WO2017119193A1 - 記録媒体搬送装置および記録装置 - Google Patents
記録媒体搬送装置および記録装置 Download PDFInfo
- Publication number
- WO2017119193A1 WO2017119193A1 PCT/JP2016/083691 JP2016083691W WO2017119193A1 WO 2017119193 A1 WO2017119193 A1 WO 2017119193A1 JP 2016083691 W JP2016083691 W JP 2016083691W WO 2017119193 A1 WO2017119193 A1 WO 2017119193A1
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- WO
- WIPO (PCT)
- Prior art keywords
- recording medium
- roller
- recording
- driven roller
- unit
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/02—Rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/16—Means for tensioning or winding the web
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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
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/032—Controlling transverse register of web
- B65H23/038—Controlling transverse register of web by 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
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between 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
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/13—Details of longitudinal profile
- B65H2404/132—Details of longitudinal profile arrangement of segments along axis
- B65H2404/1321—Segments juxtaposed along axis
-
- 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
- B65H2404/10—Rollers
- B65H2404/14—Roller pairs
- B65H2404/142—Roller pairs arranged on movable frame
- B65H2404/1424—Roller pairs arranged on movable frame moving in parallel to their axis
-
- 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
- B65H2404/10—Rollers
- B65H2404/14—Roller pairs
- B65H2404/143—Roller pairs driving roller and idler roller arrangement
-
- 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
- B65H2404/10—Rollers
- B65H2404/15—Roller assembly, particular roller arrangement
- B65H2404/152—Arrangement of roller on a movable frame
- B65H2404/1523—Arrangement of roller on a movable frame moving in parallel to its axis
-
- 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
- B65H2801/36—Plotting
Definitions
- the present invention relates to a recording medium transport apparatus and a recording apparatus including the recording medium transport apparatus.
- An ink jet printer serving as a recording apparatus is configured so that a desired recording medium is obtained by alternately repeating an operation of ejecting ink droplets from a recording head and an operation of moving the recording medium on a recording medium conveyed on a platen. Record an image.
- a nip roller composed of a driving roller and a driven roller is arranged before and after the platen in the conveyance path of the recording medium, the recording medium is set at a predetermined recording position on the platen, and a predetermined amount is set by the nip roller. Describes a recording apparatus for recording an image in a desired range of a recording medium while moving (pitch feeding).
- the present invention has been made to solve at least a part of the above-described problems, and can be realized as the following application examples or forms.
- a recording medium conveyance device includes a driving roller and a driven roller arranged in parallel with each other in the roller axis direction, and the recording medium is sandwiched between the driving roller and the driven roller.
- a recording medium conveying apparatus that conveys the recording medium by driving the driving roller in a state where the driven roller is supported movably from a predetermined position in the roller axis direction, and the driven roller is The driven roller moves to the predetermined position in the roller axial direction when the recording medium is not sandwiched between the driving roller and the recording medium is separated from the driving roller.
- the driven roller is supported so as to be movable from a predetermined position in the roller axial direction. Is easier to move to. As a result, for example, even when a force in the roller axis direction that is likely to cause wrinkles is acting on the recording medium, the recording medium can be moved gradually with conveyance according to the force. For example, it is possible to eliminate the occurrence of wrinkles due to the accumulation of misalignment. Further, when the driven roller is separated from the driving roller without sandwiching the recording medium between the driving roller and the driven roller, the driven roller moves to a predetermined position in the roller axial direction. In the initial state where the recording medium is sandwiched, the driven roller can be moved from a predetermined position. For example, by setting the predetermined position at the center of the movable range, there is no restriction on the moving direction.
- the driven roller when the driven roller moves from a predetermined position in the roller axial direction, the driven roller is biased in a direction to return to the predetermined position, so that the driven roller records between the driving roller and the driven roller.
- the driven roller moves to a predetermined position in the roller axial direction. Therefore, in the initial state where the recording medium is sandwiched between the driving roller and the driven roller, the driven roller can be moved from a predetermined position.
- the recording medium conveyance device includes a detection unit that detects that the movement amount of the driven roller from the predetermined position in the roller axis direction has reached a maximum allowable movement amount. It is characterized by that.
- the amount of movement of the driven roller from the predetermined position has reached the maximum allowable amount of movement. For example, when the driven roller moves while eliminating the misalignment of the recording medium, and the amount of movement reaches the maximum allowable moving amount, and it becomes impossible to eliminate the misalignment, appropriate measures are taken based on the detection result. It becomes possible.
- a recording medium unwinding unit that accommodates the rolled recording medium and unwinds the recording medium, and a recording medium that winds the unwound recording medium And a winding unit.
- the recording medium supplied in a roll state can be transported while being sandwiched between the driving roller and the driven roller.
- the driven roller is supported so as to be movable from a predetermined position in the roller axis direction, even if the recording medium is continuously conveyed while being sandwiched between the driving roller and the driven roller, a slight amount of the recording medium The conveyance can be continued while eliminating the misalignment without accumulating the misalignment. As a result, generation of wrinkles on the recording medium is suppressed.
- the maximum allowable movement amount is D
- the length of the conveyance path of the recording medium from the recording medium unwinding unit to the recording medium winding unit is L1.
- D is the length of the conveyance path of the recording medium from the recording medium unwinding section to the position where the recording medium is sandwiched between the driving roller and the driven roller.
- the recording medium winding unit when the conveyance path of the recording medium from the recording medium winding unit to the recording medium winding unit is configured to be linear when viewed in a virtual plane, the recording medium winding unit The winding position deviation at can be suppressed to 10 mm or less.
- a recording apparatus includes the recording medium conveyance device according to the application example described above and a recording unit that performs recording on the recording medium.
- FIG. 3 is a perspective view of a recording apparatus that includes the recording medium conveying apparatus according to the first embodiment.
- FIG. 3 is a conceptual diagram illustrating a configuration of a recording apparatus including the recording medium conveyance apparatus according to the first embodiment.
- the perspective view which shows the structure of a part of conveyance part.
- the front view which looked at a mode that a driven roller was supported by the arm part from the + Y side.
- FIG. 5 is a conceptual diagram illustrating a configuration of a recording apparatus including a recording medium conveyance apparatus according to a second embodiment.
- route from the unwinding part which the conveyance part comprises to the winding-up part to a virtual plane.
- the conceptual diagram which shows the modification of the structure which moves a driven roller to a predetermined position.
- the scale may be different from the actual scale for easy understanding.
- the Z-axis direction is the vertical direction
- the + Z direction is the upward direction
- the Y-axis direction is the front-rear direction
- the + Y direction is the front direction
- the X-axis direction is the left-right direction
- the + X direction is the left direction
- X The -Y plane is the horizontal plane.
- FIG. 1 is a perspective view of a recording apparatus 200 including a recording medium conveyance apparatus according to the first embodiment.
- FIG. 2 is a conceptual diagram showing the configuration of the recording apparatus 200.
- the recording apparatus 200 is an ink jet printer capable of recording (printing) on the recording medium 1 that is manually fed from the front surface of the recording apparatus 200, and includes a recording unit 210 that performs recording on the recording medium 1, and a set recording A transport unit 100 as a “recording medium transport device” that transports the medium 1, a control unit 230 that controls the entire recording device 200, and the like are provided.
- the recording medium 1 that is manually supplied to the recording apparatus 200 is, for example, printing paper.
- the recording unit 210 is equipped with an ejection head 212 that ejects ink droplets and an ejection head 212, and scans on the surface of the recording medium 1 supplied by the transport unit 100 (the transport unit 100 transports (moves the recording medium 1).
- a carriage 211 that moves in the X-axis direction intersecting the direction).
- the recording apparatus 200 intersects the scanning direction in a recording operation in which ink droplets are ejected from the ejection head 212 while the carriage 211 is scanned and moved, and in a recording region in which ink droplets are ejected from the ejection head 212.
- a desired image is formed (recorded) on the recording medium 1 by alternately repeating the conveying operation of moving the recording medium 1 in the direction.
- the transport unit 100 includes a plurality of transport rollers 110, a platen 120, a recording medium guide guide 130, a back supporter 140, and the like.
- the recording medium guide sandwiches the recording area from the recording medium guide guide 130 through the recording area of the recording unit 210.
- a conveyance path that allows the recording medium 1 to move back and forth is formed up to the recording standby area on the opposite side of the guide 130.
- the transport roller 110 is configured to include a drive roller 111 and a pair of driven rollers 112 corresponding to the drive roller 111.
- the driven roller 112 applies urging force to the pair of driving rollers 111 in the direction of pressing the recording medium 1 and nips.
- the driven roller 112 opens the nip so that the recording medium 1 is loosely inserted into the conveyance path in the recording medium guide guide 130 until the alignment is completed.
- the platen 120 is disposed in the recording area and supports the recording medium 1 in the recording area.
- the back supporter 140 is disposed in the recording standby area and supports the recording medium before recording.
- a plurality (two sets in the example shown in FIG. 2) of the transport rollers 110 are driven and controlled by the control unit 230, and the recording medium 1 that has been set in the recording medium guide guide 130 is temporarily moved to the recording standby area of the back supporter 140.
- the recording medium 1 is moved to the recording area on the platen 120 and moved along with the recording operation.
- the recording medium 1 for which recording has been completed is discharged from the recording area again by the transport roller 110 through the recording medium guide guide 130.
- the direction in which the recording medium 1 passes through the recording medium guide guide 130 in accordance with the discharging operation is referred to as a discharging direction.
- the control unit 230 controls the recording unit 210 and the conveying unit 100 as described above based on image data received from an external electronic device such as a personal computer or an external storage medium, and forms an image on the recording medium 1.
- the recording medium 1 set from the recording medium guide guide 130 is not sufficiently aligned (positioned), and the recording medium 1 is set in the recording apparatus 200 or in the transport path. Due to the misalignment, the recording medium 1 may be wrinkled in the conveyance path.
- the recording medium conveyance device (conveyance unit 100) is configured as described below.
- the transport unit 100 in the present embodiment is provided with transport rollers 110 before and after the platen 120 in the transport path of the recording medium 1.
- the transport roller 110 includes a driving roller 111 and a driven roller 112 that are arranged in parallel with each other in the axial direction of the roller, and drives the driving roller 111 with the recording medium 1 being sandwiched between the driving roller 111 and the driven roller 112. By doing so, the recording medium 1 is conveyed.
- the driven roller 112 when the driven roller 112 is supported so as to be movable from a predetermined position in the roller axial direction, and the driven roller 112 is separated from the driving roller 111 without sandwiching the recording medium 1 between the driving roller 111, The driven roller 112 is biased to return to a predetermined position. This will be specifically described below.
- FIG. 3 is a perspective view illustrating a partial configuration of the transport unit 100.
- FIG. 3 shows the transport roller 110 on the ⁇ Y side of the platen 120, the transport roller 110 on the + Y side of the platen 120 has the same configuration.
- illustration is abbreviate
- the drive roller 111 extends over the width direction (X-axis direction) of the platen 120 with a length that covers the maximum width of the recording medium 1 targeted by the recording apparatus 200. Further, the driving roller 111 has a rotational axis AA on the lower side of the platen 120 so that the recording medium 1 is nipped between the driven roller 112 at the height of the conveyance surface of the recording medium 1 formed by the platen 120. It is provided to rotate at. A plurality of driven rollers 112 are provided side by side in the width direction of the opposed driving roller 111 on the upper side of the platen 120, and the rotation shaft BB is supported by the support member 113.
- the support member 113 has an arm part 114 that supports the rotation axis BB of the driven roller 112, and the support member 113 rotates on the opposite side of the arm part 114 (the -Y side in the example of FIG. 3). It has an axis CC.
- the supporting member 113 can press the plurality of driven rollers 112 against the driving roller 111 or can be separated from the driving roller 111 by rotating about the rotation axis CC.
- the driving mechanism for rotating the support member 113 is not shown. Further, the rotation axis AA, the rotation axis BB, and the rotation axis CC are provided in parallel with the X-axis direction.
- FIG. 4 is a front view of a state in which the driven roller 112 is supported by the arm portion 114 as viewed from the + Y side.
- the driven roller 112 is supported so as to be movable in the range of the width Lw in the roller axis direction (direction of the rotation axis BB) between the supported arm portions 114.
- a spring material 115 provided so that the rotation shaft of the driven roller 112 is loosely inserted is disposed.
- the spring material 115 presses the driven roller 112 toward the center positions of the arm portions 114 on both sides of the driven roller 112 with such a strength that does not hinder the movement of the driven roller 112.
- the driven roller 112 when the driven roller 112 is separated from the driving roller 111 without sandwiching the recording medium 1 between the driving roller 111 (when the driven roller 112 is in a free state), the driven roller 112 is “ It is urged by the elastic force of the spring material 115 so as to return to the center position of the arm portions 114 on both sides of the driven roller 112 as a “predetermined position”.
- FIG. 5 is a front view of the state where the driven roller 112 is pressed by the driving roller 111 while being supported by the arm portion 114 and the recording medium 1 is sandwiched (nip) with the driving roller 111 as viewed from the + Y side. It is.
- the driven roller 112 is driven not only by the rotation of the driving roller 111 but also by the stress in the roller axial direction (direction of the rotational axis BB) received from the recording medium 1 sandwiched between the driven roller 111 and the roller axis direction. It can move in the direction of the rotation axis BB. Since the movable range of the driven roller 112 is a range narrower than the gap width between the arm portions 114 (the range of the width Lw shown in FIG. 4), the stress that needs to move beyond this range is continuously received from the recording medium 1. In addition, the driven roller 112 loses its ability to follow this stress.
- the movement amount from the predetermined position of the driven roller 112 (the center position of the arm portions 114 on both sides of the driven roller 112) in the roller axis direction (direction of the rotation axis BB) is the maximum allowable movement amount.
- a detection unit 116 is provided for detecting the arrival.
- the detection unit 116 is configured such that, for example, the distance between one end of the driven roller 112 in the roller axial direction (direction of the rotation axis BB) and the side wall of the arm unit 114 facing the end is the amount of movement of the driven roller 112. It is detected that Lmin corresponding to the position where the maximum allowable movement amount has been reached.
- This detection may be an electrical detection circuit or an optical detection circuit.
- the circuit for electrical detection for example, a circuit that detects electrical contact when Lmin is reached, or a circuit that detects a change in the distance between the electrodes based on a change in capacitance can be considered.
- an optical detection circuit for example, a circuit that has an irradiation unit and a light receiving unit, and detects when the light reaches the Lmin, the detection is based on the amount of received light that is changed by blocking the irradiation light and its reflected light. .
- the urging force of the spring material 115 is preferably sufficiently weak against the stress received from the recording medium 1. Further, the biasing force for returning the driven roller 112 to a predetermined position may use a repulsive magnetic force instead of using the elastic force of the spring material 115.
- the driven roller 112 is supported so as to be movable from a predetermined position in the roller axis direction (direction of the rotation axis BB), the recording medium 1 is held between the driving roller 111 and the driven roller 112.
- the movement in the roller axial direction is easier.
- the recording medium 1 may be gradually moved with conveyance according to the force. In this way, for example, it is possible to eliminate the occurrence of wrinkles due to accumulation of misalignment.
- the driven roller 112 when the driven roller 112 is separated from the driving roller 111 without sandwiching the recording medium 1 with the driving roller 111, the driven roller 112 is urged to return to a predetermined position.
- the driven roller 112 In an initial state in which the recording medium 1 is sandwiched between the roller 111 and the driven roller 112, the driven roller 112 can be moved from a predetermined position. For example, by setting the predetermined position at the center of the movable range, there is no restriction on the moving direction.
- the detection unit 116 that detects that the amount of movement of the driven roller 112 from the predetermined position in the roller axis direction has reached the maximum allowable amount of movement, the amount of movement of the driven roller 112 from the predetermined position is the maximum allowable amount. It is possible to detect that the movement amount has been reached. For example, when the driven roller 112 moves while eliminating the misalignment of the recording medium 1 and the movement amount reaches the maximum allowable movement amount, and the alignment misalignment cannot be eliminated, an appropriate treatment is performed based on the detection result. Can be performed.
- the recording apparatus 200 includes the transport unit 100 as a “recording medium transport apparatus”, so that it is possible to perform recording in which the misalignment and the wrinkles of the recording medium 1 due to the misalignment are suppressed.
- the conveyance roller 110 is provided before and after the platen 120 in the conveyance path of the recording medium 1 has been described.
- the present invention is not limited to this configuration.
- FIG. 6 is a conceptual diagram illustrating a configuration of a recording apparatus 300 including the recording medium conveyance apparatus according to the second embodiment.
- the recording apparatus 300 is an ink jet printer that records (prints) an image on a roll paper 301 supplied in a rolled state as a “recording medium”.
- the roll paper 301 for example, high-quality paper, cast paper, art paper, coated paper, synthetic paper, and the like can be used.
- the recording medium is not limited to such paper, and for example, a long film or fabric made of PET (Polyethylene terephthalate), PP (polypropylene), or the like can be used.
- the recording apparatus 300 includes a recording unit 210, a conveyance unit 320 as a “recording medium conveyance device”, a control unit 360, and the like.
- the recording unit 210 is configured by a serial head that reciprocates in the scanning direction (X-axis direction) as described above, but the width direction of the roll paper 301 in the direction intersecting the nozzle for ejecting ink with the conveying direction.
- a configuration of line heads arranged over a range may be used.
- a recording apparatus having a recording unit other than the so-called ink jet recording head as described above may be used.
- the conveyance unit 320 is a conveyance mechanism that moves the roll paper 301 in the conveyance direction, and includes a plurality of conveyance rollers 110, a platen 120, conveyance paths 351 and 352, an unwinding unit 330 as a “recording medium unwinding unit”, and “recording”.
- the winding unit 340 is a medium winding unit.
- the roll paper 301 is supplied from the unwinding unit 330 and is stored in the winding unit 340 via the conveyance path 351, the recording unit 210 (platen 120), and the conveyance path 352 in accordance with the recording operation. Further, the transport unit 320 can move the roll paper 301 in the reverse transport direction opposite to the transport direction by driving the drive roller 111 in reverse to feed back the roll paper 301.
- the back feed is performed over the entire surface when, for example, recording (printing) is further performed on the recorded roll paper 301, or when cueing (adjustment of the recording start position) between recording (printing) jobs is performed. This is performed when the roll paper 301 on which recording has been completed is rewound onto the unwind unit 330.
- the unwinding unit 330 is a storage unit that stores the roll paper 301 before recording is performed, and is positioned on the upstream side of the recording unit 210 and the transporting path 351 in the transporting path, and includes an unwinding reel 331 and the like.
- the unwinding reel 331 is rotated by an unwinding motor (not shown) driven and controlled by the control unit 360, and the roll paper 301 is directed toward the conveyance path 351 and the recording unit 210 disposed on the downstream side of the unwinding unit 330. Unwind. Further, the unwinding unit 330 can wind up the roll paper 301 to be back-fed by driving the unwinding reel 331 in reverse.
- the winding unit 340 is a storage unit that winds the roll paper 301 after recording and stores the rolled paper 301 in a roll shape, and is positioned downstream of the recording unit 210 and the transport path 352 in the transport path. And a take-up reel 341 and the like.
- the take-up reel 341 has a rotating shaft that is rotated by a take-up motor (not shown) that is driven and controlled by the control unit 360, and a roll that has been sent via the recording unit 210 and the conveyance path 352 with the rotating shaft as an axis.
- the paper 301 is wound up.
- the take-up unit 340 can unwind the roll paper 301 to be back-fed by driving the take-up reel 341 in the reverse direction.
- the conveyance path formed by the conveyance unit 320 is a path that conveys the roll paper 301 from the unwinding unit 330 to the winding unit 340 via the recording unit 210 or back-feeds in the reverse path. 351, a platen 120 that supports the roll paper 301 in the recording area of the recording unit 210, a conveyance path 352, a rotating bar member 353, and the like.
- the rotating bar member 353 extends across the width direction of the roll paper 301 between the conveyance path 352 and the winding unit 340.
- the rotating shaft of the rotating bar member 353 is fixedly supported by the main body of the recording apparatus 300, and the rotating bar member 353 rotates with the movement of the roll paper 301 in contact with the rotating bar member 353 to support the movement of the roll paper 301.
- the rotation bar member 353 does not necessarily have a rotation axis, and may be a fixed bar member that extends in the width direction of the roll paper 301 and supports the roll paper 301.
- the control unit 360 controls the recording unit 210 and the conveyance unit 320 as described above based on image data received from an external electronic device such as a personal computer or an external storage medium, and forms an image on the roll paper 301.
- FIG. 7 is a schematic diagram in which a conveyance path from the unwinding unit 330 to the winding unit 340 that is configured by the conveyance unit 320 is developed on a virtual plane.
- the maximum allowable movement amount that is the maximum allowable amount of movement from the predetermined position of the driven roller 112 (the central position of the arm portions 114 on both sides of the driven roller 112 (see FIG. 4)) is specifically as follows. Is set. In the present embodiment, as shown in FIG. 6, a description will be given of a case where the conveyance rollers 110 are provided before and after the platen 120 in the conveyance path of the roll paper 301.
- the length of the conveyance path of the roll paper 301 from the unwinding unit 330 to the winding unit 340 is L1, and the roll from the unwinding unit 330 to a position where the roll paper 301 is sandwiched between the driving roller 111 and the driven roller 112
- L2a upstream side of the platen 120
- L2b downstream side of the platen 120
- the maximum allowable movement amount is set on the assumption that the amount of blur due to misalignment tends to increase as the roll paper 301 set with the unwinding unit 330 as the starting point moves away from the starting point along the conveyance path. .
- the roll paper 301 supplied in a roll state can be conveyed while being sandwiched between the driving roller 111 and the driven roller 112, and can be wound up. Further, since the driven roller 112 is supported so as to be movable from a predetermined position in the roller axis direction, even if the roll paper 301 is continuously conveyed while being sandwiched between the driving roller 111 and the driven roller 112, the driven roller 112 is slightly Therefore, the conveyance can be continued while eliminating the misalignment without accumulating misalignment of the roll paper 301. As a result, generation of wrinkles in the roll paper 301 is suppressed.
- the conveyance path of the roll paper 301 from the unwinding unit 330 to the winding unit 340 is configured in a straight line when viewed in a virtual plane, the winding position deviation in the winding unit 340 is detected. It can be suppressed to 10 mm or less.
- the recording apparatus 300 includes the transport unit 320 as a “recording medium transport apparatus”, thereby performing recording in which misalignment and wrinkles of the roll paper 301 due to the misalignment are suppressed.
- the elastic force of the spring material 115 is used to return the driven roller 112 to the predetermined position when the driven roller 112 moves from the predetermined position.
- the structure where power is added it is not limited to this.
- the biasing toward the predetermined position is not performed, and when the driven roller 112 becomes free, the biasing toward the predetermined position is performed. Also good.
- the urging force for returning the driven roller 112 to a predetermined position uses a repulsive electromagnetic force instead of using the elastic force of the spring material 115, and the control of the control unit 230 is performed.
- a method of generating an urging force for returning the driven roller 112 to a predetermined position by an electromagnetic force only when the driven roller 112 becomes free may be used.
- a driving force such as a motor or air (compressed air) may be used.
- the driven roller 112 is driven by the control of the control unit 230 only when the driven roller 112 is free using the cylindrical cam 117 that rotates by the driving force of the motor. It is also possible to use a method for returning to a predetermined position.
- SYMBOLS 1 DESCRIPTION OF SYMBOLS 1 ... Recording medium, 100 ... Conveyance part, 110 ... Conveyance roller, 111 ... Drive roller, 112 ... Driven roller, 113 ... Support member, 114 ... Arm part, 115 ... Spring material, 116 ... Detection part, 120 ... Platen, 130 DESCRIPTION OF SYMBOLS RECORDING MEDIUM GUIDANCE GUIDE 140 BACK SUPPORTER 200 RECORDING APPARATUS 210 RECORDING UNIT 211 CARRIAGE 212 EJECTING HEAD 230 CONTROL UNIT 300 RECORDING APPARATUS 301 ROLL ROLL 320 320 CONVEYING UNIT 330 ... unwinding unit, 331 ... unwinding reel, 340 ... winding unit, 341 ... winding reel, 351, 352 ... transport path, 360 ... control unit.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handling Of Sheets (AREA)
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Abstract
Description
特許文献1には、駆動ローラーと従動ローラーとからなるニップローラーを、記録媒体の搬送経路においてプラテンの前後に配置し、記録媒体をプラテン上の所定の記録位置にセットし、ニップローラーにより所定量の移動(ピッチ送り)を行いながら、記録媒体の所望範囲に画像を記録する記録装置が記載されている。
<記録装置>
図1は、実施形態1に係る記録媒体搬送装置を備えた記録装置200の斜視図である。また、図2は、記録装置200の構成を示す概念図である。
記録装置200は、記録装置200の前面から手差しで供給される記録媒体1に記録(印刷)が可能なインクジェット式のプリンターであり、記録媒体1に記録を行う記録部210と、セットされた記録媒体1を搬送する「記録媒体搬送装置」としての搬送部100、記録装置200全体を制御する制御部230などを備えている。記録装置200に手差しで供給する記録媒体1は、例えば、印刷用紙である。
記録装置200は、制御部230の制御により、キャリッジ211を走査移動させながら吐出ヘッド212からインク滴を吐出する吐出動作と、吐出ヘッド212からインク滴が吐出される記録領域において走査方向と交差する方向に記録媒体1を移動させる搬送動作とを交互に繰り返すことにより、記録媒体1に所望の画像を形成(記録)する。
プラテン120は、記録領域に配置され、記録媒体1を記録領域において支持する。背面サポーター140は、記録待機領域に配置され、記録前の記録媒体を支持する。
本実施形態における搬送部100は、図2に示すように、記録媒体1の搬送経路において、プラテン120の前後に搬送ローラー110が設けられている。
搬送ローラー110は、ローラー軸方向が互いに平行に配置される駆動ローラー111と従動ローラー112とを備え、駆動ローラー111と従動ローラー112との間に記録媒体1を挟持した状態で駆動ローラー111を駆動することにより記録媒体1を搬送する。また、従動ローラー112が、ローラー軸方向において所定位置から移動可能に支持され、従動ローラー112が、駆動ローラー111との間に記録媒体1を挟持せずに駆動ローラー111から離間しているときには、従動ローラー112が所定位置に戻るように付勢されている。
以下に具体的に説明する。
図3には、プラテン120の-Y側の搬送ローラー110を示しているが、プラテン120の+Y側の搬送ローラー110も同様の構成となっている。なお、搬送ローラー110(駆動ローラー111)を回転させる駆動機構については、図示を省略している。
従動ローラー112は、プラテン120の上方側において、対向する駆動ローラー111の幅方向に亘って、複数、直列に並んで設けられ、その回転軸B-Bが支持部材113によって支持されている。
支持部材113は、回転軸C-Cで回動することにより、駆動ローラー111に対して複数の従動ローラー112を押圧したり、駆動ローラー111から離間させたりすることができる。なお、支持部材113を回動させる駆動機構については、図示を省略している。
また、回転軸A-A、回転軸B-B、回転軸C-Cは、それぞれX軸方向と平行に設けられている。
従動ローラー112は、支持されるアーム部114間において、ローラー軸方向(回転軸B―Bの方向)に幅Lwの範囲で移動可能に支持されている。従動ローラー112の両側の従動ローラー112とアーム部114との間には、従動ローラー112の回転軸が遊挿されるように設けられたバネ材115が配置されている。バネ材115は、従動ローラー112の動きを妨げない程度の強さで、従動ローラー112を従動ローラー112の両側のアーム部114の中央位置に向けて押圧している。つまり、従動ローラー112が、駆動ローラー111との間に記録媒体1を挟持せずに駆動ローラー111から離間しているとき(従動ローラー112がフリーの状態のとき)には、従動ローラー112が「所定位置」としての従動ローラー112の両側のアーム部114の中央位置に戻るようにバネ材115の弾性力によって付勢されている。
従動ローラー112は、駆動ローラー111の回転によって従動回転するだけでなく、駆動ローラー111との間に挟持する記録媒体1から受けるローラー軸方向(回転軸B-Bの方向)の応力によってローラー軸方向(回転軸B-Bの方向)に移動することができる。従動ローラー112の可動範囲は、アーム部114間の間隙幅より狭い範囲(図4に示す幅Lwの範囲)であるため、この範囲を超える移動が必要な応力を記録媒体1から受け続けた場合に、従動ローラー112は、この応力に追随する機能が失われる。
検出部116は、例えば、従動ローラー112のローラー軸方向(回転軸B-Bの方向)の一方の端部と、これに対向するアーム部114の側壁との距離が、従動ローラー112の移動量が最大許容移動量に達した位置に対応するLminに達したことを検出する。この検出は、電気的に検出する回路であっても良いし、光学的に検出する回路であっても良い。電気的に検出する回路としては、例えば、Lminに達した際に、電気的な接触を検知する回路や、電極間の距離の変化を静電容量の変化で感知する回路などが考えられる。光学的に検出する回路としては、例えば、照射部と受光部とを有し、Lminに達した際に、照射光やその反射光が遮られることによって変化する受光量により検知する回路が考えられる。
また、従動ローラー112を所定位置に戻すための付勢には、バネ材115による弾性力を利用する代わりに、反発しあう磁力を利用する構成であっても良い。
従動ローラー112が、ローラー軸方向(回転軸B-Bの方向)において所定位置から移動可能に支持されているため、記録媒体1は、駆動ローラー111と従動ローラー112とによって挟持された状態であっても、ローラー軸方向への移動がより容易である。その結果、例えば、記録媒体1にしわが発生しそうなローラー軸方向の力が働いていた場合であっても、その力に応じ、搬送に伴って徐々に記録媒体1が移動するようにすることが可能であり、これにより、例えば、位置ずれが累積してしわが発生することなどを解消させることができる。また、従動ローラー112が、駆動ローラー111との間に記録媒体1を挟持せずに駆動ローラー111から離間しているときには、従動ローラー112が所定位置に戻るように付勢されているため、駆動ローラー111と従動ローラー112とによって記録媒体1を挟持する初期状態においては、従動ローラー112は、所定位置からの移動が可能となる。例えば、所定位置を移動可能範囲の中央とすることで、移動方向に対する制約が無くなる。
なお、本実施形態では、図2に示すように、記録媒体1の搬送経路において、プラテン120の前後に搬送ローラー110が設けられている場合で説明したが、この構成に限定するものではない。例えば、搬送ローラー110が一つ(一対の従動ローラー112と駆動ローラー111)や3つ以上の構成であっても良い。
次に、実施形態2に係る記録媒体搬送装置およびこの記録媒体搬送装置を備えた記録装置300について説明する。なお、説明にあたり、上述した実施形態と同一の構成部位については、同一の符号を使用し、重複する説明は省略する。
図6は、実施形態2に係る記録媒体搬送装置を備えた記録装置300の構成を示す概念図である。
記録装置300は、「記録媒体」としてのロール状に巻かれた状態で供給されるロール紙301に画像を記録(印刷)するインクジェット式プリンターである。
ロール紙301としては、例えば、上質紙、キャスト紙、アート紙、コート紙、合成紙などを使用することができる。また、記録媒体としては、このような紙に限定するものではなく、例えば、PET(Polyethylene terephthalate)、PP(polypropylene)などから成る長尺のフィルムや布帛などを使用することができる。
記録部210は、前述したように走査方向(X軸方向)に往復移動するシリアルヘッドによる構成となっているが、インクを吐出するノズルを搬送方向と交差する方向に、ロール紙301の幅方向に亘って並べたラインヘッドの構成であっても良い。更に、上記のような所謂インクジェット式の記録ヘッド以外の記録部を有する記録装置であってもよい。
また、搬送部320は、ロール紙301をバックフィードするために、駆動ローラー111を逆に駆動することによって、ロール紙301を搬送方向とは逆の逆搬送方向に移動させることができる。バックフィードは、例えば、記録がされたロール紙301に、更に重ね記録(印刷)する場合や、記録(印刷)のジョブ間における頭出し(記録開始位置の調整)を行う場合、全面に亘って記録が完了したロール紙301を巻出部330に巻き戻す場合などに行われる。
巻出リール331は、制御部360によって駆動制御される巻出モーター(図示省略)により回転して、ロール紙301を巻出部330の下流側に配置される搬送路351、記録部210に向けて巻き出す。
また、巻出部330は、巻出リール331を逆に駆動することによって、バックフィードされるロール紙301を巻き取ることができる。
巻取リール341は、制御部360によって駆動制御される巻取モーター(図示省略)により回転する回転軸を有し、回転軸を軸心として記録部210、搬送路352を経て送られてきたロール紙301を巻き取る。
また、巻取部340は、巻取リール341を逆に駆動することによって、バックフィードされるロール紙301を巻き出すことができる。
回転バー部材353は、搬送路352と巻取部340との間に、ロール紙301の幅方向に亘って延在している。回転バー部材353の回転軸は、記録装置300の本体に固定支持され、回転バー部材353は、回転バー部材353に当接するロール紙301の移動に伴って回転し、ロール紙301の移動を支持する。なお、回転バー部材353は、必ずしも回転軸を有する必要は無く、ロール紙301の幅方向に亘って延在しロール紙301を支持する固定バー部材であっても良い。
本実施形態では、従動ローラー112の所定位置(従動ローラー112の両側のアーム部114の中央位置(図4参照))からの移動の最大許容量である最大許容移動量を具体的に以下のように設定している。
なお、本実施形態においても、図6に示すように、ロール紙301の搬送経路において、プラテン120の前後に搬送ローラー110が設けられている場合で説明する。
巻出部330から巻取部340までのロール紙301の搬送経路の長さをL1、巻出部330からロール紙301が駆動ローラー111と従動ローラー112との間に挟持される位置までのロール紙301の搬送経路の長さをL2a(プラテン120の上流側)およびL2b(プラテン120の下流側)としたとき、プラテン120の上流側の従動ローラー112の所定位置からの最大許容移動量Da、およびプラテン120の下流側の従動ローラー112の所定位置からの最大許容移動量Dbは、それぞれ、以下の式で求められる値としている。
Da≦10mm×L2a/L1
Db≦10mm×L2b/L1
つまり、巻出部330を起点としてセットされたロール紙301が起点から搬送経路に沿って離れるに従い、そのアライメントずれによるブレ量が大きくなり易いことを想定して最大許容移動量を設定している。
ロール状態で供給されるロール紙301を駆動ローラー111と従動ローラー112とで挟持して搬送することができ、また巻き取ることができる。また、従動ローラー112が、ローラー軸方向において所定位置から移動可能に支持されているため、ロール紙301を駆動ローラー111と従動ローラー112とによって挟持したまま搬送を続けた場合であっても、わずかなロール紙301のアライメントずれが累積されることなく、ずれを解消しながら搬送を継続することができる。その結果、ロール紙301にしわを発生させることが抑制される。
実施形態1では、従動ローラー112を所定位置に戻す(移動させる)ために、バネ材115による弾性力を利用して、従動ローラー112が所定位置から移動したときに、所定位置に戻る方向に付勢力が加えられる構成としたが、これに限定するものではない。例えば、駆動ローラー111とで記録媒体1をニップしたときには所定位置方向への付勢が行われず、従動ローラー112がフリーとなった場合に所定位置方向への付勢が行われるような構成にしても良い。
Claims (6)
- ローラー軸方向が互いに平行に配置される駆動ローラーと従動ローラーとを備え、
前記駆動ローラーと前記従動ローラーとの間に記録媒体を挟持した状態で前記駆動ローラーを駆動することにより前記記録媒体を搬送する記録媒体搬送装置であって、
前記従動ローラーが、前記ローラー軸方向において所定位置から移動可能に支持され、
前記従動ローラーが、前記駆動ローラーとの間に記録媒体を挟持せずに前記駆動ローラーから離間しているときに、前記従動ローラーが前記ローラー軸方向において前記所定位置に移動することを特徴とする記録媒体搬送装置。 - 前記従動ローラーが、前記ローラー軸方向において前記所定位置から移動した場合に、前記従動ローラーが、前記所定位置に戻る方向に付勢されることを特徴とする請求項1に記載の記録媒体搬送装置。
- 前記ローラー軸方向における前記従動ローラーの前記所定位置からの移動量が最大許容移動量に達したことを検出する検出部を備えていることを特徴とする請求項1または請求項2に記載の記録媒体搬送装置。
- ロール状態の前記記録媒体を収容し前記記録媒体を巻出す記録媒体巻出部と、
巻出された前記記録媒体を巻き取る記録媒体巻取部と、を備えることを特徴とする請求項1から請求項3のいずれか一項に記載の記録媒体搬送装置。 - 前記最大許容移動量をD、前記記録媒体巻出部から前記記録媒体巻取部までの前記記録媒体の搬送経路の長さをL1、前記記録媒体巻出部から前記記録媒体が前記駆動ローラーと前記従動ローラーとの間に挟持される位置までの前記記録媒体の搬送経路の長さをL2、としたとき、
D≦10mm×L2/L1であることを特徴とする請求項4に記載の記録媒体搬送装置。 - 請求項1から請求項5のいずれか一項に記載の記録媒体搬送装置と、
前記記録媒体に記録を行う記録部と、を備えていることを特徴とする記録装置。
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- 2016-11-14 WO PCT/JP2016/083691 patent/WO2017119193A1/ja active Application Filing
- 2016-11-14 CN CN201680078019.5A patent/CN108778968B/zh active Active
- 2016-11-14 US US16/068,605 patent/US10576762B2/en active Active
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JP2001341897A (ja) * | 2000-06-05 | 2001-12-11 | Noritsu Koki Co Ltd | シート材の搬送装置 |
JP2010168220A (ja) * | 2010-03-17 | 2010-08-05 | Seiko I Infotech Inc | 搬送装置、および記録装置、搬送方法 |
JP2014172745A (ja) * | 2013-03-12 | 2014-09-22 | Ricoh Co Ltd | シート材位置補正装置、及び、画像形成装置 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3608265A1 (en) * | 2018-08-06 | 2020-02-12 | Toshiba Tec Kabushiki Kaisha | Sheet conveying device and image forming apparatus |
JP2020023372A (ja) * | 2018-08-06 | 2020-02-13 | 東芝テック株式会社 | シート搬送装置および画像形成システム |
CN110803548A (zh) * | 2018-08-06 | 2020-02-18 | 东芝泰格有限公司 | 片材输送装置以及图像形成系统 |
JP7178199B2 (ja) | 2018-08-06 | 2022-11-25 | 東芝テック株式会社 | シート搬送装置および画像形成システム |
Also Published As
Publication number | Publication date |
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BR112018013971A2 (ja) | 2018-12-11 |
ES2929976T3 (es) | 2022-12-05 |
CN108778968A (zh) | 2018-11-09 |
EP3401254A1 (en) | 2018-11-14 |
EP3401254B1 (en) | 2022-10-05 |
EP3401254A4 (en) | 2019-10-02 |
CN108778968B (zh) | 2020-10-09 |
US20190016162A1 (en) | 2019-01-17 |
US10576762B2 (en) | 2020-03-03 |
JPWO2017119193A1 (ja) | 2018-10-25 |
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