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WO2019163298A1 - Appareil et procédé d'impression - Google Patents

Appareil et procédé d'impression Download PDF

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Publication number
WO2019163298A1
WO2019163298A1 PCT/JP2018/048516 JP2018048516W WO2019163298A1 WO 2019163298 A1 WO2019163298 A1 WO 2019163298A1 JP 2018048516 W JP2018048516 W JP 2018048516W WO 2019163298 A1 WO2019163298 A1 WO 2019163298A1
Authority
WO
WIPO (PCT)
Prior art keywords
printing
print
print object
section
head
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.)
Ceased
Application number
PCT/JP2018/048516
Other languages
English (en)
Japanese (ja)
Inventor
隆吾 佐藤
庵 圖師
康之 前田
聡 植原
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.)
Hitachi High Tech Corp
Original Assignee
Hitachi High Tech Fine Systems Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi High Tech Fine Systems Corp filed Critical Hitachi High Tech Fine Systems Corp
Publication of WO2019163298A1 publication Critical patent/WO2019163298A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • B41J11/02—Platens
    • B41J11/06—Flat page-size platens or smaller flat platens having a greater size than line-size platens
    • 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
    • B41J11/36—Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
    • B41J11/42—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering
    • 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

Definitions

  • the present invention prints an image on a part of a print section of a print object (media) extending in a belt shape by using an inkjet head that discharges UV curable ink that is cured by being irradiated with ultraviolet rays (UV).
  • the present invention relates to a printing apparatus and a printing method.
  • the printing object includes a thin film resin film and the like.
  • the “printing section” refers to a range in the longitudinal direction of an object to be printed that can be printed by a series of scans by an inkjet head of a printing apparatus.
  • Inkjet printers using inkjet heads enable high-quality printing and are widely used in various fields.
  • sheet-fed printing that handles a sheet-like printing object is capable of quality-oriented printing due to its configuration, and is suitable for the production of a small variety of products.
  • industrial applications there is a great demand for printing on roll films, roll papers, and the like that can be mass-produced. In this field, improvement in print quality is desired.
  • Patent Document 1 discloses a work stage that sucks and holds a recording area of a long work (the “printing section” of the present invention) and a work holding means that holds a part of the work immovably. In addition to removing the recorded recording area from the work stage and feeding the unrecorded recording area to the work stage, the recording area of the long workpiece is accurately removed.
  • a recording apparatus is disclosed.
  • Patent Document 2 is provided with sucking holes for sucking a work, and increasing the number of suction holes per fixed area in a portion along two opposite sides of the stage.
  • An adsorption device that ensures the flatness of a workpiece is disclosed.
  • UV curable ink When printing using UV curable ink, UV light that generates ultraviolet light is moved with a print head equipped with an inkjet head that discharges UV curable ink, and the ultraviolet light generated from UV light is printed immediately after printing.
  • the UV curable ink When UV curable ink is cured immediately after printing by irradiating the object, the UV curable ink has fluidity before curing compared to the case where the UV light is disposed at the subsequent stage of the print head in the longitudinal direction of the printing object. The diffusion on the print object is reduced, and the print quality is improved. Further, as the print head is arranged closer to the surface of the printing object, the spread of the UV curable ink ejected from the inkjet head becomes smaller, and an improvement in print quality can be expected. However, if the print head is arranged at a position close to the surface of the print object, the print object may come into contact with the print head when the print object is lifted from the table due to thermal expansion.
  • An object of the present invention is to perform high-quality printing by suppressing lifting of a printing object from a table due to irradiation of ultraviolet rays when printing an image on a printing object extending in a strip shape using UV curable ink. That is.
  • a printing apparatus includes a table that supports the back surface of a part of a printing section of a print object that extends in a strip shape, and a print head that includes an inkjet head that discharges UV curable ink that is cured by irradiation with ultraviolet rays.
  • a UV light source that generates ultraviolet light
  • a first moving mechanism that moves the table in the longitudinal direction of the print object, and the print head and UV light source while the print head is kept at a predetermined distance from the surface of the table.
  • the second moving mechanism that moves in the width direction, the print head, the first moving mechanism, and the second moving mechanism are controlled, and an image is printed on the print section of the print object supported by the table by the print head.
  • a control device that cures the UV curable ink by irradiating the printing object with ultraviolet rays generated from a UV light source while the table is being printed, and the table adsorbs the printing object
  • There are a number of suction holes and the distance between each suction hole is determined by the gap between the surface of the print object before the lift and the print head. It is characterized by a length that decreases.
  • the back surface of a part of the printing object extending in a strip shape is supported by a table having a plurality of suction holes, and the first moving mechanism is used to support the table in the longitudinal direction of the printing object.
  • the print head mounted with the inkjet head that discharges the UV curable ink that is cured by being irradiated with ultraviolet rays by the second moving mechanism is maintained at a predetermined distance from the surface of the table.
  • the UV light source that generates UV light is moved in the width direction of the object to be printed, and the UV light generated from the UV light source is printed while the image is printed on the print section of the object to be printed supported by the table.
  • the printing amount supported by the table while adsorbing the printing object with a plurality of suction holes is set so that the amount of lifting is smaller than the gap between the surface of the printing object before the lifting and the print head. An image is printed on the section.
  • the back surface of a part of the print section of the print object extending in a band shape is supported by a table having a plurality of suction holes, and the table is moved in the longitudinal direction of the print object by the first movement mechanism, and the second movement
  • the print head and UV light source that generates ultraviolet rays are printed while the print head equipped with an inkjet head that discharges UV curable ink that is cured by irradiation with ultraviolet rays is maintained at a predetermined distance from the surface of the table.
  • the UV curable type is irradiated with ultraviolet rays generated from a UV light source while moving in the width direction of the object and printing an image on the print section of the object to be printed supported by the table by the print head.
  • the UV curable ink Since the ink is cured, the UV curable ink has a fluidity before curing as compared with the case where the UV light source is disposed at the rear stage of the print head in the longitudinal direction of the printing object. Diffusion is decreased on the printing object, the print quality is improved.
  • the distance between the suction holes of the table is such that the amount of lifting of the printing object from the table by irradiation of ultraviolet rays generated from the UV light source is smaller than the gap between the surface of the printing object and the print head before lifting. Therefore, it is possible to reduce the spread of the UV curable ink discharged from the inkjet head by arranging the print head near the surface of the printing object. Therefore, when an image is printed on a print object extending in a strip shape using UV curable ink, lifting of the print object from the table due to irradiation of ultraviolet rays is suppressed, and high-quality printing is performed.
  • the printing apparatus is configured such that the table has a plurality of suction holes in the width direction of the print object around the edge of the print object supported by the table at a shorter interval than the center of the print object. It is characterized by having. Further, in the printing method of the present invention, in the width direction of the printing object, a plurality of suction holes are provided around the edge of the printing object supported by the table at intervals shorter than the central part of the printing object. It is characterized by. In the width direction of the print object, a plurality of suction holes are provided around the edge of the print object supported by the table at intervals shorter than the center part of the print object. The amount of lifting of the print object is further reduced in the vicinity of the end of the print object that is likely to come into contact with the print head that is moved to the position.
  • the table has a plurality of suction holes in the longitudinal direction of the print object on the inside of the print section of the print object supported by the table and on the outside of the print section of the print object. It is characterized by having each. Further, in the printing method of the present invention, in the longitudinal direction of the printing object, a plurality of suction holes are respectively provided inside the printing section of the printing object supported by the table and outside the printing section of the printing object. It is characterized by. In the longitudinal direction of the printing object, a plurality of suction holes are provided outside the printing area of the printing object supported by the table.
  • the printing apparatus of the present invention is characterized in that the diameter of each suction hole of the table is such that the amount of deformation of the print object due to the suction becomes a predetermined value or less according to the suction pressure.
  • the printing method of the present invention is characterized in that the diameter of each suction hole of the table is set to a size such that the amount of deformation of the print object due to the suction is a predetermined value or less according to the suction pressure. If the print object is thin, the print object may be deformed and dented due to adsorption by the suction holes.
  • the diameter of each suction hole of the table is set to a size that causes the deformation amount of the print object due to suction to be a predetermined value or less according to the suction pressure, so that deformation of the print object due to suction is suppressed, and higher quality printing is performed. Is done.
  • the printing object by providing a plurality of suction holes around the edge of the printing object supported by the table at intervals shorter than the central part of the printing object, in particular, the printing object.
  • the amount of lifting of the printing object can be further reduced around the edge of the printing object that is likely to come into contact with the print head moved in the width direction.
  • a plurality of suction holes are provided outside the printing area of the printing object supported by the table, so that the area outside the printing area of the printing object is not printed. Even if the heat of the ultraviolet light irradiated from the UV light source is conducted, it is possible to suppress the elongation of the print object at that portion, and to wrinkle the portion not supported by the table of the print object following that portion. And the like can be prevented.
  • FIG. 1A and 1B are diagrams illustrating a schematic configuration of a printing apparatus according to an embodiment of the present invention, in which FIG. 1A is a top view and FIG. 1B is a side view. It is the front view which looked at the movement stage and the gate from the collection reel side.
  • FIG. 3A is a top view of the table
  • FIG. 3B is a cross-sectional view taken along the line AA of the table of FIG. It is a figure explaining the amount of lifting of a printing subject.
  • 1 is a block diagram of a detection device and a control device of a printing apparatus according to an embodiment of the present invention.
  • 4 is a flowchart illustrating an operation of the printing apparatus according to the embodiment of the present invention. It is a figure explaining printing operation of one printing section.
  • the printing object 1 is made of a resin film such as PBT (polybutylene terephthalate) or PET (polyethylene terephthalate).
  • PBT polybutylene terephthalate
  • PET polyethylene terephthalate
  • FIG. 1A and 1B are diagrams illustrating a schematic configuration of a printing apparatus according to an embodiment of the present invention, in which FIG. 1A is a top view and FIG. 1B is a side view.
  • the printing apparatus 100 includes a print head 10, a base 11, a gate 12, a guide 13, a moving stage 14, a ⁇ stage 15, a table 16, a first moving mechanism, a second moving mechanism, a UV light 20, A supply reel 21, dancer rollers 22 and 25, guide rollers 23 and 24, a recovery reel 26, an upper roller 27, and a detection device 30 and a control device 40 described later are configured.
  • a supply reel 21 is used as a supply mechanism for supplying the printing object 1 before printing.
  • the supply mechanism of the printing object 1 is not limited to a reel, and any mechanism that supports the printing object 1 wound in a roll shape so as to be rotatable can be used.
  • the collection reel 26 is used as a collection mechanism for collecting the printed object 1 after printing.
  • the collection mechanism for the print target 1 is not limited to a reel, and any mechanism that can store the print target 1 in a space-saving manner may be used.
  • a drive motor (not shown) is attached to the supply reel 21 and the recovery reel 26.
  • the print target 1 extending in a belt shape is fed out from the supply reel 21, and is wound around the collection reel 26 via the dancer roller 22, the guide rollers 23 and 24, and the dancer roller 25.
  • the width direction of the print object 1 is the X direction
  • the longitudinal direction of the print object 1 is the Y direction.
  • the supply reel 21 may be configured to rotate according to the movement of the print target 1 without attaching a driving motor.
  • the dancer roller 22 and the dancer roller 25 are configured to be movable up and down, and are urged downward in the drawing of FIG. Thereby, tension is applied to the printing object 1 in the longitudinal direction, and unnecessary positional deviation of the printing object 1 is suppressed.
  • the printing head 10 is equipped with a plurality of inkjet heads.
  • an inkjet head for each color of cyan (C), magenta (M), yellow (Y), and black (K) is mounted, or a plurality of sets of inkjet heads for each color are installed. It is installed.
  • Each inkjet head discharges a UV curable ink that is cured by being irradiated with ultraviolet rays.
  • a guide 13 is installed on the upper surface of the base 11, and a moving stage 14 is mounted on the guide 13.
  • the moving stage 14 moves in the Y direction along the guide 13.
  • a ⁇ stage 15 is mounted on the moving stage 14, and a table 16 is mounted on the ⁇ stage 15.
  • the ⁇ stage 15 rotates the table 16 in the ⁇ direction.
  • the table 16 supports the back surface of a part of the printing section of the printing object 1 extending in a strip shape.
  • the surface of the table 16 is provided with suction holes to be described later, and the table 16 vacuum-sucks the back surface of the printing section of the print object 1 with the suction holes during printing, so that the print object 1 is placed on the table 16. To fix.
  • FIG. 1A a gate 12 is provided above the table 16 over a length equal to or greater than the width of the print target 1.
  • FIG. 2 is a front view of the moving stage and the gate as viewed from the collection reel side.
  • the first moving mechanism that moves the table 16 in the longitudinal direction of the printing object 1 is constituted by a linear motor, and the linear motor of the first moving mechanism has a built-in magnet. It consists of a plate-like stator 17a and a plate-like mover 17b with a built-in coil.
  • the stator 17 a extends in the depth direction of FIG. 2 and is embedded in the upper surface of the base 11.
  • the mover 17 b is attached to the lower surface of the moving stage 14.
  • the stator 17a and the mover 17b are installed so as not to contact each other with a slight gap.
  • a current is passed through the coil of the mover 17b, the framing is determined from the coil current and the magnetic field of the magnet of the stator 17a.
  • a propulsive force acts on the mover 17b, and the moving stage 14 is moved in the drawing front direction or the drawing depth direction in FIG.
  • the second moving mechanism for moving the print head 10 in the width direction of the print object 1 is constituted by a linear motion motor 18.
  • the linear motor 18 is attached to the side surface of the gate 12.
  • a guide in the X direction, a stator made of a magnet, and a mover made of a coil are housed.
  • the operating principle of the linear motion motor 18 is the same as that of the linear motion motor of the first moving mechanism, and the print head 10 is moved in the X direction by the linear motion motor 18.
  • the distance between the surface of the table 16 and the print head 10 is kept constant, and the second moving mechanism keeps the print head 10 at a predetermined distance from the surface of the table 16 while keeping the print head 10 at a predetermined distance. Move in the width direction of 1.
  • the camera unit 31 which comprises the detection apparatus 30 mentioned later is attached to one side surface of the print head 10.
  • the camera unit 31 includes a light source 32, a lens 33, and a camera 34.
  • the illumination light generated from the light source 32 is reflected by the half mirror in the lens 33 and is irradiated onto the surface of the printing object 1 supported by the table 16.
  • the camera 34 has a two-dimensional image sensor such as a CCD, acquires a mark image of a positioning mark 3 to be described later via a lens 33, and outputs an image signal.
  • a UV light 20 that generates ultraviolet rays is attached to the other side surface of the print head 10.
  • the UV light 20 is composed of an ultraviolet lamp, a light emitting diode (LED), or the like, and irradiates the surface of the printing object 1 supported by the table 16 with ultraviolet rays, so that the surface of the printing object 1 from each inkjet head of the printing head 10.
  • the UV curable ink discharged to is cured.
  • FIG. 3A is a top view of the table
  • FIG. 3B is a cross-sectional view taken along the line AA of the table of FIG. 3A
  • the table 16 has a support base 16a that supports the back surface of a part of the printing section of the printing object 1, and a plurality of suction holes 6 are provided on the surface of the support base 16a.
  • the decompression space 7 is formed inside the table 16, and each suction hole 6 penetrates the support base 16 a from the surface of the support base 16 a to the decompression space 7. Communicates.
  • each suction hole 6 vacuum-sucks the back surface of the printing object 1 supported by the support base 16 a.
  • the suction force of each suction hole 6 is larger than the force that expands when the printing object 1 is thermally expanded by irradiation with ultraviolet rays generated from the UV light 20.
  • each suction hole 6 has an interval (pitch) Ps at the center of the printing object 1 supported by the table 16 in the width direction of the printing object 1, and the end of the printing object 1. In the periphery, it is formed on the support 16a with a spacing Pn. Further, in the longitudinal direction of the printing object 1, the intervals between the suction holes 6 are all Ps. The intervals Ps and Pn between the suction holes 6 are such that the amount of lifting of the printing object 1 from the table 16 due to the irradiation of ultraviolet rays generated from the UV light 20 is the surface of the printing object 1 before the lifting and the print head 10. The length is smaller than the gap.
  • FIG. 4 is a diagram for explaining the amount of lifting of the print object.
  • FIG. 4A shows a state in which the printing object 1 is lifted from the table 16 due to thermal expansion due to irradiation of ultraviolet rays generated from the UV light 20.
  • the interval between the suction holes 6 is Ps
  • the linear expansion coefficient of the print object 1 is ⁇
  • the rising temperature of the print object 1 due to the irradiation of ultraviolet rays generated from the UV light 20 is ⁇ T.
  • the elongation amount ⁇ Ps due to thermal expansion of the printing object 1 is expressed by the equation (1).
  • a right triangle DEF is hypothesized as shown in FIG. 4B with respect to the surface of the printed object 1 lifted by a broken line.
  • the intervals Ps and Pn between the respective suction holes 6 are made as long as possible in a range where the amount of lifting ⁇ of the printing object 1 is smaller than the gap H between the surface of the printing object 1 and the printing head 10 before lifting. Since the number of the suction holes 6 is small, the printing object 1 can be fixed efficiently. Further, as the distances Ps and Pn between the suction holes 6 are shortened, the floating amount ⁇ of the print object 1 is reduced, and the print quality is improved.
  • the back surface of a part of the printing section of the printing object 1 extending in a band shape is supported by a table 16 having a plurality of suction holes 6, and the table 16 is moved in the longitudinal direction of the printing object 1 by the first moving mechanism.
  • the print head 10 and the ultraviolet rays are held while the print head 10 mounted with the inkjet head for discharging the UV curable ink that is cured by being irradiated with ultraviolet rays by the second moving mechanism is kept at a predetermined distance from the surface of the table 16.
  • the UV light 20 is generated in the width direction of the print object 1 and is generated from the UV light 20 while the print head 10 prints an image on the print section of the print object 1 supported by the table 16.
  • the downstream of the print head 10 in the longitudinal direction of the print object 1 is used. Compared with the case of arranging, diffusion on the printing object 1 UV curable ink having fluidity before curing becomes small, the printing quality is improved.
  • the distance Ps and Pn between the suction holes 6 of the table 16 is set so that the amount of lifting of the printing object 1 from the table 16 due to the irradiation of ultraviolet rays generated from the UV light 20 is the same as the surface of the printing object 1 before lifting.
  • the spread of the UV curable ink ejected from the inkjet head can be reduced by disposing the print head 10 near the surface of the printing object 1. Become. Therefore, when an image is printed on the print object 1 extending in a strip shape using the UV curable ink, lifting of the print object 1 from the table 16 due to irradiation of ultraviolet rays is suppressed, and high-quality printing is performed.
  • the interval Pn between the suction holes 6 around the edge of the print object 1 supported by the table 16 is shorter than the interval Ps between the suction holes 6 at the center of the printing object 1.
  • the amount of lifting of the printing object 1 is further reduced particularly in the vicinity of the end of the printing object 1 that is likely to come into contact with the print head 10 that is moved in the width direction of the printing object 1.
  • it can respond also to the printing target object from which the dimension of the width direction differs a little.
  • a plurality of print objects 1 are arranged inside the print section of the print object 1 supported by the table 16 and outside the print section of the print object 1 in the longitudinal direction of the print object 1.
  • Adsorption holes 6 are respectively provided.
  • the suction holes 6 inside the print section of the print object 1 suck the back surface of the print section of the print object 1.
  • a printing area on the printing object 1 by the printing apparatus 100 according to the present embodiment is a range indicated by a broken line in FIG.
  • the suction holes 6 outside the printing section of the printing object 1 form a non-printing suction section, and suck the back surface of the section where printing is not performed outside the printing section in the longitudinal direction of the printing object 1.
  • the diameter of each suction hole 6 is a predetermined value in which the deformation amount of the print object 1 due to suction is determined in advance according to the suction pressure, that is, the pressure of air in the decompression space 7.
  • the size is as follows. Thereby, the deformation
  • the diameter of the suction hole 6 is about several mm, in FIG.3 and FIG.4, the suction hole 6 is shown larger than actual so that it may be easy to see.
  • FIG. 5 is a block diagram of a detection apparatus and a control apparatus of the printing apparatus according to an embodiment of the present invention.
  • the detection device 30 includes a camera unit 31 and an image processing device 35 that processes an image signal of a mark image output from the camera unit 31.
  • the control device 40 includes a CPU 41, a main scanning control unit 42, a sub-scanning control unit 43, a printing control unit 44, a ⁇ stage drive control unit 45, a supply reel drive control unit 47, and a collection reel drive control unit 48. ing.
  • the CPU 41 commands the operations of the main scanning control unit 42, the sub scanning control unit 43, the ⁇ stage drive control unit 45, the supply reel drive control unit 47, and the collection reel drive control unit 48.
  • the main scanning control unit 42 performs drive control of the print head 10 via the print control unit 44, and also performs drive control of the linear motion motor 18 that constitutes the second moving mechanism, so that the print head for the print target 1 is printed. 10 main scans are controlled.
  • the sub-scanning control unit 43 controls the sub-scanning of the print head 10 with respect to the print target 1 by performing drive control of the mover 17b of the linear motion motor constituting the first moving mechanism.
  • the ⁇ stage drive control unit 45 performs drive control of the ⁇ stage 15.
  • the supply reel drive control unit 47 controls the drive motor of the supply reel 21 to send out the print target 1 from the supply reel 21.
  • the collection reel drive control unit 48 controls the drive of the drive motor for the collection reel 26 to wind the print target 1 around the collection reel 26.
  • FIG. 6 is a flowchart showing the operation of the printing apparatus according to the embodiment of the present invention.
  • the printing apparatus 100 first prints one printing section (step 101).
  • FIG. 7 is a diagram for explaining a printing operation in one printing section.
  • the width direction (X direction) of the print object 1 is the main scanning direction
  • the longitudinal direction (Y direction) of the print object 1 is the sub-scanning direction.
  • the main scanning control unit 42 in FIG. 5 first performs drive control of the linear motion motor 18 to move the print head 10 to the movement start position in the width direction (X direction) of the print target 1.
  • the main scanning control unit 42 performs drive control of the linear motion motor 18 to move the print head 10 in the drawing depth direction of FIG. Drive control is performed, and printing for one scanning width is performed on the printing object 1.
  • the UV curable ink ejected from each inkjet head of the print head 10 to the surface of the printing object 1 is cured immediately after printing by the ultraviolet rays irradiated from the UV light 20.
  • the sub-scanning control unit 43 in FIG. 5 performs drive control of the mover 17b of the linear motion motor, moves the moving stage 14 in the Y direction, and print object 1 that is sucked and fixed on the table 16. Is moved in the Y direction by one scanning width.
  • FIG. 7A shows the position of the moving stage 14 in the Y direction at the start of printing
  • FIG. 7B shows the position of the moving stage 14 in the Y direction when printing for one printing section is completed. ing.
  • the dancer roller 22 moves upward in the drawing shown by the arrow in FIG. 7A against the biasing force, and the dancer roller 25 is attached thereto. Due to the force, it moves downward in the figure as indicated by the arrow in FIG. Therefore, it is not necessary to drive the supply reel 21 and the recovery reel 26 every time the moving stage 14 is moved in the Y direction.
  • the drive reels 22 and 25 can move up and down by driving the supply reel 21 and the recovery reel 26. You can do this when you are approaching the limits of the range.
  • the print control unit 44 stores image data to be printed on the print object 1 and positioning mark data.
  • the print head 10 prints an image and a positioning mark on the print section of the print object 1.
  • FIG. 8 is a diagram showing a printed image and positioning marks for one printing section.
  • the positioning mark 3 has a shape that allows easy image recognition, such as a cross shape, for example, and two or more positioning marks 3 are printed at the corners in the width direction of the print object 1 for each printing section. .
  • printing is performed when the print head 10 is moved in the same direction.
  • printing may be performed while the print head 10 is moved in the direction opposite to the previous scan.
  • UV light sources that generate ultraviolet rays are provided on both sides of the print head 10 in the scanning direction.
  • Print section change operation In FIG. 6, when printing for one printing section is completed, the CPU 41 in FIG. 5 determines whether printing of all printing sections has been completed (step 102). If printing of all print sections has not been completed, the printing apparatus 100 changes the print section (step 103).
  • 9 and 10 are diagrams for explaining the operation of changing the print section.
  • the linear motion motors (stator 17a and mover 17b) as the first moving mechanism also serve as a printing section changing mechanism that changes the printing section of the printing object 1 supported by the table 16. Yes.
  • the guide rollers 23 and 24 and the upper roller 27 constitute a holding mechanism that holds the printing object 1 and lifts it from the table 16.
  • FIG. 9A shows a state where printing for one printing section has been completed.
  • the printing apparatus 100 lowers the upper roller 27 located above the guide rollers 23 and 24 from the state shown in FIG. 9A, and as shown in FIG.
  • the printing object 1 is held between the rollers 23 and 24.
  • the printing apparatus 100 raises the upper roller 27 and the guide roller 23 sandwiching the printing object 1 together, and also moves the printing object 1
  • the upper roller 27 and the guide roller 24 sandwiched are raised together, and the printing object 1 is lifted from the table 16 as shown in FIG.
  • the sub-scan control unit 43 in FIG. 5 performs drive control of the movable element 17b of the linear motion motor, moves the moving stage 14 in the opposite direction to that during printing, and prints the printing section where the printing of the table 16 has been completed. Return to where it was at the start.
  • FIG. 10A shows a state in which the table 16 is returned to the original place. From the state shown in FIG. 10A, the printing apparatus 100 lowers the upper roller 27 and the guide roller 23 that sandwich the printing object 1 together, and the upper roller 27 that sandwiches the printing object 1 and The guide roller 24 is lowered together, and the printing object 1 is mounted on the table 16 as shown in FIG. Then, the printing apparatus 100 lifts the upper roller 27 to the original position as shown in FIG. Through the above series of operations, the printing section of the printing object 1 supported by the table 16 is changed.
  • the first moving mechanism also serves as the print section changing mechanism and the holding mechanism holds the print target 1
  • the table 16 is returned to the place where the printing started in the print section where printing was completed, and the table Since the printing section of the printing object 1 supported by the printer 16 is changed, it is not necessary to separately provide a printing section changing mechanism, and the configuration is simple. In addition, since it is not necessary to separately perform the operation of returning the table 16 to the original location, the tact time is shortened.
  • the table 16 is returned to the place where the printing started in the printing section where printing was completed, and the printing object 1 supported by the table 16.
  • the printing object 1 is not displaced due to friction with the table 16.
  • the printing apparatus 100 detects the position of the positioning mark (step 104).
  • 11 and 12 are diagrams for explaining the operation of detecting the position of the positioning mark.
  • the main scanning control unit 42 in FIG. 5 first performs drive control of the linear motion motor 18 to move the camera unit 31 attached to the print head 10 to the position of the two positioning marks 3 as shown in FIG. Move one of the above to the sky.
  • the camera unit 31 acquires a mark image of the positioning mark 3, and the image processing device 35 in FIG. 5 processes the image signal of the mark image output from the camera unit 31 to print the positioning mark 3 print object.
  • the position in the longitudinal direction of 1 and the position in the width direction are detected.
  • the main scanning control unit 42 performs drive control of the linear motion motor 18 so that the camera unit 31 attached to the print head 10 is replaced with one of the two positioning marks 3 as shown in FIG. Move to one sky.
  • the camera unit 31 acquires the mark image of the positioning mark 3, and the image processing device 35 processes the image signal of the mark image output from the camera unit 31, and the longitudinal direction of the printing object 1 of the positioning mark 3. The position in the direction and the position in the width direction are detected.
  • the printing apparatus 100 next determines a correction amount for the position in the longitudinal direction of the print object 1 and a correction amount for the print start position in the width direction (step 105).
  • the sub-scanning control unit 43 in FIG. 5 determines the correction amount of the position in the longitudinal direction of the printing object 1 from the position in the longitudinal direction of the printing object 1 of each positioning mark 3 detected in step 104.
  • . 5 determines the correction amount of the print start position in the width direction of the print object 1 from the position in the width direction of the print object 1 of each positioning mark 3 detected in step 104.
  • the printing apparatus 100 corrects the position of the print object 1 in the longitudinal direction (step 106).
  • the sub-scanning control unit 43 in FIG. 5 performs drive control of the mover 17b of the linear motion motor that constitutes the first moving mechanism, based on the correction amount of the position in the longitudinal direction of the print target 1 determined in step 105.
  • the moving stage 14 is moved in the Y direction, and the position in the longitudinal direction of the printing object 1 supported by the table 16 is corrected.
  • a correction amount of the position of the printing object 1 in the longitudinal direction is determined from the position of each positioning mark 3 in the longitudinal direction of the printing object 1 (step 105). Based on the determined correction amount, the first moving mechanism determines the correction amount. Since the table 16 is moved and the position in the longitudinal direction of the printing object 1 supported by the table 16 is corrected (step 106), the influence of the expansion and contraction in the longitudinal direction due to the temperature change of the printing object 1 is suppressed. Complex image processing for correcting the expansion and contraction in the longitudinal direction of the printing object 1 is not necessary.
  • the printing apparatus 100 further corrects the positional deviation of the print object 1 in the ⁇ direction (step 107).
  • the image processing device 35 in FIG. 5 detects the amount of positional deviation in the ⁇ direction of the printing object 1 from the position in the longitudinal direction and the position in the width direction of the printing object 1 of each positioning mark 3 detected in step 104. .
  • the ⁇ stage drive control unit 45 in FIG. 5 rotates the table 16 in the ⁇ direction by the ⁇ stage 15 based on the positional deviation amount of the print object 1 detected by the image processing device 35 in the ⁇ direction.
  • the positional deviation in the ⁇ direction of the printing object 1 supported on the head is corrected.
  • a plurality of positioning marks 3 are printed for each printing section of the printing object 1, and the position of the positioning marks 3 is detected by the detection device 30. Can be detected. Then, based on the detection result, the table 16 is rotated in the ⁇ direction by the ⁇ stage 15 to correct the positional deviation in the ⁇ direction of the print object 1 supported by the table 16, so that the print object 1 in the ⁇ direction is corrected. The positional deviation is eliminated, and the image 2 is printed with higher accuracy.
  • FIG. 13 is a diagram showing a printed image and positioning marks for two printing sections.
  • a plurality of suction holes 6 are provided around the end of the print object 1 supported by the table 16 at intervals shorter than the central part of the print object 1.
  • the amount of lifting of the print object 1 can be further reduced in the vicinity of the end of the print object 1 that is highly likely to come into contact with the print head 10 moved in the width direction of the print object 1. .
  • the printing section of the printing object 1 is provided. Even if the heat of the ultraviolet light irradiated from the UV light 20 is conducted to the outside section where printing is not performed, the print object 1 is restrained from being stretched at that part, and the print object following the part is suppressed. It is possible to prevent wrinkles and the like from occurring in a portion that is not supported by one table 16.
  • a linear motion motor is used as the first moving mechanism and the second moving mechanism, but other moving mechanisms such as a ball screw may be used.
  • the holding mechanism for holding the printing object 1 is constituted by the guide rollers 23 and 24 and the upper roller 27.
  • the upper roller 27 is not limited to the roller, and is a guide roller. Any structure that can clamp the printing object 1 with 23 or 24 is acceptable.
  • two positioning marks 3 are printed for each printing section, but three or more positioning marks 3 may be printed for each printing section.
  • the camera unit 31 is attached to the print head 10 and the camera unit 31 is moved together with the print head 10, but the camera unit 31 may be fixedly installed.
  • the camera unit 31 includes the light source 32, the lens 33, and the camera 34, and the illumination light generated from the light source 32 is reflected by the half mirror in the lens 33 to print the object 1.
  • ring illumination or other illumination methods may be used as long as the illumination light can be irradiated onto the surface of the printing object.

Landscapes

  • Ink Jet (AREA)

Abstract

L'invention concerne un appareil d'impression dans lequel une surface arrière d'une section d'impression partielle d'un objet (1) à imprimer s'étendant sous la forme d'une bande est supportée sur une table (16) comportant une pluralité de trous de fixation par aspiration (6) pour la fixation par aspiration de l'objet (1) à imprimer et, au moment où une image est imprimée au moyen d'une tête d'impression dans la section d'impression de l'objet (1) à imprimer, ce dernier (1) est irradié par des rayons ultraviolets générés par une lumière UV afin de durcir une encre durcissable aux UV. Les intervalles (Ps) et (Pn) entre les trous de fixation par aspiration respectifs (6) de la table (16) sont des longueurs de telle sorte qu'une grandeur, selon laquelle l'objet (1) à imprimer flotte à partir de la table (16) en raison de l'irradiation par les rayons ultraviolets générés par la lumière UV, devient plus petite qu'un espace entre une surface de l'objet (1) à imprimer avant de flotter et la tête d'impression (10).
PCT/JP2018/048516 2018-02-21 2018-12-28 Appareil et procédé d'impression Ceased WO2019163298A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-029058 2018-02-21
JP2018029058A JP2019142128A (ja) 2018-02-21 2018-02-21 印刷装置及び印刷方法

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WO2019163298A1 true WO2019163298A1 (fr) 2019-08-29

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WO (1) WO2019163298A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7218996B2 (ja) * 2020-04-09 2023-02-07 ローランドディー．ジー．株式会社 インクジェットプリンタ
US11738573B2 (en) 2021-10-08 2023-08-29 Roland Dg Corporation Ink jet printer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007185922A (ja) * 2006-01-16 2007-07-26 Konica Minolta Medical & Graphic Inc インクジェット記録装置
JP2009073023A (ja) * 2007-09-20 2009-04-09 Seiko Epson Corp 液体噴射装置
JP2015127146A (ja) * 2015-03-02 2015-07-09 セイコーエプソン株式会社 液滴吐出装置
WO2018007121A1 (fr) * 2016-07-06 2018-01-11 Agfa Nv Courroie à vide pour dispositif d'impression à jet d'encre

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007185922A (ja) * 2006-01-16 2007-07-26 Konica Minolta Medical & Graphic Inc インクジェット記録装置
JP2009073023A (ja) * 2007-09-20 2009-04-09 Seiko Epson Corp 液体噴射装置
JP2015127146A (ja) * 2015-03-02 2015-07-09 セイコーエプソン株式会社 液滴吐出装置
WO2018007121A1 (fr) * 2016-07-06 2018-01-11 Agfa Nv Courroie à vide pour dispositif d'impression à jet d'encre

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