JP2014133321A - Inkjet recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inkjet recording device which can reduce emissions of volatile organic compounds, and can be reduced in size as well.SOLUTION: An inkjet recording device 100 includes a recording head 1, and a condenser 5 that collects solvent vaporized from ink discharged to a medium 20 from the recording head 1 and condenses it into a liquid state.

Description

  The present invention relates to an ink jet recording apparatus that recovers a volatile organic compound (VOC).

  Japanese Patent Application Laid-Open No. 2004-151867 discloses a dryer for a printing press configured to exhaust exhaust gas obtained by drying ink of a printed matter in a dryer main body through a combustion-type deodorizing apparatus and then discharge the exhaust gas to the atmosphere.

Japanese Patent Laid-Open No. 11-291454 (released on October 26, 1999)

  2. Description of the Related Art Conventionally, an apparatus that burns a volatile organic compound that volatilizes by drying printing paper and dries the printing paper by generated heat is known. However, as described in Patent Document 1, it is necessary to separately provide an auxiliary device that generates a high temperature, such as a burner that burns exhaust gas, and the overall size of the printing apparatus including the deodorizing means is increased. There is. In addition, the printing apparatus becomes large and expensive.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a miniaturizable ink jet recording apparatus that can reduce discharge of volatile organic compounds.

  In order to solve the above-described problems, an ink jet recording apparatus according to the present invention includes a recording head and a condensing unit that recovers the solvent evaporated from the ink ejected from the recording head to the recording medium and condenses the liquid. And.

  Since ink contains water or a volatile organic compound in a solvent, when the ink is ejected from a head onto a recording medium, the water and the volatile organic compound are vaporized and diffused. Here, the condensing means condenses the solvent evaporated from the ink ejected to the recording medium. Therefore, before the volatile organic compound diffuses widely outside the ink jet recording apparatus, water or a solvent containing the volatile organic compound can be liquefied and efficiently recovered. Moreover, since there is no high temperature part compared with the catalytic type and combustion type decomposition apparatus, the apparatus can be miniaturized. Since the size can be reduced, the entire inkjet recording apparatus can be manufactured at low cost.

  Also, the solvent component contained in the air in the ink jet recording apparatus, whether the gas after recovering the vaporized solvent is discharged outside the ink jet recording apparatus or returned to the ink jet recording apparatus and sprayed onto the recording medium Therefore, the drying efficiency of the ink used for printing is improved.

  In the ink jet recording apparatus according to the present invention, a storage part that stores the vaporized solvent condensed into a liquid, and a cleaning that cleans at least a part of the ink jet recording apparatus using the liquid collected in the storage part And means.

  According to the said structure, the solvent which condensed and became liquid can be collect | recovered and stored in the storage part. The solvent recovered in the reservoir can be reused as a cleaning liquid by the cleaning means. For this reason, the usage-amount of the clean cleaning liquid used by the washing | cleaning means can be reduced.

  In the ink jet recording apparatus according to the present invention, the ink includes a volatile organic compound, and further includes a post-processing unit that performs post-processing by burning or adsorbing the volatile organic compound remaining after the condensation by the condensing unit. Is preferred.

  According to the above configuration, since the condensing means condenses most of the solvent evaporated from the ink, the evaporated solvent remaining in the exhaust can be efficiently post-processed by a small combustion device or adsorption device. .

  In the ink jet recording apparatus according to the present invention, a mounting table on which the recording medium is mounted, a heating unit for heating the recording medium on which the mounting table is mounted, and heat generated from the condensing unit are supplied to the heating unit. And a heat transfer means for transmitting.

  According to the above configuration, heat generated when the condensing unit condenses the vaporized solvent can be transmitted to the heating unit by the heat transfer unit. For this reason, the heat generated from the condensing means can be effectively utilized for drying the printed matter.

  In the ink jet recording apparatus according to the present invention, it is preferable that the condensing means recovers the vaporized solvent from a position above the mounting table in the vertical direction.

  Since the vaporized solvent rises upward in the vertical direction, according to the above configuration, the vaporized solvent can be efficiently recovered.

  In the ink jet recording apparatus according to the present invention, the condensing means cools and condenses the vaporized solvent, and has a cylindrical structure in which the length direction is arranged in parallel to the vertical direction. It is preferable that the inner wall is cooled by absorbing heat by flowing the evaporated solvent downward along the inner wall of the structure.

  The condensed and liquefied solvent undergoes heat exchange inside the cylindrical structure of the condensing means, and condenses on the inner wall surface of the cylindrical structure. By arranging the cylindrical structure parallel to the vertical direction and causing the vaporized solvent to flow downward in the vertical direction, the condensed and liquefied solvent is easily discharged from the cylindrical structure of the condensing means together with the airflow. Therefore, the inside of the cylindrical structure is not blocked by the liquefied solvent, and the condensation can be performed without degrading the condensing capacity even if the condensation is continued for a long time.

  In the ink jet recording apparatus according to the present invention, it is more preferable that the condensing unit condenses the vaporized solvent by cooling to a temperature range of 0 ° C to 35 ° C. Within this temperature range, the vaporized solvent can be condensed and liquefied efficiently.

  According to the present invention, it is possible to provide an ink jet recording apparatus that can reduce the emission of volatile organic compounds and can be miniaturized.

1 is a diagram schematically illustrating a configuration of an inkjet recording apparatus 100 according to Embodiment 1. FIG. It is a figure which shows typically the structure of the inkjet recording device 200 which concerns on Embodiment 2. FIG. It is a figure which shows typically the structure of the inkjet recording device 300 which concerns on Embodiment 3. FIG. It is a figure which shows typically the structure of the specific example of the condensation means with which the inkjet recording device which concerns on this invention is provided. It is a figure which shows the structure of another example of the condensation means with which the inkjet recording device which concerns on this invention is provided. It is a figure which shows the structure of another example of the condensation means with which the inkjet recording device which concerns on this invention is provided.

  Hereinafter, embodiments of the present invention will be described in detail.

<Embodiment 1>
As shown in FIG. 1, the ink jet recording apparatus 100 according to the first embodiment includes a recording head 1, a guide mechanism 2, a platen (mounting table) 3, a blower fan 4, a condenser (condensing means) 5, and a waste ink container 6. I have. FIG. 1 is a diagram schematically illustrating the configuration of an inkjet recording apparatus 100 according to the present embodiment. The ink jet recording apparatus 100 performs printing on a medium (recorded medium) 20.

[Recording head 1]
The recording head 1 ejects ink to the medium 20. By reciprocating along the guide mechanism 2 in the direction of arrow X, ink is ejected onto the medium 20 while scanning the medium 20.

  When ink is ejected from the recording head 1 to the medium 20, at least a part of the solvent contained in the ink is vaporized. Since the solvent contains a volatile organic compound, the volatile organic compound is also volatilized. However, since the volatile organic compound is condensed and liquefied by the condenser 5 to be described later, it can be prevented from diffusing outside the ink jet recording apparatus 100.

(ink)
The ink used in the ink jet recording apparatus according to the present invention is not limited as long as it contains a solvent, and examples thereof include water-based ink, solvent ink, thermosetting ink, and ultraviolet curable ink. These inks are ejected from the recording head 1 to the medium 20, and a solvent containing water, a volatile organic compound, or the like is vaporized. Further, when the platen 3 is warmed by the platen heater 10 as in Embodiment 3 described later, this vaporization is promoted.

(Volatile organic compounds)
Volatile organic compounds (VOCs) are organic chemicals that readily volatilize in the atmosphere at normal temperature and pressure, and are organic solvents used in inks such as water-based inks, solvent inks, thermosetting inks, and ultraviolet curable inks. It is. Examples of volatile organic compounds include hydrocarbon ethers such as glycol ether solvents, lactone solvents, hexane, heptane, octane, isooctane, cyclohexane, benzene, toluene, o-xylene, m-xylene, p-xylene, and ethylbenzene. Solvents, dichloromethane, chlorofluorocarbons, propylene glycol monomethyl ether, propyl acetate, propylene glycol monomethyl ether acetate, ethylene glycol, tetralin, N-methyl-2-pyrrolidone, γ-butyrolactone, ethylene glycol ethyl methyl ether and ethylene glycol monomethyl ether Organic chemical substances such as

[Guide mechanism 2]
The guide mechanism 2 is a guide for defining the moving direction of the recording head 1. The recording head 1 is attached to the guide mechanism 2 and reciprocates in the direction of the arrow X that is the length direction of the guide mechanism 2.

[Platen 3]
The platen 3 is a table on which the medium 20 is placed. The platen 3 may be provided with a platen heater as in Embodiment 3 described later. If the platen heater is provided, the drying of the ink is promoted, and the ink can be dried in a shorter time.

[Blower fan 4]
The blower fan 4 is for sending the vaporized solvent to the condenser 5. When the blower fan 4 is driven, the vaporized solvent enters the pipe in the direction of arrow A, and is collected by being delivered to the condenser 5 through the blower fan 4.

  The specific structure of the ventilation fan 4 is not specifically limited, For example, what is necessary is just to comprise with a propeller type fan.

[Condenser 5]
The condenser 5 is for condensing the vaporized solvent sent from the blower fan 4 and collected. By condensing, the solvent containing the volatile organic compound is liquefied and recovered. Therefore, before the volatile organic compound diffuses widely outside the inkjet recording apparatus 100, the solvent containing the volatile organic compound can be liquefied and efficiently recovered. Further, since the exhaust gas is not combusted as compared with the combustion type decomposition apparatus, the apparatus does not generate high temperature, and the apparatus can be downsized.

  The condenser 5 condenses by cooling the evaporated solvent. The temperature for cooling may be a temperature at which the vaporized solvent liquefies, and for example, a temperature range of 0 ° C to 35 ° C is more preferable. Within this temperature range, the vaporized solvent can be condensed and liquefied efficiently.

  The solvent is condensed by the condenser 5, and the remaining gas is discharged from the pipe in the direction of arrow B and discharged from the inkjet recording apparatus 100. About the remaining gas, the volatile organic compound is reduced.

  Also, the solvent component contained in the air in the ink jet recording apparatus, whether the gas after recovering the vaporized solvent is discharged outside the ink jet recording apparatus or returned to the ink jet recording apparatus and sprayed onto the recording medium Therefore, the drying efficiency of the ink used for printing is improved.

  The condenser 5 collects the solvent evaporated from a position above the platen 3 in the vertical direction. Since the vaporized solvent rises upward in the vertical direction, the vaporized solvent can be efficiently recovered at this position.

  Here, the specific structure of the condenser 5 is demonstrated using FIG. FIG. 4 is a diagram schematically illustrating the structure of a specific example of the condenser 5 provided in the inkjet recording apparatus 100.

  As shown in FIG. 4, the condenser 5 includes plates 51 ′, 51 ″, 51 ″ ″ and pipes 52 ′, 52 ″, 53 ′, 53 ″.

  The plates 51 ', 51 ", 51"' are shown apart from each other for the sake of simplicity in FIG. The plates 51 ′, 51 ″, 51 ″ ″ are arranged so that the surface direction is parallel to the vertical direction.

  Each of the plates 51 ″ and 51 ′ ″ has a recess 54 ″ for guiding the fluid entering from the pipe 53 ″ to the pipe 53 ′ and a recess for guiding the fluid entering from the pipe 52 ′ to the pipe 52 ″. 54 'is formed. The recesses 54 ′ and 54 ″ are covered with another plate on the front surface to form a flow path. In other words, the concave portions 54 ′ and 54 ″ are covered to form a cylindrical structure, and the flow direction of the fluid in the cylindrical structure is arranged to be parallel to the vertical direction.

  When the solvent evaporated in the direction of arrow a is passed through the pipe 52 ′, the solvent passes through the recess 54 ′ in the direction of arrow a ′ and enters the pipe 52 ″, and is discharged from the pipe 52 ″ in the direction of arrow a ″. The On the other hand, when the refrigerant is passed through the pipe 53 ″ in the direction of arrow b, the refrigerant passes through the recess 54 ″ in the direction of arrow b ′ and enters the pipe 53 ′, and is discharged from the pipe 53 ′ in the direction of arrow b ′. The

  Since the solvent flowing in the direction of the arrow a 'and the refrigerant flowing in the direction of the arrow b' are thermally coupled via the plate 51 ", the solvent is cooled by the refrigerant and condensed and liquefied. Therefore, the liquefied solvent can be recovered from the pipe 52 ″.

  Here, for the sake of simplicity of explanation, a plate-type heat exchanger composed of three plates has been described as an example, but the number of plates can be appropriately increased according to the target cooling efficiency and the like. When increasing the number of plates, three or more spaces between the plates are formed by the two plates. However, the space in which the coolant flows and the space in which the solvent flows may be alternately arranged. A conventionally known plate heat exchanger can be used as the condenser having such a configuration.

  In the present embodiment, a configuration for condensing and recovering the vaporized solvent only by the condenser 5 will be described, but the configuration for preventing the vaporized solvent from leaking out of the inkjet recording apparatus is not limited to this. For example, in the case of using a solvent containing a volatile organic compound, it may further comprise a post-processing means for post-processing by burning or adsorbing the volatile organic compound remaining after the condensation by the condensing means. Since the volatile organic compound vaporized from the ink is condensed to some extent by the condensing means, it is only necessary to provide a small post-processing means having a small processing capacity.

  In order to completely recover the vaporized volatile organic compound only by condensation recovery, it is necessary to cool it down to −30 ° C. to −80 ° C., and in order to separate and recover moisture, Since the multistage cooling is performed before, the apparatus becomes large. Therefore, by performing the recovery process by cooling the condenser 5 at a temperature about 5 ° C. lower than the room temperature, the condenser 5 firstly recovers more than half of the volatile organic compound, and then the adsorption device or the combustion device is used. By using and processing the remaining volatile organic compounds, it is possible to reduce the size of the entire apparatus while maintaining a high recovery processing capacity.

(Modification 1 of the condenser 5)
Here, a condenser 5 ′, which is another form of the condenser 5, will be described with reference to FIG. FIG. 5 is a diagram showing the structure of the condenser 5 ′. The condenser 5 ′ has a narrowed portion that is cylindrical and has a length direction arranged in parallel to the vertical direction.

  When the blower fan 4 is driven, the vaporized solvent sent in the direction of the arrow c passes through the narrowed portion of the condenser 5 '. The condenser 5 ′ has a configuration for cooling the constricted portion, and the solvent evaporated by the inner wall absorbing heat is cooled and condensed. A plurality of constrictions may be provided.

  With such a structure, the condensed and liquefied solvent does not accumulate in the cylindrical portion of the condenser 5 ′, so that the condensation can be performed continuously for a long time.

  The condensed and liquefied solvent is collected in a container disposed at a position below the condenser 5 'in the vertical direction, discharged in the direction of arrow e, and sent to a waste ink container 6 described later. Further, the gas from which the volatile organic compound and the vaporized solvent are removed is discharged in the direction of arrow d.

(Modification 2 of the condenser 5)
Next, a condenser 5 '' which is another form of the condenser 5 will be described with reference to FIG. FIG. 6 shows the structure of the condenser 5 ″. explain. As shown in FIG. 6, the condenser 5 ″ has a plurality of disk structures arranged in parallel, and a tube through which the cooling solvent passes penetrates the plurality of disk structures in a U shape.

  As the cooling solvent enters the tube in the direction of arrow f and circulates in the direction of arrow g, the disk structure is cooled. When the vaporized solvent is sent from the blower fan 4 toward the disk structure, a spiral airflow occurs in the direction of arrow h, and the vaporized solvent is cooled by the disk structure, liquefied, and falls in the direction of arrow i. To do. And the fallen solvent can be collect | recovered.

[Waste ink container 6]
The waste ink container 6 is a container that collects ink adhering as dirt that is excluded when the recording head 1 is cleaned. In this embodiment, the vaporized solvent discharged from the condenser 5 is condensed. The liquefied product is also collected in the waste ink container 6.

<Embodiment 2>
In the second embodiment, an embodiment in which at least a part of the ink jet recording apparatus 100 is cleaned using a condensed and recovered solvent is described with reference to FIG. FIG. 2 is a diagram schematically illustrating the configuration of the inkjet recording apparatus 200 according to the second embodiment. About the same structure as the structure demonstrated in Embodiment 1, the same code | symbol is attached | subjected also about FIG. 2, and description is abbreviate | omitted. Here, differences from the first embodiment will be mainly described.

  The ink jet recording apparatus 200 includes a storage unit 7 and a cleaning unit (cleaning unit) 8.

[Reservoir 7]
The storage unit 7 is for storing the vaporized solvent condensed by the condenser 5 and liquefied.

  The liquid stored in the storage unit 7 is used by the cleaning unit 8. That is, the liquid is sent from the storage unit 7 to the cleaning unit 8 by an amount used by the cleaning unit 8.

[Washing part 8]
The cleaning unit 8 is for cleaning at least a part of the ink jet recording apparatus 100 using the liquid stored in the storage unit 7.

  An example of a part of the ink jet recording apparatus 100 that is cleaned by the cleaning unit 8 is the recording head 1. When the cleaning unit 8 cleans the recording head 1, the structure is a structure that caps the nozzle surface of the recording head 1, for example. The nozzle is washed by filling the liquid in the cap and immersing the nozzle surface and sucking or blowing the liquid.

  In addition to the cap, there are various cleanings such as cleaning when wiping the nozzle surface with a wiper, cleaning by carrying it in the recording head 1 and flushing, cleaning the wiper and the cap itself, and cleaning the ink supply path. The recovered liquid can be used for proper washing. Thus, by using the recovered solvent as a cleaning liquid, it is possible to reduce the amount of clean cleaning liquid separately prepared for cleaning.

  Moreover, depending on the aspect of the condenser 5, the liquid condensed in the condenser 5 may be a mixed liquid of water and a volatile organic compound. When used for cleaning the recording head 1 or the like, it may be used as it is. However, if there is too much water, it can be separated by the difference in specific gravity between water and volatile organic compounds, or using a water separator. Also good. As the water separator, for example, a water separation solvent recovery system using an osmotic vaporization method may be used.

  The dirty liquid after being used for cleaning by the cleaning unit 8 is collected in the waste ink container 6. Therefore, the inkjet recording apparatus 200 is piped so that the waste liquid from the cleaning unit 8 is collected in the waste ink container 6.

<Embodiment 3>
In the third embodiment, a form in which the platen 3 is heated using heat generated in the condenser 5 will be described with reference to FIG. FIG. 3 is a diagram schematically illustrating the configuration of the inkjet recording apparatus 300 according to the second embodiment. About the same structure as the structure demonstrated in Embodiment 1, the same code | symbol is attached | subjected also about FIG. 3, and description is abbreviate | omitted. Here, differences from the first embodiment will be mainly described.

  The ink jet recording apparatus 300 includes a heat pump (heat transfer means) 9 and a platen heater (overheat means) 10.

[Heat pump 9]
The heat pump 9 transmits heat generated from the condenser 5 to the platen heater 10. In this embodiment, a heat pump is employed as the heat transfer means, but the specific mode of the heat transfer means is not limited to this, and any heat transfer means may be used as long as it can transfer heat from the condensation means to the heating means.

  By providing the heat pump 9 in this way, the heat generated when the condenser 5 condenses the vaporized solvent can be effectively utilized for drying the printed material, which is energy saving.

[Platen heater 10]
The platen heater 10 heats the medium 20 on which the platen 3 is placed. By heating the medium 20, the ink discharged on the medium 20 is dried. Specifically, the platen heater 10 is a heater disposed on the inside of the platen 3 or on the surface opposite to the mounting surface.

  By providing the platen heater 10, the drying efficiency of the ink on the medium 20 is extremely improved, but on the other hand, the vaporization of the solvent and the volatilization of the volatile organic compound proceed. However, according to the present invention, the vaporized solvent can be efficiently recovered. Furthermore, according to the present embodiment, heat generated during recovery can be used for drying ink, so that energy efficiency is also improved.

<Additional notes>
As described above, the inkjet recording apparatus 100 includes the recording head 1 and the condenser 5 that recovers the solvent evaporated from the ink ejected from the recording head 1 to the medium 20 and condenses it into a liquid state.

  Since the solvent evaporated from the ink contains a volatile organic compound, the volatile organic compound is volatilized when the ink is ejected from the head onto the recording medium. Here, the condenser 5 condenses the solvent evaporated from the ink discharged to the medium 20 together with the volatile organic compound. Therefore, before the volatile organic compound diffuses widely outside the inkjet recording apparatus 100, the solvent containing the volatile organic compound can be liquefied and efficiently recovered. Moreover, since there is no high temperature part compared with the catalytic type and combustion type decomposition apparatus, the apparatus can be miniaturized. Since the size can be reduced, the entire inkjet recording apparatus can be manufactured at low cost.

  Further, whether the gas after recovering the vaporized solvent is discharged out of the ink jet recording apparatus 100 or returned to the ink jet recording apparatus 100 and sprayed onto the medium 20, it is included in the air in the ink jet recording apparatus 100. Since the solvent component is reduced, the drying efficiency of the ink used for printing is improved.

  In the ink jet recording apparatus 200, a storage unit 7 that stores the vaporized solvent that has been condensed into a liquid, a cleaning unit 8 that cleans at least a part of the ink jet recording apparatus 200 using the liquid collected in the storage unit 7, Is provided.

  According to the above configuration, the solvent that has been condensed into a liquid can be recovered and stored in the storage unit 7. The solvent recovered in the storage unit 7 can be reused as a cleaning liquid by the cleaning unit 8. For this reason, the usage-amount of the clean cleaning liquid used by the washing | cleaning part 8 can be reduced.

  In the inkjet recording apparatus 100, the ink preferably includes a post-processing unit that includes a volatile organic compound and performs post-processing by burning or adsorbing the volatile organic compound remaining after the condensation by the condenser 5.

  According to the above configuration, since the condenser 5 condenses most of the solvent vaporized from the ink, the vaporized solvent remaining in the exhaust can be efficiently post-processed by a small combustion device or adsorption device. it can.

  In the inkjet recording apparatus 300, the platen 3 on which the medium 20 is placed, the platen heater 10 that heats the medium 20 on which the platen 3 is placed, the heat pump 9 that transmits heat generated from the condenser 5 to the platen heater 10, Is provided.

  According to the above configuration, the heat generated when the condenser 5 condenses the vaporized solvent can be transmitted to the platen heater 10 by the heat pump 9. For this reason, the heat generated from the condenser 5 can be effectively utilized to dry the printed matter.

  In the inkjet recording apparatus 100, the condenser 5 collects the solvent evaporated from a position in the vertical direction of the platen 3.

  Since the vaporized solvent rises upward in the vertical direction, according to the above configuration, the vaporized solvent can be efficiently recovered.

  In the inkjet recording apparatus 100, the condenser 5 cools and condenses the evaporated solvent, and has a cylindrical structure in which the length direction is arranged in parallel to the vertical direction. The solvent vaporized along the inner wall is allowed to flow downward to cool the inner wall by absorbing heat.

  The condensed and liquefied solvent undergoes heat exchange inside the cylindrical structure of the condenser 5 and condenses on the inner wall surface of the cylindrical structure. By arranging the cylindrical structure parallel to the vertical direction and causing the vaporized solvent to flow downward in the vertical direction, the condensed and liquefied solvent is easily discharged from the cylindrical structure of the condensing means together with the airflow. Therefore, the inside of the cylindrical structure is not blocked by the liquefied solvent, and the condensation can be performed without degrading the condensing capacity even if the condensation is continued for a long time.

  In the ink jet recording apparatus 100, it is more preferable that the condensing unit condenses the vaporized solvent by cooling to a temperature range of 0 ° C to 35 ° C. Within this temperature range, the vaporized solvent can be condensed and liquefied efficiently.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  The present invention can be used for inkjet printing.

1 Recording head 3 Platen (mounting table)
5, 5 ', 5 "condenser (condensing means)
7 Storage part 8 Cleaning part (cleaning means)
9 Heat pump (heat transfer means)
10 Platen heater (heating means)
20 media (recording medium)
100, 200, 300 Inkjet recording apparatus

Claims (7)

A recording head;
A condensing means for collecting the solvent evaporated from the ink ejected from the recording head to the recording medium and condensing it into a liquid;
An ink jet recording apparatus comprising: A reservoir for storing the vaporized solvent condensed into a liquid;
A cleaning means for cleaning at least a part of the ink jet recording apparatus using the liquid collected in the reservoir;
The inkjet recording apparatus according to claim 1, comprising: The ink contains a volatile organic compound,
The inkjet recording apparatus according to claim 1, further comprising a post-processing unit that performs post-processing by burning or adsorbing the volatile organic compound remaining after the condensation by the condensing unit. A mounting table for mounting the recording medium;
Heating means for heating the recording medium on which the mounting table is placed;
A heat transfer means for transferring heat generated from the condensing means to the heating means;
The ink jet recording apparatus according to claim 1, wherein the ink jet recording apparatus is provided.   5. The ink jet recording apparatus according to claim 4, wherein the condensing unit collects the vaporized solvent from a position in a vertical direction of the mounting table.   The condensing means cools and condenses the vaporized solvent, and has a cylindrical structure in which the length direction is arranged in parallel to the vertical direction, and is along the inner wall of the cylindrical structure. The inkjet recording apparatus according to claim 1, wherein the inner wall is cooled by absorbing heat by flowing the evaporated solvent downward.   The inkjet recording apparatus according to claim 6, wherein the condensing unit condenses the vaporized solvent by cooling to a temperature range of 0 ° C. to 35 ° C.

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