WO2014119635A1 - Ink-jet recording device and recording method - Google Patents

Ink-jet recording device and recording method Download PDF

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Publication number
WO2014119635A1
WO2014119635A1 PCT/JP2014/052019 JP2014052019W WO2014119635A1 WO 2014119635 A1 WO2014119635 A1 WO 2014119635A1 JP 2014052019 W JP2014052019 W JP 2014052019W WO 2014119635 A1 WO2014119635 A1 WO 2014119635A1
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Prior art keywords
ink
recording
recording medium
recording head
light
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PCT/JP2014/052019
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French (fr)
Japanese (ja)
Inventor
加藤　茂
知己 井川
博徳 橋詰
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株式会社ミマキエンジニアリング
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Priority to CN201480006244.9A priority Critical patent/CN104955649A/en
Publication of WO2014119635A1 publication Critical patent/WO2014119635A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • 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
    • B41J11/0015—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 for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
    • 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
    • B41J11/0015—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 for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0024—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using conduction means, e.g. by using a heated platen
    • B41J11/00244—Means for heating the copy materials before or during printing

Definitions

  • the present invention relates to an ink jet recording apparatus and a recording method.
  • Patent Document 1 a medium driving roller of an ink jet printer is heated, and the medium is preheated by the driving roller and fed into a print zone, thereby promoting evaporation of an ink carrier and reducing medium distortion and ink bleeding. Is described.
  • the thermal efficiency is poor in the configuration in which the heating means is provided on the back surface of the recording medium as in the prior art.
  • the recording medium is thick, a large amount of power is required to sufficiently heat the recording surface of the recording medium.
  • it is necessary to provide a heating means in the whole lower part of a recording medium, and a lot of power consumption is similarly required.
  • the present invention has been made in view of the above problems, and has as its main object to provide a technique for suitably heating a recording medium in an ink jet recording apparatus.
  • an inkjet recording apparatus is an inkjet recording apparatus that includes a recording head and performs recording by discharging ink from the recording head to a recording medium, and includes a light emitting diode.
  • the light emitting diode emits light to the area on the recording medium where the recording head should eject the ink before the recording head ejects the ink to the area. It is characterized by heating.
  • Ink bleeding can be successfully suppressed by preheating the area on the recording medium before ink ejection.
  • the ink jet recording apparatus may include a carriage that moves relative to the recording medium, and both the recording head and the light emitting diode may be mounted on the carriage.
  • the irradiation area of the light emitting diode necessary for successfully irradiating the area where the recording head ejects ink can be reduced. Therefore, power saving can be achieved and costs can be reduced.
  • the ink ejected by the recording head may include a solvent, and further include a heater that heats the surface of the recording medium on which the ink is ejected. .
  • the recording medium can be heated by the heater in addition to the light emitting diode, and the recording surface of the recording medium can be sufficiently heated. Therefore, the ink droplets that have landed on the recording surface can be evaporated and dried immediately before spreading. Thereby, high recording quality can be ensured.
  • the ink ejected by the recording head is an ultraviolet curable ink that is cured by ultraviolet rays, and an ultraviolet irradiation unit that irradiates ultraviolet rays on a surface of the recording medium on which the ink is ejected. It may be further provided.
  • ultraviolet rays are immediately irradiated to ink droplets of ultraviolet curable ink that has landed on a recording medium. Therefore, unevenness may remain on the recording medium, resulting in a matte image quality.
  • the recording surface of the recording medium can be sufficiently heated by preheating the recording medium with the light emitting diode.
  • the viscosity of the ultraviolet curable ink discharged onto the recording medium can be improved, and smooth (glossy) image quality can be obtained.
  • a recording method is a recording method in which a recording head performs recording by discharging ink onto a recording medium, the recording medium absorbing light of a specific wavelength, and a light emitting diode
  • the recording head irradiates light of the specific wavelength before the recording head ejects the ink. It includes a preheating step of heating the region.
  • the light emitting diode irradiates the recording medium that absorbs light of a specific wavelength, and preheats the recording medium successfully by irradiating the light of the specific wavelength. Ink bleeding can be suppressed.
  • the present invention it is possible to successfully suppress ink bleeding by preheating the area of the recording medium before ink ejection. At this time, since the region is preheated by the light emitting diode, power saving can be achieved.
  • FIGS. 1A and 1B are diagrams schematically showing a schematic configuration of an ink jet recording apparatus according to Embodiment 1 of the present invention.
  • FIG. 1A shows a side view and
  • FIG. 1B shows a top view.
  • 2A and 2B are diagrams schematically showing a schematic configuration of an ink jet recording apparatus according to Embodiment 2 of the present invention, in which FIG. 2A shows a side view and FIG. 2B shows a top view.
  • FIGS. 1A and 1B are diagrams schematically showing a schematic configuration of an ink jet recording apparatus 1 according to Embodiment 1, FIG. 1A shows a side view, and FIG. 1B shows a top view.
  • the ink jet recording apparatus 1 is a flat bed machine that performs recording with the recording medium 5 fixed, and a platen 10 on which the recording medium 5 is placed, and the recording medium 5 on the paper surface. And a Y bar 20 that moves in the left direction (sub-scanning direction).
  • the Y bar 20 ejects the carriage 22 that moves in the main scanning direction orthogonal to the sub-scanning direction in the in-plane direction of the recording medium 5, the guide rail 21 for driving the carriage 22, and the ink 6 of the recording medium 5.
  • a pre-heater (heater) 25 and a post-heater (heater) 26 are provided.
  • the carriage 22 is mounted with a recording head 24 for discharging the ink 6 to the recording medium 5 and an IR-LED (light emitting diode) 23.
  • a recording head 24 for discharging the ink 6 to the recording medium 5
  • an IR-LED (light emitting diode) 23 is mounted with a recording head 24 for discharging the ink 6 to the recording medium 5 and an IR-LED (light emitting diode) 23.
  • the ink 6 ejected by the recording head 24 includes a solvent, and includes, for example, a solvent-based ink such as a solvent ink, a solvent-based ink containing an organic solvent as a solvent, and a latex ink as a solvent. It can be an aqueous ink or the like. These inks are dried and cured by volatilizing a solvent (water, organic solvent, etc.) contained in the ink. Further, the ink 6 may be an irradiation ultraviolet curable ink (for example, a solvent UV ink) that contains a solvent and is cured by being irradiated with ultraviolet rays. In this case, the ink jet recording apparatus 1 may further include ultraviolet irradiation means as in Embodiment 2 described later.
  • the IR-LED 23 irradiates the area where the recording head 24 should eject the ink 6 on the recording medium 5 with light before the recording head 24 ejects the ink 6. It is designed to preheat (preheating process).
  • the light emitted by the IR-LED 23 may be light having a wavelength that is absorbed by the recording medium 5 and is not particularly limited, but is preferably near-infrared having a wavelength of 700 nm to 2500 nm, more preferably 1500 nm to 2000 nm. More preferably, it is 1660 nm or more and 1750 nm or less. Near-infrared rays are preferable because energy rays do not pass through the inside of the recording medium 5 and only the surface can be heated. In this case, as the recording medium 5, for example, a material made of a resin can be suitably used.
  • the resin has a region that absorbs 50% or more of the irradiation energy within the above range, and can be efficiently preheated by irradiating light in the region. That is, it is sufficient that the IR-LED 23 emits light having a wavelength that is suitably absorbed by the resin.
  • the resin For example, but not limited to, HDPE (high density polyethylene), LDPE (low density polyethylene), PC (polycarbonate), PET (polyethylene terephthalate), PP (polypropylene), PS (polystyrene), PVC (polyethylene) (Vinyl chloride) absorbs light irradiation energy of 1660 nm or more and 1750 nm or less, generally about 70 to 90%. Therefore, when these resins are used as the recording medium 5, the IR-LED 23 emits light of 1660 nm or more and 1750 nm or less. It suffices if it comes to irradiate.
  • the IR-LED 23 only needs to emit light having a wavelength that is absorbed by the recording medium 5.
  • the light having a wavelength that the recording medium 5 absorbs refers to light having a wavelength that the recording medium 5 absorbs 50% or more of the irradiation energy. More preferably, the IR-LED 23 is configured to emit light having a wavelength that is most absorbed by the recording medium 5.
  • various light emitting diodes LEDs may be used as long as the recording medium 5 absorbs light having a wavelength that is absorbed.
  • a primer that absorbs the light irradiated by the IR-LED 23 may be applied to the recording medium 5 (application step).
  • the recording medium 5 can be suitably preheated by the light emitted from the IR-LED 23 regardless of the material of the recording medium 5.
  • the primer include, but are not limited to, nickel complex dyes, phthalocyanine dyes, diimonium dyes, and the like that absorb light having a wavelength of 600 nm to 1000 nm.
  • the recording medium 5 may contain a near infrared absorber or the like. Examples of the commercially available recording medium 5 containing a near-infrared absorber include Lumogen (registered trademark) IR manufactured by BASF.
  • the region is preheated by the light emitting diode (IR-LED 23)
  • the thermal efficiency is good, and since the light emitting diode starts quickly, only the target region can be preheated. Therefore, power saving can be achieved.
  • the IR-LED 23 and the recording head 24 are mounted on the carriage 22, the IR-LED 23 moves together with the recording head 24. Therefore, it is possible to reduce the irradiation area of the light emitting diode necessary for successfully irradiating the area before ink ejection. Therefore, power saving can be achieved and costs can be reduced.
  • the recording surface of the recording medium 5 can be sufficiently heated. Therefore, the ink droplets that have landed on the recording surface can be evaporated and dried immediately before spreading. Thereby, high recording quality can be ensured.
  • the preheater 25 and the postheater 26 may be omitted.
  • methods such as radiation heating, heat conduction heating, and microwave heating can be used as appropriate.
  • the ink jet recording apparatus 1 may be a roll machine that performs printing while transporting a roll-shaped medium.
  • the Y bar 20 does not move and the recording medium 5 is conveyed.
  • the recording head 24 only needs to move in the main scanning direction and the sub-scanning direction relative to the recording medium 5.
  • the IR-LED 23 may be fixed to the Y bar 20 as in Embodiment 2 described later.
  • FIGS. 2A and 2B are diagrams schematically illustrating a schematic configuration of the ink jet recording apparatus 2 according to the second embodiment.
  • FIG. 2A is a side view and FIG. 2B is a top view.
  • the ink jet recording apparatus 2 is a flatbed machine that performs recording with the recording medium 5 fixed, and includes a platen 10 on which the recording medium 5 is placed, and the recording medium 5 on the paper surface. And a Y bar 30 that moves in the left direction (sub-scanning direction).
  • the Y bar 30 includes a carriage 32 that moves in the main scanning direction orthogonal to the sub-scanning direction in the in-plane direction of the recording medium 5, a guide rail 31 for driving the carriage 32, an IR-LED (light emitting diode) 35, and the like.
  • the recording medium 5 includes an ultraviolet fluorescent tube (ultraviolet irradiation means) 36 that irradiates ultraviolet light onto a region where the UV ink 7 is ejected.
  • the carriage 32 is mounted with a recording head 33 that discharges UV ink (ink) 7 onto the recording medium 5 and a UV LED (ultraviolet irradiation means) 34 disposed on the side surface of the carriage 32.
  • the UV ink 7 ejected by the recording head 24 is an ultraviolet curable ink (for example, UV ink, solvent UV ink, etc.) that is cured by irradiating ultraviolet rays.
  • the IR-LED 35 is a region on the recording medium 5 where the recording head 33 should eject the UV ink 7 before the recording head 33 ejects the UV ink 7 to the region.
  • the region is preheated by irradiating light (preheating step).
  • the IR-LED 35 is fixed not to the carriage 32 but to the Y bar 30. Even if comprised in this way, the objective of this invention can be achieved.
  • an ultraviolet irradiation means (UVLED 34 and ultraviolet fluorescent tube 36) for curing the UV ink 7 is provided. Since the UV LED 34 is mounted on the carriage 32 together with the recording head 33, the UV ink 7 ejected onto the recording medium 5 can be successfully irradiated with ultraviolet rays. In place of the ultraviolet fluorescent tube 36, another UV LED may be arranged.
  • ultraviolet rays are immediately irradiated to ink droplets of ultraviolet curable ink that has landed on a recording medium. Therefore, unevenness may remain on the recording medium, resulting in a matte image quality.
  • the recording surface of the recording medium 5 can be sufficiently heated by preheating the recording medium 5 with the IR-LED 35. Thereby, the viscosity of the ultraviolet curable ink discharged to the recording medium 5 can be improved, and smooth (glossy) image quality can be obtained.
  • a heater such as a preheater or a postheater may be further provided as in the first embodiment.
  • the ink jet recording apparatus 2 may be a roll machine that performs printing while conveying a roll-shaped medium.
  • the Y bar 30 does not move and the recording medium 5 is conveyed. That is, in the present embodiment, the recording head 33 only needs to move in the main scanning direction and the sub-scanning direction relative to the recording medium 5.
  • the IR-LED 35 may be mounted on the carriage 32 as in the first embodiment.
  • the ink jet recording apparatus 1 is an ink jet recording apparatus that includes a recording head 24 and performs recording by discharging ink 6 from the recording head 24 to the recording medium 5, and includes an IR-LED 23.
  • the LED 23 heats the area on the recording medium 5 by irradiating the area where the recording head 24 should eject the ink 6 with light before the recording head 24 ejects the ink 6 onto the area. It is like that.
  • the inkjet recording apparatus 2 is an inkjet recording apparatus that includes a recording head 33 and performs recording by discharging UV ink 7 from the recording head 33 to the recording medium 5, and includes an IR-LED 35.
  • the IR-LED 35 irradiates light onto the area on the recording medium 5 where the recording head 33 should eject the UV ink 7 before the recording head 33 ejects the UV ink 7 onto the area. The area is heated.
  • the thermal efficiency is good, and since the start-up is fast, only the target region can be preheated. Therefore, power saving can be achieved.
  • the inkjet recording apparatus 1 includes a carriage 22 that moves relative to the recording medium 5, and both the recording head 24 and the IR-LED 23 are mounted on the carriage 22.
  • the IR-LED 23 moves together with the recording head 24, the irradiation area of the IR-LED 23 necessary for the recording head 24 to successfully irradiate the area where the ink 6 is ejected can be reduced. . Therefore, power saving can be achieved and costs can be reduced.
  • the ink ejected by the recording head 24 contains a solvent, and the preheater 25 and the postheater 26 that heat the surface of the recording medium 5 on which the ink 6 is ejected are further provided. I have.
  • the recording medium 5 can be heated by the pre-heater 25 and the post-heater 26 in addition to the IR-LED 23, and the recording surface of the recording medium 5 can be sufficiently heated. Therefore, the ink droplets that have landed on the recording surface can be evaporated and dried immediately before spreading. Thereby, high recording quality can be ensured.
  • the UV ink 7 ejected by the recording head 33 is an ultraviolet curable ink that is cured by ultraviolet rays, and the ultraviolet rays on the surface of the recording medium 5 on which the UV ink 7 is ejected are disposed on the surface.
  • a UVLED 34 and an ultraviolet fluorescent tube 36 are further provided with a UVLED 34 and an ultraviolet fluorescent tube 36.
  • ultraviolet rays are immediately irradiated to ink droplets of ultraviolet curable ink that has landed on a recording medium. Therefore, unevenness may remain on the recording medium, resulting in a matte image quality.
  • the recording surface of the recording medium 5 can be sufficiently heated by preheating the recording medium 5 with the IR-LED 35. Thereby, the viscosity of the UV ink 7 discharged to the recording medium 5 can be improved, and smooth (glossy) image quality can be obtained.
  • the recording method according to the first embodiment is a recording method in which recording is performed by the recording head 24 ejecting ink 6 to the recording medium 5, and the recording medium 5 absorbs light of a specific wavelength.
  • the IR-LED 23 irradiates the area on the recording medium 5 where the recording head 24 should eject the ink 6 before the recording head 24 ejects the ink 6 onto the area. This includes a preheating step of heating the region.
  • the recording method according to the second embodiment is a recording method in which recording is performed by the recording head 33 ejecting the UV ink 7 onto the recording medium 5, and the recording medium 5 absorbs light of a specific wavelength.
  • the IR-LED 35 is configured so that the recording head 33 on the recording medium 5 has the specific area before the recording head 33 ejects the UV ink 7 to the area where the recording head 33 should eject the UV ink 7.
  • a preheating step of heating the region by irradiating light of a wavelength is included.
  • the IR-LED 23 or 35 irradiates the light with the specific wavelength to the recording medium 5 adapted to absorb the light with the specific wavelength, so that the recording medium 5 can be successfully completed. Can be preheated to suppress bleeding of the ink 6 or the UV ink 7.
  • the present invention can be used in the manufacturing field of printing apparatuses, the manufacturing field of printed matter, and the like.

Abstract

The present invention addresses the problem of providing a configuration for appropriately heating a recording medium in an ink-jet recording device. As a means for solving the problem, an ink-jet recording device (1) is configured such that an IR-LED (23) applies light to a region to which ink (6) is to be discharged on a recording medium (5) before discharging the ink (6) to the region to thereby heat the region.

Description

インクジェット記録装置および記録方法Ink jet recording apparatus and recording method
　本発明は、インクジェット記録装置および記録方法に関する。 The present invention relates to an ink jet recording apparatus and a recording method.
　特許文献１には、インクジェットプリンタの媒体駆動ローラを加熱し、該駆動ローラで媒体を予熱して印刷ゾーンに送り込むことにより、インクのキャリアの蒸発を促進し、媒体の歪、インクの滲みを減少させることが記載されている。 In Patent Document 1, a medium driving roller of an ink jet printer is heated, and the medium is preheated by the driving roller and fed into a print zone, thereby promoting evaporation of an ink carrier and reducing medium distortion and ink bleeding. Is described.
特開平６－２１０８４６号公報（１９９４年８月２日公開）Japanese Patent Laid-Open No. 6-210846 (published on August 2, 1994)
　しかし、従来技術のように、記録媒体の裏面に加熱手段を設ける構成では、熱効率が悪い。特に、記録媒体が厚い場合には、記録媒体の記録面まで十分に加熱するために、多大な消費電力が必要となる。また、フラットベッド機では、記録媒体の下部全体に加熱手段を設ける必要があり、同様に、多大な消費電力が必要となる。 However, the thermal efficiency is poor in the configuration in which the heating means is provided on the back surface of the recording medium as in the prior art. In particular, when the recording medium is thick, a large amount of power is required to sufficiently heat the recording surface of the recording medium. Moreover, in a flat bed machine, it is necessary to provide a heating means in the whole lower part of a recording medium, and a lot of power consumption is similarly required.
　本発明は、上記課題に鑑みてなされたものであり、インクジェット記録装置において、記録媒体を好適に加熱するための技術を提供することを主たる目的とする。 The present invention has been made in view of the above problems, and has as its main object to provide a technique for suitably heating a recording medium in an ink jet recording apparatus.
　上記の課題を解決するために、本発明に係るインクジェット記録装置は、記録ヘッドを備え、該記録ヘッドから記録媒体へインクを吐出することにより記録を行うインクジェット記録装置であって、発光ダイオードを備え、該発光ダイオードが、該記録媒体上における該記録ヘッドが該インクを吐出すべき領域に対して、当該領域に該記録ヘッドが該インクを吐出する前に、光を照射することによって、当該領域を加熱するようになっていることを特徴としている。 In order to solve the above-described problems, an inkjet recording apparatus according to the present invention is an inkjet recording apparatus that includes a recording head and performs recording by discharging ink from the recording head to a recording medium, and includes a light emitting diode. The light emitting diode emits light to the area on the recording medium where the recording head should eject the ink before the recording head ejects the ink to the area. It is characterized by heating.
　記録媒体におけるインク吐出前の領域を予熱することにより、インクの滲みを首尾よく抑制することができる。 Ink bleeding can be successfully suppressed by preheating the area on the recording medium before ink ejection.
　ここで、上記の構成によれば、発光ダイオードによって上記領域を予熱するため、熱効率が良く、また、起動が速いため目的の領域のみを予熱することができる。よって、省電力を達成することができる。 Here, according to the above configuration, since the region is preheated by the light emitting diode, only the target region can be preheated because of high thermal efficiency and fast start-up. Therefore, power saving can be achieved.
　上記インクジェット記録装置は、上記記録媒体に対して相対的に移動するキャリッジを備えており、上記記録ヘッドおよび上記発光ダイオードがともに該キャリッジに搭載されているものであってもよい。 The ink jet recording apparatus may include a carriage that moves relative to the recording medium, and both the recording head and the light emitting diode may be mounted on the carriage.
　上記の構成によれば、発光ダイオードが記録ヘッドとともに移動するため、記録ヘッドがインクを吐出する領域を首尾よく照射するために必要な発光ダイオードの照射領域を小さくすることができる。そのため、より省電力を達成することができる上、コストを低減することができる。 According to the above configuration, since the light emitting diode moves together with the recording head, the irradiation area of the light emitting diode necessary for successfully irradiating the area where the recording head ejects ink can be reduced. Therefore, power saving can be achieved and costs can be reduced.
　上記インクジェット記録装置では、上記記録ヘッドが吐出する上記インクは、溶媒を含
んでおり、上記記録媒体における上記インクが吐出される側の面を加熱するヒータをさらに備えているものであってもよい。 In the ink jet recording apparatus, the ink ejected by the recording head may include a solvent, and further include a heater that heats the surface of the recording medium on which the ink is ejected. .
　上記の構成によれば、発光ダイオードに加えて、ヒータでも記録媒体を加熱することができ、記録媒体の記録面を十分に加熱することができる。そのため、記録面に着弾したインク滴が滲み広がる前に、即座に揮発乾燥させることができる。これにより、高い記録品質を確保することができる。 According to the above configuration, the recording medium can be heated by the heater in addition to the light emitting diode, and the recording surface of the recording medium can be sufficiently heated. Therefore, the ink droplets that have landed on the recording surface can be evaporated and dried immediately before spreading. Thereby, high recording quality can be ensured.
　上記インクジェット記録装置では、上記記録ヘッドが吐出する上記インクは、紫外線によって硬化する紫外線硬化型インクであり、上記記録媒体における上記インクが吐出される側の面に、紫外線を照射する紫外線照射手段をさらに備えているものであってもよい。 In the inkjet recording apparatus, the ink ejected by the recording head is an ultraviolet curable ink that is cured by ultraviolet rays, and an ultraviolet irradiation unit that irradiates ultraviolet rays on a surface of the recording medium on which the ink is ejected. It may be further provided.
　一般に、記録媒体に着弾した紫外線硬化型インクのインク滴には、即座に紫外線が照射される。そのため、記録媒体上に凹凸が残りマット調の画質になる場合がある。 Generally, ultraviolet rays are immediately irradiated to ink droplets of ultraviolet curable ink that has landed on a recording medium. Therefore, unevenness may remain on the recording medium, resulting in a matte image quality.
　ここで、上記の構成によれば、紫外線硬化型インクを用いる場合に、発光ダイオードによって記録媒体を予熱しておくことによって、記録媒体の記録面を十分に加熱することができる。これにより、記録媒体に吐出された紫外線硬化型インクの粘度を向上させることができ、平滑な（グロス調の）画質品質を得ることができる。 Here, according to the above configuration, when the ultraviolet curable ink is used, the recording surface of the recording medium can be sufficiently heated by preheating the recording medium with the light emitting diode. As a result, the viscosity of the ultraviolet curable ink discharged onto the recording medium can be improved, and smooth (glossy) image quality can be obtained.
　本発明に係る記録方法は、記録ヘッドが記録媒体へインクを吐出することにより記録を行う記録方法であって、該記録媒体は、特定の波長の光を吸収するようになっており、発光ダイオードが、該記録媒体上における該記録ヘッドが該インクを吐出すべき領域に対して、当該領域に該記録ヘッドが該インクを吐出する前に、該特定の波長の光を照射することによって、当該領域を加熱する予熱工程を包含することを特徴としている。 A recording method according to the present invention is a recording method in which a recording head performs recording by discharging ink onto a recording medium, the recording medium absorbing light of a specific wavelength, and a light emitting diode However, when the recording head on the recording medium is to eject the ink, the recording head irradiates light of the specific wavelength before the recording head ejects the ink. It includes a preheating step of heating the region.
　上記の構成によれば、特定の波長の光を吸収するようになっている記録媒体に対して発光ダイオードが、当該特定の波長の光を照射することにより、首尾よく記録媒体を予熱して、インクの滲みを抑制することができる。 According to the above configuration, the light emitting diode irradiates the recording medium that absorbs light of a specific wavelength, and preheats the recording medium successfully by irradiating the light of the specific wavelength. Ink bleeding can be suppressed.
　そして、上記の構成によれば、発光ダイオードによって上記領域を予熱するため、熱効率が良く、また、起動が速いため目的の領域のみを予熱することができる。よって、省電力を達成することができる。 And according to said structure, since the said area | region is pre-heated with a light emitting diode, since thermal efficiency is good and starting is quick, only the target area | region can be pre-heated. Therefore, power saving can be achieved.
　本発明によれば、記録媒体におけるインク吐出前の領域を予熱することにより、インクの滲みを首尾よく抑制することができる。このとき、発光ダイオードによって上記領域を予熱するため、省電力を達成することができる。 According to the present invention, it is possible to successfully suppress ink bleeding by preheating the area of the recording medium before ink ejection. At this time, since the region is preheated by the light emitting diode, power saving can be achieved.
図１Ａおよび図１Ｂは、本発明の実施形態１に係るインクジェット記録装置の概略構成を模式的に示す図であり、図１Ａは側面図を示し、図１Ｂは上面図を示す。1A and 1B are diagrams schematically showing a schematic configuration of an ink jet recording apparatus according to Embodiment 1 of the present invention. FIG. 1A shows a side view and FIG. 1B shows a top view. 図２Ａおよび図２Ｂは、本発明の実施形態２に係るインクジェット記録装置の概略構成を模式的に示す図であり、図２Ａは側面図を示し、図２Ｂは上面図を示す。2A and 2B are diagrams schematically showing a schematic configuration of an ink jet recording apparatus according to Embodiment 2 of the present invention, in which FIG. 2A shows a side view and FIG. 2B shows a top view.
　〔実施形態１〕
　本発明の一実施形態（実施形態１）について、図１Ａおよび図１Ｂに基づいて説明すれば、以下のとおりである。図１Ａおよび図１Ｂは、実施形態１に係るインクジェット記録装置１の概略構成を模式的に示す図であり、図１Ａは側面図を示し、図１Ｂは上面図を示す。 [Embodiment 1]
An embodiment (Embodiment 1) of the present invention will be described below with reference to FIGS. 1A and 1B. 1A and 1B are diagrams schematically showing a schematic configuration of an ink jet recording apparatus 1 according to Embodiment 1, FIG. 1A shows a side view, and FIG. 1B shows a top view.
　図１Ａおよび図１Ｂに示すように、インクジェット記録装置１は、記録媒体５を固定した状態で記録を行うフラットベッド機であり、記録媒体５を載置するプラテン１０と、記録媒体５上を紙面左方向（副走査方向）に移動するＹバー２０とを備えている。 As shown in FIG. 1A and FIG. 1B, the ink jet recording apparatus 1 is a flat bed machine that performs recording with the recording medium 5 fixed, and a platen 10 on which the recording medium 5 is placed, and the recording medium 5 on the paper surface. And a Y bar 20 that moves in the left direction (sub-scanning direction).
　Ｙバー２０は、記録媒体５の面内方向において副走査方向に直交する主走査方向に移動するキャリッジ２２と、キャリッジ２２を駆動するためのガイドレール２１と、記録媒体５のインク６が吐出される側の面（記録面）を加熱するプリヒータ（ヒータ）２５およびポストヒータ（ヒータ）２６とを備えている。 The Y bar 20 ejects the carriage 22 that moves in the main scanning direction orthogonal to the sub-scanning direction in the in-plane direction of the recording medium 5, the guide rail 21 for driving the carriage 22, and the ink 6 of the recording medium 5. A pre-heater (heater) 25 and a post-heater (heater) 26 are provided.
　キャリッジ２２には、インク６を記録媒体５に吐出する記録ヘッド２４と、ＩＲ－ＬＥＤ（発光ダイオード）２３とが搭載されている。 The carriage 22 is mounted with a recording head 24 for discharging the ink 6 to the recording medium 5 and an IR-LED (light emitting diode) 23.
　本実施形態において、記録ヘッド２４が吐出するインク６は、溶媒を含んでおり、例えば、ソルベントインク等の、有機溶剤を溶媒として含有する溶剤系インク、ラテックスインク等の、水を溶媒として含有する水性インク等であり得る。これらのインクは、インクに含まれる溶媒（水、有機溶剤等）を揮発させることによって乾燥および硬化する。また、インク６は、溶媒を含み、紫外線を照射することによって硬化する照射紫外線硬化型のインク（例えば、ソルベントＵＶインク）であってもよい。この場合には、インクジェット記録装置１は、後述する実施形態２のように、紫外線照射手段をさらに備え得る。 In the present embodiment, the ink 6 ejected by the recording head 24 includes a solvent, and includes, for example, a solvent-based ink such as a solvent ink, a solvent-based ink containing an organic solvent as a solvent, and a latex ink as a solvent. It can be an aqueous ink or the like. These inks are dried and cured by volatilizing a solvent (water, organic solvent, etc.) contained in the ink. Further, the ink 6 may be an irradiation ultraviolet curable ink (for example, a solvent UV ink) that contains a solvent and is cured by being irradiated with ultraviolet rays. In this case, the ink jet recording apparatus 1 may further include ultraviolet irradiation means as in Embodiment 2 described later.
　ＩＲ－ＬＥＤ２３は、記録媒体５上における記録ヘッド２４がインク６を吐出すべき領域に対して、当該領域に記録ヘッド２４がインク６を吐出する前に、光を照射することによって、当該領域を予熱するようになっている（予熱工程）。 The IR-LED 23 irradiates the area where the recording head 24 should eject the ink 6 on the recording medium 5 with light before the recording head 24 ejects the ink 6. It is designed to preheat (preheating process).
　ＩＲ－ＬＥＤ２３が照射する光は、記録媒体５が吸収する波長の光であればよく、特に限定されないが、波長が７００ｎｍ以上２５００ｎｍ以下の近赤外線であることがより好ましく、１５００ｎｍ以上２０００ｎｍ以下であることがさらに好ましく、１６６０ｎｍ以上１７５０ｎｍ以下であることが特に好ましい。近赤外線は、エネルギー線が記録媒体５の内部まで透過せず、表面だけを加熱することができるため好ましい。この場合、記録媒体５としては、例えば、樹脂からなるものを好適に用いることができる。樹脂は、上記の範囲内で、照射エネルギーの５０％以上を吸収する領域を有しており、当該領域の光を照射することによって効率的に予熱することができる。すなわち、ＩＲ－ＬＥＤ２３は、当該樹脂が好適に吸収する波長の光を照射するようになっていればよい。例えば、これらに限定されるものではないが、ＨＤＰＥ（高密度ポリエチレン）、ＬＤＰＥ（低密度ポリエチレン）、ＰＣ（ポリカーボネート）、ＰＥＴ（ポリエチレンテレフタレート）、ＰＰ（ポリプロピレン）、ＰＳ（ポリスチレン）、ＰＶＣ（ポリ塩化ビニル）は、１６６０ｎｍ以上１７５０ｎｍ以下の光の照射エネルギーを、概して７０～９０％程度吸収するため、記録媒体５としてこれらの樹脂を用いる場合には、ＩＲ－ＬＥＤ２３は、１６６０ｎｍ以上１７５０ｎｍ以下の光を照射するようになっていればよい。 The light emitted by the IR-LED 23 may be light having a wavelength that is absorbed by the recording medium 5 and is not particularly limited, but is preferably near-infrared having a wavelength of 700 nm to 2500 nm, more preferably 1500 nm to 2000 nm. More preferably, it is 1660 nm or more and 1750 nm or less. Near-infrared rays are preferable because energy rays do not pass through the inside of the recording medium 5 and only the surface can be heated. In this case, as the recording medium 5, for example, a material made of a resin can be suitably used. The resin has a region that absorbs 50% or more of the irradiation energy within the above range, and can be efficiently preheated by irradiating light in the region. That is, it is sufficient that the IR-LED 23 emits light having a wavelength that is suitably absorbed by the resin. For example, but not limited to, HDPE (high density polyethylene), LDPE (low density polyethylene), PC (polycarbonate), PET (polyethylene terephthalate), PP (polypropylene), PS (polystyrene), PVC (polyethylene) (Vinyl chloride) absorbs light irradiation energy of 1660 nm or more and 1750 nm or less, generally about 70 to 90%. Therefore, when these resins are used as the recording medium 5, the IR-LED 23 emits light of 1660 nm or more and 1750 nm or less. It suffices if it comes to irradiate.
　いずれにせよ、ＩＲ－ＬＥＤ２３は、記録媒体５が吸収する波長の光を照射するようになっていればよい。なお、本明細書において、記録媒体５が吸収する波長の光とは、記録媒体５が、照射エネルギーの５０％以上を吸収する波長の光を指す。より好ましくは、ＩＲ－ＬＥＤ２３は、記録媒体５が最も吸収する波長の光を照射するように構成される。また、ＩＲ－ＬＥＤ２３の代わりに、記録媒体５が吸収する波長の光を照射するものであれば、各種の発光ダイオード（ＬＥＤ）を用いてもよい。 In any case, the IR-LED 23 only needs to emit light having a wavelength that is absorbed by the recording medium 5. In this specification, the light having a wavelength that the recording medium 5 absorbs refers to light having a wavelength that the recording medium 5 absorbs 50% or more of the irradiation energy. More preferably, the IR-LED 23 is configured to emit light having a wavelength that is most absorbed by the recording medium 5. Instead of the IR-LED 23, various light emitting diodes (LEDs) may be used as long as the recording medium 5 absorbs light having a wavelength that is absorbed.
　また、記録媒体５に対して記録を行う前に、ＩＲ－ＬＥＤ２３が照射する光を吸収するプライマーを記録媒体５に塗布するようにしてもよい（塗布工程）。これにより、記録媒体５の素材によらず、ＩＲ－ＬＥＤ２３が照射する光によって、記録媒体５を好適に予熱することができる。プライマーとしては、これらに限定されるものではないが、例えば、６００ｎｍ以上１０００ｎｍ以下の波長の光を吸収する、ニッケル錯体系色素、フタロシアニン系色素、ジイモニウム系色素等を用いることができる。また、記録媒体５に、近赤外線吸収剤等を含有させてもよい。近赤外線吸収剤を含有する市販の記録媒体５としては、例えば、ＢＡＳＦ社製のＬｕｍｏｇｅｎ（登録商標）ＩＲ等がある。 Further, before recording on the recording medium 5, a primer that absorbs the light irradiated by the IR-LED 23 may be applied to the recording medium 5 (application step). Thereby, the recording medium 5 can be suitably preheated by the light emitted from the IR-LED 23 regardless of the material of the recording medium 5. Examples of the primer include, but are not limited to, nickel complex dyes, phthalocyanine dyes, diimonium dyes, and the like that absorb light having a wavelength of 600 nm to 1000 nm. Further, the recording medium 5 may contain a near infrared absorber or the like. Examples of the commercially available recording medium 5 containing a near-infrared absorber include Lumogen (registered trademark) IR manufactured by BASF.
　このように、記録媒体５におけるインク吐出前の領域を予熱することにより、インク６の滲みを首尾よく抑制することができる。 Thus, by preheating the area of the recording medium 5 before ink ejection, it is possible to successfully suppress the bleeding of the ink 6.
　ここで、本実施形態では、発光ダイオード（ＩＲ－ＬＥＤ２３）によって上記領域を予熱するため、熱効率が良く、また、発光ダイオードは起動が速いため目的の領域のみを予熱することができる。よって、省電力を達成することができる。 Here, in the present embodiment, since the region is preheated by the light emitting diode (IR-LED 23), the thermal efficiency is good, and since the light emitting diode starts quickly, only the target region can be preheated. Therefore, power saving can be achieved.
　また、本実施形態では、キャリッジ２２にＩＲ－ＬＥＤ２３および記録ヘッド２４が共に搭載されているため、ＩＲ－ＬＥＤ２３が記録ヘッド２４とともに移動する。そのため、インク吐出前の領域を首尾よく照射するために必要な発光ダイオードの照射領域を小さくすることができる。そのため、より省電力を達成することができる上、コストを低減することができる。 In this embodiment, since the IR-LED 23 and the recording head 24 are mounted on the carriage 22, the IR-LED 23 moves together with the recording head 24. Therefore, it is possible to reduce the irradiation area of the light emitting diode necessary for successfully irradiating the area before ink ejection. Therefore, power saving can be achieved and costs can be reduced.
　また、プリヒータ２５およびポストヒータ２６を備えることによって、記録媒体５の記録面を十分に加熱することができる。そのため、記録面に着弾したインク滴が滲み広がる前に、即座に揮発乾燥させることができる。これにより、高い記録品質を確保することができる。但し、プリヒータ２５およびポストヒータ２６は省略してもよい。プリヒータ２５およびポストヒータ２６は、放射加熱、熱伝導加熱、マイクロ波加熱等の方法を適宜使用できる。 Further, by providing the pre-heater 25 and the post-heater 26, the recording surface of the recording medium 5 can be sufficiently heated. Therefore, the ink droplets that have landed on the recording surface can be evaporated and dried immediately before spreading. Thereby, high recording quality can be ensured. However, the preheater 25 and the postheater 26 may be omitted. For the preheater 25 and the postheater 26, methods such as radiation heating, heat conduction heating, and microwave heating can be used as appropriate.
　なお、インクジェット記録装置１は、ロール状の媒体を搬送しながら印刷を行うロール機であってもよい。この場合、Ｙバー２０は、移動せず、記録媒体５が搬送されることになる。すなわち、本実施形態では、記録ヘッド２４は、記録媒体５に対して相対的に主走査方向および副走査方向に移動するようになっていればよい。また、ＩＲ－ＬＥＤ２３を、後述する実施形態２のように、Ｙバー２０に固定してもよい。 The ink jet recording apparatus 1 may be a roll machine that performs printing while transporting a roll-shaped medium. In this case, the Y bar 20 does not move and the recording medium 5 is conveyed. In other words, in the present embodiment, the recording head 24 only needs to move in the main scanning direction and the sub-scanning direction relative to the recording medium 5. Further, the IR-LED 23 may be fixed to the Y bar 20 as in Embodiment 2 described later.
　〔実施形態２〕
　本発明の他の実施形態（実施形態２）について、図２Ａおよび図２Ｂに基づいて説明すれば、以下のとおりである。なお、説明の便宜上、前記実施形態にて説明した図面と同じ機能を有する部材については、同じ符号を付記し、その説明を省略する。図２Ａおよび図２Ｂは、実施形態２に係るインクジェット記録装置２の概略構成を模式的に示す図であり、図２Ａは側面図を示し、図２Ｂは上面図を示す。 [Embodiment 2]
Another embodiment (Embodiment 2) of the present invention will be described below with reference to FIGS. 2A and 2B. For convenience of explanation, members having the same functions as those in the drawings described in the embodiment are given the same reference numerals, and descriptions thereof are omitted. 2A and 2B are diagrams schematically illustrating a schematic configuration of the ink jet recording apparatus 2 according to the second embodiment. FIG. 2A is a side view and FIG. 2B is a top view.
　図２Ａおよび図２Ｂに示すように、インクジェット記録装置２は、記録媒体５を固定した状態で記録を行うフラットベッド機であり、記録媒体５を載置するプラテン１０と、記録媒体５上を紙面左方向（副走査方向）に移動するＹバー３０とを備えている。 2A and 2B, the ink jet recording apparatus 2 is a flatbed machine that performs recording with the recording medium 5 fixed, and includes a platen 10 on which the recording medium 5 is placed, and the recording medium 5 on the paper surface. And a Y bar 30 that moves in the left direction (sub-scanning direction).
　Ｙバー３０は、記録媒体５の面内方向において副走査方向に直交する主走査方向に移動するキャリッジ３２と、キャリッジ３２を駆動するためのガイドレール３１と、ＩＲ－ＬＥＤ（発光ダイオード）３５と、記録媒体５におけるＵＶインク７が吐出された領域に紫外線を照射する紫外線蛍光管（紫外線照射手段）３６とを備えている。 The Y bar 30 includes a carriage 32 that moves in the main scanning direction orthogonal to the sub-scanning direction in the in-plane direction of the recording medium 5, a guide rail 31 for driving the carriage 32, an IR-LED (light emitting diode) 35, and the like. The recording medium 5 includes an ultraviolet fluorescent tube (ultraviolet irradiation means) 36 that irradiates ultraviolet light onto a region where the UV ink 7 is ejected.
　キャリッジ３２には、ＵＶインク（インク）７を記録媒体５に吐出する記録ヘッド３３と、キャリッジ３２の側面に配置されたＵＶＬＥＤ（紫外線照射手段）３４とが搭載されている。本実施形態において、記録ヘッド２４が吐出するＵＶインク７は、紫外線を照射することによって硬化する紫外線硬化型のインク（例えば、ＵＶインク、ソルベントＵＶインク等）である。 The carriage 32 is mounted with a recording head 33 that discharges UV ink (ink) 7 onto the recording medium 5 and a UV LED (ultraviolet irradiation means) 34 disposed on the side surface of the carriage 32. In the present embodiment, the UV ink 7 ejected by the recording head 24 is an ultraviolet curable ink (for example, UV ink, solvent UV ink, etc.) that is cured by irradiating ultraviolet rays.
　ＩＲ－ＬＥＤ３５は、実施形態１におけるＩＲ－ＬＥＤ２３と同様、記録媒体５上における記録ヘッド３３がＵＶインク７を吐出すべき領域に対して、当該領域に記録ヘッド３３がＵＶインク７を吐出する前に、光を照射することによって、当該領域を予熱するようになっている（予熱工程）。ただし、ＩＲ－ＬＥＤ３５は、実施形態１におけるＩＲ－ＬＥＤ２３とは異なり、キャリッジ３２ではなく、Ｙバー３０に固定されている。このように構成しても、本発明の目的を達成することができる。 As with the IR-LED 23 in the first embodiment, the IR-LED 35 is a region on the recording medium 5 where the recording head 33 should eject the UV ink 7 before the recording head 33 ejects the UV ink 7 to the region. In addition, the region is preheated by irradiating light (preheating step). However, unlike the IR-LED 23 in the first embodiment, the IR-LED 35 is fixed not to the carriage 32 but to the Y bar 30. Even if comprised in this way, the objective of this invention can be achieved.
　ＩＲ－ＬＥＤ３５が照射する光および記録媒体５については、実施形態１と同様であるため、説明を省略する。 Since the light emitted from the IR-LED 35 and the recording medium 5 are the same as those in the first embodiment, the description thereof is omitted.
　また、本実施形態では、ＵＶインク７を硬化させるための紫外線照射手段（ＵＶＬＥＤ３４および紫外線蛍光管３６）を備えている。ＵＶＬＥＤ３４は、記録ヘッド３３とともにキャリッジ３２に搭載されているため、記録媒体５に吐出されたＵＶインク７に対して紫外線を首尾よく照射することができる。なお、紫外線蛍光管３６の代わりに、別のＵＶＬＥＤを配置してもよい。 Further, in this embodiment, an ultraviolet irradiation means (UVLED 34 and ultraviolet fluorescent tube 36) for curing the UV ink 7 is provided. Since the UV LED 34 is mounted on the carriage 32 together with the recording head 33, the UV ink 7 ejected onto the recording medium 5 can be successfully irradiated with ultraviolet rays. In place of the ultraviolet fluorescent tube 36, another UV LED may be arranged.
　一般に、記録媒体に着弾した紫外線硬化型インクのインク滴には、即座に紫外線が照射される。そのため、記録媒体上に凹凸が残りマット調の画質になる場合がある。 Generally, ultraviolet rays are immediately irradiated to ink droplets of ultraviolet curable ink that has landed on a recording medium. Therefore, unevenness may remain on the recording medium, resulting in a matte image quality.
　ここで、本実施形態では、ＩＲ－ＬＥＤ３５によって記録媒体５を予熱しておくことによって、記録媒体５の記録面を十分に加熱することができる。これにより、記録媒体５に吐出された紫外線硬化型インクの粘度を向上させることができ、平滑な（グロス調の）画質品質を得ることができる。 Here, in this embodiment, the recording surface of the recording medium 5 can be sufficiently heated by preheating the recording medium 5 with the IR-LED 35. Thereby, the viscosity of the ultraviolet curable ink discharged to the recording medium 5 can be improved, and smooth (glossy) image quality can be obtained.
　また、必要に応じて、実施形態１のように、プリヒータ、ポストヒータ等のヒータをさらに設けてもよい。また、インクジェット記録装置２は、ロール状の媒体を搬送しながら印刷を行うロール機であってもよい。この場合、Ｙバー３０は、移動せず、記録媒体５が搬送されることになる。すなわち、本実施形態では、記録ヘッド３３は、記録媒体５に対して相対的に主走査方向および副走査方向に移動するようになっていればよい。また、ＩＲ－ＬＥＤ３５を、実施形態１のように、キャリッジ３２に搭載してもよい。 Further, if necessary, a heater such as a preheater or a postheater may be further provided as in the first embodiment. The ink jet recording apparatus 2 may be a roll machine that performs printing while conveying a roll-shaped medium. In this case, the Y bar 30 does not move and the recording medium 5 is conveyed. That is, in the present embodiment, the recording head 33 only needs to move in the main scanning direction and the sub-scanning direction relative to the recording medium 5. Further, the IR-LED 35 may be mounted on the carriage 32 as in the first embodiment.
　〔付記事項〕
　実施形態１に係るインクジェット記録装置１は、記録ヘッド２４を備え、記録ヘッド２４から記録媒体５へインク６を吐出することにより記録を行うインクジェット記録装置であって、ＩＲ－ＬＥＤ２３を備え、ＩＲ－ＬＥＤ２３が、記録媒体５上における記録ヘッド２４がインク６を吐出すべき領域に対して、当該領域に記録ヘッド２４がインク６を吐出する前に、光を照射することによって、当該領域を加熱するようになっている。 [Additional Notes]
The ink jet recording apparatus 1 according to the first embodiment is an ink jet recording apparatus that includes a recording head 24 and performs recording by discharging ink 6 from the recording head 24 to the recording medium 5, and includes an IR-LED 23. The LED 23 heats the area on the recording medium 5 by irradiating the area where the recording head 24 should eject the ink 6 with light before the recording head 24 ejects the ink 6 onto the area. It is like that.
　また、実施形態２に係るインクジェット記録装置２は、記録ヘッド３３を備え、記録ヘッド３３から記録媒体５へＵＶインク７を吐出することにより記録を行うインクジェット記録装置であって、ＩＲ－ＬＥＤ３５を備え、ＩＲ－ＬＥＤ３５が、記録媒体５上における記録ヘッド３３がＵＶインク７を吐出すべき領域に対して、当該領域に記録ヘッド３３がＵＶインク７を吐出する前に、光を照射することによって、当該領域を加熱するようになっている。 The inkjet recording apparatus 2 according to the second embodiment is an inkjet recording apparatus that includes a recording head 33 and performs recording by discharging UV ink 7 from the recording head 33 to the recording medium 5, and includes an IR-LED 35. The IR-LED 35 irradiates light onto the area on the recording medium 5 where the recording head 33 should eject the UV ink 7 before the recording head 33 ejects the UV ink 7 onto the area. The area is heated.
　記録媒体５におけるインク吐出前の領域を予熱することにより、インク６または７の滲みを首尾よく抑制することができる。 By preheating the area of the recording medium 5 before ink ejection, bleeding of the ink 6 or 7 can be successfully suppressed.
　ここで、上記の構成によれば、ＩＲ－ＬＥＤ２３または３５によって上記領域を予熱するため、熱効率が良く、また、起動が速いため目的の領域のみを予熱することができる。よって、省電力を達成することができる。 Here, according to the above configuration, since the above-described region is preheated by the IR- LED 23 or 35, the thermal efficiency is good, and since the start-up is fast, only the target region can be preheated. Therefore, power saving can be achieved.
　実施形態１に係るインクジェット記録装置１は、記録媒体５に対して相対的に移動するキャリッジ２２を備えており、記録ヘッド２４およびＩＲ－ＬＥＤ２３がともにキャリッジ２２に搭載されている。 The inkjet recording apparatus 1 according to Embodiment 1 includes a carriage 22 that moves relative to the recording medium 5, and both the recording head 24 and the IR-LED 23 are mounted on the carriage 22.
　上記の構成によれば、ＩＲ－ＬＥＤ２３が記録ヘッド２４とともに移動するため、記録ヘッド２４がインク６を吐出する領域を首尾よく照射するために必要なＩＲ－ＬＥＤ２３の照射領域を小さくすることができる。そのため、より省電力を達成することができる上、コストを低減することができる。 According to the above configuration, since the IR-LED 23 moves together with the recording head 24, the irradiation area of the IR-LED 23 necessary for the recording head 24 to successfully irradiate the area where the ink 6 is ejected can be reduced. . Therefore, power saving can be achieved and costs can be reduced.
　実施形態１に係るインクジェット記録装置１では、記録ヘッド２４が吐出するインクは、溶媒を含んでおり、記録媒体５におけるインク６が吐出される側の面を加熱するプリヒータ２５およびポストヒータ２６をさらに備えている。 In the inkjet recording apparatus 1 according to the first embodiment, the ink ejected by the recording head 24 contains a solvent, and the preheater 25 and the postheater 26 that heat the surface of the recording medium 5 on which the ink 6 is ejected are further provided. I have.
　上記の構成によれば、ＩＲ－ＬＥＤ２３に加えて、プリヒータ２５およびポストヒータ２６でも記録媒体５を加熱することができ、記録媒体５の記録面を十分に加熱することができる。そのため、記録面に着弾したインク滴が滲み広がる前に、即座に揮発乾燥させることができる。これにより、高い記録品質を確保することができる。 According to the above configuration, the recording medium 5 can be heated by the pre-heater 25 and the post-heater 26 in addition to the IR-LED 23, and the recording surface of the recording medium 5 can be sufficiently heated. Therefore, the ink droplets that have landed on the recording surface can be evaporated and dried immediately before spreading. Thereby, high recording quality can be ensured.
　実施形態２に係るインクジェット記録装置２では、記録ヘッド３３が吐出するＵＶインク７は、紫外線によって硬化する紫外線硬化型インクであり、記録媒体５におけるＵＶインク７が吐出される側の面に、紫外線を照射するＵＶＬＥＤ３４および紫外線蛍光管３６をさらに備えている。 In the inkjet recording apparatus 2 according to the second embodiment, the UV ink 7 ejected by the recording head 33 is an ultraviolet curable ink that is cured by ultraviolet rays, and the ultraviolet rays on the surface of the recording medium 5 on which the UV ink 7 is ejected are disposed on the surface. Are further provided with a UVLED 34 and an ultraviolet fluorescent tube 36.
　一般に、記録媒体に着弾した紫外線硬化型インクのインク滴には、即座に紫外線が照射される。そのため、記録媒体上に凹凸が残りマット調の画質になる場合がある。 Generally, ultraviolet rays are immediately irradiated to ink droplets of ultraviolet curable ink that has landed on a recording medium. Therefore, unevenness may remain on the recording medium, resulting in a matte image quality.
　ここで、上記の構成によれば、ＵＶインク７を用いる場合に、ＩＲ－ＬＥＤ３５によって記録媒体５を予熱しておくことによって、記録媒体５の記録面を十分に加熱することができる。これにより、記録媒体５に吐出されたＵＶインク７の粘度を向上させることができ、平滑な（グロス調の）画質品質を得ることができる。 Here, according to the above configuration, when the UV ink 7 is used, the recording surface of the recording medium 5 can be sufficiently heated by preheating the recording medium 5 with the IR-LED 35. Thereby, the viscosity of the UV ink 7 discharged to the recording medium 5 can be improved, and smooth (glossy) image quality can be obtained.
　実施形態１に係る記録方法は、記録ヘッド２４が記録媒体５へインク６を吐出することにより記録を行う記録方法であって、記録媒体５は、特定の波長の光を吸収するようになっており、ＩＲ－ＬＥＤ２３が、記録媒体５上における記録ヘッド２４がインク６を吐出すべき領域に対して、当該領域に記録ヘッド２４がインク６を吐出する前に、該特定の波長の光を照射することによって、当該領域を加熱する予熱工程を包含する。 The recording method according to the first embodiment is a recording method in which recording is performed by the recording head 24 ejecting ink 6 to the recording medium 5, and the recording medium 5 absorbs light of a specific wavelength. The IR-LED 23 irradiates the area on the recording medium 5 where the recording head 24 should eject the ink 6 before the recording head 24 ejects the ink 6 onto the area. This includes a preheating step of heating the region.
　また、実施形態２に係る記録方法は、記録ヘッド３３が記録媒体５へＵＶインク７を吐出することにより記録を行う記録方法であって、記録媒体５は、特定の波長の光を吸収するようになっており、ＩＲ－ＬＥＤ３５が、記録媒体５上における記録ヘッド３３がＵＶインク７を吐出すべき領域に対して、当該領域に記録ヘッド３３がＵＶインク７を吐出する前に、該特定の波長の光を照射することによって、当該領域を加熱する予熱工程を包含する。 The recording method according to the second embodiment is a recording method in which recording is performed by the recording head 33 ejecting the UV ink 7 onto the recording medium 5, and the recording medium 5 absorbs light of a specific wavelength. The IR-LED 35 is configured so that the recording head 33 on the recording medium 5 has the specific area before the recording head 33 ejects the UV ink 7 to the area where the recording head 33 should eject the UV ink 7. A preheating step of heating the region by irradiating light of a wavelength is included.
　上記の構成によれば、特定の波長の光を吸収するようになっている記録媒体５に対してＩＲ－ＬＥＤ２３または３５が、当該特定の波長の光を照射することにより、首尾よく記録媒体５を予熱して、インク６またはＵＶインク７の滲みを抑制することができる。 According to the above configuration, the IR- LED 23 or 35 irradiates the light with the specific wavelength to the recording medium 5 adapted to absorb the light with the specific wavelength, so that the recording medium 5 can be successfully completed. Can be preheated to suppress bleeding of the ink 6 or the UV ink 7.
　そして、上記の構成によれば、ＩＲ－ＬＥＤ２３または３５によって上記領域を予熱するため、熱効率が良く、また、起動が速いため目的の領域のみを予熱することができる。よって、省電力を達成することができる。 And according to said structure, since the said area | region is pre-heated by IR-LED23 or 35, since thermal efficiency is good and starting is quick, only the target area | region can be pre-heated. Therefore, power saving can be achieved.
　本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。 The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.
　本発明は、印刷装置の製造分野、印刷物の製造分野等において利用可能である。 The present invention can be used in the manufacturing field of printing apparatuses, the manufacturing field of printed matter, and the like.
　１、２　　　インクジェット記録装置
　５　　　　　記録媒体
　６　　　　　インク
　７　　　　　ＵＶインク（インク、紫外線硬化型インク）
　１０　　　　プラテン
　２０、３０　Ｙバー
　２１、３１　ガイドレール
　２２、３２　キャリッジ
　２３、３５　ＩＲ－ＬＥＤ（発光ダイオード）
　２４、３３　記録ヘッド
　２５　　　　プリヒータ（ヒータ）
　２６　　　　ポストヒータ（ヒータ）
　３４　　　　ＵＶＬＥＤ（紫外線照射手段）
　３６　　　　紫外線蛍光管（紫外線照射手段） 1, 2 Inkjet recording device 5 Recording medium 6 Ink 7 UV ink (ink, ultraviolet curable ink)
10 Platen 20, 30 Y bar 21, 31 Guide rail 22, 32 Carriage 23, 35 IR-LED (light emitting diode)
24, 33 Recording head 25 Pre-heater (heater)
26 Post heater (heater)
34 UVLED (ultraviolet irradiation means)
36 UV fluorescent tube (UV irradiation means)

Claims (5)

  1. 　記録ヘッドを備え、該記録ヘッドから記録媒体へインクを吐出することにより記録を行うインクジェット記録装置であって、
    　発光ダイオードを備え、
    　該発光ダイオードが、該記録媒体上における該記録ヘッドが該インクを吐出すべき領域に対して、当該領域に該記録ヘッドが該インクを吐出する前に、光を照射することによって、当該領域を加熱するようになっていることを特徴とするインクジェット記録装置。     An inkjet recording apparatus that includes a recording head and performs recording by discharging ink from the recording head to a recording medium,
    With light emitting diodes,
    The light emitting diode irradiates the area on the recording medium with light before the recording head ejects the ink to the area where the recording head should eject the ink. An ink jet recording apparatus, wherein the ink jet recording apparatus is heated.
  2. 　上記記録媒体に対して相対的に移動するキャリッジを備えており、
    　上記記録ヘッドおよび上記発光ダイオードがともに該キャリッジに搭載されていることを特徴とする請求項１に記載のインクジェット記録装置。     A carriage that moves relative to the recording medium;
    2. The ink jet recording apparatus according to claim 1, wherein both the recording head and the light emitting diode are mounted on the carriage.
  3. 　上記記録ヘッドが吐出する上記インクは、溶媒を含んでおり、
    　上記記録媒体における上記インクが吐出される側の面を加熱するヒータをさらに備えていることを特徴とする請求項１に記載のインクジェット記録装置。     The ink ejected by the recording head contains a solvent,
    The inkjet recording apparatus according to claim 1, further comprising a heater that heats a surface of the recording medium on which the ink is ejected.
  4. 　上記記録ヘッドが吐出する上記インクは、紫外線によって硬化する紫外線硬化型インクであり、
    　上記記録媒体における上記インクが吐出される側の面に、紫外線を照射する紫外線照射手段をさらに備えていることを特徴とする請求項１～３の何れか一項に記載のインクジェット記録装置。     The ink discharged from the recording head is an ultraviolet curable ink that is cured by ultraviolet rays,
    The inkjet recording apparatus according to any one of claims 1 to 3, further comprising ultraviolet irradiation means for irradiating ultraviolet light on a surface of the recording medium on which the ink is ejected.
  5. 　記録ヘッドが記録媒体へインクを吐出することにより記録を行う記録方法であって、
    　該記録媒体は、特定の波長の光を吸収するようになっており、
    　発光ダイオードが、該記録媒体上における該記録ヘッドが該インクを吐出すべき領域に対して、当該領域に該記録ヘッドが該インクを吐出する前に、該特定の波長の光を照射することによって、当該領域を加熱する予熱工程を包含することを特徴とする記録方法。     A recording method in which a recording head performs recording by discharging ink onto a recording medium,
    The recording medium is adapted to absorb light of a specific wavelength,
    A light emitting diode irradiates the area where the recording head should eject the ink on the recording medium with light of the specific wavelength before the recording head ejects the ink to the area. And a preheating step of heating the area.
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