JP5757141B2 - Recording device - Google Patents

Description

  The present invention relates to a recording apparatus that conveys a medium such as paper.

  The ink jet recording apparatus includes a recording head that ejects ink droplets onto a recording sheet that is a recording medium, and a platen that supports the recording sheet and defines the position of the recording sheet with respect to the recording head. As such an ink jet recording apparatus, there is known an apparatus capable of realizing so-called borderless recording in which recording is performed on a recording sheet without margin (see, for example, Patent Document 1).

JP 2010-30307 A

  However, when the shape of the recording medium is atypical in the prior art, the ink may come off from the outer edge of the recording medium, and the ink may adhere to the platen that holds the recording medium. Then, there is a possibility that the back surface of another recording medium may be soiled. Further, if the shape of the recording medium is atypical, there is a problem that it is difficult to stably convey the recording medium below the recording head.

  The present invention has been made in view of the above circumstances, and can record a borderless recording without smearing the back surface, even if it is an atypical recording medium. An object is to provide an apparatus.

In order to solve the above problems, a recording apparatus according to the present invention includes a transport unit that transports a recording medium having an atypical shape, and a liquid to the recording medium transported to a recording area by the transport unit. In the recording apparatus including the recording head for jetting and recording, the transport unit holds the recording medium and removes the liquid that has come off the edge of the recording medium when ejected from the recording head. A holding member that absorbs, a pair of rotating roller portions that are disposed upstream and downstream in the conveyance direction of the recording medium, and on which the holding member is wound, and the holding member that has passed through the recording area are wound up. And a winding unit, and the recording medium is conveyed to the recording area together with the holding member by rotating the rotating roller unit.

  According to the recording apparatus of the present invention, the holding member that holds the recording medium can absorb the liquid that has come off the edge of the recording medium even if the outer edge has various shapes like an atypical recording medium. it can. Therefore, it is possible to prevent the occurrence of a problem that the back surface of another recording medium placed on the holding member is contaminated with liquid. In addition, since the holding member holds the recording medium satisfactorily by, for example, adsorption or adhesion, even if the shape of the recording medium is atypical, it can be transported to the recording area satisfactorily and the border is not stained. No recording can be performed.

In the recording apparatus according to the aspect of the invention, it is preferable that the transport unit includes a winding unit that winds the holding member that has passed through the recording region.
According to this configuration, it is possible to reliably recover the holding member that has absorbed the liquid that has been removed from the edge of the recording medium by passing through the recording area. Therefore, since the recording medium is always held by the new holding member, it is possible to prevent the occurrence of a problem that the back surface of the recording medium is soiled with liquid.

In the recording apparatus according to the aspect of the invention, it is preferable that the transport unit includes an adsorption unit that adsorbs and holds the recording medium via the holding member, and the holding member is formed of a porous member.
According to this configuration, since the holding member is composed of the porous member, the back surface of the recording medium can be sucked when the suction force by the suction portion passes through the holding member satisfactorily. Therefore, it is possible to satisfactorily hold the recording medium on the holding member. Therefore, even a non-standard recording medium can be transported to the recording area satisfactorily.

In the recording apparatus of the present invention, it is preferable that the holding member is provided with an adhesive layer on the holding surface of the recording medium.
According to this configuration, the recording medium can be favorably held on the holding member by the adhesive force of the adhesive layer. Therefore, the non-standard recording medium can be transported to the recording area satisfactorily.

In the recording apparatus of the present invention, it is preferable that the holding member is provided with a non-absorbing layer that does not absorb the liquid on the side opposite to the surface on which the adhesive layer is provided.
The holding member has a surface provided with a non-permeable layer wound around a rotating roller portion. Therefore, it is possible to prevent the occurrence of a problem that the liquid absorbed by the holding member permeates the holding member and stains the rotating roller portion.

FIG. 2 is a side view illustrating a schematic configuration of the printer according to the first embodiment. The figure which shows schematic structure of an adsorption | suction part. FIG. 5 is a diagram for explaining the operation of a printer. The side view which shows schematic structure of the printer which concerns on 2nd embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, an example of a recording apparatus will be described. The recording apparatus is composed of an ink jet printer (hereinafter sometimes abbreviated as “printer”).

  In the drawings in the following description, an XYZ coordinate system may be used, and the X-direction indicates the direction in which recording paper on which recording has been specifically performed is transported from the printer to the paper discharge container. A scanning direction of the recording head for performing recording on the recording paper is indicated by the Y direction, and directions orthogonal to these XY directions are indicated by the Z direction. In addition, in the arrows indicating the X direction, Y direction, and Z direction in the drawings, those in which “•” is described in “◯” (view of the tip of the arrow from the front) are displayed from the back of the page to the front. It means an arrow heading, and “X” in “○” (a view of the arrow blades from the back) means an arrow heading from the front to the back of the page.

(First embodiment)
FIG. 1 is a side view illustrating a schematic configuration of a printer 100 according to the first embodiment. As shown in FIG. 1, the printer 100 includes a recording head 10 for ejecting ink onto a paper P as a recording medium, a transport unit 11 that transports the paper P to a recording area A below the recording head 10, After recording (printing) by the recording head 10, a paper storage unit 12 that stores the paper P discharged from the transport unit 11 and a paper supply unit 13 that supplies the paper P to the transport unit 11 are provided. Yes.

  Here, the printer 100 according to the present embodiment is for ejecting ink from the recording head 10 onto the atypical paper P. Here, the atypical shape is, for example, a disc shape, a star shape (shape according to the present embodiment shown in FIG. 2), a ring shape, a trapezoid shape, or a diamond shape other than a commonly used rectangular shape. Means shape.

  The recording head 10 can scan along the Y direction in the drawing along a guide shaft (not shown) arranged on the upper side of the conveyance path of the paper P, and reciprocates along the width direction of the paper P. It is supposed to move. The recording head 10 is provided with a plurality of nozzles that eject ink as liquid. The recording head 10 performs recording on the paper P by ejecting ink onto the surface of the paper P conveyed by the conveyance unit 11.

  The printer 100 divides print data included in one print job into a plurality of pieces, performs print processing based on each divided print data for each scan of the recording head 10, and performs the printing of the paper P between the print processing. The printed part is conveyed intermittently. That is, the printer 100 forms an image based on one print job by alternately repeating the operation of ejecting ink while the recording head 10 scans in the width direction of the paper P and the paper feeding operation of the paper P. It has become.

  The transport unit 11 holds the paper P and transports it below the recording head 10, and is disposed upstream and downstream in the transport direction of the paper P, and the transport roller 22 around which the holding member 21 is wound, and A driven roller 23 (a pair of rollers), an adsorbing part 30 provided between the pair of rollers 22 and 23, a holding part 24 that holds the holding member 21 in the state of a roll body RS wound in a roll shape, and a roller And a winding unit 25 that winds up the holding member 21 that has passed through 23.

  By the way, since the printer 100 according to the present embodiment performs borderless printing on the non-standard paper P as described above, the shape (outer shape) of the edge of the paper P is complicated, and thus the conventional rectangular shape is used. There is a high possibility that the ink ejected from the nozzles of the recording head 10 greatly deviates from the edge of the paper P with respect to borderless printing performed on the paper.

  On the other hand, the transport unit 11 according to the present embodiment absorbs ink that has come off the edge of the paper P when ejected from the recording head 10 using the holding member 21 that holds the paper P. The holding member 21 has a width that is greater than the width of the paper P (the width in the Y direction perpendicular to the transport direction) (see FIG. 3). As a result, even when borderless printing is performed on the non-standard-shaped paper P, the holding member 21 can reliably absorb the ink that has deviated from the edge of the paper P. This prevents the inside of the printer 100 from being stained with ink.

  Here, the holding member 21 is preferably composed of a porous member. Specifically, in this embodiment, a nonwoven fabric is used as a constituent material of the holding member 21. The thickness of the holding member 21 is set to 1 mm or less, for example.

  The winding unit 25 includes a winding shaft 25a that winds the holding member 21 and a rotation motor 25b that rotationally drives the winding shaft 25a. When the winding unit 25 rotates counterclockwise as the rotary motor 25b is driven, the winding member 25 unwinds the holding member 21 from the roll body RS on the upstream side in the conveyance direction of the paper P and holds the holding member 21 on the downstream side in the conveyance direction. Is supposed to wind up.

  Further, the transport unit 11 includes a pair of clamping rollers 26 that sandwich the paper P together with the holding member 21 on the downstream side of the recording head 10. The sandwiching roller pair 26 includes an upper surface side roller 26a and a lower surface side roller 26b, and each of the rollers 26a and 26b is made of, for example, an elastic member. Thus, damage is avoided when the printing surface and the holding member of the paper P are sandwiched.

The suction portion 30 is for holding the holding member 21 and generating a suction force for sucking and holding the holding member 21 via the holding member 21.
FIG. 2 is a diagram illustrating a schematic configuration of the suction unit 30. As shown in FIG. 2, the suction unit 30 includes a main body 30 a on which the holding member 21 is placed and a fan 30 b provided in the main body 30 a. A plurality of openings (not shown) are formed on the upper surface side of the main body 30a on which the holding member 21 is placed. Based on such a configuration, the suction unit 30 can suck air into the main body 30a from the plurality of openings by rotating the fan 30b.

  In the present embodiment, the holding member 21 is made of non-woven fabric as described above. Since the nonwoven fabric is a porous member, the ink ejected from the recording head 10 can be satisfactorily absorbed as described above. Furthermore, the holding member 21 can pass the suction force by the suction part 30 satisfactorily. Therefore, as shown in FIG. 2, the suction force by the suction unit 30 is reliably applied to the back surface of the paper P so that the paper P can be satisfactorily held on the holding member 21.

  The paper storage unit 12 is composed of a tray-shaped member that can store the paper P. The paper storage unit 12 is disposed at a position where the paper P thrown out from the transport unit 11 can be collected. Specifically, the sheet storage unit 12 is disposed at a position overlapping the conveyance unit 11 in a planar manner. In this way, the paper P cannot be recovered well because the paper storage unit 12 is too far from the transport unit 11, or the paper P is different from the paper storage unit 12 because the paper storage unit 12 is too close to the transport unit 11. The occurrence of problems such as falling to different positions is prevented.

  In this embodiment, the paper storage unit 12 is fixed. However, the paper storage unit 12 may be configured to move up and down with respect to the transport unit 11. According to this configuration, for example, by raising the paper storage unit 12 to the height of the discharge position of the paper P in the transport unit 11, the paper storage unit 12 can receive the paper P smoothly. In addition, the placement surface on which the paper P is placed in the paper storage unit 12 may be an inclined surface that is inclined downward as it is separated from the transport unit 11 side. According to this configuration, after the paper P discharged from the transport unit 11 first contacts the inclined surface, it can be satisfactorily slid into the paper storage unit 12 along the inclined surface. Therefore, it is possible to satisfactorily store the paper P in the paper storage unit 12.

  The paper supply unit 13 includes a paper holding unit 13 a that holds the paper P, and a paper feed roller 13 b that feeds the paper P held by the paper holding unit 13 a toward the transport unit 11. The sheet holding unit 13 a is in a state where the holding surface of the sheet P is inclined toward the holding member 21 of the conveying unit 11 by inclining one end on the conveying unit 11 side downward with respect to the other end opposite to the one end. Is installed. Further, the paper feed roller 13b has an outer shape that abuts on the paper P held by the paper holding unit 13a, and is capable of applying a conveyance force toward the conveyance unit 11 to the paper P by being rotationally driven. It has become. As described above, in the paper supply unit 13, the paper placement surface of the paper holding unit 13a forms an inclined surface, and the conveyance force of the paper feed roller 13b is applied to the paper P placed on the slope. The paper P can be reliably supplied to the transport unit 11.

Next, the operation of the printer 100 will be described.
The printer 100 drives the paper feed roller 13 b of the paper supply unit 13 to feed the paper P held by the paper holding unit 13 a toward the transport unit 11. In the transport unit 11, the transport roller 22 is driven. In the transport unit 11, the driven roller 23 rotates as the transport roller 22 rotates. Thereby, the holding member 21 wound around the conveyance roller 22 and the driven roller 23 moves in the + X direction shown in FIG. 1, and the paper P placed on the holding member 21 can be conveyed.

  At this time, the conveyance unit 11 drives the winding unit 25 in synchronization with the driving of the conveyance roller 22. Note that the driving force of the transport roller 22 and the winding unit 25 is set to be larger than the force with which the suction unit 30 described later sucks the paper P.

  The winding unit 25 rotates the winding shaft 25a by driving the rotation motor 25b, and winds the end of the holding member 21 on the front side in the moving direction onto the winding shaft 25a. On the other hand, the holding member 21 is unwound from the roll body RS on the upstream side in the transport direction of the paper P. In this way, in the transport unit 11, the holding member 21 moves as the winding unit 25 sequentially winds the holding member 21 unwound from the roll body RS along with the driving of the transport roller 22, so the holding member 21 moves. Is in a state where a predetermined tension is applied without causing slack. Therefore, the flatness of the surface on which the paper P is placed can be kept high, and the recording head 10 can eject ink onto the paper P satisfactorily.

  Further, in the present embodiment, the suction unit 30 is driven when the transport unit 11 transports the paper P. The suction unit 30 can apply a suction force to the holding member 21 placed on the main body 30a by rotating the fan 30b. Here, since the holding member 21 is composed of the nonwoven fabric which is a porous member as described above, the suction force by the suction portion 30 can be passed through well. Therefore, as shown in FIG. 2, the transport unit 11 can reliably hold the paper P on the holding member 21 by reliably applying the suction force by the suction unit 30 to the back surface of the paper P.

  As described above, since the transport unit 11 according to the present embodiment can transport the paper P while being sucked and held, it is possible to prevent the paper P from being displaced in the process of transporting it below the recording head 10. Can do. Therefore, even non-standard paper P can be printed in high quality by being transported to a recording area by the recording head 10 while being stably held.

  As shown in FIG. 3, the printer 100 performs predetermined recording by ejecting ink from nozzles (not shown) while scanning the recording head 10 in the Y direction on the paper P conveyed by the conveyance unit 11. Perform the action. In this embodiment, since borderless printing is performed on the paper P, the ink I deviated from the edge of the paper P is landed on the holding member 21 as shown in FIG. In this embodiment, a star-shaped paper P is used as the paper P as shown in FIG.

  Since the holding member 21 is made of a non-woven fabric as described above, the holding member 21 can absorb the ink I detached from the edge of the paper P. Therefore, it is possible to prevent the occurrence of a problem that the inside of the printer 100 is soiled by the ink that is removed from the edge of the paper P. Further, in the present embodiment, the holding member 21 that has passed below the recording head 10 (that is, the holding member that has absorbed ink that has been removed from the edge of the paper P) is wound around the winding unit 25. Therefore, it is possible to prevent the occurrence of a problem that the back surface of the paper P is soiled by reusing the holding member 21.

  The paper P on which the recording process has been performed by the recording head 10 is delivered to the paper storage unit 12 by the transport unit 11. When the paper P is delivered to the paper storage unit 12, the paper P is in a state of being separated from the holding member 21 on the upstream side in the transport direction, but is well held by the sandwiching roller pair 26 on the downstream side in the transport direction. Yes. Therefore, the sheet P is accommodated in the sheet accommodating unit 12 by the end on the upstream side in the conveying direction hanging downward as indicated by the one-dot chain line in FIG. 1, and the end on the downstream side in the conveying direction is the nipping roller. By being discharged from the pair 26 and falling into the paper storage unit 12, the entire paper P is stored in the paper storage unit 12.

  As described above, according to the printer 100 according to the present embodiment, even when the shape of the paper P is atypical, the holding member 21 that transports the paper P can absorb the ink that has come off the edge of the paper P. Further, since the used holding member 21 is not reused by collecting the used holding member 21 by the winding unit 25, the transport unit 11 can prevent a problem that the back surface of the other paper P becomes dirty. In addition, since the conveyance unit 1 can convey and hold the paper P by the adsorption unit 30, even if the shape of the paper P is atypical, it can be conveyed well below the recording head 10. In addition, borderless recording can be performed without staining the back surface.

(Second Embodiment)
Next, a printer according to a second embodiment of the invention will be described. The difference between this embodiment and the said embodiment is the structure of a conveyance part, About a structure other than that, it is common with 1st embodiment. Therefore, the same and common configurations as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified.

  FIG. 4 is a side view illustrating a schematic configuration of the printer 200 according to the second embodiment. As shown in FIG. 4, the printer 200 includes a recording head 10, a transport unit 111 that transports the paper P below the recording head 10, a paper storage unit 12 that stores the paper P discharged from the transport unit 111, and transport. And a paper supply unit 13 for supplying the paper P to the unit 111.

  The transport unit 111 holds the paper P and transports it below the recording head 10, and is disposed upstream and downstream in the transport direction of the paper P, and the transport roller 22 around which the holding member 121 is wound, and A driven roller 23, a holding unit 24, a winding unit 25, and a pair of holding rollers 126 and 127 that hold the paper P together with the holding member 121 on the upstream side and the downstream side in the conveyance direction of the paper P are provided.

  Unlike the transport unit 11 according to the first embodiment, the transport unit 111 according to the present embodiment has a configuration that does not include the suction unit 30. The holding member 121 of the transport unit 111 according to the present embodiment has, for example, a three-layer structure. Specifically, the holding member has a structure in which a base layer (non-transparent layer) 121a, an ink absorbing layer 121b, and an adhesive layer 121c are sequentially stacked. The base layer 121a is provided on the surface side that contacts the transport roller 22 and the driven roller 33, and the adhesive layer 121c is provided on the placement surface side on which the paper P is placed.

  The base layer 121a is made of a member that does not transmit the ink absorbed by the ink absorbing layer 121b, such as a rubber member or a resin member. Moreover, the ink absorption layer 121b is comprised from the same nonwoven fabric as the constituent material of the holding member 21 which concerns on said 1st embodiment. For this reason, it is possible to satisfactorily absorb ink deviated from the edge of the paper P. The adhesive layer 121 c is for holding the paper P by applying an adhesive force to the back surface of the paper P placed on the holding member 121. The adhesive layer 121c is an adhesive that can stably hold the paper P during conveyance and can be easily peeled off from the back surface of the paper P when the holding member 121 is taken up by the winding unit 25. Adhesives that can impart force are used.

  The sandwiching roller pair 126 includes an upper surface side roller 126a and a lower surface side roller 126b, and the sandwiching roller pair 127 includes an upper surface side roller 126a and a lower surface side roller 126b. Each roller 126a, 126b, 127a, 127b is comprised, for example from the elastic member. Thus, damage is avoided when the printing surface and the holding member of the paper P are sandwiched.

Next, the operation of the printer 200 will be described.
The printer 200 feeds the paper P held by the paper holding unit 13 a toward the transport unit 111. When the driven roller 23 rotates with the rotation of the conveyance roller 22, the conveyance unit 111 moves the conveyance roller 22 and the holding member 21 wound around the driven roller 23 in the + X direction shown in FIG. The paper P placed on the paper can be transported. The holding member 21 is wound around the winding unit 25 on the downstream side in the transport direction of the paper P, and is unwound from the roll body RS on the upstream side in the transport direction.

  The paper P placed on the holding member 121 of the transport unit 111 is satisfactorily held on the holding member 121 by the adhesive force of the adhesive layer 121 c formed on the uppermost layer of the holding member 121. It is conveyed downward.

  As described above, the transport unit 111 according to the present embodiment can transport the paper P in a state where the paper P is satisfactorily held by the adhesive force of the adhesive layer 121c. Deviation can be prevented from occurring. Therefore, even non-standard paper P can be printed in high quality by being transported to a recording area by the recording head 10 while being stably held.

  The printer 200 performs a predetermined borderless recording operation by ejecting ink from nozzles (not shown) while scanning the recording head 10 on the paper P conveyed by the conveyance unit 111. At this time, the ink deviated from the edge of the paper P reaches the holding member 121.

  Since the holding member 121 includes the ink absorbing layer 121b made of a nonwoven fabric, the holding member 121 can absorb ink that has come off the edge of the paper P. Therefore, it is possible to prevent the occurrence of the problem that the inside of the printer 200 is soiled by the ink that is removed from the edge of the paper P. Further, in the present embodiment, the holding member 121 that has passed under the recording head 10 (that is, the holding member 121 that has absorbed ink removed from the edge of the paper P) is taken up by the take-up unit 25, and thus the holding member 121. As a result of the reuse, it is possible to prevent the occurrence of problems such as the back side of the paper P becoming dirty.

  Since a base layer 121a that does not transmit ink is formed below the ink absorbing layer 121b that has absorbed ink in the holding member 121, the transport roller 22 and the driven roller 23 around which the holding member 121 is wound are used as the ink absorbing layer. It is possible to prevent the occurrence of a problem such that the ink is absorbed by the ink absorbed by 121b. The paper P on which the recording process has been performed by the recording head 10 is delivered to the paper storage unit 12 by the transport unit 111.

  As described above, also in the printer 200 according to the present embodiment, the holding member 121 can hold the paper P satisfactorily and can absorb ink that has come off the edge of the paper P. Therefore, even a non-standard paper P can be transported satisfactorily below the recording head 10, and borderless printing can be performed without staining the back surface.

  In addition, this invention is not limited to embodiment mentioned above, In the range which does not deviate from the meaning of invention, it can change suitably.

  In the above-described embodiment, the recording apparatus adopting the inkjet method as the recording method is described. However, the recording device can be changed to an arbitrary recording method such as an electrophotographic method or a thermal transfer method. Further, the recording apparatus is not limited to a printer, but may be a FAX apparatus, a copying apparatus, or a multifunction machine having a plurality of these functions. Further, as the recording apparatus, a liquid ejecting apparatus including a liquid ejecting head that ejects or ejects a small amount of liquid droplets other than ink may be employed. In addition, a droplet means the state of the liquid discharged from the said liquid ejecting apparatus, and shall also include what pulls a tail in granular shape, tear shape, and thread shape. The liquid here may be any material that can be ejected by the liquid ejecting apparatus. For example, it may be in a state in which the substance is in a liquid phase, such as a liquid with high or low viscosity, sol, gel water, other inorganic solvents, organic solvents, solutions, liquid resins, liquid metals (metal melts ) And a liquid as one state of a substance, as well as a material in which particles of a functional material made of a solid such as a pigment or metal particles are dissolved, dispersed or mixed in a solvent. Further, representative examples of the liquid include ink and liquid crystal as described in the above embodiment. Here, the ink includes general water-based inks and oil-based inks, and various liquid compositions such as gel inks and hot melt inks. As a specific example of the liquid ejecting apparatus, for example, a liquid containing a material such as an electrode material or a color material used for manufacturing a liquid crystal display, an EL (electroluminescence) display, a surface emitting display, a color filter, or the like in a dispersed or dissolved state. It may be a liquid ejecting apparatus for ejecting, a liquid ejecting apparatus for ejecting a bio-organic material used for biochip manufacturing, a liquid ejecting apparatus for ejecting a liquid as a sample used as a precision pipette, a textile printing apparatus, a microdispenser, or the like.

  Further, the conveying device is not limited to the one that conveys the medium recorded by the recording device to the sorting device. For example, it is good also as a conveying apparatus which conveys the medium which performed various processes, such as the sticking process of the seal | sticker with respect to a medium, foil transfer process, and dyeing | staining process, to the position which performs a subsequent process (for example, packing, inspection, etc.). . Further, the medium is not limited to paper, and can be composed of any material such as metal, plastic film, and cloth.

A ... recording area, P ... paper (recording medium), 10 ... recording head, 11 ... conveying unit, 21, 121 ... holding member, 22 ... conveying roller (one of a pair of roller units), 23 ... following roller (a pair of driven rollers) The other of the roller part), 25 ... winding part, 30 ... suction part, 100, 200 ... printer (printing device), 121a ... base layer (non-transparent layer), 121c ... adhesive layer

Claims (4)

A transport unit for transporting a recording medium having an atypical shape;
In a recording apparatus comprising: a recording head that records by jetting liquid onto the recording medium conveyed to the recording area by the conveying unit;
The transport unit holds the recording medium and absorbs the liquid that has come off the edge of the recording medium when ejected from the recording head; and an upstream side in the transport direction of the recording medium And a pair of rotating roller portions around which the holding member is wound, and a winding portion that winds the holding member that has passed through the recording area, and rotates the rotating roller portion. Thus, the recording apparatus transports the recording medium together with the holding member to the recording area. The transport unit has a suction part that sucks and holds the recording medium via the holding member;
The recording apparatus according to claim 1, wherein the holding member is made of a porous member. The recording apparatus according to claim 1, wherein the holding member is provided with an adhesive layer on a holding surface of the recording medium. The recording apparatus according to claim 3 , wherein the holding member is provided with a non-permeable layer that does not transmit the liquid on a surface opposite to a surface on which the adhesive layer is provided.

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