JP4356357B2 - Inkjet recording device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inkjet recording apparatus, and more particularly to an inkjet recording apparatus that can protect a maintenance unit from ultraviolet rays from a light source.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an image recording apparatus using an inkjet method (hereinafter referred to as “inkjet recording apparatus”) is known as an image recording unit that can record an image easily and inexpensively. This ink jet recording apparatus includes a recording head that discharges ultraviolet curable ink as small droplets on a recording medium, and a light source for curing the ink discharged on the recording medium. Is moved on the recording medium to record an image on the recording medium (see, for example, Patent Document 1).
[0003]
However, in such an ink jet recording apparatus, when image recording is continuously performed, the ink that is ejected from the ink ejection port of the recording head and atomized is attached to the ejection port and the vicinity of the ejection port of the recording head. When the image recording is continued in such a state, it may cause clogging such as accumulation and clogging of the discharge port.
[0004]
For this reason, in recent inkjet recording apparatuses, a maintenance unit that removes ink adhering to and near the ejection port of the recording head is installed in order to recover clogging of the recording head and perform normal image recording. .
This maintenance unit includes a cap member that sucks and removes ink clogged in the discharge port and a wipe member that wipes and cleans the ink discharge surface.
The maintenance operation performed by the cap member and the wipe member described above is performed by moving the carriage to the maintenance area where the maintenance unit is disposed.
[0005]
[Patent Document 1]
JP-A-60-132767 [0006]
[Problems to be solved by the invention]
However, since the maintenance operation is performed after the carriage is moved to the maintenance area, the cap member and the wipe member constituting the maintenance unit are directly irradiated with ultraviolet rays from the light source mounted on the carriage. Since the cap member and the wipe member use parts that deteriorate due to ultraviolet rays, there is a problem in that a satisfactory maintenance operation cannot be performed if each member deteriorates.
[0007]
Therefore, in order to perform a good maintenance operation, it is desired that the maintenance unit is not irradiated with ultraviolet rays.
[0008]
In this regard, inkjet recording devices that turn off the light source before the transition to the maintenance operation are known, but if the light source is turned off and turned on again, there is a time until the ultraviolet light reaches a certain amount of light, and the maintenance operation It is difficult to perform the recording operation immediately after completion. In addition, frequent repetition of turning on and off causes the life of the light source to be shortened.
[0009]
Also known is an inkjet recording apparatus that performs a maintenance operation in which an ultraviolet light shielding shutter is mounted on the carriage and the light source is covered with the shutter so that the maintenance unit is not irradiated with ultraviolet light. As a result, the mechanism of the carriage is complicated and expensive, and the weight of the carriage increases, resulting in a problem that the durability of the carriage, the carriage drive mechanism, etc. is lowered and the image quality is lowered.
[0010]
SUMMARY An advantage of some aspects of the invention is that it provides an ink jet recording apparatus that can prevent a maintenance unit from being irradiated with ultraviolet rays.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, an ink jet recording apparatus according to claim 1 is equipped with a recording head having an ejection port for ejecting ink that is cured by irradiating ultraviolet rays onto a recording medium, and the recording head. A carriage that is supported by a guide rail and reciprocates along the guide rail, a light source that is held by the carriage and that irradiates ultraviolet rays onto the ink ejected onto the recording medium, and a maintenance operation of the recording head In an inkjet recording apparatus comprising a maintenance unit for performing
Comprising an irradiation surface light-shielding plate for preventing ultraviolet rays from the light source is incident on the maintenance unit, and the side light shielding plate, and
The side light shielding plates are provided as a pair on the side surface side of the maintenance unit, and are provided perpendicular to the direction along the guide rail,
The irradiation surface light shielding plate is provided so as to be movable along each guide groove provided in the pair of side surface light shielding plates by an irradiation surface light shielding plate driving mechanism.
At the time of maintenance, the carriage moves to a state facing the maintenance unit along the guide rail, and moves in a direction approaching the maintenance unit by a vertical drive mechanism, so that the side light shielding plate is moved from the light source to the maintenance unit. shields the ultraviolet rays irradiated to the unit, in that state, before Symbol maintenance by moving along the irradiated surface light-shielding plate that was in a state interposed each guide groove between the maintenance unit and the carriage Retreat from between the unit and the carriage to perform the maintenance operation of the recording head ,
After maintenance operation is completed, the irradiation surface shading plate is moved along the respective guide grooves is disposed between the carriage and the maintenance unit, that moves the carriage in a direction away from the maintenance unit It is a feature.
[0012]
According to the first aspect of the present invention, it is possible to prevent the maintenance unit from being irradiated with ultraviolet rays by providing the moving light shielding member and the fixed light shielding member. Thereby, each member of the maintenance unit due to ultraviolet irradiation can be prevented from deteriorating and ink attached to the maintenance unit can be prevented from curing.
[0013]
According to a second aspect of the present invention, in the ink jet recording apparatus according to the first aspect, the carriage captures ultraviolet rays from the light source between the recording head and the light source, and the ultraviolet rays are emitted from the recording head. An optical trap that prevents light incident on the side is provided, and during maintenance, the carriage is moved in a direction approaching the maintenance unit, and the side light shielding plate is inserted in the optical trap. The method is characterized in that ultraviolet rays from the light source are shielded .
[0014]
According to the second aspect of the present invention, in the ink jet recording apparatus according to the first aspect, in a state where the tip of the side light shielding plate is inserted into the optical trap , the maintenance unit is irradiated with ultraviolet rays only by the side light shielding plate. Irradiation can be prevented. Thereby, each member of the maintenance unit due to ultraviolet irradiation can be prevented from deteriorating and ink attached to the maintenance unit can be prevented from curing.
[0015]
According to a third aspect of the present invention, in the inkjet recording apparatus according to the first or second aspect, the maintenance unit includes a suction member that sucks ink from the discharge port, and ink near the discharge port and the discharge port. The maintenance unit is characterized in that the ink suction and the wiping are performed at different distances with respect to the vertical direction of the discharge port by the vertical drive mechanism .
[0016]
According to the third aspect of the present invention, ink can be sucked and wiped in a state where ultraviolet rays are not irradiated to the suction member and the wipe member during maintenance.
[0017]
According to a fourth aspect of the present invention, in the ink jet recording apparatus according to any one of the first to third aspects, the light source is any one of a high pressure mercury lamp, a metal halide lamp, a hot cathode tube, and a cold cathode tube. It is characterized by being one.
[0018]
According to the invention described in claim 4, a high pressure mercury lamp, a metal halide lamp, a hot cathode tube or a cold cathode tube can be used as the light source of the present invention.
[0019]
According to a fifth aspect of the present invention, in the ink jet recording apparatus according to any one of the first to fourth aspects, the ink is a cationic curable ink.
[0020]
According to the fifth aspect of the present invention, since the cationic polymerization ink having higher sensitivity to ultraviolet rays than the radical polymerization ink is used, the ink is sufficiently cured even if the ultraviolet ray amount is weaker than that of the radical polymerization ink. Therefore, a light source with a small irradiation dose can be used, and the light source can be made smaller than before.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0022]
FIG. 1 is an overall perspective view showing an embodiment of the present invention. The ink jet recording apparatus 1 of the present embodiment is a serial type ink jet recording apparatus using ultraviolet curable ink.
[0023]
The ink jet recording apparatus 1 is provided with a rod-shaped guide rail 2, and a carriage 3 is supported on the guide rail 2. The carriage 3 is moved along the guide rail 2 by a carriage driving mechanism 4. It can be moved back and forth. The moving direction of the carriage is a main scanning direction X, and the ink jet recording apparatus 1 is provided with a recording medium transport mechanism 5 for feeding a recording medium in a sub-scanning direction Y orthogonal to the main scanning direction X.
[0024]
The carriage 3 is mounted with recording heads 6, 6... Provided with ejection openings for ejecting one of the colors of yellow (Y), magenta (M), cyan (C), and black (Bk). The recording heads 6, 6,... Are mounted in two sets at positions shifted in the sub-scanning direction Y as a set of four along the main scanning direction X of the carriage.
[0025]
On both sides in the main scanning direction X of the recording heads 6, 6... Provided as a group, there are provided ultraviolet irradiation devices 7 that irradiate ultraviolet rays onto ink ejected to the recording medium. This ultraviolet irradiation device 7 is formed in a box shape that opens toward the recording medium side, and the surface in the box shape of the ultraviolet irradiation device 7 that is formed substantially parallel to the recording surface of the recording medium, Light sources 8 and 8 for irradiating ultraviolet rays for curing and fixing the ultraviolet curable ink landed on the recording medium are provided.
[0026]
As the light source 8, at least one of a high pressure mercury lamp, a metal halide lamp, a hot cathode tube, a cold cathode tube, and an LED is applied.
[0027]
In order to prevent the ultraviolet rays from the light sources 8 and 8 from being reflected on the recording medium and entering the recording heads 6, 6..., Optical traps 9 and 9 for capturing the ultraviolet rays are provided.
[0028]
The optical traps 9, 9 are formed in a U-shaped cross-section that opens toward the recording medium side, and the recording heads 6 disposed at both ends in the main scanning direction X and the light sources 8, 8 It is provided in between.
[0029]
A central portion of the movable range of the carriage 3 along the main scanning direction X is a recording area A that performs recording on a recording medium. In the recording area A, a platen P that supports the recording medium from a non-recording surface is provided. Is provided.
[0030]
The outer end of the recording area A that is the movable range of the carriage 3 is a maintenance area B that performs the maintenance operation of the ejection ports of the recording heads 6, 6,..., And the maintenance operation is performed in the maintenance area B. A maintenance unit 10 is provided for this purpose.
[0031]
The maintenance unit 10 is provided with a cap member 11 that sucks and removes ink clogged in the discharge port and bubbles generated in the discharge port together with the ink. The cap member includes a suction cap as a cap member 11 that covers the discharge ports of the recording heads 6, 6,... When the carriage 3 moves to the maintenance area B. .. Are provided in a number corresponding to the recording heads 6, 6. In the suction caps 12, 12, when an unillustrated absorber covers the discharge port with the suction caps 12, 12,..., The upper end surfaces of the suction caps 12, 12,. Is provided. The absorber is made of a porous resin that has been subjected to a hydrophilic treatment, such as Belita (trade name, manufactured by Kanebo Co., Ltd.).
[0032]
On the bottom surface of the suction caps 12, 12,..., An ink communication pipe 13 that communicates with the inside of the suction caps 12, 12,. A suction pump 14 that is a suction device is provided in the middle of the communication pipe 13, and an ink tank 15 that receives the sucked ink is provided at the lower end of the ink communication pipe 13.
[0033]
Further, in the maintenance unit 10, a wipe member 16 for wiping off the ink adhering to the discharge port and the vicinity of the discharge port is provided at one end side in the sub-scanning direction Y from the suction caps 12, 12,. The number corresponding to the recording heads 4 is provided. Ink wiping by the wipe member is performed by sliding the wipe member 16 and the ejection port of the recording head in sliding contact so that the maintenance unit 10 can be reciprocated in the sub-scanning direction Y by a maintenance unit drive mechanism (not shown). It has become.
[0034]
In order to prevent the maintenance unit 10 from being irradiated with ultraviolet rays, a light shielding unit 17 is provided in the maintenance region B. The light shielding unit 17 moves along a direction perpendicular to the guide rail 2 and a pair of side light shielding plates 18 and 18 that are fixed light shielding members on the side surface side of the maintenance unit 10 so that the maintenance unit 10 is not irradiated with ultraviolet rays. An irradiation surface light shielding plate 19 which is a movable light shielding member which is possible and is perpendicular to the side light shielding plates 18, 18 is provided. The side light shielding plates 18 and 18 are provided in parallel to the longitudinal direction of the optical traps 9 and 9 and perpendicular to the guide rail 2 so that they can be inserted into the optical traps 9 and 9 during the maintenance operation.
[0035]
Since the irradiation surface light shielding plate 19 is moved to the side light shielding plates 18 and 18 by an irradiation surface light shielding plate driving mechanism (not shown), the guide grooves 20 and 20 along the moving direction are maintenance units for the side light shielding plates 18 and 18. 10 side.
[0036]
In the present embodiment, as shown in FIG. 10, the inkjet recording apparatus 1 is provided with a controller 21 that controls the carriage drive mechanism 4, the recording medium transport mechanism 5, the recording heads 6, 6. It has been.
[0037]
The control unit 21 reciprocates the carriage 3 in the main scanning direction X, repeats conveyance and stop of the recording medium in accordance with the operation of the carriage 3, and conveys the recording medium in the sub-scanning direction Y. 4 and the operation of the recording medium transport mechanism 5 are controlled.
[0038]
The control unit 21 controls the maintenance operation by the maintenance unit 10 during the maintenance operation.
[0039]
The control unit 21 is connected with an input unit 22 for inputting image recording conditions and the like, and the recording heads 6, 6... The control unit 21 is based on a predetermined signal input from the input unit 22. .., 6... A predetermined voltage is applied to the piezoelectric elements (not shown) to control the recording heads 6, 6... So as to form a predetermined image on the recording medium.
[0040]
As the ink ejected from the recording heads 6, 6, etc. used in the present embodiment, in particular, “photo-curing technology—resin / initiator selection and blending conditions and curing degree measurement / evaluation— (Technical Association Information) "Photocuring system (Chapter 4)", "Curing system using photoacid / base generator (Section 1)", "Photoinduced alternating copolymerization (Section 2)", etc. Ink may be applied and may be cured by ordinary radical polymerization.
[0041]
Specifically, the ink used in the present embodiment is a photocurable ink having a property of being cured by irradiation with ultraviolet rays as light, and includes a polymerizable compound (including a known polymerizable compound) as a main component. ), A photoinitiator, and a coloring material. However, as the ink used in the present embodiment, the photoinitiator may be excluded when an ink that conforms to the above “light-induced alternating copolymerization (section 2)” is used. The above-mentioned photocurable ink is roughly classified into a radical polymerization type ink containing a radical polymerizable compound and a cationic polymerization type ink containing a cationic polymerizable compound as the polymerizable compound. As the ink used in the present embodiment, a hybrid ink in which a radical polymerization ink and a cation polymerization ink are combined may be used as the ink used in the present embodiment. However, since cationic polymerization inks that have little or no inhibitory action on polymerization reaction due to oxygen are superior in functionality and versatility, in this embodiment, cationic polymerization inks are used in particular. The cationic polymerization ink used in the present embodiment is specifically a mixture containing at least a cationic polymerizable compound such as an oxetane compound, an epoxy compound, or a vinyl ether compound, a photocation initiator, and a coloring material. Of course, it has the property of being cured by irradiation with ultraviolet rays.
[0042]
Here, as the recording medium used in the present embodiment, a transparent or opaque non-absorbent resin film used for so-called soft packaging can be applied. Specific resin types for resin films include polyethylene terephthalate, polyester, polyolefin, polyamide, polyesteramide, polyether, polyimide, polyamideimide, polystyrene, polycarbonate, poly-ρ-phenylene sulfide, polyether ester, polyvinyl chloride. , Poly (meth) acrylic acid ester, polyethylene, polypropylene, nylon and the like are applicable, and further, copolymers of these resins, mixtures of these resins, and those obtained by crosslinking these resins are also applicable. Above all, as the type of resin of the resin film, one of stretched polyethylene terephthalate, polystyrene, polypropylene, and nylon is selected because of the transparency, dimensional stability, rigidity, environmental load, cost, etc. of the resin film. It is preferable to use a resin film having a thickness of 2 to 100 μm (preferably 6 to 50 μm). Moreover, you may perform surface treatments, such as a corona discharge process and an easily bonding process, on the surface of the support body of resin films. Furthermore, as the recording medium used in the present embodiment, various known papers whose surfaces are coated with a resin, films containing pigments, foamed films, and other known opaque recording media can be applied.
[0043]
Next, the maintenance operation in the present embodiment will be described with reference to FIGS.
[0044]
As shown in FIGS. 2 and 3, the carriage 3 located in the recording area A moves along the guide rail 2 until it faces the recording heads 6, 6,... And the suction caps 12, 12,. (This state is hereinafter referred to as “maintenance initial state”).
[0045]
As shown in FIGS. 4 and 5, the distance between the recording heads 6, 6,... And the suction caps 12, 12,. The side light shielding plates 18 and 18 are inserted into the optical traps 9 and 9. In this state, the maintenance unit 10 is not directly irradiated with ultraviolet rays by the side light shielding plates 18 and 18 regardless of the existence of the irradiation surface light shielding plate 19 (hereinafter, this state is referred to as “maintenance standby state”).
[0046]
In the maintenance standby state, the irradiation surface light shielding plate 19 is moved between the maintenance unit 10 and the carriage 3 along the guide grooves 20 and 20 provided in the side light shielding plates 18 and 18 by an irradiation surface light shielding plate driving mechanism (not shown). Place outside the area between.
[0047]
After the irradiation surface light shielding plate 19 is arranged at the above position, as shown in FIGS. 6 and 7, the carriage 3 is moved, and the side light shielding plates 18 and 18 are further in the back of the optical traps 9 and 9 than in the maintenance standby state. The discharge port and the suction cap 12 are brought into close contact with each other (this state is hereinafter referred to as “ink suction state”).
[0048]
In this ink suction state, a maintenance operation is performed for sucking and removing ink clogged in the discharge port and bubbles generated in the discharge port together with the ink.
[0049]
Next, the irradiation surface light shielding plate 19 is maintained in a state of being retracted outside the area between the maintenance unit 10 and the carriage 3, and the carriage 3 is moved to the recording head 6 by the above-described vertical drive mechanism (not shown). 6. Separate the suction caps 12, 12,.
[0050]
Further, as shown in FIGS. 8 and 9, the maintenance unit 10 is moved in the sub-scanning direction Y by a maintenance unit drive mechanism (not shown) so that the wipe member 16 and the ejection surfaces of the recording heads 6, 6,. A maintenance operation is performed to perform a wiping and cleaning operation to remove dust and the like adhering to the discharge port and the vicinity of the discharge port (hereinafter, this state is referred to as a “wiping state”).
[0051]
After the maintenance operation is completed, the irradiation surface light shielding plate 19 is moved between the maintenance unit 10 and the carriage 3 along the guide grooves 20 and 20 provided in the side light shielding plates 18 and 18 by an irradiation surface light shielding plate driving mechanism (not shown). After that, the carriage 3 moves and the side light shielding plates 18 and 18 are detached from the optical traps 9 and 9.
[0052]
After the carriage 3 is placed at the initial maintenance position, the carriage 3 moves to the recording area A along the guide rail 2.
[0053]
According to the present embodiment, even if the carriage 3 on which the light sources 8 and 8 are mounted is arranged in the recording area A or the maintenance area B, the light shielding unit 17 is provided in the maintenance area B. Can be prevented, and deterioration of the member of the maintenance unit 10 and hardening of the ink attached to the maintenance unit 10 can be prevented.
[0054]
Further, by providing the light shielding unit 17 in the maintenance area B, the weight of the carriage 3 is not changed, so that the durability of the carriage 3 and the carriage drive mechanism 4 is lowered, and the image quality is not lowered.
[0055]
【The invention's effect】
According to the first aspect of the present invention, it is possible to prevent the maintenance unit from being irradiated with ultraviolet rays by providing the moving light-shielding member and the fixed light-shielding member, and each member of the maintenance unit is deteriorated due to ultraviolet irradiation. It is possible to prevent the ink attached to the maintenance unit from being cured. Therefore, there is an effect that a good maintenance operation can be performed.
[0056]
According to the second aspect of the present invention, when the front end portion of the fixed light-shielding member is received by the opening member, it is possible to prevent the maintenance unit from being irradiated with ultraviolet rays only by the fixed light-shielding member. It is possible to prevent each member of the unit from deteriorating and the ink attached to the maintenance unit from being cured. Therefore, there is an effect that a good maintenance operation can be performed.
[0057]
According to the third aspect of the present invention, there is an effect that the ink can be sucked and wiped in a state where the suction member and the wipe member are not irradiated with ultraviolet rays during maintenance.
[0058]
According to the invention described in claim 4, a high-pressure mercury lamp, a metal halide lamp, a hot cathode tube or a cold cathode tube can be used as the light source, and the invention according to any one of claims 1 to 3, There is a similar effect.
[0059]
According to the fifth aspect of the present invention, since the cationic polymerization ink having higher sensitivity to ultraviolet rays than the radical polymerization ink is used, the ink is sufficiently cured even if the ultraviolet ray amount is weaker than that of the radical polymerization ink. Thereby, the thing with a small irradiation dose can be used as a light source, and there exists an effect that a light source can be made smaller than before.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an ink jet recording apparatus according to an embodiment.
FIG. 2 is a schematic cross-sectional view showing an initial maintenance state of the ink jet recording apparatus according to the present embodiment.
FIG. 3 is a schematic cross-sectional view showing an initial maintenance state of the ink jet recording apparatus according to the present embodiment.
FIG. 4 is a schematic cross-sectional view showing a maintenance standby state of the ink jet recording apparatus according to the present embodiment.
FIG. 5 is a schematic side view illustrating a maintenance standby state of the ink jet recording apparatus according to the present embodiment.
FIG. 6 is a schematic cross-sectional view showing an ink suction state of the ink jet recording apparatus according to the present embodiment.
FIG. 7 is a schematic side view showing an ink suction state of the ink jet recording apparatus according to the present embodiment.
FIG. 8 is a schematic cross-sectional view showing a wiping state of the ink jet recording apparatus according to the present embodiment.
FIG. 9 is a schematic side view showing a wiping state of the ink jet recording apparatus according to the present embodiment.
FIG. 10 is a principal block diagram showing an outline of a control device according to the present embodiment;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Inkjet recording device 2 Guide rail 3 Carriage 4 Carriage drive mechanism 5 Recording medium conveyance mechanism 6 Recording head 7 Ultraviolet irradiation device 8 Light source 9 Optical trap 10 Maintenance unit 11 Cap member 12 Suction cap 13 Ink communication pipe 14 Suction pump 15 Ink tank 16 Wipe member 17 Light shielding unit 18 Side light shielding plate 19 Irradiation surface light shielding plate 20 Guide groove 21 Control unit 22 Input unit

Claims (5)

A recording head having an ejection port for ejecting ink that is cured by irradiating ultraviolet rays onto a recording medium; a carriage that mounts the recording head, is supported by a guide rail, and reciprocates along the guide rail; and the carriage In an ink jet recording apparatus comprising: a light source that irradiates ultraviolet rays to the ink that is held on and discharged onto the recording medium; and a maintenance unit that performs a maintenance operation of the recording head.
Comprising an irradiation surface light-shielding plate for preventing ultraviolet rays from the light source is incident on the maintenance unit, and the side light shielding plate, and
The side light shielding plates are provided as a pair on the side surface side of the maintenance unit, and are provided perpendicular to the direction along the guide rail,
The irradiation surface light shielding plate is provided so as to be movable along each guide groove provided in the pair of side surface light shielding plates by an irradiation surface light shielding plate driving mechanism.
At the time of maintenance, the carriage moves to a state facing the maintenance unit along the guide rail, and moves in a direction approaching the maintenance unit by a vertical drive mechanism, so that the side light shielding plate is moved from the light source to the maintenance unit. shields the ultraviolet rays irradiated to the unit, in that state, before Symbol maintenance by moving along the irradiated surface light-shielding plate that was in a state interposed each guide groove between the maintenance unit and the carriage Retreat from between the unit and the carriage to perform the maintenance operation of the recording head ,
After maintenance operation is completed, the irradiation surface shading plate is moved along the respective guide grooves is disposed between the carriage and the maintenance unit, that moves the carriage in a direction away from the maintenance unit An ink jet recording apparatus. The carriage is provided with an optical trap between the recording head and the light source for capturing the ultraviolet light from the light source and preventing the ultraviolet light from entering the recording head.
2. The maintenance device according to claim 1, wherein the carriage is moved in a direction approaching the maintenance unit, and the side light shielding plate shields ultraviolet rays from the light source in a state in which a front end portion thereof is inserted into the light trap. 2. An ink jet recording apparatus according to 1. The maintenance unit includes a suction member that sucks ink from the discharge port, and a wipe member that wipes off the ink near the discharge port and the discharge port.
The ink jet recording apparatus according to claim 1 , wherein the maintenance unit performs suction and wiping of the ink at different distances with respect to a vertical direction of the discharge port by the vertical driving mechanism .   4. The ink jet recording apparatus according to claim 1, wherein the light source is any one of a high pressure mercury lamp, a metal halide lamp, a hot cathode tube, and a cold cathode tube. 5.   The inkjet recording apparatus according to any one of claims 1 to 4, wherein the ink is a cationic curable ink.

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