JP2012114384A - Light irradiation device and printing device - Google Patents

Abstract

【Task】
It aims at providing the light irradiation device and printing apparatus which can obtain the high illumination intensity of an ultraviolet-ray.
[Solution]
The light irradiation device of the present invention includes a base, a plurality of light emitting elements arranged vertically and horizontally on the upper surface of the base, and a plurality of lenses provided so as to cover the light emitting elements, respectively. In the light irradiation device for irradiating the object via the lens, the upper surface of the base has at least one inclined surface inclined with respect to the surface of the object, and the inclined surfaces are the plurality of the inclined surfaces. Among the light emitting elements, the optical axes of at least two light emitting elements are inclined so that the plurality of lenses have a shorter focal length as the distance between the base and the object at the provided position is shorter. Therefore, high illuminance of ultraviolet rays can be obtained in a relatively wide range.
[Selection] Figure 2

Description

  The present invention relates to a light irradiation device and a printing apparatus used for curing an ultraviolet curable resin or a paint.

  2. Description of the Related Art Conventionally, ultraviolet irradiation apparatuses are widely used for the purpose of fluorescence reaction observation in medical and bio fields, sterilization applications, adhesion of electronic components, curing of ultraviolet curable resins and inks, and the like. High pressure mercury lamps are used as lamp light sources for UV irradiation devices used for curing UV curable resins used for bonding small parts in the field of electronic components, etc., and UV curable inks used in the field of printing. And metal halide lamps are used.

  In recent years, reduction of the global environmental load has been screamed worldwide, and there has been an active movement to adopt an ultraviolet light emitting element as a lamp light source capable of relatively long life, energy saving and suppression of ozone generation. .

  However, since the illuminance of the ultraviolet light emitting element is relatively low, for example, as described in Patent Document 1, a device in which a plurality of light emitting elements are mounted on one substrate is prepared, and the plurality of devices are mounted on a support. Configuration modules are commonly used.

  However, the demand for improvement in light emission illuminance has gradually increased, and there has been a demand for a light irradiation device with relatively high illuminance while using an ultraviolet light emitting element with relatively low illuminance.

JP 2008-244165 A

  This invention is made | formed in view of the said problem, and aims at providing the light irradiation device and printing apparatus which can obtain the high illumination intensity of an ultraviolet-ray.

  The light irradiation device according to the present invention includes a base, a plurality of light emitting elements arranged vertically and horizontally on the upper surface of the base, and a plurality of lenses provided so as to cover the light emitting elements, respectively. In the light irradiation device that irradiates the object with the light through the lens, the upper surface of the substrate has at least one inclined surface inclined with respect to the surface of the object, and the inclined surface is Among the plurality of light emitting elements, the optical axes of at least two light emitting elements are inclined so that the plurality of lenses has a shorter distance between the base and the object at the provided position. The focal length is short.

  The plurality of lenses may include two types of lenses having different curvature radii.

  Further, the plurality of lenses include two types of lenses having different refractive indexes.

  The plurality of lenses include a plano-convex lens and a biconvex lens.

  Furthermore, the present invention provides a light irradiation module in which a plurality of light irradiation devices are placed on a heat dissipation member.

  The present invention also provides a printing apparatus comprising printing means for printing on a recording medium, and a light irradiation module for irradiating the printed recording medium with light.

  According to the light irradiation device of the present invention, the light emitting device includes a base, a plurality of light emitting elements arranged vertically and horizontally on the upper surface of the base, and a plurality of lenses provided so as to cover the light emitting elements, respectively. In a light irradiation device that irradiates an object with light from an element through the lens, the upper surface of the base has at least one inclined surface that is inclined with respect to the surface of the object, and the inclined surface Since the optical axes of at least two light emitting elements among the plurality of light emitting elements are inclined so as to intersect, light from the light emitting elements can be effectively condensed. In addition, since the focal length of each of the plurality of lenses is shorter as the distance between the substrate and the object at the provided position is shorter, the focal points from the respective light emitting elements can be made substantially on the same plane. As a result, a light irradiation device having a wide irradiation region in which high illuminance of ultraviolet rays can be obtained is realized.

FIG. 1 is a plan view of a light irradiation device according to an embodiment of the present invention. FIG. 2 is a side view of the light irradiation device shown in FIG. FIG. 3 is a cross-sectional view taken along line 1I-1I in the light irradiation device shown in FIG. FIG. 4 is a view for explaining the arrangement of three types of optical lenses 17a, 17b and 17c of the light irradiation device according to the embodiment of the present invention. FIG. 5 is a top view of a printing apparatus using the light irradiation module shown in FIG. 6 is a side view of the printing apparatus shown in FIG. FIG. 7 is a side view of a light irradiation device according to another embodiment of the present invention. FIG. 8 is a side view of a light irradiation device according to another embodiment of the present invention. FIG. 9 is a plan view of a light irradiation device according to another embodiment of the present invention. 10 is a side view of the light irradiation device shown in FIG.

  Hereinafter, the light irradiation device and the printing apparatus of the present invention will be described with reference to the drawings.

(Embodiment of light irradiation device)
The light irradiation device 1 shown in FIGS. 1, 2, and 3 is incorporated in a printing apparatus such as an offset printing apparatus or an inkjet printing apparatus that uses ultraviolet curable ink, and after the ultraviolet curable ink is deposited on a recording medium. It functions as an ultraviolet irradiation device of an ultraviolet irradiation module that cures ultraviolet curable ink by irradiating ultraviolet rays.

  The light irradiation device 1 is arranged in a base 10 having a plurality of openings 12 on an upper surface 11, a plurality of connection pads 13 provided in each opening 12, and in each opening 12 of the base 10, 13, a plurality of light emitting elements 20 electrically connected to 13, a plurality of sealing materials 30 filled in each opening 12 and covering the light emitting elements 20, and the light emitting elements 20 corresponding to each opening 12. And a plurality of optical lenses 17 disposed so as to be covered.

The base 10 includes a stacked body 40 in which a first insulating layer 41 and a second insulating layer 42 are stacked, and an electric wiring 60 that connects the light emitting elements 20 to each other, as viewed in plan from the upper surface 11 side. The light emitting element 20 is supported in an opening 12 provided on the upper surface 11.

  The upper surface 11 of the substrate 10 has an inclined surface that is inclined with respect to the surface of the recording medium on which the ultraviolet curable ink is applied, which is an object to be irradiated with ultraviolet rays, and includes at least two light emitting elements. Inclined so that the optical axes intersect each other. In the present embodiment, as shown in FIG. 2, the upper surface 11 is such that the end surface 16a and the end surface 16b are closer to the surface of the object than the axis passing through the center of the substrate 10 parallel to the end surface 16a and the end surface 16b. Is inclined.

  Thus, the upper surface 11 has an inclined surface inclined with respect to the surface of the object, and is inclined so that the optical axes of at least two light emitting elements intersect with each other. By collecting the ultraviolet rays irradiated from both sides, the illuminance of the ultraviolet rays irradiated to the object can be made relatively high.

  The first insulating layer 41 includes, for example, an aluminum oxide sintered body, an aluminum nitride sintered body, a mullite sintered body, ceramics such as glass ceramics, and resins such as epoxy resins and liquid crystal polymers (LCP). , Etc.

  Next, the electrical wiring 60 is formed in a predetermined pattern using a conductive material such as tungsten (W), molybdenum (Mo), manganese (Mn), copper (Cu), and the like. Alternatively, it functions as a power supply wiring for supplying a current from the light emitting element 20.

  Next, in the second insulating layer 42 laminated on the first insulating layer 41, the opening 12 that penetrates the second insulating layer 42 is formed.

  The opening 12 has an inner peripheral surface 14 inclined such that each opening has a larger opening area on the upper surface 11 side of the substrate 10 than the mounting surface of the light emitting element 20. It has a substantially circular shape. The opening shape is not limited to a circular shape, and may be a substantially rectangular shape.

  Such an opening 12 has a function of reflecting light emitted from the light emitting element 20 upward on the inner peripheral surface 14 to improve light extraction efficiency.

  In order to improve the light extraction efficiency, the material of the second insulating layer 42 is a porous ceramic material having a relatively good reflectivity with respect to light in the ultraviolet region, such as an aluminum oxide sintered body, an oxide It is preferable to form with a zirconium sintered body and an aluminum nitride sintered body. Further, from the viewpoint of improving the light extraction efficiency, a metal reflection film may be provided on the inner peripheral surface 14 of the opening 12.

  Such openings 12 are arranged vertically and horizontally over the entire top surface 11 of the substrate 10. For example, the light emitting elements 20 can be arranged at a higher density by arranging in a staggered pattern, and the illuminance per unit area can be increased. Here, to arrange in a zigzag pattern is synonymous with arranging at the grid points of the diagonal grid.

  If sufficient illuminance per unit area can be ensured, it may be arranged in a regular lattice shape or the like, and there is no need to limit the arrangement shape.

The base 10 provided with the laminate 40 composed of the first insulating layer 41 and the second insulating layer 42 as described above, when the first insulating layer 41 and the second insulating layer 42 are made of ceramics or the like, It is manufactured through the following steps. First, a plurality of ceramic green sheets manufactured by a conventionally known method is prepared. A hole corresponding to the opening is formed in the ceramic green sheet corresponding to the opening 12 by a method such as punching. Next, a metal paste to be the internal wiring 60 is printed (not shown) on the green sheet, and then the green sheet is laminated so that the printed metal paste is positioned between the green sheets. Examples of the metal paste used as the internal wiring 60 include a paste containing a metal such as tungsten (W), molybdenum (Mo), manganese (Mn), and copper (Cu). Next, the substrate 10 having the internal wiring 60 and the opening 12 can be formed by firing the laminate and firing the green sheet and the metal paste together.

  Moreover, when the 1st insulating layer 41 and the 2nd insulating layer 42 consist of resin, the manufacturing method of the base | substrate 10 can consider the following methods, for example. First, a precursor sheet of a thermosetting resin is prepared. Next, a plurality of precursor sheets are laminated so that lead terminals made of a metal material to be the internal wiring 60 are disposed between the precursor sheets and the lead terminals are embedded in the precursor sheets. Examples of the material for forming the lead terminal include metal materials such as Cu, Ag, Al, iron (Fe) -nickel (Ni) -cobalt (Co) alloy, and Fe-Ni alloy. And after forming the hole corresponding to the opening part 12 in a precursor sheet | seat by methods, such as a laser processing and an etching, the base | substrate 10 is completed by thermosetting this.

  On the other hand, in the opening 12 of the base body 10, a connection pad 13 electrically connected to the light emitting element 20 and a bonding material 15 such as solder, gold (Au) wire, aluminum (Al) wire, etc. are connected to the connection pad 13. And the sealing material 30 for sealing the light emitting element 20 are provided.

  The connection pad 13 is formed of a metal layer made of a metal material such as tungsten (W), molybdenum (Mo), manganese (Mn), and copper (Cu). If necessary, a nickel (Ni) layer, a palladium (Pd) layer, a gold (Au) layer, or the like may be further laminated on the metal layer. The connection pad 13 is connected to the light emitting element 20 by a bonding material 15 such as solder, gold (Au) wire, or aluminum (Al) wire.

  The light-emitting element 20 includes, for example, a light-emitting diode in which a p-type semiconductor layer and an n-type semiconductor layer made of a semiconductor material such as GaAs or GaN are stacked on an element substrate 21 such as a sapphire substrate, or a semiconductor layer is organic. An organic EL element made of a material is used.

  The light emitting element 20 is connected to a semiconductor layer 22 having a light emitting layer and a connection pad 13 disposed on the substrate 10 through a bonding material 15 such as solder, gold (Au) wire, aluminum (Al) wire, or the like. Element electrodes 23 and 24 made of a metal material such as Ag are provided, and are wire-bonded to the base 10. The light emitting element 20 emits light having a predetermined wavelength according to the current flowing between the element electrodes 23 and 24 with a predetermined luminance, and emits the light to the outside through the element substrate 21. As is well known, the element substrate 21 can be omitted. Further, the connection between the element electrodes 23 and 24 of the light emitting element 20 and the connection pad 13 may be performed by a conventionally known flip lip connection technique using solder or the like as the bonding material 15.

  In the present embodiment, an LED that emits UV light having a wavelength peak spectrum of light emitted from the light emitting element 20 of, for example, 250 to 395 [nm] or less is employed. That is, in this embodiment, a UV-LED element is employed as the light emitting element 20. The light emitting element 20 is formed by a conventionally known thin film forming technique.

  And this light emitting element 20 is sealed with the sealing material 30 mentioned above.

The sealing material 30 is formed of an insulating material such as a light-transmitting resin material, and prevents the entry of moisture from the outside by sealing the light emitting element 20 well, or from the outside. The impact is absorbed and the light emitting element 20 is protected.

  The sealing material 30 is a material having a refractive index between the refractive index of the element substrate 21 constituting the light emitting element 20 (in the case of sapphire: 1.7) and the refractive index of air (about 1.0), for example, By being formed of silicone resin (refractive index: about 1.4) or the like, the light extraction efficiency of the light emitting element 20 can be improved.

  The sealing material 30 is formed by mounting the light emitting element 20 on the substrate 10, filling a precursor such as a silicone resin into the opening 12, and curing it.

  And the optical lens 17 is arrange | positioned so that the light emitting element 20 may be covered on the above-mentioned sealing material 30 via the 1st adhesive agent 50. FIG. In the light irradiation device of this embodiment, a plano-convex lens is used as the optical lens 17. That is, in the optical lens 17 of the present embodiment, one main surface is convex and the other main surface is flat, and the cross-sectional area decreases from the other main surface toward the one main surface.

  The optical lens 17 is formed of, for example, silicone and has a function of condensing light emitted from the light emitting element 20. In addition to the silicone described above, examples of the material of the optical lens include thermosetting resins such as urethane and epoxy, plastics such as thermoplastic resins such as polycarbonate and acrylic, sapphire, and inorganic glass.

  The optical lens 17 is composed of a plurality of types of lenses having different focal lengths. In the present embodiment, three types of optical lenses 17a, 17b and 17c having different radii of curvature are used. For example, a lens having a radius of curvature of 0.8 to 1.2 mm is used for the optical lens 17a, a radius of curvature of 2.3 to 2.7 mm is used for the optical lens 17b, and a lens having a radius of curvature of 4.8 to 5.2 mm is used for the optical lens 17c. It is done.

  The reason why a plurality of types of lenses having different focal lengths is used will be described next.

As described above, the upper surface 11 of the substrate 10 has an inclined surface that is inclined with respect to the object, and is inclined so that the optical axes of at least two light emitting elements intersect with each other. Although the illuminance of the ultraviolet rays to be generated can be made relatively high, the illuminance variation of the ultraviolet rays on the object increases in the direction from the end surface 16a to the end surface 16b of the substrate 10. Specifically, the illuminance is relatively low at the end face 16 a and the end face 16 b, and the illuminance becomes relatively high toward the center of the substrate 10.

  Therefore, by using multiple types of lenses with different focal lengths, the UV illuminance on the object is relatively high by focusing near the object in the UV irradiation area. In addition, relatively stable illuminance can be obtained in the direction from the end face 16a to the end face 16b of the base 10. In other words, the ultraviolet illuminance in the ultraviolet irradiation region is relatively high and can be stable with relatively little variation.

  The optical lens 17 of the present embodiment is composed of optical lenses 17a, 17b and 17c having different focal lengths by changing the curvature radius of the lens.

  As described above, the reason why a plurality of types of lenses having different focal lengths is used is that the range of the irradiation distance for obtaining the illuminance necessary for curing the ultraviolet curable ink or the like can be made relatively wide.

  As a method of changing the focal length of the optical lens 17, in addition to the method of changing the radius of curvature of the lens as in this embodiment, a method of changing the refractive index of the lens, or a biconvex lens instead of the plano-convex lens is used. There are methods such as use, and any method may be adopted as long as the focal length can be varied.

  Next, the arrangement of the optical lenses 17a, 17b and 17c will be described with reference to FIG.

  In the light irradiation device 1, the optical lens 17 constitutes a plurality of lens groups 18 arranged in parallel. In the light irradiation device 1 of the present embodiment, each lens group 18 is composed of lenses having the same focal length, and specifically, the lens group 18 composed only of the optical lens 17a, and then only the optical lens 17b. The configured lens group 18 and the lens group 18 including only the optical lens 17c have a short focal length from the end faces 16a and 16b of the base 10 toward the axis passing through the center of the base 10 in parallel with the end faces 16a and 16b. The optical lens 17a, the optical lens 17b, and the optical lens 17c are arranged in this order. By adopting such an arrangement, for example, the illuminance necessary for curing the ultraviolet curable ink etc. without leaking to the entire area in the width direction of the recording medium by conveying the recording medium so as to pass through each lens array. Can be irradiated. Further, since the ultraviolet curable ink on the same line in the width direction of the recording medium can be cured at the same time, curing unevenness and the like can be prevented.

  Moreover, the light irradiation device 1 can enhance the heat dissipation effect by adhering to the heat dissipation member 110 via the second adhesive 70 such as a silicone resin or an epoxy resin. As a material for forming the heat radiating member 110, a material having a high thermal conductivity is preferable. Examples thereof include various metal materials, ceramics, and resin materials.

(Embodiment of printing apparatus)
As an embodiment of the printing apparatus of the present invention, the printing apparatus 200 shown in FIGS. 7 and 8 will be described as an example. The printing apparatus 200 includes a transport mechanism 210 for transporting the recording medium 250, an inkjet head 220 as a printing mechanism for printing on the transported recording medium 250, and an ultraviolet for the recording medium 250 after printing. The light irradiation device 1 that irradiates light and the control mechanism 230 that controls the light emission of the light irradiation device 1 are provided.

  The transport mechanism 210 is for transporting the recording medium 250 so as to pass through the inkjet head 220 and the light irradiation device 1 in this order. The transport mechanism 210 and the mounting table 211 are arranged so as to face each other and are rotatably supported. And a roller 212. The recording medium 250 supported by the mounting table 211 is sent between the pair of transport rollers 212, and the transport roller 212 is rotated to send the recording medium 250 in the transport direction.

  Here, the inclined surface of the light irradiation device 1 is arranged to be inclined with respect to the mounting surface of the mounting table 211.

  The inkjet head 220 has a function of attaching a photosensitive material to the recording medium 250 conveyed via the conveyance mechanism 210. The ink-jet head 220 is configured to eject droplets containing the photosensitive material toward the recording medium 250 and adhere to the recording medium 250. In the present embodiment, ultraviolet curable ink is employed as the photosensitive material. Examples of the photosensitive material include a photosensitive resist and a photocurable resin in addition to the ultraviolet curable ink.

In the present embodiment, a line-type inkjet head is adopted as the inkjet head 220. The inkjet head 220 has a plurality of ejection holes 220a arranged in a line, and is configured to eject ultraviolet curable ink from the ejection holes 220a. The inkjet head 220 ejects ink from the ejection holes 220a to the recording medium 250 transported in a direction orthogonal to the arrangement of the ejection holes 220a, and deposits the ink on the recording medium, whereby the recording medium 250 Printing is performed.

  In the present embodiment, a line-type inkjet head has been described as an example of the printing mechanism, but the present invention is not limited to this. For example, a serial-type inkjet head may be employed, A serial type spray head may be employed. Further, as the printing mechanism, an electrostatic head that accumulates static electricity of the recording medium 250 and attaches the photosensitive material with the static electricity may be employed, or the recording medium 250 is immersed in a liquid photosensitive material and the photosensitive medium is used. An immersion apparatus for attaching a conductive material may be employed. Further, a brush, a brush, and a roller may be employed as the printing mechanism.

  In the printing apparatus 200, the light irradiation device 1 has a function of sensitizing the photosensitive material attached to the recording medium 250 conveyed via the conveyance mechanism 210. The light irradiation device 1 is provided on the downstream side in the transport direction with respect to the inkjet head 220. In the printing apparatus 200, the light emitting element 20 has a function of exposing a photosensitive material attached to the recording medium 250.

  The control mechanism 230 has a function of controlling light emission of the light irradiation device 1. The memory of the control mechanism 230 stores information indicating light characteristics that make it relatively good to cure the ink droplets ejected from the inkjet head 220. Specific examples of the stored information include wavelength distribution characteristics suitable for curing ejected ink droplets, and numerical values representing emission intensity (emission intensity in each wavelength range). In the printing apparatus 200 of the present embodiment, by including the control mechanism 230, the magnitude of the drive current input to the plurality of light emitting elements 20 can be adjusted based on the stored information of the control mechanism 230. Therefore, according to the printing apparatus 200, it is possible to irradiate light with an appropriate amount of light according to the characteristics of the ink used, and it is possible to cure the ink droplets with relatively low energy light.

  In the printing apparatus 200, the transport mechanism 210 transports the recording medium 250 in the transport direction. The inkjet head 220 discharges ultraviolet curable ink to the recording medium 250 being conveyed, and causes the ultraviolet curable ink to adhere to the surface of the recording medium 250. At this time, the ultraviolet curable ink to be attached to the recording medium 250 may be attached to the entire surface, partially attached, or attached in a desired pattern. In this printing apparatus 200, the ultraviolet curable ink attached to the recording medium 250 is irradiated with ultraviolet rays emitted from the light irradiation device 1 to cure the ultraviolet curable ink.

  The printing apparatus 200 according to the present embodiment can enjoy the effects of the light irradiation device 1. In the printing apparatus 200 of this embodiment, the surface of the recording medium 250 and the upper surface 11 on which the light emitting element 20 of the light irradiation device 1 is mounted are inclined, so that the light irradiation device 1 can be downsized. In addition, the illuminance of the ultraviolet rays irradiated on the recording medium 250 is relatively high, and a relatively stable illuminance can be obtained in the ultraviolet irradiation region.

  While specific embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

  For example, in the above-described embodiment, as long as the pair of inclined surfaces are provided and the optical axes of at least two light emitting elements intersect, the number of inclined surfaces is one as shown in FIG. It may be good, or three or more.

  Further, the upper surface 11 may be inclined with respect to the object by attaching the base 10 to a flat plate as shown in FIG. 8 and adhering to the heat radiating member 110 having an inclined surface via the second adhesive 70. With such a structure, the base 10 can be manufactured relatively easily.

Further, as shown in FIG. 9, the upper surface 11 of the base body 10 is divided into four regions and arranged so that the distance between the object and the upper surface becomes shorter from the center of the base body 10 toward the corner of the base body 10. Also good.

  In this case, as shown in FIG. 10, the lens group 18 may be arranged so as to be perpendicular to the direction from the center of the base 10 toward the corner of the base 10.

  The embodiment of the printing apparatus 200 is not limited to the above embodiment. For example, a so-called offset printing type printer that rotates a shaft-supported roller and conveys a recording medium along the roller surface may exhibit the same effect.

  In the present embodiment, an example in which the light irradiation device 1 is applied to the printing apparatus 200 using the inkjet head 220 is shown. The light irradiation device 1 cures, for example, a photo-curing resin spin-coated on the surface of the object. It can also be applied to the curing of various types of photo-curing resins such as dedicated devices. Further, the light irradiation device 1 may be used as an irradiation light source in an exposure apparatus, for example.

DESCRIPTION OF SYMBOLS 1 Light irradiation device 10 Base | substrate 11 Upper surface 12 Opening part 13 Connection pad 14 Inner peripheral surface 15 Bonding material 16a, 16b End surface 17 Optical lens 17a, 17b, 17c Optical lens 18 Lens group 20 Light emitting element 21 Element substrate 22 Semiconductor layers 23 and 24 Element electrode 30 Sealing material 40 Laminate body 41 First insulating layer 42 Second insulating layer 50 First adhesive 70 Second adhesive 110 Heat radiating member 200 Printing device 210 Conveying mechanism 211 Mounting table 212 Conveying roller 220 Inkjet head 220a Discharge hole 230 Control mechanism 250 Recording medium

Claims (6)

A substrate, a plurality of light emitting elements arranged vertically and horizontally on the upper surface of the substrate, and a plurality of lenses provided to cover the light emitting elements,
In the light irradiation device that irradiates the object with the light of the light emitting element through the lens,
The upper surface of the base has at least one inclined surface that is inclined with respect to the surface of the object, and the inclined surfaces intersect at least two light emitting elements among the plurality of light emitting elements. Is inclined to
The light irradiation device, wherein the plurality of lenses has a shorter focal length as a distance between the base and the object at a provided position is shorter.   The light irradiation device according to claim 1, wherein the plurality of lenses include two kinds of lenses having different curvature radii.   The light irradiation device according to claim 1, wherein the plurality of lenses include two types of lenses having different refractive indexes.   The light irradiation device according to claim 1, wherein the plurality of lenses include a plano-convex lens and a biconvex lens.   A light irradiation module comprising a plurality of light irradiation devices according to claim 1 mounted on a heat dissipation member. A transport unit that has a mounting surface on which the object is placed and transports the object;
Printing means for printing on a recording medium;
The light irradiation module according to claim 5, which irradiates light on the printed object.
The printing apparatus, wherein the inclined surface of the base body is inclined with respect to the placement surface.

Images