
浸出部となる部分を開口部より突出させて内腔部
に抱え込み、多孔質チユーブの開口部より突出さ
せた離型剤浸出部となる部分以外の部分の多孔を
多孔質チユーブと支持体内腔壁との当接により閉
塞するようにしたことを特徴とする複写機の離型
剤塗布装置。 ２ 四弗化エチレン樹脂多孔質チユーブ内に離型
剤を予め注入又は封入する特許請求の範囲第１項
記載の複写機の離型剤塗布装置。 ３ 四弗化エチレン樹脂多孔質チユーブ内に離型
剤を後から注入又は封入する特許請求の範囲第１
項記載の複写機の離型剤塗布装置。[Scope of Claims] 1. A divided support body forming a lumen with an opening in which the width A of the opening is smaller than the maximum width B of the lumen part is used, and the supports are combined and both ends are sealed. A polytetrafluoroethylene resin porous tube is held in the inner cavity with the part that will become the release agent leaching part protruding from the opening of the porous tube, except for the part that will become the release agent leaching part that protrudes from the opening of the porous tube. 1. A release agent applicator for a copying machine, characterized in that the pores in the portion are closed by contact between the porous tube and the inner wall of the support body. 2. A mold release agent application device for a copying machine according to claim 1, wherein a mold release agent is injected or sealed in advance into the tetrafluoroethylene resin porous tube. 3. Claim 1, in which a mold release agent is later injected or encapsulated into the polytetrafluoroethylene resin porous tube.
A mold release agent coating device for a copying machine as described in 2.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8894383A JPS59214061A (en) | 1983-05-19 | 1983-05-19 | Release agent coating device of copying machine |
| EP84105520A EP0126415B1 (en) | 1983-05-19 | 1984-05-15 | Release agent applicator for use with copying machine |
| DE8484105520T DE3462832D1 (en) | 1983-05-19 | 1984-05-15 | Release agent applicator for use with copying machine |
| US06/610,748 US4580521A (en) | 1983-05-19 | 1984-05-16 | Release agent applicator for use with copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8894383A JPS59214061A (en) | 1983-05-19 | 1983-05-19 | Release agent coating device of copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59214061A JPS59214061A (en) | 1984-12-03 |
| JPH0378626B2 true JPH0378626B2 (en) | 1991-12-16 |
Family
ID=13956958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8894383A Granted JPS59214061A (en) | 1983-05-19 | 1983-05-19 | Release agent coating device of copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59214061A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52110049A (en) * | 1976-03-12 | 1977-09-14 | Canon Inc | Electrophotographic fixer |
| JPS5332031U (en) * | 1976-08-25 | 1978-03-20 | ||
| JPS55153974A (en) * | 1979-05-18 | 1980-12-01 | Canon Inc | Fixing device |
| JPS5677875A (en) * | 1979-11-28 | 1981-06-26 | Canon Inc | Roller fixing device |
| JPS56161570A (en) * | 1980-05-13 | 1981-12-11 | Sumitomo Electric Ind Ltd | Coater for release agent of copying machine |
| JPS56165170A (en) * | 1980-05-26 | 1981-12-18 | Ricoh Co Ltd | Original feeding plate for copying machine |
| JPS56165176A (en) * | 1980-05-26 | 1981-12-18 | Canon Inc | Fixing device |
| JPS5823357B2 (en) * | 1979-03-02 | 1983-05-14 | 株式会社荏原製作所 | Compost fermentation method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774454U (en) * | 1980-10-23 | 1982-05-08 | ||
| JPS5778064U (en) * | 1980-10-30 | 1982-05-14 | ||
| JPS5823357U (en) * | 1981-08-05 | 1983-02-14 | キヤノン株式会社 | pressure fixing device |
-
1983
- 1983-05-19 JP JP8894383A patent/JPS59214061A/en active Granted
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52110049A (en) * | 1976-03-12 | 1977-09-14 | Canon Inc | Electrophotographic fixer |
| JPS5332031U (en) * | 1976-08-25 | 1978-03-20 | ||
| JPS5823357B2 (en) * | 1979-03-02 | 1983-05-14 | 株式会社荏原製作所 | Compost fermentation method |
| JPS55153974A (en) * | 1979-05-18 | 1980-12-01 | Canon Inc | Fixing device |
| JPS5677875A (en) * | 1979-11-28 | 1981-06-26 | Canon Inc | Roller fixing device |
| JPS56161570A (en) * | 1980-05-13 | 1981-12-11 | Sumitomo Electric Ind Ltd | Coater for release agent of copying machine |
| JPS56165170A (en) * | 1980-05-26 | 1981-12-18 | Ricoh Co Ltd | Original feeding plate for copying machine |
| JPS56165176A (en) * | 1980-05-26 | 1981-12-18 | Canon Inc | Fixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59214061A (en) | 1984-12-03 |
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