JP2019147370A - Gas blow-out device, dryer, liquid discharge device, and process liquid providing device - Google Patents

Abstract

To reduce variations of flow rates of air blowed out in a longitudinal direction.SOLUTION: An air knife 120 includes: a chamber 131 having an internal space 133 into which a gas from a fan 134 is sent through a supply port 133a; and a nozzle 132 which is a slit-like air outlet leading to the internal space 133 of the chamber 131. A plate-like partition member 153 which partitions the internal space 133 into a first space 151 including the supply port 133a and a second space 152 which does not include the supply port 133a is disposed within the chamber 131. The partition member 153 is provided with multiple openings 154 which allow communication between the first space 151 and the second space 152. Further, a rectification member 155 is disposed between the second space 152 and the nozzle 132.SELECTED DRAWING: Figure 4

Description

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

  As a printing apparatus that performs printing by applying a liquid to an object to be heated, such as a roll paper, a continuous paper, a belt-like continuous body (web), or the like, there is a printer that includes a drying device and promotes drying of the applied liquid.

  For example, along the moving direction of the heating target, a long heater that is long in a direction orthogonal to the moving direction of the heating target and a blower having a long nozzle that extends in the direction orthogonal to the moving direction of the heating target alternately. The air heated by the heater is blown from the nozzle of the blower to the object to be heated (Patent Document 1).

Japanese Patent Laid-Open No. 2006-168805

  By the way, in a gas blowing device having a blowing port (nozzle) arranged in a slit shape or in a row that communicates with the internal space of the chamber, depending on the distance from the supply port that feeds air into the chamber to the actual blowing position, the nozzle There is a problem that variation occurs in the overall blowing temperature.

  The present invention has been made in view of the above problems, and an object of the present invention is to reduce variation in blowing temperature.

In order to solve the above-described problem, a gas blowing device according to claim 1 of the present invention includes:
A chamber into which gas is fed from the supply port;
Blowing ports arranged in a slit shape or in a row that blows out gas through the internal space of the chamber;
A partition member for partitioning the internal space of the chamber into a first space including the supply port and a second space not including the supply port;
A rectifying member having a plurality of openings disposed between the second space and the outlet,
The partition member is provided with one or a plurality of openings through the first space and the second space,
The supply port is provided at one end of the chamber in the longitudinal direction;
The opening ratio in the central portion in the longitudinal direction of the partition member was set to be larger than the opening ratio in both end portions in the longitudinal direction.

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

It is a schematic explanatory drawing of an example of the printing apparatus as an apparatus which discharges the liquid based on this invention. It is a plane explanatory view of the drying device concerning a 1st embodiment of the present invention. It is side surface explanatory drawing of the drying apparatus. It is a perspective explanatory view of a gas blowing device in the drying device. It is front explanatory drawing similarly. It is a plane explanatory view of a partition member, a rectification member, and a nozzle similarly. 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 side surface explanatory drawing of the drying apparatus. It is a perspective explanatory view of a gas blowing device in the drying device. It is a perspective explanatory view of the gas blowing device concerning a 4th embodiment of the present invention. It is an isometric view explanatory drawing of the gas blowing apparatus which concerns on 5th Embodiment of this invention. It is a perspective explanatory view of the gas blowing device concerning a 6th embodiment of the present invention. It is an isometric view explanatory drawing of the gas blowing apparatus which concerns on 7th Embodiment of this invention. It is a perspective explanatory view of the gas blowing device concerning an 8th embodiment of the present invention. It is a perspective explanatory view of the gas blowing device concerning a 9th embodiment of the present invention. It is a perspective explanatory view of the gas blowing device concerning a 10th embodiment of the present invention. It is side surface explanatory drawing of the process liquid provision apparatus which concerns on 11th Embodiment of this invention.

  Embodiments of the present invention will be described below 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 apparatus as an apparatus for ejecting liquid according to the embodiment.

  The printing apparatus 100 is an ink jet recording apparatus, and applies liquid that discharges and applies ink, which is a liquid of a required color, to a continuous paper 110 that is a member to be conveyed (conveyed member, heating target, drying target) It has a liquid application unit 101 including liquid discharge heads 111 (111A to 111D) as means.

  In the liquid application unit 101, for example, a full-line type liquid discharge head 111 for four colors is arranged from the upstream side in the conveyance direction of the continuous paper 110, and black K, cyan C, magenta M with respect to the continuous paper 110. Yellow Y liquid is applied. The type 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 disposed facing the liquid application unit 101, and guided by the transport guide member 113. Then, it is transported (moved) to face the liquid application unit 101.

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

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

  The drying device 104 is a plurality of (here, a total of six) blowing means along the moving direction (arrow Y direction: hereinafter referred to as “conveying direction Y”) of the continuous paper 110 to be dried. The air knife 120 which is the gas blowing device which concerns on is arrange | positioned.

  A radiant heating means 121 that is a means for heating the air inside the air knife 120 is disposed outside each air knife 120 and between the adjacent air knives 120, 120.

  Although described in detail later, the air knife 120 includes a long chamber 131 and a nozzle 132 that is a blowout port communicating with the internal space 133 of the chamber 131. The nozzle 132 has a length corresponding to the width in the direction intersecting the transport direction Y.

  In addition, the air knife 120 of the present embodiment includes a fan 134 as an airflow generating unit that feeds gas into the internal space 133 of the chamber 131 at one end in the longitudinal direction of the chamber 131. As the fan 134 as the airflow generating means, for example, a large air volume can be obtained by using a counter-rotating fan or the like.

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

  The radiant heating means 121 is disposed between the air knives 120 and 120 adjacent to each other in the transport direction Y. That is, the air knives 120 and the radiant heating means 121 are alternately arranged.

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

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

  The plurality of air knives 120 and radiant heating means 121 are surrounded by an apparatus exterior 140.

  Next, the operation of the drying device 104 will be described.

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

  In the drying apparatus 104, the radiant heating unit 121 is energized to directly apply the radiant heat from the radiant heating unit 121 to the continuous paper sheet 110, and the continuous paper sheet 110 is heated by the radiant heat.

  Further, 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 and feeding gas into the internal space 133 of the chamber 131, air (warm air) heated in the direction of the arrow d is blown out from the nozzle 132, and is fed to the continuous paper 110 being conveyed. Be sprayed.

  Thereby, 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 knife 120 are alternately arranged, the continuous paper 110 is excessively radiated by the radiant heat generated by the radiant heating means 121 due to the collision jet flow of the gas blown from the air knife 120. Heating is prevented.

  Next, the gas blowing device according to the first embodiment will be described with reference to FIGS. 4 is a perspective explanatory view of the gas blowing device, FIG. 5 is also a front explanatory view, and FIG. 6 is a plan explanatory view of a partition member, a rectifying member, and a 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 fed through a supply port 133 a, and a nozzle 132 that is a slit-shaped blowing port that communicates with the internal space 133 of the chamber 131. And have. The nozzle 132 can also be configured by arranging a plurality of injection ports in a row.

  In the chamber 131, a plate-like partition member 153 that partitions 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 is disposed.

  The partition member 153 is disposed so as to be inclined from the supply port 133a side, which is one end side in the longitudinal direction, to 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 pass through the first space 151 and the second space 152. As shown in FIG. 6A, the opening 154 of the partition member 153 has an opening ratio at the center portion A in the longitudinal direction of the first partition member 153 larger than the opening ratio at both end portions B and C in the longitudinal direction. It is provided to be. The aperture ratio is the ratio of the area of the opening per unit area, and the size (area) of each opening 154 does not have to be the same.

  In the chamber 131, a plate-like rectifying member 155 is disposed between the second space 152 and the nozzle 132.

  The rectifying member 155 is provided with a plurality of openings 156 that pass through the second space 152 and the nozzle 132. As shown in FIG. 6B, the opening 156 of the rectifying member 155 is provided so that the opening ratio in the longitudinal direction of the rectifying member 155 is substantially uniform. Note that the sizes (diameters) of the openings 156 need not all be the same.

  The operation of the air knife 120 configured as described above will be described.

  As shown in FIG. 6A, when the gas is blown by the fan 134 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 from the partition member 153. Then, it passes through each opening 154 and flows into the second space 152.

  Here, since the partition member 153 has an opening ratio of the central portion A larger than the opening ratios of both end portions B and C, the flow rate Pb1 flowing into the second space 152 through each opening 154 of the central portion of the partition member 153 is 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 are larger.

  And the gas which flowed into the 2nd space 152 is disperse | distributed by passing each opening 156 of the rectification | straightening member 155 whose opening ratio of the longitudinal direction shown in FIG. It flows into the slit-shaped nozzle 132 shown in FIG.

  Thereby, the dispersion | variation in the blowing flow volume in the longitudinal direction of the gas which blows off from the nozzle 132 is reduced.

  In addition, the partition member 153 having a relatively large opening ratio in the central portion A allows the fan 134 to the nozzle 132 on the arrangement side (one end side) of the fan 134 in the internal space 133 as compared with the case where the partition member 153 is not provided. The flow path length becomes long.

  Thereby, the time heated by the radiant heat from the radiant heating means 121 is made uniform, and the temperature variation of the blown gas generated in the longitudinal direction of the chamber 131 (the variation of the blown temperature) can be reduced.

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

  Therefore, the temperature of the gas blown from the nozzle 132 is relatively low on the fan 134 side and relatively high on the side opposite to the fan 134, and uneven heating (drying) in the longitudinal direction of the chamber 131 (direction intersecting the transport direction). Unevenness) occurs.

  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 time heated by radiant heat, thereby reducing temperature unevenness and drying unevenness. Can be reduced.

  Thereby, the whole heating nonuniformity (dry nonuniformity) can be reduced in the width direction (direction orthogonal to the conveyance direction Y) of the continuous paper 110 to be conveyed. In this case, it is possible to prevent overheating due to relatively high warm air being blown on the same side in the width direction of the continuous paper 110 to be transported, and to prevent damage such as yellowing of the drying target. can do.

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

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

  Also in this embodiment, the drying device 104 is a gas blowing device according to the present invention that is a plurality of (here, six in total) blowing means along the moving direction (conveying direction Y) of the continuous paper 110 to be dried. The air knife 120 (120A, 120B) is arranged.

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

  120 A of air knives are the 1st ventilation means by which the fan 134 is arrange | positioned as an airflow generation means in the one end part side of the direction which cross | intersects the moving direction (conveyance direction Y) of the continuous paper 110. FIG. An air flow in the direction of arrow a is generated inside the chamber 131 by the fan 134 of the air knife 120 </ b> A, and gas is jetted (blowed out) from the nozzle 132.

  On the other hand, the air knife 120B is a second air blowing unit in which a fan 134 is disposed as an air flow generating unit on the other end side in a direction intersecting the moving direction (conveying direction Y) of the continuous paper 110. An air flow in the direction of arrow b is generated inside the chamber 131 by the fan 134 of the air knife 120 </ b> B, and gas is jetted (blowed out) from the nozzle 132.

  And the air knife 120A which is a 1st ventilation means and the air knife 120B which is a 2nd ventilation means are arrange | positioned alternately along the moving direction (conveyance direction Y) of the continuous paper 110. FIG. Here, the air knives 120A and 120B are alternately arranged every other, but may be alternately arranged every other plurality.

  Thereby, the heating unevenness remaining for each air knife can be made uniform along the moving direction (conveying direction Y) of the continuous paper 110, and the overall heating unevenness (drying unevenness) for the continuous paper 110 is achieved. Can be further reduced.

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

  In the present embodiment, the chamber 131 of the air knife 120 as a gas blowing device has a wide portion 131a whose one end is relatively wide in the transport direction and the other end is in the transport direction in the direction intersecting the transport direction Y. The outer shape of the narrow portion 131b is relatively narrow.

  A fan 134 as airflow generating means is disposed on the wide portion 131a side of the chamber 131. Therefore, the internal space 133 of the chamber 131 of the air knife 120 has a shape that tapers away from the fan 134 from one end to the other end.

  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 disposed.

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

  Then, the two air knives 120 adjacent in the transport direction are arranged so that the wide portions 131a and the narrow portions 131b alternate. Here, four air knives 120A serving as first air blowing means and air knives 120B serving as second air blowing means are alternately arranged.

  At this time, the chambers 131 and 131 of two air knives 120 </ b> A and 120 </ b> B adjacent in the transport direction Y overlap in a direction intersecting the transport direction Y.

  Since it comprised in this way, while reducing the drying nonuniformity with respect to the continuous paper 110, in the conveyance direction Y, the several air knife 120 can be arrange | positioned with high density, and size reduction of a drying apparatus can be achieved, Alternatively, the drying capacity can be improved by high density arrangement.

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

  In the present embodiment, as in the first embodiment, the partition member 153 is configured to increase the opening ratio of the central portion with respect to both ends of the chamber 131 in the longitudinal direction. And the opening ratio in the both ends of the longitudinal direction of the partition member 153 is set as the structure whose opening ratio of the edge part near the supply port 133a is larger than the opening ratio of the edge part far from the supply port 133a.

  Further, in the present embodiment, the chamber 131 has a width in the short direction (width in the transport direction) that gradually decreases from the supply port 133a side toward the central portion in the longitudinal direction, and is opposite to the supply port 133a side from the central portion. It has an outer shape with almost the same width up to the end on the side.

  As described above, the opening ratio at both end portions in the longitudinal direction of the partition member 153 is configured such that the opening ratio at the end portion near the supply port 133a is larger than the opening ratio at the end portion far from the supply port 133a. Thus, the temperature in the longitudinal direction can be made more uniform than in the third embodiment.

  Since the temperature on the supply port 133a side close to the fan 134 is low, if the opening rate on the supply port 133a side is higher than the opening rate on the central portion, the temperature near the nozzle 132 is different between the central portion and the supply port 133a side close to the fan 134. Occurs.

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

  Such a phenomenon occurs because air is blown from one end of the chamber 131 in the longitudinal direction, and the wind that reaches the vicinity of the rectifying member 155 via the opening 134 of the partition member 133 moves slightly to the back. It is considered a thing.

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

  Further, also in the central portion (region B in FIG. 6) in the longitudinal direction of the chamber 31, the aperture ratio of the region near the supply port 133a is made larger than the aperture ratio of the region far from the supply port 133a. It is preferable. In this case, as described above, the opening ratio of the central portion is higher than the opening ratios of both end portions. Therefore, in the longitudinal direction of the chamber 31, the opening in the region closer to the supply port 133a side in the central portion. The ratio becomes the area of the maximum aperture ratio.

  Table 1 shows the measurement results of the distance from the center (position: positive on the supply port 133a side and negative on the opposite side of the supply port 133a), blowing temperature, and blowing speed. .

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

  In this way, by making the aperture ratio of the area on the fan 134 side (area A in FIG. 6) larger than the aperture ratio of the area on the opposite side to the fan 134 (area C in FIG. 6), It can suppress that the temperature of an edge part becomes high with respect to the edge part by the side of the fan 134, and a center part. As a result, the temperature of the air blown from the nozzle 132 can be made uniform.

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

  In the present embodiment, in the configuration of the first embodiment, the partition member 153 is configured such that one opening 154 is provided in the central portion in the longitudinal direction and no opening is provided at both ends. That is, the partition member 153 includes a region where the opening 154 is provided and a region where the opening 154 is not provided. In addition, the opening part 154 of this embodiment is an opening of a larger area than the opening part 154 in each said embodiment.

  As described above, even when a plurality of openings are not provided in the partition member 153 and one opening 154 is provided in the central portion, the same effects as those of the above embodiments can be obtained.

  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 blowing device according to the embodiment.

  In the present embodiment, in the configuration of the third embodiment, as in the fifth embodiment, the partition member 153 is provided with one opening 154 at the center in the longitudinal direction and no openings at both ends. It is configured. The opening 154 in the present embodiment is an opening having a larger area than the opening 154 in each of the embodiments.

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

  In this embodiment, the partition member 153 has a configuration in which a plurality of openings 154 are provided at the center in the longitudinal direction, and no openings are provided at both ends. Also in this case, the partition member 153 includes a region where the opening 154 is provided and a region where the opening 154 is not provided.

  As described above, even in the configuration in which the plurality of openings 154 are provided in the central portion of the partition member 153 and the openings are not provided in both end portions, the same effects as those of the above-described embodiments can be obtained.

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

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

  A partition member 153 that partitions 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 is disposed in the chamber 131.

  The partition member 153 is provided with a plurality of openings 154 so that the opening ratio at both ends in the longitudinal direction is larger than the opening ratio at the center in the longitudinal direction.

  In addition, a rectifying member 155 is disposed between the second space 152 and the nozzle 132 as in the above embodiments.

  With this configuration, when gas is fed into the first space 151 of the internal space 133 from the supply port 133a at the center in the longitudinal direction of the chamber 131, the gas flows into the second space 152 from both longitudinal ends of the partition member 153. The flow rate to be increased is larger than the flow rate flowing into the second space 152 from the central portion of the partition member 153 in the longitudinal direction.

  Thereby, the dispersion | variation in the blowing temperature in the longitudinal direction of the gas which blows off from the nozzle 132 is 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 blowing device according to the embodiment.

  In the present embodiment, the partition member 153 is provided with one opening 154 at both ends in the longitudinal direction, and no opening 154 is provided at the center in the longitudinal direction.

  Even if configured in this way, 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, and it is possible to prevent the flow rate in the central portion from increasing locally and blow out from the nozzle 132. The variation in the flow rate of the blown gas in the longitudinal direction 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 blowing device according to the embodiment.

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

  Even if comprised in this way, the effect similar to the said 1st Embodiment can be acquired. This embodiment can also be applied to the second to ninth embodiments.

  In each of the above-described embodiments, an example in which the chamber 131 is provided with the fan 134 as an airflow generating unit that sends an airflow from the supply port 133a to the internal space 133 of the chamber 131 is described. However, the airflow generating unit is additionally provided. Alternatively, a configuration may be adopted in which the gas is fed into the chamber 131 by a duct or the like.

  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 application apparatus according to the embodiment.

  The treatment liquid application apparatus 300 includes a coating apparatus 301 that applies a treatment liquid to a drying object 310 in an apparatus exterior 304, and a drying apparatus 302 according to the present invention that dries the drying object 310 to which the treatment liquid is applied. It has. Further, transport rollers 305 and 306 for transporting the drying object 310 are provided.

  Here, as the treatment liquid, for example, a modifying material that modifies the surface of the drying target 310 by being applied to the surface of the drying target 310 may be used. Specifically, by applying uniformly to the drying object 310 in advance, the moisture of the ink quickly permeates the drying object 310, thickens the color component, and further accelerates the drying so that bleeding (feathering) occurs. And fixing agents (setting agents) that can prevent productivity and increase in productivity (number of images output per unit time).

  In terms of composition, the treatment liquid is, for example, celluloses that promote water permeation with respect to a surfactant (any one of anionic, cationic, nonionic, or a mixture of two or more thereof). A solution or the like to which a base such as hydroxypropylcellulose and talc fine powder is added can be used. Furthermore, fine particles can be contained.

  The coating apparatus 301 includes a transport roller 511 that transports the drying target 310, a coating roller 512 that applies the processing liquid 501 to the drying target 310 so as to face the transport roller 511, and supplies the processing liquid 501 to the coating roller 512. And a squeeze roller 513 that thins the film (the film of the treatment liquid 501). The rotation direction of each roller is the arrow direction in the figure. These rollers are arranged such that the application roller 512 is in contact with the conveyance roller 511 and the squeeze roller 513 is in contact with the application roller 512.

  When the treatment liquid 501 is applied to the drying object 310 by the coating device 301, the treatment liquid 501 in the liquid tray 514 is scooped up on the surface of the squeeze roller 513 by rotating the squeeze roller 513 in the direction of the arrow in the drawing, and the liquid film In the state of the layer 501a, it is transferred by its rotation and collected 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 valley portion is squeezed with pressure when passing between the rollers 513 and 512, and the processing liquid A liquid film layer 501 c of 501 is formed and transferred to the transport roller 511 side by the rotation of the application roller 512. The liquid film layer 501 c transferred by the application roller 512 is applied to the drying object 310.

  Thus, the drying object 310 to which the liquid film layer 501c of the processing liquid 501 is applied is transported to the 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 drying object 310 that has been subjected to the drying process by the drying device 302 is sent to the next step (for example, the liquid application unit 101 in the first embodiment).

  In addition, what can be hardened | cured by irradiating active energy rays, such as an ultraviolet-ray, as a process liquid 501 can also be used. In this case, an exposure light source 303 (imaginary line shown) as an exposure unit is disposed between the coating device 301 and the drying device 302.

  As a result, after applying the treatment liquid 501 to the drying object 310, the active energy ray is irradiated from the exposure light source 303 to partially cure (semi-cure) the treatment liquid 501, and then the treatment liquid 501 is dried by the drying device 302. Can be dried. This configuration is particularly effective when a treatment liquid 501 containing a photopolymerization initiator and having a high water content is used.

  The photopolymerization initiator contained in the treatment liquid 501 is preferably a photoradical polymerization initiator, and includes aromatic ketones, phosphine oxide compounds, aromatic onium salt compounds, organic peroxides, thio compounds, hexaarylbiimidazole compounds, ketos. 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, for example, visible light, α-rays, γ-rays, X-rays, and electron beams in addition to ultraviolet rays. Examples of the active energy ray exposure light source include a mercury lamp, a metal halide lamp, a light emitting diode, and a laser diode.

  In addition, the coating device 301 may apply | coat using a liquid discharge head.

  In each of the above embodiments, the air knife that is the blowing means is described in an example that is arranged in a direction orthogonal to the conveyance direction Y, but the air knife that is the blowing means intersects with the conveyance direction Y at an angle other than orthogonal. It can also be set as the structure arrange | positioned in the direction to do.

  Further, in each of the above-described embodiments, the example in which the drying target (the heating target, the member to be transported) is the continuous paper is described, but the present invention is not limited thereto, and the drying is performed by the drying device according to the present invention. If it is a member, it will not specifically limit. For example, the object to be dried may be a continuous body such as continuous paper, roll paper, and web, a cut sheet material, wallpaper, a sheet for electronic circuit boards such as prepreg, and the like.

  In addition to recording images such as characters and figures with liquids such as ink, the objects to be dried are given images with no meaning such as patterns with liquids such as ink for the purpose of decoration and decoration. It's okay.

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

  When a liquid discharge head is used as the liquid application means, a thermal actuator using an electrothermal transducer such as a piezoelectric actuator (laminated piezoelectric element and thin film piezoelectric element), a heating resistor as an energy generating source for discharging liquid, vibration Those using an electrostatic actuator composed of a plate and a counter electrode are included.

  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 (air blowing means, gas blowing device)
121 Radiation heating means (heating means)
131 Chamber 132 Nozzle (outlet)
133 Internal space 134 Fan (air flow generation means)
151 1st space 152 2nd space 153 Partition member 154 Opening 155 Flow regulating member 156 Opening 300 Treatment liquid applying device 301 Coating device 302 Drying device

Claims (12)

A chamber into which gas is fed from the supply port;
Blowing ports arranged in a slit shape or in a row that blows out gas through the internal space of the chamber;
A partition member for partitioning the internal space of the chamber into a first space including the supply port and a second space not including the supply port;
A rectifying member having a plurality of openings disposed between the second space and the outlet,
The partition member is provided with one or a plurality of openings through the first space and the second space,
The supply port is provided at one end of the chamber in the longitudinal direction;
The gas blowing device according to claim 1, wherein an opening ratio at a central portion in the longitudinal direction of the partition member is larger than an opening ratio at both end portions in the longitudinal direction. The internal space of the chamber has a shape that tapers from one end in the longitudinal direction toward the other end,
The gas blowing device according to claim 1, wherein an opening ratio on the other end side in the longitudinal direction of the partition member is larger than an opening ratio on the one end side in the longitudinal direction. The gas blowing device according to claim 1, wherein the partition member is arranged to be inclined. The opening ratio at both end portions in the longitudinal direction of the partition member is such that the opening ratio at the end portion near the supply port is larger than the opening ratio at the end portion far from the supply port. The gas blowing device according to 1. A chamber into which gas is fed from the supply port;
Blowing ports arranged in a slit shape or in a row that blows out gas through the internal space of the chamber;
A partition member for partitioning the internal space of the chamber into a first space including the supply port and a second space not including the supply port;
A rectifying member having a plurality of openings disposed between the second space and the outlet,
The partition member is provided with one or a plurality of openings through the first space and the second space,
The supply port is provided at a central portion in the longitudinal direction of the chamber;
The gas blowing device according to claim 1, wherein an opening ratio at both end portions in the longitudinal direction of the partition member is larger than an opening ratio at a central portion in the longitudinal direction. The gas blowing device according to claim 1, wherein the partition member includes a region where the opening is provided and a region where the opening is not provided. The gas blowing device according to any one of claims 1 to 6, further comprising an airflow generating means for sending the gas from the supply port to the internal space of the chamber. The gas blowing device according to any one of claims 1 to 7, wherein an opening ratio in the longitudinal direction of the rectifying member is uniform. A plurality of blowing means arranged along the moving direction of the drying object and blowing air toward the drying object;
One or a plurality of heating means for heating the air inside the blowing means,
9. A drying apparatus, wherein the blowing means includes the gas blowing device according to any one of claims 1 to 8. The drying apparatus according to claim 9, wherein the drying target is a member to which a liquid is applied and conveyed. A liquid applying means for applying a liquid to a member to be conveyed;
An apparatus for discharging liquid, comprising: the drying apparatus according to claim 10. An applying device for applying a treatment liquid to a member to be conveyed;
And a drying apparatus according to claim 10.

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