KR102438892B1 - Defect inspection system, film manufacturing apparatus, film manufacturing method, printing apparatus and printing method - Google Patents

Abstract

[Problem] To provide a defect inspection system capable of properly recording defect information on a film by reducing the influence of fluctuations occurring on the film being conveyed.
[Solution] A conveying line conveying a long strip-shaped film, a defect inspection apparatus for inspecting defects of the film conveyed by the conveying line, and defect information based on the defect inspection result to the film F105 conveyed by the conveying line A recording apparatus 13 for recording is provided, wherein the recording apparatus 13 has a printing head 13a for printing defect information by discharging ink i into a recording area along the edge of the film F105, (13a) is arrange|positioned facing the guide roll 153c which contact|connects the film F105.

Description

DEFECT INSPECTION SYSTEM, FILM MANUFACTURING APPARATUS, FILM MANUFACTURING METHOD, PRINTING APPARATUS AND PRINTING METHOD

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, optical films, such as a polarizing plate, after test|inspecting defects, such as a foreign material defect and an uneven|corrugated defect, are wound around a core material. Information (hereinafter, referred to as defect information) regarding the position and type of a defect is recorded on the optical film by printing a barcode on the edge of the optical film or marking the defect site. When the amount of winding reaches a fixed amount, the optical film wound up by the core material will be cut out from an upstream optical film and shipped as a raw material roll. For example, in patent document 1, the defect inspection system provided with the defect inspection apparatus and the recording apparatus which records defect information to a film on the conveyance line of an optical film is disclosed.

Patent Document 1: Japanese Patent Laid-Open No. 2011-7779

By the way, in the defect inspection system mentioned above, when recording defect information on an optical film, the fluctuation|fluctuation may arise in the optical film being conveyed according to the state of an optical film, conveyance conditions, etc. When such fluctuations occur in the optical film, defect information printed by the ink ejected from the printing head is not clearly recorded in the recording area along the edge of the optical film, and there is a risk that it will become unclear (printing error). there is

The present invention has been proposed in view of such a conventional situation, and a defect inspection system, a film manufacturing apparatus, a film manufacturing method, and a print that reduce the influence of fluctuations occurring on the film being conveyed so that defect information can be properly recorded on the film. It aims to provide an apparatus and a printing method.

As a means for solving the above problem, according to an aspect of the present invention, a conveying line for conveying a long strip-shaped film, a defect inspection apparatus for inspecting defects of the film conveyed by the conveying line, and the defect inspection result a recording apparatus for recording based defect information on a film conveyed to the conveying line, wherein the recording apparatus has a printing head for printing the defect information in a recording area along an edge of the film, wherein the printing head is configured to print the defect information on the film It is disposed opposite to the guide roll in contact with the film, there is provided a defect inspection system, characterized in that the printing is performed at the opposite position from the position in contact with the guide roll of the film.

Moreover, in the defect inspection system of the said aspect, the structure in which the said film is hung on the outer peripheral surface of the said guide roll in the angle range of 40 degrees - 130 degrees may be sufficient.

Moreover, in the defect inspection system of the said aspect, the structure which prints the said defect information by the said printing head ejecting ink to the recording area|region of the said film may be sufficient.

Moreover, in the defect inspection system of the said aspect, the structure which has the said recording apparatus having the cover which prevents ink from adhering to the area|region inside at least the said recording area|region of the said film may be sufficient.

Moreover, in the defect inspection system of the said aspect, the structure provided with the static electricity removal apparatus which is located in the upstream of the said recording apparatus in the conveyance direction of the said film, and removes static electricity from the surface of the said film may be sufficient.

Moreover, according to an aspect of this invention, the film manufacturing apparatus provided with any one of the defect inspection systems mentioned above is provided.

In addition, according to an aspect of the present invention, there is provided a film manufacturing method comprising the step of inspecting a defect using any one of the defect inspection system.

Further, according to an aspect of the present invention, a printing head for printing information on the film is provided while conveying the elongated strip-shaped film, wherein the printing head is disposed opposite to a guide roll in contact with the film, There is provided a printing device characterized in that the printing is performed at the opposite side of the position in contact with the guide roll of the film.

Further, according to an aspect of the present invention, the method includes a step of printing information on the film using a printing head while conveying the long strip-shaped film, and placing the printing head on a guide roll in contact with the film. There is provided a printing method, characterized in that the printing is performed at a position opposite to the position in contact with the guide roll of the film.

As described above, according to the aspect of the present invention, a defect inspection system, a film manufacturing apparatus, a film manufacturing method, a printing apparatus, and a printing apparatus which reduce the influence of the fluctuation|fluctuation which arises on the film in conveyance and make it possible to record defect information on the film appropriately. method can be provided.

1 is a plan view showing an example of a liquid crystal display panel.
FIG. 2 is a cross-sectional view of the liquid crystal display panel shown in FIG. 1 .
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.
5 is a side view showing an example of a recording apparatus.
Fig. 6 shows an example of a cover, (a) is a plan view seen from the upper side of the film, (b) is a side view seen from the upstream side of the film, and (c) is a side view seen from the outside of the film.
7 is a plan view showing a modified example of the cover.
Fig. 8 shows a modified example of the cover, (a) is a perspective view thereof, (b) is a side view thereof.
Fig. 9 shows another embodiment of the cover, (a) its top view, (b) its side view.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail with reference to drawings.

In this embodiment, as a production system of an optical display device, the film manufacturing apparatus which comprises the part, and the film manufacturing method using this film manufacturing apparatus are demonstrated.

A film manufacturing apparatus is, for example, a film type optical member (optical display panel) bonded to a panel type optical display component (optical display panel) such as a liquid crystal display panel or an organic EL display panel, such as a polarizing film, a retardation film, or a luminance enhancing film. film) is produced. A film manufacturing apparatus constitutes a part of the production system which produces the optical display apparatus containing such an optical display component or an optical member.

In this embodiment, a transmissive liquid crystal display device is exemplified as an optical display device. A transmissive liquid crystal display device is generally provided with a liquid crystal display panel and a backlight. In this liquid crystal display device, an image can be displayed by injecting the illumination light emitted from the backlight from the back side of the liquid crystal display panel, and emitting the light modulated by the liquid crystal display panel from the front side of the liquid crystal display panel.

(optical display device)

First, the structure of the liquid crystal display panel P shown in FIGS. 1 and 2 as an optical display device is demonstrated. Here, FIG. 1 is a plan view showing the configuration of the liquid crystal display panel P. As shown in FIG. FIG. 2 is a cross-sectional view of the liquid crystal display panel P taken along the cut line A-A shown in FIG. 1 . In addition, illustration of hatching which shows a cross section is abbreviate|omitted in FIG.

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 , and a first substrate ( A liquid crystal layer P3 disposed between P1) and the second substrate P2 is generally provided.

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

On the back surface (backlight side) of liquid crystal display panel P, the 1st optical film F11 as a polarizing film is bonded. On the surface (display surface side) of liquid crystal display panel P, the 2nd optical film F12 as a polarizing film, and the 3rd optical film F13 as a luminance improvement film superimposed on this 2nd optical film F12 are bonded. . Hereinafter, the 1st, 2nd, and 3rd optical films F11, F12, F13 may be called optical film F1X generically.

(optical film)

Next, an example of the optical sheet FX which comprises the optical film F1X shown in FIG. 3 is demonstrated. Here, FIG. 3 is sectional drawing which shows the structure of the optical sheet FX. In addition, illustration of hatching which shows a cross section is abbreviate|omitted in FIG.

The optical film F1X is obtained by cutting out the sheet piece of predetermined length from the elongate strip|belt-shaped optical sheet FX shown in FIG. Specifically, this optical sheet FX is a base material sheet through the base material sheet F4, the adhesion layer F5 provided on one surface (upper surface in FIG. 3) of the base material sheet F4, and the adhesion layer F5. It has the separator sheet F6 provided in one surface of (F4), and the surface protection sheet F7 provided in the other surface (lower surface in FIG. 3) of the base material sheet F4.

The base material sheet F4 has a structure in which a pair of protective films F4b and F4c sandwiches the polarizer F4a, for example in the case of a polarizing film. The adhesion layer F5 adheres a sheet piece (optical film F1X) to liquid crystal display panel P. The separator sheet F6 protects the adhesion layer F5, and before bonding a sheet piece (optical film F1X) to liquid crystal display panel P, it peels from the adhesion layer F5. Hereinafter, the part except 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 after the sheet piece (optical film F1X) is adhered to the liquid crystal display panel P, the sheet piece (optical film F1X) of peeled from the surface.

In addition, regarding the base material sheet F4, it is good also as a structure which abbreviate|omitted either one of a pair of protective film F4b, F4c. For example, the protective film F4b on the side of the adhesion layer F5 is abbreviate|omitted, and it can be set as the structure in which the adhesion layer F5 was directly formed in the polarizer F4a. In addition, the protective film F4c on the surface protection sheet F7 side is subjected to, for example, a hard coat treatment to protect the outermost surface of the liquid crystal display panel P, or an anti-glare treatment to obtain an anti-glare effect. It may be implemented. In addition, regarding the base material sheet F4, it is not limited to what became the laminated structure mentioned above, What became a single|monolayer structure may be sufficient. In addition, you may abbreviate|omit about the surface protection sheet F7.

(Film manufacturing apparatus and film manufacturing method)

Next, the film manufacturing apparatus 100 shown in FIG. 4 is demonstrated. Here, FIG. 4 is a side view which shows the structure of the film manufacturing apparatus 100. As shown in FIG.

The film manufacturing apparatus 100 is, as shown in FIG. 4, for example, the long strip|belt-shaped 2nd film F102 used as a surface protection film on one side of the long strip|belt-shaped 1st film F101 used as a polarizing film. ), the second film F102 on both surfaces of the first film F101 by bonding a third long strip-shaped film F103 serving as a surface protection film to the other surface of the first film F101. and manufacturing the optical film F10X to which the third film F103 is bonded.

Specifically, the film manufacturing apparatus 100 includes a first conveyance line 101 , a second conveyance line 102 , a third conveyance line 103 , a fourth conveyance line 104 , and a fifth conveyance line 105 . and a winding portion 106 are provided.

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

The first conveyance line 101 performs dyeing treatment, crosslinking treatment, stretching treatment, etc. with respect to a film serving as a base material of a polarizer, such as PVA (polyvinyl alcohol), for example, and thereafter, TAC (triacetyl cellulose) or the like on both surfaces thereof. It is conveyed toward the 3rd conveyance line 103 of the long strip|belt-shaped 1st film F101 obtained by bonding a protective film.

Specifically, in this 1st conveyance line 101, from the one side which pinched|interposed the upstream of the 3rd conveyance line 103 toward the 3rd conveyance line 103, a pair of 1st nip rolls 111a, 111b And the 1st accumulator 112 which contains the some 1st dancer roll 112a, 112b, and the 1st guide roll 113 are arrange|positioned one after another in a horizontal direction.

A pair of 1st nip rolls 111a, 111b rotates in mutually reverse directions, pinching|interposing the 1st optical film F101 between them, In the arrow direction (right direction) shown in FIG. 4, the 1st optical film F101 ) to extract.

The first accumulator 112 is for absorbing a difference due to a change in the feed amount of the first film F101 and reducing a change in tension applied to the first film F101 . Specifically, the first accumulator 112 is located between the first nip rolls 111a and 111b and the first guide roll 113, a plurality of dancer rolls 112a positioned on the upper side and the lower side. The plurality of dancer rolls 112b have a configuration in which they are alternately arranged side by side.

In the first accumulator 112 , the first optical film F101 is alternately hung on the dancer roll 112a on the upper side and the dancer roll 112b on the lower side while conveying the first optical film F101 while conveying the upper part The dancer roll 112a on the side and the dancer roll 112b on the lower side are moved up and down relatively in the vertical direction. Thereby, it is becoming possible to accumulate|store the 1st film F101, without stopping the 1st conveyance line 101. For example, in the first accumulator 112, the accumulation of the first film F101 is increased by increasing the distance between the dancer roll 112a on the upper side and the dancer roll 112b on the lower side, while the dancer roll on the upper side The accumulation of the first film F101 can be reduced by narrowing the distance between the 112a and the dancer roll 112b on the lower side. The 1st accumulator 112 is operated at the time of work, such as splicing, after replacing|exchanging the core material of fabric roll R1-R3, for example.

The 1st guide roll 113 guides the 1st optical film F101 drawn out by 1st nip rolls 111a, 111b toward the upstream of the 3rd conveyance line 103, rotating. In addition, the 1st guide roll 113 is not limited to the structure in which only one was arrange|positioned, The structure arrange|positioned may be sufficient.

The 2nd conveyance line 102 unwinds the long strip|belt-shaped 2nd film F102 which becomes a surface protection film, such as PET (polyethylene terephthalate) from the 1st raw material roll R1, for example, The 3rd conveyance line 103 ) to return it.

Specifically, in this 2nd conveyance line 102, from the other side which sandwiched the upstream of the 3rd conveyance line 103 toward the 3rd conveyance line 103, a pair of 2nd nip rolls 121a, 121b And the 2nd accumulator 122 containing the some 2nd dancer rolls 122a, 122b, and the some 2nd guide rolls 123a, 123b are arrange|positioned one after another in a horizontal direction.

A pair of 2nd nip rolls 121a, 121b rotates in mutually reverse directions, pinching|interposing the 2nd optical film F102 between them, In the arrow direction (left direction) shown in FIG. 4 2nd optical film F102 ) to extract.

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 includes a plurality of dancer rolls 122a positioned on the upper side between the first nip rolls 121a and 121b and the second guide roll 123a, and a plurality of the plurality of dancer rolls 122a positioned on the lower side. It has a configuration in which the dancer rolls 122b are alternately arranged side by side.

In the second accumulator 122, the second optical film F102 is alternately hung on the dancer roll 122a on the upper side and the dancer roll 122b on the lower side while conveying the second optical film F102 while conveying the upper part The dancer roll 122a on the side and the dancer roll 122b on the lower side are relatively moved up and down in the vertical direction. Thereby, it is becoming possible to accumulate|store the 2nd film F102, without stopping the 2nd conveyance line 102. As shown in FIG. For example, in the second accumulator 122, the accumulation of the second film F102 is increased by increasing the distance between the dancer roll 122a on the upper side and the dancer roll 122b on the lower side, while the dancer roll on the upper side Accumulation of the 2nd film F102 can be reduced by narrowing the distance between (122a) and the dancer roll 122b of the lower side. The 2nd accumulator 122 is operated at the time of work, such as splicing, after replacing|exchanging the core material of fabric roll R1-R3, for example.

Some 2nd guide rolls 123a, 123b guide the 2nd optical film F102 drawn out by 2nd nip rolls 121a, 121b toward the upstream of the 3rd conveyance line 103 while rotating, respectively. will be. In addition, the 2nd guide roll 123a, 123b is not limited to the structure arrange|positioned in multiple numbers, The structure arrange|positioned may be sufficient as only one.

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

Concretely, a pair of 3rd nip rolls 131a, 131b is arrange|positioned in this 3rd conveyance line 103. As shown in FIG. A pair of 3rd nip rolls 131a, 131b is located at the junction of the downstream of the 1st conveyance line 101, and the downstream of the 2nd conveyance line 102, The 1st optical film F101 in between And the arrow direction (downward direction) which shows the single-sided bonding film F104 which bonded the 1st film F101 and the 2nd film F102 in FIG. 4 by rotating in mutually reverse directions while pinching|interposing the 2nd optical film F102. will be withdrawn to

The 4th conveyance line 104 unwinds the long strip|belt-shaped 3rd film F103 which becomes a surface protection film, such as PET (polyethylene terephthalate) from the 2nd raw material roll R2, for example, The 5th conveyance line 105 ) to return it.

Specifically, in this 4th conveyance line 104, from the one side which pinched|interposed the downstream of the 3rd conveyance line 103 toward the 3rd conveyance line 103, a pair of 4th nip roll 141a, 141b And the 3rd accumulator 142 which contains the some 3rd dancer roll 142a, 142b, and the some 4th guide roll 143a, 143b are arrange|positioned one by one in a horizontal direction.

A pair of 4th nip rolls 141a, 141b rotates in mutually reverse directions, pinching|interposing the 3rd optical film F103 between them, and 3rd optical film F103 in the arrow direction (right direction) shown in FIG. ) to extract.

The third accumulator 142 is for absorbing the difference due to the fluctuation of the feed amount of the third film F103 and reducing the fluctuation of 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 between the fourth nip rolls 141a and 141b and the fourth guide roll 143a, and a plurality of positions positioned on the lower side. It has a configuration in which the dancer rolls 142b are alternately arranged side by side.

In the third accumulator 142 , the third optical film F103 is alternately hung on the dancer roll 142a on the upper side and the dancer roll 142b on the lower side while conveying the third optical film F103 while conveying the upper part The dancer roll 142a on the side and the dancer roll 142b on the lower side are relatively moved up and down in the vertical direction. Thereby, it is becoming possible to accumulate|store the 3rd film F103, without stopping the 4th conveyance line 104. For example, in the third accumulator 142, the accumulation of the third film F103 is increased by increasing the distance between the dancer roll 142a on the upper side and the dancer roll 142b on the lower side, while the dancer roll on the upper side The accumulation of the third film F103 can be reduced by narrowing the distance between the 142a and the dancer roll 142b on the lower side. The 3rd accumulator 142 is operated at the time of work, such as splicing, after replacing|exchanging the core material of the fabric rolls R1-R3, for example.

The some 4th guide roll 143a, 143b is the downstream of the 3rd conveyance line 103 (5th) for the 3rd optical film F103 pulled out by 4th nip roll 141a, 141b, respectively rotating, respectively. It guides toward the upstream side of the conveyance line 105). In addition, the 4th guide roll 143a, 143b is not limited to the structure arrange|positioned in multiple numbers, The structure arrange|positioned may be sufficient as only one.

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

Specifically, in this 5th conveyance line 105, from the other side which sandwiched the downstream of the 3rd conveyance line 103 toward 3rd fabric roll R3, a pair of 5th nip roll 151a, 151b And, a fourth accumulator 152 including a fifth guide roll 153a, a pair of sixth nip rolls 151c and 151d, and a plurality of fourth dancer rolls 152a and 152b, and a sixth guide The rolls 153b are arranged one after another in the horizontal direction.

A pair of 5th nip rolls 151a, 151b is located at the junction of the downstream of the 3rd conveyance line 103, and the upstream of the 5th conveyance line 105, Between the single-sided bonding film F104 and The arrow direction (downward direction) which shows the double-sided bonding film F105 which bonded the single-sided bonding film F104 and the 3rd optical film F103 by mutually reverse direction sandwiching the 3rd optical film F103 in FIG. will be withdrawn to

The 5th guide roll 153a guides the double-sided bonding film F105 drawn out by 5th nip rolls 151a, 151b toward the 4th accumulator 152, rotating. In addition, the 5th guide roll 153a is not limited to the structure in which only one was arrange|positioned, The structure arrange|positioned may be sufficient.

A pair of 6th nip rolls 151c, 151d rotate in mutually reverse directions, pinching|interposing the double-sided bonding film F105 between them, and it is double-sided bonding optical film F105 in the arrow direction (right direction) shown in FIG. is to extract

In the fourth accumulator 152, the double-sided bonding film F105 is alternately hung on the upper side dancer roll 152a and the lower side dancer roll 152b while conveying the double-sided bonding film F105 while conveying the upper side The dancer roll 152a and the dancer roll 152b on the lower side are relatively moved up and down in the vertical direction. Thereby, it is becoming possible to accumulate|store the double-sided bonding film F105, without stopping the 5th conveyance line 105. For example, in the 4th accumulator 152, the accumulation|storage of the double-sided bonding film F105 is increased by widening the distance between the dancer roll 152a of the upper side and the dancer roll 152b of the lower side, while the upper side dancer roll Accumulation of the double-sided bonding film F105 can be reduced by narrowing the distance between (152a) and the dancer roll 152b of the lower side. The 4th accumulator 152 is operated at the time of work, such as splicing, after replacing|exchanging the core material of the fabric rolls R1-R3, for example.

The 6th guide roll 153b guides the double-sided bonding film F105 toward 3rd original roll R3. In addition, the 6th guide roll 153b is not limited to the structure in which only one was arrange|positioned, The structure arrange|positioned in multiple numbers may be sufficient.

After the double-sided bonding film F105 is wound up by the core material as 3rd raw material roll R3 of the optical film F10X in the winding-up part 106, it is sent to the next process.

(defect inspection system)

Next, the defect inspection system 10 with which the said film manufacturing apparatus 100 is equipped is demonstrated.

As shown in FIG. 4, the defect inspection system 10 includes a conveyance line L, a first defect inspection apparatus 11 and a second defect inspection apparatus 12, a recording apparatus 13, and a second A first length lengthening device 14 , a second length lengthening device 15 , and a control device 16 are schematically provided.

The conveyance line L forms a conveyance path which conveys the film used as an inspection object, and in this embodiment, to the said 1st conveyance line 101, the 3rd conveyance line 103, and the 5th conveyance line 105. The conveyance line L is comprised by this.

The 1st defect inspection apparatus 11 inspects the defect of the 1st optical film F101 before the 2nd optical film F102 and the 3rd optical film F103 are bonded. Concretely, this 1st defect inspection apparatus 11 detects various defects, such as a foreign material defect, uneven|corrugated defect, and a bright spot defect which occurred when manufacturing the 1st film F101, or conveying the 1st film F101. . With respect to the 1st film F101 conveyed by the 1st conveyance line 101, the 1st defect inspection apparatus 11 carries out, for example, inspection processing, such as a reflection inspection, a transmission inspection, an oblique transmission inspection, an orthogonal Nicol transmission inspection. The defect of the 1st film F101 is detected by carrying out.

The 1st defect inspection apparatus 11 irradiates illumination light to the 1st film F101 to an upstream rather than 1st nip roll 111a, 111b in the 1st conveyance line 101 The some illumination part 21a, 22a, 23a) and a plurality of photodetectors 21b, 22b, 23b for detecting light transmitted through the first film F101 (transmitted light) or light reflected from the first film F101 (reflected light). .

In the present embodiment, for the configuration of detecting transmitted light, a plurality of illumination units 21a, 22a, 23a and photodetection units 21b, 22b, 23b arranged in parallel in the conveyance direction of the first film F101 are each formed in the first film ( F101) is disposed to face each other. In addition, in the 1st defect inspection apparatus 11, it is not limited to the structure which detects such transmitted light, The structure which detects reflected light, or the structure which detects transmitted light and reflected light may be sufficient.

Illumination parts 21a, 22a, 23a irradiate the 1st film F101 with the illumination light to which the light intensity, wavelength, polarization state, etc. were adjusted according to the kind of defect inspection. The photodetectors 21b, 22b, and 23b use an imaging device such as a CCD to image an image of a position where the illumination light of the first film F101 is irradiated. The images (defect inspection results) captured by the photodetectors 21b, 22b, and 23b are output to the control device 16 .

The 2nd defect inspection apparatus 12 inspects the defect of the 1st optical film F101 after the 2nd optical film F102 and the 3rd optical film F103 were bonded, ie, the double-sided bonding film F105. . Specifically, when this 2nd defect inspection apparatus 12 bonds the 2nd film F102 and the 3rd film F103 to the 1st film F101, or the single-sided bonding film F104 and the double-sided bonding film F105, Detects various defects such as foreign material defects, uneven defects, and bright spot defects that occurred during transport. With respect to the double-sided bonding film F105 conveyed by the 1st conveyance line 101, the 2nd defect inspection apparatus 12 performs, for example, inspection processing, such as a reflection inspection, a transmission inspection, an oblique transmission inspection, and an orthogonal Nicole transmission inspection. By carrying out, the defect of the double-sided bonding film F105 is detected.

The 2nd defect inspection apparatus 12 irradiates illumination light to the double-sided bonding film F105 on the downstream side rather than the 5th nip roll 151a, 151b in the 5th conveyance line 105, the some illumination part 24a, 25a) and a plurality of photodetectors 24b and 25b for detecting light (transmitted light) transmitted through the double-sided bonding film F105 or light (reflected light) reflected from the double-sided bonding film F105.

In this embodiment, for the structure which detects transmitted light, some illumination part 24a, 25a and photodetection part 24b, 25b which were parallel in the conveyance direction of the double-sided bonding film F105 are respectively between the double-sided bonding film F105. placed opposite to each other. In addition, in the 2nd defect inspection apparatus 12, it is not limited to the structure which detects such transmitted light, The structure which detects reflected light, or the structure which detects transmitted light and reflected light may be sufficient.

Illumination parts 24a, 25a irradiate the double-sided bonding film F105 with the illumination light to which the light intensity, wavelength, polarization state, etc. were adjusted according to the kind of defect inspection. The photodetectors 24b and 25b image the image of the position to which the illumination light of the double-sided bonding film F105 was irradiated using imaging elements, such as a CCD. The images (defect inspection results) captured by the photodetectors 24b and 25b are output to the control device 16 .

(Printing device and printing method)

The recording apparatus 13 records defect information based on the defect inspection result of the 1st defect inspection apparatus 11 and the 2nd defect inspection apparatus 12 on the double-sided bonding film F105 (printing apparatus). Specifically, the defect information includes information about the location or type of the defect, and is recorded (printed) as an identification code such as, for example, a barcode, a two-dimensional code, or a QR code (registered trademark). In the identification code, for example, information indicating at what distance along the film width direction the defect detected by the first defect inspection apparatus 11 and the second defect inspection apparatus 12 exists from the position where the identification code was printed. (information about the location of the defect) is included. In addition, the identification code may contain information regarding the type of detected defect. In this embodiment, a two-dimensional code of 7 mm x 7 mm is printed as defect information.

The recording apparatus 13 is provided on the downstream side of the 2nd defect inspection apparatus 12 in the 5th conveyance line 105 . The recording apparatus 13 has, for example, a printing head 13a employing an inkjet method. Moreover, the 7th guide roll 153c in contact with the double-sided bonding film F105 is arrange|positioned at the position opposing the printing head 13a. Then, the printing head 13a is located at a position (recording area) along the edge of the double-sided bonding film F105 in the width direction opposite to the position in contact with the seventh guide roll 153c of the double-sided bonding film F105. By discharging ink, the defect information is printed.

In addition, the recording device 13 may print (mark) a dot-shaped, line-shaped or frame-shaped mark of a size including the defect on the defective portion of the double-sided bonding film F105, so that it may be recorded directly on the defective portion. . At this time, in addition to the mark, information on the type of the defect may be recorded by printing a symbol or a shape indicating the type of the defect on the defect site.

The first lengthening device 14 and the second lengthening device 15 measure the amount of transport of the first film F101 . Specifically, in this embodiment, the rotary encoder which comprises the 1st lengthening machine 14 in the 1st nip roll 111a which is upstream rather than the 1st accumulator 112 in the 1st conveyance line 101; A rotary encoder constituting the second lengthening machine 15 is disposed on the third nip roll 131a on the downstream side of the first accumulator 112 .

The first lengthening machine 14 and the second lengthening machine 15 have 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 the 1st film F101 is measured. The measurement results of the first lengthening device 14 and the second lengthening device 15 are output to the control device 16 .

In addition, in this embodiment, since there is only one accumulator between the first defect inspection apparatus 11 and the recording apparatus 13, the lengthening machine is arranged one by one on the upstream side and the downstream side of this accumulator. have. On the other hand, when a plurality of accumulators exist between the first defect inspection apparatus 11 and the recording apparatus 13, the length measuring device is located on the upstream side of the accumulator on the most upstream side and on the downstream side of the accumulator on the most downstream side. It can be done in a configuration in which they are arranged one by one.

The control apparatus 16 is to control each part of the film manufacturing apparatus 100 comprehensively. Specifically, this control device 16 is provided with a computer system as an electronic control device. A computer system is generally provided with an arithmetic processing unit such as a CPU and an information storage unit such as a memory and a hard disk.

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

The control device 16 analyzes the images captured by the photodetectors 21b, 22b, and 23b and the photodetectors 24b, 25b to determine the presence (position), type, and the like of the defect. When it is determined that a defect exists in the 1st film F101 or the double-sided bonding film F105, the control apparatus 16 controls the recording apparatus 13 and records defect information in the double-sided bonding film F105.

In the defect inspection system 10, defect information is recorded at predetermined timing after a defect inspection so that a shift|offset|difference may not arise between the defect inspection position of the double-sided bonding film F105, and the information recording position of defect information. For example, in this embodiment, the conveyance amount of the film conveyed on the conveyance line L is computed after the time at which the defect inspection by the 1st defect inspection apparatus 11 or the 2nd defect inspection apparatus 12 was performed, and calculation Recording is performed by the recording device 13 when the conveyed amount coincides with the offset distance.

Here, the offset distance refers to the conveyance distance of the film between the first defect inspection apparatus 11 and the second defect inspection apparatus 12 and the recording apparatus 13 . Strictly, the offset distance is the position at which defect inspection is performed by the first defect inspection apparatus 11 and the second defect inspection apparatus 12 (defect inspection position) and the recording apparatus 13 at which defect information is recorded. is defined as the transport distance of the film between positions (information recording positions). In addition, the offset distance is changed when the first accumulator 112 is operated.

An offset distance (hereinafter, referred to as a first offset distance) when the first accumulator 112 is not in operation 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 photodetecting units 21b, 22b, 23b and photodetecting units 24b and 25b, and the photodetecting units 21b and 22b. , 23b, 24b, 25b), a defect inspection is performed. For this reason, the 1st offset distance is memorize|stored in the information storage part of the control apparatus 16 for every photodetection part 21b, 22b, 23b, 24b, 25b.

When the offset distance is changed due to the operation of the first accumulator 112 , the correction value of the offset distance is based on the difference in the transport amount of the first film F101 on the upstream side and the downstream side of the first accumulator 112 . Calculate. 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 lengthening device 14 and the second lengthening device 15 , and now The correction value of the offset distance is computed based on the accumulation amount of 1 film F101.

In the defect inspection system 10 , when the first accumulator 112 is operated, the timing at which the recording device 13 records the defect information is corrected based on the correction value of the offset distance. For example, in the present embodiment, the correction value of the offset distance is calculated based on the measurement results of the first lengthening device 14 and the second lengthening device 15 . The control device 16 calculates an offset distance (hereinafter, referred to as a second offset distance) at the time of operation of the first accumulator 112 based on this correction value and the first offset distance.

In this embodiment, the time at which the defect inspection by the first defect inspection apparatus 11 and the second defect inspection apparatus 12 was performed based on the measurement result of the first lengthening device 14 or the second lengthening device 15 . Thereafter, the conveyance amount of the film conveyed on the conveyance line L is calculated, and recording is performed by the recording apparatus 13 when the calculated conveyance amount coincides with the 2nd offset distance.

In addition, in this embodiment, at the time of operation of the 1st accumulator 112, information (henceforth accumulator operation information) which shows that the 1st accumulator 112 operated separately from defect information (it is called accumulator operation information.) is double-sided bonding film F105 may be recorded in In the case of recording the accumulator operation information, the operator carefully inspects the defective portion of the portion to which the accumulator operation information is attached, so that a shift in the recording position or the like can be detected. Thereby, the possibility of erroneously determining a defective part as a defective part decreases, and the improvement of a yield is achieved.

By the way, in the defect inspection system 10 of this embodiment, shaking may arise in the double-sided bonding film F105 currently conveying depending on the state, conveyance conditions, etc. of the double-sided bonding film F105. In particular, at the both ends of the width direction of the double-sided bonding film F105, it is easy to produce curl depending on the moisture absorption of a film, drying conditions, etc., It is thought that this curl is one of the causes which fluctuation|fluctuation occurs during conveyance.

On the other hand, in the defect inspection system 10 of this embodiment, as shown in FIG. 5, the printing head 13a is arrange|positioned facing the 7th guide roll 153c which contact|connects the double-sided bonding film F105 mentioned above, have.

Thereby, even when a rocking|fluctuation arises in the both ends of the width direction of the double-sided bonding film F105 during conveyance, the shaking|fluctuation of the double-sided bonding film F105 is suppressed at the position which contact|connects the 7th guide roll 153c. For this reason, in the defect inspection system 10 of this embodiment, the defect information printed with the ink i discharged from the printing head 13a is suitably recorded (printed) in the recording area of the double-sided bonding film F105. can

Moreover, it is preferable that the double-sided bonding film F105 hangs on the outer peripheral surface of the 7th guide roll 153c in the angular range of 40 degrees - 130 degrees (henceforth holding angle (theta).). Here, the holding angle referred to in the present invention refers to the angle range in contact with the outer peripheral surface of the guide roll of the film in the circumferential direction as the central angle of the guide roll.

When the holding angle θ is less than 40°, the double-sided bonding film F105 becomes easy to slide on the outer peripheral surface of the seventh guide roll 153c. Therefore, in order to prevent a scratch etc. from occurring by sliding of the double-sided bonding film F105, it is preferable to make holding angle (theta) 40 degrees or more. On the other hand, when the holding angle θ exceeds 130°, for example, air bubbles are easily meshed with each other between the second and third films F102 and F103 and the first film F101 serving as the surface protection film. Therefore, in order to prevent these bubbles from meshing with each other, it is preferable to set the holding angle (θ) to 130° or less.

Moreover, when the tension|tensile_strength applied to 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 fluctuation|fluctuation which generate|occur|produces in the double-sided bonding film F105 can be suppressed. On the other hand, when the tension|tensile_strength applied to the double-sided bonding film F105 is high, it is preferable to make holding angle (theta) less than 90 degrees, and it is more preferable to set it as 85 degrees or less. Thereby, it can prevent the double-sided bonding film F105 from adhering excessively to the outer peripheral surface of the 7th guide roll 153c.

In addition, about the conveyance speed of the double-sided bonding film F105, it is about 9-35 m/min normally. Moreover, the tension|tensile_strength which the double-sided bonding film F105 takes is about 400-1500N in a drying furnace, and is about 200-500N outside a drying furnace. Moreover, it becomes easy to produce a fluctuation|fluctuation, so that the tension|tensile_strength with which the double-sided bonding film F105 is applied is small. The width|variety of the double-sided bonding film F105 is about 500-1500 mm. Moreover, it becomes easy to produce a fluctuation|fluctuation, 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 13-300 micrometers. Moreover, it becomes easy to produce a fluctuation|fluctuation, so that the thickness of the double-sided bonding film F105 becomes thin.

In addition, it is preferable to make the outer diameter of the 7th guide roll 153c into the range of 100-150 mm. When the outer diameter of the 7th guide roll 153c becomes large, the area of the double-sided bonding film F105 which contacts the outer peripheral surface of the 7th guide roll 153c with respect to holding angle (theta) will become large. For this reason, the fluctuation|fluctuation which generate|occur|produces in the double-sided bonding film F105 can be suppressed, and a recording area can be stabilized more. However, when the outer diameter of the 7th guide roll 153c becomes large, since it will become easy to generate|occur|produce the above-mentioned scratch and the mesh|engagement of a bubble, it is preferable to set it as the above-mentioned range.

Further, the higher the roundness of the seventh guide roll 153c, the more stable the recording area can be by suppressing the vibration of the double-sided bonding film F105 in contact with the seventh guide roll 153c. Specifically, the roundness of the seventh guide roll 153c is preferably set to 1.0 mm or less, more preferably 0.5 mm or less.

Moreover, it is preferable to set it as 100 s or less, and, as for the surface roughness (maximum roughness Ry) in the outer peripheral surface of the 7th guide roll 153c, it is more preferable to set it as 25 s or less. Thereby, generation|occurrence|production of the above-mentioned scratch and bubble meshing can be suppressed.

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

As mentioned above, in the defect inspection system 10 of this embodiment, the influence by the fluctuation|fluctuation which arises in the double-sided bonding film F105 in conveyance is reduced, and defect information is recorded (printed) in the double-sided bonding film F105 appropriately. can 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 good yield, and the high-quality optical film ( It is possible to manufacture F10X).

In the recording apparatus 13 in this embodiment, as shown in FIGS. 6(a) to 6(c), the ink i is at least in the area inside the recording area S of the double-sided bonding film F105. ) is provided with a cover 30 to prevent attachment. Here, Fig.6 (a) is the top view which looked at the cover 30 from the upper side of the double-sided bonding film F105, and Fig.6 (b) is the upstream of the conveyance direction of the double-sided bonding film F105 of the cover 30. It is this side view, and FIG.6(c) is the side view which looked at the cover 30 from the outer side of the double-sided bonding film F105.

Specifically, the cover 30 is a first side plate portion 30a that covers the side facing the inside of the double-sided bonding film F105 among the spaces K where the double-sided bonding film F105 and the printing head 13a face each other. ) and the 2nd side plate part 30b which covers the side which faces the upstream of the conveyance direction of the double-sided bonding film F105, and the 3rd which covers the side which faces the downstream of the conveyance direction of the double-sided bonding film F105 It has a side plate part 30c.

The cover 30 is freely attached to and detached from the printing head 13a using means such as screw fixing. Since the side facing the outer side of the double-sided bonding film F105 of the space K of the cover 30 is open, it is easy to attach and detach with respect to the printing head 13a.

As for the cover 30, it is preferable that the space|interval T between the surface which opposes the double-sided bonding film F105, and the surface of the double-sided bonding film F105 is 1 mm or less. By setting this interval T to 1 mm or less, when the ink i ejected from the printing head 13a scatters to the surroundings, the scattering of the ink i is prevented from scattering to the outside of the cover 30 . can be prevented

Incidentally, as a scattering product of the ink (i), among the ink (i) ejected from the printing head 13, for example, the ink (i) scattered around the information recording position and after being adhered to the double-sided bonding film (F105). Ink (i) scattered around, and the like.

When the double-sided bonding film F105 is bonded to the said liquid crystal display panel P, the recording area|region S is located outside the area|region which overlaps with the display area P4 of this liquid crystal display panel P. Here, the recording area S is an area that is cut and removed before bonding to the liquid crystal display panel P.

Among the three side plate parts 30a, 30b, 30c constituting the cover 30, the first side plate part 30a has a ratio of the ink i to the region overlapping the display region P4 of the double-sided bonding film F105. It prevents the product from adhering. On the other hand, the 2nd side plate part 30b is preventing that the splash of ink (i) adheres to the upstream of the conveyance direction of the double-sided bonding film F105. On the other hand, the 3rd side plate part 30c is preventing the scattering material of the ink i from adhering to the downstream side of the conveyance direction of the double-sided bonding film F105.

Spatter of ink (i) is attached to the inner surface of the cover (30). Accordingly, the cover 30 can be periodically peeled off from the printing head 13a for cleaning, and then attached to the printing head 13a for repeated use.

Moreover, it is preferable to make the film manufacturing apparatus 100 into the structure provided with the static electricity removal apparatus 40 which static-eliminates the surface of the double-sided bonding film F105. The static electricity removal apparatus 40 is called an ionizer, and is arrange|positioned upstream from the recording apparatus 13 (printing head 13a) in the double-sided bonding film F105 conveyance direction. 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 width direction of the double-sided bonding film F105.

Accordingly, in the film manufacturing apparatus 100, the scattering product of the ink (i) is prevented from being pulled close to the surface of the double-sided bonding film F105 due to static electricity. Therefore, in the film production apparatus 100, by combining the cover 30 and the static electricity removal apparatus 40 described above, it is possible to further suppress the scattering of the ink (i) from adhering to the surface of the double-sided bonding film F105. can

As mentioned above, in the defect inspection system 10 in this embodiment, the contamination of the double-sided bonding film F105 by the scattering of the ink i at the time of recording defect information on the double-sided bonding film F105 is prevented can do.

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 cover 30 may have a configuration in which at least the first side plate portion 30a is disposed among the three side plate portions 30a, 30b, and 30c. Accordingly, it is possible to prevent the scattering of the ink (i) from adhering to the area overlapping the display area P4 of the double-sided bonding film F105.

Moreover, regarding the said cover 30, as shown in FIG. 7, other than the said three side plate parts 30a, 30b, 30c, the 4th side plate part which covers the side facing the outer side of the double-sided bonding film F105. It can also be set as the structure which arrange|positioned (30d).

Further, with respect to the recording apparatus 13, as shown in Figs. 8(a) and 8(b), for example, the lower end of the cover 31 attached to the printing head 13a is the lower end of the guide roll 41. It may be set as a shape following the external shape. Thereby, the space|interval T between the double-sided bonding film F105 surface can be made into 1 mm or less.

Further, as another embodiment of the present invention, for example, a cover 32 as shown in Figs. 9(a) and 9(b) may be used. This cover 32 consists of a parallel plate-type board|plate material, and is arrange|positioned facing the double-sided bonding film F105 in the state adjacent to the double-sided bonding film F105. In addition, a window (opening) 32a is provided at a position of the cover 32 facing the recording area S. In the case of this configuration, the cover 32 covers the area other than the recording area S, so that the double-sided bonding film F105 due to scattering of the ink i when the defect information is recorded on the double-sided bonding film F105. contamination can be prevented. Moreover, it can also be set as the structure which provided the side plate parts 30a, 30b, 30c, 30d mentioned above on the cover 32. That is, the cover 32 may constitute a bottom plate portion covering the bottom surface of the cover 30 .

In addition, although the said recording apparatus 13 has the structure arrange|positioned downstream of the 2nd defect inspection apparatus 12, it is also possible to arrange|position the 1st defect inspection apparatus 11 downstream. In this case, after the defect inspection by the 1st defect inspection apparatus 11 is performed, the recording apparatus 13 can record defect information.

Incidentally, the recording apparatus 13 is not limited to recording defect information after the above-described defect inspection. For example, in a long-distance conveyance line, a plurality of recording apparatuses are arranged to record distance information at regular distances, and the distance may be corrected based on the recorded distance information. Regarding the recording apparatus for recording such distance information, for example, it may be arrange|positioned upstream of the 1st defect inspection apparatus 11, etc.

In addition, with respect to the film to which the present invention is applied, it is not necessarily limited to optical films such as the above-described polarizing film, retardation film, and luminance enhancing film, and the present invention is applied to a film on which recording by the recording device 13 is performed. Widely applicable.

In addition, the present invention can be widely applied to non-contact printing apparatuses and printing methods such as a laser method in addition to the inkjet method described above. In particular, in the inkjet system, since mist of ink is easily generated, when fluctuations occur in the optical film, printing errors are likely to occur due to the influence thereof. In addition, also with respect to defect information, when complex information such as the above-described two-dimensional code is printed by an inkjet method, it is likely to be affected by fluctuations of the optical film.

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: First nip roll, 112: first accumulator, 112a, 112b: first dancer roll, 113: first guide roll, 121a, 121b: second nip roll, 122: second accumulator, 122a, 122b: second dancer roll , 123a, 123b: second guide roll, 131a, 131b: third nip roll, 141a, 141b: fourth nip roll, 142: third accumulator, 142a, 142b: third dancer roll, 143a, 143b: fourth guide roll, 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: printing head, 14: first lengthening device, 15: second lengthening device, 16: control device, 21a; 22a, 23a, 24a, 25a: lighting unit, 21b, 22b, 23b, 24b, 25b: photodetector, 30: cover, 30a: first side plate, 30b: second side plate, 30c: third side plate, 30d: 4 side plate part 31: cover, 32: cover, 32: window, 40: static electricity removal device, P: liquid crystal display panel (optical display device), F1X: optical film, F10X: optical film, F101: first film; F102: second film, F103: third film, F104: single-sided bonding film, F105: double-sided bonding film

Claims (9)

a conveying line for conveying a long strip-shaped film;
a defect inspection apparatus for inspecting defects of the film conveyed to the conveyance line;
a recording apparatus for recording defect information based on the defect inspection result on a film conveyed to the conveying line;
the recording apparatus has a printing head for printing the defect information in a recording area along an edge of the film;
The printing head is disposed opposite to the guide roll in contact with the film, and performs printing on the opposite side from the position of the film in contact with the guide roll,
An additional guide roll in contact with the film is further provided on the upstream side and downstream side of the guide roll,
The distance between the guide roll and the additional guide roll is within 1000 mm,
The film is a defect inspection system, characterized in that it is hung on the outer peripheral surface of the guide roll in an angle range of 95 ° to 130 °. delete The defect inspection system according to claim 1, wherein the printing head prints the defect information by discharging ink to a recording area of the film. The defect inspection system according to claim 3, wherein the recording apparatus has a cover for preventing the ink from adhering to at least an area inside the recording area of the film. The defect inspection system according to claim 1, further comprising: an electrostatic removal device that is positioned upstream from the recording device in the film conveying direction to remove static electricity from the surface of the film. The film manufacturing apparatus provided with the defect inspection system of Claim 1. A film manufacturing method comprising the step of inspecting a defect using the defect inspection system according to claim 1 . a printing head for printing information on the film while conveying the elongated strip-shaped film;
The printing head is disposed opposite to the guide roll in contact with the film, and performs printing on the opposite side from the position of the film in contact with the guide roll,
An additional guide roll in contact with the film is further provided on an upstream side and a downstream side of the guide roll, and the distance between the guide roll and the additional guide roll is within 1000 mm,
The printing device, characterized in that the film is hung on the outer peripheral surface of the guide roll in an angle range of 95 ° to 130 °. a step of printing information on the film using a printing head while conveying the long strip-shaped film;
By disposing the printing head to face the guide roll in contact with the film, printing is performed in the opposite direction from the position in contact with the guide roll of the film,
An additional guide roll in contact with the film is further provided on an upstream side and a downstream side of the guide roll, and the distance between the guide roll and the additional guide roll is within 1000 mm,
The printing method, characterized in that the film is hung on the outer peripheral surface of the guide roll in an angle range of 95 ° to 130 °.

Images