JP3816236B2 - Laminator film guide device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a film guide device used for an automatic cut laminator. The auto-cut laminator sequentially laminates the film sheet from the tip portion to the substrate between a pair of pressure-bonding rolls while cutting the film web to form a film sheet having a predetermined length. The film guide device is disposed close to the pressure roll and guides the film sheet laminated on the substrate.
[0002]
[Prior art]
An auto-cut laminator as described above is disclosed in Japanese Patent Laid-Open No. 60-85927, for example, for laminating a film having a photosensitive material on one side to a printed circuit board. An outline of the configuration and operation will be described with reference to FIG. Japanese Laid-Open Patent Publication No. 60-85927 discloses a laminator that can laminate a film on both sides of a substrate. Here, a description will be given of a case where a film is laminated only on one side (upper surface) of a substrate.
[0003]
The auto-cut laminator includes a pair of temporary members 1, 1 ′, a pair of crimping rolls 2, a film cutter 3, a cutter backup 4, a film guide 5, and the like. On the upper side, a film 6 having a photosensitive material on one side (the surface laminated on the substrate) is provided in the form of a film roll (not shown). The tack members 1, 1 ′, the pressure roll 2, the cutter backup 4, and the film guide 5 have a width that exceeds the width of the film 6. Each of the tacking member 1, the 1 ′ cutter backup 4, and the film guide 5 has a plurality of suction holes on the surface in contact with the film 6. The film 6 can be adsorbed by performing a suction action through the suction holes, or the film 6 can be prevented from being sucked without performing the suction action. The film cutter 3 has a rotating round blade, and waits at a position outside the width direction of the cutter backup 4 when not operating. When the film 6 is cut, the film cutter 3 can move in the width direction of the cutter backup 4 while rotating the round blade.
[0004]
When laminating the film 6 on the substrate 7, first, the front end portion of the film 6 drawn out from the film roll is brought close to the front end of the substrate 7 while being sucked and held by the upper tacking member 1 by the suction action. . The upper tacking member 1 presses the tip of the film 6 against the front end of the substrate 7 in a joint operation with the lower tacking member 1 ′ (FIG. 5 (1)).
[0005]
When the tacking operation is completed, the tacking member 1 stops the suction action and moves away from the substrate 7. The substrate 7 to which the leading end portion of the film 6 is temporarily attached is fed toward the nip portion 8 between the pair of press rolls 2 by a transport device (not shown) such as a roller conveyor. As the pair of press rolls 2 rotate, the substrate 7 is fed to the left in the figure while the films 6 are sequentially laminated from the front end (FIG. 5 (2)). At this time, the tack member 1 and the film guide 5 guide the film 6 while giving a suction action to the film 6 or without giving a suction action. During the laminating operation, the tacking member 1, the film cutter 3 and the cutter backup 4 move in the same direction as the film 6 at a speed substantially equal to the traveling speed of the film 6. Thus, by moving the film cutter 3 in the width direction of the cutter backup 4 in a state where the relative speed between the film 6 and the film cutter 3 is zero along the moving direction of the film 6, the film 6 is cut horizontally to form a film sheet 6 ′ having a length adapted to the size of the substrate 7.
[0006]
The film sheet 6 ′ having a predetermined length is laminated on the substrate 7 while the rear end portion is adsorbed and guided by the film guide 5. From the beginning to the end of the laminating operation, the pressure roll 2 uniformly laminates the film on the substrate 7 without interrupting the rotation.
[0007]
In such a type of laminator, it is important to handle the rear end portion of the film sheet 6 ′ after being cut. Since the film before cutting is in the state of a continuous web drawn out from the film roll, it can be neatly laminated on the substrate while applying an appropriate tension with a tension roll or the like. However, after the film is cut, it must be guided while being adsorbed by the suction action of the film guide 5 as described above so that the rear end portion of the film sheet 6 ′ does not become a free end portion. If the rear end of the film sheet is left in a free state, the rear end of the film hangs down on the substrate, and wrinkles and bubbles are generated during lamination.
[0008]
In FIG. 6, the expanded sectional view of the film guide 5 used conventionally is shown with the crimping | compression-bonding roll 2 (a lower crimping | rolling roll is not shown in figure). The conventional film guide 5 has a plurality of suction holes 9 on the film contact surface that contacts the film sheet 6 '. The suction hole 9 communicates with an internal suction chamber 10. The suction chamber 10 is connected to a suction source such as a vacuum pump 12 via a pipe line 11. An open / close valve 13 is provided in the pipeline 11.
[0009]
As shown in FIG. 5 (3), the rear end of the film sheet 6 ′, which has been cut when the cutter backup 4 approaches the film guide 5, immediately moves from the cutter backup 4 to the film guide 5. As shown in FIG. 6, the entire film contact surface is subjected to a suction action. At this time, since the rear end portion of the film sheet 6 ′ covers almost all of the suction holes 9, a sufficient adsorption force acts on the rear end portion of the film to prevent dropping on the substrate 7. ing. In addition, when a sufficient adsorbing force acts on the rear end portion of the film in this manner, an appropriate tension is applied to the film portion between the nip portion of the pressure-bonding roll 2 and the front end portion of the film guide 5, and the film sheet 6 ' Can be laminated on the substrate 7 without wrinkles.
[0010]
However, as the laminating operation progresses and the edge of the rear end of the film sheet moves on the film contact surface of the film guide 5, the number of suction holes 9 that are not covered by the film sheet 6 ′ gradually increases. Then, the suction action gradually weakens. As a result, it is possible to completely eliminate the possibility that wrinkles and air bubbles will be formed during lamination by the film trailing edge falling on the substrate 7 immediately before the lamination is completed or the film tension sharply decreasing. There wasn't.
[0011]
[Problems to be solved by the invention]
Therefore, the problem to be solved by the present invention is to further reduce the possibility of dropping of the rear end portion of the film sheet immediately before the completion of lamination and the sudden decrease in film tension, thereby further improving the reliability of the laminating operation.
[0012]
[Means for Solving the Problems]
The basic idea of the present invention for solving the above problems is that a suction action is performed for each of a plurality of sections along the direction of travel on the rear end of the film sheet traveling on the film contact surface of the film guide. By doing so, an effective adsorption force is given to the rear end of the film until just before the completion of lamination.
[0013]
According to the present invention, it is used in a laminator for laminating a film sheet on a substrate between a pair of crimping rolls while cutting a film web to form a film sheet of a predetermined length, in proximity to the crimping rolls. A film guide device disposed, comprising a film guide body, the film guide body being in contact with the film sheet, a plurality of suction holes provided in the film contact face, and communicating with the suction holes An internal suction chamber that is configured to guide the film sheet between the pair of pressure-bonding rolls while adsorbing the film sheet on the film contact surface by the suction action of the suction chamber.
The suction chamber is divided into a plurality of suction compartments independent of each other;
The film contact surface is divided into a plurality of sections along the traveling direction of the film sheet,
The suction holes belonging to each of the plurality of sections communicate with the plurality of suction compartments, respectively.
A film guide device is provided.
[0014]
Each of the plurality of suction compartments may be capable of performing a suction action independently of each other.
[0015]
Each of the plurality of suction compartments is connected to a common suction source via a separate conduit having an on-off valve, and when the rear edge of the film sheet passes through the section, the suction holes belonging to the section The on-off valve of the pipe line related to the above may be sequentially closed.
[0016]
The opening / closing operation of the opening / closing valve can be controlled by the film feed length or the elapsed time after the film web is cut into a film sheet having a predetermined length.
[0017]
The film guide body has a roll facing surface that is close to and faces the peripheral surface of the pressure-bonding roll, and negative pressure is applied to a gap space formed between the roll-facing surface and the peripheral surface of the pressure-bonding roll. It is preferable to provide a suction hole for generating the above-mentioned surface on the roll facing surface.
[0018]
The suction hole provided in the roll facing surface can be communicated with a suction compartment that communicates with a suction hole belonging to a section closest to the press roll among the plurality of sections of the film contact surface.
[0019]
An elongate tape member disposed between the distal end portion of the film guide body and the peripheral surface of the crimping roll and extending in the axial direction of the crimping roll, with one side edge portion at the distal end portion of the film guide body A tape member that is in contact with each other or with a slight gap and is positioned so that the other side edge is located near the nip between the pair of pressure-bonding rolls to extend the film contact surface. May be further provided.
[0020]
A suction hole communicating with the gap space formed between the roll facing surface of the film guide main body and the peripheral surface of the pressure-bonding roll may be formed in the tape member.
[0021]
The tape member may be tensioned along its longitudinal direction to maintain straightness.
[0022]
Instead of providing the tape member, it is a thin lip portion that extends along the axial direction of the pressure-bonding roll at the front end portion of the film guide main body, and the pair of pressure-bonding rolls from the front end portion of the film guide main body. You may make it provide the lip | rip part made | formed as it protruded toward the nip part and the said film contact surface was extended.
[0023]
The lip portion is formed from an elongated sheet member extending in the axial direction of the crimping roll, and one side portion of the sheet member is attached to the distal end portion of the film guide body, and the opposite side portion is the pair of crimping rolls. You may make it point to the nip part.
[0024]
You may make it form the suction hole connected to the said clearance gap formed between the said roll opposing surface of the said film guide main body, and the said surrounding surface of the said press roll in the said lip | rip part.
[0025]
A cover member for covering at least a part of the periphery of the gap space may be attached to the film guide body.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a side sectional view of an embodiment of a film guide apparatus according to the present invention together with an upper pressure-bonding roll. The lower pressing roll is not shown. The film guide apparatus of the present invention includes a film guide body 14. The film guide body 14 has a film contact surface that contacts and guides the film sheet 6 ′, and a plurality of suction holes 15 are provided in the film contact surface. As is clear from the difference between the conventional film guide shown in FIG. 6, the suction chamber inside the film guide body 14 in the present invention has an independent front and a front along the traveling direction of the film sheet 6 ′. It is divided into two rear suction compartments 16 and 17. The plurality of suction holes 15 on the film contact surface communicate with any one of the front and rear suction compartments 16 and 17. Therefore, the film contact surface of the film guide body 14 is divided into two sections (a front section closer to the press roll 2 and a rear section far from the press roll 2) along the traveling direction of the film sheet. Can be considered to communicate with the front and rear suction compartments 16 and 17, respectively.
[0027]
The two suction compartments 16, 17 are connected to a common vacuum pump 22, that is, a suction source via individual pipe lines 20, 21 having open / close valves 18, 19. By operating the on-off valves 18 and 19, the suction action by the suction compartments 16 and 17 can be controlled independently of each other. The suction compartments 16 and 17 may be connected to individual suction sources to control the suction action. Further, the suction chamber may be divided into three or more suction compartments along the traveling direction of the film sheet 6 ′. In this case, the film contact surface will also be divided into the same number of sections.
[0028]
By dividing the suction chamber in the film guide body 14 into two front and rear suction compartments 16 and 17 which are independent from each other, the film guide body 14 has a film sheet rear end at the front section of the film contact surface. Even when it comes into contact with only the film sheet, an effective adsorption force can be applied to the rear end of the film sheet. As shown in FIG. 1 and FIG. 2 (1), when the rear end of the film sheet covers almost all of the suction holes 15, the rear end of the film sheet is It is guided on the film contact surface while being reliably adsorbed. When the laminating operation proceeds and the trailing edge of the film sheet 6 ′ passes through the rear section on the film contact surface (see FIG. 2 (2)), the rear suction compartment 17 corresponding to the rear section is located on the rear side of the film sheet. An effective suction action can no longer be applied to the end. However, the suction action by the front suction compartment 16 still works effectively and continues to adsorb the trailing edge of the film sheet onto the front section of the film contact surface.
[0029]
In particular, as in the illustrated embodiment, when the two suction compartments 16 and 17 utilize a vacuum pump 22 that is a common suction source, after the trailing edge of the film sheet 6 'passes through the rear section. It is desirable to close the on-off valve 19 so as not to reduce the suction force by the front suction compartment 16. Even when the suction chamber is divided into three or more suction compartments, each time the trailing edge of the film sheet 6 'passes through each section on the film contact surface, it communicates with the suction hole 15 belonging to that section. It is desirable to be able to control the opening and closing valves of the pipe line related to the suction compartment to be sequentially closed.
[0030]
The timing of closing the on-off valve associated with a specific section on the film contact surface through which the trailing edge of the film sheet 6 ′ has passed is such that the film cutter 3 (see FIG. 5) is arranged so that the film web becomes a predetermined length of the film sheet 6 ′. ) Can be controlled by the film feed length or elapsed time from the point of cutting. The film feed length can be known by the rotation of the press roll 2.
[0031]
In the embodiment shown in FIG. 1, the film guide main body 14 has a roll facing surface 23 that is close to and faces the circumferential surface of the pressure-bonding roll 2. A narrow gap space 24 is formed between them. A plurality of suction holes 25 are provided in the roll facing surface 24, and the suction holes 25 communicate the gap space 24 with the front suction compartment 16. A cover member 26 for covering the upper portion of the gap space 24 is attached to the upper surface of the film guide body 14. Although not shown, a cover member for covering the side portion of the gap space 24 may be attached to the side surface of the film guide main body 14 in the same manner. These cover members can be made of, for example, a plastic sheet.
[0032]
Thus, by providing the suction hole 25 capable of generating a negative pressure in the gap space 24, a suction force is applied to the film sheet portion between the tip portion 27 of the film guide body 14 and the nip portion of the pressure-bonding roll 2. Can act. As a result, as shown in FIG. 2 (3), when the laminating operation comes to the end, the rear end of the film sheet comes off from most of the suction holes 15 in the front section of the film contact surface, or these suctions are performed. Even when all the holes 15 are removed and the front section is about to pass, the rear end portion of the film sheet receives an effective suction force from the front suction compartment 16 through the suction holes 25 and onto the substrate 7. The fall prevention is sure. The above-described cover member 26 and the side cover member of the gap space 24 can prevent the loss of the suction force.
[0033]
The suction hole 25 is connected to another suction pipe instead of communicating with the front suction compartment 16 so that the suction action in the gap space 24 is performed independently of the suction action in the front suction compartment 16. May be.
[0034]
FIG. 3 shows another embodiment of the present invention. The film guide apparatus of this embodiment includes an elongated tape member 28 that is disposed between the distal end portion 27 of the film guide main body 14 shown in FIG. 1 and the peripheral surface of the pressure roll 2 and extends in the axial direction of the pressure roll 2. . In the tape member 28, one side edge portion 29 is adjacent to the front end portion 27 of the film guide main body 14 with a slight gap 30, and the other side edge portion 31 is positioned near the nip portion of the pressure-bonding roll 2. It is positioned to become. The tape member 28 is stretched between a pair of bars 34 attached to both sides of the film guide main body 14 with screws 33 via brackets 32. Pins 35 projecting in the lateral direction are provided at the front end portions of the respective bars 34, while holes are provided at both end portions of the tape member 28. By passing the pin 35 through the hole and turning the bar 34 as shown by the arrow in FIG. 3 (3), the tape member 28 is tensioned along the longitudinal direction. If the bar 33 is fixed by tightening the screw 33 in this state, the tape member 28 can maintain straightness while being applied with tension.
[0035]
The role of the tape member 28 is to extend the film contact surface of the film guide body 14 to the nip portion side of the pressure-bonding roll 2. It is desirable that the front end portion 27 of the film guide body 14 is as close as possible to the nip portion of the pressure-bonding roll 2 so that the rear end portion of the film sheet can be guided while being sucked to the end. However, the closer to the nip portion, the narrower the gap between the pressure-bonding roll 2 and the substrate 7, so that it is impossible to bring the thick film guide body 14 closer to the nip portion. On the other hand, it is difficult to process the film guide main body 14 so as to make the distal end portion 27 thinner and to form a suction hole communicating with the suction section chamber inside.
[0036]
On the other hand, since the tape member 28 is thin, it can be arranged in a narrow gap between the pressure-bonding roll 2 and the substrate 7. Further, a slight gap 30 between one side edge portion 29 of the tape member 28 and the tip end portion 27 of the film guide main body 14, and the other side edge portion 31 of the tape member 28 and the nip portion of the pressure-bonding roll 2. In the gap, the suction force through the suction hole 25 (see FIG. 1) formed in the roll facing surface 23 of the film guide body 14 effectively acts on the film sheet. Therefore, it can be said that the tape member 28 extends the film contact surface that contacts and adsorbs and guides the film sheet.
[0037]
As shown in FIG. 3 (1), a plurality of suction holes 36 may be provided in the tape member 28. The suction hole 36 communicates with the gap space 24 (see FIG. 1) between the roll facing surface 23 of the film guide main body 14 and the peripheral surface of the pressure-bonding roll 2, similarly to the gap 30. The suction force can be applied to the film sheet.
[0038]
FIG. 4 shows still another embodiment of the present invention. The film guide apparatus of this embodiment includes a thin lip portion 37 that extends along the axial direction of the pressure-bonding roll 2 at the distal end portion 27 of the film guide main body 14 shown in FIG. The lip portion 37 protrudes from the distal end portion 27 of the film guide main body 14 toward the nip portion of the press roll 2. In the illustrated embodiment, the lip portion 37 is formed from an elongated sheet member (for example, made of plastic or metal) extending in the axial direction of the pressure-bonding roll 2. The sheet member is bent along a longitudinal line, and one side portion 38 is attached to the upper surface of the distal end portion 27 of the film guide main body 14 by a screw 39. The other side portion 40 of the sheet member is directed to the nip portion of the pressure-bonding roll 2.
[0039]
The role of the lip portion 37 is to extend the film contact surface of the film guide main body 14 to the nip portion side of the pressure-bonding roll 2, similarly to the tape member 28.
[0040]
The lip portion 37 made of a thin sheet member can be positioned in a narrow gap between the pressure-bonding roll 2 and the substrate 7. Since the lip portion 37 is disposed close to the nip portion of the pressure-bonding roll 2, it can contact the rear end portion of the film sheet to the end and stably guide it. Further, in the gap between the edge of the side portion 40 and the nip portion of the press roll 2, the suction force through the suction hole 25 (see FIG. 1) described above effectively acts on the film sheet. In the case of this embodiment, in order to make the suction force acting on the film sheet more effective, it is desirable to provide a plurality of suction holes 41 in the side portion 40 as shown in FIG. The suction hole 41 communicates with the gap space 24 (see FIG. 1), and by applying a suction force to the film sheet through the suction hole 25, the suction and holding of the rear end portion of the film sheet is ensured.
[0041]
In the embodiment of FIG. 3, the tape member 28 is arranged so that one side edge 29 of the tape member 28 is adjacent to the tip end portion 27 of the film guide body 14 with a slight gap 30. However, as another example, the tape member 28 may be arranged so that the one side edge 29 comes into contact with the tip 27 of the film guide body 14. In this case, the tape member 28 operates in the same manner as the lip portion 37 in the embodiment of FIG.
[0042]
【The invention's effect】
According to the film guide device of the present invention, since the effective suction force can be given to the rear end of the film sheet to the end as compared with the conventional film guide having a single suction chamber, The possibility of falling edges and a sudden drop in film tension is significantly reduced, further increasing the reliability of the laminating operation.
[Brief description of the drawings]
FIG. 1 is a side sectional view of an embodiment of a film guide apparatus according to the present invention, together with an upper pressing roll, and the lower pressing roll is not shown.
2 is a side cross-sectional view showing steps of (1) to (3) in a state where the film rear end portion is sucked and held by the film guide apparatus of the embodiment of FIG. 1;
3 is a view showing another embodiment of the film guide apparatus according to the present invention, (1) is a plan view, (2) is a fragmentary schematic side view, and (3) is a tape member used in this embodiment. FIG. Front view.
4A and 4B are views showing still another embodiment of the film guide apparatus according to the present invention, in which FIG. 4A is a plan view and FIG. 4B is a fragmentary schematic side view.
FIG. 5 is a side view showing in stages from (1) to (3) how a film is laminated on a substrate by an auto-cut laminator using a conventional film guide.
FIG. 6 is a view showing a side sectional view of a conventional film guide together with an upper pressing roll, and a lower pressing roll is not shown.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Temporary block, 2 Crimp roll, 3 Film cutter, 4 Cutter backup, 5 Film guide, 6 Film, 6 'Film sheet, 7 Substrate, 8 Nip part, 9 Suction hole of film contact surface, 10 Suction chamber, 11 tube Path, 12 vacuum pump (suction source), 13 on-off valve, 14 film guide body, 15 suction hole on the film contact surface, 16 front suction compartment, 17 rear suction compartment, 18 on-off valve, 19 on-off valve, 20 Pipe line, 21 Pipe line, 22 Vacuum pump (suction source), 23 Roll facing surface, 24 Gap space, 25 Roll suction surface suction hole, 26 Cover member, 27 Film guide body tip, 28 Tape member, 29 Tape One side edge of the member, 30 gap, 31 The other side edge of the tape member, 32 Bracket, 33 Screw, 34 Bar, 35 Pin, 36 Te Suction hole provided in the lip member, 37 lip portion, 38 One side portion of the sheet member forming the lip portion, 39 Screw, 40 The other side (opposite side) side portion of the sheet member forming the lip portion, 41 lip portion The suction hole provided in the.

Claims (13)

A film guide device used in a laminator for laminating a film sheet on a substrate between a pair of crimping rolls while forming a film sheet of a predetermined length by cutting the film web, and disposed in the vicinity of the crimping rolls A film guide body, the film guide body being in contact with the film sheet, a plurality of suction holes provided in the film contact face, and an internal suction chamber communicating with the suction holes; In the film guide device, the film sheet is guided between the pair of pressure-bonding rolls while adsorbing the film sheet on the film contact surface by the suction action of the suction chamber.
The suction chamber is divided into a plurality of suction compartments independent of each other;
The film contact surface is divided into a plurality of sections along the traveling direction of the film sheet,
The suction holes belonging to each of the plurality of sections communicate with the plurality of suction compartments, respectively.
A film guide device. The film guide device according to claim 1,
A film guide apparatus, wherein each of the plurality of suction compartments can perform a suction action independently of each other. The film guide apparatus according to claim 1 or 2,
Each of the plurality of suction compartments is connected to a common suction source via an individual conduit having an on-off valve, and when the rear edge of the film sheet passes through the section, the suction holes belonging to the section are connected to the suction hole. The film guide device, wherein the on-off valves of the related pipe lines are sequentially closed. In the film guide apparatus of Claim 3,
The opening / closing operation of the opening / closing valve is controlled by the film feed length or the elapsed time after the film web is cut into a film sheet having a predetermined length. apparatus. In the film guide apparatus in any one of Claims 1 thru | or 4,
The film guide body has a roll facing surface that is close to and faces the peripheral surface of the pressure-bonding roll, and is negative in a gap space formed between the roll-facing surface and the peripheral surface of the pressure-bonding roll. A film guide device, wherein a suction hole for generating pressure is provided in the roll facing surface. The film guide apparatus according to claim 5,
The suction hole provided in the roll facing surface communicates with a suction compartment that communicates with a suction hole belonging to a section closest to the pressure-bonding roll among the plurality of sections of the film contact surface. A film guide device. In the film guide apparatus according to claim 5 or 6,
An elongate tape member disposed between the distal end portion of the film guide body and the peripheral surface of the crimping roll and extending in the axial direction of the crimping roll, with one side edge portion at the distal end portion of the film guide body A tape member that is in contact with each other or with a slight gap and is positioned so that the other side edge is located near the nip between the pair of pressure-bonding rolls to extend the film contact surface. The film guide apparatus further comprising: In the film guide apparatus according to claim 7,
A film guide device, wherein a suction hole communicating with the gap space formed between the roll-opposing surface of the film guide body and the peripheral surface of the pressure-bonding roll is formed in the tape member. . The film guide apparatus according to claim 7 or 8,
A film guide device characterized in that the tape member is kept straight by being tensioned along its longitudinal direction. The film guide device according to claim 5 or 6, wherein the film guide body is a thin lip portion extending along the axial direction of the pressure-bonding roll at a tip portion of the film guide body, A film guide device, characterized in that a lip portion is provided which protrudes toward the nip portion of a pair of pressure-bonding rolls and extends the film contact surface. The film guide apparatus according to claim 10, wherein
The lip portion is formed from an elongated sheet member extending in the axial direction of the pressure-bonding roll, and one side portion of the sheet member is attached to the distal end portion of the film guide body, and the opposite side portion is A film guide device, which is directed to a nip portion of the pair of pressure-bonding rolls. The film guide apparatus according to claim 10 or 11,
A film guide device, wherein a suction hole communicating with the gap space formed between the roll-facing surface of the film guide body and the peripheral surface of the pressure-bonding roll is formed in the lip portion. . The film guide apparatus according to any one of claims 5 to 12,
A film guide device, wherein a cover member for covering at least a part of the periphery of the gap space is attached to the film guide body.

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