JP7216321B2 - Gas blowing device, drying device, device for ejecting liquid, device for applying treatment liquid - Google Patents

Description

The present invention relates to a gas blowing device, a drying device, a liquid discharging device, and a treatment liquid applying device.

2. Description of the Related Art As a printing apparatus that applies a liquid to a heated object such as a roll paper, a continuous form paper, or a belt-shaped continuous body (web) to perform printing, there is a printer that includes a drying device to accelerate drying of the applied liquid.

For example, along the moving direction of the object to be heated, a long heater that is long in a direction perpendicular to the direction of movement of the object to be heated and a blower having a long nozzle extending in a direction perpendicular to the direction of movement of the object to be heated are alternately arranged. There is a device in which air heated by a heater is blown onto an object to be heated from a nozzle of an air blower (Patent Document 1).

JP 2016-168805 A

By the way, in a gas blowing device having slit-shaped or row-shaped blowing ports (nozzles) leading to the internal space of the chamber, the distance from the supply port for sending air into the chamber to the actual blowing position depends on the nozzle. There is a problem that the blowing temperature of the whole is uneven.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to reduce variations in blowing temperature.

In order to solve the above problems, the gas blowing device according to claim 1 of the present invention includes:
a chamber into which gas is sent from a supply port;
a slit-shaped or row-shaped outlet that communicates with the internal space of the chamber and that blows gas;
a partition member that partitions the internal space of the chamber into a first space that includes the supply port and a second space that does not include the supply port;
a rectifying member having a plurality of openings arranged between the second space and the outlet,
The partition member is provided with one or more openings that communicate with the first space and the second space,
The supply port is provided at one longitudinal end of the chamber,
The aperture ratio at the central portion in the longitudinal direction of the partition member was set to be larger than the aperture ratio at both ends in the longitudinal direction.

According to the present invention, the variation in blowing temperature can be reduced.

1 is a schematic explanatory diagram of an example of a printing device as a device for ejecting liquid according to the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is plane explanatory drawing of the drying apparatus which concerns on 1st Embodiment of this invention. It is a side explanatory view of the drying apparatus. It is a perspective explanatory view of the gas blowing device in the same drying apparatus. It is also a front explanatory view. It is similarly a plane explanatory view of a partition member, a rectification|straightening member, and a nozzle. It is plane explanatory drawing of the drying apparatus which concerns on 2nd Embodiment of this invention. It is plane explanatory drawing of the drying apparatus which concerns on 3rd Embodiment of this invention. It is a side explanatory view of the drying apparatus. It is a perspective explanatory view of the gas blowing device in the same drying apparatus. It is a perspective explanatory view of the gas blowing device concerning a 4th embodiment of the present invention. It is a perspective explanatory view of the gas blowing device which concerns on 5th Embodiment of this invention. FIG. 11 is a perspective explanatory view of a gas blowing device according to a sixth embodiment of the present invention; It is a perspective explanatory view of the gas blowing device concerning 7th Embodiment of this invention. It is a perspective explanatory view of the gas blowing device which concerns on 8th Embodiment of this invention. It is a perspective explanatory view of a gas blowing device according to a ninth embodiment of the present invention. It is a perspective explanatory view of the gas blowing device concerning a 10th embodiment of the present invention. FIG. 20 is an explanatory side view of a treatment liquid deposition device according to an eleventh embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. A first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic explanatory diagram of an example of a printing device as a device for ejecting liquid according to the embodiment.

The printing apparatus 100 is an inkjet recording apparatus, and applies liquid by ejecting ink of a desired color onto continuous paper 110, which is a member to be conveyed (member to be conveyed, object to be heated, object to be dried). It has a liquid applying section 101 including a liquid ejection head 111 (111A to 111D) as means.

For example, the liquid applying unit 101 is provided with full-line liquid ejection heads 111 for four colors from the upstream side in the conveying direction of the continuous paper 110 . , yellow Y liquid. Note that the types and number of colors are not limited to this.

The continuous paper 110 is fed out from the unwinding roller 102, sent out by the transport roller 112 of the transport unit 103 onto the transport guide member 113 arranged facing the liquid application unit 101, and guided by the transport guide member 113. , is transported (moved) facing the liquid applying unit 101 .

The continuous paper 110 to which liquid has been applied by the liquid applying section 101 passes through a drying apparatus (drying section) 104 according to the present invention, is sent by a discharge roller 114 , and is taken up by a take-up roller 105 .

Next, a drying apparatus according to the first embodiment will be described with reference to FIGS. 2 and 3. FIG. FIG. 2 is an explanatory plan view of the drying apparatus, and FIG. 3 is an explanatory side view of the drying apparatus.

According to the present invention, the drying device 104 is a plurality of (here, six in total) air blowing means along the moving direction of the continuous paper 110 to be dried (direction of arrow Y: hereinafter referred to as "conveying direction Y"). An air knife 120, which is a gas blowing device according to the above, is arranged.

Radiation heating means 121 for heating the air inside the air knives 120 is arranged between the adjacent air knives 120 , 120 outside each air knife 120 .

The air knife 120 has an elongated chamber 131 and a nozzle 132 which is an outlet communicating with an internal space 133 of the chamber 131 , details of which will be described later. The nozzle 132 has a length corresponding to the width in the direction intersecting the transport direction Y. As shown in FIG.

Further, the air knife 120 of this embodiment has a fan 134 as an airflow generating means for sending gas into the internal space 133 of the chamber 131 at one longitudinal end of the chamber 131 . As the fan 134 as the airflow generating means, for example, a counter-rotating fan or the like can be used to obtain a large air volume.

Here, the air knife 120 is blowing means in which a fan 134 is arranged as an airflow generating means on one end side in a direction intersecting the moving direction (conveying direction Y) of the continuous paper 110 . A fan 134 of the air knife 120 generates an airflow in the direction of arrow b in the internal space 133 of the chamber 131, and gas is jetted (blown out) from the nozzle 132 in the direction of arrow d.

The radiant heating means 121 are arranged between the air knives 120, 120 adjacent in the conveying direction Y. As shown in FIG. That is, the air knives 120 and the radiant heating means 121 are alternately arranged.

Thereby, the air inside two adjacent air knives 120, 120 can be heated by one radiant heating means 121. FIG. However, the radiant heating means 121 can also be arranged, for example, every two airs 120 .

As the radiation heating means 121, an infrared heater that emits infrared rays having a maximum wavelength in the absorption wavelength band of moisture contained in the liquid is preferable. Further, it is preferable to use a carbon heater using carbon as the material of the heating element.

These multiple air knives 120 and radiant heating means 121 are surrounded by an apparatus exterior 140 .

Next, the action of this drying device 104 will be described.

The continuous paper 110 to which the liquid is applied by the liquid applying unit 101 is conveyed in the conveying direction Y and passes through the drying device 104 .

By energizing the radiant heating means 121 in the drying device 104, radiant heat is directly applied from the radiant heating means 121 to the conveyed continuous paper 110, and the continuous paper 110 is heated by the radiant heat.

Also, the air inside the chamber 131 of the air knife 120 is heated by the radiant heat of the radiant heating means 121 . Then, by driving the fan 134 to send gas into the internal space 133 of the chamber 131, heated air (warm air) is blown out from the nozzle 132 in the direction of the arrow d, and the continuous paper 110 being conveyed is heated. be sprayed.

As a result, the liquid on the continuous paper 110 can be heated to increase the vapor pressure of the liquid, and the continuous paper 110 can be dried.

At this time, since the radiant heating means 121 and the air knives 120 are alternately arranged, the continuous paper 110 is excessively heated by the radiant heat from the radiant heating means 121 due to the impinging jets of the gas blown out from the air knives 120 . It is prevented from being heated.

Next, a gas blowing device according to the first embodiment will be described with reference to FIGS. 4 to 6. FIG. 4 is a perspective explanatory view of the same gas blowing device, FIG. 5 is a front explanatory view of the same, and FIG. 6 is a plan view of the partition member, the rectifying member and the nozzle.

The air knife 120 as a gas blowing device includes a chamber 131 having an internal space 133 into which gas from a fan 134 is sent through a supply port 133a, and a nozzle 132 which is a slit-shaped blowing port communicating with the internal space 133 of the chamber 131. and Note that the nozzle 132 can also be configured by arranging a plurality of injection ports in a row.

A plate-like partition member 153 is arranged in the chamber 131 to partition the internal space 133 into a first space 151 including the supply port 133a and a second space 152 not including the supply port 133a.

The partition member 153 is arranged so as to be higher from the supply port 133a side, which is one end side in the longitudinal direction, toward the other end side. Thereby, the supply port 133a can be enlarged while suppressing the height of the chamber 131 .

The partition member 153 is provided with a plurality of openings 154 that communicate with the first space 151 and the second space 152 . As shown in FIG. 6A, the aperture 154 of the partition member 153 has a larger aperture ratio at the central portion A in the longitudinal direction of the first partition member 153 than at both ends B and C in the longitudinal direction. It is set up so that Note that the aperture ratio is the ratio of the area of the openings per unit area, and the sizes (areas) of the openings 154 do not all need to be the same.

A plate-like rectifying member 155 is arranged between the second space 152 and the nozzle 132 in the chamber 131 .

The straightening member 155 is provided with a plurality of openings 156 that communicate with the second space 152 and the nozzles 132 . The openings 156 of the straightening member 155 are provided so that the opening ratio in the longitudinal direction of the straightening member 155 is substantially uniform, as shown in FIG. 6(b). The size (diameter) of each opening 156 need not be the same.

The operation of the air knife 120 constructed in this way will be described.

As shown in FIG. 6A, when the fan 134 blows air and the gas is sent from the supply port 133a into the first space 151 of the internal space 133 of the chamber 131, the gas sent into the first space 151 is separated by the partition member 153. through each opening 154 of the second space 152 .

Here, since the opening ratio of the central portion A of the partition member 153 is larger than the opening ratios of the both end portions B and C, the flow rate Pb1 flowing into the second space 152 through each opening 154 in the central portion of the partition member 153 is It is larger than the flow rates Pb2 and Pb3 of the gas flowing into the second space 152 through the openings 154 at both ends of the partition member 153 .

The gas that has flowed into the second space 152 is dispersed by passing through each opening 156 of the straightening member 155 having a substantially uniform longitudinal opening ratio shown in FIG. It flows into the slit-shaped nozzle 132 shown in 6(c) and is blown out.

This reduces variations in the flow rate of the gas blown out from the nozzle 132 in the longitudinal direction.

In addition, due to the partition member 153 having a relatively large opening ratio in the central portion A, the distance from the fan 134 to the nozzle 132 is greater on the fan 134 arrangement side (one end side) of the internal space 133 than when there is no partition member 153. The channel length becomes longer.

As a result, the heating time with the radiant heat from the radiant heating means 121 is made uniform, and the temperature unevenness of the blown gas (variation in blown temperature) occurring in the longitudinal direction of the chamber 131 can be reduced.

That is, when the partition member 153 is not provided, the chamber 131 of the air knife 120 has an elongated internal space 133, so the longer the distance from the fan 134 arranged at one end of the chamber 131, the greater the distance. The time for heating with the radiant heat from the radiant heating means 121 becomes longer, and the temperature becomes relatively high.

Therefore, the temperature of the gas blown out from the nozzle 132 is relatively low on the side of the fan 134 and relatively high on the side opposite to the fan 134 . unevenness) will occur.

Therefore, the partition member 153 reduces the difference in flow path length in the longitudinal direction from the fan 134 to the nozzle 132 and reduces the difference in heating time by radiant heat, thereby reducing temperature unevenness and drying unevenness. can be reduced.

As a result, the overall heating unevenness (drying unevenness) can be reduced in the width direction (the direction perpendicular to the transport direction Y) of the continuous paper 110 being transported. In this case, it is possible to prevent the continuous paper 110 from being overheated by blowing relatively high hot air on the same side in the width direction of the continuous paper 110 being conveyed, thereby preventing damage such as yellowing of the object to be dried. can do.

Furthermore, the rectifying member 155 can make the air velocity distribution in the longitudinal direction of the chamber 131 uniform, and the heating unevenness (drying unevenness) in the width direction of the continuous paper 110 can be further reduced.

Next, a second embodiment of the invention will be described with reference to FIG. FIG. 7 is an explanatory plan view of the drying device according to the same embodiment.

In this embodiment as well, the drying device 104 is a gas blowing device according to the present invention, which is a plurality of (here, six in total) air blowing means along the moving direction (conveying direction Y) of the continuous paper 110 to be dried. Air knives 120 (120A, 120B) are arranged as.

Radiation heating means 121 for heating the air inside the air knives 120 is arranged outside each air knife 120 and between the adjacent air knives 120A and 120B.

The air knife 120A is a first air blowing means in which a fan 134 is arranged as an airflow generating means on one end side in a direction intersecting the moving direction (conveying direction Y) of the continuous paper 110 . The fan 134 of the air knife 120</b>A generates an airflow in the direction of the arrow a inside the chamber 131 , and the gas is jetted (blown out) from the nozzle 132 .

On the other hand, the air knife 120B is a second air blowing means in which a fan 134 is arranged as an airflow generating means on the other end side of the direction intersecting the moving direction (conveying direction Y) of the continuous paper 110 . The fan 134 of the air knife 120</b>B generates an airflow in the direction of the arrow b inside the chamber 131 , and the gas is jetted (blown out) from the nozzle 132 .

The air knives 120A, which are the first blowing means, and the air knives 120B, which are the second blowing means, are alternately arranged along the moving direction of the continuous paper 110 (conveying direction Y). Although the air knives 120A and 120B are alternately arranged here, they may be alternately arranged.

As a result, the heating unevenness remaining in each air knife can be made uniform along the moving direction (conveyance direction Y) of the continuous paper 110, and the overall heating unevenness (drying unevenness) of the continuous paper 110 can be uniformed. can be further reduced.

Next, a third embodiment of the present invention will be described with reference to FIGS. 8 to 10. FIG. FIG. 8 is an explanatory plan view of the drying device according to the same embodiment, FIG. 9 is an explanatory side view of the drying device, and FIG. .

In this embodiment, the chamber 131 of the air knife 120 as the gas blowing device has a wide portion 131a having a relatively wide width in the transport direction at one end in a direction intersecting the transport direction Y, and the other end in the transport direction. It has an outer shape of a narrow width portion 131b having a relatively narrow width at .

A fan 134 as an airflow generating means is arranged on the wide portion 131a side of the chamber 131 . Therefore, the inner space 133 of the chamber 131 of the air knife 120 has a shape that tapers from one end toward the other end as it moves away from the fan 134 .

Inside the chamber 131, a partition member 153 that partitions the internal space 133 into a first space 151 and a second space 152, and a rectifying member 155 between the second space 152 and the nozzle 132 are arranged.

As in the first embodiment, the partition member 153 is configured to increase the opening ratio of the central portion of the chamber 131 relative to both ends in the longitudinal direction of the chamber 131, and the rectifying member 155 is substantially Apertures 156 are provided with a uniform aperture ratio.

Two air knives 120 adjacent to each other in the transport direction are arranged such that the wide width portions 131a and the narrow width portions 131b are alternately arranged. Here, four air knives 120A as the first air blowing means and air knives 120B as the second air blowing means are alternately arranged.

At this time, the chambers 131, 131 of the two air knives 120A, 120B adjacent in the transport direction Y overlap in the direction intersecting the transport direction Y.

With this configuration, it is possible to arrange a plurality of air knives 120 at a high density in the conveying direction Y while reducing drying unevenness on the continuous paper 110, and to reduce the size of the drying device. Alternatively, it is possible to improve the drying performance by high-density arrangement.

Next, a fourth embodiment of the invention will be described with reference to FIG. FIG. 11 is a perspective explanatory view of the gas blowout device according to the same embodiment.

In the present embodiment, as in the first embodiment, the partition member 153 is configured such that the central portion has a larger aperture ratio than the longitudinal ends of the chamber 131 . As for the aperture ratio at both ends in the longitudinal direction of the partition member 153, the aperture ratio at the end closer to the supply port 133a is larger than the aperture ratio at the end farther from the supply port 133a.

Further, in the present embodiment, the width of the chamber 131 in the longitudinal direction (the width in the conveying direction) gradually narrows from the supply port 133a side toward the central portion, and is opposite to the supply port 133a side from the central portion. It has an outer shape with substantially the same width up to the end of the side.

In this manner, the opening ratio at both ends in the longitudinal direction of the partition member 153 is such that the opening ratio at the end closer to the supply port 133a is larger than that at the end farther from the supply port 133a. Thus, the temperature can be made more uniform in the longitudinal direction than in the third embodiment.

Since the temperature on the side of the supply port 133a close to the fan 134 is low, if the opening ratio on the side of the supply port 133a is higher than that on the central portion, the temperature near the nozzle 132 will differ between the central portion and the side of the supply port 133a close to the fan 134. occurs.

Also, even in the longitudinal direction, the opening ratio of the end on the side of the supply port 133a near the fan 134 (region A in FIG. 6) and the end on the side opposite to the fan 134 (region C in FIG. 6) It was confirmed that the temperature of region C is higher than that of regions A and B when the aperture ratio is the same.

Such a phenomenon is caused by the fact that since the air is blown from one longitudinal end of the chamber 131, the air that reaches the vicinity of the rectifying member 155 via the opening 134 of the partition member 133 moves slightly to the rear side. It is considered to be a thing.

Therefore, it is better to make the aperture ratio of the area on the side of the fan 134 (area A in FIG. 6) larger than the aperture ratio of the area on the opposite side of the fan 134 (area C in FIG. 6).

Furthermore, in the central portion (region B in FIG. 6) of the chamber 31 in the longitudinal direction, the aperture ratio of the region closer to the supply port 133a side is made larger than the aperture ratio of the region farther from the supply port 133a. is preferred. In this case, as described above, since the opening ratio of the central portion is higher than that of both ends, the opening of the area near the supply port 133a side in the central portion in the longitudinal direction of the chamber 31 is increased. ratio becomes the area of maximum aperture ratio.

Table 1 shows the results of measuring the distance from the central portion (position: positive on the supply port 133a side, negative on the side opposite to the supply port 133a), blowing temperature, and blowing speed in this embodiment. .

As can be seen from Table 1, the temperature difference in the longitudinal direction can be kept within the range of approximately 6° C., and the speed can be kept within the range of the difference of 2 (m/s).

In this way, by making the opening ratio of the area on the side of the fan 134 (area A in FIG. 6) larger than the opening ratio of the area on the side opposite to the fan 134 (area C in FIG. 6), It is possible to suppress the temperature of the end portion from becoming higher than the end portion and the central portion on the fan 134 side. Thereby, uniformity of the blowing temperature from the nozzle 132 can be achieved.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 12 is a perspective explanatory view of the gas blowing device according to the same embodiment.

In the present embodiment, the partition member 153 has one opening 154 in the central portion in the longitudinal direction, and no openings are provided in both ends of the partition member 153 in the configuration of the first embodiment. In other words, the partition member 153 has an area where the opening 154 is provided and an area where the opening 154 is not provided. The opening 154 of this embodiment has a larger area than the opening 154 of each of the embodiments described above.

In this way, even if the partition member 153 is not provided with a plurality of openings and a single opening 154 is provided in the central portion, it is possible to obtain the same effects as those of the above-described embodiments.

Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 13 is a perspective explanatory view of the gas blowout device according to the same embodiment.

In this embodiment, in the configuration of the third embodiment, the partition member 153 has one opening 154 in the central portion in the longitudinal direction, and no openings are provided in both ends, as in the fifth embodiment. It is configured. The opening 154 of this embodiment has a larger area than the opening 154 of each of the embodiments described above.

Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 14 is a perspective explanatory view of the gas blowout device according to the same embodiment.

In this embodiment, the partition member 153 has a plurality of openings 154 in the central portion in the longitudinal direction and has no openings at both ends. Also in this case, the partition member 153 has a region provided with the opening 154 and a region not provided with the opening 154 .

In this manner, even with a configuration in which a plurality of openings 154 are provided in the central portion of the partition member 153 and no openings are provided at both ends, the same effects as those of the above-described embodiments can be obtained.

Next, an eighth embodiment of the invention will be described with reference to FIG. FIG. 15 is a perspective explanatory view of the gas blowout device according to the same embodiment.

In the present embodiment, a supply port 133a into which gas is sent from a fan 134 is provided in the central portion of the chamber 131 in the longitudinal direction, thereby forming a central supply configuration.

A partition member 153 is arranged in the chamber 131 to partition the internal space 133 into a first space 151 including the supply port 133a and a second space 152 not including the supply port 133a.

A plurality of openings 154 are provided in the partition member 153, and the opening ratio of both ends in the longitudinal direction is made larger than the opening ratio of the central portion in the longitudinal direction.

Further, a rectifying member 155 is arranged between the second space 152 and the nozzle 132 as in each of the above-described embodiments.

Because of this configuration, when the gas is sent into the first space 151 of the internal space 133 from the supply port 133a in the central portion in the longitudinal direction of the chamber 131, the gas flows into the second space 152 from both ends in the longitudinal direction of the partition member 153. The flow rate that flows into the second space 152 from the central portion of the partition member 153 in the longitudinal direction is greater.

As a result, variations in the blowing temperature of the gas blown from the nozzle 132 in the longitudinal direction are reduced.

Next, a ninth embodiment of the present invention will be described with reference to FIG. FIG. 16 is a perspective explanatory view of the gas blowout device according to the same embodiment.

In this embodiment, the partition member 153 is provided with one opening 154 at each end in the longitudinal direction, and no opening 154 is provided in the center in the longitudinal direction.

Even with this configuration, the gas sent from the supply port 133a in the central portion in the longitudinal direction does not go straight to the nozzle 132 as it is. The variation in the blowing flow rate in the longitudinal direction of the gas to be blown is reduced.

Next, a tenth embodiment of the present invention will be described with reference to FIG. FIG. 17 is a perspective explanatory view of the gas blowout device according to the same embodiment.

In the present embodiment, in place of the slit-shaped outlets (nozzles) in the configuration of the first embodiment, a plurality of nozzles 132, which are outlets, are arranged in a row along the longitudinal direction of the chamber 131. .

Even with this configuration, it is possible to obtain the same effects as those of the first embodiment. This embodiment can also be applied to the second to ninth embodiments.

In each of the above embodiments, an example in which the chamber 131 is provided with the fan 134 as an airflow generating means for sending airflow from the supply port 133a into the internal space 133 of the chamber 131 is described. , a duct or the like may be used to send the gas into the chamber 131 .

Next, an eleventh embodiment of the present invention will be described with reference to FIG. FIG. 18 is an explanatory side view of the treatment liquid deposition device according to the same embodiment.

This treatment liquid deposition apparatus 300 includes an application device 301 for applying a treatment liquid to an object 310 to be dried, and a drying device 302 according to the present invention for drying the object 310 to which the treatment liquid is applied. It has In addition, conveying rollers 305 and 306 for conveying the object 310 to be dried are provided.

Here, examples of the treatment liquid include a modifier that modifies the surface of the object to be dried 310 by applying it to the surface of the object to be dried 310 . Specifically, by uniformly applying the ink to the drying target 310 in advance, the moisture of the ink is quickly permeated into the drying target 310, the color component is thickened, and the drying is accelerated, resulting in bleeding (feathering). , bleeding, etc.) and strike-through, and a fixing agent (setting agent) that makes it possible to increase productivity (the number of image output sheets per unit time).

In terms of composition, the treatment liquid is, for example, a surfactant (either anionic, cationic, nonionic, or a mixture of two or more of these), and celluloses that promote the penetration of water. (Hydroxypropyl cellulose, etc.) and a base such as fine powder of talc added to a solution or the like can be used. Furthermore, it can also contain microparticles|fine-particles.

The coating device 301 includes a transport roller 511 that transports a drying target 310 , a coating roller 512 that faces the transport roller 511 and applies a treatment liquid 501 to the drying target 310 , and a processing liquid 501 that is supplied to the coating roller 512 . and a squeeze roller 513 for thinning the film (film of the treatment liquid 501). The direction of rotation of each roller is the direction of the arrow in the drawing. These rollers are arranged such that the application roller 512 is in contact with the conveying roller 511 and the squeeze roller 513 is in contact with the application roller 512 .

When the application device 301 applies the treatment liquid 501 to the object to be dried 310, the squeeze roller 513 rotates in the direction of the arrow in the figure, so that the treatment liquid 501 in the liquid tray 514 is scooped up by the surface of the squeeze roller 513, forming a liquid film. The layer 501a is transferred by its rotation and accumulated on the valley portion (contact portion: nip portion) between the squeeze roller 513 and the application roller 512 (treatment liquid 501b).

Here, the squeeze roller 513 and the application roller 512 are in contact with each other with a constant pressure, and the processing liquid 501b accumulated in the troughs is squeezed by the pressure when passing between the two rollers 513 and 512, and the processing liquid A liquid film layer 501 c of 501 is formed and transferred to the conveying roller 511 side by the rotation of the application roller 512 . The liquid film layer 501c transferred by the application roller 512 is applied to the object 310 to be dried.

The object to be dried 310 coated with the liquid film layer 501c of the treatment liquid 501 in this manner is transported to a drying device 302 having the same configuration as the drying device 104 of each of the above-described embodiments, and is subjected to a drying process. The object 310 to be dried after being dried by the drying device 302 is sent to the next step (for example, the liquid application unit 101 in the first embodiment).

As the treatment liquid 501, it is also possible to use a liquid that is cured by being irradiated with an active energy ray such as an ultraviolet ray. In this case, between the coating device 301 and the drying device 302, an exposure light source 303 (illustrated in phantom line) or the like is arranged as exposure means.

As a result, after the treatment liquid 501 is applied to the object to be dried 310 , the treatment liquid 501 is partially cured (semi-cured) by irradiation with active energy rays from the exposure light source 303 . Allow to dry. This configuration is particularly effective when using the processing liquid 501 containing a photopolymerization initiator and having a high water content.

As the photopolymerization initiator contained in the treatment liquid 501, a photoradical polymerization initiator is preferable, and aromatic ketones, phosphine oxide compounds, aromatic onium salt compounds, organic peroxides, thio compounds, hexaarylbiimidazole compounds, keto Examples include oxime ester compounds, borate compounds, azinium compounds, metallocene compounds, active ester compounds, compounds having a carbon-halogen bond, and alkylamine compounds.

The active energy rays irradiated by the exposure light source 303 include ultraviolet rays, visible rays, α rays, γ rays, X rays, electron beams, and the like. Examples of active energy ray exposure light sources include mercury lamps, metal halide lamps, light emitting diodes, and laser diodes.

Note that the application device 301 may apply using a liquid ejection head.

In each of the above-described embodiments, an example in which the air knife as the blowing means is arranged in a direction perpendicular to the conveying direction Y has been described, but the air knife as the blowing means intersects the conveying direction Y at an angle other than perpendicular. It can also be configured to be arranged in the direction of

Further, in each of the above embodiments, an example in which the object to be dried (the object to be heated, the member to be conveyed) is continuous paper is described, but it is not limited to this. It is not particularly limited as long as it is a member. For example, the object to be dried may be a continuous body such as continuous paper, roll paper, web, cut sheet material, wallpaper, electronic circuit board sheet such as prepreg, and the like.

In addition to recording images such as letters and figures with a liquid such as ink on the object to be dried, it is also possible to apply meaningless images such as patterns with a liquid such as ink for the purpose of decoration and decoration. you can

In the present application, the liquid to be applied is not particularly limited, but preferably has a viscosity of 30 mPa·s or less at normal temperature, under normal pressure, or by heating or cooling. More specifically, solvents such as water and organic solvents, colorants such as dyes and pigments, functional-imparting materials such as polymerizable compounds, resins, and surfactants, biocompatible materials such as DNA, amino acids, proteins, and calcium. , edible materials such as natural pigments, solutions, suspensions, emulsions, etc. These are, for example, inkjet inks, surface treatment liquids, components of electronic elements and light emitting elements, and formation of electronic circuit resist patterns It can be used for applications such as liquids for liquids and material liquids for three-dimensional modeling.

When the liquid ejection head is used as the liquid applying means, the energy generating source for ejecting the liquid may be a piezoelectric actuator (laminated piezoelectric element or thin film piezoelectric element), a thermal actuator using an electrothermal conversion element such as a heating resistor, or a vibration. It includes those using an electrostatic actuator consisting of a plate and a counter electrode.

Note that printing in the present application has the same meaning as image formation, recording, printing, printing, and the like.

101 liquid application unit 104 drying device (drying unit)
110 Continuous paper (for drying)
120, 120A, 120B Air knife (blowing means, gas blowing device)
121 radiation heating means (heating means)
131 chamber 132 nozzle (outlet)
133 Internal space 134 Fan (airflow generating means)
151 first space 152 second space 153 partition member 154 opening 155 rectifying member 156 opening 300 treatment liquid applying device 301 coating device 302 drying device

Claims (11)

a chamber into which gas is sent from a supply port;
a slit-shaped or row-shaped outlet that communicates with the internal space of the chamber and that blows gas;
a partition member that partitions the internal space of the chamber into a first space that includes the supply port and a second space that does not include the supply port;
a rectifying member having a plurality of openings arranged between the second space and the outlet,
The partition member is provided with one or more openings that communicate with the first space and the second space,
The supply port is provided at one longitudinal end of the chamber,
A gas blowing device, wherein an aperture ratio at a central portion in the longitudinal direction of the partition member is larger than an aperture ratio at both ends in the longitudinal direction. The internal space of the chamber has a shape that tapers from one longitudinal end to the other end,
2. The gas blowing device according to claim 1, wherein the opening ratio at one longitudinal end of the partition member is larger than the opening ratio at the other longitudinal end . 3. The gas blowing device according to claim 1, wherein said partition member is arranged at an angle. 2. The opening ratio at both ends of the partition member in the longitudinal direction is such that the opening ratio of the end portion closer to the supply port is larger than the opening ratio of the end portion farther from the supply port. 2. The gas blowing device according to 1. 5. The gas blowing device according to claim 1 , wherein said partition member has a region provided with said opening and a region not provided with said opening. 6. The gas blowing device according to any one of claims 1 to 5 , further comprising air flow generating means for sending the gas from the supply port into the internal space of the chamber. 7. The gas blowing device according to any one of claims 1 to 6 , wherein the straightening member has a uniform opening ratio in the longitudinal direction. a plurality of air blowing means arranged along the moving direction of an object to be dried and blowing air toward the object to be dried;
and one or more heating means for heating the air inside the air blowing means,
8. A drying apparatus, wherein the air blowing means includes the gas blowing device according to any one of claims 1 to 7 . 9. The drying apparatus according to claim 8 , wherein the object to be dried is a member to which liquid is applied and conveyed. liquid applying means for applying liquid to the member being transported;
A device for ejecting liquid, comprising: the drying device according to claim 9 . a applying device for applying the treatment liquid to the member being conveyed;
A treatment liquid deposition device comprising: the drying device according to claim 9 .

Images