WO2022153575A1 - 活性エネルギ照射装置及び活性エネルギ照射システム - Google Patents
活性エネルギ照射装置及び活性エネルギ照射システム Download PDFInfo
- Publication number
- WO2022153575A1 WO2022153575A1 PCT/JP2021/020025 JP2021020025W WO2022153575A1 WO 2022153575 A1 WO2022153575 A1 WO 2022153575A1 JP 2021020025 W JP2021020025 W JP 2021020025W WO 2022153575 A1 WO2022153575 A1 WO 2022153575A1
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- WIPO (PCT)
- Prior art keywords
- active energy
- energy irradiation
- inert gas
- housing
- irradiation device
- Prior art date
Links
- 239000011261 inert gas Substances 0.000 claims abstract description 172
- 239000002184 metal Substances 0.000 claims description 7
- 238000010894 electron beam technology Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 238000010926 purge Methods 0.000 description 50
- 230000005855 radiation Effects 0.000 description 16
- 238000005192 partition Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1042—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head
- A61N5/1045—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head using a multi-leaf collimator, e.g. for intensity modulated radiation therapy or IMRT
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
-
- 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
- B41J11/00218—Constructional details of the irradiation means, e.g. radiation source attached to reciprocating print head assembly or shutter means provided on the radiation source
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
Definitions
- the present disclosure relates to an active energy irradiation device and an active energy irradiation system.
- An active energy irradiation device including an active energy irradiation unit that irradiates an object to be irradiated with an active energy ray and an inert gas supply unit that supplies an inert gas to a region between the object to be irradiated and the active energy irradiation unit. It is known (see, for example, Patent Document 1).
- the region between the irradiated object and the active energy irradiation unit is used in order to suppress the action generated in the irradiated object by the irradiation of the active energy beam from being inhibited by oxygen in the air. Is supplied with an inert gas.
- the inert gas is not uniformly ejected to the object (object to be irradiated).
- a porous portion is provided at the end of the space into which the active gas is introduced (the end facing the object).
- the pressure of the inert gas increases in the space section, there is a structural restriction such as the need to improve the pressure resistance and airtightness of the space section. There is a risk of receiving.
- An object of the present disclosure is to provide an active energy irradiation device and an active energy irradiation system that are not subject to structural restrictions and can uniformly eject an inert gas to an object to be irradiated.
- the active energy irradiation device includes an active energy irradiation unit having an exit surface for emitting active energy rays and an inert gas supply unit having an outlet for ejecting an inert gas.
- the active gas supply unit includes a housing provided with a spout, a connection portion provided in the housing and capable of connecting a pipe for supplying the inert gas into the housing, and a throttle provided in the connection portion. Includes parts and.
- a connection portion is provided in a housing provided with a spout, and a throttle portion is provided in the connection portion.
- the exit surface extends in both the first direction and the second direction perpendicular to the first direction, and is perpendicular to both the first direction and the second direction.
- the active energy ray is emitted to one side of the three directions, and the ejection port is located on one side of the second direction with respect to the exit surface, and the inert gas may be ejected to one side of the third direction. ..
- the active gas is supplied to the region between the object to be irradiated and the active energy irradiation unit. Therefore, it is possible to effectively suppress the mixing of oxygen in the region between the irradiated object and the active energy irradiation portion.
- the spout may have a long shape with the first direction as the longitudinal direction.
- the inert gas can be uniformly ejected to the irradiated object transported from one side in the second direction to the other side in the second direction with respect to the emission surface of the active energy irradiation unit.
- the throttle portion may include a porous filter.
- the flow rate of the inert gas supplied into the housing can be made uniform with a simple structure.
- the porous filter may be formed of a metal sintered body.
- the flow rate of the inert gas supplied into the housing can be made uniform with a simple structure.
- the diaphragm portion may be provided at the connection portion so as to be located inside the housing.
- the diaphragm portion may be provided at the connection portion so as to be located outside the housing. In either case, the flow rate of the inert gas supplied into the housing can be made uniform.
- the throttle portion may have a resistance such that the pressure of the inert gas in the pipe connected to the connection portion is 0.1 MPa or more. As a result, the flow rate of the inert gas supplied into the housing can be effectively made uniform.
- the diaphragm portion may be detachably attached to the connection portion. As a result, the diaphragm portion can be easily replaced and maintained.
- the active energy irradiation unit may emit ultraviolet rays or electron beams as active energy rays.
- the active energy irradiation device can be used as a device for irradiating the irradiated object with ultraviolet rays or electron beams.
- the active energy irradiation system is for supplying an inert gas into each of a plurality of active energy irradiation devices, each of which is the above-mentioned active energy irradiation device, and a housing of the plurality of active energy irradiation devices.
- a first pipe and a plurality of second pipes branched from the first pipe and connected to each connection portion of the plurality of active energy irradiation devices are provided, and the plurality of active energy irradiation devices are arranged in at least one row. They are lined up.
- the flow rate of the inert gas ejected from each of the plurality of inert gas supply units can be made uniform in the direction in which the plurality of active energy irradiation devices are lined up.
- an active energy irradiation device and an active energy irradiation system that are less susceptible to structural restrictions and can uniformly eject an inert gas to an object to be irradiated.
- FIG. 1 is a perspective view of the active energy irradiation system of one embodiment.
- FIG. 2 is a perspective view of the active energy irradiation device shown in FIG.
- FIG. 3 is a perspective view of the active energy irradiation device shown in FIG. 2 as viewed from below.
- FIG. 4 is an exploded perspective view of the active energy irradiation device shown in FIG.
- FIG. 5 is a perspective view showing the internal configuration of the housing in the active energy irradiation device shown in FIG.
- FIG. 6 is a front view showing the flow of air in the active energy irradiation device shown in FIG.
- FIG. 7 is a cross-sectional view of the active energy irradiation device along the line AA shown in FIG. FIG.
- FIG. 8 is an end view of the active energy irradiation device along the line BB shown in FIG.
- FIG. 9 is a cross-sectional view of the inert gas supply portion of the active energy irradiation device shown in FIG.
- FIG. 10 is a cross-sectional view of a part of the active energy irradiation device shown in FIG.
- FIG. 11 is a front view of the active energy irradiation system of Comparative Example and Example.
- FIG. 12 is a front view of the active energy irradiation system of Comparative Example and Example.
- the active energy irradiation system 100 is, for example, a system mounted on a UV (ultraviolet) printer, in which an inert gas is applied to a plurality of active energy irradiation devices 1 and each active energy irradiation device 1.
- a first pipe P for supplying and a plurality of second pipes (pipes) Pa branched from the first pipe P and connected to each active energy irradiation device 1 are provided.
- the plurality of active energy irradiation devices 1 have the same configuration as each other.
- the active energy irradiation device 1 is, for example, a high-power air-cooled LED light source for printing applications.
- the active energy irradiation device 1 irradiates the irradiated object with ultraviolet rays (active energy rays) to dry the ink of the irradiated object and the like.
- ultraviolet rays active energy rays
- Examples of the object to be irradiated include a printed matter to which a photocurable ink is attached.
- the first pipe P and the plurality of second pipes Pa are illustrated by alternate long and short dash lines.
- the active energy irradiation device 1 exhibits a rectangular cuboid outer shape.
- the plurality of active energy irradiation devices 1 are arranged in at least one row. Specifically, the plurality of active energy irradiation devices 1 are arranged in a row so as to abut each other in a predetermined direction.
- a plurality of active energy irradiation devices 1 arranged in a predetermined direction are fixed and held on a fixing plate 11.
- the active energy irradiation system 100 includes a unit composed of a plurality of active energy irradiation devices 1 fixed to the fixed plate 11. As shown in FIGS.
- the active energy irradiation device 1 includes a housing 2, an active energy irradiation unit 3, a heat sink 4, an intake unit 5, an exhaust unit 6, a duct 7, and an inert unit. It includes a gas supply unit 8 and an inert gas suction unit 9.
- the predetermined direction in which the plurality of active energy irradiation devices 1 are lined up is defined as the "X direction” (first direction), and the direction in which the active energy irradiation device 1 emits ultraviolet rays and is perpendicular to the X direction is defined as “X direction”.
- the Z direction is defined as the "third direction perpendicular to both the first and second directions", and the direction orthogonal to the X and Z directions is defined as the "Y direction” (the second direction perpendicular to the first direction).
- the side on which the active energy irradiation device 1 emits ultraviolet rays is referred to as the "lower side” (one side in the Z direction), and the opposite side is referred to as the "upper side”.
- One side in the Y direction is referred to as the "front side”
- the other side in the Y direction is referred to as the "rear side”.
- the housing 2 has a long rectangular shape in the Z direction.
- the housing 2 is made of metal.
- the housing 2 accommodates and supports the active energy irradiation unit 3, the heat sink 4, and the duct 7.
- the housing 2 is configured by assembling the front case 21 and the rear case 22 to each other.
- the upper wall 2a of the housing 2 is provided with a grip portion 23 for gripping the housing 2.
- a driver board 12 having a thickness direction in the Y direction is arranged on the rear side inside the housing 2.
- the driver board 12 is a drive electric circuit board for driving the active energy irradiation device 1.
- a heat sink 13 for a driver board that cools a transistor or the like of the driver board 12 is arranged on the driver board 12.
- the driver board heat sink 13 is thermally connected to a transistor or the like of the driver board 12.
- the active energy irradiation unit 3 includes a rectangular plate-shaped substrate 31 constituting a predetermined circuit, and an LED element 32 which is a light emitting element arranged side by side at a predetermined pitch in the X direction and the Y direction on the substrate 31.
- the LED element 32 emits ultraviolet rays downward.
- the active energy irradiation unit 3 is arranged at the lower end portion inside the housing 2 with the thickness direction of the substrate 31 in the Z direction.
- the plurality of substrates 31 are arranged in the X direction. As a result, several to several hundred LED elements 32 are arranged in the X direction and the Y direction inside the housing 2.
- Ultraviolet rays emitted from each LED element 32 of the active energy irradiation unit 3 irradiate an object to be irradiated moving in the Y direction through a light irradiation window 24 made of a glass plate provided on the lower wall 2b of the housing 2. Will be done.
- the plurality of substrates 31 may be arranged in the X direction and the Y direction.
- the heat sink 4 is a heat radiating member thermally connected to the LED element 32 of the active energy irradiation unit 3.
- the heat sink 4 is an air-cooled heat sink that dissipates heat by exchanging heat with air.
- the air constitutes a heat medium (refrigerant) for cooling the LED element 32.
- the heat sink 4 has a base plate 41, heat radiation fins 42, a heat pipe 43, and a partition plate (partition member) 44.
- the base plate 41 has a rectangular plate shape.
- An active energy irradiation unit 3 is provided on the lower surface of the base plate 41.
- the lower surface of the base plate 41 comes into contact with the substrate 31 of the active energy irradiation unit 3.
- the heat radiation fin 42 has a flat plate shape with the Y direction as the thickness direction.
- the heat radiation fins 42 are erected on the upper surface (surface) of the base plate 41.
- the heat radiating fins 42 are arranged so as to be laminated with a gap in the Y direction.
- the heat pipe 43 is provided so as to be embedded in a plurality of heat radiation fins 42.
- the heat pipe 43 is thermally connected to the plurality of heat radiation fins 42.
- the partition plate 44 is provided so as to intersect the plurality of heat radiation fins 42.
- the partition plate 44 has a flat plate shape with the X direction as the thickness direction.
- the partition plate 44 partitions a plurality of heat radiation fins 42 in the X direction.
- a pair of partition plates 44 are provided on a plurality of heat radiation fins 42 so as to be separated from each other in the X direction.
- the pair of partition plates 44 divides the plurality of heat radiation fins 42 into a pair of outer portions 42x located on the outer side in the X direction and an inner portion 42y located between the pair of outer portions.
- the end of the partition plate 44 on the base plate 41 side is separated from the base plate 41. That is, the partition plate 44 has a plurality of heat radiation fins 42 such that air passes in the X direction on the lower side (base plate 41 side) rather than on the upper side (opposite side to the base plate 41 side) among the plurality of heat radiation fins 42. Partition.
- the partition plate 44 is brazed and fixed to a plurality of heat radiation fins 42.
- the heat sink 4 is attached to the housing 2 via the bracket 25 and the support frame 26 (see FIG. 7).
- the intake unit 5 introduces air from the outside of the housing 2 to the inside of the housing 2.
- the intake unit 5 introduces air into the buffer space BF, which will be described later, inside the housing 2.
- the intake portion 5 is provided in a portion of the housing 2 near the center upper side of the front wall portion 2c.
- the intake unit 5 has an intake filter (filter unit) 51, a filter holding unit 52, and an intake port 53.
- the intake filter 51 collects foreign matter (dust, etc.) contained in the air introduced into the housing 2.
- the intake filter 51 is made of, for example, urethane or the like.
- the intake filter 51 has a rectangular plate-like outer shape.
- the intake filter 51 extends to a portion closer to the upper center of the wall portion 2c when viewed from the front side.
- the filter holding unit 52 accommodates and holds the intake filter 51.
- the filter holding portion 52 has a rectangular plate-shaped outer plate 52x whose thickness direction is the Y direction.
- the front surface of the outer plate 52x is located on the same plane as the front surface of the wall portion 2c of the housing 2.
- the filter holding portion 52 is detachably attached to the duct 7 and the support frame 27 provided in the duct 7.
- the intake port 53 is a through hole that opens along the Y direction (the direction that intersects the direction from the heat sink 4 to the exhaust portion 6) and leads to the inside of the housing 2.
- the intake ports 53 are arranged side by side in close proximity to each other in the regions at both ends of the outer plate 52x in the X direction.
- the intake port 53 is an elongated through hole having the Z direction as the longitudinal direction. The air sucked from the intake port 53 is introduced into the buffer space BF inside the housing 2 via the intake filter 51 (see FIG. 8).
- the exhaust unit 6 exhausts air from the inside of the housing 2 to the outside of the housing 2.
- the exhaust portion 6 is provided at the upper end portion of the housing 2.
- the exhaust unit 6 has a fan 61.
- As the fan 61 for example, an axial flow fan is used.
- the fan 61 pumps the air sucked from the lower side along the Z direction to the upper side along the Z direction.
- the fan 61 is fixed to the upper end portion inside the housing 2.
- An exhaust filter 62 made of, for example, urethane or the like is attached to the upper wall 2a of the housing 2 on the discharge side of the fan 61.
- the exhaust filter 62 is shown only in FIG. 2 for convenience, and the display in other figures is omitted.
- an external pipe (not shown) for exhausting to the outside is connected to the discharge side of the fan 61 in the exhaust unit 6.
- the duct 7 is provided between the heat sink 4 and the exhaust portion 6 inside the housing 2.
- the duct 7 circulates the air that has passed through the heat sink 4 to the exhaust unit 6.
- the duct 7 circulates the inert gas that has passed through the heat sink 4 to the exhaust unit 6.
- the duct 7 has a rectangular tube shape.
- the duct 7 has a straight portion 71 having a constant cross-sectional area and extending in the Z direction, and an enlarged portion 72 provided on the downstream side of the straight portion 71 and extending in the Z direction so that the cross-sectional area increases toward the downstream side.
- a buffer space BF (see FIG. 8), which is a space in which air is introduced from the outside by the intake unit 5, is provided on one side and the other side of the duct 7 in the X direction inside the housing 2.
- the buffer space BF is a space defined by the inner surface of the housing 2 and the outer surface of the straight portion 71 and the enlarged portion 72 of the duct 7.
- the lower end of the duct 7 is inserted and fixed in a groove 47 formed in the heat radiation fin 42 of the heat sink 4.
- the upper end of the duct 7 is fixed to the suction side of the fan 61.
- the duct 7 is attached to the housing 2 via the support frame 27.
- the inert gas supply unit 8 supplies the inert gas to the outside of the housing 2.
- the inert gas include nitrogen.
- the inert gas supply unit 8 forms a region in which the inert gas is dominant (a region having a low oxygen concentration) in a region including an ultraviolet irradiation region from the plurality of LED elements 32. do.
- the inert gas supply unit 8 is attached to the lower end portion of the front wall portion 2c of the housing 2.
- the inert gas supply unit 8 includes a purge housing (housing) 81, a socket (connection part) 82, and a throttle unit 88.
- the purge housing (housing) 81 is provided with a spout 83.
- the purge housing 81 has, for example, a rectangular box shape.
- a second pipe Pa is connected to the socket 82. That is, the socket 82 is a connection portion to which the second pipe Pa for supplying the inert gas into the purge housing 81 can be connected.
- the inert gas is introduced from the second pipe Pa through the socket 82 and the throttle portion 88 into the purge housing 81, and the inert gas is ejected from the ejection port 83.
- the inert gas suction unit 9 sucks the inert gas outside the housing 2 and causes it to flow into the housing 2.
- the inert gas suction unit 9 is a structure attached to the housing 2.
- the inert gas suction portion 9 is detachably attached to the rear side of the lower wall 2b of the housing 2 by a fastener such as a screw.
- the inert gas suction unit 9 includes a rectangular box-shaped suction unit housing 91, a suction port 92 provided on the lower surface of the suction unit housing 91, and a recovery flow path 93 provided inside the suction unit housing 91. And (see FIG. 7). In the inert gas suction unit 9, the inert gas is sucked into the suction unit housing 91 through the suction port 92, and the inert gas is circulated to the inside of the housing 2 through the recovery flow path 93.
- the air introduced into the buffer space BF flows downward along the Z direction and then passes through the heat sink 13 for the driver substrate.
- the air that has passed through the heat sink 13 for the driver board joins the flow of the inner portion 42y of the heat sink 4 through the space on the lower rear side inside the housing 2, and is between the plurality of heat radiation fins 42 of the inner portion 42y. It flows upward along the Z direction and flows into the duct 7.
- the air that has flowed into the inside of the duct 7 flows upward along the Z direction and is discharged to the outside of the housing 2 via the fan 61.
- the inert gas ejected from the inert gas supply unit 8 is sucked by the inert gas suction unit 9 and flows into the inside of the housing 2.
- the inert gas that has flowed into the inside of the housing 2 joins the flow of the inner portion 42y of the heat sink 4 through the space on the lower rear side inside the housing 2, and the heat radiating fins 42 of the inner portion 42y It flows upward with air along the Z direction and flows into the duct 7.
- the inert gas that has flowed into the inside of the duct 7 flows upward together with the air along the Z direction, and is discharged to the outside of the housing 2 together with the air through the fan 61.
- inert gas supply unit 8 The configuration of the inert gas supply unit 8 will be described in more detail with reference to FIGS. 9 and 10.
- the inert gas supply unit 8 is an inert gas (in FIGS. 9 and 10) on the irradiated object S being conveyed from the front side to the rear side by a conveyor (not shown).
- the inert gas is supplied to the region R between the irradiated object S and the active energy irradiation unit 3.
- the reason for supplying the inert gas to the region R is to suppress the action generated in the irradiated object S by the irradiation of the ultraviolet rays emitted from the active energy irradiation unit 3 by oxygen in the air.
- the irradiated object S is a printed matter to which a photocurable ink is attached.
- the ink is ejected onto the object to be irradiated S from an ink head (not shown) on the upstream side (front side) of the active energy irradiation device 1, and is cured by irradiation with ultraviolet rays emitted from the active energy irradiation unit 3. Be made to.
- the inert gas supply unit 8 is inert to the region R between the irradiated object S and the active energy irradiation unit 3. Supply gas.
- the inert gas supply unit 8 has a rectifying plate 84 in the purge housing 81.
- a socket 82 and a throttle portion 88 are provided on the purge upper surface 81a of the purge housing 81.
- the socket 82 has a flow path 82a for the inert gas.
- the throttle portion 88 has a flow path 88a for the inert gas.
- the throttle portion 88 is provided in the socket 82 so that the flow path 82a and the flow path 88a communicate with each other.
- the throttle portion 88 is provided in the socket 82 so as to be located in the purge housing 81.
- the diaphragm portion 88 is detachably attached to the socket 82.
- the upper end portion of the throttle portion 88 is attached to the lower end portion of the socket 82 by a fastening structure such as a screw.
- the drawing portion 88 includes a porous filter 89.
- the porous filter 89 is arranged in the flow path 88a so that a gap is not formed between the inner surface of the flow path 88a and the outer surface of the porous filter 89.
- the porous filter 89 is formed of a metal sintered body.
- the throttle portion 88 has a resistance that the pressure of the inert gas in the second pipe Pa becomes 0.1 MPa or more.
- a straightening vane 84 is fixed to the purge front surface 81b of the purge housing 81.
- the straightening vane 84 includes a first vertical plane 85, a slope 86, and a second vertical plane 87.
- the purge bottom surface 81c of the purge housing 81 forms a part of the spout 83. That is, the spout 83 is provided on the purge bottom surface 81c of the purge housing 81.
- the purge back surface 81d of the purge housing 81 is in contact with the front surface of the wall portion 2c of the housing 2.
- the straightening vane 84 cooperates with the purge housing 81 to form a flow path through which the inert gas passes.
- the inert gas supply unit 8 includes a first flow path portion 8a and a second flow path portion 8b.
- the inert gas received from the socket 82 and the throttle portion 88 passes through the first flow path portion 8a, then passes through the second flow path portion 8b, and is finally ejected from the ejection port 83.
- the first flow path portion 8a receives the inert gas from the socket 82 and the throttle portion 88 and provides the inert gas to the second flow path portion 8b.
- the first flow path portion 8a is a region surrounded by the purge upper surface 81a, the first vertical surface 85, the slope 86, and the purge back surface 81d.
- the first flow path portion 8a includes a portion where the flow path area decreases along the direction in which the inert gas flows.
- the first flow path portion 8a includes a portion between the first vertical surface 85 and the purge back surface 81d, and a portion between the slope 86 and the purge back surface 81d.
- the distance between the first vertical surface 85 and the purge back surface 81d is constant.
- the flow path area is constant.
- the slope 86 is inclined with respect to the Z direction.
- the lower side 86a of the slope 86 is located on the rear side in the Y direction with respect to the upper side 86b of the slope 86.
- the flow path area gradually decreases as it approaches the second flow path portion 8b.
- the socket 82 is provided on the purge upper surface 81a so that the axis L of the socket 82 and the throttle portion 88 is located substantially in the center between the purge front surface 81b and the purge back surface 81d. That is, the axis L of the socket 82 and the throttle portion 88 intersects the slope 86. In other words, the axis L of the socket 82 and the throttle portion 88 is located between the lower side 86a and the upper side 86b of the slope 86 in the Y direction. As a result, the flow of the inert gas received from the socket 82 and the throttle 88 collides with the slope 86. Then, the inert gas flows toward the rear side in the Y direction along the slope 86 and reaches the second flow path portion 8b.
- the second flow path portion 8b receives the inert gas from the first flow path portion 8a and provides the inert gas to the ejection port 83. In other words, the second flow path portion 8b guides the inert gas toward the irradiated object S side along the Z direction.
- the second flow path portion 8b is a region surrounded by the second vertical surface 87 and the purge back surface 81d.
- the region between the upper side of the second vertical plane 87 (ie, the lower side 86a of the slope 86) and the purge back surface 81d receives the compressed inert gas.
- the distance between the second vertical surface 87 and the purge back surface 81d is constant. That is, the flow path area of the second flow path portion 8b is constant.
- the flow path area of the second flow path portion 8b is smaller than the flow path area of the portion of the first flow path portion 8a between the first vertical surface 85 and the purge back surface 81d.
- the flow path area of the second flow path portion 8b is the same as the flow path area of the portion of the first flow path portion 8a between the lower side 86a of the slope 86 and the purge back surface 81d.
- the end of the second flow path portion 8b corresponds to the spout 83.
- the spout 83 is formed between the lower end 87a of the second vertical surface 87 and the lower end 81e of the purge back surface 81d.
- the rear end 81f of the purge bottom surface 81c may be a part of what constitutes the spout 83.
- the inert gas ejected from the ejection port 83 onto the irradiated object S changes the flow direction after colliding with the irradiated object S.
- a part of the inert gas flows toward the rear side and is supplied to the region R (see FIG. 10) between the irradiated object S and the active energy irradiation unit 3.
- Another part of the inert gas flows toward the front side and suppresses the inflow of air into the region R (see FIG. 10) between the irradiated object S and the active energy irradiation unit 3.
- the flow path area of the first flow path portion 8a is larger than the flow path areas of the socket 82 and the second flow path portion 8b, respectively.
- the rectifying plate 84 arranged so as to intersect the axis L of the socket 82 and the throttle portion 88 in the flow path portion 8a obstructs the flow of the inert gas received from the socket 82.
- the flow of the inert gas received from the socket 82 spreads in the X direction, and as a result, the distribution of the flow rate of the inert gas ejected from the ejection port 83 is made uniform in the X direction. Therefore, the inert gas can be efficiently supplied to the region R (see FIG.
- the straightening vane 84 has a slope 86 as a surface that obstructs the flow of the inert gas. That is, the straightening vane 84 realizes a flow path configuration in which the flow path area is gradually reduced. As a result, the operating noise of the inert gas supply unit 8 can be reduced.
- the housing 2 the active energy irradiation unit 3, the inert gas supply unit 8 and the inert gas suction unit 9 will be described in more detail with reference to FIGS. 3 and 10.
- the active energy irradiation unit 3 has an emission surface 30 that emits ultraviolet rays on the lower side.
- the exit surface 30 is the lower surface (outer surface) of the light irradiation window 24.
- the exit surface 30 extends in both the X direction and the Y direction.
- the exit surface 30 is a surface perpendicular to the Z direction and has a rectangular shape with the X direction as the longitudinal direction.
- the inert gas supply unit 8 has an outlet 83 for ejecting the inert gas on the lower side.
- the spout 83 has a long shape with the X direction as the longitudinal direction.
- the ejection port 83 has a slit shape extending in the X direction.
- the width of the spout 83 in the X direction is about 100 mm
- the width of the spout 83 in the Y direction is about 5 mm.
- the spout 83 is located on the front side with respect to the exit surface 30.
- the inert gas supply unit 8 includes an ejection portion 80 provided with an ejection port 83.
- the ejection portion 80 is a portion of the inert gas supply portion 8 that projects downward with respect to the exit surface 30 (a portion below the alternate long and short dash line shown in FIGS. 3 and 10).
- the outer shape of the ejection portion 80 has a rectangular plate shape with the X direction as the longitudinal direction and the Z direction as the thickness direction.
- the inert gas supply unit 8 is attached to the housing 2 (specifically, the front wall portion 2c) so that the ejection portion 80 is located below the exit surface 30 in the Z direction.
- the inert gas suction unit 9 includes a projecting portion 90 projecting downward with respect to the exit surface 30.
- the protruding portion 90 is located on the rear side with respect to the exit surface 30.
- the entire inert gas suction unit 9 is the protruding portion 90.
- the inert gas suction unit 9 has a housing 2 (specifically, lower) so that the protruding portion 90 (that is, the entire inert gas suction unit 9) is located below the exit surface 30 in the Z direction. It is attached to the wall 2b).
- the inert gas suction unit 9 includes a suction unit housing 91 provided with a plurality of suction ports 92.
- the outer shape of the suction unit housing 91 has a rectangular plate shape with the X direction as the longitudinal direction and the Z direction as the thickness direction.
- the lower surface (outer surface) of the lower wall 2b is exposed between the exit surface 30 and the ejection portion 80, and between the emission surface 30 and the projecting portion 90. ..
- the distance between the exit surface 30 and the protruding portion 90 in the Y direction is smaller than the distance between the exit surface 30 and the ejection portion 80 in the Y direction.
- the lower surface of the lower wall 2b and the surface of the protruding portion 90 are surfaces that absorb ultraviolet rays.
- the lower surface of the lower wall 2b and the surface of the protruding portion 90 may be a black painted surface, a black treated surface, or a surface of a black material. You may.
- the width of the protruding portion 90 in the Y direction is larger than the width of the protruding portion 90 in the Z direction.
- the width of the protruding portion 90 in the Y direction is 9 times or more the width of the protruding portion 90 in the Z direction.
- the width of the protruding portion 90 in the Y direction is preferably 8 times or more, more preferably 10 times or more the width of the protruding portion 90 in the Z direction.
- the width of the ejected portion 80 in the Z direction is larger than the width of the protruding portion 90 in the Z direction.
- the width of the active energy irradiation unit 3 in the X direction, the width of the inert gas supply unit 8 in the X direction, and the width of the inert gas suction unit 9 in the X direction are each equal to or less than the width of the housing 2 in the X direction. ..
- the width of the ejection port 83 in the X direction and the width of the protruding portion 90 in the X direction are each equivalent to the width of the exit surface 30 in the X direction.
- “equivalent” means that they are substantially equal, and for example, the width of the ejection port 83 in the X direction and the width of the protruding portion 90 in the X direction are 95 of the width of the exit surface 30 in the X direction.
- the width of the ejection port 83 in the X direction and the width of the protruding portion 90 in the X direction may be smaller than the width of the exit surface 30 in the X direction.
- the width of the ejection port 83 in the X direction and the width of the protruding portion 90 in the X direction are each preferably 90% or more, more preferably 100% or more of the width of the exit surface 30 in the X direction. Even more preferably, it is 110% or more.
- the socket 82 is provided in the purge housing 81 provided with the ejection port 83, and the throttle portion 88 is provided in the socket 82.
- the inert gas flowing into the purge housing 81 from the second pipe Pa via the socket 82 is throttled. Since the gas passes through the part 88, the flow rate of the inert gas supplied into the purge housing 81 is made uniform, and as a result, the flow rate of the inert gas ejected from the ejection port 83 is also made uniform.
- the inert gas can be uniformly ejected to the irradiated object S without being subject to structural restrictions.
- the emission surface 30 of the active energy irradiation unit 3 extends in both the X direction and the Y direction, emits active energy rays downward, and ejects the ejection port 83 of the inert gas supply unit 8. Is located on the front side with respect to the exit surface 30, and ejects the inert gas to the lower side.
- the inert gas ejected from the ejection port 83 of the inert gas supply unit 8 is generated. It is supplied to the region R between the irradiated object S and the active energy irradiation unit 3. Therefore, it is possible to effectively suppress the mixing of oxygen into the region R between the irradiated object S and the active energy irradiation unit 3.
- the ejection port 83 has a long shape with the X direction as the longitudinal direction. As a result, the inert gas can be uniformly ejected to the irradiated object S transported from the front side to the rear side with respect to the emission surface 30 of the active energy irradiation unit 3.
- the throttle portion 88 includes the porous filter 89.
- the flow rate of the inert gas supplied into the purge housing 81 can be made uniform with a simple structure.
- the porous filter 89 is formed of a metal sintered body.
- the flow rate of the inert gas supplied into the purge housing 81 can be made uniform with a simple structure.
- the throttle portion 88 is provided in the socket 82 so as to be located in the purge housing 81.
- the flow rate of the inert gas supplied into the purge housing 81 can be made uniform.
- the throttle portion 88 has a resistance that the pressure of the inert gas in the second pipe Pa becomes 0.1 MPa or more. As a result, the flow rate of the inert gas supplied into the purge housing 81 can be effectively made uniform.
- the diaphragm portion 88 is detachably attached to the socket 82. As a result, the diaphragm portion 88 can be easily replaced and maintained.
- the active energy irradiation unit 3 emits ultraviolet rays as active energy rays.
- the active energy irradiation device 1 can be used as a device for irradiating the irradiated object S with ultraviolet rays.
- the flow rate of the inert gas ejected from the inert gas supply unit 8 of each active energy irradiation device 1 is made uniform in the direction in which the plurality of active energy irradiation devices 1 are lined up (that is, the X direction). can do.
- FIG. 11A is a front view of the active energy irradiation system 200A of the comparative example
- FIG. 11B is a front view of the active energy irradiation system 100A of the embodiment.
- the plurality of inert gas supply units 8A, 8B, 8C, 8D and 8E are on the upstream side of the first pipe P. They are arranged in this order.
- the second pipe P1 is connected to the socket 82 of the inert gas supply unit 8A.
- the second pipe P2 is connected to the socket 82 of the inert gas supply unit 8B.
- the second pipe P3 is connected to the socket 82 of the inert gas supply unit 8C.
- the second pipe P4 is connected to the socket 82 of the inert gas supply unit 8D.
- the second pipe P5 is connected to the socket 82 of the inert gas supply unit 8E.
- Each of the second pipes P1, P2, P3, P4 and P5 corresponds to the second pipe Pa shown in FIGS. 1 and 9.
- the plurality of second pipes P1, P2, P3, P4, and P5 are branched from the first pipe P in this order from the upstream side of the first pipe P.
- the throttle portion 88 is not provided in the socket 82 in each of the inert gas supply units 8A, 8B, 8C, 8D, and 8E. ..
- the throttle portion 88 is provided in the socket 82 in each of the inert gas supply portions 8A, 8B, 8C, 8D, 8E. ..
- the plurality of active energy irradiation devices 1 have the same configuration as each other.
- the pipe that branches on the downstream side of the first pipe P among the plurality of second pipes P1, P2, P3, P4, P5 Since the pressure of the inert gas becomes high, the device arranged on the downstream side of the first pipe P among the plurality of inert gas supply units 8A, 8B, 8C, 8D, 8E is not ejected from the ejection port 83. The flow rate of active gas increases.
- FIG. 11B in the active energy irradiation system 100A of the embodiment, on the downstream side of the first pipe P among the plurality of second pipes P1, P2, P3, P4, P5.
- FIG. 12A is a front view of the active energy irradiation system 200B of the comparative example
- FIG. 12B is a front view of the active energy irradiation system 100B of the embodiment.
- the plurality of inert gas supply units 8A, 8B, 8C, 8D and 8E are arranged in this order. ..
- the second pipe P1 is connected to the socket 82 of the inert gas supply unit 8A.
- the second pipe P2 is connected to the socket 82 of the inert gas supply unit 8B.
- the second pipe P3 is connected to the socket 82 of the inert gas supply unit 8C.
- the second pipe P4 is connected to the socket 82 of the inert gas supply unit 8D.
- the second pipe P5 is connected to the socket 82 of the inert gas supply unit 8E.
- Each of the second pipes P1, P2, P3, P4 and P5 corresponds to the second pipe Pa shown in FIGS. 1 and 9. It is assumed that the inert gas is supplied to each of the second pipes P1, P2, P3, P4 and P5 at the same flow rate.
- the positions where the throttle portions 88 are provided are different from each other in the inert gas supply portions 8A, 8B, 8C, 8D, and 8E.
- the throttle portion 88 is provided in the socket 82.
- the throttle portion 88 is provided in the middle of the second pipe Pa.
- the distances from the socket 82 to the throttle portion 88 are different from each other.
- the distances from the socket 82 to the throttle portion 88 are equal to each other, but in the inert gas supply unit 8E, the second pipe Pa is bent between the socket 82 and the throttle portion 88. ..
- the throttle portion 88 is provided in the socket 82 in each of the inert gas supply portions 8A, 8B, 8C, 8D, 8E. ..
- the plurality of active energy irradiation devices 1 have the same configuration as each other.
- the distance from the socket 82 to the throttle 88 among the plurality of inert gas supply units 8A, 8B, 8C, 8D, 8E is The larger the size, the smaller the flow rate of the inert gas ejected from the ejection port 83.
- the inert gas supply units 8C and 8E in which the distances from the socket 82 to the throttle unit 88 are equal to each other the inert gas supply unit 8E in which the second pipe Pa is bent between the socket 82 and the throttle unit 88 sprays more. The flow rate of the inert gas ejected from the outlet 83 is reduced.
- each of the active energy irradiation systems 100B of the embodiment is affected by the action of the throttle portion 88 described above regardless of whether the second pipe Pa is bent or not.
- the flow rate of the inert gas ejected from the ejection port 83 of the inert gas supply units 8A, 8B, 8C, 8D, 8E becomes uniform.
- the socket 82 and the throttle portion 88 are not limited to the purge upper surface 81a, and may be provided at any position of the purge housing 81.
- the spout 83 is not limited to the purge bottom surface 81c, and may be provided at any position of the purge housing 81.
- the throttle portion 88 may be provided in the socket 82 so as to be located outside the purge housing 81. Also in this case, the flow rate of the inert gas supplied into the purge housing 81 can be made uniform.
- the porous filter 89 is not limited to the one formed of the metal sintered body, and may be formed of ceramic, resin, or the like.
- the drawing portion 88 is not limited to the one including the porous filter 89, and may be a drawing (aperture) formed of a microhole component, a metal, a resin, or the like.
- the active energy irradiation unit 3 is not limited to ultraviolet rays, and may emit other active energy rays such as an electron beam. That is, in the above description, “ultraviolet rays” can be read as “electron rays” or “active energy rays”.
- Active energy irradiation device 3 ... Active energy irradiation unit, 30 ... Exit surface, 8 ... Inert gas supply unit, 81 ... Purge housing (housing), 82 ... Socket (connection part), 83 ... Spout, 88 ... squeezing part, 89 ... porous filter, 100 ... active energy irradiation system, P ... first pipe, Pa ... second pipe (pipe).
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Abstract
Description
Claims (11)
- 活性エネルギ線を出射する出射面を有する活性エネルギ照射部と、
不活性ガスを噴出する噴出口を有する不活性ガス供給部と、を備え、
前記不活性ガス供給部は、
前記噴出口が設けられた筐体と、
前記筐体に設けられ、前記筐体内に前記不活性ガスを供給するための配管の接続が可能な接続部と、
前記接続部に設けられた絞り部と、を含む、活性エネルギ照射装置。 - 前記出射面は、第1方向及び前記第1方向に垂直な第2方向の両方向に拡がっており、前記第1方向及び前記第2方向の両方向に垂直な第3方向の一方側に活性エネルギ線を出射し、
前記噴出口は、前記出射面に対して前記第2方向の一方側に位置しており、前記第3方向の前記一方側に不活性ガスを噴出する、請求項1に記載の活性エネルギ照射装置。 - 前記噴出口は、前記第1方向を長手方向とする長尺状を呈している、請求項2に記載の活性エネルギ照射装置。
- 前記絞り部は、多孔質フィルタを含む、請求項1~3のいずれか一項に記載の活性エネルギ照射装置。
- 前記多孔質フィルタは、金属焼結体によって形成されている、請求項4に記載の活性エネルギ照射装置。
- 前記絞り部は、前記筐体内に位置するように前記接続部に設けられている、請求項1~5のいずれか一項に記載の活性エネルギ照射装置。
- 前記絞り部は、前記筐体外に位置するように前記接続部に設けられている、請求項1~5のいずれか一項に記載の活性エネルギ照射装置。
- 前記絞り部は、前記接続部に接続される前記配管内における前記不活性ガスの圧力が0.1MPa以上となる抵抗を有する、請求項1~7のいずれか一項に記載の活性エネルギ照射装置。
- 前記絞り部は、前記接続部に着脱可能に取り付けられている、請求項1~8のいずれか一項に記載の活性エネルギ照射装置。
- 前記活性エネルギ照射部は、前記活性エネルギ線として紫外線又は電子線を出射する、請求項1~9のいずれか一項に記載の活性エネルギ照射装置。
- それぞれが請求項1~10のいずれか一項に記載の活性エネルギ照射装置である複数の活性エネルギ照射装置と、
前記複数の活性エネルギ照射装置のそれぞれの前記筐体内に前記不活性ガスを供給するための第1配管と、
前記第1配管から分岐しており、前記複数の活性エネルギ照射装置のそれぞれの前記接続部に接続された複数の第2配管と、を備え、
前記複数の活性エネルギ照射装置は、少なくとも一列に並べられている、活性エネルギ照射システム。
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EP21919468.5A EP4249111A1 (en) | 2021-01-13 | 2021-05-26 | Active energy irradiation device and active energy irradiation system |
IL303867A IL303867A (en) | 2021-01-13 | 2021-05-26 | Active energy radiation device, and active energy radiation system |
US18/269,318 US20240050919A1 (en) | 2021-01-13 | 2021-05-26 | Active energy irradiation device and active energy irradiation system |
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JP2000009900A (ja) * | 1998-06-26 | 2000-01-14 | Toyo Ink Mfg Co Ltd | 電子線照射装置および電子線照射方法 |
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WO2003081657A1 (fr) * | 2002-03-27 | 2003-10-02 | Tokyo Electron Limited | Dispositif de traitement, electrode, plaque electrode et procede de traitement |
JP2011235210A (ja) * | 2010-05-06 | 2011-11-24 | Shin-Etsu Chemical Co Ltd | Uvオゾン洗浄装置 |
WO2017170949A1 (ja) | 2016-03-30 | 2017-10-05 | 京セラ株式会社 | 光照射装置および印刷装置 |
WO2020022424A1 (ja) * | 2018-07-27 | 2020-01-30 | 京セラ株式会社 | 光照射装置および印刷装置 |
JP2021035759A (ja) * | 2019-08-26 | 2021-03-04 | 浜松ホトニクス株式会社 | 活性エネルギ照射ユニット及び活性エネルギ照射装置 |
-
2021
- 2021-01-13 JP JP2021003348A patent/JP2022108391A/ja active Pending
- 2021-05-26 US US18/269,318 patent/US20240050919A1/en active Pending
- 2021-05-26 WO PCT/JP2021/020025 patent/WO2022153575A1/ja active Application Filing
- 2021-05-26 IL IL303867A patent/IL303867A/en unknown
- 2021-05-26 EP EP21919468.5A patent/EP4249111A1/en active Pending
Patent Citations (8)
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JP2000009900A (ja) * | 1998-06-26 | 2000-01-14 | Toyo Ink Mfg Co Ltd | 電子線照射装置および電子線照射方法 |
JP2002524239A (ja) * | 1998-09-09 | 2002-08-06 | フュージョン・ユーヴィー・システムズ・インコーポレイテッド | 不活性雰囲気チャンバを用いた紫外線硬化装置 |
JP2001113163A (ja) * | 1999-10-20 | 2001-04-24 | Hoya Schott Kk | 紫外光照射装置及び方法 |
WO2003081657A1 (fr) * | 2002-03-27 | 2003-10-02 | Tokyo Electron Limited | Dispositif de traitement, electrode, plaque electrode et procede de traitement |
JP2011235210A (ja) * | 2010-05-06 | 2011-11-24 | Shin-Etsu Chemical Co Ltd | Uvオゾン洗浄装置 |
WO2017170949A1 (ja) | 2016-03-30 | 2017-10-05 | 京セラ株式会社 | 光照射装置および印刷装置 |
WO2020022424A1 (ja) * | 2018-07-27 | 2020-01-30 | 京セラ株式会社 | 光照射装置および印刷装置 |
JP2021035759A (ja) * | 2019-08-26 | 2021-03-04 | 浜松ホトニクス株式会社 | 活性エネルギ照射ユニット及び活性エネルギ照射装置 |
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JP2022108391A (ja) | 2022-07-26 |
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