EP3109053B1 - Liquid discharging apparatus - Google Patents

Liquid discharging apparatus Download PDF

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Publication number
EP3109053B1
EP3109053B1 EP16161707.1A EP16161707A EP3109053B1 EP 3109053 B1 EP3109053 B1 EP 3109053B1 EP 16161707 A EP16161707 A EP 16161707A EP 3109053 B1 EP3109053 B1 EP 3109053B1
Authority
EP
European Patent Office
Prior art keywords
intersecting direction
medium
controller
sensor
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16161707.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3109053A1 (en
Inventor
Kenji Kojima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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Filing date
Publication date
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Publication of EP3109053A1 publication Critical patent/EP3109053A1/en
Application granted granted Critical
Publication of EP3109053B1 publication Critical patent/EP3109053B1/en
Active legal-status Critical Current
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Classifications

    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0095—Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0025—Handling copy materials differing in width
    • B41J11/003—Paper-size detection, i.e. automatic detection of the length and/or width of copy material
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/007—Conveyor belts or like feeding devices
    • 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
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16585—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles for paper-width or non-reciprocating print heads
    • B41J2/16588—Print heads movable towards the cleaning unit
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16505—Caps, spittoons or covers for cleaning or preventing drying out
    • B41J2/16508—Caps, spittoons or covers for cleaning or preventing drying out connected with the printer frame
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16535—Cleaning of print head nozzles using wiping constructions

Definitions

  • the present invention relates to a liquid discharging apparatus.
  • a liquid discharging apparatus which includes a transport section for a medium, and a line head extending in a direction intersecting a direction of transporting the medium.
  • a liquid discharging apparatus in a case in which a position of a transported medium is deviated from an original position where the medium is intended to be transported, an image may not be capable of being formed on a desired position of the medium. Therefore, for example, JP-A-2011-126204 discloses an edge sensor, which is capable of detecting an end portion of a medium in a direction intersecting the direction of transporting the medium, and a recording apparatus (liquid discharging apparatus), which is capable of moving a head unit based on a detection result of the edge sensor.
  • the recording apparatus disclosed in JP-A-2011-126204 is capable of controlling formation of an image on a desired position of the medium.
  • vibration generated at the time of moving the head unit influences discharging of liquid.
  • US 2015/138292 discloses a printing system that includes a media transport system configured to transport a web of print media through a printing zone in a transport direction proceeding from an up-web location to a down-web location.
  • a plurality of printheads each at least partially span the print zone along a transverse direction which is generally orthogonal to the transport direction.
  • a media alignment detection system is positioned down-web from the media print zone and generates a signal indicative of the alignment of the web of print media along the transverse direction.
  • a transverse adjustment mechanism is positioned up-web from the media print zone. The transverse adjustment mechanism is configured to enable the adjustment of the transverse position of the web of print media based upon the signal.
  • An advantage of some aspects of the invention is that a position of liquid discharged by a line head can accurately match a position of a medium arranged without moving the line head.
  • the position of the liquid discharged by the line head can be accurately matched with the position of the medium.
  • Fig. 1 is a schematic side view of the recording apparatus 1 of the embodiment.
  • Fig. 2 is a schematic plan view of the recording apparatus 1 of the embodiment.
  • a part of configuration members are omitted in Fig. 2 .
  • the recording apparatus 1 of the embodiment includes a feeding section 2 which is capable of feeding a roll R1 of a recording medium (medium) P for recording. Also, a transport mechanism 3 is included, which transports the recording medium P in the transport direction A by an adhesive belt 10 (endless belt) supporting the recording medium P on a supporting surface F to which an adhesive is attached. In addition, a recording mechanism 4 is included, which performs recording by discharging ink, which is an example of liquid, onto the recording medium P from nozzles N (refer to Figs. 5A and 5B ) of the line head 19 including the head unit 7 as a discharging section. Moreover, a cleaning mechanism 15 for the adhesive belt 10 is also included. Further, a winding mechanism 18 is included, which includes a winding shaft 17 winding the recording medium P.
  • the feeding section 2 includes a rotating shaft 5, which serves as a setting position of the roll R1 of the recording medium P for recording, and is capable of feeding the recording medium P to the transport mechanism 3 through a driven roller 6 from the roll R1, which is set on the rotating shaft 5.
  • the rotating shaft 5 is rotated in a rotating direction C.
  • the transport mechanism 3 includes an adhesive belt 10 which mounts and transports the recording medium P fed from the feeding section 2, a driving roller 8 which drives the adhesive belt 10 in a direction E, and a driven roller 9.
  • the recording medium P is pressed and attached onto the supporting surface F of the adhesive belt 10 by a pressing roller 12 so as to be mounted on the supporting surface.
  • the driving roller 8 is rotated in the rotating direction C.
  • the endless belt as a transporting belt is not limited to the adhesive belt.
  • an electrostatic chuck endless belt may be used.
  • a configuration in which the recording medium P is supported and transported by a moving support tray, or the like may be adopted, or a configuration in which the recording medium P is transported by a pair of rollers may be adopted.
  • a so-called flatbed type recording apparatus may be used, which performs recording by fixing the recording medium P to a supporting section and moving the line head 19 with respect to the fixed recording medium.
  • the position of the adhesive belt 10 as the transport section of the invention along with the driving roller 8, the driven roller 9, the rotating shaft 5, and the winding shaft 17 is changeable in an intersecting direction B by a controller 34 (refer to Fig. 3 ) while a recording operation (discharging operation of ink) is performed.
  • the recording mechanism 4 includes the line head 19 in which the nozzles N, which discharge liquid in the intersecting direction B intersecting the transport direction A of the recording medium P, are arranged (refer to Figs. 5A and 5B ).
  • the line head 19 includes multiple head units 7 arranged in the intersecting direction B, in each of which the nozzles N are arranged in the intersecting direction B (refer to Figs. 5A and 5B ).
  • the "line head” is a recording head, which is used in the recording apparatus in which a region of the nozzles N formed in the intersecting direction B intersecting the transport direction A of the recording medium P is provided to be capable of covering the entirety in the intersecting direction B of the recording medium P so that an image is formed by relatively moving the recording head or the recording medium P.
  • a region of the nozzles N in the intersecting direction B of the line head 19 may not be capable of covering the entirety in the intersecting direction B of the entirety of the recording medium P supported by the recording apparatus 1.
  • the line head 19 can be moved in the intersecting direction B along guide rails 22 and 23 between a recording position (position illustrated by solid line in Fig. 2 ) and a maintenance position (position illustrated by broken line in Fig. 2 ).
  • a maintenance section 21 corresponding to the maintenance position of the line head 19 is provided, and the maintenance section 21 is capable of performing capping of the head unit 7, suctioning ink from the nozzles N of the head unit 7, and wiping of the head unit 7 by a cap, a suctioning mechanism, a wiper, and the like (not illustrated) in a state in which the line head 19 is in the maintenance position.
  • a meandering detection sensor 16 which is capable of detecting whether or not the recording medium P has meandered is provided at an upstream side of the line head 19 in the transport direction A.
  • the meandering detection sensor 16 of the embodiment is configured so as to be capable of being moved to any position in the intersecting direction B manually by a user.
  • the meandering detection sensor 16 detects whether or not the recording medium P has meandered and been transported according to an absence/presence of the end portion 25 in a detection range of the meandering detection sensor 16 while transporting the recording medium P.
  • a meandering control is capable of being executing by moving the roll R1 of the feeding section 2 in a direction of the rotating shaft 5, for example, based on a detection result using the meandering detection sensor 16.
  • a scan sensor 20 which is capable of reciprocating (reciprocate-scanning) in the intersecting direction B along the guide rail 24 extending in the intersecting direction B, is provided downstream of the line head 19 in the transport direction A.
  • the scan sensor 20 detects the end portion 25 in the intersecting direction B of the recording medium P by performing reciprocate-scanning in the intersecting direction B.
  • the cleaning mechanism 15 for the adhesive belt 10 includes a cleaning brush 13 (refer to Fig. 2 ) in which a plurality of cleaning rollers 13a, 13b, 13c, and 13d are arranged in a rotating shaft direction (intersecting direction B), and a tray 14 containing detergent for cleaning the cleaning brush 13.
  • the cleaning brush 13 of the embodiment is configured to have the cleaning rollers 13a, 13b, 13c, and 13d which are capable of being rotated in the rotating direction C and a reverse direction of the rotating direction C and arranged in the intersecting direction B.
  • the cleaning rollers 13a, 13b, 13c, and 13d are individually moved in a direction D, and the cleaning rollers 13a, 13b, 13c, and 13d can be individually brought into contact with and separated from the adhesive belt 10.
  • the winding mechanism 18 is a mechanism winding the recording medium P on which recording is performed, which is transported from the transport mechanism 3 through the driven roller 11, and is capable of winding as the roll R2 of the recording medium P by setting a paper tube, or the like for winding over the winding shaft 17 and winding the recording medium P.
  • Fig. 3 is a block diagram of the recording apparatus 1 of the embodiment.
  • the controller 34 is provided with a CPU 35 which is in charge of controlling the entirety of the recording apparatus 1.
  • the CPU 35 is connected to a ROM 26 in which various control programs, and the like executed by the CPU 35 are stored, and a RAM 27 which is capable of temporarily storing data, through a system bus 36.
  • the CPU 35 is connected to the head driving section 28 for driving the line head 19, through the system bus 36.
  • the CPU 35 is connected to a motor driving section 29 for driving a scan sensor motor 30, a transport motor 31, a feeding motor 32, a winding motor 33, a cleaning brush rotating motor 39, a cleaning brush moving motor 40, and a transport section moving motor 41, through the system bus 36.
  • the scan sensor motor 30 is a motor for reciprocating the scan sensor 20 in the intersecting direction B.
  • the transport motor 31 is a motor for driving the driving roller 8.
  • the feeding motor 32 is a rotation mechanism of the rotating shaft 5 and is a motor driving the rotating shaft 5 for feeding out the recording medium P to the transport mechanism 3.
  • the winding motor 33 is a driving motor for rotating the winding shaft 17.
  • the cleaning brush rotating motor 39 is a motor for rotating the cleaning brush 13 (cleaning rollers 13a, 13b, 13c, and 13d).
  • the cleaning brush moving motor 40 is a motor which is a driving source for individually moving the cleaning rollers 13a, 13b, 13c, and 13d in the direction D.
  • the transport section moving motor 41 is a motor for moving the adhesive belt 10 along with the driving roller 8, the driven roller 9, the rotating shaft 5, and the winding shaft 17 in the intersecting direction B.
  • the CPU 35 is connected to the input/output section 37 through the system bus 36, and the input/output section 37 is connected to the meandering detection sensor 16, the scan sensor 20, and a PC 38 for receiving and transmitting data such as recording data and signals.
  • the controller 23 controls movement of the scan sensor 20 in the intersecting direction B, and is capable of controlling movement of the adhesive belt 10 in the intersecting direction B based on a detection result of the scan sensor 20.
  • the recording apparatus 1 of the embodiment includes the adhesive belt 10 which is a transport section of the recording medium P and can be moved in the intersecting direction B, the line head 19 in which the nozzles N, which discharge ink in the intersecting direction B intersecting the transport direction A of the recording medium P, are arranged, and a sensor (scan sensor 20) which is capable of detecting the end portion 25 of the recording medium P in the intersecting direction B.
  • controller 34 sets a position of the adhesive belt 10 in the intersecting direction B based on the detection result of the scan sensor 20.
  • the recording apparatus 1 of the embodiment is capable of accurately arranging a discharging position of the ink using the line head 19 with respect to the position of the medium by appropriately setting a position of the adhesive belt 10 in the intersecting direction B.
  • the line head 19 is moved, there is a concern of failure of ink discharging, such as breaking of a meniscus of the ink in the nozzles N, due to vibration of the line head (including vibration of a tube, wire, and the like, supplying ink, in addition to vibration of line head 19 itself).
  • the recording apparatus 1 of the embodiment is capable of accurately arranging the discharging position of the ink without moving the line head 19, therefore, the concern of failure of ink discharging decreases.
  • the scan sensor 20 of the embodiment is a scan sensor which is capable of detecting the end portion of the recording medium P in the intersecting direction B by being moved in the intersecting direction B by the control of the controller 34. Therefore, even when the recording medium P is transported by being deviated greatly from an original position where the medium is intended to be transported, deviation of the medium from a position, where the medium is capable of being detected, can be suppressed.
  • a discharging position of the ink using the line head 19 with respect to the position of the medium can be accurately arranged by appropriately setting a position of the transport section 10 in the intersecting direction B based on the detection result of the scan sensor 20.
  • the scan sensor 20 is a sensor which is capable of detecting the end portion 25 of the recording medium P in the intersecting direction B by being moved in the intersecting direction B when the controller 34 performs controlling.
  • the scan sensor is not limited to such a sensor, and for example, may be a sensor, or the like fixed to the end portion, or the like in the intersecting direction B of the line head 19.
  • Fig. 4 is a view corresponding to Fig. 2 , and is a schematic plan view of the recording apparatus 1 of the embodiment.
  • Fig. 2 illustrates a position of the adhesive belt 10 in a case in which the recording medium P having a long length L1 (refer to Figs. 5A and 5B ) in the intersecting direction B (width thereof is wide) is used
  • Fig. 4 illustrates a position of the adhesive belt 10 in a case in which the recording medium P having a narrow width is used.
  • Figs. 5A and 5B are schematic views illustrating an arrangement of the nozzles N and the head units 7 of the line head 19 in the recording apparatus 1 of the embodiment.
  • Fig. 5A illustrates an arrangement of the head units 7 in the line head 19, and an example of a positional relationship between the line head 19 and the recording medium P in a state of being transported.
  • Fig. 5B is an enlarged view of a part VB of Fig. 5A , and illustrates a positional relationship between the nozzles N of the head unit 7 and the end portion 25 of the recording medium P in a state of being transported.
  • a position of the adhesive belt 10 is set with a side of the line head 19 reverse of the maintenance section 21 in the intersecting direction B as a reference based on a detection result of the end portion 25 of the recording medium P using the scan sensor 20.
  • the controller 34 controls the recording operation (discharging operation of ink)
  • the position of the adhesive belt is set along with the driving roller 8, the driven roller 9, the rotating shaft 5, and the winding shaft 17.
  • a position of the head units 7 at an end portion of the line head 19 reverse of the maintenance section 21 in the intersecting direction B is set so as to correspond to a position of the end portion 25 of the recording medium P.
  • a position of the head units 7 at the end portion of the line head 19 reverse of the maintenance section 21 in the intersecting direction B is set to correspond to a position of the end portion 25 of the recording medium P, and the position of the head units 7 becomes a state illustrated in Fig. 5B (a position of the end portion of the head units 7 in the intersecting direction B does not correspond to a position of the end portion 25 of the recording medium P), at the maintenance section 21 side of the line head 19 in the intersecting direction B.
  • the controller 34 of the embodiment is capable of selecting nozzles N1 to be used in the nozzles N. Specifically, based on the detection result of the scan sensor 20, the controller 34 determines where the end portion 25 is positioned in the line head 19 in the intersecting direction B.
  • the controller 34 sets the nozzles N in a position facing the recording medium P at an arrow R1 side further than the end portion 25 to nozzles N1 to be used, and sets the nozzles N in a position not facing the recording medium P at an arrow R2 side further than the end portion 25 to nozzles N2 not to be used. Accordingly, by selecting such a control method, that is, selecting the nozzles N1 to be used from the nozzles N, the recording apparatus 1 of the embodiment is capable of accurately and simply arranging a discharging position of the ink using the line head 19 with respect to the position of the medium.
  • a control method in which the controller 34 is used to select the nozzles N1 to be used from the nozzles N a control method in which the controller 34 is used to select head units to be used from a plurality of the head units 7 may be used.
  • the position of the head units 7 at the end portion of the line head 19 reverse of the maintenance section 21 in the intersecting direction B is set to correspond to a position of the end portion 25 of the recording medium P.
  • the position of the head units 7 at the end portion of the line head 19 at the maintenance section 21 side in the intersecting direction B may be set to correspond to a position of the end portion 25 of the recording medium P.
  • the controller 34 of the embodiment is capable of outputting an error, in a case in which a length in the intersecting direction B of the recording medium P based on recording data (ink discharging data) is different from the length L1 (refer to Fig. 5A ) in the intersecting direction B of the recording medium P based on the detection result of the scan sensor 20.
  • the recording apparatus 1 of the embodiment is capable of suppressing recording on the recording medium P different from the recording medium P which is assumed.
  • the controller 34 of the embodiment is capable of outputting an error to the PC 38 serving as an alarm section. Accordingly, in a case in which the discharging width is longer than the length L1, it is possible to urge the user to modify the recording data so as to reduce the discharging width, or to change the recording medium into the recording medium P having a wide width. Accordingly, the recording apparatus 1 of the embodiment is capable of suppressing the fact that an image formed using the ink discharged from the line head 19 does not fit onto the recording medium P.
  • the controller 34 of the embodiment is capable of adjusting the position of the adhesive belt 10 in the intersecting direction B based on the detection result. Specifically, for example, the adhesive belt 10 is moved (adjusted) at a degree of 10 ⁇ m in the intersecting direction B while transporting the recording medium P by 100 mm, and thus the recording operation can be performed.
  • the recording apparatus 1 of the embodiment is capable of accurately and efficiently arranging the discharging position of the liquid using the line head 19 with respect to the position of the medium by adjusting the position of the adhesive belt 10 in real time based on the detection result of the scan sensor 20.
  • the controller 34 of the embodiment is capable of recognizing the position of the end portion 25 based on the detection result detected before the recording operation, without detecting the end portion 25 in real time at the time of the recording operation. However, in such a case described above, the position of the adhesive belt 10 at the time of the recording operation is not adjusted.
  • the controller 34 of the embodiment is capable of changing the position of the adhesive belt 10 in the intersecting direction B in a case in which a deviation of the position of the end portion 25 of the recording medium P based on the detection result of the scan sensor 20 at the time of the recording operation (ink discharging operation) is less than a threshold stored in advance in the ROM 26, and is capable of controlling a change of the nozzles N1 to be used among the nozzles N by a method which is the same as the method described above with reference to Fig. 5B in a case in which the deviation is equal to or more than the threshold.
  • a control method in which the nozzles N1 to be used are selected from the nozzles N a control method in which the head units to be used are selected from the plurality of head units 7 may be used.
  • the recording apparatus 1 of the embodiment has a configuration in which one end side (left side in Fig. 2 ) in the intersecting direction B becomes a reference position for arranging the position in the intersecting direction B of the recording medium P.
  • the controller 34 is capable of setting a movement range in the intersecting direction B of the scan sensor 20, according to a length in the intersecting direction B of the recording medium P based on the recording data (ink discharging data). Accordingly, the recording apparatus 1 of the embodiment is capable of suppressing a movement in which the scan sensor 20 is moved to an unnecessary range (a range where the recording medium P is not present) according to the length in the intersecting direction B of the recording medium P based on the recording data.
  • the recording apparatus 1 of the embodiment includes the meandering detection sensor 16.
  • the meandering detection sensor 16 of the embodiment is capable of detecting whether or not the recording medium P has meandered and been transported by detecting the end portion 25 at the predetermined position.
  • the controller 34 is capable of setting a movement range in the intersecting direction B of the scan sensor 20, based on a position of the meandering detection sensor 16 which is disposed by the user. Specifically, the controller 34 is capable of setting a movement range in the intersecting direction B of the scan sensor 20, so as not to include a range of the outside in the intersecting direction B further than the position of the meandering detection sensor 16 where the recording medium P does not exist. Accordingly, the recording apparatus 1 of the embodiment is capable of suppressing the fact that the scan sensor 20 is moved to an unnecessary range, based on the position of the meandering detection sensor 16.
  • the scan sensor 20 of the embodiment is disposed at an upstream side further than the line head 19 in the transport direction A. Accordingly, the recording apparatus 1 of the embodiment is capable of detecting a position of the recording medium P before the ink is discharged from the line head 19.
  • the adhesive belt 10 which is the transport section of the embodiment, is a transporting belt which transports the recording medium P while being attached thereto.
  • the scan sensor 20 is provided at a plurality of positions, such as at an upstream side and at a downstream side further than the line head 19.
  • the recording apparatus 1 of the embodiment includes the transporting belt which transports the recording medium P while being attached thereto, and thus the recording apparatus is capable of sufficiently and accurately detecting the transporting deviation of the recording medium P from the original position where the medium is intended to be transported with only one scan sensor 20.
  • the recording apparatus 1 of the embodiment includes the cleaning brush 13 as a cleaning section for the adhesive belt 10.
  • the cleaning brush 13 changes a cleaning region of the adhesive belt 10 in the intersecting direction B.
  • the controller 34 of the embodiment is capable of setting the cleaning region based on the detection result of the scan sensor 20. Specifically, based on the detection result of the scan sensor 20, the controller determines a region (a region for which there is concern of being contaminated due to the ink), where the ink is discharged, on the supporting surface F of the adhesive belt 10, and is capable of setting cleaning regions (selecting the cleaning rollers to be in contact with the adhesive belt 10 among the cleaning rollers 13a, 13b, 13c, and 13d) based on the determined result.
  • the controller 34 allows the cleaning rollers, which are disposed at a position including a region in the inside further than the end portion 25 in the intersecting direction B, to be in contact with the adhesive belt 10, and allows the cleaning rollers, which are not disposed at a position including a region in the inside further than the end portion 25 in the intersecting direction B, not to be in contact with the adhesive belt 10.
  • the transporting position of the recording medium P with respect to the adhesive belt 10 and the cleaning brush 13 is in the positional relationship illustrated in Fig.
  • the cleaning rollers 13a, 13b, and 13c correspond to the cleaning rollers disposed at a position including a region of the inside further than the end portion 25, and the cleaning roller 13d corresponds to the cleaning roller not disposed at a position including a region of the inside further than the end portion 25, the cleaning rollers 13a, 13b, and 13c are in contact with the adhesive belt 10 and the cleaning rollers 13d are not in contact with the adhesive belt 10.
  • the recording apparatus 1 of the embodiment is capable of suppressing inefficiency of cleaning unnecessary regions (region not contaminated with ink) on the adhesive belt 10.
  • the controller 34 of the embodiment is capable of setting a position of the transporting belt 10 in the intersecting direction B so as to be any one of a plurality of positions, in a case in which the length L1 in the intersecting direction B of the recording medium P is shorter than a length, where the nozzles N in the intersecting direction B are arranged, based on the detection result of the scan sensor 20.
  • the position of the transporting belt 10 with respect to the recording medium P can be set based on one end side (left side in Fig. 2 ) in the intersecting direction B of the line head 19 as a reference, and the position of the transporting belt 10 with respect to the recording medium P can be set with a positional relationship different from such a positional relationship.
  • the controller 34 of the embodiment is capable of setting the position of the transporting belt 10 in the intersecting direction B according to a frequency of using the nozzles N.
  • the position of the transporting belt 10 in the intersecting direction B can be set so that a deviation of a use frequency of each of the nozzles N of the line head 19 decreases, for example, so that an arrangement with respect to the recording medium P of the line head 19 is changed each time recording is performed. Accordingly, rapid deterioration of the line head 19 due to the use deviation of each of the nozzles N in the line head 19 can be suppressed.
  • the controller 34 of the embodiment is capable of setting the position of the transporting belt 10 in the intersecting direction B to a position where the nozzles N of the end portion side of the line head 19 in the intersecting direction B do not face the recording medium P.
  • Instability of discharging is more easily generated on the nozzles N at the end portion at of the line head 19, than the nozzles N at the center portion of the line head 19.
  • the recording apparatus 1 of the embodiment is configured to be capable of moving the driving roller 8, the driven roller 9, the rotating shaft 5, and the winding shaft 17 along with the adhesive belt 10, which is the transport section, in the intersecting direction B; however, the apparatus is not limited to such a configuration.
  • the apparatus may be configured to be capable of moving some components among the above described components, along with the adhesive belt 10, which is the transport section, and further, for example, may be configured to be capable of also moving configuration members, such as the cleaning mechanism 15, other than above described components along with the adhesive belt 10.
  • the invention is not limited to the embodiment described above, and can be variously changed within a range of the invention disclosed in Claims, further, it is needless to say that resultants thereof are also included in the range of the invention.
  • the scan sensor 20 is stopped at the position of the end portion, and the recording medium P can be detected at the position where the sensor is stopped.
  • the recording medium P is determined to be meandered, and thus a predetermined meandering control can be performed or an error can be detected.
  • the meandering control can be performed with high accuracy, and the meandering control can be simply performed even when the meandering detection sensor 16 is not provided as described in the above embodiment.
  • the liquid discharging apparatus 1 of the invention includes the transport section 10 for the medium P, the line head 19 in which the nozzles N discharging liquid in the intersecting direction B that intersects the transport direction A of the medium P are arrayed, the sensor 20 capable of detecting the end portion 25 of the medium P in the intersecting direction B, and the controller 34 controlling discharging of the liquid.
  • the transport section 10 can be moved in the intersecting direction B, and the controller 34 is capable of setting the position of the transport section 10 in the intersecting direction B based on the detection result of the sensor 20.
  • the controller is capable of setting the position of the transport section in the intersecting direction to a position where the nozzles of an end portion side of the line head in the intersecting direction do not face the medium.
  • the transport section 10, which can be moved in the intersecting direction B, is provided, and the position of the transport section 10 in the intersecting direction B is set, based on the detection result of the sensor 20, which is capable of detecting the end portion 25 of the medium P in the intersecting direction B. Accordingly, when the position of the transport section 10 in the intersecting direction B is appropriately set based on the detection result of the sensor 20, the discharging position of the liquid with respect to the position of the medium using the line head 19 can be accurately arranged.
  • the position of the transport section 10 is set to a position where the nozzles N at the end portion of the line head 19 in the intersecting direction B do not face the medium P, and thus the liquid can be discharged using only the nozzles N in the center portion.Therefore, deterioration of the discharging quality of the liquid can be suppressed.
  • the scan sensor 20 is included, which is capable of detecting the end portion 25 of the medium P in the intersecting direction B by being moved in the intersecting direction B with control of the controller 34. Accordingly, even when the medium P is transported so as to be greatly deviated from the original position where the medium is intended to be transported, it is capable of suppressing deviation from a position capable of being detected. Therefore, even when the medium P is transported and greatly deviated from the original position where the medium is intended to be transported, the position of the transport section 10 in the intersecting direction B is appropriately set based on the detection result of the scan sensor 20, and thus the discharging position of the liquid with respect to the position of the medium by using the line head 19 can be accurately arranged.
  • the controller 34 changes the position of the transport section 10 based on the detection result. Accordingly, at the time of the discharging operation of the liquid, when the position of the transport section 10 is adjusted in real time based on the detection result of the scan sensor 20, efficiently, the discharging position of the liquid with respect to the position of the medium using the line head 19 can be accurately arranged.
  • one end side in the intersecting direction B is a reference position for matching the position in the intersecting direction B of the medium P
  • the controller 34 sets the movement range in the intersecting direction B of the scan sensor 20 corresponding to the length in the intersecting direction B of the medium P based on the discharging data of the liquid. Accordingly, corresponding to the length in the intersecting direction B of the medium P based on the discharging data of the liquid, movement of the scan sensor 20 to an unnecessary range can be suppressed.
  • a meandering detection sensor 16 is included, and the controller 34 sets the movement range in the intersecting direction B of the scan sensor 20 based on the position of the meandering detection sensor 16. Accordingly, a movement of the scan sensor 20 to an unnecessary range from the position of the meandering detection sensor 16 can be suppressed.
  • the scan sensor 20 is disposed at an upstream side further than the line head 19 in the transport direction A. Accordingly, the position of the medium P can be detected before discharging the liquid.
  • the transport section 10 is a transporting belt which transports the medium P while being attached thereto.
  • the transporting belt transporting the medium P while being attached thereto, once the medium P is attached thereto (medium P is supported), the deviation of the medium P from the transporting belt can be suppressed, and thus the deviation of the medium P can be further suppressed, after detecting the transporting deviation of the medium P from the original position where the medium is intended to be transported. Accordingly, with only one sensor 20, the transporting deviation of the medium P from the original position where the medium is intended to be transported can be detected with high accuracy.
  • a cleaning section 13 which changes the cleaning region of the transporting belt in the intersecting direction B is included, and the controller 34 sets the cleaning region based on the detection result of the sensor 20. That is, the discharging region of the liquid is determined based on the detection result of the sensor 20, and the cleaning region can be set based on such a determined result. Accordingly, inefficiency of cleaning an unnecessary region of the transporting belt can be suppressed.
  • the controller 34 outputs an error in a case in which a length in the intersecting direction B of the medium P based on the discharging data of the liquid is different from the length L1 in the intersecting direction B of the medium P based on the detection result of the scan sensor 20. Accordingly, in a case in which the width in the intersecting direction B of the medium P which is input to the controller 34 is different from the length L1, that is, a case in which the medium P being assumed is different from the medium P set in the liquid discharging apparatus 1, the user is urged to change the medium to an appropriate medium P, or the like. Therefore, discharging of the liquid onto the medium P which is different from the medium P being assumed can be suppressed.
  • the controller 34 calculates the discharging width in the intersecting direction B based on the discharging data of the liquid and, in a case in which the calculated discharging width is longer than the length L1 in the intersecting direction B of the medium P based on the detection result of the sensor 20, the controller outputs an error. Accordingly, it is possible to suppress that an image formed by the liquid is formed outside of the medium P.
  • the controller 34 is capable of setting the position of the transport section 10 in the intersecting direction B to any one of a plurality of positions, in a case in which the length L1 in the intersecting direction B of the medium P based on the detection result of the scan sensor 20 is shorter than the length of which the nozzles N in the intersecting direction B are arrayed. Accordingly, for example, even when a defect is generated in the nozzles N of one end side in the intersecting direction B of the line head 19, deterioration of quality of discharging of the liquid can be suppressed by disposing the transporting belt 10 at a position where those nozzles N do not face the medium P.
  • the controller 34 is capable of setting the position of the transport section 10 in the intersecting direction B in accordance with a use frequency of the nozzles N. Accordingly, a deviation of the use frequency between the nozzles N of the line head 19 can be reduced, and thus rapid deterioration of the line head 19 according to deviation of the use frequency of each of the nozzles N of the line head 19 can be suppressed.

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  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
EP16161707.1A 2015-05-28 2016-03-22 Liquid discharging apparatus Active EP3109053B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015108565A JP6528946B2 (ja) 2015-05-28 2015-05-28 液体吐出装置

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EP3109053A1 EP3109053A1 (en) 2016-12-28
EP3109053B1 true EP3109053B1 (en) 2019-09-04

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CN112455095A (zh) * 2020-12-01 2021-03-09 浙江省邮电印刷股份有限公司 一种间歇式多色喷墨印刷机

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JP2005096135A (ja) * 2003-09-22 2005-04-14 Fuji Photo Film Co Ltd 記録媒体の搬送装置および画像形成装置
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EP3109053A1 (en) 2016-12-28
JP6528946B2 (ja) 2019-06-12
CN106183409B (zh) 2018-03-27
JP2016221754A (ja) 2016-12-28
CN106183409A (zh) 2016-12-07

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