JP2007260815A - Defect detecting and eliminating method and production method of sheet article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a defect detecting and eliminating method which includes: cutting a wide band article in accordance with information of a defect detection device after slitting the wide band article into narrow band articles; and rejecting only defected parts at a minimum in providing a sheet article, and also to provide a production method of the sheet article under this detect detecting and eliminating method. <P>SOLUTION: The defect detecting and eliminating method includes preventing mixture of the defected parts detected on the wide band article in making the wide band article into the sheet articles by cutting it in a cutting process after making it into the narrow band articles of specified width in a slipping process. The method also has: a defect detecting process of having the defect detection device 106a to detect defect of the wide band article; a defect information input process of inputting defect information of the wide band article provided in the defect detecting process to an information transmitting means; an adhering process of bonding the information transmitting means inputting the defect information, and a detect eliminating process of eliminating the defected points from the sheet articles in accordance with information of the information transmitting means bonded in the adhering process. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for detecting and removing a defect in a wide strip and a method for producing a sheet.

  Conventionally, after slitting from a wide strip to obtain a narrow strip, the product to be cut into a single sheet is, for example, a lithographic printing plate material, an anti-glare film and an anti-glare used in a liquid crystal image display panel. A variety of materials such as antireflection films, photographic materials, ink jet recording paper, offset printing machines or gravure printing machines, printed materials printed on various film supports, thermoplastic films such as triacetyl cellulose films and polyethylene terephthalate films Crossing.

  For example, in the case of a lithographic printing plate material, a raw material is produced in which an image forming layer and a protective layer are provided in this order on an aluminum substrate or film substrate of a wide band having a hydrophilic surface. A sheet material is produced by slitting with a predetermined width while pulling out a wide strip from the original fabric and then cutting it with a predetermined length. The sheet material produced in this way is accumulated by a predetermined number, packaged and packed, and then shipped as a product.

  In a wide strip for producing a sheet material, a defect such as a coating failure may occur during a production process such as a coating process, and this defect is produced by processing the wide strip. When mixed in, the quality of the sheet material is deteriorated. For this reason, it is necessary to prevent mixing of a sheet material having a defect and to prevent a product quality of the sheet material from being deteriorated.

  Usually, in order to inspect defects in these strips, an on-line type defect detection apparatus such as a laser flying spot inspection apparatus or a CCD (Charge Coupled Device) charge sensor inspection apparatus installed in the manufacturing process is used. Then, the defect of the wide strip being transported is detected, the position of the detected wide strip in the transport direction (measured from the reference point), the position of the wide strip in the width direction (of the object to be inspected) (Width from the edge) and defect information such as defect type is printed on the label with a printer, and the label is attached to the edge of the defective part, or the defective part is marked with a felt pen, laser, etc. Then, in the rewinding machine or processing machine in the subsequent process, stop the conveyance line at the label application position or marking position and visually check for defects. Observed, analyzed and judged.

  Also, as a method for removing defects (failures) on the wide strip, a color mark sensor is used to detect a label that has been pasted on the wide strip in advance to indicate the position of the defect, and after detecting the label. It is a general practice to discard the sheet material along the width direction of the wide belt-like object in which the defect is generated by tracking the amount of the sheet transported by counting with an encoder or the like. However, wide strips have defects that occur continuously (stripes) along the longitudinal direction at predetermined positions in the width direction. When such widths are discarded, the defect part is included. There is a problem that causes even a single sheet to be discarded and causes a reduction in production efficiency. A method for improving the production efficiency by discarding only defective portions without discarding originally usable portions has been studied. For example, the position of the defect is detected along the longitudinal direction of the web (corresponding to the wide band according to the present invention), and an index is given according to the position along the longitudinal direction of the detected defect. A method for removing a defective portion based on the information of the indicated index is known (see, for example, Patent Document 1).

  A first index capable of detecting a surface failure on the web (corresponding to the wide band according to the present invention) by the surface inspection means in the raw material production process and identifying the position of the surface failure in the web width direction and the longitudinal direction. The web is marked, the first index of the web is detected in the cutting process, the slit web including the surface failure identified from the index is identified, and the slit web (corresponds to the narrow strip according to the present invention) ) Is marked with a second index capable of specifying at least the position along the longitudinal direction of the slit web of the surface failure, and the sheet body produced in the cutting process is discarded based on the second index. (For example, refer to Patent Document 2).

  The methods described in Patent Document 1 and Patent Document 2 are effective as a method for discarding slit webs (corresponding to narrow strips according to the present invention) containing defects, but have the following drawbacks. . If there are multiple defects (for example, multiple scratches) in the width direction of the slit web, the slit web may be discarded, but it is rare that multiple scratches occur. Most of the cases are 1 to 2 in many cases. However, such a slit web with few defects can be sufficiently used as a single-wafer sheet if the position of the defect is removed, but the method described in Patent Document 1 and Patent Document 2 is discarded. This is one factor that prevents production efficiency from being increased.

From such a situation, after slitting the wide strip to make a narrow strip, the sheet is cut based on the information of the defect detection device, and when obtaining the sheet material, only the minimum defective portion is discarded. Therefore, it is desired to develop a defect detection / removal method for increasing production efficiency and a method for producing a sheet-like sheet by this defect detection / removal method.
JP 2005-106498 A JP 2005-238390 A

  The present invention has been made in view of the above situation, and its purpose is to obtain a single-wafer sheet-like material by slitting a wide-band material into a narrow-band material and then cutting based on information from the defect detection device. Another object is to provide a defect detection / removal method for discarding only the minimum defective portions, and a method for producing a sheet-like sheet by this defect detection / removal method.

  The above object of the present invention has been achieved by the following constitution.

  1. After the wide strip continuously conveyed is made into a narrow strip with a predetermined width in the slitting step, the narrow strip is cut into a predetermined length in the cutting step to form a sheet-like sheet, In a defect detection and removal method for preventing a defect portion detected in the wide strip from being included in a leaf sheet, a defect detection step having a defect detection device for detecting a defect in the wide strip, and the defect In the defect information input step for inputting the defect information of the wide strip obtained in the detection step to the information transmission means, the sticking step for sticking the information transmission means for inputting the defect information, and the sticking step. And a defect removing step of removing a defective portion from the sheet-like material in accordance with the information of the pasted information transmission means.

  2. In the attaching step, an information transmission means is attached to the edge of the narrow strip based on the information of the defect detection device in accordance with a predetermined cutting interval of the narrow strip, and thereafter, in the cutting step, the information transmitting means is attached. The narrow strip is cut into a predetermined length to obtain a single sheet, and the information transmission is performed on the single sheet to which the information transmission means is affixed. 2. The defect detection and removal method according to 1 above, further comprising a defect removal step of removing a defect portion according to information of the means.

  3. The defect information input step includes a first defect information input step and a second defect information input step, and in the first defect information input step, the defect information of the wide strip obtained by the defect detection device is the first. The information is input to the information transmission means, and in the second defect information input step, the information of the first information transmission means is read by the reading device of the reading process, and the obtained information is input to the second information transmission means. A first adhering step of adhering the first information transmitting means to the edge of the wide strip based on information of the defect detection device; and the second information transmitting means to the end of the narrow strip. A second adhering step for adhering to the side, and in the second adhering step, the narrow band-shaped material is based on information of the reading device in accordance with a predetermined cutting interval of the narrow band-shaped material. The second information transmission means is attached to the edge of the tape, and then the narrow band-like material is fixed to a predetermined length in a cutting process. The sheet is cut into a sheet-like material, and the defective portion of the single-wafer sheet-like material to which the second information transmission means is attached is determined according to the information of the second information transmission means. 2. The defect detection and removal method according to 1 above, further comprising a removal step of removing the defect.

  4). 4. The defect detection / removal method according to any one of the above items 1 to 3, wherein the information transmission means is a wireless tag (RFID).

  5. 5. The defect detection and removal method according to any one of 1 to 4, wherein the wide strip is a lithographic printing plate material.

  6). After the wide strip continuously conveyed is made into a narrow strip with a predetermined width in the slitting step, the narrow strip is cut into a predetermined length in the cutting step to form a sheet-like sheet, In the leaf sheet material, in the production method of the single sheet material in which the defect portion detected in the wide band material is prevented from being mixed, a defect detection step having a defect detection device for detecting the defect of the wide band material A defect information input step for inputting defect information of the wide strip obtained in the defect detection step to an information transmission means, an adhesion step for pasting the information transmission means for inputting the defect information, and the pasting And a removing step of removing the defective portion from the sheet-like material according to the information of the information transmission means attached in the attaching step.

  7). In the attaching step, an information transmission means is attached to the edge of the narrow strip based on the information of the defect detection device in accordance with a predetermined cutting interval of the narrow strip, and then the thin strip is cut in the cutting step. The wide band-like material is cut into a predetermined length to obtain a single-sheet sheet-like material, and the information-transmitting means for the single-wafer-sheet-like material to which the information-communication means is attached. 6. The method for producing a sheet-like sheet according to 6 above, wherein the defective portion is removed in a removing step according to the information of the above.

  8). The defect information input step includes a first defect information input step and a second defect information input step, and in the first defect information input step, the defect information of the wide strip obtained by the defect detection device is the first. The information is input to the information transmission means, and in the second defect information input step, the information of the first information transmission means is read by the reading device of the reading process, and the obtained information is input to the second information transmission means. A first adhering step of adhering the first information transmitting means to the edge of the wide strip based on information of the defect detection device; and the second information transmitting means to the end of the narrow strip. A second adhering step for adhering to the side, and in the second adhering step, the narrow band-shaped material is based on information of the reading device in accordance with a predetermined cutting interval of the narrow band-shaped material. The second information transmission means is attached to the edge of the tape, and then the narrow band-like material is fixed to a predetermined length in a cutting process. Cutting the sheet into sheet-like material, and removing the sheet-like material with the second information transmission means attached to the sheet-like material according to the information of the second information transmission means 7. The method for producing a sheet-like product according to 6 above, wherein the defective part is removed by

  9. The method for producing a sheet-like sheet according to any one of 6 to 8, wherein the information transmission means is a wireless tag (RFID).

  10. The method for producing a sheet-like sheet according to any one of 6 to 9, wherein the wide strip is a planographic printing plate material.

  After slitting a wide strip to make a narrow strip, the cutting is performed based on the information of the defect detection device, and when obtaining a sheet material, a defect detection and removal method for discarding only the minimum defective portions, and A production method of a sheet-like sheet by this defect detection and removal method can be provided, and the production efficiency can be improved.

  Embodiments of the present invention will be described with reference to FIGS. 1 to 9, but the present invention is not limited thereto.

  FIG. 1 is a schematic diagram of a manufacturing process for detecting a defect in a wide strip and slitting it into a narrow strip and then cutting to remove the defective portion from the single sheet to obtain a single sheet. is there. This figure will be described as an example in the case of a planographic printing plate material.

  In the figure, 1a represents a manufacturing process. The manufacturing process 1a includes a support supply process 101, a first coating process 102, a first drying process 103, a second coating process 104, a second drying process 105, a defect detection process 106, and a slip sheet sandwiching process 107. The slitting process 108, the sticking process 109, the cutting process 110, the first recovery process 111, the defect removal process 112, and the second recovery process 113 are provided. From the support supply process 101, the wide strip | belt-shaped support body 101c is drawn | fed out from the roll-shaped support body 101b wound up by the winding core 101a. The first coating step 102 includes a coating solution container 102a1, a pickup roll 102a3 for coating the image forming layer forming coating solution 102a2 on the wide band-shaped support 101c1, and a coating liquid excessively coated on the band-shaped support 101c. It has a coating apparatus 102a having a bar 102a4 to be scraped off. This figure shows a case where a so-called bar coating device is used, but the type of the coating device is not particularly limited. For example, a dip coating device, a roller coating device, a fountain coating device, a gravure coating device, a blade coating device, a slide coating device. Examples thereof include an apparatus and an extrusion coating apparatus. It is possible to select and use as appropriate according to the coating liquid to be used.

  In the first drying step 103, the amount of the solvent in the coating film of the belt-like support 101c on which the image forming layer forming coating solution 102a2 containing the solvent is applied and the coating film for the image forming layer is formed is adjusted according to need and dried. In this process, the image forming layer is formed, and the drying process may be partitioned in order to remove the solvent step by step. The solvent is preferably recovered for environmental protection and solvent reuse. The drying method in the first drying step 103 is not particularly limited, and examples thereof include hot air drying, far infrared drying, and combined use of hot air drying and far infrared drying.

  In the second coating step 104, a protective layer forming coating solution is applied on the image forming layer formed in the first drying step 103 by the coating device 104a to form a protective layer forming coating film. In this figure, since the coating device 104a is the same as the coating device 102a in the first coating step 102, the description thereof is omitted. Of course, the coating device 104a can be changed as necessary.

  In the second drying step 105, the amount of the solvent in the coating film of the belt-like support 101c on which the protective layer-forming coating solution containing the solvent is applied and the protective layer-forming coating film is formed is adjusted and dried as necessary. This is a process for producing a printing plate material, and the drying process may be compartmentalized in order to remove the solvent step by step. At the stage where the second drying step 105 is completed, a wide-band lithographic printing plate material is produced.

  In the defect detection step 106, a surface inspection of the lithographic printing plate material having a wide strip is performed. The defect detection step 106 has a defect detection device 106a, and information transmission means (not shown) prepared in the pasting step 109 for defect information of the lithographic printing plate material of the wide strip detected by the defect detection device 106a. This also serves as a defect information input process to be input to (). The information transmission means is not particularly limited, and examples thereof include a display label, a barcode, and a wireless tag (RFID). Among these, a wireless tag (RFID) is particularly preferable from the viewpoint of handling property, information writing property, information amount, and the like. The wireless tag (RFID) used in the present invention has at least a semiconductor memory and a coil for transmission / reception, and is configured so as to be able to exchange information without contact with an external dedicated reader / writer. For example, the wireless tag according to the present invention may be processed into a seal shape and attached to an insulator. Specific examples of the seal-like wireless tag include Contactless Smart Label manufactured by Vanske, (Accumave, OMH-4230) manufactured by Dai Nippon Printing Co., Ltd., and the like. The defect detection step 106 will be described in detail with reference to FIG.

  The slip sheet sandwiching step 107 is a step of stacking a slip sheet 107a on the protective layer for protecting the lithographic printing plate material of the wide band and preventing the sticking between the protective layer and the back of the support when stacked. is there.

  In the slitting step 108, a slitting device 108a cuts into a predetermined width to obtain a lithographic printing plate material of a wide sheet from a wide lithographic printing plate material to obtain a lithographic printing plate material of a narrow band. It is a process. The cutting by the slitting device 108a is performed in a state where the interleaf paper 107a is stacked on the protective layer.

  The adhering step 109 has an adhering device 109a, and the information transmission means for inputting the defect information of the lithographic printing plate material of the wide strip detected by the defect detecting device 106a is used as the information of the lithographic printing plate material of the narrow strip. Adhere to the edge on the back side. Note that the sticking of the information transmission means by the sticking device 109a is performed based on defect information input from the defect detection device 106a to the sticking device 109a in accordance with a preset cutting interval.

  The position where the sticking step 109 is disposed is preferably immediately after the slitting step 108 in consideration of sticking stability of the information transmission means, sticking position, and the like. Further, the positional relationship between the defect detection step 106 and the sticking step 109 is preferably as close as possible. For example, when the conveyance speed is 10 to 200 m / min, fluctuations in the conveyance speed and lateral displacement of the strip In consideration of the above, a position within 5 seconds from immediately after cutting is preferable.

  In the cutting process 110, the lithographic printing plate material of the narrow band material cut in the slitting process 108 is formed at a predetermined cutting interval in a state where the slip sheets 107a are stacked on the protective layer by the cutting apparatus 110a. It is a process of cutting together and making a lithographic printing plate material of a sheet-like sheet.

  In the first collection step 111, a first collection device that reads information transmission means attached to a lithographic printing plate material of a sheet-like sheet with a reading device (not shown), and sorts without and with the information transmission means. 111a and a second recovery device 111b. The first collection device 111a collects a lithographic printing plate material (a lithographic printing plate material in which any defect has been detected) 111d 'to which information transmission means is attached, and the second collection device 111b transmits information. A lithographic printing plate material (a lithographic printing plate material having no defect) as a sheet-like sheet to which no means is attached is collected. Of course, the roles of the first recovery device 111a and the second recovery device 111b may be reversed.

  The method of collecting is not particularly limited, and for example, it may be manually stacked, collected in a box, and automatically stacked on a box or a collection table. This figure has shown the case where it piles up on the collection stand 111c (111c '). When stacking on the collection table 111c (111c '), the collection table 111c (111c') is provided with a vertical movement function so that the uppermost sheet material on the collection table 111c (111c ') It is preferable that the height of the surface of the planographic printing plate material 111d (111d ') and the recovery device are always equal.

  The defect removal step 112 is pasted from a lithographic printing plate material (a lithographic printing plate material in which some defect is detected) of a sheet-like sheet on which the information transmission means collected in the first collection step is stuck. This is a step of removing a defective portion and obtaining a lithographic printing plate material of a required sheet size based on information from the information transmission means.

  The defect removal step 112 includes a feeding step 112a of a lithographic printing plate material 111d ′ of a sheet-like sheet to which an information transmission unit is attached, a reading step 112b of the information transmission unit, and a cutting step 112c. . In the supply step 112a, the lithographic printing plate material 111d 'of the sheet-like sheet on the collection table 111c' is sent to the reading step 112b by the supply robot (not shown) by the supply device 112a1 one by one. In the reading step 112b, the information transmission means attached to the back surface of the planographic printing plate material 111d ′ is read by the reading device 112b1, and the type, position, size, etc. of the defective portion are specified, and the information of the reading device 112b1 is stored. This is fed back to the cutting device in the cutting step 112c. In the cutting step 112c, according to the information from the reading device 112b1, the defective portion is removed by the vertical cutting device 112c1 and the transverse cutting device 112c2, and the size is reduced and the product is made good. The reading device 112b1 is not particularly limited. For example, when the information transmission means is RFID, an electromagnetic coupling type or radio wave type reader is used, and when the bar code label is used, a fixed scanner using a semiconductor laser is used. It is done. Note that the defect removal step 112 shown in the figure shows the case of continuous automation, but of course may be a batch type. For example, since the lithographic printing plate material 111d ′ of the sheet-like material to which the information transmission means collected in the first collection step 111 is attached is a fixed number, the information transmission means is read by the reading device, and the size of each defect is determined. Classify into: The lithographic printing plate material 111d ′ of sheet-like sheets classified according to the size of the defect may be cut at once by a cutting device to reduce the size and make it non-defective.

  The second recovery step 113 includes a first recovery device 113a and a second recovery device 113b. The first recovery device 113a recovers the lithographic printing plate material 113d ', which has many defects and cannot be made good, and the second recovery device 113b returns the lithographic printing plate material 113d which is a sheet-like sheet that has been made defective by removing the defective portion. It has come to be collected. Of course, the roles of the first recovery device 113a and the second recovery device 113b may be reversed.

  The method of collecting is not particularly limited, and for example, it may be manually stacked, collected in a box, and automatically stacked on a box or a collection table. This figure has shown the case where it piles up on the collection stand 113c (113c '). When stacking on the collection table 113c (113c '), the collection table 113c (113c') is provided with a vertical movement function so that the uppermost sheet material on the collection table 113c (113c ') It is preferable that the height of the planographic printing plate material and the collection device are always equal.

  FIG. 2 is an enlarged schematic perspective view of a portion indicated by R in FIG.

  The defect detection device 106a includes a reflection type used for a lithographic printing plate material using a support that does not transmit light, such as aluminum, and a lithographic printing plate material that uses a support that transmits light, such as a transparent thermoplastic resin. The transmissive type used in the inspection can be used depending on the state of the object to be inspected. Of course, it is possible to use only one of the reflection type and the transmission type, and it can be set according to the actual situation. Reference numeral 106a1 denotes a reflected light detecting light receiver, and reference numeral 106a2 denotes a reflected light projector, which constitutes a reflection type defect detection apparatus. Reference numeral 106a'1 denotes a transmitted light detecting light receiver, and 106a'2 denotes a transmitted light projector, which constitutes a transmission type defect detection apparatus.

  The defect detection device 106a performs defect detection on the entire width of the image forming layer and the protective layer formed on the wide belt-like support 101c. Defect detection is performed for defects exceeding the defect threshold value input to the defect detection device 106a, processed by an information processor (not shown) having a memory and a CPU connected to the defect detection device, and XY. Position information, defect type, and the like are input as defect information to information transmission means (not shown) prepared in the sticking step 109 (see FIG. 1).

  The defect detection apparatus shown in the figure is not particularly limited, and a commercially available defect detection apparatus can be used. For example, as a defect detection apparatus, a SCANTEC series defect inspection system manufactured by Nagase Sangyo Co., Ltd., MaxEye. AQuO is mentioned.

  FIG. 3 is an enlarged schematic perspective view of a portion indicated by S in FIG.

  The slitting device 108a has a rotating upper blade portion 108a1 and a rotating lower blade portion 108a2 to form a cutting unit. The upper blade portion 108a1 has a disk-shaped upper blade 108a11 attached to the rotary shaft 108a12. The lower blade portion 108a2 is a donut-shaped lower blade 108a21 attached to the rotary shaft 108a22. The number of attached disc-shaped upper blades 108a11 can be changed depending on the width to be cut, and this figure shows the case of four. In the slitting apparatus 108a, a wide belt-like support 101c (lithographic printing plate material) having an image forming layer and a protective layer is laminated on the protective layer in the interleaf sandwiching step 107 (see FIG. 1). The paper 107a is cut into a narrow width from above. 101c3 to 101c5 indicate unnecessary portions and are collected. Reference numeral 101c1 (101c2) denotes a wide belt-like support (lithographic printing plate material) which is cut into a thin width and has an image forming layer and a protective layer. Cut into printing plate material.

  O (P) indicates information transmission means that is attached to the edge on the back side by the attaching device 109a in the attaching step 109. The information transmission means O (P) receives the defect information of the lithographic printing plate material of the wide strip detected by the defect detection device 106a (see FIG. 2).

The sticking of the information transmission means by the sticking device 109a is performed at an interval for cutting into a planographic printing plate material of a sheet-like sheet in the cutting step 110 (see FIG. 1). In this figure, the information transmission means O and the information sticking device 109a are not particularly limited, and examples thereof include a label type and electromagnetic coupling type read / write type RFID tag. The interval with the transmission means P is an interval for cutting. The method for attaching the information transmission means is not particularly limited, and for example, a commercially available auto labeler can be used.

  The slitting device is not particularly limited, and the slitting device shown in this figure is a cutting method using a rotating upper blade and a lower blade. Published by Japan Packaging Machinery Manufacturers Association Packaging Machinery and Mechanism (new edition) 1986 This is a slitting device of a so-called shear cut method as described on pages 430 to 431.

  FIG. 4 is a schematic flowchart showing from defect detection to defect removal performed from the defect detection step to the defect removal step shown in FIG.

  This figure shows a defective portion A when a lithographic printing plate material Y of a wide strip in a state where the defective portions indicated by A to E exist on the surface has been conveyed to the defect detection step 106 shown in FIG. The process of removal based on the information of defect detection of ~ E is shown. L indicates a predetermined cutting line to be cut in the cutting step 110 shown in FIG. The defect location A exists from the end side and indicates a long streak-like defect exceeding the planned cutting line. B exists in the position which becomes a product, and shows the long streak-like defect exceeding a cutting plan line. C indicates a short streak-like defect at a position for commercialization. D indicates a point-like defect. E indicates an elliptical defect.

  S <b> 1 indicates a state in which the defect locations A to E are detected by the defect detection device 106 a in the defect detection step 106 (see FIG. 1). In the defect detection device 106a (see FIG. 2), the defective portion A is detected by the defect detection device 106a, but the slitting device 108a in the slitting process 108 is detected from the detected position information input to the information processing device (not shown). It is determined that it is present at a position that becomes an unnecessary object when it is cut. The defect portion B is detected by the defect detection device 106a, and is determined to be a long defect portion that exceeds the planned cutting line from the detection position information input to the information processor (not shown). The defect portion C is detected by the defect detection device 106a, and is determined to be a short defect portion that does not exceed the planned cutting line from the detection position information input to the information processor (not shown). The defect portion D is detected by the defect detection device 106a, and is not determined as a defect from the threshold information input to the information processor (not shown). The defect portion E is detected by the defect detection device 106a, and is determined to be a defect from threshold information input to an information processor (not shown). Information regarding these defect locations A to E is input as defect information to information transmission means (not shown) prepared in the sticking step 109 (see FIG. 1), for example, as shown below.

  Since the defective part A is located at an unnecessary position, it is not input to the information transmission means. Since the defect portion B is a long defect portion that exceeds the cutting line, the start position, end point position, and width direction position of the defect portion B are input to the information transmission unit. It is input to the information transmitting means that the defect portion C exists in the same range as the position in the width direction, the position in the transport direction, and the defect portion B. Since the defect portion D is not determined as a defect from the threshold information, it is not input to the information transmission means. Since the defect location E is determined to be a defect from the threshold information, the position, size, shape, etc. are input to the information transmission means. The term “within the same range” means that the sheet is cut into a narrow width and enters a single sheet material when the sheet is further cut into sheets. After the defect detection is completed by the defect detection device 106a, the slip sheets 107a (see FIG. 1) are stacked on the protective layer in the slip sheet sandwiching step 107 (see FIG. 1).

  In S2, the narrow strip-shaped article is formed in a state where the slip sheet 107a (see FIG. 1) is stacked on the protective layer by the slitting apparatus 108a (see FIG. 2) in the slitting step 108 (see FIG. 1). The planographic printing plate material Y1 (Y2) is cut, and the information transmitting means is attached to the end of the back side of the planographic printing plate material Y1 (Y2) by the sticking device 109a (see FIG. 1) in the sticking step 109 (see FIG. 1). The state stuck on the side is shown. X1 indicates an information transmission unit in which defect information of the defect B and the defect C is input, X2 indicates an information transmission unit in which the defect information of the defect B is input, and X3 indicates defect information of the defect E Indicates an information transmission means.

  S3 is a state in which the planographic printing plate material Y1 (Y2) is cut at the position of the predetermined cutting line L in the cutting apparatus 110a (see FIG. 1) in the cutting step 110 (see FIG. 1). Show. Y11 indicates a sheet-like lithographic printing plate material cut from the lithographic printing plate material Y1 having the information transmission means X1 attached to the edge. Y12 indicates a sheet-like lithographic printing plate material cut from the lithographic printing plate material Y1 having the information transmission means X2 attached to the edge. Y21 indicates a sheet-like lithographic printing plate material cut from the lithographic printing plate material Y2 determined to have no defect. Y22 indicates a sheet-like lithographic printing plate material cut from the lithographic printing plate material Y2 having the information transmission means X3 attached to the edge.

  In S4, the sheets collected in the first collection step 111 (see FIG. 1) are divided into the lithographic printing plate material to which the information transmission means is attached and the lithographic printing plate material to which the information transmission means is not attached. The state which removed the defective part in the defect removal process 112 (refer FIG. 1) from the lithographic printing plate material to which the information transmission means was affixed among leaf-sheet-like lithographic printing plate materials is shown. The planographic printing plate materials Y11, Y12, and Y22 to which the information transmission means are attached are read by the information transmission means attached by the reading device 112b1 (see FIG. 1), and it is determined whether the product can be made non-defective. In this figure, when the lithographic printing plate material Y11 removes the defective portion B and the defective portion C from the defect information of the defective portion B and the defective portion C, the size that becomes a non-defective product becomes small and is not suitable for commercialization. It is determined that conversion is not possible. The planographic printing plate material Y12 is reduced in size by removing the defective portion B, and the planographic printing plate material Y22 is removed by removing the defective portion E. It is determined to be acceptable. The planographic printing plate material Y12 and the planographic printing plate material Y22 are cut by the cutting device in the cutting step 112c (see FIG. 1), and the planographic printing plate material Y13 from which the defective portion B has been removed and the planographic printing from which the defective portion E has been removed The plate material Y23 is obtained as a non-defective product.

The following effect is mentioned by removing a defect location from the lithographic printing plate material of the sheet-like sheet | seat which has a defect by the defect detection removal method shown in FIGS.
1) It has become possible to reduce the amount of waste that has been disposed of in the past, and to improve production efficiency.
2) By using RFID as an information transmission means, photosensitive materials that cannot be tested for defects in bright places (lithographic printing plate materials, photographic photosensitive materials) can be easily tested for defects in a dark room, improving work efficiency. As a result, production efficiency can be improved.

  FIG. 5 is a schematic diagram of another manufacturing process for detecting a defect in a wide strip and slitting it into a narrow strip and then cutting to remove the defective portion from the single sheet to obtain a single sheet. FIG. This figure will be described as an example in the case of a planographic printing plate material.

  In the figure, 1b represents a manufacturing process. The manufacturing process 1b includes a support supply process 101, a first coating process 102, a first drying process 103, a second coating process 104, a second drying process 105, a defect detection process 106, and a first sticking process 114. A slip sheet sandwiching step 107, a reading step 115, a slitting step 108, a second sticking step 109 ', a cutting step 110, a first recovery step 111, a defect removal step 112, and a second recovery step. Step 113.

  The difference between the manufacturing process 1b shown in this figure and the manufacturing process 1a shown in FIG. 1 is that a first sticking process 114 disposed after the defect detection process 106 and a reading process 115 disposed before the slitting process 108. And a second sticking step 109 '. The other steps are the same as those in the manufacturing process 1a shown in FIG.

  In the defect detection step 106, a surface inspection of the lithographic printing plate material having a wide strip is performed. The defect detection step 106 includes a defect detection device 106 a, and information transmission means (prepared in the first sticking step 114 for the defect information of the lithographic printing plate material of the wide strip detected by the defect detection device 106 a ( In the present invention, it also serves as a defect information input step for inputting to (not shown) as the first information means. The first defect information means U (see FIG. 7) to which the defect information is input is attached to the edge of the lithographic printing plate material of the wide strip by the first attaching device 114a in the first attaching step 114. . The first information transmission unit U (see FIG. 7) is not particularly limited, and examples thereof include a display label, a barcode, and a wireless tag (RFID). Among these, a wireless tag (RFID) is particularly preferable from the viewpoint of handling property, information writing property, information amount, and the like. The first sticking step 114 will be described in detail with reference to FIG.

  In the reading step 115, the first information transfer means U (see FIG. 7) attached to the edge of the lithographic printing plate material of the wide band in the first attaching step 114 is read by the reading device 115a, and the second attaching is performed. It also serves as a defect information input step for inputting to the information transmission means (in the present invention, the second information means) (not shown) prepared in step 109 ′.

  The position where the reading device 115a is disposed in the reading step 115 is preferably between the slip sheet sandwiching step 107 and the slitting step 108, and is preferably as close to the slitting step 108 as possible. For example, when the conveyance speed is 10 to 200 m / min, 0 to 5 seconds before cutting by the slitting apparatus in the slitting process 108 in consideration of fluctuations in the conveyance speed, lateral displacement of the strips, and the like. Position is preferred. The reading device 115a is not particularly limited. For example, when the information transmission means is an RFID, an electromagnetic coupling type or radio wave type reader is used, and in the case of a bar code label, a fixed scanner using a semiconductor laser or the like. Is mentioned.

  The second adhering step 109 'includes a second adhering device 109'a, and the second information transmission means W1 (W2) (see FIG. 8) is arranged on the back side of the lithographic printing plate material of the narrow strip. Adhere to the edge. The second information transmission means W1 (W2) (see FIG. 8) by the second sticking device 109′a is pasted from the reading device 115a to the second sticking device in accordance with a preset cutting interval. This is performed based on the defect information input to 109'a.

  The position where the sticking step 109 ′ is disposed is preferably immediately after the slitting step 108 in consideration of the sticking stability of the information transmission means, the sticking position, and the like. Further, the positional relationship between the defect detection step 106 and the sticking step 109 ′ is preferably as close as possible. For example, when the conveyance speed is 10 to 200 m / min, the fluctuation of the conveyance speed, the position of the strip in the lateral direction, and the like. In consideration of misalignment and the like, a position within 5 seconds immediately after cutting is preferable.

  The defect removal step 112 is pasted from a lithographic printing plate material (a lithographic printing plate material in which some defect is detected) of a sheet-like sheet on which the information transmission means collected in the first collection step is stuck. This is a step of removing a defective portion and obtaining a lithographic printing plate material of a required sheet size based on information from the information transmission means.

  The defect removing step 112 includes a step 112a of supplying the planographic printing plate material 111d ′ of the sheet-like sheet to which the second information transmission means W1 (W2) (see FIG. 8) is attached, and the second information transmission means W1. (W2) has a reading step 112b (see FIG. 8) and a cutting step 112c.

  In the supply step 112a, the lithographic printing plate material 111d 'of the sheet-like sheet on the collection table 111c' is sent to the reading step 112b by the supply robot (not shown) by the supply device 112a1 one by one. In the reading step 112b, the second information transmission means W1 (W2) (see FIG. 8) attached to the back surface of the planographic printing plate material 111d ′ is read by the reading device 112b1, and the type, position, and size of the defective portion are read. The information of the reading device 112b1 is fed back to the cutting device in the cutting step 112c. In the cutting step 112c, according to the information from the reading device 112b1, the defective portion is removed by the vertical cutting device 112c1 and the transverse cutting device 112c2, and the size is reduced and the product is made good. The reading device 112b1 is preferably the same as the reading device 115a.

  Note that the defect removal step 112 shown in the figure shows the case of continuous automation, but of course may be a batch type. For example, since a certain number of the lithographic printing plate materials 111d ′ of the sheet-like sheet to which the second information transmission means collected in the first collection step 111 is stuck, the second information transmission means is read by the reading device, Sort by size. The lithographic printing plate material 111d ′ of sheet-like sheets classified according to the size of the defect may be cut at once by a cutting device to reduce the size and make it non-defective. Other reference numerals are the same as those in FIG.

  In addition, it is preferable to control the manufacturing process shown by this figure with an information processor. For example, among the manufacturing processes, the defect detection process 106, which is a process related to defect detection, the first sticking process 114, the reading process 115, the second sticking process 109 ', and the cutting process 110 are performed by a memory and a CPU. Control with an information processing machine having An outline in the case where these defect detection processes are controlled by an information processor having a memory and a CPU will be described with reference to FIG.

  FIG. 6 is a schematic block diagram showing the relationship among the members constituting the process related to defect detection in the manufacturing process of FIG.

  The defect information of the planographic printing plate material detected by the defect detection device 106a is input to the information processing device and processed, and the XY position information, the type of defect, etc. are prepared in the first attaching step 114 as defect information. Input to the first information transmission means. The information processor controls the first sticking device 114a according to the calculated information, and sticks the first information transmitting means on the edge of the protective layer formed on the wide belt-like support 101c.

  The reading device 115a reads the first information transmission unit and inputs the read information to the information processing device. The information processing device performs arithmetic processing on the input information and inputs the information to the second information transmission means. The information processing device controls the second sticking device 109'a according to the information from the processing-reading device 115a, and sticks the second information transmitting means to the back side edge of the narrow belt-like support 101c. . The cutting apparatus cuts the narrow belt-like support body 101c at a cutting interval input in advance to the information processing apparatus. Of course, it is also possible to connect the reading device 112b1 in the defect removal step 112 and the cutting device to an information processing device and control the cutting device according to the information of the reading device 112b1.

  FIG. 7 is an enlarged schematic perspective view of a portion indicated by T in FIG.

  The defect detection device 106a performs defect detection on the entire width of the image forming layer and the protective layer formed on the wide belt-like support 101c. The defect detection is performed for a defect exceeding the defect threshold value input to the defect detection device 106a, and is prepared as the defect information in the first attaching step 114 by the information processing device (see FIG. 6). It is input to information transmission means (not shown). The 1st sticking process 114 has the 1st sticking apparatus 114a, and the 1st information transmission means U into which defect information was inputted is protection formed on the wide belt-like support body 101c by the 1st sticking apparatus 114a. Affixed on the edge of the layer. The first sticking device 114a is connected to an information processing device (not shown) connected to the defect detection device 106a, and sticking of the first information transmission means U is controlled by the information processing device (not shown). It is preferable.

  The first sticking device 114a is preferably the same as the sticking device 109a shown in FIG. The method for attaching the first information transmission means U is not particularly limited, and examples thereof include a method using a labeler with a label with RFID, and a method for directly attaching the RFID with an adhesive function. The other symbols are the same as those in FIG.

  FIG. 8 is an enlarged schematic perspective view of a portion indicated by V in FIG.

  The first information transmission means U is read by the reading device 115a of the reading step 115, and the read information is prepared in the second sticking step 109 'via the information processing device (see FIG. 6). 2 Input to information transmission means.

  The first information transmission means U is processed in accordance with the end where the first information transmission means U is attached is processed as an unnecessary part in the slitting step 108. The second information transmission means to which the information of the first information transmission means U has been input is attached to the edge of the back surface of the strip-shaped support (lithographic printing plate material) cut into a narrow width by the second attaching device. . The sticking is performed in accordance with an interval for cutting the lithographic printing plate material in a sheet-like sheet in the cutting step 110 (see FIG. 5). W1 (W2) indicates a second information transmission means attached to the edge of the back surface of the strip-shaped support (lithographic printing plate material) cut into a narrow width. The method of sticking the second information transmission means is preferably the same method as the first information transmission means. Other symbols are the same as those in FIG.

  FIG. 9 is a schematic flowchart showing from defect detection to defect removal performed from the defect detection step to the defect removal step shown in FIG.

  This figure shows a defect portion F when a wide-band lithographic printing plate material K in a state where the defect portions indicated by F to J are present on the surface is conveyed to the defect detection step 106 shown in FIG. The process of removal based on the defect detection information of ~ J is shown. M indicates a predetermined cutting line to be cut in the cutting step 110 shown in FIG. F indicates a long streak-like defect that exists at a position to be commercialized and exceeds the cutting line. G indicates a short streak-like defect at a position for commercialization. H indicates a point-like defect. I indicates a short streak-like defect at a position for commercialization. J indicates an elliptical defect.

  S1 shows a state in which the defect locations A to E are detected by the defect detection device 106a in the defect detection step 106 (see FIG. 5). In the defect detection device 106a (see FIG. 7), the defect portion F is detected by the defect detection device 106a, and a long defect portion that exceeds the planned cutting line from the detection position information input to the information processor (not shown) Determined. The defect portion G is detected by the defect detection device 106a, and is determined as a short defect portion that does not exceed the cutting line from the detection position information input to the information processor (not shown). The defect portion H is detected by the defect detection device 106a, and is not determined as a defect from the threshold information input to the information processor (not shown). The defect location I is detected by the defect detection device 106a, and is determined to be a short defect location that does not exceed the planned cutting line from the detection position information input to the information processor (not shown). The defect portion J is detected by the defect detection device 106a, and is determined to be a defect from threshold information input to an information processor (not shown).

  These pieces of information on the defective portions F to J are input as defect information to information transmitting means (not shown) prepared in the first sticking step 114 (see FIG. 5), for example, as shown below. Since the defect portion F is a long defect portion that exceeds the cutting line, the start position, the end point position, and the width direction position of the defect portion F are input to the information transmission unit. It is input to the information transmission means that the defect portion G exists in the same range as the position in the width direction, the position in the transport direction, and the defect portion F. Since the defect location H is not determined to be a defect from the threshold information, it is not input to the information transmission means. It is input to the information transmission means that the defect location I exists in the same range as the position in the width direction, the position in the transport direction, and the defect location J. Since the defect portion J is determined to be a defect from the threshold information, the position, size, shape, and the like are input to the information transmission means. After the defect detection is completed by the defect detection device 106a, the slip sheets 107a (see FIG. 5) are stacked on the protective layer in the slip sheet sandwiching step 107 (see FIG. 5).

  In S2, the edge of the lithographic printing plate material K in the form of a wide band is obtained by the first information transfer means to which the defect information detected by the defect detection device 106a is input by the first bonding device 114a of the first bonding step 114. The state stuck on the side is shown. Z1 indicates the first information transmission means to which the information on the defective part F is input. Z2 indicates a first information transmission means to which information on the defective part G is input. Z3 indicates the first information transmission means to which the information on the defective part I is input. Z4 indicates the first information transmission means to which the information on the defective portion J is input.

  S3 is a lithographic printing plate of a narrow strip in which the second information transmitting means Z′1 to Z′3 are cut by the slitting device 108a (see FIG. 8) in the slitting step 108 (see FIG. 5). The state stuck on each back side edge of material K1 (K2) is shown. The second information transmission means Z′1 to Z′3 are the first information transmission means Z1 to Z4 attached to the edge of the lithographic printing plate material K as a wide band by the reading device 115a of the reading step 115. Information read and processed by an information transmission means (not shown) is input to the second information transmission means prepared in the second sticking step 109 '. The second information transmission means Z′1 is input with information regarding the defective part F and the defective part G. The second information transmission means Z′2 is input with information regarding the defective part F. The second information transmission means Z′3 is input with information regarding the defective part I and the defective part J.

  S4 is a state in which the planographic printing plate material K1 (K2) is cut at the position of the predetermined cutting line M in the cutting device 110a (see FIG. 5) in the cutting step 110 (see FIG. 5). Show. K11 indicates a sheet-like lithographic printing plate material cut from the lithographic printing plate material K1 having the second information transmission means Z′1 adhered to the edge. K12 indicates a sheet-like lithographic printing plate material cut from the lithographic printing plate material K1 having the second information transmission means Z′2 adhered to the edge. K21 indicates a sheet-like lithographic printing plate material cut from a portion of the lithographic printing plate material K2 determined to have no defect. K22 indicates a sheet-like lithographic printing plate material cut from the lithographic printing plate material K2 having the second information transmission means Z′3 adhered to the edge.

  S5 is divided into a lithographic printing plate material to which the second information transmission means is attached and a lithographic printing plate material to which the second information transmission means is not attached in the first recovery step 111 (see FIG. 5). The state which removed the defect location from the lithographic printing plate material in which the 2nd information transmission means was affixed in the defect removal process 112 (refer FIG. 5) among the collect | recovered sheet-like lithographic printing plate materials is shown. . The planographic printing plate materials K11, K12, and K22 to which the information transmission means is attached are read by the second information transmission means attached by the reading device 112b1 (see FIG. 5), and it is determined whether or not the product can be made non-defective. . In this figure, when the lithographic printing plate material K11 removes the defect portion F and the defect portion G from the defect information of the defect portion F and the defect portion G, the size of the non-defective product becomes small and unsuitable for commercialization. It is determined that conversion is not possible. The size of the planographic printing plate material K12 is reduced by removing the defective portion F, and the size of the planographic printing plate material K22 is reduced by removing the defective portion I and the defective portion J, but the size of the non-defective product maintains the size as a product. Therefore, it is determined that the product is acceptable. The lithographic printing plate material K12 and the lithographic printing plate material K22 are cut by the cutting device in the cutting step 112c (see FIG. 5), and the lithographic printing plate material K13 from which the defective portion F is removed, the defective portion I and the defective portion J are obtained. The removed lithographic printing plate material K23 and lithographic printing plate material K24 are obtained as good products.

The following effects can be obtained by removing the defective portion from the lithographic printing plate material having a defect by the defect detection and removal method shown in FIGS.
1) It has become possible to reduce the amount of waste that has been disposed of in the past, and to improve production efficiency.
2) Even if the slitting process is long from the defect detection process, it is possible to remove defects stably by re-reading and re-sticking the information transmission means, increasing the design tolerance of the manufacturing process, and maintaining / A line design that is easy to inspect has become possible.

  Examples of the wide strip according to the present invention include, for example, lithographic printing plate materials, antiglare films and antiglare antireflection films used in liquid crystal image display panels, photographic photosensitive materials, ink jet recording paper, offset printing machines, and gravure printing machines. And thermoplastic resin films such as paper, printed matter printed on various film supports, triacetyl cellulose film, polyethylene terephthalate film, and the like. Examples of the lithographic printing material used in the present invention include JP-A-8-160608, JP-A-2003-233182, JP-A-2003-241367, and JP-A-2004-45447.

FIG. 5 is a schematic diagram of a manufacturing process for detecting a defect in a wide strip and slitting to form a narrow strip and then cutting to remove the defective portion from the single sheet to obtain a single sheet. It is an expansion schematic perspective view of the part shown by R of FIG. It is an expansion schematic perspective view of the part shown by S of FIG. FIG. 2 is a schematic flow diagram showing from defect detection to defect removal performed from a defect detection step to a defect removal step shown in FIG. 1. It is a schematic diagram of another manufacturing process for detecting a defect in a wide strip and slitting to form a narrow strip and then cutting to remove the defective portion from the single sheet to obtain a single sheet. . FIG. 6 is a schematic block diagram showing a relationship between members constituting a process related to defect detection in the manufacturing process of FIG. 5. It is an expansion schematic perspective view of the part shown by T of FIG. It is an expansion schematic perspective view of the part shown by V of FIG. FIG. 6 is a schematic flowchart showing from defect detection to defect removal performed from the defect detection step to the defect removal step shown in FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Manufacturing process 101 Support body supply process 102 1st coating process 103 1st drying process 104 2nd coating process 105 2nd drying process 106 Defect detection process 106a, 106a'1 Defect detection apparatus 106a1, 106a'1 Reflected light detection Light receiving device 106a2, 106a'2 Transmitted light projector 107 Interleaving paper sandwiching process 108 Slitting process 109 Adhering process 109 'Second adhering process 109a, 109'a Adhering device 110, 112c Cutting process 111 First recovery process 111d , 111d 'Planographic printing plate material 112 Defect removal process 112b1, 115a Reader 113 Second recovery process 114 First sticking process 115 Reading process AE, FJ Defect location

Claims (10)

After the wide strip continuously conveyed is made into a narrow strip with a predetermined width in the slitting step, the narrow strip is cut into a predetermined length in the cutting step to form a sheet-like sheet, In the leaf sheet-like material, in the defect detection and removal method for preventing the contamination of the defective portion detected in the wide-band material,
A defect detection step having a defect detection device for detecting defects in the wide strip;
Defect information input step for inputting the defect information of the wide strip obtained in the defect detection step into an information transmission means;
A sticking step of sticking the information transmission means that has input the defect information;
And a defect removal step of removing a defect portion from the sheet-like material according to the information of the information transmission means attached in the attachment step. In the attaching step, an information transmission means is attached to the edge of the narrow strip based on the information of the defect detection device according to a predetermined cutting interval of the narrow strip.
After this, the narrow strip is cut into a predetermined length in a cutting step to form a sheet-like sheet,
A defect removing step of removing a defective portion in accordance with information of the information transmission means on the single-sheet sheet-like material to which the information transmission means is adhered is provided in the single sheet material. The defect detection and removal method according to claim 1. The defect information input step includes a first defect information input step and a second defect information input step,
In the first defect information input step, the defect information of the wide band obtained by the defect detection device is input to the first information transmission means,
In the second defect information input step, the information of the first information transmission unit is read by a reading device of the reading step, and the obtained information is input to the second information transmission unit,
The sticking step includes a first sticking step of sticking the first information transmission means to the edge of the wide strip based on the information of the defect detection device, and the second information transfer means of the narrow strip shape. A second pasting step for pasting to the edge of the object,
In the second attaching step, the second information transmission means is attached to the edge of the narrow strip based on the information of the reading device in accordance with a predetermined cutting interval of the narrow strip.
After this, the narrow strip is cut into a predetermined length in a cutting step to form a sheet-like sheet,
A removing step of removing a defective portion in accordance with information of the second information transmission unit with respect to the single-sheet sheet-like material to which the second information transmission unit is stuck, The defect detection and removal method according to claim 1. The defect detection / removal method according to claim 1, wherein the information transmission means is a wireless tag (RFID). The defect detection and removal method according to claim 1, wherein the wide strip is a planographic printing plate material. After the wide strip continuously conveyed is made into a narrow strip with a predetermined width in the slitting step, the narrow strip is cut into a predetermined length in the cutting step to form a sheet-like sheet, In the leaf sheet-like material, in the production method of the single-wafer sheet-like material that prevents the mixing of the defective portion detected in the wide-band material,
A defect detection step having a defect detection device for detecting defects in the wide strip;
Defect information input step for inputting the defect information of the wide strip obtained in the defect detection step into an information transmission means;
A sticking step of sticking the information transmission means that has input the defect information;
And a removing step of removing a defective portion from the single sheet according to the information of the information transmission means stuck in the sticking step. In the attaching step, an information transmission means is attached to the edge of the narrow strip based on the information of the defect detection device in accordance with the predetermined cutting interval of the narrow strip.
After this, the narrow strip is cut into a predetermined length in a cutting step to form a sheet-like sheet,
The defective portion is removed in a removing step in accordance with information of the information transmission means for the single-sheet sheet-like material to which the information transmission means is adhered among the sheet-like materials. 6. A method for producing a sheet material according to item 6. The defect information input step includes a first defect information input step and a second defect information input step,
In the first defect information input step, the defect information of the wide band obtained by the defect detection device is input to the first information transmission means,
In the second defect information input step, the information of the first information transmission unit is read by a reading device of the reading step, and the obtained information is input to the second information transmission unit,
The sticking step includes a first sticking step of sticking the first information transmission means to the edge of the wide strip based on the information of the defect detection device, and the second information transfer means of the narrow strip shape. A second pasting step for pasting to the edge of the object,
In the second attaching step, the second information transmission means is attached to the edge of the narrow strip based on the information of the reading device in accordance with a predetermined cutting interval of the narrow strip.
After this, the narrow strip is cut into a predetermined length in a cutting step to form a sheet-like sheet,
A defect portion is removed in a removing step in accordance with information of the second information transmission means, with respect to the single-sheet sheet-like material to which the second information transmission means is adhered, among the sheet-like materials. A method for producing a sheet-like sheet according to claim 6. The method for producing a sheet-like sheet according to any one of claims 6 to 8, wherein the information transmission means is a wireless tag (RFID). The method for producing a sheet-like sheet according to any one of claims 6 to 9, wherein the wide strip is a lithographic printing plate material.

Images