JP4617202B2 - Inkjet printer for 3D media printing using UV curable ink - Google Patents

Description

  The present invention relates to an ink jet printer that prints an image on the surface of a three-dimensional media using a UV curable ink that cures when irradiated with ultraviolet rays.

Inkjet printers have recently developed images not only on the surface of flat sheets and the like, but also on the surface of three-dimensional media as described in JP-A-10-006493 and JP-A-10-042464. It is being used for printing.
Also, not only ordinary paper media but also various media surfaces such as plastic products, fabrics, and leathers can be directly printed with images that contain or do not contain characters and symbols (hereinafter simply referred to as images). As a possible ink jet printer, recently, a printer using UV curable ink as described in Japanese Patent Application Laid-Open No. 2004-358769, Japanese Patent Application Laid-Open No. 2005-007577 and the like has been developed and used.

If an example of this inkjet printer for three-dimensional media printing using UV curable ink is given, it has a structure as shown in FIG.
In this printer, the three-dimensional media 20 can be moved up and down in the Z direction (up and down direction in the figure) on the support means 30 provided below the traveling path of the inkjet head 10 that runs in the Y direction (left and right direction in the figure). The image printing surface 22 of the three-dimensional media is supported so as to be rotatable about the X axis (the axis facing the front and back surfaces in the figure) with the image print surface 22 oriented substantially in the horizontal direction. Then, the ink droplets ejected from the ink discharge ports 12 arranged in the inkjet head are landed on the image print surface 22 of the three-dimensional media. In that case, the three-dimensional media 20 is moved up and down in the Z direction or rotated around the X axis and the Y axis (the axes facing the left and right directions in the drawing), and ejected downward from the ink discharge port 1210 of the inkjet head. The separation distance H between the image print surface 22 of the three-dimensional media for landing the ink droplets and the inkjet head 10 is kept constant, or the image print surface 22 of the three-dimensional media for landing the ink droplets is kept almost horizontal. is doing.
The UV light source 40 is disposed near the three-dimensional media 20 below the traveling path of the inkjet head 10. Then, the ultraviolet rays emitted from the UV light source 40 are applied to the ink droplets landed on the image print surface 22 of the three-dimensional media from the oblique lateral direction.
Here, the reason why the ultraviolet ray emitted from the UV light source 40 is applied to the ink droplet landed on the image print surface 22 of the three-dimensional media not from the upper side but from the oblique lateral direction is that the ink droplet This is because the inkjet head 10 is present above the image print surface 22 of the three-dimensional media on which the ink is landed, and there is no space for arranging the UV light source 40.
JP-A-10-006493 Japanese Patent Laid-Open No. 10-042464 JP 2004-358769 A JP 2005-007577 A

  By the way, in the printer as shown in FIG. 6, the ultraviolet ray emitted from the UV light source 40 arranged below the traveling path of the inkjet head 10 is the image print surface of the three-dimensional media on which ink droplets are landed. Irradiation was performed not only on the ink discharge port 12 but also on the ink discharge port 12 arranged on the lower surface of the ink jet head existing in the vicinity thereof. Then, the UV curable ink remaining in the ink discharge port 12 was cured. For this reason, the ink discharge port 12 is clogged with ink, and the ink jet head 10 malfunctions.

  In addition, on the image print surface 22 of the three-dimensional media, the periphery of the spot where the ink droplets are landed is not a horizontal plane, but in many cases is a curved surface descending downward or an inclined surface. On the other hand, the ink droplets before curing immediately after landing on the image print surface 22 of the three-dimensional media have low viscosity, so that the ink droplets landed on the image print surface 22 of the three-dimensional media are small-diameter dots. Instead, it flows out to the surface portion of the three-dimensional media 20 around the landing location, and the dot shape of the ink droplet is destroyed. For this reason, the image printed on the image print surface 22 of the three-dimensional media is blurred or distorted, the landing position of the ink droplet is shifted, and the image is distorted. This phenomenon is due to the fact that UV light cannot be efficiently irradiated from above the spot where ink droplets have landed, and UV light is irradiated obliquely from the side where ink droplets have landed. In printers of the same type.

The present invention has been made to solve these problems, and ultraviolet rays for curing ink droplets emitted from a UV light source are applied to the ink discharge ports arranged on the lower surface of the ink jet head, and the ink is discharged. A first object is to provide an ink jet printer for three-dimensional media printing using UV curable ink, which can prevent the ejection opening from being clogged with ink.
In addition, the ink droplets before curing immediately after landing on the image print surface of the three-dimensional media do not become small-diameter dots, but flow out to the surface of the three-dimensional media around the landed location, and the dots of the ink droplets A second object is to provide an inkjet printer (hereinafter referred to as a printer) for stereoscopic media printing using UV curable ink, which can prevent the shape from collapsing.

In order to achieve the above object , the printer of the present invention rotates around at least one axis.
While the rolling freely supported solid media is rotated, from the ink ejection port by ejecting ink droplets of UV-curable image printing surface of the solid medium of the ink <br/> jet head facing the solid media by irradiating ultraviolet rays from the UV light source to the ink droplets are landed, by curing the ink droplets, inkjet printers for printing an image comprising a plurality of ink dots arranged in the image printing surface of the solid medium And the solid
The ink discharge port is provided between the medium, the UV light source, and the inkjet head.
A light shielding plate having an opening for facing the three-dimensional media; and
Before performing ink droplet ejection operation by moving the ink jet head relative to the ink jet head
After the ink discharge port and the opening face each other, the ink discharge port that faces the opening
Ink droplets are ejected to land on the image print surface .

  In the printer having such a configuration, the shielding plate prevents the ultraviolet light applied from the UV light source to the ink droplets landed on the image print surface of the three-dimensional media from hitting the ink discharge port of the inkjet head. It is possible to prevent the discharge port from causing ink clogging.

Further, the inkjet head is disposed above the three-dimensional media, and the UV
A light source is arranged on the side of the three-dimensional media and irradiates the side of the three-dimensional media with ultraviolet rays.
Preferably it is possible.

In the printer according to the present invention, in addition to directly irradiating the ultraviolet ray emitted from the UV light source toward the image print surface of the three-dimensional media on which the ink droplet is landed, the ultraviolet ray emitted from the same UV light source is It is possible to efficiently collect the ink droplets by reflecting them toward the image print surface of the three-dimensional media on which the ink droplets have landed, using a reflecting mirror attached to the shielding plate, without being diffused widely and wastefully. As a result, the amount of ultraviolet light applied to the ink droplets landed on the image print surface of the three-dimensional media can be increased, and the ink droplets can be cured efficiently in a short time. Then, it is possible to prevent the ink droplets from flowing out to the surface portion of the three-dimensional media having a curved surface or an inclined surface around the landing location, and the shape of the ink droplets from collapsing.

In the above-described printer, the UV light source may be a side of the UV light source and the three-dimensional media.
It is preferably supported by an adjusting mechanism that adjusts the separation distance from the image print surface.

  In such a case, the image print surface of the three-dimensional media supported by the supporting means below the traveling path of the inkjet head and rotated about the X axis or the Y axis or moved up and down in the Z axis direction. The distance from the UV light source can be adjusted. Then, the irradiation amount of the ultraviolet light irradiated from the UV light source to the ink droplets ejected from the inkjet head and landed on the image print surface of the three-dimensional media, the arrangement state of the image print surface of the three-dimensional media supported by the supporting means, It can be kept almost constant according to the shape. Then, the amount of ultraviolet light emitted from the UV light source to the ink droplet landed on the image print surface of the three-dimensional media is small, and the ink droplet flows out to the periphery of the landed portion, and the shape of the ink droplet Can be prevented from collapsing. Or, conversely, it is possible to prevent the three-dimensional media from being damaged by the ultraviolet rays due to the excessive irradiation amount of the ultraviolet light irradiated from the UV light source to the ink droplets landed on the image print surface of the three-dimensional media.

In the printer of the present invention, the inkjet head is disposed above the three-dimensional media.
The UV light source is disposed below the stereoscopic medium, and
It is possible to irradiate ultraviolet rays, and the light shielding plate is directed downward from the edge of the light shielding plate.
An extended cover part is provided, and the three-dimensional media and the UV are provided by the cover part.
A configuration in which the light source is covered is also preferable.

In the printer according to the present invention, the time for turning on each of the UV light sources independently provided on the side portions of the plurality of sub heads arranged in the inkjet head is determined from the predetermined sub-head on which the UV light source is provided on the side portion. This can be limited only to the time during which ultraviolet rays are irradiated to the ink droplets that have been ejected and landed on the image print surface of the stereoscopic media. During other periods, the UV light source provided on the side of the predetermined sub head can be kept off. And
It is possible to prevent the ultraviolet light from the UV light source provided at the side portion of the predetermined sub head from being continuously emitted in an unnecessary time zone. Then, the UV light that is emitted unnecessarily during the unnecessary time period is reflected on the surface of the printer component and irradiated to unnecessary portions of the 3D media. It is possible to prevent excessive power consumption.

In the above-described printer, the light shielding plate reflects ultraviolet rays on a surface facing the three-dimensional media.
It is preferable that the reflecting member to be provided is provided.

As described above, according to the printer of the present invention, ultraviolet rays for curing ink droplets emitted from a UV light source are applied to the ink discharge ports arranged on the lower surface of the inkjet head, and the ink discharge ports are clogged with ink. Can be reliably prevented by the shielding plate.
Further, it is possible to prevent an ink droplet having a low viscosity before curing immediately after landing on the image print surface of the three-dimensional media from flowing out to the vicinity of the landed portion and losing the shape of the ink droplet. A sharp and clear image can be printed on the image print surface of the three-dimensional media.
Furthermore, the image can be reliably and stably fixed so that the image is not easily dropped even if it is rubbed on the image print surface of the three-dimensional media on which the ink droplets have landed.

  FIG. 1 shows a preferred embodiment of a printer of the present invention, and FIG. 1 is a schematic configuration diagram thereof. The printer will be described below.

The printer shown in FIG. 1 irradiates UV curable ink droplets, which are ejected from the ink discharge ports 12 of the inkjet head 10 and land on the image print surface 22 of the three-dimensional media, with ultraviolet rays from a UV light source 40. The ink droplet is cured. For the UV light source 40, a metal halide type UV lamp such as MAN85AL-F manufactured by Nippon Battery Co., Ltd., or a UVLED (abbreviation of ULTRA-VIORET LIGHT MITTING DEVICE) such as NCCU003 manufactured by Nichia Corporation is used. Yes. And it has the structure which prints the image which consists of the arrangement | sequence of several ink dots on the image print surface 22 of the three-dimensional media. The UV light source 40 is provided at a side portion of the three-dimensional media 20 supported by the support means 30 below the traveling path of the inkjet head 10.
The three-dimensional media 20 is rotated around the X axis (the axis facing the front and back surfaces in the figure) and the Y axis (the axis facing the left and right directions in the figure) by the support means 30 provided below the travel path of the inkjet head 10. , And can be moved up and down in the Z direction (up and down direction). Then, a separation distance (hereinafter referred to as a head separation distance) H between the ink discharge port 12 of the inkjet head and the image print surface 22 of the three-dimensional media on which the ink droplet ejected from the ink discharge port 12 is landed is 1 to It has a structure that can be held to about 2 mm. At the same time, the image print surface 22 of the three-dimensional media on which the ink droplets are landed can be held substantially horizontally.
As described above, the reason why the three-dimensional media 20 is supported by the support means 30 is that if the head separation distance H is too large, the ink droplets ejected from the ink discharge ports 12 are diffused widely, This is because the ink dots of the small diameter cannot be accurately formed on the image print surface 22 of the three-dimensional media because they land on the image print surface 22. This is because a sharp and clear image cannot be printed on the image print surface 22 of the three-dimensional media. On the other hand, if the head separation distance H is too small, the surface of the three-dimensional media 20 touches the ink discharge port 12 and becomes dirty, or the image print surface 22 of the three-dimensional media interferes with the inkjet head 10, and This is because the landed ink droplets adhere to the inkjet head 10.
In addition, the reason why the image print surface 22 of the three-dimensional media on which the ink droplets are landed is kept substantially horizontal is that otherwise the separation distance (gap) between the ink discharge ports arranged in the inkjet head 10 and the image print surface 22 of the three-dimensional media. However, all of the ink discharge ports 12 arranged in the inkjet head are significantly different, and the ink droplets ejected from each of the ink discharge ports 12 arranged in the inkjet head land on the target position of the image print surface 22. It is because it becomes impossible to obtain. Otherwise, low viscosity ink droplets that have landed on the image print surface 22 of the three-dimensional media will flow out to the vicinity of the landed locations, and the shape of the ink droplets will collapse. This is because small-diameter ink dots are not accurately formed on the image print surface 22 of the three-dimensional media.

The above-described configuration is the same as that of a conventional inkjet printer. In this printer, ultraviolet rays irradiated from the UV light source 40 toward the ink droplets that have landed on the image print surface 22 of the three-dimensional media are used as ink in the inkjet head. A shielding plate 50 for preventing the discharge port 12 from being irradiated is provided. The shielding plate 50 has a structure in which holes 52 are formed in a flat plate, and can be moved in the Y direction or cannot be moved in the Y direction immediately below the traveling path of the inkjet head 10 in which the ink discharge ports 12 are arranged. It is supported. Incidentally, in the example of FIG. 1, the shielding plate 50 is supported below the traveling path of the inkjet head 10 so as not to move in the Y direction. Instead, the inkjet head 10 is structured to move in the Y direction with respect to the shielding plate 50. In a state where the flat hole 52 is located below the predetermined ink discharge port 12 of the ink jet printer, the ink discharge ports 12 arranged on the lower surface of the other ink jet heads 10 are shield plates 50. The structure is covered and protected.
Then, by the shielding plate 50, the ultraviolet rays emitted from the UV light source 40 and landed on the image print surface 22 of the three-dimensional media are irradiated with the predetermined ink that is ejecting the ink droplets of the inkjet head. The structure prevents the other ink discharge ports 12 other than the discharge ports 12 from being irradiated.

  FIG. 2 shows another preferred embodiment of the printer of the present invention, and FIG. 2 is a schematic configuration diagram thereof. The printer will be described below.

In this printer, ultraviolet rays emitted from the UV light source 40 are reflected on the inner surface of the shielding plate 50 located on the side where the three-dimensional media 20 is supported toward the image print surface 22 of the three-dimensional media on which ink droplets are landed. The reflecting mirror 54 is attached.
Then, in addition to directly irradiating the ultraviolet light emitted from the UV light source 40 toward the image print surface 22 of the three-dimensional media on which the ink droplets are landed, the ultraviolet light emitted from the same UV light source 40 is widely spread around the periphery. Without being dissipated wastefully, the reflecting mirror 54 attached to the inner surface of the shielding plate 50 can be used to reflect the ink droplets toward the image print surface 22 of the three-dimensional media on which ink droplets have landed and efficiently collect them. Has a structure. And it has the structure which can harden the ink droplet efficiently within a short time, without destroying the shape.
The UV light source 40 is provided below the three-dimensional media 20 supported by the support means 30. A trumpet-shaped skirt 56 extends downward around the flat shield plate 50. And the reflecting mirror 54 has the structure stuck on the inner surface of the skirt 56 and the shielding board 50 connected to it with no gap continuously. In addition, the periphery of the UV light source 40 is also covered with a funnel-shaped cover 42, and ultraviolet rays emitted from the UV light source 40 provided on the inner bottom portion of the cover 42 are unnecessarily scattered around the cover 42. Without the shield plate 50 and the skirt 56 being radiated together.
The rest of the configuration is the same as that of the printer shown in FIG. 1, and the operation is also the same.

  FIG. 3 shows another preferred embodiment of the printer of the present invention, and FIG. 3 is a schematic configuration diagram thereof. The printer will be described below.

This printer is provided with an adjustment mechanism 60 for adjusting the separation distance between the UV light source 40 and the image print surface 22 of the three-dimensional media on which ink droplets that irradiate ultraviolet rays emitted from the UV light source 40 are landed. .
The three-dimensional media 20 is supported by the support means 30 below the travel path of the inkjet head 10 and is rotated around the X axis or the Y axis of the support means 30 or moved up and down in the Z direction. The separation distance between the image print surface 22 and the UV light source 40 can be kept substantially constant according to the arrangement state and shape of the image print surface 22 of the three-dimensional media supported by the support means 30. . Then, the amount of ultraviolet light irradiated from the UV light source 40 to the ink droplets ejected from the inkjet head 10 and landed on the image print surface 22 of the three-dimensional media is matched with the arrangement state and shape of the image print surface 22 of the three-dimensional media. Thus, the structure can be kept almost constant. Then, the ink droplet landed on the image print surface 22 of the three-dimensional media has a small amount of ultraviolet light irradiated from the UV light source 40, and the ink droplet flows out to the periphery of the landed portion, and the ink droplet The shape of the three-dimensional media is prevented from collapsing, and conversely, the irradiation amount of the ultraviolet light irradiated from the UV light source 40 to the ink droplet landed on the image print surface 22 of the three-dimensional media becomes too large, and the three-dimensional media 20 It has a structure that can prevent damage caused by
The adjusting mechanism 60 is supported by the support means 30 positioned in front of the UV light source 40 based on the surface shape data of the three-dimensional media 20 stored in a storage circuit (not shown) of a host computer for driving the printer. The image print surface 22 of the three-dimensional media is made to approach or away from the image print surface 22 of the three-dimensional media. An actuator such as a servo motor is used as a drive source for the adjustment mechanism 60. The adjustment mechanism 60 measures the separation distance between the UV light source 40 and the surface of the three-dimensional media 20 positioned in front of the UV light source 40 using an optical sensor (not shown) or the like, and based on the measured value, the UV light source 40. Can be moved closer to or away from the image print surface 22 of the three-dimensional media in front of it.
The rest of the configuration is the same as that of the printer shown in FIG. 1, and the operation is also the same.

  FIG. 4 shows another preferred embodiment of the printer of the present invention, and FIG. 4 is a schematic configuration diagram thereof. The printer will be described below.

In this printer, the inkjet head 10 has a structure in which a plurality of sub heads 11, 13, 15, and 17 that eject different colors of ink are arranged independently of each other. Specifically, the sub head 11 that ejects K (black) ink, the sub head 13 that ejects C (cyan) ink, the sub head 15 that ejects M (magenta) ink, and the Y (yellow) ink The sub-heads 17 that inject the water are arranged in the Y direction (lateral direction) independently of each other at a predetermined interval.
The ink droplets ejected from the sub heads 11, 13, 15, and 17 and landed on the image print surface 22 of the three-dimensional media are irradiated with ultraviolet rays on the side portions of the plurality of sub heads 11, 13, 15, and 17. Each UV light source 40 is provided independently. Specifically, UV light sources 40 are independently provided between the sub heads 11, 13, 15, and 17 and on the outer side portions of the outermost sub heads 11 and 17. At the same time, each UV light source 40 is irradiated from the predetermined sub-head 11, 13, 15 or 17 provided on the side of the UV light source 40 and landed on the surface of the three-dimensional media 20 with ultraviolet rays. Then, the ink droplets are cured while the ink droplets are cured, and the extinguishing means 70 for extinguishing the light droplets is provided during the other periods.
As the UV light source 40, a small UV LED that can be repeatedly turned on and off in a short time as described above is used, or an optical fiber that emits ultraviolet light from the tip is used. As the light-off means 70, an electronic circuit of a host computer for printer drive control is used.
Then, the UV light source 40 is provided on the side portion for a time to turn on each of the UV light sources 40 provided independently on the side portions of the plurality of sub-heads 11, 13, 15, 17 arranged in the inkjet head 10. In addition, the structure is such that the ink droplets ejected from the predetermined sub head 11, 13, 15 or 17 and landed on the image print surface 22 of the three-dimensional media can be limited only to the time of irradiating ultraviolet rays. At other times, the UV light source 40 provided on the side of the sub head 11, 13, 15 or 17 can be turned off. And it has the structure which can prevent that an ultraviolet-ray is continuously emitted from the UV light source 40 provided in the side part of the predetermined sub head 11, 13, 15 or 17 in an unnecessary time zone. Then, the ultraviolet rays emitted unnecessarily during the unnecessary time period are reflected on the surface of a printer component (not shown) and irradiated to unnecessary portions of the three-dimensional media 20, so that the three-dimensional media 20 is It has a structure that can prevent damage caused by ultraviolet rays and useless power consumption.
The rest of the configuration is the same as that of the printer shown in FIG. 1, and the operation is also the same.

  FIG. 5 shows another preferred embodiment of the printer of the present invention, and FIG. 5 is a schematic configuration diagram thereof. The printer will be described below.

In this printer, the UV light source 40 irradiates the ink droplets immediately after landing on the image print surface 22 of the three-dimensional media with ultraviolet rays, and temporarily cures the ink droplets. The main UV light source 46 is configured to continue to irradiate the ink droplets with ultraviolet rays and to permanently cure the ink droplets.
Similar to the printer shown in FIG. 4, the sub UV light source 44 is provided independently on the side portions of the sub heads 11, 13, 15, and 17 that are arranged independently on the inkjet head 10. The main UV light source 46 is provided below the three-dimensional media 20 supported by the support means 30 as in the printer shown in FIG.
Then, the sub-UV light source 44 is used to irradiate the ink droplets immediately after being ejected from the inkjet head 10 and landed on the image print surface 22 of the three-dimensional media, to temporarily cure the ink droplets. It has a possible structure. Then, a structure capable of preventing the ink droplets having a low viscosity immediately after landing on the image print surface 22 of the three-dimensional media from flowing out around the landed portion and collapsing the shape of the ink droplets. I am doing. At that time, an ink droplet is ejected from the predetermined sub head 11, 13, 15 or 17 toward the image print surface 22 of the three-dimensional media through the hole 52 provided in the shielding plate 50, or the predetermined sub head 11. , 13, 15 or 17 can irradiate ultraviolet rays emitted from the sub-UV light source 44 provided on the side portions of the ink droplets landed on the image print surface 22 of the three-dimensional media.
Next, the main UV light source 46 is used to continue to irradiate the temporarily cured ink droplets with ultraviolet rays so that the ink droplets can be completely cured. The image is reliably stabilized and printed on the image print surface 22 of the three-dimensional media on which the ink droplets have landed. In that case, in addition to directly irradiating the ultraviolet ray emitted from the main UV light source 46 toward the image print surface 22 of the three-dimensional media on which the ink droplets are landed, the ultraviolet ray emitted from the same main UV light source 46 is used. Are collected using the reflecting mirror 54 attached to the inner surface of the shielding plate 50 and the skirt 56, and the ink droplets landed on the image print surface 22 of the three-dimensional media can be efficiently irradiated. Further, the shielding plate 50 can prevent the ultraviolet rays emitted from the main UV light source 46 from being irradiated to sub heads other than the predetermined sub heads 11, 13, 15, or 17 that are ejecting ink droplets. is doing. In addition, the ink discharge port 12 of the sub-head has a structure that can prevent ink clogging.
The rest of the configuration is the same as that of the printer shown in FIG. 2, and the operation is also the same.

  The printer of the present invention can be widely used for printing an image on the surface of a three-dimensional media using UV curable ink.

1 is a schematic configuration diagram of a printer of the present invention. 1 is a schematic configuration diagram of a printer of the present invention. 1 is a schematic configuration diagram of a printer of the present invention. 1 is a schematic configuration diagram of a printer of the present invention. 1 is a schematic configuration diagram of a printer of the present invention. It is a schematic block diagram of the conventional printer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Inkjet head 11, 13, 15, 17 Sub head 12 Ink discharge port 20 Three-dimensional media 40 UV light source 42 Cover 44 Sub UV light source 46 Main UV light source 50 Shield plate 52 Shield plate hole 54 Reflector 56 Skirt 60 Adjustment mechanism 70 Light-off means

Claims (5)

While rotating a three-dimensional media supported rotatably around at least one axis
The UV curable ink is discharged from the ink discharge port of the inkjet head facing the three-dimensional media.
By irradiating ultraviolet rays from the UV light source by injecting the ink droplets to the ink droplets are landed on the image printing surface of the solid media, by curing the ink droplets, the image printing surface of the solid medium an inkjet printer for printing an image comprising a plurality of ink dots array,
Between the three-dimensional media and the UV light source and the inkjet head, the ink
A light-shielding plate in which an opening for allowing the discharge port to face the three-dimensional media is formed,
By moving the light shielding plate relative to the inkjet head, an ink liquid is obtained.
After the ink discharge port for performing the droplet ejection operation and the opening are opposed to each other, the opening is opposed to the opening.
An ink jet printer for three-dimensional media printing using UV curable ink, wherein ink droplets are ejected from the ink ejection port and landed on an image print surface . The inkjet head is arranged above the three-dimensional media;
The UV light source is disposed on the side of the three-dimensional media, and purple is provided on the side of the three-dimensional media.
2. The ink jet printer for three-dimensional media printing using UV curable ink according to claim 1 , wherein the external line can be irradiated . The UV light source has a separation distance between the UV light source and the image print surface on the side of the three-dimensional media.
The inkjet printer for three-dimensional media printing using UV curable ink according to claim 2 , wherein the inkjet printer is supported by an adjusting mechanism for adjusting separation . The inkjet head is arranged above the three-dimensional media;
The UV light source is disposed below the three-dimensional media, and a purple color is formed below the three-dimensional media.
It is possible to irradiate external lines,
The light shielding plate includes a cover portion extending downward from an edge portion of the light shielding plate.
The
The inkjet printer for 3D media printing using UV curable ink according to claim 1 , wherein the 3D media and the UV light source are covered by the cover . The light shielding plate is provided with a reflecting member that reflects ultraviolet rays on a surface facing the three-dimensional media.
The inkjet printer for three-dimensional media printing using UV curable ink according to claim 4 , wherein the inkjet printer is configured as described above.

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