JP4594768B2 - Tubular film inner peripheral surface processing apparatus and tube-shaped film inner peripheral surface processing method - Google Patents

Description

  The present invention relates to a tubular film inner peripheral surface processing apparatus and a tube-shaped film inner peripheral surface processing method, and in particular, efficiently processes the inner peripheral surface of a tubular film made of PFA (tetrafluoroethylene / perfluoroalkoxyethylene copolymer). The present invention relates to a tube-shaped film inner peripheral surface processing apparatus and a tube-shaped film inner peripheral surface processing method that can reduce variations in processing of the inner peripheral surface.

  2. Description of the Related Art Conventionally, a roller in which an elastic layer made of silicone rubber and a PFA tubular film are sequentially coated on the outer peripheral surface of a metal core has been used to fix toner onto paper in a copying machine, a printer, or a facsimile machine. Since the PFA tubular film has low adhesiveness to the toner, it is possible to prevent the toner from adhering to the outer peripheral surface of the roller. Further, since the PFA tubular film is excellent in heat resistance and wear resistance, the roller can be driven for a long time while the metal core is heated.

  A roller using such a PFA tube-shaped film, for example, fixes a PFA tube-shaped film to the inner surface of a cylindrical mold and has a metal core in a space surrounded by the inner peripheral surface of the PFA tube-shaped film. Is inserted between the PFA tubular film and the metal core, and the injected silicone rubber is heated and cured.

Here, since the adhesiveness between the PFA tubular film and the silicone rubber is not good, the adhesiveness with the silicone rubber is improved by treating the inner peripheral surface of the PFA tubular film. Yes.
JP 2003-122164 A JP-A-5-86222 Japanese Patent No. 3431079 JP-A-9-208727

  As a method for treating the inner peripheral surface of the PFA tubular film, for example, there is a method using a chemical solution (see, for example, Patent Document 1). However, in this method, since the chemical solution is injected after sealing one end of the PFA tubular film under pressure, a crease is formed in the processed PFA tubular film. There was a problem. When the PFA tubular film having the folds formed in this way is used as a toner fixing roller, toner fixing failure may occur due to the presence of irregularities in the vicinity of the folds. Further, in this case, it is necessary to fix the toner to the paper with a strong linear pressure, and the paper after the toner fixing is difficult to be separated from the roller. Therefore, a considerable amount of silicone oil is applied to the outer peripheral surface of the PFA tubular film. There was a need.

  In order to prevent the folds from being formed in the PFA tube-shaped film, there is a method of turning the PFA tube-shaped film upside down after the outer peripheral surface of the PFA tube-shaped film is continuously treated in the chemical solution tank (for example, patents). Reference 2). However, this method has a problem that the processing efficiency is poor because the PFA tubular film needs to be turned over after chemical treatment.

In addition, as another method of processing the inner peripheral surface of the PFA tubular film, there is a method in which a predetermined pretreatment liquid is attached to the inner peripheral surface of the PFA tubular film and then irradiated with ultraviolet laser light ( For example, see Patent Document 3). However, in this method, the treatment of the inner peripheral surface of the PFA tubular film is likely to vary, and the adhesion between the PFA tubular film and the silicone rubber may not be sufficient.

  Further, there is a method for uniformly treating the inner peripheral surface of the object to be processed by immersing the object in a conductive liquid and processing the inner peripheral surface of the object to be processed using plasma (for example, Patent Document 4). reference). However, when this method is used for the treatment of the inner peripheral surface of the PFA tubular film, there is a problem that the inner peripheral surface treatment of the PFA tubular film varies depending on the installation position of the gas introduction pipe serving as an electrode. there were.

  An object of the present invention is to provide a tube-shaped film inner surface processing apparatus and a tube-shaped film inner surface processing method capable of efficiently performing inner surface processing and reducing variations in inner surface processing. There is to do.

  In the present invention, a rod-shaped electrode is inserted into a space surrounded by the inner peripheral surface of the tube-shaped film, and the tube-shaped film is immersed in the conductive liquid while the rod-shaped electrode is inserted. An apparatus used to treat the inner peripheral surface of a tubular film with plasma generated between the first electrode and the second electrode, which are opposed to each other at a predetermined interval and are connected by a connecting member. Including a first pedestal and a second pedestal, a first convex portion installed on the first pedestal and projecting in the direction of the second pedestal, and a second convex portion installed on the second pedestal and projecting in the direction of the first pedestal. The first convex part is provided with a through-hole through which the rod-shaped electrode can be inserted. The rod-shaped electrode advances through the through-hole of the first convex part in the projecting direction of the first convex part or the first convex part projects. Can reverse in the opposite direction A cube-shaped film inner circumferential surface processing apparatus.

  Here, in the tubular film inner peripheral surface treatment apparatus of the present invention, the second convex portion has an opening at the tip thereof, and the tip of the rod-shaped electrode is fitted into the second convex portion from the opening. Can be.

  Moreover, in the tubular film inner peripheral surface treatment apparatus of the present invention, the second convex portion can be rotatably installed with the protruding direction of the second convex portion as the rotation axis direction.

  Moreover, in the tubular film inner peripheral surface treatment apparatus of the present invention, the rod-shaped electrode is a hollow body, and a gas inlet that can introduce gas into the hollow portion of the rod-shaped electrode is installed at one end of the rod-shaped electrode. And the gas blower outlet which can blow off the gas introduce | transduced into the hollow part of the rod-shaped electrode may be installed in the other end of the rod-shaped electrode.

  Moreover, in the tubular film internal peripheral surface processing apparatus of this invention, it is preferable that the front-end | tip of a rod-shaped electrode, a 1st convex part, and a 2nd convex part is formed in the taper shape, respectively. Here, it is preferable that the taper surface of the rod-shaped electrode and the taper surface of the first convex portion are parallel to each other.

  Moreover, in the tubular film inner peripheral surface treatment apparatus of the present invention, including a support member installed inside the second convex portion, and an elastic member installed between the support member and the second pedestal, When the tip of the rod-shaped electrode and the tip of the support member are not in contact with each other, the tip of the support member is exposed from the second convex portion and is supported by the advance of the rod-shaped electrode after the tip of the rod-shaped electrode and the tip of the support member are in contact with each other. The member can compress the elastic member to push the tip of the support member into the second convex portion, and is elastic when the rod-like electrode is retracted after the tip of the support member is pushed into the second convex portion. The member can be extended to push the support member back toward the distal end side of the second convex portion.

  Moreover, in the tubular film internal peripheral surface processing apparatus of this invention, it is preferable that the taper surface of a 2nd convex part and the taper surface of a supporting member are parallel.

  Moreover, in the tubular film internal peripheral surface processing apparatus of this invention, it installs on the 1st guide rail installed in the opposite side to the side in which the 1st convex part of the 1st base is installed, and a 1st guide rail. A first moving member movable along the first guide rail, and a rod-like electrode is fixed to the first moving member, and the rod-like electrode moves forward or backward as the first moving member moves. It is a tubular film inner peripheral surface processing apparatus.

  Here, in the tubular film inner peripheral surface treatment apparatus of the present invention, a stopper capable of preventing the movement of the first moving member is installed on the first guide rail, and the movement of the first moving member is performed by the stopper. It is preferable that the taper surface of the rod-shaped electrode and the taper surface of the first convex portion are arranged in a straight line at the position where the hindrance is prevented.

  Moreover, in the tubular film internal peripheral surface processing apparatus of this invention, the 2nd guide rail installed in parallel with the 1st guide rail at predetermined intervals, and the 2nd fixed to the 1st guide rail. The second moving member is mounted on the second guide rail so as to be movable along the second guide rail, and the first guide rail is moved to the second guide rail along with the movement of the second moving member. Can move along.

  Moreover, in the tubular film internal peripheral surface processing apparatus of this invention, the gas exhaust port installed in the 1st moving member, and the extendable gas exhaust pipe installed between the 1st moving member and the 1st base. And the gas exhaust pipe surrounds at least a part of the rod-shaped electrode inserted through the through hole of the first convex portion, and between the outer peripheral surface of the rod-shaped electrode and the inner peripheral surface of the first convex portion. Is provided with a gap, and gas passing through the gap may be discharged from the gas outlet through the inside of the gas exhaust pipe.

  Moreover, the tubular film internal peripheral surface treatment apparatus of this invention may contain the container for accommodating a conductive liquid, and the earth electrode for making it earth | ground by being immersed in a conductive liquid.

  Moreover, the tubular film inner peripheral surface treatment apparatus of the present invention is a gas jet capable of spraying a removal gas for removing the conductive liquid adhering to the outer peripheral surface of the tubular film after the inner peripheral surface treatment of the tubular film. An apparatus may be included.

  Furthermore, this invention is a method of processing the inner peripheral surface of a tube-shaped film using any one of the above-described tube-shaped film inner surface processing apparatuses, and the tube-shaped film is formed on the first and second convex portions. And inserting the rod-shaped electrode into the space surrounded by the inner peripheral surface of the tubular film by advancing the rod-shaped electrode toward the second convex portion through the through hole of the first convex portion. A step of immersing the tubular film in the conductive liquid, treating the inner peripheral surface of the tubular film with plasma generated between the rod-shaped electrode and the conductive liquid, and making the tubular film conductive A tubular film inner peripheral surface comprising: a step of pulling out from the liquid; and a step of retracting the rod-shaped electrode to pull out the rod-shaped electrode from the space surrounded by the inner peripheral surface of the tube-shaped film. It is a management method.

  Here, the tubular film inner peripheral surface treatment method of the present invention may include a step of reducing twist generated in the tubular film by rotating the second convex portion.

  Moreover, in the tubular film inner peripheral surface treatment method of the present invention, after the tubular film is pulled out from the conductive liquid, an expansion gas is introduced between the outer peripheral surface of the rod-shaped electrode and the inner peripheral surface of the tubular film. And a rod-shaped electrode can be extracted without making it contact with the internal peripheral surface of a tubular film.

  Moreover, the tubular film inner peripheral surface treatment method of the present invention may include a step of removing the conductive liquid attached to the outer peripheral surface of the tubular film when the tubular film is pulled up from the conductive liquid. Here, “removing the conductive liquid” means that at least a part of the conductive liquid attached to the outer peripheral surface of the PFA tubular film is removed.

  In the present invention, “parallel” includes not only the case of being completely parallel but also the case of being substantially parallel.

  Further, in the present invention, “linearly arranged” includes not only the case of being completely linearly arranged but also the case of being substantially linearly arranged.

  ADVANTAGE OF THE INVENTION According to this invention, the inner peripheral surface processing apparatus and the tubular film inner peripheral surface processing method which can perform the internal peripheral surface processing efficiently and can reduce the dispersion | variation in internal peripheral surface processing are provided. can do.

  Embodiments of the present invention will be described below. In the drawings of the present invention, the same reference numerals represent the same or corresponding parts.

  FIG. 1 shows a schematic front view of a preferred example of the tubular film inner peripheral surface treatment apparatus of the present invention, and FIG. 2 schematically shows a preferred example of the tubular film inner peripheral surface treatment apparatus of the present invention shown in FIG. Shows a side view. The tubular film inner peripheral surface processing apparatus is installed on a first pedestal 10 and a second pedestal 9 which are opposed to each other at a predetermined interval and are connected by connecting members 5 and 6, and a first pedestal 10. A hollow first convex portion 1 projecting in the direction of the two pedestals 9 and a hollow second convex portion 2 installed on the second pedestal 9 and projecting in the direction of the first pedestal 10 are included.

  Here, the 1st convex part 1 is provided with the through-hole which can insert the rod-shaped electrode 3, and the hollow stainless steel rod-shaped electrode 3 is penetrated by the through-hole. At one end of the rod-shaped electrode 3, a gas introduction port 27 through which a gas can be introduced into the hollow portion of the rod-shaped electrode 3 is provided. Further, a support member 4 is installed inside the second convex portion 2, and the tip of the support member 4 is exposed from the second convex portion 2. Moreover, the 1st convex part 1 is united with the fixed board | substrate 39, and when the fixed board | substrate 39 is connected to the 1st base 10 so that attachment or detachment is possible with the two screws 16, the 1st convex part 1 is 1st. It is installed on the base 10. Moreover, the 2nd convex part 2 is united with the fixed board | substrate 41, and when the fixed board | substrate 41 is connected with the 2nd base 9 so that attachment or detachment is possible with the two screws 15, the 2nd convex part 2 becomes 2nd. It is installed on the pedestal 9. The end portions of the tubular film are fitted into the first convex portion 1 and the second convex portion 2, respectively. However, the first convex portion 1 and the second convex portion 2 are detachably installed as described above, thereby increasing the size. Since the 1st convex part 1 and the 2nd convex part 2 from which thickness differs can be changed at any time, it becomes possible to respond to the change of the size of the tubular film fitted.

  In addition, two first guide rails 11 and 12 are provided above the first pedestal 10 on the side opposite to the side on which the first convex portion 1 of the first pedestal 10 is installed (below the first pedestal 10). A movable first moving member 28 installed along the first guide rails 11 and 12 is installed on the first guide rails 11 and 12. Further, the rod-shaped electrode 3 is fixed to the first moving member 28, and a bellows-like stretchable gas exhaust pipe 8 is installed between the first moving member 28 and the first pedestal 10. Both ends of the gas exhaust pipe 8 are fixed to the first moving member 28 and the first base 10, respectively, and surround a part of the periphery of the rod-shaped electrode 3. Further, a gas exhaust port 26 is formed in the first moving member 28, and the gas flowing through the gas exhaust pipe 8 can be exhausted from the gas exhaust port 26. The first guide rails 11 and 12 can be provided with stoppers 31 that can prevent the first moving member 28 from moving.

  In addition, behind the first guide rails 11 and 12, second guide rails 30 and 32 are installed in parallel with the first guide rails 11 and 12 at a predetermined interval. Here, a second moving member 29 is fixed to the first guide rails 11 and 12 so as to connect the first guide rails 11 and 12, and the second moving member 29 extends along the second guide rails 30 and 32. The second guide rails 30 and 32 are movably installed. Accordingly, the first guide rails 11 and 12 can freely move in the vertical direction along the second guide rails 30 and 32 as the second moving member 29 moves.

  Further, a container 40 containing the conductive liquid 21 is installed below the second pedestal 9, and a ground electrode 23 is fixed to the container 40 by a fixing member 22. In addition, a hollow gas ejection device 24 is installed in the upper part of the container 40.

  FIG. 3 is a schematic enlarged side perspective view of the peripheral portion of the first convex portion 1 shown in FIGS. 1 and 2. As shown in FIG. 3, the first convex portion 1 and the rod-like electrode 3 inserted through the first convex portion 1 are each formed in a tapered shape with a tip on the protruding direction side of the first convex portion 1 being tapered. And the taper surface 42 of the rod-shaped electrode 3 and the taper surface 43 of the 1st convex part 1 are parallel, These taper surfaces are arranged in linear form. By setting it as such a structure, it becomes easy to fit the end of a tubular film in the 1st convex part 1. FIG. Further, a gas outlet 17 through which gas introduced from the gas inlet 27 shown in FIGS. 1 and 2 can be blown out is installed at the tip of the rod-like electrode 3. A gap is provided between the outer peripheral surface of the rod-shaped electrode 3 and the inner peripheral surface of the first convex portion 1, and the gas blown out from the gas outlet 17 passes through this gap, and the gas exhaust pipe 8. Can be led inside. Further, by providing this gap, the rod-shaped electrode 3 moves forward (moves downward) in the protruding direction of the first protruding portion 1 through the through hole of the first protruding portion 1 or is opposite to the protruding direction of the first protruding portion 1. It can be retracted (moved upward) in the direction. That is, the rod-like electrode 3 can freely move in the vertical direction through the through hole of the first convex portion 1.

  Moreover, it is preferable that at least a part of the outer peripheral surface of the rod-like electrode 3 is covered with a dielectric. As the dielectric, for example, plastic such as polytetrafluoroethylene or polyethylene terephthalate, glass, mica, silicon dioxide, aluminum oxide, zirconium dioxide, titanium dioxide, metal oxide such as titanium dioxide, or barium titanate can be used. Further, as the material of the rod-shaped electrode 3, for example, a metal simple substance such as copper or aluminum, an alloy such as brass or an intermetallic compound can be used in addition to stainless steel. Further, in the present invention, the shape of the rod-shaped electrode 3 is not particularly limited as long as it can be installed in a space surrounded by the inner peripheral surface of the tube-shaped film, but variation in processing of the inner peripheral surface of the tube-shaped film. From the viewpoint of further reducing the thickness, the side surface shape of the rod-shaped electrode 3 is preferably a shape having a surface parallel to the inner peripheral surface of the tubular film. Further, as described above, the preferable shape of the tip of the rod-shaped electrode 3 is a tapered tip, and the tapered surface 42 of the rod-shaped electrode 3 and the tapered surface 43 of the first convex portion 1 are parallel to each other. Shape is preferred.

  FIG. 4 is a schematic enlarged side perspective view of the peripheral portion of the second convex portion 2 shown in FIGS. 1 and 2. As shown in FIG. 4, the 2nd convex part 2 has an opening part in the front-end | tip, and can insert the front-end | tip of the rod-shaped electrode 3 which has advanced to the inside of the 2nd convex part 2 from the opening part. It has a structure. Further, the second convex portion 2 is hollow, a support member 4 is installed inside the second convex portion 2, and the tip of the support member 4 is exposed from the second convex portion 2. Moreover, the 2nd convex part 2 and the supporting member 4 are each formed in the taper shape where the front-end | tip of the protrusion direction side of the 2nd convex part 2 is tapered. And the taper surface 44 of the 2nd convex part 2 and the taper surface 45 of the supporting member 4 are parallel, These taper surfaces are arranged in linear form. By setting it as such a structure, it becomes easy to fit the end of a tubular film in the 2nd convex part 2. FIG. An elastic member 13 made of a coil spring is installed between the second convex portion 2 and the support member 4. In addition, as the elastic member 13 used for this invention, you may use the elastic body which consists of springs, rubber | gum, etc. other than a coil spring.

  The second pedestal 9 is provided with a rotating means 7 made of a bearing or the like, and the second convex portion 2 is rotatable with the protruding direction of the second convex portion 2 as the rotation axis direction. By making the 2nd convex part 2 rotatable, the twist which arises in the tubular film fitted by the 2nd convex part 2 can be decreased. The rotating means 7 used in the present invention may be a rotating means other than a bearing.

  FIG. 5 shows a schematic side view of the container 40 shown in FIGS. 1 and 2. As shown in FIG. 5, the conductive liquid 21 is accommodated in the container 40. An L-shaped ground electrode 23 is fixed to the container 40 by a fixing member 22, and one end of the ground electrode 23 protrudes from the side surface of the container 40 to the outside. And in the upper part of the container 40, in order to remove the conductive liquid 21 adhering to the outer peripheral surface of the tubular film when the tubular film after the inner peripheral surface treatment is pulled up from the conductive liquid 21, the tubular film A gas jetting device 24 capable of spraying the removal gas on the outer peripheral surface of is provided. In the present invention, from the viewpoint of further reducing variation in processing of the inner peripheral surface of the tubular film, the side surface shape of the ground electrode 23 facing the side surface of the rod-shaped electrode 3 is a surface parallel to the side surface of the facing rod-shaped electrode 3. It is preferable that it is a shape which has.

  FIG. 6 shows a schematic top view of the gas ejection device 24 shown in FIG. The gas ejection device 24 is formed in a ring shape, and a plurality of holes are formed on the inner peripheral surface thereof. And removal gas is introduce | transduced into the inside of the ring-shaped main body of the gas ejection apparatus 24, and removal gas is blown off in the direction of the arrow 25 shown in FIG. 6 from the several hole formed in the ring-shaped inner peripheral surface.

  Hereinafter, a preferable example of a method for performing the inner peripheral surface treatment of the PFA tubular film using the above-described tubular film inner peripheral surface treatment apparatus of the present invention will be described.

  First, as shown in the schematic front view of FIG. 7 (a) and the schematic side view of FIG. 8 (a), the first convex portion 1 of the tubular film inner peripheral surface treatment apparatus of the present invention described above is hollow. After one end of the cylindrical PFA tubular film 18 is fitted, an O-ring 19 is further fitted to fix the PFA tubular film 18. Next, after fitting the other end portion of the PFA tubular film 18 into the second convex portion 2, the O-ring 20 is further fitted to fix the PFA tubular film 18. Here, as shown in the schematic perspective view of FIG. 9, for example, the tubular film 18 made of PFA has a hollow cylindrical shape, and a PFA resin made of a copolymer of tetrafluoroethylene and perfluoroalkoxyethylene is used. For example, it is formed into a hollow shape by extrusion molding or injection molding.

  Then, as shown in the schematic front view of FIG. 7 (b) and the schematic side view of FIG. 8 (b), the moving member 28 is moved downward along the first guide rails 11 and 12, thereby moving. The rod-shaped electrode 3 fixed to the member 28 is advanced in the protruding direction of the first convex portion with the compression of the gas exhaust pipe 8. Thereby, the rod-shaped electrode 3 will be in the state penetrated in the space enclosed by the internal peripheral surface of the tubular film 18 made from PFA. At this time, the tip of the rod-shaped electrode 3 is fitted into the second convex portion 2.

  FIG. 10 shows a schematic enlarged side perspective view of the state of the peripheral portion of the first convex portion 1 at this time, and FIG. 11 shows a schematic enlarged side perspective view of the state of the peripheral portion of the second convex portion 2 at this time. The figure is shown. As shown in FIG. 10, the rod-shaped electrode 3 protrudes in the protruding direction of the first convex portion 1 in the peripheral portion of the first convex portion 1. As shown in FIG. 11, in the peripheral portion of the second convex portion 2, the support member 4 compresses the elastic member 13 in a state where the tip of the rod-like electrode 3 and the tip of the support member 4 are in contact with each other. It is in a state of being pushed into the convex portion 2.

  Subsequently, as shown in FIG. 12, gas is introduced into the hollow portion 14 of the rod-shaped electrode 3 from the gas inlet 27 at the upper portion of the rod-shaped electrode 3, and blown out from the gas outlet 17 at the lower portion of the rod-shaped electrode 3. Gas is filled between the outer peripheral surface of the electrode 3 and the inner peripheral surface of the PFA tubular film 18. Here, when the twist is generated in the PFA tubular film 18, the twist can be reduced by rotating the second convex portion 2 that is rotatably set when the gas is filled. it can. Moreover, as a gas to be filled, from the viewpoint of improving the adhesion between the inner peripheral surface of the PFA tubular film and the silicone rubber, a mixed gas composed of argon, helium, carbon dioxide, and methane, and argon and ammonia are used. A mixed gas composed of helium and ammonia, a mixed gas composed of argon, helium and ammonia, a mixed gas composed of argon, nitrogen and hydrogen, a mixed gas composed of argon, carbon dioxide and methane, helium and dioxide A mixed gas composed of carbon and methane, a mixed gas composed of helium, nitrogen, and hydrogen, or a mixed gas composed of argon, helium, nitrogen, and hydrogen is preferably used. Here, the gas other than argon and helium in the mixed gas is more preferably 2% by volume or less of the entire mixed gas from the viewpoint of improving the flatness of the inner peripheral surface of the PFA tubular film.

  The gas blown out from the gas outlet 17 at the lower part of the rod-shaped electrode 3 flows from the gap between the rod-shaped electrode 3 and the second convex portion 2 to the outer peripheral surface of the rod-shaped electrode 3 and the inner periphery of the PFA tubular film 18. It flows upward between the surfaces, flows into the hollow portion inside the gas exhaust pipe 8 from the gap between the rod-shaped electrode 3 and the second convex portion 2, and is discharged from the gas discharge port 26 of the first moving member 28. .

  Next, as shown in the schematic front view of FIG. 7C and the schematic side view of FIG. 8C, the second moving member 29 is moved downward along the two second guide rails 30 and 32. By doing so, the PFA tubular film 18 is immersed in the conductive liquid 21 accommodated in the container 40, and the outer peripheral surface of the PFA tubular film 18 is brought into contact with the conductive liquid 21.

  Subsequently, an AC electric field is formed between the outer peripheral surface of the rod-shaped electrode 3 and the conductive liquid 21 by applying a high frequency voltage to the rod-shaped electrode 3, and the outer peripheral surface of the rod-shaped electrode 3 and the PFA tubular film 18. The plasma of the gas filled between the inner peripheral surface of the gas is generated. Thereby, the inner peripheral surface treatment of the PFA tubular film 18 is performed. Here, the inner peripheral surface treatment of the PFA tubular film 18 was surrounded by the inner peripheral surface of the PFA tubular film 18 from the viewpoint of suppressing deformation during the inner peripheral surface treatment of the PFA tubular film 18. It is preferable that the space pressure is set to be equal to or higher than the pressure applied by the conductive liquid 21 to the outer peripheral surface of the PFA tubular film 18.

  After the processing of the inner peripheral surface of the PFA tubular film 18, the PFA tubular film 18 is moved into the container 40 by moving the second moving member 29 upward along the two second rails 30 and 32. It pulls up from the contained conductive liquid 21.

  At this time, the tubular film inner peripheral surface treatment apparatus of the present invention is in the state shown in FIGS. 7B and 8B. Here, when the tubular film 18 made of PFA is pulled up from the conductive liquid 21, the outer peripheral surface of the tubular film 18 made of PFA is blown in the direction of the arrow 25 by removing gas from the gas ejection device 24 shown in FIG. The conductive liquid 21 adhering to can be removed. Thereby, the effort which wipes off the conductive liquid 21 adhering to the outer peripheral surface of the PFA tubular film 18 can be saved. The conductive liquid 21 is removed by blowing a removal gas on the outer peripheral surface of the PFA tubular film 18 to which the conductive liquid 21 is adhered, for example, to evaporate the conductive liquid 21 and / or to remove the conductive liquid 21. This can be done by blowing away. Further, the pressure applied to the outer peripheral surface of the PFA tubular film 18 by blowing the removal gas is lower than the internal pressure of the PFA tubular film 18, so that deformation of the PFA tubular film 18 can be suppressed. Is preferable.

  Then, by moving the first moving member 28 upward and retracting the rod-like electrode 3 in the direction opposite to the protruding direction of the first convex portion 1, the space surrounded by the inner peripheral surface of the PFA tubular film 18 is obtained. The rod-shaped electrode 3 that is positioned is pulled upward from the space. At this time, the tubular film inner peripheral surface treatment apparatus of the present invention is in the state shown in FIGS. 7 (a) and 8 (a). Here, the first moving member 28 is retracted to a position where the movement is prevented by the stopper 31. As a result, the taper surface 43 of the rod-shaped electrode 3 and the taper surface 42 of the first convex portion 1 are linearly arranged as shown in FIG. 3, so that the PFA tubular film 18 is again fitted to the first convex portion 1. Processing efficiency is improved. Further, as shown in FIG. 3, as the rod-like electrode 3 is retracted, the elastic member installed inside the second convex portion 2 is extended, and the support member is pushed back toward the distal end side of the second convex portion 2. .

  Before pulling out the rod-shaped electrode 3, an expansion gas is introduced into the hollow portion of the rod-shaped electrode 3 from the gas inlet 27 of the rod-shaped electrode 3, and blown out from the gas outlet 17 below the rod-shaped electrode 3. 3 is preferably filled with an expansion gas between the outer peripheral surface of 3 and the inner peripheral surface of the PFA tubular film 18. Thereby, the PFA tube-shaped film 18 can be expanded, and the rod-shaped electrode located in the space surrounded by the inner peripheral surface of the PFA tube-shaped film 18 with the PFA tube-shaped film 18 expanded. By pulling 3 upward from the space, the inner peripheral surface of the PFA tubular film 18 after the treatment with the plasma can be prevented from being damaged when the rod-shaped electrode 3 is pulled upward. Further, from the viewpoint of further reducing the processing cost, it is preferable to use at least one of air and nitrogen as the expansion gas.

  Finally, the PFA tubular film 18 fixed between the first convex portion 1 and the second convex portion 2 is removed to obtain the PFA tubular film 18 whose inner peripheral surface is processed. it can.

  As in the present invention, the PFA tubular film 18 whose inner peripheral surface has been treated by the plasma has better adhesion to silicone rubber than a PFA tubular film that has not been subjected to inner peripheral surface treatment. . The reason is that the inner peripheral surface of the PFA tubular film in which ions or atoms constituting the plasma of the gas generated as described above are introduced in a functional group or the like, and the surface of the silicone rubber It is thought that some sort of suction force is working between them.

  As described above, in the present invention, the PFA tubular film 18 is fitted into the hollow first convex portion 1 and the second convex portion 2, and then the rod-shaped electrode 3 is inserted through the through hole of the first convex portion 1. The rod-shaped electrode 3 can be inserted into the space surrounded by the inner peripheral surface of the PFA tubular film 18 by advancing in the protruding direction of the one convex portion 1. Accordingly, in the present invention, since the variation in the installation position of the rod-shaped electrode 3 with respect to the inner circumferential surface of the PFA tubular film 18 is reduced, the variation in the inner circumferential surface processing due to the installation position of the first electrode is reduced as compared with the prior art. can do. Also, by automating the process of the inner peripheral surface treatment of the PFA tubular film 18 of the present invention, the inner peripheral surface treatment of the PFA tubular film 18 can be performed more efficiently. Moreover, in this invention, since the whole internal peripheral surface of the tubular film 18 made from PFA can be processed simultaneously by using the conductive liquid 21, efficient internal peripheral surface processing becomes possible. Furthermore, in the present invention, since no crease is formed during the processing of the inner peripheral surface of the PFA tubular film 18, the PFA tubular film 18 without a crease can be obtained. By applying the PFA tubular film 18 having no crease and excellent adhesiveness to the silicone rubber to the roller, toner fixing failure can be prevented.

  The PFA tubular film 18 having the inner peripheral surface processed as described above is fixed to the inner surface of the cylindrical mold, and a conventionally known silicone primer is applied to the inner peripheral surface, and then the PFA A metal core made of aluminum or the like is inserted into the space surrounded by the inner peripheral surface of the tubular film 18. Then, liquid silicone rubber is injected between the PFA tubular film 18 and the metal core, and the injected liquid silicone rubber is heated and cured to form silicone rubber on the outer peripheral surface of the metal core. A roller in which the elastic layer and the PFA tubular film 18 are sequentially coated is formed. Here, since the PFA tubular film 18 whose inner peripheral surface is treated according to the present invention is used, a roller having excellent adhesion between the PFA tubular film 18 and the elastic layer made of silicone rubber is provided. It is formed. Needless to say, the elastic layer made of silicone rubber may contain an additive such as a filler as long as silicone rubber is the main component.

  FIG. 13 is a schematic cross-sectional view illustrating the case where the roller formed as described above is used as a toner fixing roller. The roller 33 includes a metal core 34, an elastic layer 35 made of silicone rubber installed on the outer peripheral surface of the metal core 34, and the inner peripheral surface coated on the outer peripheral surface of the elastic layer 35 after processing. PFA tubular film 18 is included. A roller 38 is installed at a position facing the roller 33, and a sheet 37 with toner 36 attached is conveyed between these rollers. Next, the toner 36 is fixed on the paper 37 and discharged by the linear pressure between the roller 33 and the roller 38.

  In the present invention, the material and shape of the first convex portion 1 and the second convex portion 2 are not particularly limited, but as described above, the PFA tubular film 18 is made of the first convex portion 1 and the second convex portion 2. From the viewpoint of facilitating fitting into the first convex portion 1 and the second convex portion 2, it is preferable that the protruding ends of the first convex portion 1 and the second convex portion 2 are tapered.

  In the present invention, examples of the conductive liquid include water, aqueous hydrogen chloride, aqueous lithium chloride, aqueous sodium chloride, aqueous potassium chloride, aqueous ammonium chloride, aqueous potassium bromide, aqueous sodium iodide, aqueous potassium iodide, An aqueous potassium nitrate solution, an aqueous potassium hydrogen carbonate solution, an aqueous sodium hydroxide solution, an aqueous silver nitrate solution, an aqueous magnesium chloride solution, an aqueous calcium chloride solution, an aqueous strontium chloride solution, an aqueous barium chloride solution, an aqueous sodium sulfate solution, an aqueous copper sulfate solution or an aqueous zinc sulfate solution is used.

  In the present invention, the type of the removal gas is not particularly limited, but from the viewpoint of reducing the processing cost, it is preferable to use at least one of air and nitrogen as the removal gas.

  In the present invention, the means for installing the first moving member 28 on the first guide rails 11 and 12 is not particularly limited as long as the first moving member 28 is movable along the first guide rails 11 and 12. Further, the means for installing the second moving member 29 on the second guide rails 30 and 32 is not particularly limited as long as the second moving member 29 is movable along the second guide rails 30 and 32.

  Further, the present invention is not limited to the treatment of the inner peripheral surface of the PFA tube-shaped film. Instead of PFA, for example, polyester, polyether ether ketone, polyimide, polyether ketone, polyphenylene sulfide, aromatic polyamide, poly It can also be used for the treatment of the inner peripheral surface of a tubular film made of a material such as arylate, polyetherimide, polyamideimide, polysulfone, polyethersulfone, polystyrene, polymethylmethacrylate or polyurethane.

  In the present invention, the gas inlet 27 for filling the gas between the outer peripheral surface of the rod-shaped electrode 3 and the inner peripheral surface of the PFA tubular film 18 is to be installed on the upper portion of the rod-shaped electrode 3. It is not limited, You may form in the side part of the 1st convex part 1. FIG.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  According to the present invention, it is possible to efficiently treat the inner peripheral surface of the tubular film and reduce variations in the inner peripheral surface treatment of the tubular film.

It is a typical front view of a preferable example of the tubular film inner peripheral surface treatment apparatus of the present invention. It is a typical side view of a preferable example of the tubular film internal peripheral surface processing apparatus of this invention shown in FIG. It is a typical expanded side perspective view of the peripheral part of the 1st convex part shown in FIG. 1 and FIG. It is a typical expanded side perspective view of the peripheral part of the 2nd convex part shown in FIG. 1 and FIG. FIG. 3 is a schematic side view of the container shown in FIGS. 1 and 2. FIG. 6 is a schematic top view of the gas ejection device shown in FIG. 5. (A) is a typical front view of a preferable example of the tubular film inner peripheral surface treatment apparatus of the present invention after fixing the PFA tubular film to the first convex part and the second convex part, (b) FIG. 2 is a schematic front view of a preferred example of the tubular film inner peripheral surface treatment apparatus of the present invention shown in (a) after advancing a rod-shaped electrode, and (c) is a diagram showing a PFA tubular film made of a conductive liquid. It is a typical front view of a preferable example of the tubular film inner peripheral surface treatment apparatus of the present invention shown in FIG. (A) is a typical side view of a preferable example of the tubular film inner peripheral surface treatment apparatus of the present invention after fixing the PFA tubular film to the first convex part and the second convex part, (b) FIG. 2 is a schematic side view of a preferred example of the tubular film inner peripheral surface treatment apparatus of the present invention shown in (a) after advancing a rod-like electrode, and (c) is a diagram showing a PFA tubular film made of a conductive liquid. It is a typical side view of a preferable example of the tubular film inner peripheral surface treatment apparatus of the present invention shown in (a) after being immersed in the film. It is a typical perspective view of a preferable example of the PFA tubular film used in the present invention. In this invention, after the front-end | tip of a rod-shaped electrode and the front-end | tip of a supporting member contact, the typical expansion which illustrates the state of the peripheral part of a 1st convex part when the front-end | tip of a supporting member is pushed into the inside of a 2nd convex part. FIG. In the present invention, a schematic enlargement illustrating the state of the peripheral portion of the second convex portion when the distal end of the support member is pushed into the second convex portion after the distal end of the rod-shaped electrode and the distal end of the support member are in contact with each other FIG. It is a typical expanded sectional view illustrating a preferable example of the method of filling gas between the outer peripheral surface of a rod-shaped electrode and the inner peripheral surface of a PFA tubular film in the present invention. FIG. 4 is a schematic cross-sectional view illustrating a case where a roller formed using a PFA tubular film having an inner peripheral surface treated according to the present invention is used as a toner fixing roller.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 1st convex part, 2nd convex part, 3 rod-shaped electrode, 4 support member, 5,6 connection member, 7 rotation means, 8 gas exhaust pipe, 9 2nd base, 10 1st base, 11, 12 1st Guide rail, 13 elastic member, 14 hollow part, 15, 16 screw, 17 gas outlet, 18 PFA tubular film, 19, 20 O-ring, 21 conductive liquid, 22 fixing member, 23 ground electrode, 24 gas jet Device, 25 arrows, 26 gas discharge port, 27 gas introduction port, 28 first moving member, 29 second moving member, 30, 32 second guide rail, 31 stopper, 33, 38 roller, 34 metal core, 35 elastic layer 36, Toner, 37 Paper, 39, 41 Fixed substrate, 40 Container, 42, 43, 44, 45 Tapered surface.

Claims (18)

A rod-shaped electrode is inserted into a space surrounded by the inner peripheral surface of the tube-shaped film, and the tube-shaped film is immersed in a conductive liquid while the rod-shaped electrode is inserted, and the rod-shaped electrode, the conductive liquid, An apparatus used to treat the inner peripheral surface of the tubular film with plasma generated between
The rod-shaped electrode;
A first pedestal and a second pedestal facing each other at a predetermined interval and connected by a connecting member;
A first convex portion installed on the first pedestal and protruding in the direction of the second pedestal;
A second convex part installed on the second pedestal and projecting in the direction of the first pedestal,
The first convex part is provided with a through-hole through which the rod-shaped electrode can be inserted,
The rod-like electrode can be advanced through the through hole of the first convex portion in the protruding direction of the first convex portion or can be retracted in a direction opposite to the protruding direction of the first convex portion. Surface treatment device.   The said 2nd convex part has an opening part in the front-end | tip, The front-end | tip of the said rod-shaped electrode can be inserted in the inside of the said 2nd convex part from the said opening part, The Claim 1 characterized by the above-mentioned. Tube-shaped film inner peripheral surface processing apparatus.   The tubular film inner peripheral surface processing apparatus according to claim 1, wherein the second convex portion is rotatably installed with a protruding direction of the second convex portion as a rotation axis direction.   The rod-shaped electrode is a hollow body, and a gas inlet is provided at one end of the rod-shaped electrode to introduce gas into the hollow portion of the rod-shaped electrode, and the rod-shaped electrode is disposed at the other end of the rod-shaped electrode. The tubular film inner peripheral surface treatment apparatus according to any one of claims 1 to 3, further comprising a gas outlet through which gas introduced into a hollow portion of the electrode can be blown out.   The tube-shaped film inner peripheral surface treatment according to any one of claims 1 to 4, wherein tips of the rod-shaped electrode, the first convex portion, and the second convex portion are each formed in a tapered shape. apparatus.   6. The tubular film inner peripheral surface processing apparatus according to claim 5, wherein a taper surface of the rod-shaped electrode and a taper surface of the first convex portion are parallel to each other. A support member installed inside the second convex part;
An elastic member installed between the support member and the second pedestal,
When the tip of the rod-shaped electrode and the tip of the support member are not in contact, the tip of the support member is exposed from the second convex portion,
After the tip of the rod electrode contacts the tip of the support member, the support member compresses the elastic member by the advance of the rod electrode and pushes the tip of the support member into the second convex portion. Can
When the rod-like electrode is retracted after the tip of the support member is pushed into the second convex portion, the elastic member is extended to push the support member back toward the tip side of the second convex portion. The tubular film inner peripheral surface treatment apparatus according to any one of claims 1 to 6, wherein the apparatus can be used.   The tubular film inner peripheral surface processing apparatus according to claim 7, wherein the tapered surface of the second convex portion and the tapered surface of the support member are parallel to each other. A first guide rail installed on a side opposite to the side on which the first convex portion of the first pedestal is installed;
A first moving member that is movable along the first guide rail installed on the first guide rail,
The rod-shaped electrode is fixed to the first moving member,
The tubular film inner peripheral surface processing apparatus according to any one of claims 1 to 8, wherein the rod-like electrode moves forward or backward as the first moving member moves.   A stopper capable of preventing the movement of the first moving member is installed on the first guide rail, and the taper of the rod-shaped electrode is at a position where the movement of the first moving member is blocked by the stopper. The tubular film inner peripheral surface processing apparatus according to claim 9, wherein the surface and the tapered surface of the first convex portion are arranged linearly. A second guide rail installed in parallel with the first guide rail at a predetermined interval;
A second moving member fixed to the first guide rail,
The second moving member is installed on the second guide rail so as to be movable along the second guide rail;
The tubular film inner peripheral surface processing apparatus according to claim 9 or 10, wherein the first guide rail moves along the second guide rail as the second moving member moves. A gas outlet installed in the first moving member;
A telescopic gas exhaust pipe installed between the first moving member and the first pedestal,
The gas exhaust pipe surrounds at least a part of the rod-like electrode inserted through the through hole of the first convex portion;
A gap is provided between the outer peripheral surface of the rod-shaped electrode and the inner peripheral surface of the first convex portion,
The tubular film inner peripheral surface treatment device according to any one of claims 9 to 11, wherein the gas that has passed through the gap can be discharged from the gas discharge port through the inside of the gas exhaust pipe. .   The tube according to any one of claims 1 to 12, further comprising: a container for containing the conductive liquid; and a ground electrode for grounding by being immersed in the conductive liquid. -Like film inner peripheral surface processing equipment.   14. The gas jet device according to claim 1, further comprising a gas jetting device capable of blowing a removal gas for removing the conductive liquid attached to the outer peripheral surface of the tubular film after the inner peripheral surface treatment of the tubular film. The tubular film internal peripheral surface processing apparatus of description. A method for processing an inner peripheral surface of a tubular film using the tubular film inner peripheral surface processing apparatus according to any one of claims 1 to 14,
Fitting the end portions of the tubular film into the first convex portions and the second convex portions,
Inserting the rod-shaped electrode into the space surrounded by the inner peripheral surface of the tubular film by advancing the rod-shaped electrode toward the second convex portion through the through hole of the first convex portion; and
Treating the inner peripheral surface of the tubular film with plasma generated by immersing the tubular film in the conductive liquid and generating between the rod-shaped electrode and the conductive liquid;
A step of pulling up the tubular film from the conductive liquid;
And a step of retracting the rod-shaped electrode and pulling out the rod-shaped electrode from the space surrounded by the inner circumferential surface of the tubular film.   The tubular film inner peripheral surface treatment method according to claim 15, comprising a step of reducing twisting generated in the tubular film by rotating the second convex portion.   After the tubular film is pulled out of the conductive liquid, an expansion gas is introduced between the outer peripheral surface of the rod-shaped electrode and the inner peripheral surface of the tubular film, and comes into contact with the inner peripheral surface of the tubular film. The tube-shaped film inner peripheral surface treatment method according to claim 15 or 16, wherein the rod-shaped electrode is pulled out without causing the rod-shaped electrode to be pulled out.   The inside of the tubular film according to any one of claims 15 to 17, comprising a step of removing the conductive liquid adhering to an outer peripheral surface of the tubular film when the tubular film is pulled out of the conductive liquid. Surface treatment method.

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