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WO2018143024A1 - Dispositif d'impression d'image, dispositif de séchage et procédé d'impression d'image - Google Patents

Dispositif d'impression d'image, dispositif de séchage et procédé d'impression d'image Download PDF

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Publication number
WO2018143024A1
WO2018143024A1 PCT/JP2018/002055 JP2018002055W WO2018143024A1 WO 2018143024 A1 WO2018143024 A1 WO 2018143024A1 JP 2018002055 W JP2018002055 W JP 2018002055W WO 2018143024 A1 WO2018143024 A1 WO 2018143024A1
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WO
WIPO (PCT)
Prior art keywords
waveguide
image recording
recording apparatus
base material
ink
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/JP2018/002055
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English (en)
Japanese (ja)
Inventor
雅晴 中川
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.)
Screen Holdings Co Ltd
Original Assignee
Screen Holdings Co Ltd
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 Screen Holdings Co Ltd filed Critical Screen Holdings Co Ltd
Publication of WO2018143024A1 publication Critical patent/WO2018143024A1/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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material

Definitions

  • the present invention relates to a technique for recording an image on the surface of a substrate by ejecting ink droplets toward the substrate such as paper by an inkjet method, and more particularly, a technique for drying ink attached to the surface of the substrate.
  • a technique for recording an image on the surface of a substrate by ejecting ink droplets toward the substrate such as paper by an inkjet method and more particularly, a technique for drying ink attached to the surface of the substrate.
  • a conventional ink jet type image recording apparatus has, for example, ink droplets from a plurality of ejection openings provided in a head toward the surface of a long belt-like (web-like) base material that moves in the longitudinal direction with respect to the head. By discharging the ink, ink is adhered to the surface of the substrate. Thereafter, the substrate to which the ink is attached is dried to dry the ink, and the image is fixed on the surface of the substrate.
  • Patent Document 1 discloses that ink is irradiated with a microwave supplied from a magnetron and reflected by a propeller member. Further, it is disclosed that drying of ink is promoted by sending warm air from a fan into a waveguide.
  • the ink When the ink is irradiated with microwaves, molecules of the ink solvent (water in the case of water-based ink) are heated and vaporized by vibration.
  • the drying method using microwaves can selectively heat the solvent of the ink, another drying method, for example, a method of heating the ink by blowing hot air onto the substrate, or a method of heating the substrate
  • the ink can be dried more efficiently than the method in which the ink is heated by contacting the drum.
  • the waveguide forms a highly closed space in order to prevent external leakage of the microwave. For this reason, when a base material is introduced into the inside of the waveguide and a drying process is performed, the solvent vapor evaporated from the ink attached to the base material stays inside the waveguide. Therefore, if the drying process is continued, the solvent vapor amount inside the waveguide gradually increases, which may reduce the drying efficiency. Further, when the amount of the solvent vapor inside the waveguide increases, the solvent vapor may condense and become droplets and adhere to the substrate, which may cause a reduction in image quality.
  • Patent Document 1 a solution to “a problem that the solvent vapor generated by the evaporation of the ink solvent stays in the waveguide, so that the drying speed of the ink discharged to the medium by the solvent vapor cannot be sufficiently obtained” is solved.
  • ventilation means for ventilating the waveguide are provided at the start and end portions of the waveguide.
  • An object of the present invention is to provide a technique capable of suppressing a decrease in drying efficiency in an ink drying process using electromagnetic waves.
  • a first aspect is an image recording apparatus, a head unit that ejects ink droplets toward a base material based on image data, and a head unit that discharges ink droplets.
  • a drying unit that irradiates the ink attached to the surface of the material with electromagnetic waves and heats the ink, and the drying unit introduces the base into the inside and leads out the base from the inside
  • a waveguide formed in a cylindrical shape
  • an electromagnetic wave supply unit that supplies the electromagnetic wave to the inside of the waveguide, and a material that transmits the electromagnetic wave.
  • an opposing member that is disposed at a position between the introduction opening and the lead-out opening and faces the surface of the base material introduced into the waveguide to which the ink is attached.
  • the second aspect is the image recording apparatus according to the first aspect, wherein the facing member is formed wider than the base material.
  • the third aspect is the image recording apparatus according to the second aspect, wherein the facing member has a pair of facing portions disposed to face both surfaces of the base material.
  • the fourth aspect is the image recording apparatus according to the second aspect or the third aspect, wherein the facing member is formed in a cylindrical shape surrounding the periphery of the base material.
  • a fifth aspect is the image recording apparatus according to any one of the first to fourth aspects, wherein the electromagnetic wave includes a microwave having a wavelength of 110 mm or more and 340 mm or less, and the opposing member has a relative dielectric constant. It is made of a material whose value obtained by multiplying the dielectric loss angle is 0.0012 or less.
  • the sixth aspect is the image recording apparatus according to the fifth aspect, wherein the heat resistant temperature of the material of the facing member is 200 ° C. or higher.
  • the seventh aspect is the image recording apparatus according to the fifth aspect or the sixth aspect, wherein the material of the facing member is quartz glass.
  • An eighth aspect is the image recording apparatus according to any one of the first to seventh aspects, wherein the opposing member and the base material introduced into the waveguide through the introduction opening are provided.
  • An airflow forming unit that forms an airflow toward the introduction opening or the outlet opening is further provided in between.
  • the ninth aspect is the image recording apparatus according to the eighth aspect, wherein the airflow forming unit forms an airflow from the introduction opening toward the outlet opening.
  • a tenth aspect is the image recording apparatus according to the eighth aspect or the ninth aspect, wherein the airflow forming unit is configured to transmit the base material and the inside of the waveguide from one of the introduction opening and the discharge opening.
  • a gas supply unit that supplies gas toward the opposing member, and a gas between the base member and the opposing member inside the waveguide from the other of the introduction opening and the extraction opening.
  • a gas suction unit for suction.
  • An eleventh aspect is a drying apparatus that irradiates an ink attached to the surface of a base material with electromagnetic waves and heats the ink, and includes an introduction opening for introducing the base material into the inside and a derivation for leading out the base material from the inside And a waveguide formed in a cylindrical shape, an electromagnetic wave supply unit that supplies the electromagnetic wave to the inside of the waveguide, and a material that transmits the electromagnetic wave. And an opposing member that is disposed at a position between the introduction opening and the lead-out opening and faces the surface of the base material introduced into the waveguide to which the ink is attached.
  • a twelfth aspect is the drying apparatus according to the eleventh aspect, wherein an air flow toward the introduction opening or the lead-out opening is formed between the facing member and the base material introduced into the waveguide.
  • a thirteenth aspect is an image recording method, an ejection step of ejecting ink droplets from a head portion based on image data toward a substrate, and the ejected from the head portion and adhered to the surface of the substrate.
  • a fourteenth aspect is the image recording method according to the thirteenth aspect, wherein the introduction opening or the lead-out opening is provided between the facing member and the base material introduced into the waveguide in the introduction step.
  • An air flow forming step for forming an air flow toward the introduction opening or the lead-out opening is provided between the facing member and the base material introduced into the waveguide in the introduction step.
  • the solvent vapor and paper dust generated from the ink adhering to the surface of the base material can be blocked by the opposing member, the solvent vapor diffuses inside the waveguide. Can be reduced. Accordingly, an increase in the amount of solvent vapor inside the waveguide can be suppressed, and a decrease in ink drying efficiency can be suppressed.
  • the image recording apparatus of the second aspect since the base material is covered with the opposing member wider than the base material, the solvent vapor that diffuses while spreading in the width direction of the base material can be blocked by the opposing member. This effectively reduces the diffusion of the solvent vapor into the waveguide.
  • the base material can be shielded from both sides, so that the solvent vapor can be effectively reduced from diffusing inside the waveguide. it can.
  • the solvent vapor can effectively reduce the diffusion into the waveguide by surrounding the periphery of the base material.
  • the microwave absorption of the counter member can be kept low by forming the counter member with a material whose relative dielectric constant multiplied by the dielectric loss angle is 0.0012 or less. Therefore, the ink can be efficiently dried.
  • the opposing member by forming the opposing member with a material having a heat resistant temperature of 200 ° C. or higher, it is possible to reduce the opposing member from being thermally deformed by a high-temperature solvent vapor or the like.
  • the opposing member having high heat resistance can be obtained by forming the opposing member with quartz glass.
  • the counter member in which the ink solvent hardly permeates can be obtained, the cleaning operation of the counter member can be facilitated.
  • an air flow toward the introduction opening or the lead-out opening is formed between the facing member and the base material introduced into the inside of the waveguide.
  • the generated solvent vapor is discharged outside the waveguide.
  • the solvent vapor can be discharged without hindering the movement of the base material.
  • the image recording apparatus of the tenth aspect it is possible to form an air flow from one of the introduction opening and the lead-out opening toward the other between the base material and the opposing member inside the waveguide.
  • the drying apparatus since the solvent vapor generated from the ink adhering to the surface of the substrate can be blocked by the opposing member, the diffusion of the solvent vapor into the waveguide can be reduced. Accordingly, an increase in the amount of solvent vapor inside the waveguide can be suppressed, and a decrease in ink drying efficiency can be suppressed.
  • an air flow directed toward the introduction opening or the lead-out opening is formed between the opposing member and the base material introduced into the waveguide, thereby generating from the surface of the base material.
  • the solvent vapor and paper powder thus discharged are discharged to the outside of the waveguide.
  • the solvent vapor or paper powder generated from the ink adhering to the surface of the substrate can be blocked by the opposing member, the solvent vapor diffuses inside the waveguide. Can be reduced. Accordingly, an increase in the amount of solvent vapor inside the waveguide can be suppressed, and a decrease in ink drying efficiency can be suppressed.
  • an air flow toward the introduction opening or the lead-out opening is formed between the facing member and the base material introduced into the inside of the waveguide.
  • the generated solvent vapor and paper dust are discharged outside the waveguide.
  • FIG. 1 is a schematic side view showing an image recording apparatus 1 of an embodiment. It is a schematic perspective view which shows the whole drying part 5 of embodiment. It is a schematic plan view which shows the cross section of the drying part 5 of embodiment.
  • FIG. 4 is a front view showing a cross section of the drying section 5 along the line A1-A1 shown in FIG.
  • FIG. 4 is a side view showing a cross section of the drying section 5 along the line A2-A2 shown in FIG.
  • 3 is a flowchart showing the operation of the image recording apparatus 1 of the embodiment.
  • FIG. 1 is a schematic side view illustrating an image recording apparatus 1 according to an embodiment.
  • the image recording apparatus 1 records an image on the surface 2S of the substrate 2 by ejecting ink droplets toward the substrate 2 by an inkjet method.
  • the base material 2 is a sheet formed in a long belt shape (web shape), but the form of the base material 2 is not limited to this.
  • the image recording apparatus 1 includes a housing 100 that houses each element.
  • the image recording apparatus 1 includes a delivery unit 3, a head unit 4, a drying unit 5 (drying device), a gas supply unit 61, a gas suction unit 65, a winding unit 7, and a control unit 8.
  • the delivery unit 3, the head unit 4, the drying unit 5, the winding unit 7, and the control unit 8 are disposed inside the housing 100.
  • the gas supply unit 61 and the gas suction unit 65 are disposed inside and outside the housing 100. It is arrange
  • the web-shaped substrate 2 is fed from the delivery unit 3 arranged in a roll state by the conveyance drive unit 90, and then horizontally transported in the longitudinal direction (Y direction), and is wound into a roll by the winding unit 7.
  • the horizontal conveyance means that the surface 2S which is the main surface (the surface having the largest area) of the substrate 2 is conveyed in a state parallel to the horizontal plane (XY plane).
  • the transport driving unit 90 rotationally drives a drive motor provided in the winding unit 7 and detects the transport speed, position information, and the like of the base material 2 with a rotary encoder or the like.
  • the conveyance driving unit 90, the sending unit 3, and the winding unit 7 are examples of moving units that move the base material 2.
  • the head unit 4 and the drying unit 5 are disposed so as to face the surface 2S (XY plane) of the substrate 2 in a section where the substrate 2 is horizontally conveyed.
  • the head unit 4 includes a first head 41, a second head 42, a third head 43, and a fourth head 44 that are arranged on the upper side (+ Z side) of the substrate 2 that is horizontally conveyed and are sequentially arranged in the Y direction. .
  • Each of the first head 41 to the fourth head 44 ejects ink droplets of a specific color toward the surface 2S of the substrate 2 (the main surface on the + Z side (surface having the largest area)).
  • the first head 41 ejects cyan (C) ink droplets
  • the second head 42 ejects magenta (M) ink droplets
  • the third head 43 ejects yellow (Y) ink droplets.
  • the droplets are ejected
  • the fourth head 44 may eject droplets of black (K) ink.
  • Each of the first head 41 to the fourth head 44 may be configured to be able to eject ink droplets of three different sizes (large size, medium size, and small size).
  • the first head 41 is provided with a plurality of discharge ports (not shown) arranged in the X direction on the bottom surface facing the surface 2S of the substrate 2, and a specific color (independently from each of the plurality of discharge ports). For example, ink droplets of cyan) are ejected.
  • the plurality of ejection openings are provided over a width that is equal to or larger than the size of the region in which an image is to be recorded in the width direction (X direction) of the substrate 2.
  • the second head 42 to the fourth head 44 are also provided with a plurality of ejection openings, respectively.
  • the drying unit 5 is arranged on the downstream side (+ Y side) in the transport direction of the base material 2 with respect to the head unit 4.
  • the drying unit 5 performs a drying process in which the ink discharged from the head unit 4 is irradiated with electromagnetic waves on the portion of the base material 2 where the surface 2S adheres to dry the ink.
  • a microwave having a wavelength of 110 mm or more and 340 mm or less is suitable as the electromagnetic wave applied to the substrate 2 in the drying unit 5, but the wavelength of the electromagnetic wave can be appropriately determined according to the type of the solvent of the ink.
  • an electromagnetic wave to which the absorption wavelength of the solvent component (water) contained in the ink belongs specifically, a microwave having a frequency of 2.45 GHz (gigahertz) can be used.
  • FIG. 2 is a schematic perspective view showing the entire drying unit 5 of the embodiment.
  • FIG. 3 is a schematic plan view showing a cross section of the drying unit 5 of the embodiment.
  • FIG. 4 is a front view showing a cross section of the drying section 5 taken along the line A1-A1 shown in FIG.
  • FIG. 5 is a side view showing a cross section of the drying section 5 along the line A2-A2 shown in FIG.
  • the drying unit 5 includes an electromagnetic wave generation unit 51, an amplifier unit 52, a waveguide unit 53, a reflection unit 55, and a short circuit unit 57.
  • the electromagnetic wave generator 51 includes a magnetron that generates an electromagnetic wave such as a microwave.
  • the amplifier unit 52 emits the electromagnetic wave generated by the electromagnetic wave generation unit 51 toward the waveguide unit 53.
  • the reflection unit 55 reflects the electromagnetic wave emitted from the amplifier unit 52 and passed through the waveguide unit 53. Inside the waveguide portion 53, a standing wave is generated by an electromagnetic wave emitted from the amplifier portion 52 and reflected by the reflecting portion 55.
  • the short-circuit portion 57 terminates the electromagnetic waves that are not reflected by the reflection portion 55.
  • the waveguide portion 53 is a member formed in a cylindrical shape extending in the X direction.
  • the waveguide section 53 includes a + Y side wall 531, a ⁇ Y side wall 532 facing the side wall 531, a + Z side side wall 534, and a ⁇ Z side side wall 535 facing the side wall 534. It is a member formed in the shape of a square tube having.
  • the waveguide portion 53 is provided with a base material passage portion 54 for allowing the inside of the waveguide portion 53 to pass through the base material 2.
  • the base material passage portion 54 forms a lead-out opening 541 in the side wall 531 on the + Y side of the waveguide portion 53. Further, the base material passage portion 54 forms an introduction opening 542 in the side wall 532 on the ⁇ Y side of the waveguide portion 53.
  • the lead-out opening 541 and the introduction opening 542 are slit-like openings larger than the length in the width direction (X direction) of the substrate 2.
  • the base material 2 was introduced into the waveguide portion 53 from the introduction opening 542 provided on the ⁇ Y side of the waveguide portion 53, and then provided on the + Y side through the inside of the waveguide portion 53. Derived from the outlet opening 541.
  • the lead-out opening 541 and the introduction opening 542 are provided on the same XY plane, and the base material 2 passes through them linearly. However, it is not essential to provide the outlet opening 541 and the inlet opening 542 on the same plane.
  • a pair of projecting portions 544 and 544 projecting to the + Y side is provided on the outer surface (+ Y side surface) of the side wall 531.
  • the pair of overhang portions 544 and 544 are formed in a long shape extending longer in the X direction than the outlet opening 541, and are disposed on the + Z side and the ⁇ Z side of the outlet opening 541.
  • the pair of overhang portions 544 and 544 reduce electromagnetic wave leakage from the lead-out opening 541 to the external space by reflecting the electromagnetic wave emitted from the lead-out opening 541 to the inside of the waveguide portion 53.
  • the base material 2 passes between the pair of overhang portions 544 and 544 after passing through the introduction opening 542.
  • a pair of projecting portions 545 and 545 projecting to the ⁇ Y side is also provided on the outer surface ( ⁇ Y side surface) of the side wall 532.
  • the pair of overhang portions 545 and 545 are formed in a long shape extending longer in the X direction than the introduction opening 542, and are disposed on the + Z side and the ⁇ Z side of the introduction opening 542.
  • the pair of overhang portions 545 and 545 reflects electromagnetic waves emitted from the introduction opening 542 to the inside of the waveguide portion 53, thereby reducing leakage of electromagnetic waves from the introduction opening 542 to the external space.
  • the base material 2 passes between the pair of projecting portions 545 and 545, passes through the inside of the waveguide portion 53, and passes through the introduction opening 542.
  • the amplifier unit 52 may be made of a low dielectric constant material, for example, a resin material such as high density polyethylene (UHMW) polytetrafluoroethylene. Note that high-density polyethylene may be used as the amplifier unit 52 from the viewpoint of ease of processing and cost.
  • UHMW high density polyethylene
  • UHMW high density polyethylene
  • high-density polyethylene may be used as the amplifier unit 52 from the viewpoint of ease of processing and cost.
  • the reflection unit 55 is disposed on the + X side from the waveguide unit 53 and reflects the electromagnetic wave emitted from the amplifier unit 52.
  • the reflection surface ( ⁇ X side surface) facing the inside of the waveguide portion 53 of the reflection portion 55 can be formed of a material that reflects electromagnetic waves, for example, a metal such as aluminum.
  • the reflection unit 55 is disposed such that a node of a standing wave generated between the reflection surface and the output surface of the amplifier unit 52 is located on the reflection surface.
  • the facing member 10 is disposed inside the waveguide portion 53.
  • the facing member 10 is a member facing the surface 2S to which the ink in the substrate 2 introduced into the waveguide portion 53 is attached at a position between the introduction opening 542 and the outlet opening 541.
  • the opposing member 10 has a shielding frame (see FIG. 6) formed in a cylindrical shape (here, a square cylindrical shape) surrounding the periphery of the substrate 2. More specifically, the facing member 10 includes a pair of facing portions 101 and 102 facing in the Z direction and a pair of facing portions 103 and 104 that connect the + X end and the ⁇ X end of the pair of facing portions 101 and 102, respectively. With.
  • the opposing portions 101 to 104 surround the periphery of the base material 2 passing through the inside of the waveguide portion 53, thereby blocking the solvent vapor generated from the ink attached to the base material 2, so that the solvent vapor is guided to the waveguide. The diffusion to the inside of the portion 53 is suppressed.
  • the facing portions 101 and 102 are plate-like portions parallel to the XY plane.
  • the facing portion 101 is disposed on the + Z side of the base material 2 that passes through the inside of the waveguide portion 53.
  • the ⁇ Z side surface of the facing portion 101 is a smooth surface parallel to the XY plane and faces the surface 2S on the + Z side of the substrate 2.
  • the facing portion 102 is disposed on the ⁇ Z side of the base material 2 that passes through the inside of the waveguide portion 53.
  • the + Z side surface of the facing portion 102 is a smooth surface parallel to the XY plane, and faces the ⁇ Z side surface of the substrate 2. That is, the facing portions 101 and 102 are an example of a pair of facing portions that are disposed to face both surfaces of the substrate 2.
  • the facing portions 103 and 104 are plate-like portions parallel to the YZ plane.
  • the facing portion 103 is disposed on the + X side of the base material 2 that passes through the inside of the waveguide portion 53.
  • the ⁇ X side surface of the facing portion 103 is a smooth surface parallel to the YZ plane and faces the side end portion on the + X side of the substrate 2.
  • the facing portion 104 is disposed on the ⁇ X side of the base material 2 that passes through the inside of the waveguide portion 53.
  • the + X side surface of the facing portion 104 is a smooth surface parallel to the YZ plane and faces the ⁇ X side end portion of the substrate 2.
  • the length in the Y direction of the facing member 10 of this example is longer than the length from the outlet opening 541 to the inlet opening 542 and longer than the + Y side surface of the side wall 531 to the ⁇ Y side surface of the side wall 532. It has become.
  • the + Y side end portions of the facing portions 101 and 102 extend to positions outside the lead-out opening 541 of the waveguide portion 53 and overlap with the pair of projecting portions 544 and 544 in the Z direction.
  • the ⁇ Y side end portions of the facing portions 101 and 102 extend to positions outside the introduction opening 542 of the waveguide portion 53 and overlap with the pair of projecting portions 545 and 545 in the Z direction. Yes.
  • the length of the opposing member 10 in the Z direction is substantially the same as the length of the lead-out opening 541 and the introduction opening 542 in the Z direction.
  • the ⁇ Z side facing portion 102 is connected to the edge portion forming the lead-out opening 541 of the side wall 531, the ⁇ Z side overhang portion 544, the edge portion forming the introduction opening 542 of the side wall 532, and the ⁇ Z side overhang portion 545.
  • the opposing member 10 is supported by contacting.
  • the + Z side surface of the facing portion 101 is in contact with the + Z side surface of the edge portion forming the lead-out opening 541 in the side wall 531 and is in contact with the + Z side surface of the edge portion forming the introduction opening 542 in the side wall 532.
  • the length of the opposing member 10 in the X direction is substantially the same as the length of the outlet opening 541 and the introduction opening 542 in the X direction.
  • the + X side surface of the facing portion 103 is in contact with the + X side surface of the edge that forms the lead-out opening 541 and the introduction opening 542 of the side walls 531 and 532.
  • the ⁇ X side surface of the facing portion 104 is in contact with the ⁇ X side surface of the edge portion that forms the lead-out opening 541 and the introduction opening 542 of the side walls 531 and 532.
  • the gap between the opposing portions 103 and 104 and the side walls 531 and 532 is eliminated. be able to. Thereby, it is possible to reduce the solvent vapor generated from the substrate 2 from entering the inside of the waveguide portion 53.
  • the facing portions 101 to 104 of the facing member 10 are brought into contact with the edges of the outlet opening 541 and the inlet opening 542 in the side walls 531 and 532.
  • part or all of the facing portions 101 to 104 may be supported in a non-contact state with the edges of the lead-out opening 541 and the introduction opening 542.
  • FIG. 6 is a schematic perspective view showing the waveguide portion 53 of the embodiment in an exploded manner.
  • the waveguide portion 53 can be configured, for example, by stacking two components 53 a and 53 b formed in a U-shaped cross section in the Z direction.
  • the component 53 a is a member corresponding to the ⁇ Z side portion of the waveguide portion 53
  • the component 53 b is a member corresponding to the + Z side portion of the waveguide portion 53.
  • Concave parts 581 and 582 that are recessed in the X direction are provided in the middle part of the end faces of the part 53a facing the + Y side and the + Y side of the ⁇ Y side.
  • concave portions 583 and 584 that are recessed in the X direction are provided in the middle portion of the end faces of the component 53b facing the + Y side and the ⁇ Y side on the ⁇ Z side.
  • the opposing member 10 is fitted into the recesses 581 to 584, whereby the opposing member 10 is located between the lead-out opening 541 and the introduction opening 542 inside the waveguide portion 53. It is in a state of being mounted across.
  • the mounting example shown in FIG. 6 is an example, and the opposing member 10 may be mounted inside the waveguide portion 53 by other methods.
  • the facing member 10 may be inserted into the waveguide portion 53 through the lead-out opening 541 or the introduction opening 542 of the waveguide portion 53.
  • the + Y side portion and the ⁇ Y side portion of the facing member 10 are not provided on the side walls 531 and 532, the pair of overhang portions 544 and 544, or the pair of overhang portions 545 and 545 of the waveguide portion 53. You may provide the mechanism which latches.
  • the facing member 10 is made of a material that transmits electromagnetic waves.
  • the electromagnetic wave (stationary wave) generated in the waveguide portion 53 passes through the facing member 10 and is absorbed by the ink attached to the substrate 2.
  • the material of the facing member 10 is a nonpolar substance such as quartz glass, high density polyethylene, fluororesin (PTFE), borosilicate glass, soda glass (dipole moment is zero or substantially zero). Substance).
  • the microwave power P absorbed by the dielectric is theoretically defined by the following equation (1).
  • Equation (1) “K” is a constant (0.556 ⁇ 10 ⁇ 10), “ ⁇ ” is the dielectric constant of the dielectric, “tan ⁇ ” is the dielectric loss angle of the dielectric, and “f” is Frequency (Hz) and “E” indicate electric field strength (V / m), respectively.
  • Table 1 shows the relative dielectric constant, dielectric loss angle, and heat resistance temperature of each material.
  • the ⁇ ⁇ tan ⁇ of each material obtained from Table 1 is 0.00037 for quartz glass, 0.00115 to 0.001175 for high-density polyethylene, 0.00042 for fluororesin, 0.01702 for borosilicate glass, and soda glass. 0.145.
  • the counter member 10 absorbs less microwaves.
  • quartz glass, high-density polyethylene, and fluororesin are desirable, and the value of ⁇ ⁇ tan ⁇ is desirably 0.0012 or less (Requirement 1).
  • the facing member 10 is exposed to a high-temperature solvent vapor generated from the ink of the substrate 2, it is desirable that the heat resistant temperature (melting point) is high.
  • the heat resistant temperature of the material of the facing member 10 is 200 ° C. or higher (Requirement 2).
  • materials that satisfy this requirement are quartz glass, fluororesin, and borosilicate glass.
  • a material suitable as the facing member 10 is quartz glass that satisfies the requirements 1 to 3. Quartz glass has a relatively low microwave absorption and a relatively high heat resistance temperature. Furthermore, since quartz glass is relatively high in hardness, it is relatively easy to process to improve the smoothness of the surface of the facing member 10. Therefore, by adopting quartz glass as the material of the opposing member 10, maintenance of the opposing member 10 is facilitated.
  • the gas supply unit 61 is a unit that supplies gas to the drying unit 5. As shown in FIG. 1, the gas supply unit 61 includes a blower drive unit 611 that applies pressure to the gas, a cylindrical supply duct 612 that guides the gas pumped from the blower drive unit 611 to the drying unit 5, and an external And an air intake duct 613 for guiding the gas taken in from the air to the air blowing drive unit 611.
  • blower driving unit 611 a known blower having a fan can be used.
  • the blower driving unit 611 can be configured to be able to blow warm air by providing a heater (electric heater or the like) at the front stage or the rear stage of the fan.
  • the air blowing drive unit 611 is provided with a known dehumidifier before or after the fan, thereby dehumidified gas with a low dew point (for example, air with a dew point lower than room temperature, such as a dew point of 0 ° C., or humidity of 30 to 45). % Air).
  • the gas suction unit 65 is a unit that sucks gas from the drying unit 5.
  • the gas suction unit 65 includes a suction drive unit 651 that applies pressure to the gas, a cylindrical suction duct 652 that guides the gas in the drying unit 5 to the suction drive unit 651, and a gas pumped from the suction drive unit 651.
  • the leading end of the supply duct 612 includes a gas supply port portion 6121 that discharges gas on the + Z side of the substrate 2 and a gas supply that discharges gas on the ⁇ Z side of the substrate 2. It is divided into a mouth portion 6122.
  • the gas supply port portions 6121 and 6122 form gas supply ports that extend in the X direction and whose front ends face the introduction opening 542, and the width direction (X Gas) at a substantially uniform flow rate over the direction). More specifically, the gas supply port portion 6121 discharges gas between the base member 2 and the facing portion 101 of the facing member 10 inside the waveguide portion 53.
  • the gas supply port portion 6122 discharges gas between the base member 2 and the facing portion 102 of the facing member 10 inside the waveguide portion 53.
  • the front end of the suction duct 652 sucks the gas on the + Z side of the base material 2 and the gas suction port 6521 for sucking the gas on the ⁇ Z side of the base material 2. It is divided into a gas suction port 6522.
  • the gas suction ports 6521 and 6522 form a gas suction port extending in the X direction and having a tip directed toward the lead-out opening 541, and the width direction (X Aspirate the gas over the direction). More specifically, the gas suction port portion 6521 sucks the gas between the base member 2 and the facing portion 101 of the facing member 10 inside the waveguide portion 53.
  • the gas suction port 6522 sucks the gas between the base member 2 and the facing portion 102 of the facing member 10 inside the waveguide portion 53.
  • the gas discharged from the gas supply port portion 6121 passes between the base material 2 and the facing portion 101 and is sucked into the gas suction port portion 6521.
  • the solvent vapor generated from the ink is discharged to the outside of the waveguide portion 53.
  • the solvent vapor can be discharged without hindering the movement of the base material.
  • the gas discharged from the gas supply port 6122 on the ⁇ Z side from the base material 2 passes between the base material 2 and the facing portion 102 and is sucked into the gas suction port 6522. .
  • an air flow can be formed between the main surfaces on both sides of the base material 2 and the facing portions 101 and 102, and therefore, the base material 2 is less fluttered than when the air flow is formed only on one side. it can.
  • the base material 2 contacts other members (for example, the opposing member 10, the overhang
  • the airflow may be formed only on the surface 2S side.
  • Control unit 8 controls the operation of each element by issuing an operation command to each element of the image recording apparatus 1.
  • the configuration of the control unit 8 as hardware is the same as that of a general computer. That is, the control unit 8 stores a CPU that performs various arithmetic processes, a ROM that is a read-only memory that stores basic programs, a RAM that is a readable and writable memory that stores various information, and a control application or data.
  • a storage unit is provided.
  • FIG. 7 is a flowchart showing the operation of the image recording apparatus 1 of the embodiment.
  • the control unit 8 issues an operation command to each element of the image recording apparatus 1, and operations (image recording operations) described below are sequentially executed.
  • the discharge step S10, the electromagnetic wave supply step S20, the introduction step S30, the facing step S40, the airflow formation step S50, and the derivation step S60 are performed.
  • the execution order can be arbitrarily changed. It can also be assumed that a plurality of steps are executed in parallel.
  • the control unit 8 issues an operation command to the conveyance driving unit 90, and the base material 2 is continuously conveyed from the sending unit 3 to the winding unit 7. Subsequently, the control unit 8 issues an operation command to 4, and the head unit 4 executes ejection of ink droplets to the substrate 2 based on the image data (ejection control signal) transmitted from the control unit 8. As a result, a plurality of CMYK ink droplets adhere to the surface 2S of the substrate 2 based on the halftone dot image corresponding to the original image.
  • an electromagnetic wave supply step S20 is executed.
  • the control unit 8 issues an operation command to the electromagnetic wave generation unit 51 of the drying unit 5, and the electromagnetic wave is supplied into the waveguide unit 53.
  • an electromagnetic wave standing wave is formed between the amplifier unit 52 and the reflection unit 55 inside the waveguide unit 53.
  • the introduction step S30 is executed.
  • the portion of the base material 2 to which the ink has adhered is introduced into the inside of the waveguide portion 53 through the lead-out opening 541 by the continuous transport of the base material 2 by the transport driving unit 90.
  • the facing step S40 is performed.
  • the portion of the base material 2 to which the ink has adhered is opposed to the facing member 10 by continuous transport of the base material by the transport driving unit 90. More specifically, the surface 2S of the base material 2 faces the facing portion 101 of the facing member 10, and the back surface opposite to the surface 2S of the base material 2 faces the facing portion 102 of the facing member 10.
  • an airflow forming step S50 is performed.
  • the airflow forming step S50 an airflow from the introduction opening 542 toward the outlet opening 541 is formed between the facing member 10 and the portion of the base material 2 where the ink is adhered.
  • the control unit 8 gives an operation command to the gas supply unit 61 and the gas suction unit 65, and the gas discharge from the gas supply port units 6121 and 6122 and the gas in the gas suction port units 6521 and 6522 are performed. This is realized by performing suction.
  • the air flow formation itself may be started after (or before) the continuous conveyance of the base material 2 is started in the discharge step S10.
  • a derivation step S60 is performed.
  • the portion of the base material 2 that has been dried and fixed by the continuous conveyance of the base material 2 by the transport driving unit 90 is led out of the waveguide section 53 through the introduction opening 542. Is done.
  • the solvent vapor generated from the ink adhering to the surface 2S of the base material 2 by the electromagnetic wave irradiation inside the waveguide portion 53 is caused to flow to the opposing member 10 (particularly, the opposing portion 101). Can be blocked. This can reduce the diffusion of the solvent vapor into the waveguide portion 53. Therefore, an increase in the amount of solvent vapor inside the waveguide portion 53 can be suppressed, and a decrease in ink drying efficiency can be suppressed.
  • an air flow is formed between the base member 2 and the facing member 10 inside the waveguide portion 53, whereby an air flow from the introduction opening 542 toward the outlet opening 541 is formed.
  • Solvent vapor generated from the surface of the substrate is discharged outside the waveguide. Thereby, it can suppress that solvent vapor
  • the facing member 10 includes the facing portions 101 to 104 so as to surround the entire periphery of the portion of the base material 2 that passes through the waveguide portion 53.
  • the facing member 10 includes all of the facing portions 101 to 104.
  • the facing member 10 is only the facing portion 101.
  • the opposing portion 101 faces only the surface 2S of the substrate 2 inside the waveguide portion 53, but the surface 2S is a surface to which ink is attached and the substrate 2 Is the main surface with the largest area.
  • the facing member 10 is configured only by the facing portion 101, it is possible to effectively reduce diffusion into the waveguide portion 53 by directly receiving the catalyst vapor generated from the surface 2 ⁇ / b> S at the facing portion 101. It is also conceivable that the opposing member 10 is only a pair of opposing portions 101 and 102. In this case, the diffusion of the catalyst vapor into the waveguide portion 53 can be suppressed more than when only the facing portion 101 is used.
  • the length of the opposing member 10 in the Y direction may be shorter than the length between the side walls 531 and 532 of the waveguide portion 53.
  • a gap is formed between the facing member 10 and the side wall 531 or the side wall 532, but the solvent vapor can be blocked by the facing member 10 (particularly, the facing portion 101), so that the facing member 10 is not provided. The diffusion of the solvent vapor into the waveguide can be reduced.
  • the temperature of the ink adhering to the substrate 2 rises as it travels inside the waveguide portion 53. Therefore, the solvent in the ink evaporates on the + Y side (closer to the downstream side in the transport direction of the base material 2) than the position on the ⁇ Y side (closer to the upstream side in the transport direction of the base material 2) in the waveguide section 53. It's easy to do. That is, the amount of solvent vapor generated on the + Y side (that is, the side wall 531 side) in the waveguide portion 53 can be increased. Therefore, in order to suppress the penetration of the solvent vapor into the waveguide portion 53, it is desirable that the facing member 10 is in contact with the edge portion of the outlet opening 541 in the side wall 531 without any gap.
  • the + Y side end of the facing member 10 is positioned outside the edge of the lead-out opening 541 (a position overlapping with the pair of projecting portions 544 and 544 in the Z direction or a pair of projecting portions 544 and 544). It is desirable to extend to the position on the + Y side.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biotechnology (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Ink Jet (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

L'invention concerne une technologie permettant de supprimer une réduction de l'efficacité de séchage dans un traitement de séchage d'encre à l'aide d'ondes électromagnétiques. Un dispositif d'impression d'image comprend une unité de séchage (5) qui chauffe l'encre qui a adhéré à une surface (2S) d'un substrat (2) par irradiation de l'encre avec des ondes électromagnétiques. L'unité de séchage (5) comprend : une partie guide d'onde (53) qui est formée sous la forme d'un tube et qui est pourvue d'une ouverture de guidage vers l'intérieur (542) à travers laquelle le substrat (2) est guidé vers l'intérieur et d'une ouverture de guidage vers l'extérieur (541) à travers laquelle le substrat (2) est guidé vers l'extérieur ; et un élément opposé (10) qui est formé par un matériau qui transmet des ondes électromagnétiques, qui est disposé à l'intérieur de la partie guide d'onde (53) en une position entre l'ouverture de guidage vers l'intérieur (542) et l'ouverture de guidage vers l'extérieur (541) et qui s'oppose à la surface (2S) à laquelle l'encre a adhéré au substrat (2) qui est guidé dans la partie guide d'onde (53).
PCT/JP2018/002055 2017-02-03 2018-01-24 Dispositif d'impression d'image, dispositif de séchage et procédé d'impression d'image Ceased WO2018143024A1 (fr)

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JP2017-018315 2017-02-03
JP2017018315A JP2018122561A (ja) 2017-02-03 2017-02-03 画像記録装置、乾燥装置および画像記録方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020075261A1 (fr) * 2018-10-11 2020-04-16 株式会社ニッシン Dispositif chauffant à micro-ondes et procédé de chauffage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7615742B2 (ja) * 2021-02-18 2025-01-17 セイコーエプソン株式会社 乾燥装置、印刷システム
JP2022148081A (ja) * 2021-03-24 2022-10-06 セイコーエプソン株式会社 印刷装置及び印刷方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07195683A (ja) * 1993-11-30 1995-08-01 Xerox Corp インクジェットプリンタ用のインク乾燥装置および方法
JPH07235374A (ja) * 1994-02-15 1995-09-05 Internatl Business Mach Corp <Ibm> シート状材料を処理する際にマイクロ波エネルギーを印加するための装置及び方法
JP2001096727A (ja) * 1999-09-29 2001-04-10 Fuji Xerox Co Ltd インク乾燥装置およびインクジェット記録装置
US20020101491A1 (en) * 2001-01-30 2002-08-01 Robert Ervin Compact microwave-powered lamp, inkjet printer using this lamp, and ultraviolet light curing using this lamp
JP2003022890A (ja) * 2001-04-30 2003-01-24 Hewlett Packard Co <Hp> 乾燥装置及び乾燥方法、並びにイメージング装置
JP2010005861A (ja) * 2008-06-25 2010-01-14 Mimaki Engineering Co Ltd インクジェットプリンタ
JP2013114835A (ja) * 2011-11-28 2013-06-10 Murata Mach Ltd マイクロ波加熱装置、及びこれを用いた画像定着装置
JP2016147396A (ja) * 2015-02-10 2016-08-18 株式会社Ｓｃｒｅｅｎホールディングス 画像記録装置および画像記録方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07195683A (ja) * 1993-11-30 1995-08-01 Xerox Corp インクジェットプリンタ用のインク乾燥装置および方法
JPH07235374A (ja) * 1994-02-15 1995-09-05 Internatl Business Mach Corp <Ibm> シート状材料を処理する際にマイクロ波エネルギーを印加するための装置及び方法
JP2001096727A (ja) * 1999-09-29 2001-04-10 Fuji Xerox Co Ltd インク乾燥装置およびインクジェット記録装置
US20020101491A1 (en) * 2001-01-30 2002-08-01 Robert Ervin Compact microwave-powered lamp, inkjet printer using this lamp, and ultraviolet light curing using this lamp
JP2003022890A (ja) * 2001-04-30 2003-01-24 Hewlett Packard Co <Hp> 乾燥装置及び乾燥方法、並びにイメージング装置
JP2010005861A (ja) * 2008-06-25 2010-01-14 Mimaki Engineering Co Ltd インクジェットプリンタ
JP2013114835A (ja) * 2011-11-28 2013-06-10 Murata Mach Ltd マイクロ波加熱装置、及びこれを用いた画像定着装置
JP2016147396A (ja) * 2015-02-10 2016-08-18 株式会社Ｓｃｒｅｅｎホールディングス 画像記録装置および画像記録方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020075261A1 (fr) * 2018-10-11 2020-04-16 株式会社ニッシン Dispositif chauffant à micro-ondes et procédé de chauffage
JPWO2020075261A1 (ja) * 2018-10-11 2021-09-02 株式会社ニッシン マイクロ波加熱装置および加熱方法
JP7037839B2 (ja) 2018-10-11 2022-03-17 株式会社ニッシン マイクロ波加熱装置および加熱方法

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