JP5188265B2 - Hydraulic transfer device - Google Patents

Description

  The present invention relates to a hydraulic transfer apparatus that decorates the surface of a substrate to be transferred by hydraulic transfer.

  In automobile interior parts (for example, steering wheels), products in which decoration is applied to the surface by water pressure transfer in order to enhance designability and quality have been put into practical use (for example, see Patent Document 1). Here, hydraulic transfer is a technique in which a water-swellable film is floated on the surface of the water, and a predetermined pattern printed on the film (pattern such as wood grain pattern or geometric pattern) is transferred to the surface of the molded body by water pressure. It is said that printing on a three-dimensional curved surface can be performed relatively accurately and easily.

  In a conventional general hydraulic transfer device, a transfer film is fed from a film feed roll of a film supply device, and the transfer film is floated on the water surface of a transfer tank and sent out. A flow at a constant flow rate is formed in the water in the transfer tank, and the transfer film is placed on the flow and transferred, and the transfer film is expanded. In addition, a molded body such as a steering wheel is conveyed and is in an upright or slanted state so that its lower end side is submerged. Then, by rotating the molded body along the pattern of the transfer film, the pattern can be transferred in the circumferential direction of the molded body.

By the way, the transfer film is swollen with an activator and is in a state in which wrinkles are likely to be shifted. In addition, if the flow rate of water in the transfer tank is not constant, the transfer liquid landing position varies and meanders. Therefore, in this case, the transfer film cannot be reliably transferred to the guide chain located on the downstream side in the transfer tank, and the water pressure transfer to the molded body cannot be reliably performed. Therefore, it becomes difficult to obtain a good transfer body excellent in design. Therefore, there has been conventionally proposed a mechanism provided with a mechanism for stabilizing the landing position by preventing variation in the landing position of the transfer film. For example, in the apparatus of Patent Document 1, a blowing body is disposed obliquely above a supply weir provided on the upstream side of the transfer tank, and wind is blown from the blowing body to the transfer film, so that the supply weir and the water surface The transfer film is stably deposited near the contact area.
Japanese Patent No. 3225282 (FIG. 2)

  However, since the liquid landing position stabilization mechanism in the above-described conventional apparatus utilizes wind (air), it has the following drawbacks.

  That is, if air is blown onto the transfer film swollen by the activator, the activator evaporates and the transfer film dries, which may adversely affect transferability. Further, if the transfer film is not sprayed with a uniform air volume, the transfer film may flutter, and the liquid landing position may become unstable. Further, if dust is contained in the blowing air, the dust adheres to the transfer film. In this case, the yield rate of the transfer body is reduced. Accordingly, there have been many requests for a landing position stabilization mechanism that does not use wind.

  The present invention has been made in view of the above problems, and its purpose is to prevent meandering when the film is applied and to reliably transfer the transfer film to the guide means in the liquid tank. An object of the present invention is to provide a hydraulic transfer device that can reliably perform hydraulic transfer to a material.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a liquid tank for storing and expanding a swellable transfer film is stored, and the transfer film is placed in the liquid in the liquid tank. A liquid flow generating means for generating a liquid flow from the receiving side for receiving the transfer film to the discharge side for discharging the transfer film, and disposed above the receiving side of the liquid tank, and the transfer film is suspended on the receiving side of the liquid tank. And a guiding means for guiding the transfer film along the direction of the liquid flow while restricting expansion in the width direction of the transferred transfer film, and transferring the transfer film by the action of hydraulic pressure. In an apparatus for transferring a part of a film to the surface of a substrate to be transferred, the liquid is disposed on the receiving side of the liquid tank and below the transfer film sending means so that the liquid flows down along the side wall surface. Provided with a weir for the flow of the liquid at all times, with a film submerged preventing member toward the discharge side projects so as to have the same height as the horizontally and the liquid surface from the side wall surface of the weir of the transfer film, the film the back side of the transfer film coming suspended from the delivery means, the liquid pressure UtsushiSo location, characterized by being configured so as to Chakueki and sucked on the side wall surface of the weir under the action of surface tension of the liquid The gist.

Therefore, according to the first aspect of the present invention, when the liquid is constantly flowing from the weir arranged on the receiving side of the liquid tank and below the film delivery means, the liquid flows down along the side wall surface of the weir. At this time, due to the action of the surface tension of the liquid, the back side of the transfer film that hangs down from the film delivery means is sucked into the side wall surface of the weir and landed. Therefore, since the transfer film comes into surface contact with the side wall surface where the liquid flows and is guided to the lower side while following the liquid in this state, the liquid can be stabilized. Also, with this method, the transfer film can be deposited at a relatively short distance after being sent out from the film sending means. Therefore, meandering of the transfer film can be relaxed, and the transfer film can be reliably transferred to the guide means. Further, since this device stabilizes the landing position by utilizing the action of the surface tension of the liquid, it is possible to eliminate various drawbacks in the prior art that uses the wind to stabilize the landing position. I can .
In addition, as a result of including a film submergence prevention body that protrudes horizontally from the side wall surface of the weir toward the discharge side of the transfer film and has the same height as the liquid surface, the film submerged along the side wall surface of the weir. Since the guided transfer film is guided by the film submergence prevention body and proceeds in a direction parallel to the water surface, the transfer film can be prevented from being submerged. Moreover, the thrust in the horizontal direction can be given to the transfer film by the film submergence prevention body. In this case, the height of the upper end surface (film guide surface) of the film submergence prevention body is preferably set to be substantially equal to the height of the water surface.

  According to a second aspect of the present invention, in the first aspect, the position adjustment is arranged between the film delivery means and the weir, and the entire surface comes into contact with the back side of the transfer film before liquid landing. The gist is that a film tension applying member for applying tension is further provided.

  Therefore, according to the second aspect of the present invention, the film tension applying member contacts the back side of the transfer film to apply the entire tension, thereby preventing the transfer film from undulating before the liquid landing. It is possible to prevent the entrapment of the resulting foam. In addition, since the film tension imparting member is in contact with the back side of the transfer film on the non-transfer side, the design of the pattern on the transfer side is hardly affected. In addition, by adjusting the position of the film tension applying member, it is possible to set a tension suitable for preventing waviness.

The invention according to claim 3 is that, in claim 1 or 2 , the difference between the upper end height of the weir and the liquid level of the liquid before passing the weir is set to 3 mm or more and 7 mm or less. The gist.

Therefore, according to the third aspect of the present invention, the difference in height between the two is within a preferred range, so that the landing liquid can be reliably stabilized while avoiding problems such as foaming of the liquid. By the way, when the height difference between the two is less than 3 mm, the amount of liquid flowing down the weir decreases, and the thickness of the liquid film covering the side wall of the weir becomes too thin, which may increase the resistance. Therefore, in this case, the transfer film cannot be guided downward by following the liquid, and the landing liquid cannot be sufficiently stabilized. On the other hand, if it exceeds 7 mm, the amount of liquid flowing down the weir increases, the thickness of the liquid film becomes too thick, and the liquid may foam at the dropping point, which is not preferable. In addition, the flow rate of the liquid becomes too fast, leading to foaming of the liquid surface, and the guiding means may be submerged.

As described in detail above, according to the inventions described in claims 1 to 3 , the transfer film can be reliably delivered to the guide means in the liquid tank by preventing meandering when the film is applied. It is possible to provide a hydraulic transfer apparatus that can reliably perform hydraulic transfer to a material.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a hydraulic transfer device 1 (hydraulic transfer device) in the present embodiment.

  As shown in FIG. 1, the hydraulic transfer device 1 is a device for performing hydraulic transfer printing on a steering wheel 3 (transfer target substrate) using a transfer film 2 having swelling properties. This hydraulic transfer device 1 includes a transfer tank 5 (liquid tank) for storing water W1 (liquid), a film feeding device (not shown), and a dipping device 21 for pushing the steering wheel 3 into the water from above the transfer film 2. With. The dipping device 21 used in the present embodiment rotates the endless belt 7 with a plurality of rollers 22, and supports the steering wheel 3 on the support body 25 provided on the belt 7 with the water W1. It is designed to be immersed in.

  The transfer tank 5 is divided into a main tank 11, a receiving side auxiliary tank 12 positioned on the front side of the main tank 11, and a discharge side auxiliary tank 13 positioned on the rear side of the main tank 11. A recovery pipe 17 is connected to the discharge side sub-tank 13, and the recovery pipe 17 is connected to the pump 15 via the filter 14. Further, the pump 15 is connected to the receiving side auxiliary tank 12 via the supply pipe 16. Therefore, when the pump 15 is driven, the water W1 in the main tank 11 leaks into the discharge side auxiliary tank 13, and the water W1 recovered through the recovery pipe 17 is filtered by the filter 14, and then again. It is configured to be pressure-fed and supplied into the receiving side auxiliary tank 12. Thus, the transfer tank 5 of this embodiment is a water tank in which the water W1 circulates, and the surface flow (liquid) from the receiving side 5a that receives the transfer film 2 to the discharge side 5b that discharges the transfer film 2. Flow) occurs on the water surface of the main tank 11. In the present embodiment, the recovery pipe 17, the pump 15, and the supply pipe 16 constitute a liquid flow generating means.

  In the present embodiment, the transfer film 2 having a width of about 20 cm to 50 cm is continuously fed out from a film feeding device (not shown) in the previous stage of the hydraulic transfer device 1. This transfer film 2 is produced by gravure printing a printed pattern layer on a water-soluble or water-swellable substrate, and an activator is applied to the printed surface side. In addition, as a formation method of the printing pattern layer in the transfer film 2, well-known printing methods, such as screen printing, can be used besides gravure printing. A part of the transfer film 2 (printed pattern layer) is transferred onto the surface of the steering wheel 3 by hydraulic transfer to decorate the surface. Examples of such a printed pattern layer include a wood grain pattern and a geometric pattern.

  The base material of the transfer film 2 absorbs water by floating on the water surface and dissolves or swells, and when the steering wheel 3 is pushed in from above, it easily extends and deforms along the shape of the steering wheel 3 Have Specific examples of this base material include polyvinyl alcohol resin (PVA), dextrin, gelatin, glue, casein, shellac, gum arabic, starch, protein, polyacrylic amide, polyacrylic acid soda, polyvinyl methyl ether, methyl Copolymers of vinyl ether and maleic anhydride, copolymers of vinyl acetate and itaconic acid, polyvinylpyrrolidone, or cellulose derivatives such as cellulose, acetylcellulose, acetylbutylcellulose, carboxymethylcellulose, methylcellulose, hydroxyethylcellulose, soda alginate alone Alternatively, a water-soluble or water-swellable film such as a mixed resin is used.

  Resin for binder made of thermoplastic urethane resin such as polyester urethane, acrylic urethane, polycarbonate urethane, and acrylic resin such as polymethyl methacrylate, polyethyl methacrylate, polybutyl methacrylate, etc. A printing ink containing is used.

  As shown in FIGS. 1 and 2, a feeding conveyor 31 as a film feeding means is disposed above the receiving side 5 a in the transfer tank 5. The feed conveyor 31 according to this embodiment includes rollers 32 provided at both ends of a pair of guide rails (not shown), and an endless belt 33 wound between the rollers 32. The feed conveyor 31 plays a role of feeding the transfer film 2 so as to hang down to the receiving side 5 a of the transfer tank 5.

  Further, guide means 45 is disposed in the main tank 11 of the transfer tank 5 so as to extend along the longitudinal direction thereof. The guide means 45 includes a pair of left and right guide chains 46 and a sprocket 47 for rotationally driving the guide chains 46. A part of the upper ends of these guide chains 46 are exposed from the water surface, and the transfer film 2 sent from the feed conveyor 31 and deposited thereon comes into contact with the side surfaces of the exposed portions of the respective guide chains 46. Further, the guide chain 46 is driven in the direction of the water flow in the main tank 11 at a speed similar to the flow speed. Thereby, the transfer film 2 is guided along the direction of the water flow while restricting the expansion of the transferred transfer film 2 in the width direction.

  Next, the hydraulic transfer device 1 according to the present embodiment includes a landing position stabilization mechanism that uses the surface tension of a liquid, not a landing position stabilization mechanism that uses wind. This will be described below.

  As shown in FIG. 2 and the like, in the transfer tank 5, the position where the main tank 11 and the receiving side auxiliary tank 12 are partitioned, in other words, the receiving side 5 a of the transfer tank 5 and the lower position of the feed conveyor 31 are perpendicular to each other. A weir 51 erected so as to extend in the direction is provided. The water W1 is constantly flowing so that the water W1 flows down along the side wall surface of the weir 51. The difference 55 between the upper end height of the weir 51 and the liquid level of the water W1 before crossing the weir 51 is desirably 3 mm or more and 7 mm or less, and is set to be about 5 mm in this embodiment.

  The height H1 of the weir 51 with respect to the water surface of the main tank 11 is arbitrary, but is preferably set to 20 mm or more and 60 mm or less (about 40 mm in the present embodiment). If this height is too low, even if the transfer film 2 is in surface contact, there is no effect or sufficient suction cannot be achieved. If it is too high, the liquid surface will be rippled and wrinkled, and air will easily enter the back side of the transfer film 2, causing quality degradation.

  A film tension applying roller 52 as a film tension applying member is disposed between the feed conveyor 31 and the weir 51. The film tension applying roller 52 extends horizontally along the apparatus width direction and is rotatably supported by a pair of support members (not shown). When the structure is rotatable like a roller, it is easy to reduce friction applied to the transfer film 2 when tension is applied. The film tension applying roller 52 is in contact with the back side of the transfer film 2 before the liquid is applied, and plays a role of applying overall tension. The attachment position of the film tension applying roller 52 with respect to the pair of support members can be changed to some extent, and therefore the position of the film tension applying roller 52 can be adjusted.

  On the side wall surface 51a of the weir 51, a film submergence prevention plate 53 having an inverted L-shaped cross section is provided. An upper end surface 53 a (film guide surface) of the film submergence prevention plate 53 protrudes horizontally from the side wall surface 51 a of the weir 51 toward the discharge side of the transfer film 2. Further, the height of the upper end surface 53a is set to be substantially equal to the height of the water surface. The film submergence prevention plate 53 plays a role of preventing the transfer film 2 from submerging and providing a driving force in the horizontal direction.

  Next, the operation of the hydraulic transfer device 1 of this embodiment will be described.

  First, the pump 15 is driven to circulate the water W1 in the transfer tank 5. Then, the water W1 that has reached the discharge-side subtank 13 is again pumped and supplied to the receiving-side subtank 12. The water W1 accumulated in the receiving side subtank 12 always flows over the upper end of the weir 51. The flowed water W <b> 1 flows down along the side wall surface 51 a of the weir 51, is constantly supplied to the main tank 11 side, and generates a surface flow for flowing the transfer film 2 on the water surface of the main tank 11. The guide means 45 is driven so as to have a speed comparable to the surface flow.

  The transfer film 2 continuously drawn out from the film feeding device is supplied onto the feed conveyor 31 after application of the activator. The feed conveyor 31 hangs the transfer film 2 down to the receiving side 5a of the transfer tank 5 by its own rotation and sends it out. Since the film tension applying roller 52 is disposed immediately below the feed conveyor 31, the film tension applying roller 52 contacts the back side of the transfer film 2 fed downward. Overall tension is applied. As a result, the undulation of the transfer film 2 before the landing of liquid is prevented, and foam encroachment due to the undulation is prevented.

  The transfer film 2 that has moved further downward after passing through the film tension applying roller 52 passes near the side wall surface 51a of the weir 51, but the side wall surface 51a is covered with the water W1 that flows down. Therefore, the surface tension of the water W1 acts at this time, the back side of the transfer film 2 is sucked toward the side wall surface 51a, and comes into surface contact with the liquid film. The transferred transfer film 2 is guided downward along the side wall surface 51a while following the water W1. The transfer film 2 that has reached the film submergence prevention plate 53 changes its traveling direction by 90 degrees due to contact with the upper end surface 53a, and proceeds in a direction parallel to the water surface. That is, it is possible to prevent the transfer film 2 from being submerged and to give the transfer film 2 a driving force in the horizontal direction.

  The transfer film 2 stably deposited as described above flows along the water flow along the water surface with almost no meandering, and is reliably delivered to the guide chain 46 of the guide means 45. The dipping device 21 presses the transfer film 2 while being guided by the guide chain 46 from above while rotating the steering wheel 3. As a result, water pressure acts and a part (printed pattern layer) of the transfer film 2 is transferred in the circumferential direction of the steering wheel 3. The steering wheel 3 that has been hydraulically transferred in this way is conveyed by a conveying means (not shown) and sent to a line for a post-process (such as a cleaning process or a drying process).

  Therefore, according to the present embodiment, the following effects can be obtained.

  (1) In this hydraulic transfer device 1, as described above, the liquid landing position is stabilized by sucking the back side of the transfer film 2 to the side wall surface 51a of the weir 51 by the action of the surface tension of the water W1. Yes. Accordingly, the meandering of the transfer film 2 at the time of landing can be alleviated, and the transfer film 2 can be reliably transferred to the guide means 45. In addition, since the hydraulic transfer device 1 is intended to stabilize the liquid landing position by using the surface tension of the water W1, various drawbacks in the prior art that use the wind to stabilize the liquid landing position. Can be eliminated.

  That is, since air is not blown onto the transfer film 2 swollen by the active agent, drying of the transfer film 2 due to evaporation of the active agent is avoided, and transferability is not adversely affected. In addition, the complexity of setting a uniform air volume in order to suppress flapping of the transfer film 2 is eliminated, and the risk of dust adhering to the transfer film 2 is reduced.

  As described above, according to the hydraulic transfer device 1 of the present embodiment, the hydraulic transfer can be reliably performed, and a good transfer body excellent in design can be obtained.

  (2) The hydraulic transfer device 1 includes the film tension applying roller 52 as described above. Therefore, the film tension applying roller 52 contacts the back side of the transfer film 2 to apply the tension as a whole, thereby preventing the transfer film 2 from being waved prior to liquid landing and preventing the foam from being waved. Can be prevented. Since the film tension applying roller 52 is in contact with the back side of the transfer film 2 on the non-transfer side, the design of the pattern on the transfer side is hardly affected. In addition, by adjusting the position of the film tension applying roller 52, it is possible to set a tension suitable for preventing undulation. This contributes to alleviation of meandering of the transfer film 2 and, in turn, contributes to improvement in delivery reliability of the transfer film 2 to the guide means 45.

  (3) The water pressure transfer apparatus 1 includes the film submergence prevention plate 53 as described above. Therefore, the transfer film 2 guided downward along the side wall surface 51a is guided and travels in a direction parallel to the water surface. As a result, the submergence is prevented and horizontal driving force is applied. . This contributes to alleviation of meandering of the transfer film 2 and, in turn, contributes to improvement in delivery reliability of the transfer film 2 to the guide means 45.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the film feeding unit is embodied as the feeding conveyor 31, but may be embodied as another configuration (for example, a feeding roller).

  In the above embodiment, the film tension applying roller 52 that is rotatably supported is used, but a simple bar-like or plate-like film tension applying member may be used instead.

  In the above-described embodiment, the example using the steering wheel 3 as the transfer base material has been described. However, in the case where a device other than this is used (for example, a component such as a console box, an instrument panel, or an armrest). It may be embodied. Of course, the substrate to be transferred is not limited to automobile parts, but may be parts such as home appliances and office supplies.

  In the above-described embodiment, an example in which the transfer film 2 is not divided is shown. However, the transfer film 2 may be divided in the longitudinal direction before the film feeding means to form a plurality of cut films. Good. Here, in the case of a cut film, the width becomes narrower, and it becomes easier to flutter before landing, so that it is more difficult to realize stable landing. In this respect, even in the state of the cut film, according to the hydraulic transfer device 1 of the above embodiment, the surface tension of the water W1 can be reliably applied. Therefore, the back side of the transfer film 2 can be sucked into the side wall surface 51a of the weir 51, and the liquid landing position can be stabilized.

  In the above-described embodiment, the embodiment is embodied in the hydraulic transfer device 1 that applies decoration to the surface of the steering wheel 3 by hydraulic transfer, but the hydraulic transfer device performs transfer using the pressure of a liquid other than water. It may be embodied in.

  In the above embodiment, since the dam 51 is provided so as to extend in the vertical direction, the side wall surface 51a also extends in the vertical direction. Modifications may be made as in another embodiment shown. For example, in the hydraulic transfer device 1A of another embodiment shown in FIG. 3, the weir 51 is provided so as to be entirely inclined with respect to the water surface except for several cm at the upper end, and the side wall surface 51a is similarly formed. The surface is inclined with respect to the water surface. Although the inclination angle in this case is not limited, it is preferably about 35 ° to 75 °, and is set to about 60 ° in this embodiment. In the hydraulic transfer device 1B according to another embodiment shown in FIG. 4, a protrusion 57 that protrudes toward the film traveling direction is integrally formed in the upper region of the side wall surface 51a of the weir 51, and a plurality of surfaces of the protrusion 57 are provided. (I.e., the inclination angle gradually decreases as it goes to the tip of the protrusion 57). In the hydraulic transfer device 1C according to another embodiment shown in FIG. 5, a protrusion 58 protruding in the film traveling direction is integrally formed in the upper region of the side wall surface 51a of the weir 51, and the surface of the protrusion 57 is curved. It is a concave surface (that is, the inclination angle gradually decreases toward the tip of the protrusion 58). In addition, said protrusion part 57,58 may be integrally formed in the side wall surface 51a of the dam 51, and may be comprised by attaching the member formed separately.

  Next, in addition to the technical ideas described in the claims, the technical ideas grasped by the embodiments described above are listed below.

  (1) The hydraulic transfer device according to claim 2, wherein the film tension applying member is a film tension applying roller that is rotatable and supported in a horizontal state.

  (2) The hydraulic transfer device according to any one of claims 1 to 4 and any one of the above ideas 1, wherein the height of the weir relative to the water surface in the transfer region is 20 mm or more and 60 mm or less.

  (3) In any one of claims 1 to 4 and thoughts 1 and 2, the substrate to be transferred is an annular substrate, and the plurality of substrates to be transferred are rotated in the circumferential direction. Thus, a hydraulic transfer apparatus is characterized in that a part of the transfer film is transferred to the surface of the substrate to be transferred.

  (4) The hydraulic transfer device according to any one of claims 1 to 4, and any one of the above thoughts 1 to 3, wherein the transfer film is a plurality of cut films that are divided along the longitudinal direction. .

1 is a schematic sectional view showing a hydraulic transfer device according to a first embodiment. The principal part enlarged view which shows the said hydraulic transfer apparatus. The principal part enlarged view which shows the hydraulic transfer apparatus of another embodiment. The principal part enlarged view which shows the hydraulic transfer apparatus of another embodiment. The principal part enlarged view which shows the hydraulic transfer apparatus of another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A, 1B, 1C ... Hydraulic transfer device as a hydraulic transfer device 2 ... Transfer film 3 ... Steering wheel as a substrate to be transferred 5 ... Transfer tank as a liquid tank 5a ... Reception side of transfer tank 5b ... Transfer tank 13 ... Recovery pipe constituting liquid flow generation means 15 ... Pump constituting liquid flow generation means 16 ... Supply pipe constituting liquid flow generation means 31 ... Feed conveyor 31 as film delivery means
45 ... Guiding means 51 ... Weir 51a ... Side wall surface 52 ... Film tension imparting roller as a film tension imparting member 53 ... Film submersion prevention plate as a film submersion prevention body 55 ... Height difference W1 ... Water as liquid

Claims (3)

A liquid tank for storing a liquid for floating and expanding a swellable transfer film;
A liquid flow generating means for generating a liquid flow in the liquid in the liquid tank from the receiving side for receiving the transfer film toward the discharge side for discharging the transfer film;
A film delivery means disposed above the receiving side of the liquid tank and sending out the transfer film hanging down to the receiving side of the liquid tank;
Guide means for guiding the transfer film along the direction of the liquid flow while restricting expansion of the transferred transfer film in the width direction, and a part of the transfer film is transferred by the action of hydraulic pressure In an apparatus for transferring to the surface of a substrate,
A dam that is disposed on the receiving side of the liquid tank and below the transfer film sending means, and includes a weir that constantly flows the liquid so that the liquid flows down the side wall surface ;
A film submergence prevention body that protrudes horizontally from the side wall surface of the weir toward the discharge side of the transfer film and has the same height as the liquid surface,
A hydraulic transfer apparatus, wherein the back side of the transfer film hanging down from the film delivery means is configured to be sucked and landed on the side wall surface of the weir by the action of the surface tension of the liquid. .   It further includes a film tension applying member which is disposed between the film delivery means and the weir so as to be position-adjustable, and which contacts the back side of the transfer film before liquid deposition and applies overall tension. The hydraulic transfer device according to claim 1, wherein 3. The hydraulic transfer device according to claim 1, wherein a difference between an upper end height of the weir and a liquid level of the liquid before crossing the weir is set to 3 mm or more and 7 mm or less.

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