JP2018146581A - Defect inspection system, film manufacturing apparatus, film manufacturing method, printing apparatus and printing method - Google Patents

Abstract

A defect inspection system, a film manufacturing apparatus, and a film capable of appropriately performing printing in a recording area along an edge of a film even when meandering occurs during conveyance of a long strip film. Provided are a manufacturing method, a printing device, and a printing method. A printing device (50) for printing on a recording area (S) along an edge of a film (F105) while transporting a long strip-shaped film (F105), and a print head (13a) for printing on the film (F105). A film meander detecting unit 53 for detecting meandering of the film F105, and a head operating unit 51 for moving the print head 13a in a direction intersecting the transport direction of the film F105. The head operation unit 51 moves the print head 13a to a position facing the recording area S in accordance with the meandering. [Selection diagram] FIG.

Description

  The present invention relates to a defect inspection system, a film manufacturing apparatus, a film manufacturing method, a printing apparatus, and a printing method.

  For example, an optical film such as a polarizing plate is wound around a core material after performing a defect inspection such as a foreign matter defect or an uneven defect. Information on the position and type of the defect (hereinafter referred to as defect information) is recorded on the optical film by printing a barcode on the end of the optical film or marking the defective part. When the winding amount reaches a certain amount, the optical film wound around the core is separated from the optical film on the upstream side and shipped as a raw roll. For example, Patent Document 1 discloses a defect inspection system including a defect inspection device and a recording device that records defect information on a film on an optical film conveyance line.

JP 2011-7779 A

  By the way, in the above-described defect inspection system, when recording defect information on an optical film, the optical film being transported may meander depending on the state of the optical film, transport conditions, and the like. When such meandering occurs in the optical film, defect information printed by the ink ejected from the print head is not properly recorded in the recording area along the edge of the optical film, resulting in a printing error. There is a risk of it.

  The present invention has been proposed in view of such a conventional situation, and even when meandering occurs during conveyance of a long belt-like film, printing is performed on a recording area along the edge of the film. It is an object of the present invention to provide a defect inspection system, a film manufacturing apparatus, a film manufacturing method, a printing apparatus, and a printing method that can be appropriately performed.

  As means for solving the above problems, according to an aspect of the present invention, a transport line for transporting a long strip of film, a defect inspection apparatus for performing a defect inspection of a film transported by the transport line, and the defect A recording device for recording defect information based on a result of the inspection on a film conveyed on the conveyance line, and the recording device prints the defect information on a recording area along an edge of the film. A head, a meandering detection unit that detects meandering of the film, and a head operation unit that moves the print head relative to the film in a direction that intersects the transport direction of the film, and According to the meandering of the film detected by the meandering detection unit, the head operation unit moves the print head to a position facing the recording area. System is provided.

  In the defect inspection system according to the aspect, the meandering detection unit includes a plurality of sensors arranged side by side in a direction intersecting with the film conveyance direction, and the plurality of sensors are controlled by the head operation unit. It may be configured to be moved and operated integrally with the print head in a direction intersecting the film transport direction.

  In the defect inspection system according to the aspect described above, when the print head is located at a position facing the recording area, a signal different between at least one of the plurality of sensors and the other sensor is present. The detected configuration may be used.

  Further, in the defect inspection system according to the aspect, the meandering detection unit is disposed so as to face at least one or a plurality of light sources that emit light toward the film and the light sources with the film interposed therebetween as the sensor. It may be configured to have a plurality of light receiving elements.

  Moreover, according to the aspect of this invention, a film manufacturing apparatus provided with the said any defect inspection system is provided.

  Moreover, according to the aspect of this invention, the film manufacturing method including the process of carrying out a defect inspection using the said any defect inspection system is provided.

  According to another aspect of the present invention, there is provided a printing apparatus that performs printing on a recording area along an edge of the film while a long belt-shaped film is conveyed, and performs printing on the film. A print head, a meander detection unit that detects meandering of the film, and a head operation unit that moves the print head relative to the film in a direction that intersects the film transport direction. In accordance with the meandering of the film detected by the meander detection unit, the head operating unit moves the print head to a position facing the recording area.

  Further, in the printing apparatus according to the aspect, the meandering detection unit includes a plurality of sensors arranged in a direction intersecting the film conveyance direction, and the plurality of sensors are printed by the head operation unit. A configuration may be adopted in which the head is integrally moved with the head in a direction intersecting the film transport direction.

  Further, in the printing apparatus according to the aspect, when the print head is located at a position facing the recording area, a signal that is different between at least one of the plurality of sensors and the other sensor is detected. It may be configured.

  In the printing apparatus according to the aspect, the meandering detection unit may include at least one or a plurality of light sources that emit light toward the film.

  Further, according to an aspect of the present invention, there is provided a printing method for performing printing on a recording area along an edge of the film using a print head while a long belt-shaped film is conveyed. Detecting the meander, moving the print head to a position facing the recording area relative to the film in accordance with the detected meander of the film, and using the print head And a step of printing on the recording area.

  In the printing method of the above aspect, a plurality of sensors that are arranged side by side in a direction intersecting with the film conveyance direction and that are moved and operated in a direction that intersects the film conveyance direction integrally with the print head are provided. And a method of detecting an edge portion of the film.

  In the printing method of the above aspect, when the print head is at a position facing the recording area, a signal that is different between at least one of the plurality of sensors and the other sensor is detected. It may be a method to do.

  Further, the printing method of the above aspect may be a method using at least one or a plurality of light sources that emit light toward the film.

  As described above, according to the aspect of the present invention, it is possible to appropriately perform printing in the recording area along the edge portion of the film even when meandering occurs while the long belt-shaped film is conveyed. It is possible to provide a defect inspection system, a film manufacturing apparatus, a film manufacturing method, a printing apparatus, and a printing method.

It is a top view which shows an example of a liquid crystal display panel. It is sectional drawing of the liquid crystal display panel shown in FIG. It is sectional drawing which shows an example of an optical film. It is a side view which shows the structure of a film manufacturing apparatus and a defect inspection system. It is a top view which shows the structure of a double-sided bonding film. The structure of a printing apparatus is shown, (a) is the top view seen from the upper side of the film, (b) is the side view seen from the conveyance direction of the film. 6 shows the operation of the printing apparatus shown in FIG. 6, (a) is a side view when the print head is in a normal position, (b) is a side view when the print head is outside, and (c) is a print It is a side view in case a head exists inside. It is a side view which shows an example of a recording device. An example of a cover is shown, (a) is a plan view seen from above the film, (b) is a side view seen from the upstream side of the film, and (c) is seen from the outside of the film. It is a side view. It is a top view which shows the modification of a cover. The modification of a cover is shown, (a) is the perspective view, (b) is the side view. Another embodiment of a cover is shown, (a) is the top view, (b) is the side view.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In this embodiment, as a production system for an optical display device, a film manufacturing apparatus constituting a part thereof and a film manufacturing method using this film manufacturing apparatus will be described.

  The film manufacturing apparatus is bonded to a panel-shaped optical display component (optical display panel) such as a liquid crystal display panel or an organic EL display panel. For example, a film-shaped optical device such as a polarizing film, a retardation film, or a brightness enhancement film is used. A member (optical film) is manufactured. The film manufacturing apparatus constitutes a part of a production system for producing an optical display device including such optical display components and optical members.

  In the present embodiment, a transmissive liquid crystal display device is illustrated as an optical display device. The transmissive liquid crystal display device includes a liquid crystal display panel and a backlight. In this liquid crystal display device, illumination light emitted from the backlight is incident from the back side of the liquid crystal display panel, and light modulated by the liquid crystal display panel is emitted from the front side of the liquid crystal display panel, thereby displaying an image. It is possible.

(Optical display device)
First, the configuration of the liquid crystal display panel P shown in FIGS. 1 and 2 will be described as an optical display device. FIG. 1 is a plan view showing the configuration of the liquid crystal display panel P. FIG. 2 is a cross-sectional view of the liquid crystal display panel P along the cutting line AA shown in FIG. In FIG. 2, hatching showing a cross section is omitted.

  As shown in FIGS. 1 and 2, the liquid crystal display panel P includes a first substrate P1, a second substrate P2 disposed opposite to the first substrate P1, a first substrate P1, and a second substrate. And a liquid crystal layer P3 arranged between the substrate P2.

  The first substrate P1 is made of a transparent substrate having a rectangular shape in plan view. The second substrate P2 is made of a transparent substrate having a rectangular shape that is relatively smaller than the first substrate P1. The liquid crystal layer P3 is a region of a rectangular shape in plan view surrounded by a sealing material (not shown) between the first substrate P1 and the second substrate P2 and surrounded by the sealing material. Arranged inside. In the liquid crystal display panel P, an area that fits inside the outer periphery of the liquid crystal layer P3 in plan view is a display area P4, and an outer area that surrounds the display area P4 is a frame portion G.

  On the back surface (backlight side) of the liquid crystal display panel P, a first optical film F11 as a polarizing film, a second optical film F12 as a polarizing film, and a third optical film F13 as a brightness enhancement film, Are laminated and bonded in order. Hereinafter, the first, second, and third optical films F11, F12, and F13 may be collectively referred to as an optical film F1X.

(Optical film)
Next, an example of the optical sheet FX constituting the optical film F1X shown in FIG. 3 will be described. FIG. 3 is a cross-sectional view showing the configuration of the optical sheet FX. In FIG. 3, hatching showing a cross section is omitted.

  The optical film F1X is obtained by cutting a sheet piece (chip) having a predetermined length from the long belt-shaped optical sheet (original fabric) FX shown in FIG. Specifically, the optical sheet FX includes a base material sheet F4, an adhesive layer F5 provided on one surface (upper surface in FIG. 3) of the base material sheet F4, and the base material sheet F4 via the adhesive layer F5. Separator sheet F6 provided on one surface of the sheet, and a surface protection sheet F7 provided on the other surface (lower surface in FIG. 3) of the base sheet F4.

  In the case of a polarizing film, for example, the base sheet F4 has a structure in which a polarizer F4a is sandwiched between a pair of protective films F4b and F4c. The adhesive layer F5 is for attaching a sheet piece (optical film F1X) to the liquid crystal display panel P. The separator sheet F6 protects the adhesive layer F5, and is peeled from the adhesive layer F5 before the sheet piece (optical film F1X) is bonded to the liquid crystal display panel P. Hereinafter, the part remove | excluding the separator sheet F6 from the optical film F1X is called the bonding sheet | seat F8. The surface protection sheet F7 protects the surface of the base material sheet F4, and is peeled off from the surface of the sheet piece (optical film F1X) after the sheet piece (optical film F1X) is attached to the liquid crystal display panel P. The

  In addition, about the base material sheet F4, it is good also as a structure which abbreviate | omitted any one among a pair of protective films F4b and F4c. For example, the protective film F4b on the adhesive layer F5 side may be omitted, and the adhesive layer F5 may be directly provided on the polarizer F4a. The protective film F4c on the surface protective sheet F7 side may be subjected to a surface treatment such as a hard coat treatment that protects the outermost surface of the liquid crystal display panel P or an antiglare treatment that provides an antiglare effect. . Moreover, about the base material sheet F4, not only the thing of the laminated structure mentioned above but the thing of a single layer structure may be sufficient. Further, the surface protection sheet F7 can be omitted.

(Film manufacturing apparatus and film manufacturing method)
Next, the film manufacturing apparatus 100 shown in FIG. 4 will be described. FIG. 4 is a side view showing the configuration of the film manufacturing apparatus 100.

  As shown in FIG. 4, the film manufacturing apparatus 100, for example, bonded a long strip-shaped second film F102 serving as a surface protective film to one surface of a long strip-shaped first film F101 serving as a polarizing film. Then, the second film F2 and the third film are formed on both surfaces of the first film F101 by laminating a long belt-like third film F103 serving as a surface protective film on the other surface of the first film F101. The optical film F10X to which F103 is bonded is manufactured.

  Specifically, the film manufacturing apparatus 100 includes a first transport line 101, a second transport line 102, a third transport line 103, a fourth transport line 104, and a fifth transport line 105. And a winding unit 106.

  Among these, the 1st conveyance line 101 forms the conveyance path which conveys the 1st film F101, and the 2nd conveyance line 102 is the 2nd film F102 unwound from the 1st original fabric roll R1. The third conveyance line 103 forms a conveyance path for conveying the single-sided bonded film F104 in which the second film F102 is bonded to one surface of the first film F101, The 4th conveyance line 104 forms the conveyance path | route which conveys the 3rd film F103 unwound from the 2nd original fabric roll R2, and the 5th conveyance line 105 is 1st of the single-sided bonding film F104. The conveyance path which conveys the double-sided bonding film F105 (optical film F10X) by which the 3rd film F103 was bonded to the surface by the side of the film F101 (other surface of the 1st film F101). It is formed. And the manufactured optical film F10X is wound up by the core material as the 3rd original fabric roll R3 in the winding-up part 106. FIG.

  For example, the first transport line 101 is a TAC (Triacetylcellulose) on both sides of a film that is a base material of a polarizer such as PVA (Polyvinyl Alcohol). A long strip-shaped first film F101 obtained by laminating a protective film or the like is transported toward the third transport line 103.

  Specifically, the first transport line 101 includes a pair of first nip rolls 111a and 111b from one side across the upstream side of the third transport line 103 toward the third transport line 103, and A first accumulator 112 including a plurality of first dancer rolls 112a and 112b and a first guide roll 113 are sequentially arranged in the horizontal direction.

  The pair of first nip rolls 111a and 111b rotate in opposite directions while sandwiching the first film F101 therebetween, thereby causing the first film F101 in the direction of arrow a (rightward) shown in FIG. It is what draws out.

  The first accumulator 112 is for absorbing the difference due to the fluctuation of the feeding amount of the first film F101 and reducing the fluctuation of the tension applied to the first film F101. Specifically, the first accumulator 112 includes a plurality of dancer rolls 112a located on the upper side and a plurality located on the lower side between the first nip rolls 111a and 111b and the first guide roll 113. The dancer rolls 112b are alternately arranged.

  In the first accumulator 112, while the first film F101 is alternately wound on the dancer roll 112a on the upper side and the dancer roll 112b on the lower side, while the first film F101 is conveyed, The dancer roll 112a and the lower dancer roll 112b are moved up and down relatively. Thereby, it is possible to accumulate the first film F101 without stopping the first transport line 101. For example, in the first accumulator 112, the distance between the upper dancer roll 112a and the lower dancer roll 112b is increased to increase the accumulation of the first film F101, while the upper dancer roll 112a. By reducing the distance between the dancer roll 112b and the lower dancer roll 112b, accumulation of the first film F101 can be reduced. The first accumulator 112 is operated, for example, at the time of work such as paper splicing after replacing the core material of the raw fabric rolls R1 to R3.

  The first guide roll 113 guides the first film F101 drawn out by the first nip rolls 111a and 111b toward the upstream side of the third transport line 103 while rotating. The first guide roll 113 is not limited to a single arrangement, and may be a plurality of arrangements.

  The second transport line 102 is, for example, a third transport line 103 while unwinding a long belt-shaped second film F102 serving as a surface protection film such as PET (Polyethylene terephthalate) from the first raw roll R1. It is made to convey toward

  Specifically, the second transport line 102 includes a pair of second nip rolls 121a and 121b from the other side across the upstream side of the third transport line 103 toward the third transport line 103, A second accumulator 122 including a plurality of second dancer rolls 122a and 122b and a plurality of second guide rolls 123a and 123b are sequentially arranged in the horizontal direction.

  The pair of second nip rolls 121a and 121b rotate in opposite directions while sandwiching the second film F102 therebetween, thereby causing the second film F102 in the direction of the arrow b (left direction) shown in FIG. It is what draws out.

  The second accumulator 122 is for absorbing the difference due to the fluctuation of the feed amount of the second film F102 and reducing the fluctuation of the tension applied to the second film F102. Specifically, the second accumulator 122 is located between the second nip rolls 121a and 121b and the second guide rolls 123a and 123b, and a plurality of dancer rolls 122a located on the upper side and a lower side. And a plurality of dancer rolls 122b that are arranged alternately.

  In the second accumulator 122, the second film F102 is alternately wound on the upper dancer roll 122a and the lower dancer roll 122b, while the second film F102 is conveyed, The dancer roll 122a and the lower dancer roll 122b are moved up and down relatively in the vertical direction. As a result, the second film F102 can be accumulated without stopping the second transport line 102. For example, in the second accumulator 122, by increasing the distance between the upper dancer roll 122a and the lower dancer roll 122b, the accumulation of the second film F102 is increased, while the upper dancer roll 122a is increased. The accumulation of the second film F102 can be reduced by narrowing the distance between the dancer roll 122b and the lower dancer roll 122b. The second accumulator 122 is operated, for example, at the time of work such as paper splicing after replacing the core material of the raw fabric rolls R1 to R3.

  The plurality of second guide rolls 123a and 123b guide the second film F102 drawn by the second nip rolls 121a and 121b toward the upstream side of the third transport line 103 while rotating. . Note that the second guide rolls 123a and 123b are not limited to a plurality of arrangements, and may be a single arrangement.

  The 3rd conveyance line 103 conveys the elongate strip | belt-shaped single-sided bonding film F104 which bonded the 2nd film F102 on the one surface of the 1st film F101 toward the 5th conveyance line 105. As shown in FIG.

  Specifically, a pair of third nip rolls 131 a and 131 b are arranged on the third transport line 103. The pair of third nip rolls 131a and 131b is located at the junction of the downstream side of the first conveyance line 101 and the downstream side of the second conveyance line 102, and the first film F101 and the second film are interposed therebetween. The direction of the arrow c shown in FIG. 4 (downward direction) shows the single-sided bonding film F104 in which the first film F101 and the second film F102 are bonded by rotating in opposite directions while sandwiching the film F102. It is something to pull out.

  The fourth transport line 104 is, for example, a fifth transport line 105 while unwinding a long strip-shaped third film F103 serving as a surface protection film such as PET (Polyethylene terephthalate) from the second raw roll R2. It is made to convey toward

  Specifically, the fourth transport line 104 includes a pair of fourth nip rolls 141a and 141b from one side across the downstream side of the third transport line 103 toward the third transport line 103, and A third accumulator 142 including a plurality of third dancer rolls 142a and 142b and a plurality of fourth guide rolls 143a and 143b are sequentially arranged in the horizontal direction.

  The pair of fourth nip rolls 141a and 141b rotate in opposite directions while sandwiching the third film F103 therebetween, thereby causing the third film F103 in the direction of the arrow d (rightward) shown in FIG. It is what draws out.

  The third accumulator 142 is for absorbing the difference due to the variation in the feed amount of the third film F103 and reducing the variation in the tension applied to the third film F103. Specifically, the third accumulator 142 includes a plurality of dancer rolls 142a positioned on the upper side and a position positioned on the lower side between the fourth nip rolls 141a and 141b and the fourth guide rolls 143a and 143b. The plurality of dancer rolls 142b that are arranged alternately are arranged.

  In the third accumulator 142, while the third film F103 is alternately wound on the dancer roll 142a on the upper side and the dancer roll 142b on the lower side, the third film F103 is conveyed, The dancer roll 142a and the lower dancer roll 142b are moved up and down relatively in the vertical direction. Thus, the third film F103 can be accumulated without stopping the fourth transport line 104. For example, the third accumulator 142 increases the accumulation of the third film F103 by increasing the distance between the upper dancer roll 142a and the lower dancer roll 142b, while the upper dancer roll 142a. By reducing the distance between the lower dancer roll 142b and the lower dancer roll 142b, accumulation of the third film F103 can be reduced. The third accumulator 142 is operated, for example, at the time of work such as paper splicing after replacing the core material of the raw fabric rolls R1 to R3.

  The plurality of fourth guide rolls 143a and 143b rotate the third film F103 drawn by the fourth nip rolls 141a and 141b while rotating, respectively, on the downstream side of the third transport line 103 (of the fifth transport line 105). It guides towards the upstream side. Note that the fourth guide rolls 143a and 143b are not limited to a configuration in which a plurality of the fourth guide rolls 143a and 143b are disposed, and may be a configuration in which only one is disposed.

  The 5th conveyance line 105 is the long strip | belt-shaped double-sided bonding film which bonded the 3rd film F103 to the surface (other surface of the 1st film F101) of the 1st film F101 side of the single-sided bonding film F104. F105 (optical film F10X) is conveyed toward the 3rd original fabric roll R3.

  Specifically, the fifth transport line 105 includes a pair of fifth nip rolls 151a and 151b from the other side across the downstream side of the third transport line 103 toward the third original roll R3. The fifth guide roll 153a, the pair of sixth nip rolls 151c and 151d, the fourth accumulator 152 including a plurality of fourth dancer rolls 152a and 152b, and the sixth guide roll 153b are horizontal. They are arranged side by side in the direction.

  The pair of fifth nip rolls 151a and 151b is located at the junction of the downstream side of the third conveyance line 103 and the upstream side of the fifth conveyance line 105, and the single-sided bonding film F104 and the third side are interposed therebetween. The direction of the arrow e shown in FIG. 4 (downward direction) shows the double-sided bonding film F105 in which the single-sided bonding film F104 and the third film F103 are bonded by rotating in opposite directions while sandwiching the film F103. It is something to pull out.

  The fifth guide roll 153a guides the double-sided bonded film F105 drawn out by the fifth nip rolls 151a and 151b toward the fourth accumulator 152 while rotating. Note that the fifth guide roll 153a is not limited to a single arrangement, and may be a plurality of arrangements.

  The pair of sixth nip rolls 151c and 151d rotate in opposite directions while sandwiching the double-sided adhesive film F105 therebetween, thereby causing the double-sided optical film in the direction of arrow f (right direction) shown in FIG. F105 is pulled out.

  In the fourth accumulator 152, the upper side dancer roll 152 a and the lower side dancer roll 152 b are alternately wound on the upper side dancer roll 152 b, while the double sided laminate film F 105 is conveyed alternately, The dancer roll 152a and the lower dancer roll 152b are moved up and down relatively in the vertical direction. Thereby, it becomes possible to accumulate | store the double-sided bonding film F105, without stopping the 5th conveyance line 105. FIG. For example, in the fourth accumulator 152, by increasing the distance between the dancer roll 152a on the upper side and the dancer roll 152b on the lower side, the accumulation of the double-sided bonding film F105 is increased, while the dancer roll 152a on the upper side is increased. By narrowing the distance between the lower dancer roll 152b and the lower side dancer roll 152b, accumulation of the double-sided bonded film F105 can be reduced. For example, the fourth accumulator 152 is operated at the time of work such as paper splicing after the core materials of the raw fabric rolls R1 to R3 are replaced.

  The 6th guide roll 153b guides the double-sided bonding film F105 toward the 3rd original fabric roll R3. Note that the sixth guide roll 153b is not limited to a single arrangement, and may be a plurality of arrangements.

  The double-sided bonded film F105 is wound around the core material as the third original roll R3 of the optical film F10X in the winding unit 106, and then sent to the next step.

(Defect inspection system)
Next, the defect inspection system 10 provided in the film manufacturing apparatus 100 will be described.
As shown in FIG. 4, the defect inspection system 10 includes a conveyance line L, a first defect inspection device 11 and a second defect inspection device 12, a recording device 13, a first length measuring device 14 and a second length measuring device. The length measuring device 15 and the control device 16 are provided.

  The transport line L forms a transport path for transporting the film to be inspected. In the present embodiment, the transport line L is transported by the first transport line 101, the third transport line 103, and the fifth transport line 105. Line L is configured.

  The 1st defect inspection apparatus 11 performs the defect inspection of the 1st film F101 before the 2nd film F102 and the 3rd film F103 are bonded. Specifically, the first defect inspection apparatus 11 is used for various defects such as a foreign matter defect, a concavo-convex defect, and a bright spot defect generated when the first film F101 is manufactured or when the first film F101 is conveyed. Is detected. The first defect inspection apparatus 11 performs inspection processes such as a reflection inspection, a transmission inspection, an oblique transmission inspection, and a crossed Nicol transmission inspection on the first film F101 conveyed on the first conveyance line 101. By doing so, the defect of the 1st film F101 is detected.

  The first defect inspection apparatus 11 includes a plurality of illumination units 21a, 22a, and 23a that irradiate illumination light to the first film F101 on the upstream side of the first nip rolls 111a and 111b in the first transport line 101. And a plurality of light detectors 21b, 22b, and 23b that detect light transmitted through the first film F101 (transmitted light) or light reflected by the first film F101 (reflected light).

  In the present embodiment, because of the configuration for detecting transmitted light, the plurality of illumination units 21a, 22a, 23a and the light detection units 21b, 22b, 23b arranged in the transport direction of the first film F101 are respectively the first film. They are arranged facing each other across F101. Further, the first defect inspection apparatus 11 is not limited to such a configuration that detects transmitted light, but may have a configuration that detects reflected light or a configuration that detects transmitted light and reflected light. In the case of detecting reflected light, the light detection units 21b, 22b, and 23b may be disposed on the illumination units 21a, 22a, and 23a side.

  The illumination units 21a, 22a, and 23a irradiate the first film F101 with illumination light whose light intensity, wavelength, polarization state, and the like are adjusted according to the type of defect inspection. The light detection units 21b, 22b, and 23b capture an image of the position irradiated with the illumination light of the first film F101 using an image sensor such as a CCD. Images (defect inspection results) captured by the light detection units 21 b, 22 b, and 23 b are output to the control device 16.

  The 2nd defect inspection apparatus 12 performs the defect inspection of the 1st film F101 after the 2nd film F102 and the 3rd film F103 were bonded, ie, the double-sided bonding film F105. Specifically, the second defect inspection apparatus 12 is configured to bond the single-sided bonding film F104 and the double-sided bonding film F105 when the second film F102 and the third film F103 are bonded to the first film F101. Various defects such as a foreign matter defect, a concavo-convex defect, and a bright spot defect generated during conveyance are detected. For example, the second defect inspection apparatus 12 performs inspection processes such as a reflection inspection, a transmission inspection, an oblique transmission inspection, and a crossed Nicols transmission inspection on the double-sided bonded film F105 conveyed by the fifth conveyance line 105. By doing, the defect of the double-sided bonding film F105 is detected.

  The second defect inspection apparatus 12 includes a plurality of illumination units 24a and 25a that irradiate the double-sided bonding film F105 with illumination light downstream of the fifth nip rolls 151a and 151b in the fifth transport line 105, and It has the some light detection part 24b, 25b which detects the light (transmitted light) which permeate | transmitted the double-sided bonding film F105, or the light (reflected light) reflected by the double-sided bonding film F105.

  In this embodiment, because of the configuration for detecting transmitted light, a plurality of illumination units 24a and 25a and light detection units 24b and 25b arranged in the conveyance direction of the double-sided bonding film F105 sandwich the double-sided bonding film F105, respectively. Opposed to each other. The second defect inspection apparatus 12 is not limited to such a configuration that detects transmitted light, but may have a configuration that detects reflected light or a configuration that detects transmitted light and reflected light. In the case of detecting the reflected light, the light detection units 24b and 25b may be arranged on the illumination units 24a and 25a side.

  The illumination units 24a and 25a irradiate the double-sided bonding film F105 with illumination light whose light intensity, wavelength, polarization state, and the like are adjusted according to the type of defect inspection. The light detection units 24b and 25b capture an image of the position irradiated with the illumination light of the double-sided bonding film F105 using an imaging element such as a CCD. Images (defect inspection results) captured by the light detection units 24 b and 25 b are output to the control device 16.

  The recording device 13 records defect information (printing device) on the double-sided bonding film F105 based on the defect inspection results of the first defect inspection device 11 and the second defect inspection device 12. Specifically, the defect information includes information on the position and type of the defect, and is recorded (printed) as an identification code such as a character, a barcode, a two-dimensional code, (DataMatrix code, QR code (registered trademark), etc.), for example. ) In the identification code, for example, the distance detected by the first defect inspection apparatus 11 and the second defect inspection apparatus 12 is a distance along the film width direction from the position where the identification code is printed. Information indicating whether or not it exists at a position (information regarding the position of the defect) is included. The identification code may include information regarding the type of detected defect. In this embodiment, a 7 mm × 7 mm two-dimensional code is printed as defect information.

  The recording device 13 is provided on the downstream side of the second defect inspection device 12 in the fifth transport line 105. The recording device 13 includes a print head 13a that employs, for example, an inkjet method. Moreover, the 7th guide roll 153c which contact | connects the double-sided bonding film F105 is arrange | positioned in the position facing the print head 13a. And this printing head 13a discharges ink to the recording area along the edge part of the width direction of the double-sided bonding film F105 from the opposite side to the position which contact | connects the 7th guide roll 153c of the double-sided bonding film F105. Then, the defect information is printed.

  Here, as shown in FIG. 5, the double-sided bonding film F105 is formed so that the second film F102 and the third film F103 are wider than the first film F101. A margin area Ma made up of the second film F102 and the third film F103 is provided on both sides in the width direction of the first film F101 sandwiched between the third film F103 and the third film F103.

  The blank area Ma is located outside the area where the first film F101 is arranged, that is, the area that functions as a polarizing film (hereinafter referred to as a polarizing area) Pa, and the double-sided bonding film F105 is placed on the liquid crystal display panel P. When pasted on the liquid crystal display panel P, the liquid crystal display panel P is positioned outside the region overlapping the display region P4. The margin area Ma is an area that is cut and removed before being bonded to the liquid crystal display panel P.

  The recording device 13 records defect information in a blank area Ma that is a fixed distance away from the boundary B between the polarization area Pa and the blank area Ma of the double-sided bonded film F105. Therefore, an area where defect information is recorded in the blank area Ma is defined as a recording area S. In the present embodiment, the recording area S is provided in the blank area Ma on one side in the width direction of the double-sided bonded film F105.

  Moreover, the recording apparatus 13 records directly on a defective location by printing (marking) the dot-shaped, line-shaped, or frame-shaped mark of a size which includes a defect in the defective location of the double-sided bonding film F105. May be performed. At this time, in addition to the mark, information on the type of defect may be recorded by printing a symbol or pattern indicating the type of defect on the defective part.

  The first length measuring device 14 and the second length measuring device 15 measure the transport amount of the first film F101. Specifically, in the present embodiment, in the first transport line 101, a rotary encoder that constitutes the first length measuring device 14 on the first nip roll 111 a that is upstream of the first accumulator 112, A rotary encoder constituting the second length measuring device 15 is arranged on the third nip roll 131a on the downstream side of the one accumulator 112.

  The first length measuring device 14 and the second length measuring device 15 are provided with a rotary encoder according to the amount of rotational displacement of the first nip roll 111a and the third nip roll 131a rotating in contact with the first film F101. The conveyance amount of one film F101 is measured. The measurement results of the first length measuring device 14 and the second length measuring device 15 are output to the control device 16.

  In the present embodiment, since there is only one accumulator between the first defect inspection apparatus 11 and the recording apparatus 13, one length measuring device is provided upstream and downstream of the accumulator. It is an arranged configuration. On the other hand, when a plurality of accumulators exist between the first defect inspection apparatus 11 and the recording apparatus 13, the upstream side of the most upstream accumulator and the downstream side of the most downstream accumulator The length measuring device may be arranged one by one.

  The control device 16 performs overall control of each part of the film manufacturing apparatus 100. Specifically, the control device 16 includes a computer system as an electronic control device. The computer system includes an arithmetic processing unit such as a CPU and an information storage unit such as a memory and a hard disk.

  The information storage unit of the control device 16 stores an operating system (OS) that controls the computer system, a program that causes the arithmetic processing unit to execute various processes in each unit of the film manufacturing apparatus 100, and the like. In addition, the control device 16 may include a logic circuit such as an ASIC that executes various processes required for controlling each part of the film manufacturing apparatus 100. The control device 16 includes an interface for performing input / output with an external device of the computer system. For example, an input device such as a keyboard or a mouse, a display device such as a liquid crystal display, or a communication device can be connected to this interface.

  The control device 16 analyzes the images captured by the light detection units 21b, 22b, and 23b and the light detection units 24b and 25b, and determines the presence / absence (position) and type of the defect. When it determines with the control apparatus 16 having a defect in the 1st film F101 and the double-sided bonding film F105, it controls the recording device 13 and records defect information on the double-sided bonding film F105.

  In the defect inspection system 10, defect information is recorded at a predetermined timing after the defect inspection so that no deviation occurs between the defect inspection position of the double-sided bonded film F 105 and the information recording position of the defect information. For example, in the present embodiment, after the time when the defect inspection by the first defect inspection apparatus 11 or the second defect inspection apparatus 12 is performed, the conveyance amount of the film conveyed on the conveyance line L is calculated and calculated. When the transported amount coincides with the offset distance, recording is performed by the recording device 13.

  Here, the offset distance refers to the transport distance of the film between the first defect inspection device 11 and the second defect inspection device 12 and the recording device 13. Strictly speaking, the offset distance is defined as a position where defect inspection is performed by the first defect inspection apparatus 11 and the second defect inspection apparatus 12 (defect inspection position) and a position where defect information is recorded by the recording apparatus 13 ( It is defined as the transport distance of the film between (information recording position). Further, the offset distance varies when the first accumulator 112 is operated.

  The offset distance when the first accumulator 112 is not in operation (hereinafter referred to as the first offset distance) is stored in advance in the information storage unit of the control device 16. Specifically, the first defect inspection apparatus 11 and the second defect inspection apparatus 12 include a plurality of light detection units 21b, 22b, and 23b and light detection units 24b and 25b, and the light detection units 21b, 22b, Defect inspection is performed every 23b, 24b, 25b. Therefore, the information storage unit of the control device 16 stores the first offset distance for each of the light detection units 21b, 22b, 23b, 24b, and 25b.

  When the offset distance varies due to the operation of the first accumulator 112, the offset distance is corrected based on the difference in the transport amount of the first film F101 between the upstream side and the downstream side of the first accumulator 112. Calculate the value. That is, the control device 16 calculates the accumulation amount of the first film F101 by the first accumulator 112 from the measurement results of the first length measuring device 14 and the second length measuring device 15, and this first accumulator 112 A correction value for the offset distance is calculated based on the accumulated amount of the film F101.

  In the defect inspection system 10, when the first accumulator 112 is in operation, the recording device 13 corrects the timing for recording the defect information based on the offset distance correction value. For example, in the present embodiment, the offset distance correction value is calculated based on the measurement results of the first length measuring device 14 and the second length measuring device 15. Based on the correction value and the first offset distance, the control device 16 calculates an offset distance (hereinafter referred to as a second offset distance) when the first accumulator 112 is in operation.

  In the present embodiment, the time when the defect inspection by the first defect inspection device 11 and the second defect inspection device 12 is performed based on the measurement result of the first length measuring device 14 or the second length measuring device 15. Thereafter, the transport amount of the film transported on the transport line L is calculated, and recording is performed by the recording device 13 when the calculated transport amount matches the second offset distance.

  In the present embodiment, when the first accumulator 112 is in operation, apart from the defect information, information indicating that the first accumulator 112 has been operated (hereinafter referred to as accumulator operation information) is bonded on both sides. You may record on the film F105. When accumulator operation information is recorded, the operator carefully inspects the defective portion of the portion to which the accumulator operation information is attached, so that a recording position shift or the like can be detected. Thereby, the possibility that the non-defective portion is erroneously determined as a defective portion is reduced, and the yield is improved.

  By the way, in the defect inspection system 10 of this embodiment, the state of the double-sided bonding film F105 (for example, curl of the film edge, deviation at the time of film bonding, thickness unevenness in the film width direction, etc.) and conveyance conditions (for example, Due to roll misalignment, tension balance misalignment in the film width direction, etc., meandering may occur in the double-sided laminated film F105 being conveyed. When such meandering occurs in the double-sided adhesive film F105, defect information printed by the ink ejected from the print head 13a is not properly recorded in the recording area along the edge of the double-sided adhesive film F105. In addition, there is a risk of printing errors.

  In addition, the direction of “meandering” is the left-right direction (width direction) of the double-sided adhesive film F105 when the surface of the double-sided adhesive film F105 is viewed from above. “Meandering” of the double-sided adhesive film F105 being conveyed means, for example, when the surface of the double-sided adhesive film F105 is viewed from above, the double-sided adhesive film F105 is double-sided while shifting in the left-right direction (width direction). It means proceeding in the transport direction of the film F105.

  On the other hand, in the present embodiment, meandering occurs while the double-sided laminated film F105 is conveyed by using the printing device 50 as shown in FIGS. 6A and 6B as the recording device 13. Even in this case, it is possible to appropriately perform printing on the recording area S along the edge of the double-sided bonded film F105.

(Printing device and printing method)
Hereinafter, a specific configuration of the printing apparatus 50 according to the present embodiment and a specific printing method using the printing apparatus 50 will be described. In addition, Fig.6 (a) is a top view which shows arrangement | positioning of the printing apparatus 50 with respect to the double-sided bonding film F105. FIG.6 (b) is a side view which shows arrangement | positioning of the printing apparatus 50 with respect to the double-sided bonding film F105.

  As shown in FIGS. 6A and 6B, the printing apparatus 50 includes a head operation unit 51 that moves and operates the print head 13a in a direction (width direction) that intersects the conveyance direction of the double-sided bonding film F105. doing.

  The head operation unit 51 includes a support frame 52 that supports the print head 13a. The support frame 52 includes an upper arm 52a disposed opposite to the upper surface of the double-sided bonding film F105, a lower arm 52b disposed opposite to the lower surface of the double-sided bonding film F105, and a double-sided bonding film F105. It has the connection part 52c which is arrange | positioned on the outer side and connects between the upper arm 52a and the lower arm 52b. The upper arm 52a and the lower arm 52b are provided to extend in the width direction of the double-sided bonded film F105 in a state of facing each other. The connecting portion 52c is provided to extend in the vertical direction, and connects the base end sides of the upper arm 52a and the lower arm 52b. The print head 13a is attached to the upper arm 52a.

  The support frame 52 is supported so as to be slidable in the width direction of the double-sided bonding film F105. Further, the head operation unit 51 has a slide drive unit (not shown). The slide drive unit converts the rotational drive of the drive motor into a linear drive via a gear or a rack, and slides the support frame 52 in the width direction of the double-sided bonding film F105. Thereby, the print head 13a is driven to slide in the width direction of the double-sided bonding film F105 integrally with the support frame 52.

  The recording device 13 includes a meandering detection unit 53 that detects meandering of the double-sided bonded film F105. The meandering detecting unit 53 emits light toward the double-sided bonding film F105 (two in the present embodiment) and a plurality of light sources 54a and 54b that receive light emitted from the light sources 54a and 54b (this embodiment). In the embodiment, two sensors 55a and 55b are provided.

  The plurality of light sources 54a and 54b are attached to the upper arm 52a. The plurality of light sources 54a and 54b are positioned closer to the distal end side of the upper arm 52a than the print head 13a, and are arranged side by side in the extending direction of the upper arm 52a (the width direction of the double-sided bonded film F105). Among these, the light source closer to the print head 13a (one) is the first light source 54a, and the light source farther from the print head 13a (the other) is the second light source 54b. The light sources 54a and 54b may be visible light or infrared light as long as they have different transmittances when passing through the polarization region Pa and the blank region Ma. For example, infrared (IR) light is emitted. A light emitting element such as a light emitting diode (LED) can be used.

  The plurality of sensors 55a and 55b are attached to the lower arm 52b. The plurality of sensors 55a and 55b are arranged side by side in the extending direction of the upper arm 52a (the width direction of the double-sided bonding film F105) so as to face the plurality of light sources 54a and 54b. Of these, the sensor (one) facing the first light source 54a is the first sensor 55a, and the sensor facing the second light source 54b (the other) is the second sensor 55b. For each of the sensors 55a and 55b, for example, a light receiving element such as a photodiode (PD) can be used.

  In the meandering detection unit 53, the first sensor 55a receives the light emitted from the first light source 54a, and the second sensor 55b receives the light emitted from the second light source 54b. The plurality of light sources 54a and 54b and the plurality of sensors 55a and 55b are arranged in the same row as the print head 13a or downstream from the print head 13a in the transport direction of the double-sided bonding film F105. Further, the plurality of light sources 54a and 54b and the plurality of sensors 55a and 55b are moved and operated in the width direction of the double-sided bonding film F105 by the head operation unit 51 integrally with the print head 13a.

  In the printing apparatus 50 having the above-described configuration, the head operation unit 51 moves the print head 13a to a position facing the recording area S in accordance with the meandering of the double-sided bonding film F105 detected by the meandering detection unit 53.

  Here, as shown in FIGS. 7A to 7C, when meandering occurs in the double-sided bonding film F105 being conveyed, the print head 13a is moved to a position facing the recording area S. The operation will be described.

  FIG. 7A shows a case where the print head 13a is at a position facing the recording area S (hereinafter referred to as a normal position). In this case, in the width direction of the double-sided bonding film F105, the boundary B between the polarization area Pa and the blank area Ma of the double-sided bonding film F105 is positioned between the first sensor 55a and the second sensor 55b. Yes.

  Therefore, in the meandering detection unit 53, the light BL1 emitted from the first light source 54a passes through the blank area Ma and is received by the first sensor 55a. On the other hand, the light BL2 emitted from the second light source 54b passes through the polarization region Pa and is received by the second sensor 55b.

  In the present embodiment, the same light emitting element is used for the first light source 54a and the second light source 54b, and the same light receiving element is used for the first sensor 55a and the second sensor 55b. In this case, since the light transmittance is lower in the polarization region Pa than in the blank region Ma, the received light amount (signal) of the first sensor 55a becomes large (Hi), and the received light amount of the second sensor 55b ( Signal) becomes small (Lo).

  When such a signal is detected, the head operation unit 51 determines that the print head 13a is in the normal position, and holds the position of the print head 13a in the width direction of the double-sided bonding film F105.

  FIG. 7B shows a case where the print head 13a is outside the normal position due to meandering of the double-sided bonding film F105. In this case, in the width direction of the double-sided bonding film F105, the first sensor 55a and the second sensor 55b are located outside the boundary B between the polarization region Pa and the blank area Ma of the double-sided bonding film F105. Yes.

  Therefore, in the meandering detection unit 53, the light BL1 emitted from the first light source 54a passes through the blank area Ma and is received by the first sensor 55a. Similarly, the light BL2 emitted from the second light source 54b passes through the blank area Ma and is received by the second sensor 55b. In this case, the received light amount (signal) of the first sensor 55a is large (Hi), and the received light amount (signal) of the second sensor 55b is large (Hi).

  When such a signal is detected, the head operation unit 51 determines that the print head 13a is outside the normal position, and moves the print head 13a to the inside in the width direction of the double-sided bonding film F105. . And when it determines that the print head 13a exists in a normal position from the signal which the meandering detection part 53 detected, the position of the print head 13a in the width direction of the double-sided bonding film F105 is hold | maintained.

  FIG.7 (c) is a case where the print head 13a exists inside a normal position by meandering of the double-sided bonding film F105. In this case, in the width direction of the double-sided bonding film F105, the first sensor 55a and the second sensor 55b are located on the inner side of the boundary B between the polarization region Pa and the blank area Ma of the double-sided bonding film F105. Yes.

  Therefore, in the meandering detection unit 53, the light BL1 emitted from the first light source 54a passes through the polarization region Pa and is received by the first sensor 55a. Similarly, the light BL2 emitted from the second light source 54b passes through the polarization region Pa and is received by the second sensor 55b. In this case, the received light amount (signal) of the first sensor 55a is small (Lo), and the received light amount (signal) of the second sensor 55b is small (Lo).

  When such a signal is detected, the head operation unit 51 determines that the print head 13a is inside the normal position, and moves the print head 13a to the outside in the width direction of the double-sided bonding film F105. . And when it determines that the print head 13a exists in a normal position from the signal which the meandering detection part 53 detected, the position of the print head 13a in the width direction of the double-sided bonding film F105 is hold | maintained.

  The determination that the received light amount (signal) received by the first sensor 55a and the second sensor 55b is different (large or small) can be appropriately selected depending on the configuration of the double-sided bonding film F105. For example, if the received light amounts in the polarization area Pa and the blank area Ma are A (Pa) and A (Ma), a value of {A (Pa) −A (Ma)} / 2 is used as a threshold value. The difference in the amount of received light between the two sensors 55a and 55b is compared. If the difference in the amount of received light is greater than the threshold value, the amount of received light (signal) detected between the two sensors 55a and 55b is different. ) Can be large (Hi) and small can be small (Lo).

  The interval between adjacent ones of the plurality of sensors 55a and 55b is usually set to a range of 1/3 to 1/2 times the width of the recording area S so as to be smaller than the width of the recording area S. . When the distance between the adjacent sensors 55a and 55b is within this range, the print head 13a can be stably held at a position facing the recording area S with respect to the meandering of the double-sided laminated film F105. For example, when the 7 mm × 7 mm two-dimensional code of this embodiment is printed on the recording area S having a width of 10 mm, the interval between the adjacent sensors 55a and 55b can be set to 3 mm to 5 mm.

  The number of sensors to be arranged is usually about 2 to 6, and the larger the number, the more accurately the print head 13a can be held at a position facing the recording area S. On the other hand, if the number of sensors is too large, the meandering detection unit 53 becomes large with respect to the recording area S, and an unnecessary space is created. Therefore, the number of sensors to be arranged is preferably 2 to 4.

  In the printing method of this embodiment, the meandering of the double-sided bonding film F105 is detected by using the printing device 50 described above, and the print head 13a is moved to the recording area S in accordance with the meandering of the detected double-sided bonding film F105. It is possible to print on the recording area S using this print head 13a.

  As described above, in the defect inspection system 10 of the present embodiment, defect information is appropriately recorded (printed) in the recording area S of the double-sided bonding film F105 even when meandering occurs in the double-sided bonding film F105 being conveyed. Is possible. Thereby, in the film manufacturing apparatus 100 of this embodiment, the optical film F10X is cut out from the double-sided bonding film F105 with a high yield while preventing the occurrence of a defect information reading error due to a printing error, and a high-quality optical film F10X is manufactured. Is possible.

  By the way, in the defect inspection system 10 of this embodiment, the double-sided bonding film F105 being transported sometimes fluctuates depending on the state of the double-sided bonding film F105, the conveyance conditions, and the like. In particular, curl is likely to occur at both ends in the width direction of the double-sided bonded film F105 due to moisture absorption or drying conditions of the film, and this curl is considered to be one of the causes of flickering during transportation.

  On the other hand, in the defect inspection system 10 of this embodiment, as shown in FIG. 8, the print head 13a is arrange | positioned facing the 7th guide roll 153c which touches the double-sided bonding film F105 mentioned above.

  Thereby, even when the both ends of the width direction of the double-sided bonding film F105 are fluttered during conveyance, the fluttering of the double-sided bonding film F105 is suppressed at a position in contact with the seventh guide roll 153c. For this reason, in the defect inspection system 10 of this embodiment, it is possible to appropriately record (print) defect information printed by the ink i ejected from the print head 13a in the recording area S of the double-sided bonding film F105. is there.

  Moreover, it is preferable that the double-sided bonding film F105 is applied to the outer peripheral surface of the seventh guide roll 153c within an angle range of 40 ° to 130 ° (hereinafter referred to as a hugging angle θ). In addition, the holding angle said by this invention means what represented the angle range which contacts the outer peripheral surface of the guide roll of a film in the circumferential direction with the center angle of the guide roll.

  When the hugging angle θ is less than 40 °, the double-sided bonded film F105 is easily slipped on the outer peripheral surface of the seventh guide roll 153c. Therefore, in order to prevent the occurrence of scratches and the like due to the sliding of the double-sided laminated film F105, it is preferable that the holding angle θ is set to 40 ° or more. On the other hand, when the holding angle θ exceeds 130 °, for example, air bubbles are easily caught between the second and third films F102 and F103 serving as the surface protective film and the first film F101. Therefore, in order to prevent such bubble entrapment, the holding angle θ is preferably set to 130 ° or less.

  Moreover, when the tension | tensile_strength concerning the double-sided bonding film F105 is low, it is preferable to make holding angle (theta) more than 90 degrees, and it is more preferable to set it as 95 degrees or more. Thereby, the flutter which generate | occur | produces in the double-sided bonding film F105 can be suppressed. On the other hand, when the tension applied to the double-sided laminated film F105 is high, the holding angle θ is preferably less than 90 °, and more preferably 85 ° or less. Thereby, it can prevent that the double-sided bonding film F105 adheres to the outer peripheral surface of the 7th guide roll 153c transiently.

  In addition, about the conveyance speed of the double-sided bonding film F105, it is about 9-50 m / min normally. Moreover, the tension | tensile_strength concerning the double-sided bonding film F105 is about 400-1500N in a drying furnace, and is about 200-500N outside a drying furnace. In addition, as the tension applied to the double-sided bonded film F105 is smaller, fluttering is more likely to occur. The width | variety of the double-sided bonding film F105 is about 500-1500 mm. In addition, it becomes easy to produce flutter, so that the width | variety of the double-sided bonding film F105 becomes large. The thickness of the double-sided bonding film F105 is about 10 to 300 μm. In addition, as the thickness of the double-sided bonded film F105 becomes thinner, fluttering easily occurs.

  The outer diameter of the seventh guide roll 153c is preferably in the range of 100 to 150 mm. When the outer diameter of the seventh guide roll 153c increases, the area of the double-sided bonding film F105 that comes into contact with the outer peripheral surface of the seventh guide roll 153c with respect to the holding angle θ increases. For this reason, the flutter which generate | occur | produces in the double-sided bonding film F105 can be suppressed, and the recording area S can be stabilized more. However, when the outer diameter of the seventh guide roll 153c is increased, the above-described range is preferable because the above-described scratches and air bubbles tend to occur.

  Moreover, the higher the roundness of the seventh guide roll 153c, the more the recording area S can be stabilized by suppressing the vibration of the double-sided bonding film F105 that contacts the seventh guide roll 153c. Specifically, the roundness of the seventh guide roll 153c is preferably 1.0 mm or less, and more preferably 0.5 mm or less.

  Further, the surface roughness (maximum roughness Ry) on the outer peripheral surface of the seventh guide roll 153c is preferably 100 s or less, and more preferably 25 s or less. Thereby, generation | occurrence | production of the abrasion mentioned above and the biting of a bubble can be suppressed.

  Moreover, in the defect inspection system 10 of this embodiment, in order to suppress the flutter which generate | occur | produces in the double-sided bonding film F105 also in the upstream and downstream side of the 7th guide roll 153c, the guide roll which contact | connects the double-sided bonding film F105 is used. It is possible to add. In this case, it is preferable that the distance between the guide roll to be added and the seventh guide roll 153c is 1000 mm or less. Moreover, it is also possible to give the holding angle to the double-sided bonding film F105 with respect to the guide roll to be added. The holding angle is preferably given to the guide roll added on the upstream side, and more preferably given to the guide roll added on the upstream side and the downstream side.

  As described above, in the defect inspection system 10 of the present embodiment, it is possible to reduce the influence due to the flutter generated in the double-sided bonding film F105 being conveyed, and to appropriately record (print) defect information on the double-sided bonding film F105. Is possible. Thereby, in the film manufacturing apparatus 100 of this embodiment, the optical film F10X is cut out from the double-sided bonding film F105 with a high yield while preventing the occurrence of a defect information reading error due to a printing error, and a high-quality optical film F10X is manufactured. Is possible.

  In the recording apparatus 13 in the present embodiment, as shown in FIGS. 9A to 9C, a cover 30 that prevents the ink i from adhering to at least an area inside the recording area S of the double-sided bonded film F105. Is provided. In addition, Fig.9 (a) is the top view which looked at the cover 30 from the upper side of the double-sided bonding film F105, FIG.9 (b) shows the cover 30 from the upstream of the conveyance direction of the double-sided bonding film F105. FIG. 9C is a side view of the cover 30 viewed from the outside of the double-sided bonding film F105.

  Specifically, the cover 30 includes a first side plate portion 30a that covers a side facing the inside of the double-sided bonding film F105 in the space K where the double-sided bonding film F105 and the print head 13a face each other, and double-sided bonding. It has the 2nd side plate part 30b which covers the side facing the upstream of the conveyance direction of the composite film F105, and the 3rd side plate part 30c which covers the side facing the downstream of the conveyance direction of the double-sided bonding film F105. ing.

  The cover 30 is detachably attached to the print head 13a using means such as screws. Since the cover 30 is open on the side facing the outside of the double-sided bonded film F105 in the space K, the cover 30 can be easily attached to and detached from the print head 13a.

  As for the cover 30, it is preferable that the space | interval T between the surface facing the double-sided bonding film F105 and the surface of the double-sided bonding film F105 is 1 mm or less. By setting the interval T to 1 mm or less, it is possible to prevent the scattered matter of the ink i from being scattered outside the cover 30 when the ink i ejected from the print head 13a is scattered around.

  As the scattered matter of the ink i, among the ink i ejected from the print head 13, for example, the ink i that is scattered from the information recording position and scattered around the ink i, or the ink that is scattered around after adhering to the double-sided bonding film F105 i.

  Of the three side plate portions 30a, 30b, 30c constituting the cover 30, the first side plate portion 30a prevents the scattered matter of the ink i from adhering to the region overlapping the display region P4 of the double-sided bonding film F105. ing. On the other hand, the 2nd side board part 30b is preventing that the scattered matter of the ink i adheres to the upstream of the conveyance direction of the double-sided bonding film F105. On the other hand, the 3rd side board part 30c is preventing that the scattered matter of the ink i adheres to the downstream of the conveyance direction of the double-sided bonding film F105.

  The scattered matter of the ink i adheres to the inner surface of the cover 30. Accordingly, the cover 30 can be periodically removed from the print head 13a, cleaned, and then attached to the print head 13a again and used repeatedly.

  Moreover, it is preferable that the film manufacturing apparatus 100 is equipped with the static electricity removal apparatus 40 which neutralizes the surface of the double-sided bonding film F105. The static eliminating device 40 is called an ionizer, and is disposed upstream of the recording device 13 (print head 13a) in the transport direction of the double-sided bonded film F105. And this static electricity removal apparatus 40 removes the static electricity which generate | occur | produced on the surface of the double-sided bonding film F105 by spraying the ionized gas over the whole area of the width direction of the double-sided bonding film F105.

  Thereby, in the film manufacturing apparatus 100, the scattered matter of the ink i is prevented from being drawn to the surface of the double-sided bonding film F105 by static electricity. Therefore, in the film manufacturing apparatus 100, it is possible to further suppress the scattered matter of the ink i from adhering to the surface of the double-sided bonding film F105 by combining the cover 30 and the static eliminator 40 described above.

  As described above, in the defect inspection system 10 according to the present embodiment, it is possible to prevent the double-sided bonding film F105 from being contaminated by the scattering of the ink i when the defect information is recorded on the double-sided bonding film F105.

  In addition, this invention is not necessarily limited to the thing of the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.

  Specifically, the printing device 50 is not limited to the configuration using the two light sources 54a and 54b and the two sensors 55a and 55b described above, and the number of light sources and sensors can be changed as appropriate. Specifically, when the number of sensors is increased to three or more, it is possible to detect the degree of meandering of the double-sided bonded film F105 more finely.

  That is, by detecting a signal different between at least one adjacent sensor and the other sensor among the plurality of sensors, the polarizing region of the double-sided bonding film F105 is detected between the one sensor and the other sensor. It is possible to detect that the boundary B between Pa and the margin area Ma is located. In accordance with this, it is possible to move the print head 13 a to a position facing the recording area S by the head operation unit 51.

  On the other hand, the light sources are not limited to the configuration in which the same number of light sources as the above-described sensors are arranged, and a smaller number of light sources than the sensors can be arranged. Further, it may be a single light source that emits light corresponding to a plurality of sensors, such as a surface emitting source. Furthermore, about a sensor, not only the type which detects the transmitted light from the double-sided bonding film F105 but the type which detects the reflected light from the double-sided bonding film F105 may be sufficient.

  Moreover, in the said printing apparatus 50, although it has the structure which moves the print head 13a with respect to the double-sided bonding film F105, by moving and operating the double-sided bonding film F105 with respect to the print head 13a in the width direction. The print head 13 may be relatively moved to a position facing the recording area S.

  In addition, the cover 30 may have a configuration in which at least the first side plate portion 30a is arranged among the three side plate portions 30a, 30b, and 30c. Thereby, the scattered matter of the ink i can be prevented from adhering to the area overlapping the display area P4 of the double-sided bonded film F105.

  Moreover, about the said cover 30, as shown in FIG. 10, the 4th side plate part 30d which covers the side which faces the outer side of the double-sided bonding film F105 other than said three side plate part 30a, 30b, 30c is arrange | positioned. It is also possible to adopt the configuration described above.

  Further, with respect to the recording device 13, for example, as shown in FIGS. 11A and 11B, the lower end portion of the cover 31 attached to the print head 13 a may be shaped along the outer shape of the guide roll 41. Thereby, the space | interval T between the surfaces of the double-sided bonding film F105 can be 1 mm or less.

  Further, as another embodiment of the present invention, for example, a cover 32 as shown in FIGS. 12A and 12B can be used. This cover 32 consists of a parallel plate-shaped board | plate material, and is arrange | positioned facing the double-sided bonding film F105 in the state which adjoined the double-sided bonding film F105. Further, a window (opening) 32 a is provided at a position facing the recording area S of the cover 32. In the case of this configuration, the cover 32 covers an area other than the recording area S, so that contamination of the double-sided adhesive film F105 due to scattering of ink i when recording defect information on the double-sided adhesive film F105 can be prevented. It is. Further, the cover 32 may be provided with the above-described side plate portions 30a, 30b, 30c, and 30d. That is, the cover 32 may constitute a bottom plate portion that covers the bottom surface of the cover 30.

  Further, the recording device 13 has a configuration arranged on the downstream side of the second defect inspection device 12, but can also be arranged on the downstream side of the first defect inspection device 11. In this case, it is possible to record defect information by the recording device 13 after performing the defect inspection by the first defect inspection device 11.

  Further, the recording device 13 is not limited to one that records defect information after the above-described defect inspection. For example, in a long-distance conveyance line, a plurality of recording devices may be arranged, distance information may be recorded at fixed distances, and distance correction may be performed based on the recorded distance information. A recording apparatus that records such distance information may be disposed, for example, on the upstream side of the first defect inspection apparatus 11.

  The film to which the present invention is applied is not necessarily limited to the optical film such as the polarizing film, the retardation film, and the brightness enhancement film described above, and the present invention is applied to a film on which recording by the recording device 13 is performed. Can be widely applied.

  Further, the present invention can be widely applied to non-contact type printing apparatuses and printing methods such as a laser system in addition to the above-described ink jet system. In particular, in the ink jet system, ink mist is likely to occur. Therefore, if the optical film flutters, a printing error is likely to occur due to the influence. In addition, the defect information is also easily affected by the fluttering of the optical film when complex information such as the above-described two-dimensional code is printed by the ink jet method.

DESCRIPTION OF SYMBOLS 100 ... Film manufacturing apparatus 101 ... 1st conveyance line 102 ... 2nd conveyance line 103 ... 3rd conveyance line 104 ... 4th conveyance line 105 ... 5th conveyance line 106 ... Winding part 111a, 111b ... 1st 1 nip roll 112 ... 1st accumulator 112a, 112b ... 1st dancer roll 113 ... 1st guide roll 121a, 121b ... 2nd nip roll 122 ... 2nd accumulator 122a, 122b ... 2nd dancer roll 123a, 123b ... second guide rolls 131a, 131b ... third nip rolls 141a, 141b ... fourth nip rolls 142 ... third accumulators 142a, 142b ... third dancer rolls 143a, 143b ... fourth guide rolls 151a, 151b ... fifth Nip roll 152 ... fourth accumulator 152a, 152b ... fourth dancer roll 153a ... fifth guide roll 153b ... sixth guide roll 153c ... seventh guide roll 10 ... defect inspection system 11 ... first defect inspection Device 12 ... Second defect inspection device 13 ... Recording device 13a ... Print head 14 ... First length measuring device 15 ... Second length measuring device 16 ... Control device 21a, 22a, 23a, 24a, 25a ... Lighting unit 21b , 22b, 23b, 24b, 25b... Light detection section 30... Cover 30a... First side plate section 30b... Second side plate section 30c... Third side plate section 30d. ... Window 40 ... Static eliminator 50 ... Printer 51 ... Head operation part 52 ... Support frame 53 ... Meander detector 54a ... First light source 5 4b ... 2nd light source 55a ... 1st sensor 55b ... 2nd sensor P ... Liquid crystal display panel (optical display device) F1X ... Optical film F10X ... Optical film F101 ... 1st film F102 ... 2nd film F103 ... 3rd film F104 ... Single-sided adhesive film F105 ... Double-sided adhesive film

Claims (8)

A transport line for transporting a long belt-shaped film;
A defect inspection apparatus for inspecting defects of the film conveyed in the conveyance line;
A recording device for recording defect information based on the result of the defect inspection on a film conveyed by the conveyance line, and
The recording apparatus includes: a print head that prints the defect information in a recording area along an edge of the film; a meander detection unit that detects meandering of the film; and the print head relative to the film. A head operation unit that is operated to move in a direction that intersects the conveyance direction of the film,
A defect inspection system in which the head operating unit moves the print head to a position facing the recording area in accordance with the meandering of the film detected by the meandering detection unit. The meandering detection unit has a plurality of sensors arranged side by side in a direction intersecting with the conveyance direction of the film,
2. The defect inspection system according to claim 1, wherein the plurality of sensors are moved and operated in a direction intersecting a transport direction of the film integrally with the print head by the head operation unit.   The different signals are detected between at least one of the plurality of sensors and the other sensor when the print head is at a position facing the recording area. 2. The defect inspection system according to 2.   The meandering detection unit includes at least one or more light sources that emit light toward the film, and a plurality of light receiving elements that are arranged to face the light sources with the film interposed therebetween as the sensor. The defect inspection system according to claim 2 or 3, wherein   A film manufacturing apparatus provided with the defect inspection system as described in any one of Claims 1-4.   The film manufacturing method including the process of defect-inspecting using the defect inspection system as described in any one of Claims 1-4. A printing device that performs printing on a recording area along an edge of the film while conveying a long belt-shaped film,
A print head for printing on the film;
A meandering detector for detecting meandering of the film;
A head operation unit that operates to move the print head relative to the film in a direction that intersects the film conveyance direction;
In accordance with the meandering of the film detected by the meandering detection unit, the head operating unit moves the printhead to a position facing the recording area. A printing method for performing printing on a recording area along an edge of the film using a print head while conveying a long belt-shaped film,
Detecting the meandering of the film;
In accordance with the detected meandering of the film, the step of moving the print head relative to the film to a position facing the recording area;
And a step of printing on the recording area using the print head.

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