KR20180101210A - Defect marking method and defect marking apparatus, web manufacturing method and the web, and sheet manufacturing method and the sheet - Google Patents

Abstract

The present invention provides a defect marking method appropriate for displaying a position of a defect. The defect marking method performs defect inspection of an object to be inspected, and marks a defect of the object to be inspected on the basis of a defect inspection result, wherein in another direction of crossing over one direction within a surface of the object to be inspected, a defect (D) is placed between a first printing pattern (PT1) and a second printing pattern (PT2) which are adjacent to each other by printing the first printing pattern (PT1) and the second printing pattern (PT2) on a surface of the object to be inspected. Therefore, a position of the defect (D) can be displayed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a defect marking method, a defect marking apparatus, a method of manufacturing a disc, a disc, and a sheet manufacturing method and sheet,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a defect marking method and a defect marking apparatus, a method for manufacturing a disc, a disc, and a method for manufacturing a sheet and a sheet.

For example, in the manufacturing process of a long strip-shaped disc such as a resin film or paper, the disc defect inspection is carried out while the disc is being transported, and marking (hereinafter referred to as defect marking) on the defect portion of the disc is performed based on the defect inspection result. (See, for example, Patent Documents 1 to 4).

Further, in the process of manufacturing an optical film (sheet) such as a polarizing plate used for a liquid crystal display panel, information (hereinafter referred to as defect information) about defects such as position, kind, size, (Printing) is performed by using a print head on a specific area (hereinafter referred to as a recording area) along the edge.

The optical film is wound around the core after the recording of the defect information is completed. When the amount of winding reaches a certain amount, the optical film is separated from the optical film on the upstream side in the carrying direction and shipped as a disk roll. A sheet (chip) cut in a predetermined size or direction according to the product specifications is cut out from the disc roll. Also, defective parts are excluded from the product and discarded.

Patent Document 1: JP-A-2001-305070 Patent Document 2: JP-A-2002-303580 Patent Document 3: Japanese Patent Application Laid-Open No. 2011-102985 Patent Document 4: JP-A-2014-16217

However, in the conventional defect marking described above, when the defect portion is cut out from the disc, it is cut between the marking and the defect so that the defect is located on the side cut off by cutting and on the side cut off by cutting, The defect position may become unclear in some cases.

In the invention described in Patent Document 2, marking is performed on a defective portion by attaching a wound mark. However, when a wound mark is attached, it is impossible to erase the wound mark after the defect inspection. In this case, the defective portion may be allowed as a product by inspection (inspection) that is visually confirmed after marking. However, when a wound mark is affixed, it becomes unusable as a product.

On the other hand, in the conventional defect marking described above, it is general to mark only the position of the defect by marking the defect part. Therefore, in the conventional defect marking, the above-described defect information is not recorded. Therefore, when defect information is required, for example, when re-inspecting the original roll before shipment, it is necessary to separately record the defect information in the recording area or the like.

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of such conventional circumstances, and it is an object of the present invention to provide a defect marking method and defect marking apparatus suitable for indicating the position of a defect, a method for manufacturing a disc, do.

As a means for solving the above problems, according to an aspect of the present invention, there is provided a defect marking method for marking a defective portion of an object to be inspected, comprising the steps of: The first and second pattern patterns are printed on the surface of the object so that a defect is located between the first pattern pattern and the second pattern pattern.

Further, in the defect marking method of the above embodiment, a method of recording information on the defect by either or both of the first print pattern and the second print pattern may be used.

Further, in the defect marking method of the above-described aspect, a method of printing at least one dot-shaped mark or a plurality of marks in a single direction may be used as either or both of the above-mentioned print patterns.

Further, in the defect marking method of the above embodiment, either one or both of the above-mentioned print patterns may be used in which a plurality of linear marks are printed side by side in at least one or in one direction.

Further, in the defect marking method of the above aspect, a method of recording information on the defect by changing at least one of the number, the interval, the size, and the color of the marks.

Further, in the defect marking method of the above embodiment, the position of the defect in the one direction may be displayed by a printing pattern in which the interval of at least a part of the plurality of marks arranged in the one direction is changed.

Further, in the defect marking method of the above-described aspect, a blank space in which at least a part of a plurality of marks arranged side by side in the one direction is vacated is disposed at a position adjacent to the defect so that the position of the defect in the one direction is It may be displayed.

Further, in the defect marking method of the above aspect, information on the defect is recorded by printing a third factor pattern adjacent to one or both of the first factor pattern and the second factor pattern in the other direction The method is good.

Further, in the defect marking method of the above-described aspect, a method of recording information about the defect other than the defect by the above-mentioned factor pattern.

Further, in the defect marking method of the above embodiment, a method of printing using an ink capable of erasing the printing pattern may be employed.

Further, in the defect marking method of the above embodiment, as the inspection object, marking may be performed on the defective portion of the long strip-shaped disc conveyed in the one direction.

Further, in the defect marking method of the above-described embodiment, marking may be performed on the defective portion of the sheet obtained by cutting the long strip-shaped disc as the inspection object.

According to another aspect of the present invention, there is provided a method of manufacturing a magnetic recording medium, comprising the steps of: performing a defect inspection on a long strip-shaped disc transported in one direction; And performing marking on the defective portion of the disc based on the defect inspection result.

According to an aspect of the present invention, there is provided a method of manufacturing a sheet, comprising the steps of: performing a defect inspection on a sheet obtained by cutting a long strip-shaped disk; and a step of marking a defective portion of the sheet based on the defect inspection result using any of the defect marking methods The method comprising the steps of: preparing a sheet;

Further, according to an aspect of the present invention, there is provided a printing apparatus that performs marking on a defective portion of an inspected object, wherein the printing apparatus includes: And a control unit for controlling the driving of the plurality of printing units, wherein the control unit is configured to control the driving of the plurality of printing units, And controls to select a printing unit that prints the first printing pattern and the second printing pattern so that a defect is located between the printing pattern and the second printing pattern.

Further, in the deficiency marking apparatus of the above aspect, the control unit may set the first print pattern and the second print pattern in accordance with the information about the defect to be recorded for one or both of the selected print units A configuration may be employed in which control is performed to change either one or both of the printing patterns.

Further, in the defect marking apparatus of the above-described aspect, it is also possible to adopt a configuration in which at least one dot-shaped mark is printed as one or both of the print patterns, or a plurality of marks are printed side by side in the one direction.

Further, in the defect marking apparatus of the above-described aspect, linear mark may be printed as one or both of the above-mentioned print patterns in parallel or in parallel in the one direction.

Further, the defect marking apparatus of the above-described aspect may be configured to change at least one of the number, spacing, size, and color of the marks.

In the deficiency marking apparatus of the above aspect, the control section may control to change at least a part of the plurality of marks arranged in the one direction with respect to the selected one of the printing sections.

Further, in the deficiency marking apparatus of the above aspect, the control section arranges, at a position adjacent to the defect, a space in which at least a part of the plurality of marks arranged in the one direction is empty, Control may be performed.

Further, in the deficiency marking apparatus of the above aspect, the controller may select a printing unit that prints a third printing pattern adjacent to either or both of the first printing pattern and the second printing pattern in the other direction And control is performed to change the third factor pattern according to the information about the defect to be recorded for one or both of the selected print portions.

In the deficiency marking apparatus of the above aspect, the control section may be configured to perform control to change any one of the printing patterns in accordance with information about the selected printing section other than the defects to be recorded.

Further, according to an aspect of the present invention, there is provided a defect inspection apparatus comprising: a defect inspection apparatus for performing defect inspection on a long strip-shaped disc transported in one direction; and a defect inspection apparatus provided with any of the defect marking apparatuses, And marking the defective portion of the disc based on the result of the defect inspection.

According to an aspect of the present invention, there is provided a defect inspection apparatus comprising: a defect inspection apparatus for performing a defect inspection on a sheet obtained by cutting a long strip-shaped disc; a defect inspection apparatus provided with any of the defect marking apparatuses, And the marking is performed on the portion of the sheet.

According to an aspect of the present invention, there is provided a disc-shaped disc having a mark formed on a defect portion, wherein the disc is printed on the surface by the marking, and the first print pattern and the second print pattern, Wherein a position of the defect is indicated by a defect located between the first print pattern and the second print pattern.

Further, in the master of the above embodiment, the information about the defect may be recorded by one or both of the first print pattern and the second print pattern.

Further, in the master of the above-described aspect, it is also possible to adopt a constitution in which a dot-like mark is printed as one or both of the above-mentioned print patterns in parallel in a longitudinal direction.

Further, in the master of the above-described aspect, it is also possible to adopt a constitution in which a linear mark is printed as one or both of the above-mentioned print patterns in parallel in at least one or a long longitudinal direction.

Further, in the master of the above embodiment, any one or more of the number, spacing, size, and color of the marks may be changed.

Further, in the master of the above aspect, the position of the defect in the long direction may be indicated by a printing pattern in which intervals of at least a part of a plurality of marks arranged in the longitudinal direction are changed.

Further, in the disk of the above-described aspect, the position of the defect in the long longitudinal direction is displayed by arranging a blank space in which at least a part of a plurality of marks arranged in parallel in the longitudinal direction is vacated, at a position adjacent to the defect .

Further, in the disc of the above-described aspect, in the short-length direction, a third factor pattern adjacent to either one or both of the first factor pattern and the second factor pattern is provided, May be recorded.

Further, in the master of the above-described aspect, it is also possible to have a configuration in which information about something other than the defect is recorded by any of the above-mentioned pattern patterns.

Further, in the master of the above embodiment, the printing pattern may be printed by the ink which may be erased.

According to an aspect of the present invention, there is provided a sheet on which a mark is formed on a defective portion, the first and second print patterns being printed on the surface by the marking and adjacent to each other in a direction crossing one direction, And the position of the defect is indicated by the position of the defect between the first print pattern and the second print pattern.

Further, in the sheet of the above embodiment, the information about the defect may be recorded by one or both of the first print pattern and the second print pattern.

Further, in the sheet of the above embodiment, it is also possible to adopt a configuration in which at least one dot-shaped mark is printed as one or both of the above-mentioned print patterns, or a plurality of marks are printed side by side in the one direction.

Further, in the sheet of the above-described aspect, either one or both of the printing patterns may be printed with at least one linear mark or a plurality of linear marks in the one direction.

Further, in the sheet of the above embodiment, any one or more of the number, spacing, size, and color of the marks may be changed.

Further, in the sheet of the above embodiment, the position of the defect in the one direction may be displayed by a printing pattern in which the interval of at least a part of the plurality of marks arranged in the one direction is changed.

Further, in the sheet of the above-described aspect, the position of the defect in the one direction is displayed by disposing a blank space in which at least a part of the plurality of marks parallel to each other in the one direction is empty at a position adjacent to the defect .

Further, in the sheet of the above embodiment, it is preferable that the sheet has a third printing pattern adjacent to either or both of the first printing pattern and the second printing pattern in the other direction, May be recorded.

Further, in the sheet of the above-described embodiment, the information on something other than the defect may be recorded by the above-mentioned factor pattern.

Further, in the sheet of the above embodiment, the printing pattern may be printed by the ink which may be erased.

As described above, according to the aspect of the present invention, it is possible to provide a defect marking method and defect marking apparatus, a method of manufacturing a disc, a disc, and a method of manufacturing a sheet and a sheet suitable for displaying a position of a defect.

1 is a plan view showing an example of a liquid crystal display panel.
2 is a cross-sectional view of the liquid crystal display panel shown in Fig.
3 is a sectional view showing an example of an optical film.
4 is a side view showing the construction of the film producing apparatus and the defect marking apparatus.
5 is a plan view showing a configuration of the defect marking apparatus shown in Fig.
6 is a plan view showing an example of a first print pattern and a second print pattern printed by dot-shaped marks.
7 is a plan view showing an example of a first print pattern and a second print pattern printed by a linear mark.
8 is a plan view showing an example in which a third factor pattern is added.
9 is a plan view illustrating the difference between types of defects and their factor patterns.
10 is a cross-sectional view showing defects generated in the first manufacturing step and the second manufacturing step.
11 is a plan view showing an example of a first factor pattern and a second factor pattern printed on a defect occurring in the first manufacturing process and the second manufacturing process.
12 is a plan view showing a modified example of the first print pattern and the second print pattern.
13 is a plan view illustrating a combination of printing patterns.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In this embodiment, for example, as a production system of an optical display device, a film production apparatus (a production apparatus of a master) constituting a part thereof and a film production method (a production method of a master) using the film production apparatus are described.

The film production apparatus includes a film-like optical member (optical film) such as a polarizing film, a retardation film, and a brightness enhancement film bonded to a panel-shaped optical display component (optical display panel) such as a liquid crystal display panel or an organic EL display panel ). The film production apparatus constitutes a part of a production system for producing such an optical display unit or an optical display unit including the optical member.

In the present embodiment, a transmissive liquid crystal display device is exemplified 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, an image can be displayed by causing the illumination light emitted from the backlight to enter from the rear 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 configuration of the liquid crystal display panel P shown in Figs. 1 and 2 will be described as an optical display device. Here, Fig. 1 is a plan view showing the configuration of the liquid crystal display panel P. Fig. Fig. 2 is a sectional view of the liquid crystal display panel P taken along the line A-A shown in Fig. On the other hand, in FIG. 2, the illustration of the hatching indicating the cross section is omitted.

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 liquid crystal layer P3 disposed between the first substrate P1 and the second substrate P2.

The first substrate P1 is made of a transparent substrate having a rectangular shape when viewed in a 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 formed by sealing the periphery between the first substrate P1 and the second substrate P2 with a sealing material (not shown) to form a liquid crystal layer P3 having a rectangular shape when viewed from the plane surrounded by the sealing material Respectively. In the liquid crystal display panel P, a region to be humidified on the inner side of the outer periphery of the liquid crystal layer P3 as viewed in a plan view is defined as a display region P4, and an outer region surrounding the periphery of the display region P4, (G).

A first optical film F11 as a polarizing film and a third optical film F13 as a brightness enhancement film which are superimposed on the first optical film F11 are sequentially laminated on the rear surface (backlight side) of the liquid crystal display panel P Respectively. A second optical film F12 as a polarizing film is bonded to the surface (display surface side) of the liquid crystal display panel P. Hereinafter, the first, second and third optical films F11, F12 and F13 are 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. Here, FIG. 3 is a sectional view showing the structure of the optical sheet FX. On the other hand, in FIG. 3, the illustration of the hatching representing the cross section is omitted.

The optical film F1X is obtained by cutting out a sheet piece (chip) of a predetermined length from an optical sheet (original plate) FX of a long strip shape shown in Fig. Specifically, this optical sheet FX is composed of a base sheet F4, an adhesive layer F5 provided on one surface (upper surface in Fig. 3) of the base sheet F4, and an adhesive layer F5 provided on the base sheet A separator sheet F6 provided on one surface of the base sheet F4 and a surface protection sheet F7 provided on the other surface (bottom surface in Fig. 3) of the base sheet F4.

The base sheet F4 has a structure in which, for example, in the case of a polarizing film, the polarizer F4a sandwiches the pair of protective films F4b and F4c. The adhesive layer F5 adheres the 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. [ Further, a portion of the optical film F1X excluding the separator sheet F6 becomes a bonded sheet F8.

The surface protective sheet F7 protects the surface of the base sheet F4. The surface protective sheet F7 is peeled from the surface of the sheet piece (optical film F1X) after the sheet piece (optical film F1X) is adhered to the liquid crystal display panel P.

Further, the base sheet F4 may be configured such that either one of the pair of protective films F4b and F4c is omitted. For example, the protective film F4b on the side of the adhesive layer F5 may be omitted, and the adhesive layer F5 may be directly formed on the polarizer F4a. The protective film F4c on the side of the surface protective sheet F7 is subjected to a surface treatment such as an anti-glare treatment capable of obtaining hard coat treatment or antiglare effect for protecting the outermost surface of the liquid crystal display panel . The substrate sheet F4 is not limited to the above-described laminated structure, and may be a single-layer structure. The surface protective sheet F7 may be omitted.

(Film Production Apparatus and Film Production Method)

Next, the film production apparatus 100 shown in Fig. 4 will be described. Here, FIG. 4 is a side view showing the structure of the film production apparatus 100.

As shown in Fig. 4, the film manufacturing apparatus 100 includes a long strip-shaped first film (F101) made of, for example, a polarizing film, and a long strip-shaped second film After the second film F102 is bonded to both surfaces of the first film F101 by joining the third film F103 in the form of a long strip which is to be a surface protective film to the other surface of the first film F101, ) And the third film (F103) are bonded to each other.

Specifically, the film production apparatus 100 includes a first conveying line 101, a second conveying line 102, a third conveying line 103, a fourth conveying line 104, a fifth conveying line 105, And a winding unit 106 are generally provided.

The first conveying line 101 forms a conveying path for conveying the first film F101 and the second conveying line 102 forms a second film F102 unrolled from the first original roll R1, And the third conveying line 103 forms a conveying path for conveying the one-side bonded film F104 on which the second film F102 is bonded to one surface of the first film F101 And the fourth conveying line 104 forms a conveying path for conveying the third film F103 unrolled from the second original roll R2 and the fifth conveying line 105 forms the single side bonding film F104, Side bonding film F105 (optical film F10X) in which the third film F103 is bonded to the side of the first film F101 of the first film F101 (the other side of the first film F101) . Then, the produced optical film F10X is wound on the core material as the third disk roll R3 in the take-up unit 106. [

The first conveying line 101 is formed by subjecting a film to be a base material of a polarizer such as PVA (Polyvinyl Alcohol), for example, to dyeing treatment, crosslinking treatment, stretching treatment and the like, and then protecting both sides of the film with triacetylcellulose And the first film (F101) in the form of a long strip obtained by bonding the film is transported toward the third transport line (103).

Specifically, the first conveying line 101 is provided with a pair of first nip rolls 111a and 111b (first conveying line) A first accumulator 112 including a plurality of first dancer rolls 112a and 112b and a first guide roll 113 are arranged in parallel in the horizontal direction.

The pair of first nip rolls 111a and 111b rotate in mutually opposite directions with the first film F101 sandwiched therebetween so that the first film F101 in the direction of arrow a ).

The first accumulator 112 absorbs the difference due to the variation of the feed amount of the first film F101 and reduces fluctuations in the tension applied to the first film F101. Specifically, the first accumulator 112 is provided between the first nip rolls 111a and 111b and the first guide roll 113, and includes a plurality of dancer rolls 112a located on the upper side and a plurality of And a plurality of dancer rolls 112b are alternately arranged in parallel.

In the first accumulator 112, while the first film F101 is alternately engaged with the upper side dancer roll 112a and the lower side dancer roll 112b, the first film F101 is conveyed while the first film F101 is conveyed, The dancer roll 112a and the lower dancer roll 112b are moved up and down relative to each other. This makes it possible to store the first film F101 without stopping the first transfer line 101. [ For example, in the first accumulator 112, the distance between the upper side dancer roll 112a and the lower side dancer roll 112b is widened to increase the accumulation of the first film F101, The accumulation of the first film F101 can be reduced by narrowing the distance between the lower film 112a and the lower side dancer roll 112b. The first accumulator 112 is operated during work such as joining after exchanging the core material of the disk rolls R1 to R3, for example.

The first guide roll 113 guides the first film F101 drawn by the first nip rolls 111a and 111b toward the upstream side of the third conveyance line 103 while rotating. In addition, the first guide rolls 113 may be arranged not only in one but also in a plurality.

The second conveying line 102 is disposed on the third conveying line 103 while releasing the second film F102 in the form of a long strip which is a surface protective film such as PET (polyethylene terephthalate) from the first original roll R1, As shown in FIG.

Specifically, the second conveying line 102 is provided with a pair of second nip rolls 121a and 121b from the other side with the upstream side of the third conveying line 103 interposed therebetween toward the third conveying line 103, A second accumulator 122 including a plurality of second dancer rolls 122a and 122b and a plurality of second guide rollers 123a and 123b arranged in parallel in the horizontal direction.

The pair of second nip rolls 121a and 121b rotate in mutually opposite directions with the second film F102 sandwiched therebetween so that the second film F102 in the direction of the arrow b shown in Fig. F102.

The second accumulator 122 absorbs the difference due to the variation of the feed amount of the second film F102 and reduces fluctuations in the tension applied to the second film F102. Specifically, the second accumulator 122 is provided between the second nip rolls 121a and 121b and the second guide rollers 123a and 123b, and includes a plurality of dancer rolls 122a positioned on the upper side and a plurality of And a plurality of dancer rolls 122b are alternately arranged in parallel.

In the second accumulator 122, while the second film F102 is alternately engaged with the upper-side dancer roll 122a and the lower-side dancer roll 122b, the second film F102 is conveyed while the upper film The dancer roll 122a and the lower dancer roll 122b are moved up and down relative to each other. As a result, the second film F102 can be stored without stopping the second transfer line 102. [ For example, in the second accumulator 122, the accumulation of the second film F102 is increased by widening the distance between the upper side dancer roll 122a and the lower side dancer roll 122b, The accumulation of the second film F102 can be reduced by narrowing the distance between the lower film 122a and the lower side dancer roll 122b. The second accumulator 122 is operated at the time of work such as joining after exchanging the core material of the disk rolls R1 to R3, for example.

The plurality of second guide rollers 123a and 123b guide the second film F102 drawn by the second nip rolls 121a and 121b toward the upstream side of the third conveyance line 103 while rotating . Here, the second guide rollers 123a and 123b are not limited to a plurality of arrangements, but may be arranged only one.

The third conveying line 103 conveys the long strip-shaped one-side bonded film F104 bonded to one surface of the first film F101 to the fifth conveying line 105 will be.

Specifically, a third pair of third nip rolls 131a and 131b is disposed on the third conveyance line 103. As shown in FIG. The pair of third nip rolls 131a and 131b are positioned at 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 one side bonding film F104 bonded with the first film F101 and the second film F102 is rotated in the direction opposite to the direction of the arrow c in FIG. ).

The fourth conveying line 104 is a part of the fifth conveying line 105 while releasing the third film F103 in the form of a long strip which is a surface protective film such as PET (polyethylene terephthalate) from the second disk roll R2, As shown in FIG.

Concretely, the fourth conveying line 104 is provided with a pair of fourth nip rolls 141a and 141b from one side located on the downstream side of the third conveying line 103 to the third conveying line 103, A third accumulator 142 including a plurality of third dancer rolls 142a and 142b and a plurality of fourth guide rollers 143a and 143b arranged in parallel in the horizontal direction.

The pair of fourth nip rolls 141a and 141b rotate in mutually opposite directions with the third film F103 sandwiched therebetween so that the third film F103 in the direction of arrow d shown in Fig. F103.

The third accumulator 142 absorbs the difference due to the variation in the amount of conveyance of the third film F103 and reduces fluctuations 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 plurality of second dancer rolls 142b positioned on the lower side between the fourth nip rolls 141a, 141b and the fourth guide rolls 143a, And a plurality of dancer rolls 142b are alternately arranged in parallel.

In the third accumulator 142, while the third film F103 is alternately engaged with the upper side dancer roll 142a and the lower side dancer roll 142b, the third film F103 is conveyed while the upper side The dancer roll 142a and the lower dancer roll 142b are moved up and down relative to each other. As a result, the third film F103 can be stored without stopping the fourth transfer line 104. [ For example, in the third accumulator 142, the accumulation of the third film F103 is increased by widening the distance between the upper side dancer roll 142a and the lower side dancer roll 142b, The accumulation of the third film F103 can be reduced by narrowing the distance between the lower film 142a and the lower side dancer roll 142b. The third accumulator 142 is operated at the time of work such as joining after exchanging the core material of the disk rolls R1 to R3, for example.

The plurality of fourth guide rollers 143a and 143b are configured such that the third film F103 drawn out by the fourth nip rolls 141a and 141b while being rotated is moved to the downstream side of the third conveyance line 103 (The upstream side of the line 105). Here, the fourth guide rollers 143a and 143b are not limited to a plurality of arrangements, but may be arranged only one.

The fifth conveying line 105 is a conveying line for conveying the single-sided double-sided adhesive sheet F103, which is obtained by joining the third film F103 to the surface of the one-side bonded film F104 on the first film F101 side (the other side of the first film F101) And the bonding film F105 (optical film F10X) is transported toward the third disk roll R3.

Specifically, the fifth conveying line 105 is provided with a pair of fifth nip rolls 151a and 151b from the other side with the downstream side of the third conveying line 103 interposed therebetween, toward the third disk roll R3, A fifth accumulator 152 including a fifth guide roll 153a, a pair of sixth nip rolls 151c and 151d, a plurality of fourth dancer rolls 152a and 152b, And the rolls 153b are arranged in parallel in the horizontal direction.

The pair of fifth nip rolls 151a and 151b are located at the confluence of the downstream side of the third conveyance line 103 and the upstream side of the fifth conveyance line 105, The double-side bonded film F105 in which the single-side bonded film F104 and the third film F103 are joined is rotated in the direction opposite to the direction of arrow e in FIG. 4 (downward ).

The fifth guide roll 153a guides the double-side bonded film F105 drawn by the fifth nip rolls 151a and 151b toward the fourth accumulator 152 while rotating. Here, the fifth guide rollers 153a are not limited to the structure in which only one is arranged, but a plurality of the fifth guide rolls 153a may be arranged.

The pair of sixth nip rolls 151c and 151d are rotated in mutually opposite directions with the double-sided adhesive film F105 sandwiched therebetween so that the double-faced adhesive film (double-sided adhesive film) F105).

In the fourth accumulator 152, while the double-sided adhesive film F105 is alternately engaged with the upper-side dancer roll 152a and the lower-side dancer roll 152b, The dancer roll 152a and the lower dancer roll 152b are moved up and down relative to each other. As a result, the double-side bonded film F105 can be stored without stopping the fifth conveying line 105. [ For example, in the fourth accumulator 152, the distance between the upper-side dancer roll 152a and the lower-side dancer roll 152b is widened to increase the accumulation of the double-sided adhesive film F105, It is possible to reduce the accumulation of the double-sided bonded film F105 by narrowing the distance between the lower side dancer roll 152a and the lower side dancer roll 152b. The fourth accumulator 152 is operated at the time of work such as joining after exchanging the core material of the disk rolls R1 to R3, for example.

The sixth guide roll 153b guides the double-side bonded film F105 toward the third disk roll R3. Here, the sixth guide rollers 153b may be arranged not only in one but also in a plurality.

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

(Defect Marking Apparatus and Defect Marking Method)

Next, a defect marking apparatus 10 provided in the film production apparatus 100 and a defect marking method using the defect marking apparatus 10 will be described.

4, the defect marking apparatus 10 constitutes a part of the film production apparatus 100 and comprises a transfer line L, a first defect inspection apparatus 11 and a second defect inspection A recording apparatus 13, a first side arm 14 and a second side arm 15, and a control unit 16, as shown in FIG.

The conveying line L forms a conveying path for conveying the film to be inspected. In the present embodiment, the first conveying line 101, the third conveying line 103, and the fifth conveying line 105 The return line L is formed.

The first defect inspection apparatus 11 inspects defects of the first film F101 before the second film F102 and the third film F103 are bonded. Specifically, the first defect inspection apparatus 11 detects various defects such as foreign matter defect, irregular defect, spots defect, and the like which are generated when the first film F101 is manufactured or when the first film F101 is transported. The first defect inspection apparatus 11 performs inspection processing such as reflection inspection, transmission inspection, oblique transmission inspection, and orthogonal Nicole transmission inspection on the first film F101 conveyed to the first conveyance line 101 Thereby detecting a defect in the first film F101.

The first defect inspection apparatus 11 includes a plurality of illumination units 21a for irradiating the first film F101 with illumination light on the upstream side of the first nip rolls 111a and 111b in the first transfer line 101, 22b and 23b for detecting light (transmitted light) transmitted through the first film F101 or light reflected from the first film F101 (reflected light) have.

In this embodiment, a plurality of illumination units 21a, 22a, and 23a and optical detection units 21b, 22b, and 23b, which are arranged in the transport direction of the first film F101, F101 are disposed so as to face each other. Further, the first defect inspection apparatus 11 is not limited to the structure for detecting such transmitted light, but may be configured to detect reflected light or to detect transmitted light and reflected light. In the case of detecting reflected light, the light detecting portions 21b, 22b, and 23b may be disposed on the side of the illumination portions 21a, 22a, and 23a.

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 in accordance with the type of defect inspection. The photodetector units 21b, 22b, and 23b capture an image at a position irradiated with the illumination light of the first film F101 using an image pickup device such as a CCD. The image (defect inspection result) picked up by the photodetector units 21b, 22b, and 23b is output to the control unit 16. [

The second defect inspection apparatus 12 inspects defects of the first film F101, that is, the double-sided bonded film F105 after the second film F102 and the third film F103 are bonded. Specifically, the second defect inspection apparatus 12 is configured such that when the second film F102 and the third film F103 are bonded to the first film F101, the single-side bonding film F104 and the double-side bonding film F105, Such as a foreign matter defect, an irregular defect, a spots defect, and the like, which are generated when the semiconductor wafer is transported. The second defect inspection apparatus 12 performs inspection processing such as reflection inspection, transmission inspection, warp penetration inspection, and orthogonal Nicole penetration inspection on the double-side bonded film F105 conveyed to the fifth conveyance line 105 Thereby detecting defects in the double-sided bonded film F105.

The second defect inspection apparatus 12 is provided on the fifth conveying line 105 on the downstream side of the fifth nip rolls 151a and 151b with a plurality of illumination units 24a And a plurality of optical detecting portions 24b and 25b for detecting light (transmitted light) transmitted through the both-side bonded film F105 or light reflected from the two-side bonded film F105 (reflected light).

A plurality of illumination units 24a and 25a and a plurality of optical detection units 24b and 25b which are arranged in the conveying direction of the double-sided adhesive film F105 are provided between the double-side adhesive film F105 and the double- As shown in Fig. Further, the second defect inspection apparatus 12 is not limited to the configuration for detecting such transmitted light, but may be configured to detect reflected light or to detect transmitted light and reflected light. In the case of detecting reflected light, the light detection units 24b and 25b may be disposed on the side of the illumination units 24a and 25a.

The illumination units 24a and 25a irradiate the two-side bonded film F105 with the illumination light whose light intensity, wavelength, polarization state, etc. are adjusted in accordance with the type of defect inspection. The photodetecting sections 24b and 25b use an image pickup device such as a CCD to pick up an image of the position where the illumination light of the double-side bonded film F105 is irradiated. An image (defect inspection result) picked up by the photodetector units 24b and 25b is output to the control unit 16. [

The recording apparatus 13 is a printing apparatus that performs marking on a defective portion based on a defect inspection result of the first defect inspection apparatus 11 and the second defect inspection apparatus 12. [ The recording apparatus 13 is provided on the fifth conveyance line 105 on the downstream side of the second defect inspection apparatus 12. The recording apparatus 13 has a plurality of print heads 13a employing, for example, an ink jet method. Here, the print head 13a may be of a laser type.

As shown in Fig. 5, the plurality of print heads 13a are arranged side by side in the direction (width direction) intersecting with the conveying direction of the both-side bonded film F105. The nozzle portions (printing portions) 13b for ejecting the ink are arranged in parallel in the respective print heads 13a at predetermined intervals in the direction (width direction) intersecting with the conveying direction of the double-side bonded film F105 have. The nozzle portion 13b of each print head 13a is arranged at equal intervals from one end side to the other end in the width direction of the both side adhesive film F105 opposite to the both side adhesive film F105.

In addition, a seventh guide roll 153c, which is in contact with the double-sided adhesive film F105, is disposed at a position facing the plurality of print heads 13a. The nozzle portion 13b of each print head 13a is moved from the side opposite to the position where it contacts the seventh guide roll 153c of the both side face F105 toward the surface of the both side face F105 . This makes it possible to mark (mark) a dot-shaped mark on the surface of the both-side bonded film F105.

The first side orifice 14 and the second side orifice 15 measure the transport amount of the first film F101. Specifically, in the present embodiment, a rotary encoder constituting the first side arm 14 in the first nip roll 111a on the upstream side of the first accumulator 112 in the first conveyance line 101, A rotary encoder constituting the second side arm 15 is disposed on the third nip roll 131a on the downstream side of the first accumulator 112. [

The first side orifice 14 and the second side orifice 15 are arranged in such a manner that a rotary encoder is moved in accordance with 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 transport amount of the first film (F101) is measured. The measurement results of the first side arm 14 and the second side arm 15 are output to the controller 16. [

Further, in the present embodiment, since there is only one accumulator between the first defect inspection apparatus 11 and the recording apparatus 13, there is provided a configuration in which one side organ is arranged on the upstream side and the downstream side of the accumulator have. On the other hand, when there are a plurality of accumulators between the first defect inspection apparatus 11 and the recording apparatus 13, the upstream side of the accumulator on the most upstream side and the downstream side of the accumulator on the most downstream side It is sufficient to arrange one organ for each organ.

The control device 16 performs overall control of each part of the film production apparatus 100. Specifically, the control device 16 is provided with a computer system as an electronic control device. The computer system roughly includes an operation processing unit such as a CPU and an information storage unit such as a memory or a hard disk.

An operating system (OS) for controlling the computer system and a program for executing various processes are recorded in the information storage unit of the control device 16 and the arithmetic processing unit for executing various processes in the respective units of the film production apparatus 100. The control device 16 may also include a logic circuit such as an ASIC for executing various processes necessary for controlling each section of the film production apparatus 100. [ The control device 16 also includes an interface for performing input / output with an external device of the computer system. An input device such as a keyboard or a mouse, a display device such as a liquid crystal display display, a communication device, or the like can be connected to this interface.

The control device 16 drives the nozzle portions 13b of the plurality of print heads 13a based on the defect inspection results of the first defect inspection device 11 and the second defect inspection device 12 And the like. That is, the control device 16 analyzes the image picked up by the photodetectors 21b, 22b, and 23b and the photodetectors 24b and 25b to determine the presence (position), kind, and the like of the defect. If it is determined that there is a defect in the first film F101 or the double-sided adhesive film F105, the driving of the corresponding nozzle portion 13b is controlled to mark the defective portion of the double-sided adhesive film F105 The defect marking is performed.

The defect marking apparatus 10 performs defect marking at a predetermined timing after the defect inspection so that no deviation occurs between the defect inspection position of the double-sided bonded film F105 and the marking position of the defect portion. For example, in the present embodiment, the transport amount of the film transported on the transport line L is calculated after the time of defect inspection by the first defect inspection apparatus 11 or the second defect inspection apparatus 12, When the amount of conveyance matches the offset distance, defect marking is performed by the recording apparatus 13.

Here, the offset distance refers to the transport distance of the film between the first defect inspection apparatus 11 and the second defect inspection apparatus 12 and the recording apparatus 13. Strictly speaking, the offset distance is determined by the position (defect inspection position) where defect inspection is performed by the first defect inspection apparatus 11 and the second defect inspection apparatus 12 and the position (defect inspection position) where marking is performed by the recording apparatus 13 Marking position) of the film. Further, the offset distance fluctuates when the first accumulator 112 is operated.

An offset distance (hereinafter referred to as a first offset distance) at the time of non-operation of the first accumulator 112 is stored in the information storage unit of the control device 16 in advance. Specifically, the first defect inspection apparatus 11 and the second defect inspection apparatus 12 include a plurality of photodetection units 21b, 22b, and 23b and photodetection units 24b and 25b, respectively. The photodetection units 21b and 22b , 23b, 24b, and 25b. Therefore, the first offset distance is stored in the information storage unit of the controller 16 for each of the optical detectors 21b, 22b, 23b, 24b, and 25b.

When the offset distance varies due to the operation of the first accumulator 112, the correction value of the offset distance is calculated on the basis of the difference between the transport amount of the first film F101 on the upstream side and the downstream side of the first accumulator 112 . 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 side arm 14 and the second side arm 15, 1 The correction value of the offset distance is calculated based on the accumulation amount of the film F101.

The defect marking apparatus 10 corrects the timing at which the recording apparatus 13 performs marking based on the correction value of the offset distance when the first accumulator 112 is in operation. For example, in the present embodiment, the correction value of the offset distance is calculated based on the measurement results of the first side arm 14 and the second side arm 15. The control device 16 calculates an offset distance (hereinafter referred to as a second offset distance) when the first accumulator 112 is activated based on the correction value and the first offset distance.

The time at which the defect inspection is performed by the first defect inspection apparatus 11 and the second defect inspection apparatus 12 based on the measurement results of the first side arm 14 or the second side arm 15 Thereafter, the transport amount of the film transported on the transport line L is calculated, and when the calculated transport amount coincides with the second offset distance, the defect marking is performed by the recording apparatus 13.

In this embodiment, when the first accumulator 112 is operated, information indicating that the first accumulator 112 has been activated separately from the defect marking (hereinafter, referred to as accumulator operation information) is referred to as a double-side bonded film F105. . When the accumulator operation information is recorded, it is possible for the operator to carefully check the defective portion of the portion to which the accumulator operation information is attached, thereby detecting the deviation of the marking position or the like. As a result, it is less likely that a good part is determined to be a defective part by mistake, thereby improving the yield.

However, in the defect marking apparatus 10 of the present embodiment, as shown in Fig. 6, the first printing pattern (for example, the first printing pattern F105) adjacent to the double-side bonded film F105 in the width direction The first print pattern PT1 and the second print pattern PT2 are printed so that the defect D is positioned between the first print pattern PT1 and the second print pattern PT2.

In the present embodiment, a plurality of dot-shaped marks DM are printed side by side as a first printing pattern PT1 and a second printing pattern PT2 in the conveying direction (long longitudinal direction) of the double-sided adhesive film F105. The mark DM is of such a size that it can be seen visually, and specifically, its diameter is 5 mm or less (more preferably 1 mm or more but 3 mm or less).

The control device 16 includes two nozzle portions 13b for printing the first printing pattern PT1 and the second printing pattern PT2 among the plurality of nozzle portions 13b arranged in the width direction of the double-side bonded film F105 ). The selected two nozzle portions 13b are formed on both sides in the width direction (short lengthwise direction) of the double-sided bonded film F105 with the defect D therebetween by the first print pattern PT1 and the second print pattern PT2).

In this case, since the defect D is located between the first print pattern PT1 and the second print pattern PT2, the position of the defect D therebetween can be displayed. Accordingly, the position of the defect (D) can be easily grasped in the inspection (inspection) by checking with the eyes after the marking.

In addition, the size of the defect D therebetween can be recognized by the interval between the first print pattern PT1 and the second print pattern PT2. Therefore, the two nozzle portions 13b to be selected are not limited to the case where the adjacent nozzle portions 13b are necessarily selected among a plurality of nozzle portions 13b aligned in the width direction of the both-side bonded film F105 , And the two nozzle portions 13b may be appropriately selected in accordance with the position and size of the defect (D).

When the defect D is located between the first print pattern PT1 and the second print pattern PT2 and the defect portion is cut out from the both-side bonded film F105, the first print pattern PT1 and the second print pattern PT2 It is cut between any one of the second printing patterns PT2 and the defect D. [

In this case, either the first printing pattern PT1 or the second printing pattern PT2 remains on the side cut by cutting and on the side where it is cut off by cutting. As a result, it is possible to determine whether the defect D is located on the side cut by the cutting and where the defect D is cut off by the cutting, and the first printing pattern PT1 or the second printing pattern PT2 remaining after the cutting. The position can be easily confirmed.

Further, with respect to the first printing pattern PT1 and the second printing pattern PT2, it is possible to print using the ink which can be erased. As described above, the defective portion may be allowed as a product by inspection (inspection) by checking with eyes after marking. In this case, by erasing the first print pattern PT1 and the second print pattern PT2, this portion can be used as a product, and the yield can be improved.

With regard to the ink which can be erased, it is preferable to use a solvent appropriately selected from ketones (methyl ethyl ketone, acetone, etc.), esters (ethyl acetate, propyl acetate acetate and the like), alcohols (ethanol, , Oil-based inks to which a coloring agent, a film-forming resin and the like are added can be used. If necessary, a hardening agent or a surfactant may be added. On the other hand, as the solvent for erasing the ink, the same solvent as the above-mentioned solvent can be used. Further, the use of aromatic hydrocarbons such as toluene and xylene is undesirable because it invades the material of the optical film (polarizing plate).

In the defect marking apparatus 10 of the present embodiment, information on the defect D is recorded by either or both of the first print pattern PT1 and the second print pattern PT2.

Specifically, when printing the first printing pattern PT1 and the second printing pattern PT2, the control device 16 displays information about the defects D to be recorded (defects (The first print pattern PT1 and the second print pattern PT2 in this embodiment) of either or both of the first print pattern PT1 and the second print pattern PT2 are changed .

For example, in this embodiment, the number and spacing of the marks DM constituting the first print pattern PT1 and the second print pattern PT2 are changed in accordance with the defect information to be recorded. Thereby, it is possible to record the defect information while marking the defect part.

The defect information is information on a defect (D) such as the position, type, size, and inspection method (type of defect inspection) of the defect (D). The number and spacing of marks DM are previously set in the first print pattern PT1 and the second print pattern PT2 so that these defect information can be identified.

For example, in the first print pattern PT1 and the second print pattern PT2 shown in Fig. 6, five marks DM are formed in the conveying direction (long length direction), which is one direction of the both-side bonded film F105, Are printed side by side. Of these, two marks DM are arranged on the upstream side and three marks DM are arranged on the downstream side. Further, one blank (gapless portion) K is provided between the mark DM on the upstream side and the mark DM on the downstream side.

The blank K is arranged substantially in the same direction as the defect D in the width direction (short-length direction) which is the other direction of the both-side bonded film F105. That is, this blank K indicates the position of the defect D in the carrying direction (long length direction) of the double-sided bonded film F105. When the defect (D) is larger than the blank (K), it is preferable to arrange the blank (K) at a position adjacent to the center of the defect (D).

In this case, not only between the first printing pattern PT1 and the second printing pattern PT2 but also between the mark DM on the upstream side and the mark DM on the upstream side due to the blank K, Can be displayed. Thus, the position of the defect D can be more easily grasped. When the chip is cut out over the defect (D), the remaining mark (DM) can be reported and it can be determined whether or not the defect (D) exists in the chip. Thus, the use efficiency of the double-sided bonded film F105 can be improved.

In view of the difference in the number of the marks DM on the upstream side and the downstream side, the conveying direction (the direction indicated by the arrow in Fig. 6) of the double-side bonded film F105 can be easily .

It is also possible to grasp the shift amount of the timing between the defect inspection position and the marking position from the displacement amount in the carrying direction (long length direction) of the double-side bonded film F105 of the defect (D) and the blank (K). Then, the timing of marking by the recording apparatus 13 can be easily adjusted based on this shift amount.

As for the size of the blank K, the interval (distance between the centers) T1 of the marks DM which are arranged at regular intervals in the carrying direction (the distance between the centers) (T2) is preferably increased. More specifically, it is preferable to set the range of 1.2? T2 / T1? 3.0, more preferably 1.5? T2 / T1? 2.5.

As described above, according to the present embodiment, it is possible to record the position of the defect D by the first print pattern PT1 and the second print pattern PT2 described above, and to record the defect information.

In addition, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

For example, the first print pattern PT1 and the second print pattern PT2 are not limited to the case of changing the number of the marks DM or the intervals of the marks DM, , Blue, black, etc. preferably black) can be changed. That is, at least one of the number, interval, size (diameter), and color of the dot-like marks DM may be changed. Accordingly, these factor patterns (PT1, PT2) can be set more finely and more information can be recorded.

7, the first printing pattern PT1 and the second printing pattern PT2 are not limited to the dot-type mark DM described above, The linear mark LM may be printed in the carrying direction (the long direction).

In this case, not only the above-described print head 13a of the inkjet method but also a plurality of markers (printing portions) arranged side by side in the direction (width direction) intersecting the conveying direction of the double-sided adhesive film F105 can be used. The markers are not particularly limited, such as pen markers and laser markers.

In the case of recording defect information by printing the linear mark LM, at least one or a plurality of marks LM are arranged in the conveying direction (long length direction) of the double-side bonded film F105 in accordance with the defect information to be recorded To change at least one of the number, spacing, size (length, thickness), and color of the linear marks LM. Thus, it is possible to record the defect information in the same manner as in the case of printing the dot-like marks DM. In the case where the blank K is placed in the linear mark LM, it is preferable that the interval of the blank K is about 3 to 5 mm.

As shown in Figs. 8 (a), 8 (b), and 8 (c), in the width direction (short length direction) of the double-sided bonded film F105, And the third printing pattern PT3 adjacent to either or both of the second printing pattern PT2 may be printed.

In this case, in addition to the two nozzle portions 13b for printing the first print pattern PT1 and the second print pattern PT2 described above, the controller 16 controls the nozzles 13b for printing the third print pattern PT3, And selects the portion 13b. As to the nozzle unit 13b for printing the third parameter pattern PT3, at least one or a plurality of nozzle units 13b can be selected in accordance with the defect information to be recorded.

That is, as shown in FIG. 8A, the third factor pattern PT3 may be printed adjacent to any one of the first factor pattern PT1 and the second factor pattern PT2, 8 (b), in the case of printing adjacent to both sides of the first print pattern PT1 and the second print pattern PT2, as shown in Fig. 8 (c), the two-side bonded film F105 It is possible to appropriately select them according to the defect information to be recorded, such as the case where a plurality of images are printed side by side in the width direction (short length direction).

It is also possible to print the third factor pattern PT3 between the first factor pattern PT1 and the second factor pattern PT2. In this case, it is possible to print on the upstream side, the downstream side, or both sides in the conveying direction (long longitudinal direction) of the double-side bonded film F105 sandwiching the defect D therebetween.

Similar to the first print pattern PT1 and the second print pattern PT2, the third print pattern PT3 can be printed by the dot mark DM or the linear mark LM. The method of changing the third factor pattern PT3 is also the same as the case of changing the first factor pattern PT1 and the second factor pattern PT2.

Therefore, as to the defect information, more information can be recorded by the combination of the first print pattern PT1, the second print pattern PT2 and the third print pattern PT3 described above.

As to the defect information recorded by any of the above-described first, second and third pattern (PT1, PT2, PT3), it is possible to change any factor pattern, for example, The number, spacing, size (diameter, length, thickness), and color of the marks DM (DM) constituting the printing pattern to be printed may be set in advance. Accordingly, the kind of the defect D and the like can be identified according to a predetermined rule.

9 (a), the bubble system shown in FIG. 9 (b), the luminance system shown in FIG. 9 (c), and the defect system shown in FIG. 9 (d) ), And the like. Among them, the foreign matters system shown in Fig. 9 (a) is a defect (D) caused by the foreign matter being mixed into the both-side bonded film F105. On the other hand, the bubble system shown in Fig. 9 (b) is a defect (D) due to the formation of bubbles in the double-sided bonded film F105. These bubbles sometimes engage with each other around the foreign object when the foreign object is mixed. On the other hand, the luminosity system shown in Fig. 9 (c) is a defect (D) generated in the first film F101 which is a polarizing film, and when the polarizer is arranged orthogonally to the polarizer film, (D). On the other hand, the defect (D) in the corrugated system shown in Fig. 9 (d) is a defect (D) due to wrinkles in the double-sided bonded film F105.

The number of marks DM disposed on the upstream side among the mark DM on the upstream side and the mark DM on the downstream side with the space K interposed therebetween is changed according to the type of the defect D It is different. For example, the number of the marks DM arranged on the upstream side is three in the foreign substance system shown in Fig. 9 (a), one in the bubble system shown in Fig. 9 (b) Four in the crease system shown in Fig. 9 (d). This makes it possible to easily identify the type of the defect D from the number of marks DM arranged on the upstream side.

Further, in the present invention, it is also possible to record information on something other than the defect (D) by changing any one of the above-described first, second and third pattern (PT1, PT2, PT3)

For example, manufacturing information such as manufacturing conditions and manufacturing sites, the frequency of occurrence of defects of the same kind, and the presence or absence of the periodicity can be recorded as information on the matters other than the defect (D). In addition, by combining these manufacturing information, it is possible to specify the cause, location, process, and the like of the defect (D). As a result, it is possible to reduce the occurrence of defects D by coping with, for example, maintenance of the equipment causing the defect D.

10 (a) shows a case where a defect D1 is generated in a step (first step) of bonding a protective film (TAC) to both surfaces of a polarizer (PVA) in the above-described production process of a polarizing film . 10 (b) shows a case where the defect D2 occurs in the step (second step) of bonding the pressure-sensitive adhesive and the separator to the surface of one protective film (TAC) after the first step.

For the defect D1 generated in the first step, a first print pattern PT1 and a second print pattern PT2 as shown in Fig. 11 (a) are printed. On the other hand, for the defect D2 generated in the second step, for example, a first print pattern PT1 and a second print pattern PT2 as shown in Fig. 11 (b) are printed.

In this case, as for the positions of the defects D1 and D2 shown in Figs. 11A and 11B, the first printing pattern PT1 is provided on both sides with the defects D1 and D2 interposed therebetween, And the second printing pattern PT2, and a space K between the marks DM arranged at regular intervals.

With respect to the information recorded in the defects D1 and D2, the type (defect information) of the defects D1 and D2 and the type (defect information) of the defects D1 and D2 are determined by the first printing pattern PT1 and the second printing pattern PT2, (Manufacturing information) indicating which of defects (D1, D2) occurred in the process and the second process is recorded.

Specifically, the kinds of the defects D1 and D2 are distinguished by the colors of the marks DM constituting the first and second printing patterns PT1 and PT2. The kind of the defects D1 and D2 can be identified by the difference in color of the mark DM such as transmission defects (blue), cross defects (red), and reflection defects (green).

On the other hand, in the first and second printing patterns PT1 and PT2, by the number of marks DM on the upstream side (the number of marks DM is smaller) than the blank K, (D1, D2) occurring in any of the steps of FIG. For example, when the number of marks DM on the upstream side of the first and second printing patterns PT1 and PT2 is one, it indicates that the defect D1 occurs in the first step, (D2).

In addition to the first and second printing patterns PT1 and PT2 shown in Fig. 11 (b), a third printing pattern PT3 as shown in Fig. 11 (c) may be printed. As to the third factor pattern PT3, information (defect information) indicating the presence of the defect D2 in the layer of the stacked polarizing films is recorded by the number of the marks DM. For example, since the third printing pattern PT3 shown in Fig. 11 (c) is composed of three marks DM, defects D2 exist in the third layer TAC in the stacking order It is possible to identify that

As described above, in the present invention, the positions of the defects D1 and D2 are indicated by printing the first, second and third printing patterns PT3 on the polarizing film, and the defects D1 and D2, And the like can be recorded.

In the present invention, as in the case of the first printing pattern PT1 and the second printing pattern PT2 shown in Fig. 12, the spacing of the marks DM is narrowed instead of the space K described above, The position of the defect D in the transport direction (long length direction) of the film F105 may be displayed.

Furthermore, in the present invention, in order to display the position of the defect D in the carrying direction (long length direction) of the double-sided bonded film F105, , It is also possible to change the size of the mark DM or to display the position of the defect D using the third factor pattern PT3.

In the present invention, a combination of any one of the above-described first, second and third printing patterns PT1, PT2, and PT3 may be used, for example, as shown in Figs. 13 (a) , It is possible to print various factor patterns around the defect (D).

13 (a), the first, second and third printing patterns PT1, PT2, and PT3 are formed so that the four marks DM surround the periphery of the defect D in four directions. ) Is printed. On the other hand, in the printing pattern shown in Fig. 13 (b), the first, second and third printing patterns PT1, PT2 and PT3 are arranged so that the four marks DM surround the periphery of the defect D in three directions. Is printed. On the other hand, in the printing pattern shown in Fig. 13C, the first, second and third printing patterns PT1, PT2, PT3, and PT4 are formed so that the five marks DM surround the periphery of the defect D by two adjacent sides. PT3) are printed. On the other hand, in the printing pattern shown in Fig. 13 (d), the first, second and third printing patterns PT1, PT2, PT3 and PT4 are formed so that the six marks DM surround the periphery of the defect D, PT3) are printed. 13 (e), the first, second, and third print patterns PT1, PT2, and PT3 are formed so that the fourteen marks DM surround the periphery of the defect D with four sides, Is printed. On the other hand, in the printing pattern shown in Fig. 13 (f), the first, second and third printing patterns PT1 and PT2 (see Fig. 13) are formed so that the six marks DM surround the periphery of the defect D with two diagonally opposing sides , PT3) are printed. On the other hand, in the printing pattern shown in Fig. 13 (g), the first, second and third printing patterns PT1, PT2, and PT3 are formed so that the eight marks DM surround the periphery of the defect D in four directions. Is printed.

The recording apparatus 13 is disposed on the downstream side of the second defect inspection apparatus 12, but it is also possible to arrange the recording apparatus 13 on the downstream side of the first defect inspection apparatus 11. In this case, it is possible to record defect information by the recording apparatus 13 after defect inspection by the first defect inspection apparatus 11 is performed.

Further, the recording apparatus 13 is not limited to recording defect information after defect inspection described above. For example, in a long-distance conveyance line, a plurality of recording apparatuses are arranged to record distance information at a certain distance, and the distance is corrected based on the recorded distance information. The recording apparatus for recording such distance information may be disposed on the upstream side of the first defect inspection apparatus 11, for example.

The recording apparatus 13 is not limited to the configuration having the plurality of print heads 13a in which the plurality of nozzle units 13b are arranged side by side, , It is possible to perform marking on the defective portion regardless of the shape of the film or the transport direction by moving the print head.

The defect marking apparatus 10 is not limited to being a part of the film production apparatus 100 and can be a defect marking apparatus independent of the film production apparatus 100. [ Specifically, the double-side bonded film F105 is inspected for defects while the double-side bonded film F105 released from the third disk roll R3 is conveyed, and the double-side bonded film F105 is inspected based on the result of the defect inspection. It is possible to adopt a constitution in which marking is performed on the defective portion of the core member and then the core member is wound again on the core member.

Further, in the film production apparatus 100, marking may be performed on the defective portion in the additional processing step without marking the defective portion. Concretely, after a separate film is bonded to one or both surfaces of the double-sided bonded film F105 during transport of the double-sided bonded film F105 unrolled from the third disk roll R3, defects are inspected, Marking may be performed on the defective portion in accordance with the defect inspection result of the film production apparatus 100. [

The disc to be inspected (inspected object) of the present invention is not necessarily limited to optical films such as the polarizing film, the retardation film and the brightness enhancement film described above. The optical film may be a film, paper, Shaped long disk of the present invention.

Further, as a subject to be inspected (inspected object) of the present invention, a sheet (chip) obtained by cutting a long strip-shaped disk may be used. That is, the present invention is not limited to the case where defect inspection of the original is carried out during conveyance of the original, and marking is performed on the defective portion of the original based on the result of defect inspection, Marking may be performed on the defective portion of the sheet based on the defect inspection result. Further, the sheet may be subjected to a processing (for example, joining of separate films, surface treatment of the sheet, etc.) between the defect inspection of the sheet and the marking of the defective portion of the sheet. Accordingly, similarly to the case where the inspected object is a master, the defect marking method (apparatus) of the present invention can be used to display the position of the defect on the sheet as the inspected object, and information on the defect can be recorded. Furthermore, the present invention can be widely applied to those capable of applying the present invention in addition to the above-described disk or sheet.

The present invention relates to a film manufacturing apparatus and a method of manufacturing the same and a method of manufacturing the same and a method of manufacturing the same. A second accumulator 122a and a second accumulator 122b. The first accumulator 122a and the second accumulator 122b are disposed in the first accumulator 122a and the second accumulator 122b, respectively. A third nip roll, 141a, 141b, a fourth nip roll, 142 a third accumulator, 142a, 142b a third dancer roll, 143a a third dancer roll, 123a, 123b a second guide roll, 131a, 131b a third nip roll, A fourth guide roll, 151a and 151b: a fifth nip roll, 152: a fourth accumulator, 152a and 152b: a fourth dancer roll, 153a: a fifth guide roll, 153b: a sixth guide roll, 13: recording head (printing apparatus), 13a: printing head, 13b: nozzle unit (printing unit), 13: defective marking apparatus, 10: defective marking apparatus, 11: first defect inspection apparatus, 12: second defect inspection apparatus, 14: first side organ 15: second side organ 16: control device (control unit) 21a, 22a, 23a, 24 F102: optical film, F101: first film, F102: second optical film, F2: optical film, PT: First Printing Pattern, PT2: Second Printing Pattern, PT3: Second Printing Pattern, PT: Second Printing Pattern, PT3: Second Printing Pattern, Third factor pattern, D: defect, K: blank

Claims (20)

A defect marking method for marking a defective portion of an object to be inspected,
The first print pattern and the second print pattern are formed on the surface of the inspected object so that a defect is located between the first print pattern and the second print pattern which are adjacent to each other in a direction crossing one direction in the surface of the inspected object. And the position of the defect is indicated by printing the second factor pattern. The defect marking method according to claim 1, wherein information on the defect is recorded by one or both of the first pattern pattern and the second pattern pattern. 3. The defect marking method according to claim 2, wherein as one or both of the printing patterns, dot-like marks are printed in parallel in at least one direction or in a plurality of directions in the one direction. The defect marking method according to claim 2 or 3, characterized in that at least one or at least one linear mark is printed side by side as one or both of the printing patterns. The defect marking method according to claim 3 or 4, wherein the defect marking information is recorded by a factor pattern in which at least one of the number, spacing, size, and color of the marks is changed. The method according to any one of claims 3 to 5, wherein the position of the defect in the one direction is displayed by a printing pattern in which an interval of at least a part of a plurality of marks arranged in the one direction is changed Characterized by a defect marking method. The method according to claim 6, wherein a position of the defect in the one direction is displayed by disposing a blank space in which at least a part of the plurality of marks parallel to each other in the one direction is empty at a position adjacent to the defect Defect marking method. The printing method according to any one of claims 1 to 7, wherein in the other direction, by printing a third printing pattern adjacent to one or both of the first printing pattern and the second printing pattern, And recording the information. 9. The defect marking method according to any one of claims 1 to 8, characterized in that information about something other than the defect is recorded by the factor pattern. The defect marking method according to any one of claims 1 to 9, wherein printing is performed using an ink capable of erasing the printing pattern. 11. The defect marking method according to any one of claims 1 to 10, wherein marking is performed on a defective portion of a long strip-shaped disc conveyed in the one direction as the inspected object. 11. The defect marking method according to any one of claims 1 to 10, wherein marking is performed on a defective portion of the sheet obtained by cutting the long strip-shaped disc as the inspected object. A step of performing defect inspection on a long strip-shaped disc transported in one direction;
A method for manufacturing a disk, comprising the step of marking a defective portion of the disk using the defect marking method according to claim 11. A step of performing defect inspection on a sheet obtained by cutting a long strip-
A method for producing a sheet, comprising the step of marking a defective portion of the sheet using the defect marking method according to claim 12. And a marking device for marking a defective part of the inspected object,
Wherein the printing apparatus comprises a plurality of printing units arranged side by side at predetermined intervals in a different direction intersecting with one direction in the surface of the inspected object and printing a printing pattern on the surface of the inspected object, And a control unit for controlling driving of the printing unit,
The control section performs control to select a printing section that prints the first printing pattern and the second printing pattern so that a defect is positioned between the adjacent first printing pattern and the second printing pattern in the other direction . 16. The recording medium according to claim 15, wherein the control unit is operable to determine, for one or both of the selected printing units, one or both of the first printing pattern and the second printing pattern in accordance with information on the defect to be recorded And controls to change the pattern. As a long strip-shaped disc having a defective portion marked thereon,
Wherein the first and second print patterns are printed on the surface by the marking and have a first print pattern and a second print pattern adjacent to each other in a short length direction and a defect is positioned between the first print pattern and the second print pattern, And the position is indicated. The master according to claim 17, wherein information about the defect is recorded by one or both of the first pattern pattern and the second pattern pattern. A sheet marked on a defective portion,
A first printing pattern and a second printing pattern which are printed on the surface by the marking and are adjacent to each other in a direction intersecting with one direction and have a defect between the first printing pattern and the second printing pattern Wherein the position of the defect is indicated by its position. The sheet according to claim 19, wherein information about the defect is recorded by one or both of the first pattern pattern and the second pattern pattern.

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