WO2017065230A1 - シート処理装置、シート処理方法 - Google Patents
シート処理装置、シート処理方法 Download PDFInfo
- Publication number
- WO2017065230A1 WO2017065230A1 PCT/JP2016/080420 JP2016080420W WO2017065230A1 WO 2017065230 A1 WO2017065230 A1 WO 2017065230A1 JP 2016080420 W JP2016080420 W JP 2016080420W WO 2017065230 A1 WO2017065230 A1 WO 2017065230A1
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- WIPO (PCT)
- Prior art keywords
- sheet
- unit
- image
- processing apparatus
- image acquisition
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/58—Article switches or diverters
- B65H29/60—Article switches or diverters diverting the stream into alternative paths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/58—Article switches or diverters
- B65H29/62—Article switches or diverters diverting faulty articles from the main streams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
- B65H43/04—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, presence of faulty articles
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/026—Separating fibrous materials from waste
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
- D21B1/08—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags
- D21B1/10—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags by cutting actions
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
- D21G9/0018—Paper-making control systems controlling the stock preparation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/22—Feed or discharge means
- B02C18/2225—Feed means
- B02C18/2283—Feed means using rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/33—Modifying, selecting, changing orientation
- B65H2301/333—Inverting
- B65H2301/3331—Involving forward reverse transporting means
- B65H2301/33312—Involving forward reverse transporting means forward reverse rollers pairs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/512—Changing form of handled material
- B65H2301/5127—Changing form of handled material shredding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/60—Other elements in face contact with handled material
- B65H2404/63—Oscillating, pivoting around an axis parallel to face of material, e.g. diverting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/40—Movement
- B65H2513/42—Route, path
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/84—Quality; Condition, e.g. degree of wear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/39—Scanning
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Definitions
- the present invention relates to a sheet processing apparatus and a sheet processing method.
- a document processing apparatus including a scanner unit that reads image information of a paper sheet and a shredder unit that shreds the paper sheet is known (for example, see Patent Document 1).
- the present invention has been made to solve at least a part of the problems described above, and can be realized as the following forms or application examples.
- a sheet processing apparatus includes a supply unit that supplies a sheet, an image acquisition unit that acquires an image of a sheet supplied from the supply unit, and a sheet acquired by the image acquisition unit.
- a first determination unit that determines whether or not the sheet can be reused based on the image of the first sheet, and when the first determination unit determines that the first surface of the sheet is reusable, the first surface of the sheet And the second surface are reversed without being reversed, and when the first determination unit determines that the second surface of the sheet is reusable, the first surface and the second surface of the sheet are reversed.
- a reversing portion for discharging.
- the image of the sheet supplied from the supply unit is acquired by the image acquisition unit, and whether or not the sheet can be reused is determined based on the acquired image of the sheet.
- the opportunity to effectively use the sheet increases, and the consumption of the sheet can be suppressed.
- the sheet determined to be reusable is discharged with the reusable portion of the sheet being aligned by the reversing unit. As a result, the sheet can be reused immediately.
- the sheet processing apparatus includes a crushing unit that crushes the sheet, and the first determination unit determines that both the first surface and the second surface of the sheet are not reusable. When this is done, the sheet is crushed by the crushing section.
- the non-reusable sheet is crushed by the crushing unit, so that information leakage can be prevented.
- the sheet processing apparatus uses a defibrating unit that defibrates the coarsely crushed pieces crushed by the crushing unit, and a sheet using at least a part of the defibrated material. And a sheet forming part for forming the sheet.
- the roughly crushed sheet can be recycled and used as a new sheet.
- the first determination unit of the sheet processing apparatus determines whether the surface state of the sheet has an abnormality based on the image of the sheet acquired by the image acquisition unit.
- a second determination unit configured to crush the sheet by the crushing unit when the second determination unit determines that the surface state of the sheet is abnormal.
- the sheet processing apparatus includes an erasing unit that is disposed between the supply unit and the image acquisition unit along the sheet conveyance direction and erases an image recorded on the sheet. It is characterized by having.
- the sheet image can be reused by deleting the image, the sheet consumption can be further suppressed.
- a sheet is supplied, an image of the supplied sheet is acquired, and whether or not the sheet can be reused is determined based on the acquired sheet image.
- the first surface and the second surface of the sheet are discharged without being reversed, and when the second surface of the sheet is determined to be reusable.
- the first surface and the second surface of the sheet are reversed and discharged.
- an image of the supplied sheet is acquired, and whether or not the sheet can be reused is determined based on the acquired image of the sheet.
- opportunities for effective use of sheets increase, and the consumption of sheets can be suppressed.
- the sheets determined to be reusable are discharged with the reusable surfaces of the sheets being aligned by reversal. As a result, the sheet can be reused immediately.
- FIG. 1 is a schematic diagram illustrating a configuration of a sheet processing apparatus according to a first embodiment.
- FIG. 3 is a control block diagram illustrating a control configuration of the sheet processing apparatus according to the first embodiment.
- 6 is a flowchart illustrating a sheet processing method according to the first embodiment.
- Explanatory drawing which shows the example of a display of the touchscreen concerning 1st Embodiment.
- Explanatory drawing which shows the example of a display of the touchscreen concerning 1st Embodiment.
- FIG. 3 is a schematic diagram illustrating an operation of the sheet processing apparatus according to the first embodiment.
- FIG. 3 is a schematic diagram illustrating an operation of the sheet processing apparatus according to the first embodiment.
- FIG. 3 is a schematic diagram illustrating an operation of the sheet processing apparatus according to the first embodiment.
- FIG. 3 is a schematic diagram illustrating an operation of the sheet processing apparatus according to the first embodiment.
- FIG. 3 is a schematic diagram illustrating an operation of the sheet processing apparatus according to the first embodiment.
- 9 is a flowchart showing another sheet processing method according to the first embodiment. Schematic which shows the structure of the sheet processing apparatus concerning 2nd Embodiment.
- FIG. 9 is a control block diagram illustrating a configuration of a sheet processing apparatus according to a second embodiment. 9 is a flowchart illustrating a sheet processing method according to the second embodiment. 12 is a flowchart showing another sheet processing method according to the second embodiment. Schematic which shows the structure of the sheet processing apparatus concerning 3rd Embodiment.
- FIG. 9 is a schematic diagram illustrating a configuration of a sheet processing apparatus according to a first modification. Schematic which shows the structure of the sheet processing apparatus concerning the modification 2.
- FIG. 9 is a schematic diagram illustrating a configuration of a sheet processing apparatus according to a first modification. Schematic which shows the structure of the sheet
- the sheet processing apparatus includes a supply unit that supplies a sheet, an image acquisition unit that acquires an image of the sheet supplied from the supply unit, and the sheet image acquired by the image acquisition unit.
- a first determination unit that determines whether or not the sheet can be reused, and when the first determination unit determines that the first surface of the sheet is reusable, the first surface and the second surface of the sheet are reversed.
- a reversing unit that reverses and discharges the first surface and the second surface of the sheet when the first determination unit determines that the second surface of the sheet is reusable. is there. This will be specifically described below.
- FIG. 1 is a schematic diagram illustrating a configuration of a sheet processing apparatus.
- the sheet processing apparatus 10 includes a supply unit 200, an image acquisition unit 300, and a reversing unit 400. Furthermore, in this embodiment, the crushing part 12 and the sheet
- the sheet processing apparatus 10 of the present embodiment includes a housing 190, and the supply unit 200, the image acquisition unit 300, the reversing unit 400, the crushing unit 12, the sheet storage unit 600, and the like are arranged in the housing 190. Yes. With such a configuration, the sheet processing apparatus 10 can be easily handled and can be easily installed in an office or the like.
- the sensor of the image acquisition unit may be a CCD area sensor, a CMOS area sensor, or a photodiode sensor.
- the sheet processing apparatus 10 discharges the sheet Pu to the sheet storage unit 600 without inverting the first surface and the second surface of the sheet Pu.
- the first surface and the second surface of the sheet Pu are reversed and discharged to the sheet storage unit 600.
- a conveyance path 502 and a third conveyance path 503 for discharging the sheet Pu supplied from the supply unit 200 to the crushing unit 12 after passing through the image acquisition unit 300 are provided.
- a plurality of conveyance roller pairs 510 are arranged along the conveyance paths of the first to third conveyance paths 501, 502, and 503. Note that one of the pair of transport rollers 510 is a driving roller and the other is a driven roller.
- the supply unit 200 supplies the sheet Pu toward the image acquisition unit 300 side.
- the sheet Pu in the present embodiment is, for example, waste paper, and is A4 size paper that is currently mainstream in offices and the like.
- the supply unit 200 includes a tray 201 on which a plurality of sheets Pu can be stacked and a moving mechanism that moves the tray 201 up and down in the vertical direction.
- the moving mechanism includes, for example, a ball screw shaft, a ball nut to which the tray 201 is connected, and a motor connected to the ball screw shaft, and the tray 201 can be moved up and down by driving the motor. .
- a pickup roller 202 is disposed at a position corresponding to the sheet Pu placed on the upper end among the plurality of sheets Pu placed on the tray 201. Then, by driving the pickup roller 202, the sheet Pu can be conveyed to the image acquisition unit 300 side.
- the image acquisition unit 300 acquires an image of the sheet Pu supplied from the supply unit 200.
- the image acquisition unit 300 is, for example, a scanner, and a data signal acquired by scanning the sheet Pu is transmitted to the control unit 180 serving as a first determination unit.
- the image acquisition unit 300 of the present embodiment includes a first image acquisition unit 300a that acquires an image of the first surface of the supplied sheet Pu, and an image of a second surface that is the surface opposite to the first surface of the sheet Pu. And a second image acquisition unit 300b for acquiring.
- the first image acquisition unit 300a and the second image acquisition unit 300b are arranged to face each other with the sheet Pu interposed therebetween.
- the scanning is performed while moving the sheet Pu with respect to the first and second image acquisition units 300a and 300b.
- the first and second image acquisition units 300a and 300b with respect to the sheet Pu are used. May be configured to move (scan).
- the reversing unit 400 When the control unit 180 determines that the first surface of the sheet Pu is reusable, the reversing unit 400 discharges the sheet Pu to the sheet storage unit 600 side without reversing the first surface and the second surface of the sheet Pu. When the control unit 180 determines that the second surface of the sheet Pu is reusable, the first surface and the second surface of the sheet Pu are reversed and discharged to the sheet storage unit 600 side.
- the reversing unit 400 of this embodiment includes a first branching unit 410, a second branching unit 411, and reversing unit roller pairs 421 and 422.
- the first branching unit 410 forms part of the first transport path 501, the second transport path 502, and the third transport path 503, and the first transport path 501 (third transport path 503), the second transport path 502, and the like. Branching off. Specifically, the first branch portion 410 forms a claw-like body.
- the first branch portion 410 is configured to be movable by the power of a motor or the like with the end of the first branch portion 410 on the upstream side in the conveyance direction of the sheet Pu as a fulcrum.
- the 1st branch part 410 is comprised so that a movement to the 1st position P1 and the 2nd position P2 is possible.
- the 1st branch part 410 when selecting the 1st conveyance path 501 or the 3rd conveyance path 503, the 1st branch part 410 is located in the 1st position P1, and when selecting the 2nd conveyance path 502, it is the 1st branch.
- the part 410 is controlled to be located at the second position P2.
- the reversing unit roller pairs 421 and 422 are arranged in the second transport path 502.
- the reverse part roller pairs 421 and 422 are rollers that can rotate in both forward and reverse directions.
- one is a driving roller and the other is a driven roller.
- the second branching unit 411 is disposed between the first branching unit 410 and the reversing unit roller pair 421 and introduces the sheet Pu conveyed from the first branching unit 410 side to the reversing unit roller pair 421 and 422 side.
- the sheet Pu conveyed in the reverse direction by the reverse rotation of the reversing unit roller pairs 421 and 422 is discharged to the reverse sheet conveyance path 502a side where the second conveyance path 502 and the first conveyance path 501 are connected. is there.
- the 2nd branch part 411 has comprised the nail
- the second branch portion 411 is configured to be movable by the power of a motor or the like with the end portion of the second branch portion 411 on the downstream side in the conveyance direction of the sheet Pu as a fulcrum. Specifically, the second branch portion 411 is configured to be movable between the third position P3 and the fourth position P4. In the present embodiment, when the sheet Pu is introduced to the reversing unit roller pair 421 and 422, the second branching unit 411 is set to the third position P3, and the reversed sheet Pu is discharged to the reversing sheet conveyance path 502a. In this case, the second branch 411 is controlled to be set at the fourth position P4.
- the third branch portion 550 is disposed on the downstream side in the transport direction of the sheet Pu of the first branch portion 410 in the first transport path 501.
- the third branching unit 550 forms part of the first and third transport paths 501 and 503 and branches into the first transport path 501 and the third transport path 503.
- the third branch portion 550 forms a claw-like body.
- the third branch portion 550 is configured to be movable by the power of a motor or the like with the end portion of the third branch portion 550 on the upstream side in the conveyance direction of the sheet Pu as a fulcrum.
- the third branch portion 550 is configured to be movable between a fifth position P5 and a sixth position P6.
- the 3rd branch part 550 when selecting the 1st conveyance path 501, the 3rd branch part 550 is located in the 5th position P5, and when selecting the 3rd conveyance path 503, the 3rd branch part 550 is the 6th position. It is controlled to be located at P6.
- the sheet storage unit 600 stores the sheet Pu discharged from the first transport path 501 or the second transport path 502.
- the sheet storage unit 600 includes a tray 601 on which a plurality of discharged sheets Pu can be stacked.
- the crushing unit 12 crushes the sheet Pu when the control unit 180 determines that both the first surface and the second surface of the sheet Pu are not reusable.
- the sheet Pu conveyed through the third conveyance path 503 is roughly crushed.
- the crushing unit 12 for example, the sheet Pu is cut into several cm square pieces. Thereby, information leakage described in the sheet Pu can be prevented.
- the crushing unit 12 has a crushing blade 14, and the supplied sheet Pu can be crushed (cut) with the crushing blade 14. For example, a shredder can be applied to the crushing unit 12. Further, the strip container 15 is disposed, and the strips crushed by the crushing unit 12 are accommodated in the strip container 15.
- FIG. 2 is a control block diagram illustrating a control configuration of the sheet processing apparatus.
- the control unit 180 includes a command unit 181 and a drive unit 186.
- the command unit 181 includes a CPU (Central Processing Unit) 182 for executing various programs, a RAM (Random Access Memory) 183 for temporarily storing various data and programs, and various data and various programs in advance.
- a ROM (Read Only Memory) 184 and an interface 185 are provided.
- the CPU 182 processes various signals input via the interface 185 based on the data stored in the RAM 183 and the ROM 184, and outputs a control signal to the drive unit 186 via the interface 185.
- the drive unit 186 includes various drivers, and includes a touch panel 187, a network communication unit 188, a first image acquisition unit 300a, a second image acquisition unit 300b, a first branch unit 410, a second branch unit 411, a third branch unit 550, It is connected to the conveyance roller pair 510, the reversing part roller pair 421,422, the supply part 200, the crushing part 12, and the like. And it is comprised so that each part, an apparatus, etc. may be controlled based on the control signal of the instruction
- the control unit 180 determines whether or not the sheet Pu can be reused based on the image of the sheet Pu acquired by the image acquisition unit 300. Specifically, the control unit 180 determines whether or not the sheet Pu can be reused based on the recording state of the sheet Pu.
- the recording state of the sheet Pu refers to, for example, a state in which the sheet Pu is recorded by handwriting or the like using various writing tools in addition to a printing state printed by an ink jet printer or a laser printer.
- whether or not the sheet Pu can be reused is determined based on the density data of the image of the sheet Pu.
- the first image acquisition unit 300a is driven to scan the first surface of the sheet Pu.
- the analog output signal of the surface image of the sheet Pu read by the first image acquisition unit 300a is converted into 8-bit pixel data by A / D conversion (not shown) of the digital conversion means, and the first surface of the sheet Pu
- the image data Pu ′ corresponding to the image is generated.
- the generated image data Pu ′ is stored in the RAM 183.
- the image data Pu ′ includes density data in units of pixels.
- the density data is, for example, a data value that can be expressed in 256 gradations.
- the predetermined density data stored in advance is compared with the density data of the generated image data Pu ′.
- the specified density data is, for example, density data acquired from the surface of the sheet Pu that is not recorded.
- the density data of the image data Pu ′ is higher than the specified density data, it is determined that there is a record on the surface of the sheet Pu, and it is determined that the sheet Pu cannot be reused.
- the density data of the image data Pu ′ is lower than the specified density data, it is determined that there is no recording on the surface of the sheet Pu, and it is determined that the sheet Pu can be reused.
- the second surface of the sheet Pu is also determined in the same manner as described above.
- the control unit 180 includes a second determination unit that determines whether the surface state of the sheet Pu is abnormal based on the image of the sheet Pu acquired by the image acquisition unit 300.
- the abnormal state of the surface state of the sheet Pu refers to a state in which the sheet Pu has wrinkles, breaks, tears, dirt, and the like.
- it does not matter whether the surface state abnormality of the sheet Pu is the first surface or the second surface of the sheet Pu. Note that the method for determining whether or not the surface state of the sheet Pu is abnormal can be determined based on the density data of the image of the sheet Pu as described above.
- the method of comparing the predetermined density data stored in advance with the density data of the generated image data Pu ′ in the control unit 180 is not limited to the above method, and for example, the generated image data Pu
- the average value of 'density data of' may be calculated, and the calculated average value may be set as a comparison target, or the binarized data based on a predetermined threshold in the density data of the generated image data Pu ' It is good.
- various spatial filter processes in order to highlight the difference in the characteristics between the density data of a specific pixel and its surrounding pixels and the density data of pixels in other regions
- a Prewitt filter or a Sobel filter may be performed.
- the sheet processing method supplies a sheet, acquires an image of the supplied sheet, determines whether or not the sheet can be reused based on the acquired sheet image, and can reuse the first surface of the sheet.
- the first side and the second side of the sheet are discharged without being reversed, and when it is determined that the second side of the sheet is reusable, the first side and the second side of the sheet Are reversed and discharged. This will be specifically described below.
- the sheet processing method of the present embodiment will be described with reference to the sheet processing method in the sheet processing apparatus 10.
- FIG. 3 is a flowchart showing the sheet processing method.
- 4 and 5 are explanatory diagrams showing examples of display on the touch panel, and
- FIG. 6 is an explanatory diagram showing conditions of the image determination area.
- 7 to 10 are schematic views showing the operation of the sheet processing apparatus.
- the sheet processing apparatus 10 determines only the recording state of the sheet Pu and processes the sheet Pu, for example, there is an unused surface on the first surface or the second surface of the sheet Pu.
- the surface state of the sheet Pu is determined to determine the sheet Pu.
- Two sheet processing methods namely, a processing method (sheet surface state determination mode) will be described.
- step S10 conditions are set. Specifically, the selection of the sheet processing method and the condition for determining whether or not the sheet Pu can be reused are set. First, as shown in FIG. 4, among the “unused surface reuse mode” and the “sheet surface state determination mode” on the sheet processing mode selection screen displayed on the touch panel 187, fingers or dedicated Select “unused surface reuse mode” using a pen or the like.
- Whether or not the sheet can be reused may be determined based on the presence or absence of recording (printing) on the entire first surface or second surface of the sheet Pu. For example, the sheet Pu is printed in a relatively small area at the end of the sheet Pu. Things may want to be reused. For this reason, the conditions of the image determination area for determining whether or not the sheet Pu can be reused can be selected in accordance with the reuse situation of the user.
- an image determination area Dc for determining the image recording state on the sheet Pu is selected.
- a condition (dimension) to be excluded from the determination of the presence / absence of a recording state in the sheet Pu is displayed.
- the dimension Us from one short side to the other short side in the sheet Pu the dimension Bs from the other short side to the one short side in the sheet Pu, and the one long side to the other long side in the sheet Pu.
- a dimension Rs from the other long side to the one long side of the sheet Pu is described.
- the dimension Us is 0 mm
- the dimension Bs is 0 mm
- the dimension Ls is 0 mm
- the dimension Rs is 0 mm. That is, the image determination area Dc in the condition 1 is the entire surface of the sheet Pu. Therefore, by selecting the condition 1, it is determined whether or not there is a recording state on the entire first surface and the second surface of the sheet Pu.
- condition 2 of the image determination area Dc the dimension Us is 35 mm, the dimension Bs is 30 mm, the dimension Ls is 30 mm, and the dimension Rs is 30 mm. That is, the image determination area Dc in Condition 2 is an area obtained by removing the area indicated by the above dimensions from the entire surface of the sheet Pu. Therefore, by selecting the condition 2, it is determined whether or not there is a recording state in the area excluding the area even if the recording is performed in the dimension area.
- Conditions 3 to 5 are also determined in the same manner as described above. Note that the conditions of the image determination area Dc are not particularly limited, and can be appropriately set or changed according to the paper size of the sheet Pu, the reuse status, or the like.
- step S11 the sheet Pu is supplied. Specifically, the pickup roller 202 of the supply unit 200 is driven, and the sheet Pu placed on the tray 201 is supplied to the first image acquisition unit 300a and the second image acquisition unit 300b side.
- step S13 an image of the supplied sheet Pu is acquired.
- the first image acquisition unit 300a and the second image acquisition unit 300b are driven, and the first image acquisition unit 300a acquires the image of the first surface of the sheet Pu, and the second The image acquisition unit 300b acquires an image of the second surface of the sheet Pu.
- an analog output signal of the surface image of the sheet Pu read by the first image acquisition unit 300a and the second image acquisition unit 300b is converted into an 8-bit signal by A / D conversion (not shown) of digital conversion means. Converted into pixel data, image data Pu ′ corresponding to each image on the first surface and the second surface of the sheet Pu is acquired.
- the image data Pu ′ acquired by the first image acquisition unit 300a and the second image acquisition unit 300b accesses a predetermined server via the network communication unit 188 and is stored in a storage device provided on the server.
- the image data Pu ′ is recorded on the server, so the predetermined image data Pu ′ is read again from the server, The recorded information can be restored.
- step S21 according to the condition setting in step S10, the recorded image is recorded in the image data Pu ′ corresponding to the first surface of the acquired sheet Pu and the image data Pu ′ corresponding to the second surface of the acquired sheet Pu. It is determined whether or not there is. If there is a recorded image in the image data Pu ′ on the first surface or the second surface (NO), the process proceeds to step S22.
- the process proceeds to step S26, and the accommodation process of the sheet Pu is performed in step S26.
- the first branch portion 410 is set to the first position P1
- the third branch portion 550 is set to the fifth position P5.
- the sheet Pu that has passed through the first image acquisition unit 300a and the second image acquisition unit 300b passes through the first conveyance path 501 by the conveyance roller pair 510 and is accommodated in the sheet accommodation unit 600. That is, when the control unit 180 determines that both surfaces of the sheet Pu are reusable, the sheet Pu is discharged without being inverted.
- the sheet Pu is stored in the sheet storage unit 600 so that the first surface of the sheet Pu faces upward.
- step S22 according to the condition setting in step S10, it is determined whether or not there is a recorded image in the image data Pu ′ corresponding to the acquired first surface of the sheet Pu. If there is a recorded image (NO), the process proceeds to step S23.
- step S26 when there is no recorded image in the image data Pu ′ corresponding to the first surface of the sheet Pu (YES), the process proceeds to step S26, and the accommodation process of the sheet Pu is performed in step S26.
- the first branch portion 410 is set to the first position P1
- the third branch portion 550 is set to the fifth position P5.
- the sheet Pu that has passed through the first image acquisition unit 300a and the second image acquisition unit 300b passes through the first conveyance path 501 by the conveyance roller pair 510 and is accommodated in the sheet accommodation unit 600. That is, when the control unit 180 determines that the first surface of the sheet Pu is reusable, the sheet Pu is discharged without being inverted.
- the sheet Pu is stored in the sheet storage unit 600 such that the first surface of the sheet Pu faces upward. Therefore, if there is no recorded image in the image data Pu ′ corresponding to the first surface and the second surface of the sheet Pu, the surfaces without the recorded image (first surface) are accommodated so that they face upward.
- step S23 according to the condition setting in step S10, it is determined whether or not there is a recorded image in the image data Pu ′ corresponding to the acquired second surface of the sheet Pu. If there is a recorded image (NO), the process proceeds to step S24.
- step S25 if there is no recorded image in the image data Pu ′ corresponding to the second surface of the sheet Pu (YES), the process proceeds to step S25, and inversion processing of the sheet Pu is performed in step S25.
- the first branch portion 410 is set at the second position P2, and the second branch portion 411 is set at the third position P3. . Accordingly, the sheet Pu that has passed through the first image acquisition unit 300a and the second image acquisition unit 300b is branched from the first conveyance path 501 by the conveyance roller pair 510 and conveyed to the second conveyance path 502.
- the sheet Pu is conveyed by rotating the reversing unit roller pairs 421 and 422 in the forward direction. At this time, the sheet Pu is transported until the end on the downstream side in the transport direction of the sheet Pu passes through the second branch portion 411.
- the second branch 411 is moved from the third position P3 to the fourth position P4.
- reversing part roller pair 421,422 is rotated to a reverse direction. As a result, the sheet Pu is turned upside down, is transported through the reverse sheet transport path 502a via the second branch portion 411, and joins the first transport path 501.
- step S26 where the sheet Pu is accommodated in step S26.
- the third branch portion 550 is set to the fifth position P5. Accordingly, the sheet Pu is stored in the sheet storage unit 600 via the third branching unit 550 by the conveying roller pair 510. That is, when the control unit 180 determines that the second surface of the sheet Pu is reusable, the first surface and the second surface of the sheet Pu are reversed and discharged. Then, the sheet Pu is accommodated so that the surface without the recorded image (second surface) faces upward.
- step S24 the sheet Pu is crushed. That is, when it is determined by the control unit 180 that both the first surface and the second surface of the sheet Pu are not reusable, the sheet Pu is crushed by the crushing unit 12.
- the 3rd branch part 550 is set to the 6th position P6.
- the sheet Pu that has passed through the first image acquisition unit 300a and the second image acquisition unit 300b is branched from the first conveyance path 501 by the conveyance roller pair 510 and conveyed to the third conveyance path 503. Then, the sheet Pu is conveyed to the crushing unit 12, and the sheet Pu is crushed (cut) by the crushing blade 14 of the crushing unit 12. Thereby, it is possible to prevent information leakage related to the content recorded on the non-reusable sheet Pu.
- FIG. 11 is a flowchart showing another sheet processing method.
- steps S10 conditions are set. Specifically, as shown in FIG. 4, a finger is selected from “unused surface reuse mode” and “sheet surface state determination mode” on the sheet processing mode selection screen displayed on the touch panel 187. Then, the “sheet surface state determination mode” is selected using a dedicated pen or the like. Since the other condition setting methods in step S10 are the same as described above, the description thereof is omitted.
- step S11 the process proceeds to step S11, and then the process proceeds to step S13.
- step S11 and step S13 are the same as described above, and thus description thereof is omitted. Thereafter, the process proceeds from step S13 to step S20.
- step S20 based on the image data Pu 'corresponding to the acquired sheet Pu, it is determined whether or not the surface state of the sheet Pu is abnormal. If the surface condition is abnormal (YES), the process proceeds to step S24. That is, when the control unit 180 determines that the surface state of the sheet Pu is abnormal, the sheet Pu is crushed by the crushing unit 12. At this time, as shown in FIG. 10, while setting the 1st branch part 410 to the 1st position P1, the 3rd branch part 550 is set to the 6th position P6. Thus, the sheet Pu that has passed through the first image acquisition unit 300a and the second image acquisition unit 300b is branched from the first conveyance path 501 by the conveyance roller pair 510 and conveyed to the third conveyance path 503. Then, the sheet Pu is conveyed to the crushing unit 12, and the sheet Pu is crushed (cut) by the crushing blade 14 of the crushing unit 12. Thereby, it is possible to prevent information leakage related to the content recorded on the non-reusable sheet Pu.
- step S21 if there is no abnormality in the surface state in step S20 (NO), the process proceeds to step S21.
- the processing method after step S21 is the same as the above-mentioned processing method, description is abbreviate
- the images of the sheet Pu (image data Pu ′) supplied from the supply unit 200 by the first and second image acquisition units 300a and 300b are acquired, and based on the acquired image of the sheet Pu (image data Pu ′), Whether or not the sheet Pu can be reused is determined. As a result, opportunities for effective use of sheets increase, and the consumption of sheets can be suppressed. Further, the reversing unit 400 discharges the sheets Pu with the reusable surfaces aligned. For example, since the reusable surface of the sheet Pu is aligned so as to face upward and is accommodated in the sheet accommodating portion 600, it can be reused immediately. Further, whether or not the sheet Pu can be reused is determined based on whether or not the surface state of the sheet Pu is abnormal. For this reason, the sheet Pu unsuitable for reuse can be reliably selected.
- the sheet processing apparatus includes a supply unit that supplies a sheet, an image acquisition unit that acquires an image of the sheet supplied from the supply unit, and the sheet image acquired by the image acquisition unit.
- a first determination unit that determines whether or not the sheet can be reused, and when the first determination unit determines that the first surface of the sheet is reusable, the first surface and the second surface of the sheet are reversed.
- a reversing unit that reverses and discharges the first surface and the second surface of the sheet when the first determination unit determines that the second surface of the sheet is reusable.
- the sheet processing apparatus includes an erasing unit that is disposed between the supply unit and the image acquisition unit along the sheet conveyance direction, and erases an image recorded on the sheet.
- FIG. 12 is a schematic diagram showing the configuration of the sheet processing apparatus.
- the sheet processing apparatus 10a includes a supply unit 200, an image acquisition unit 300, a reversing unit 400, a crushing unit 12, a sheet storage unit 600, and an erasing unit 700. Yes. And the control part 180 which controls these each part etc. is provided. Since the configuration other than the erasing unit 700 is the same as the configuration according to the first embodiment, the description thereof is omitted.
- the erasing unit 700 is for erasing the image recorded on the sheet Pu.
- erasing will be described.
- a decoloring ink that can be used in inkjet an ink that is decolored by a predetermined action is used.
- an ink that can be erased by applying light energy, heat energy, or the like can be used.
- an ink containing a photochromic compound can be used.
- an ink containing a leuco dye and a developer can be used.
- the decolorable ink that can be used in electrophotography As the decolorable ink that can be used in electrophotography, as the decolorable toner, a toner that is decolored by a predetermined action is used. For example, a toner that can be erased by applying light energy, heat energy, or the like can be used. As the toner to be decolored by application of light energy, a toner containing a near-infrared photosensitive dye and a decoloring agent can be used. As the toner to be decolored by application of heat energy, a toner containing a leuco dye, a developer, and a binder resin can be used.
- This heat-sensitive decoloring toner is composed of a microcapsule that combines a leuco dye, a developer, and a temperature control agent, and a thermoplastic resin and wax. The bond with the developer is cut. Then, by combining the erasing agent and the dye, the dye is colorless and the color can be erased.
- a configuration for erasing an image recorded with decoloring toner or decoloring ink having decoloring characteristics by heating will be described.
- the erasing unit 700 of the present embodiment is a heating roller pair (heater roller pair), and is disposed between the supply unit 200 and the image acquisition unit 300.
- a heating member such as a heater is provided at the center of the rotating shaft of each heating roller, and the entire heating roller is heated by driving the heater.
- the heating temperature is, for example, about 30 to 70 degrees.
- FIG. 13 is a control block diagram illustrating a control configuration of the sheet processing apparatus.
- the control unit 180 includes a command unit 181 and a drive unit 186.
- the erasing unit 700 is connected to the driving unit 186 and is configured to be controllable based on a control signal from the command unit 181. Since other configurations are the same as those of the first embodiment, the description thereof is omitted.
- the sheet processing method of the present embodiment supplies a sheet, erases an image recorded on the supplied sheet, then acquires an image of the supplied sheet, and based on the acquired sheet image, When it is determined whether or not the sheet can be reused and it is determined that the first surface of the sheet is reusable, the first surface and the second surface of the sheet are discharged without being reversed, and the second surface of the sheet is When it is determined that the sheet can be reused, the first side and the second side of the sheet are reversed and discharged. This will be specifically described below.
- the sheet processing method of the present embodiment will be described with respect to the sheet processing method in the sheet processing apparatus 10a.
- FIG. 14 is a flowchart showing the sheet processing method.
- step S10 conditions are set. Specifically, a finger, a dedicated pen, or the like is used among the “unused surface reuse mode” and the “sheet surface state determination mode” on the sheet processing mode selection screen displayed on the touch panel 187. To select “unused surface reuse mode” (see FIG. 4).
- step S11 the sheet Pu is supplied. Note that the detailed contents are the same as the contents of the first embodiment, and the description thereof will be omitted.
- step S12 the image recorded on the supplied sheet Pu is erased.
- the sheet Pu is passed through a heated erasing unit 700 (a pair of heating rollers).
- the sheet Pu decoloring ink
- the image recorded with the decoloring ink is erased.
- step S13 an image of the supplied sheet Pu is acquired.
- the first image acquisition unit 300a and the second image acquisition unit 300b are driven, and the first image acquisition unit 300a stores the image data Pu ′ corresponding to the first surface of the sheet Pu.
- the second image acquisition unit 300b acquires image data Pu ′ corresponding to the second surface of the sheet Pu.
- step S21 according to the condition setting in step S10, the recorded image is recorded in the image data Pu ′ corresponding to the first surface of the acquired sheet Pu and the image data Pu ′ corresponding to the second surface of the acquired sheet Pu. It is determined whether or not there is. If there is a recorded image in the image data Pu ′ corresponding to the first surface or the second surface (NO), the process proceeds to step S22. On the other hand, when there is no recorded image in the image data Pu ′ corresponding to the first surface and the second surface of the sheet Pu (YES), the process proceeds to step S26, and the accommodation process of the sheet Pu is performed in step S26.
- the sheet Pu recorded with the decoloring ink that is decolored by heating is erased (decolored) by the erasing unit 700, it is determined that there is no recorded image.
- the sheet Pu recorded with the decoloring ink that is erased by heating and the sheet Pu recorded with an ink other than the decoloring ink that is erased by heating are supplied together from the supply unit 200.
- the reusable sheet Pu can be reliably selected.
- step S21 the steps after step S21 are the same as the contents of the first embodiment, and a description thereof will be omitted.
- FIG. 15 is a flowchart showing another sheet processing method.
- step S10 conditions are set. Specifically, a finger, a dedicated pen, or the like is used among the “unused surface reuse mode” and the “sheet surface state determination mode” on the sheet processing mode selection screen displayed on the touch panel 187. The “sheet surface state determination mode” is selected (see FIG. 4).
- step S11 the sheet Pu is supplied. Note that the detailed contents are the same as the contents of the first embodiment, and the description thereof will be omitted.
- step S12 the image recorded on the supplied sheet Pu is erased.
- the sheet Pu is passed through a heated erasing unit 700 (a pair of heating rollers).
- the sheet Pu decoloring ink
- the image recorded with the decoloring ink is erased.
- step S13 an image of the supplied sheet Pu is acquired.
- the first image acquisition unit 300a and the second image acquisition unit 300b are driven, and the first image acquisition unit 300a stores the image data Pu ′ corresponding to the first surface of the sheet Pu.
- the second image acquisition unit 300b acquires image data Pu ′ corresponding to the second surface of the sheet Pu.
- step S20 based on the image of the image data Pu ′ corresponding to the acquired sheet Pu, it is determined whether or not the surface state of the sheet Pu is abnormal. If the surface condition is abnormal (YES), the process proceeds to step S24. That is, when the control unit 180 determines that the surface state of the sheet Pu is abnormal, the sheet Pu is crushed by the crushing unit 12. On the other hand, when there is no abnormality in the surface state in step S20 (NO), the process proceeds to step S21.
- the sheet Pu recorded with the decoloring ink that is decolored by heating is erased (erased) by the erasing unit 700, but cannot be reused if the surface state of the sheet Pu is abnormal. For this reason, the corresponding sheet Pu is crushed by the crushing unit 12. Therefore, even for the sheet Pu from which the image can be erased, the reusable sheet Pu and the non-reusable sheet Pu can be reliably selected according to the surface state of the sheet Pu.
- step S20 the steps after step S20 are the same as the contents of the first embodiment, and the description thereof will be omitted.
- the image recorded with leuco dye ink or the like on the sheet Pu is erased (erased) by the erasing unit 700. For this reason, since the opportunity to reuse the sheet Pu increases, the consumption of the sheet Pu can be further suppressed.
- the sheet processing apparatus includes a supply unit that supplies a sheet, an image acquisition unit that acquires an image of the sheet supplied from the supply unit, and the sheet image acquired by the image acquisition unit.
- a first determination unit that determines whether or not the sheet can be reused, and when the first determination unit determines that the first surface of the sheet is reusable, the first surface and the second surface of the sheet are reversed.
- the reversing unit reverses the first surface and the second surface of the sheet and discharges the sheet.
- Device Hereinafter, a specific configuration will be described.
- FIG. 16 is a schematic diagram showing the configuration of the sheet processing apparatus of the present embodiment.
- the sheet processing apparatus 10b includes a supply unit 200, an image acquisition unit 300, a reversing unit 400, a crushing unit 12, a defibrating unit 20, a sheet forming unit 80, and the like. Yes.
- the control part 180 (a 1st determination part is included) which controls these each part etc. is provided.
- the structure of the supply part 200, the image acquisition part 300, the inversion part 400, and the crushing part 12 is the same as the structure of 1st Embodiment, description is abbreviate
- the defibrating unit 20 defibrates the raw material cut by the crushing unit 12 and conveyed through the hopper 1 and the pipe 2.
- “defibration” means unraveling a raw material (a material to be defibrated) formed by binding a plurality of fibers into individual fibers.
- the defibrating unit 20 also has a function of separating substances such as resin particles, ink, toner, and a bleeding inhibitor adhering to the raw material from the fibers.
- the “defibrated material” includes resin particles (resins that bind multiple fibers together), ink, toner, etc. In some cases, additives such as colorants, anti-bleeding materials, and paper strength enhancing agents are included.
- the shape of the defibrated material that has been unraveled is a string shape or a ribbon shape.
- the unraveled defibrated material may exist in an unentangled state (independent state) with other undisentangled fibers, or entangled with other undisentangled defibrated material to form a lump. It may exist in a state (a state forming a so-called “dama”).
- the defibrating unit 20 performs defibration in a dry manner in the atmosphere (in the air). Specifically, an impeller mill is used as the defibrating unit 20.
- the defibrating unit 20 has a function of generating an air flow that sucks the raw material and discharges the defibrated material. As a result, the defibrating unit 20 can suck the raw material together with the airflow from the introduction port 22 with the airflow generated by itself, defibrate, and transport the defibrated material to the discharge port 24.
- the defibrated material that has passed through the defibrating unit 20 is transferred to the sorting unit 40 via the tube 3.
- the airflow for conveying a defibrated material from the defibrating unit 20 to the sorting unit 40 may use an airflow generated by the defibrating unit 20, or an airflow generation device such as a blower is provided, May be used.
- the sorting unit 40 introduces the defibrated material defibrated by the defibrating unit 20 from the inlet 42 and sorts the defibrated material according to the length of the fiber.
- the selection unit 40 for example, a sieve is used.
- the sorting unit 40 has a net (filter, screen), fibers or particles smaller than the mesh size of the mesh (things that pass through the mesh, the first selection product), fibers larger than the mesh size of the mesh, Undefibrated pieces and lumps (those that do not pass through the net, second sort) can be separated.
- the first selection is transferred to the mixing unit 50 via the pipe 7.
- the second selected item is returned to the defibrating unit 20 from the discharge port 44 through the pipe 8.
- the sorting unit 40 is a cylindrical sieve that is rotationally driven by a motor.
- a net of the sorting unit 40 for example, a metal net, an expanded metal obtained by extending a cut metal plate, or a punching metal in which a hole is formed in the metal plate by a press machine or the like is used.
- the first web forming unit 45 conveys the first sorted product that has passed through the sorting unit 40 to the mixing unit 50.
- the first web forming unit 45 includes a mesh belt 46, a stretching roller 47, and a suction unit (suction mechanism) 48.
- the suction unit 48 can suck the first sorted material dispersed in the air through the opening (opening of the mesh) of the sorting unit 40 onto the mesh belt 46.
- the first selection is deposited on the moving mesh belt 46 to form the web V.
- the basic configurations of the mesh belt 46, the stretching roller 47, and the suction unit 48 are the same as the mesh belt 72, the stretching roller 74, and the suction mechanism 76 of the second web forming unit 70 described later.
- the web V is formed in a soft and swelled state containing a lot of air by passing through the sorting unit 40 and the first web forming unit 45.
- the web V deposited on the mesh belt 46 is put into the tube 7 and conveyed to the mixing unit 50.
- the rotating body 49 can cut the web V before the web V is conveyed to the mixing unit 50.
- the rotator 49 has a base 49a and a protrusion 49b protruding from the base 49a.
- the protrusion 49b has, for example, a plate shape.
- four protrusions 49b are provided, and four protrusions 49b are provided at equal intervals.
- the base 49a rotates in the direction R
- the protrusion 49b can rotate around the base 49a.
- the rotating body 49 is provided in the vicinity of the first web forming portion 45.
- the rotating body 49 is provided in the vicinity of the stretching roller 47a located on the downstream side in the path of the web V (next to the stretching roller 47a).
- the rotating body 49 is provided at a position where the protrusion 49b can come into contact with the web V and not in contact with the mesh belt 46 on which the web V is deposited. Thereby, it is possible to suppress the mesh belt 46 from being worn (damaged) by the protrusion 49b.
- the shortest distance between the protrusion 49b and the mesh belt 46 is, for example, not less than 0.05 mm and not more than 0.5 mm.
- the mixing unit 50 mixes the first sorted product that has passed through the sorting unit 40 (the first sorted product conveyed by the first web forming unit 45) and the additive containing resin.
- the mixing unit 50 includes an additive supply unit 52 that supplies the additive, a pipe 54 that conveys the first selected product and the additive, and a blower 56.
- the additive is supplied from the additive supply unit 52 to the pipe 54 via the hopper 9.
- the tube 54 is continuous with the tube 7.
- the mechanism which mixes a 1st selection material and an additive is not specifically limited, It may stir with the blade
- the additive supply unit 52 As the additive supply unit 52 , a screw feeder as shown in FIG. 16 or a disc feeder (not shown) is used.
- the additive supplied from the additive supply unit 52 includes a resin for binding a plurality of fibers. At the time when the resin is supplied, the plurality of fibers are not bound. The resin melts when passing through the sheet forming portion 80 to bind a plurality of fibers.
- the resin supplied from the additive supply unit 52 is a thermoplastic resin or a thermosetting resin.
- a thermoplastic resin or a thermosetting resin for example, AS resin, ABS resin, polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylic resin, polyester resin, polyethylene terephthalate, Polyphenylene ether, polybutylene terephthalate, nylon, polyamide, polycarbonate, polyacetal, polyphenylene sulfide, polyether ether ketone, and the like. These resins may be used alone or in combination.
- the additive supplied from the additive supply unit 52 may be fibrous or powdery.
- the additive supplied from the additive supply unit 52 prevents coloring of the fibers and the aggregation of the fibers depending on the type of sheet to be produced.
- An anti-aggregation agent for making the fibers and a flame retardant for making the fibers difficult to burn may be included.
- the mixture (mixture of the first selection product and the additive) that has passed through the mixing unit 50 is transferred to the deposition unit 60 via the pipe 54.
- the deposition unit 60 introduces the mixture that has passed through the mixing unit 50 from the introduction port 62, loosens the entangled defibrated material (fibers), and lowers it while dispersing it in the air. Furthermore, when the additive resin supplied from the additive supply unit 52 is fibrous, the deposition unit 60 loosens the entangled resin. Thereby, the deposition unit 60 can deposit the mixture on the second web forming unit 70 with good uniformity.
- Rotating cylindrical sieve is used as the accumulation unit 60.
- the deposition unit 60 has a net, and drops fibers or particles (those that pass through the net) included in the mixture that has passed through the mixing unit 50 that are smaller than the mesh opening size.
- the configuration of the deposition unit 60 is the same as the configuration of the sorting unit 40, for example.
- the “sieving” of the accumulation unit 60 may not have a function of selecting a specific object. That is, the “sieving” used as the depositing unit 60 means that the net is provided, and the depositing unit 60 may drop all of the mixture introduced into the depositing unit 60.
- the second web forming unit 70 deposits the passing material that has passed through the depositing unit 60 to form the web W.
- the second web forming unit 70 includes, for example, a mesh belt 72, a tension roller 74, and a suction mechanism 76.
- the mesh belt 72 accumulates the passing material that has passed through the opening (opening of the mesh) of the accumulation unit 60 while moving.
- the mesh belt 72 is stretched by a stretching roller 74, and is configured to allow air to pass therethrough.
- the mesh belt 72 moves as the stretching roller 74 rotates. While the mesh belt 72 continuously moves, the passing material that has passed through the accumulation portion 60 is continuously piled up, whereby the web W is formed on the mesh belt 72.
- the mesh belt 72 is made of, for example, metal, resin, cloth, or non-woven fabric.
- the suction mechanism 76 is provided below the mesh belt 72 (on the side opposite to the accumulation unit 60 side).
- the suction mechanism 76 can generate an air flow directed downward (air flow directed from the accumulation unit 60 toward the mesh belt 72).
- the suction mechanism 76 By the suction mechanism 76, the mixture dispersed in the air by the deposition unit 60 can be sucked onto the mesh belt 72. Thereby, the discharge speed from the deposition part 60 can be increased.
- the suction mechanism 76 can form a downflow in the dropping path of the mixture, and can prevent the defibrated material and additives from being entangled during the dropping.
- the web W in a soft and swelled state containing a large amount of air is formed.
- the web W deposited on the mesh belt 72 is conveyed to the sheet forming unit 80.
- a humidity control unit 78 that adjusts the humidity of the web W is provided.
- the humidity control unit 78 can adjust the amount ratio of the web W and water by adding water or water vapor to the web W.
- the sheet forming unit 80 forms the sheet S by pressurizing and heating the web W deposited on the mesh belt 72.
- the sheet forming unit 80 by applying heat to the mixture of the defibrated material and the additive mixed in the web W, the plurality of fibers in the mixture are bound to each other via the additive (resin). Can do.
- the sheet forming unit 80 includes a pressurizing unit 82 that pressurizes the web W, and a heating unit 84 that heats the web W pressed by the pressurizing unit 82.
- the pressurizing unit 82 includes a pair of calendar rollers 85 and applies pressure to the web W. The web W is pressed to reduce its thickness, and the density of the web W is increased.
- the heating unit 84 for example, a heating roller (heater roller), a hot press molding machine, a hot plate, a hot air blower, an infrared heater, or a flash fixing device is used.
- the heating unit 84 includes a pair of heating rollers 86.
- the heating unit 84 By forming the heating unit 84 as the heating roller 86, the sheet S is formed while the web W is continuously conveyed as compared with the case where the heating unit 84 is configured as a plate-like pressing device (flat plate pressing device). Can do.
- the calendar roller 85 pressure unit 82
- the calendar roller 85 can apply a pressure higher than the pressure applied to the web W by the heating roller 86 (heating unit 84).
- the number of calendar rollers 85 and heating rollers 86 is not particularly limited.
- the cutting unit 90 cuts the sheet S formed by the sheet forming unit 80.
- the cutting unit 90 includes a first cutting unit 92 that cuts the sheet S in a direction that intersects the conveyance direction of the sheet S, and a second cutting unit 94 that cuts the sheet S in a direction parallel to the conveyance direction. ,have.
- the second cutting unit 94 cuts the sheet S that has passed through the first cutting unit 92, for example.
- a single sheet S of a predetermined paper size is formed.
- the cut single sheet S is discharged to the stacker 96.
- the sheet Pu determined to be non-reusable can be roughly crushed, and the crushed pieces of the sheet Pu can be recycled and used as a new sheet S.
- FIG. 17 is a schematic diagram illustrating a configuration of a sheet processing apparatus according to the first modification.
- the sheet processing apparatus 10c includes a supply unit 200, an image acquisition unit 300, a reversing unit 400, a crushing unit 12, a sheet storage unit 600, and the like.
- the image acquisition unit 300, the reversing unit 400, the crushing unit 12, and the like are arranged in the casing 190, but the supply unit 200 and the sheet storage unit 600 are arranged outside the casing 190.
- the configuration of each part of the sheet processing apparatus 10c shown in FIG. In this way, it is possible to supply and take out the sheet Pu without opening the housing 190, and the work becomes easy.
- the sheet processing apparatus 10 has a configuration in which the supply unit 200 and the sheet storage unit 600 are arranged in a gravity direction (vertical direction) relationship, that is, a vertical configuration.
- the configuration is not limited to this.
- a configuration in which the supply unit 200 and the sheet storage unit 600 are arranged in a horizontal (left-right) relationship, that is, a horizontal configuration may be used.
- FIG. 18 is a schematic diagram illustrating a configuration of a sheet processing apparatus according to the second modification.
- the sheet processing apparatus 10 d includes a supply unit 200, an image acquisition unit 300, a reversing unit 400, a crushing unit 12, a sheet storage unit 600, and the like. Further, the supply unit 200 and the sheet storage unit 600 are disposed to face each other in a substantially horizontal direction.
- the first image acquisition unit 300a that acquires the image of the first surface of the sheet Pu and the second image acquisition unit 300b that acquires the image of the second surface of the sheet Pu are provided.
- the configuration may be such that one image acquisition unit 300 is disposed only on one of the first surface and the second surface of the sheet Pu. That is, the number of installed image acquisition units 300 is not limited as long as it is possible to determine the reuse of the sheet Pu based on the recording state of the image on one side of the sheet Pu and the image on the other side of the sheet Pu. . In this way, the number of installed image acquisition units 300 can be reduced compared to the case where the image acquisition units 300 (300a, 300b) are installed corresponding to the respective surfaces of the sheet Pu.
- the reusable sheet Pu is discharged and stored in one sheet storage unit 600.
- the sheet storage unit 600 is arranged for each sheet size separately for each sheet size of the sheet Pu, and based on the image data Pu ′ acquired by the image acquisition unit 300, the sheet size of the sheet Pu (for example, A4 size or A3 It may be configured to be accommodated in the sheet accommodating portion 600 according to the size or the like. In this way, it is possible to make it easier to use the reused sheet Pu.
- the erasing unit 700 is a heating roller pair, but the present invention is not limited to this configuration.
- the erasing unit 700 may be a far infrared heater or the like. Even in this case, the image recorded with the decoloring ink can be erased (decolored) by heating the far infrared heater. Further, since the sheet Pu can be heated in a non-contact manner, damage to the sheet Pu can be prevented.
- a decoloring toner or decoloring ink for example, leuco dye ink
- a decoloring characteristic by heating it is not limited.
- it may be an ultraviolet erasable ink using an ultraviolet-sensitive photochromic compound that has an erasable property when irradiated with ultraviolet rays.
- an ultraviolet irradiation device that can irradiate ultraviolet rays may be used as the erasing unit 700.
- an erasing unit 700 (ultraviolet irradiation device) that irradiates ultraviolet rays toward the sheet Pu is disposed between the supply unit 200 and the image acquisition unit 300. By doing so, it is possible to erase (decolor) an image recorded with ultraviolet decoloring ink.
- near-infrared decoloring ink using a near-infrared sensitive photochromic compound having decoloring characteristics by irradiation with near-infrared may be used.
- an ultraviolet irradiation device that can irradiate near infrared rays may be used as the erasing unit 700.
- an erasing unit 700 near infrared irradiation device that irradiates near infrared rays toward the sheet Pu is disposed between the supply unit 200 and the image acquisition unit 300. In this way, an image recorded with near-infrared decoloring ink can be erased (decolored).
- the presence or absence of a recorded image of the sheet Pu is determined, and when it is determined that the sheet Pu is not reusable, the roughing unit 12 removes the sheet Pu.
- the sheet Pu may be roughly crushed by the crushing unit 12 when it is determined whether the surface state of the sheet Pu is abnormal and it is determined that the sheet Pu is not reusable. In this way, the sheet Pu unsuitable for reuse can be surely removed.
- the sheet processing apparatus 10b of the third embodiment regenerates the sheet Pu and forms a new sheet S by the dry papermaking method, it is not limited to this.
- a new sheet S may be formed by processing the sheet Pu by a wet papermaking method. Even if it does in this way, the same effect as the above can be acquired.
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- Control Or Security For Electrophotography (AREA)
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Abstract
Description
まず、シート処理装置の構成について説明する。本実施形態のシート処理装置は、シートを供給する供給部と、供給部から供給されるシートの画像を取得する画像取得部と、画像取得部により取得されたシートの画像に基づいて、当該シートの再利用の可否を判定する第1判定部と、第1判定部によりシートの第1面が再利用可であると判定されたとき、シートの第1面と第2面とを反転させることなく排出し、第1判定部によりシートの第2面が再利用可であると判定されたとき、シートの第1面と第2面とを反転させて排出する反転部と、を有する装置である。以下、具体的に説明する。
なお、画像取得部のセンサーは、CCDエリアセンサー、CMOSエリアセンサー、フォトダイオードセンサーでも良い。
次に、第2実施形態について説明する。本実施形態のシート処理装置は、シートを供給する供給部と、供給部から供給されるシートの画像を取得する画像取得部と、画像取得部により取得されたシートの画像に基づいて、当該シートの再利用の可否を判定する第1判定部と、第1判定部によりシートの第1面が再利用可であると判定されたとき、シートの第1面と第2面とを反転させることなく排出し、第1判定部によりシートの第2面が再利用可であると判定されたとき、シートの第1面と第2面とを反転させて排出する反転部と、を備えている。さらに、本実施形態のシート処理装置は、シートの搬送方向に沿って、供給部と画像取得部との間に配置され、シートに記録された画像を消去する消去部を有している。
ここで、消色について説明する。
インクジェットで利用可能な消色インクとして、所定の作用によって消色するインクが用いられる。例えば、光エネルギー、熱エネルギーなどを付与することで消色するインクが挙げられる。
光エネルギーの付与によって消色するインクとしては、フォトクロミック化合物を含むインク等を用いることができる。熱エネルギーの付与によって消色するインクとしては、ロイコ染料と顕色剤を含むインク等を用いることができる。
電子写真で利用可能な消色インクとして、消色可能なトナーとしては、所定の作用によって消色するトナーが用いられる。例えば、光エネルギー、熱エネルギーなどを付与することで消色するトナーが挙げられる。
光エネルギーの付与によって消色するトナーとしては、近赤外線感光色素と消色剤を含むトナーを用いることができる。
熱エネルギーの付与によって消色するトナーとしては、ロイコ染料、顕色剤、及びバインダー樹脂を含有するトナー等を用いることができる。この熱感応消色トナーは、ロイコ染料、顕色剤、温度コントロール剤がひとつになったマイクロカプセルと、熱可塑性樹脂とワックスなどで構成され、熱を加えることによって分子振動が発生し、色素と顕色剤との結合が切られる。そして、消去剤と色素を結合させることで色素が無色化されて、色を消すことができる。
なお、本実施形態では、加熱によって消色特性を有する消色トナーあるいは消色インクで記録された画像を消去する場合の構成について説明する。
次に、第3実施形態について説明する。本実施形態のシート処理装置は、シートを供給する供給部と、供給部から供給されるシートの画像を取得する画像取得部と、画像取得部により取得されたシートの画像に基づいて、当該シートの再利用の可否を判定する第1判定部と、第1判定部によりシートの第1面が再利用可であると判定されたとき、シートの第1面と第2面とを反転させることなく排出し、第1判定部によりシートの第2面が再利用可であると判定されたとき、シートの第1面と第2面とを反転させて排出する反転部と、シートを粗砕する粗砕部と、粗砕部により粗砕された粗砕片を解繊物に解繊する解繊部と、解繊物の少なくとも一部を用いてシートを成形するシート成形部と、を有する装置である。以下、具体的な構成について説明する。
あるいは別の例として、近赤外線の照射によって消色特性を有する近赤外感応フォトクロミック化合物を用いた近赤外線消色インクであってもよい。この場合、消去部700として近赤外線を照射可能な紫外線照射装置を用いればよい。具体的には、供給部200と画像取得部300との間にシートPuに向けて近赤外線を照射する消去部700(近赤外線照射装置)を配置する。このようにすれば、近赤外線消色インクで記録された画像を消去(消色)することができる。
Claims (6)
- シートを供給する供給部と、
前記供給部から供給されるシートの画像を取得する画像取得部と、
前記画像取得部により取得されたシートの画像に基づいて、当該シートの再利用の可否を判定する第1判定部と、
前記第1判定部によりシートの第1面が再利用可であると判定されたとき、シートの第1面と第2面とを反転させることなく排出し、前記第1判定部によりシートの第2面が再利用可であると判定されたとき、シートの第1面と第2面とを反転させて排出する反転部と、を有することを特徴とするシート処理装置。 - 請求項1に記載のシート処理装置において、
シートを粗砕する粗砕部を有し、
前記第1判定部によりシートの第1面及び第2面ともに再利用不可であると判定されたとき、当該シートを前記粗砕部により粗砕することを特徴とするシート処理装置。 - 請求項2に記載のシート処理装置において、
前記粗砕部により粗砕された粗砕片を解繊物に解繊する解繊部と、
解繊物の少なくとも一部を用いてシートを成形するシート成形部と、を有することを特徴とするシート処理装置。 - 請求項2または請求項3に記載のシート処理装置において、
前記第1判定部は、前記画像取得部により取得されたシートの画像に基づいて、当該シートの表面状態に異状があるか否かを判定する第2判定部を有し、
前記第2判定部によりシートの表面状態に異状があると判定されたとき、当該シートを前記粗砕部により粗砕することを特徴とするシート処理装置。 - 請求項1から請求項4のいずれか一項に記載のシート処理装置において、
シートの搬送方向に沿って、前記供給部と前記画像取得部との間に配置され、シートに記録された画像を消去する消去部を有することを特徴とするシート処理装置。 - シートを供給し、
供給されるシートの画像を取得し、
取得されたシートの画像に基づいて、当該シートの再利用の可否を判定し、
シートの第1面が再利用可であると判定したとき、シートの第1面と第2面とを反転させることなく排出し、シートの第2面が再利用可であると判定したとき、シートの第1面と第2面とを反転させて排出することを特徴とするシート処理方法。
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US15/767,695 US20180304275A1 (en) | 2015-10-15 | 2016-10-13 | Sheet processing device, and sheet processing method |
JP2017517381A JPWO2017065230A1 (ja) | 2015-10-15 | 2016-10-13 | シート処理装置、シート処理方法 |
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JPH0517076A (ja) * | 1991-07-10 | 1993-01-26 | Ricoh Co Ltd | 用紙表裏検知処理装置 |
JPH05221581A (ja) * | 1992-02-12 | 1993-08-31 | Hitachi Ltd | 印刷制御装置 |
JP2000255909A (ja) * | 1999-03-03 | 2000-09-19 | Sharp Corp | 画像形成装置 |
JP2007106035A (ja) * | 2005-10-14 | 2007-04-26 | Canon Inc | 印刷システムおよび印刷用紙仕分けシステム |
JP2012144819A (ja) * | 2011-01-12 | 2012-08-02 | Seiko Epson Corp | 紙再生装置及び紙再生方法 |
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CN101907842A (zh) * | 2009-06-03 | 2010-12-08 | 株式会社东芝 | 图像形成装置和图像形成装置的薄片输送方法 |
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JPH0517076A (ja) * | 1991-07-10 | 1993-01-26 | Ricoh Co Ltd | 用紙表裏検知処理装置 |
JPH05221581A (ja) * | 1992-02-12 | 1993-08-31 | Hitachi Ltd | 印刷制御装置 |
JP2000255909A (ja) * | 1999-03-03 | 2000-09-19 | Sharp Corp | 画像形成装置 |
JP2007106035A (ja) * | 2005-10-14 | 2007-04-26 | Canon Inc | 印刷システムおよび印刷用紙仕分けシステム |
JP2013200320A (ja) * | 2009-07-17 | 2013-10-03 | Toshiba Corp | 消去装置、消去システム、及び消去装置の制御方法 |
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