JP7075614B2 - Drying equipment, printing equipment and liquid application equipment - Google Patents

Description

The present invention relates to a drying device, a printing device and a liquid applying device.

Conventionally, a drying device for transporting and drying an object to be dried, such as a sheet material to which a liquid is applied, is known.

For example, in Patent Document 1, a base material (object to be dried) to which a liquid is applied is wound around an outer peripheral surface and rotates while heating the base material, so that the base material is formed along a transport path on the outer peripheral surface. Disclosed is a drying device in which a heating roller for transporting a heating roller and a plurality of guide rollers having a diameter smaller than that of the heating roller for guiding the base material to the heating roller are arranged. This drying device is provided with a blowing means for blowing air to the base material wound around the outer peripheral surface of the heating roller.

In the conventional drying device that dries the object to be dried by using the blower by the blower means, it is necessary to increase the number of blower means in order to realize the drying in a shorter time, so that the problem is that the device becomes large. was there.

In order to solve the above-mentioned problems, the present invention is a drying device for transporting and drying an object to be dried, and the first path to which the object to be dried is conveyed and the transport direction of the first path are different from each other. It has a transporting means for transporting the object to be dried so as to pass through a different second path, and a blowing means for blowing air toward the object to be dried, and the transporting means is provided with ink which is a liquid. The sheet material to be transported is conveyed as the object to be dried, and the blower means is arranged at a position where the blower port faces both the first path and the second path, and passes through the first path. The gas is blown toward both the dried material and the dried material passing through the second path, and the gas removed from the vicinity of the dried material carried through the first path and the second path by the blowing of the blowing means is recovered. The collection port of the collection means is arranged at a position facing both the first path and the second path, and in the transfer means, the back surface of the ink-applied surface of the sheet material is a heating drum in the first path. It is characterized in that the sheet material is conveyed so as to be in contact with each other and the back surface of the sheet material is in contact with the heating roller in the second path .

According to the present invention, efficient drying can be performed even with a small amount of air blowing means.

It is a schematic explanatory drawing of the printing apparatus which concerns on 1st Embodiment. It is explanatory drawing which shows the structure of the drying apparatus in the printing apparatus. It is explanatory drawing which provides the explanation of the contact part of the continuous paper with respect to the heating roller of the drying apparatus. It is explanatory drawing which provides the explanation of the contact distance and winding angle of a continuous paper with respect to a heating roller and a heating drum in the drying apparatus. It is a table summarizing the results of measuring the height of the cock ring generated on the continuous paper and the pitch of the cock ring by changing the diameter of the heating roller and confirming the presence or absence of the cock ring that can be visually recognized. It is explanatory drawing which schematically showed an example of the air supply / exhaust device in the drying device. It is explanatory drawing which shows the structure of the drying apparatus which concerns on 2nd Embodiment. It is explanatory drawing which shows the structure of the drying apparatus which concerns on 3rd Embodiment. It is a schematic explanatory drawing of the printing apparatus which concerns on 4th Embodiment. It is a schematic explanatory drawing of the processing liquid application apparatus which concerns on 5th Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
First, the printing apparatus according to the first embodiment will be described with reference to FIG. FIG. 1 is a schematic explanatory view of the device.

This printing device is an inkjet recording device, and is a liquid applying means for ejecting and applying ink, which is a liquid of a required color, to continuous book paper 110, which is a sheet material as a member (object to be dried) to be conveyed. It has a liquid application unit 101 including a liquid discharge head.

In the liquid application section 101, for example, full-line heads 111A, 111B, 111C, 111D for four colors are arranged from the upstream side in the transport direction of the continuous paper 110. The heads 111A, 111B, 111C, and 111D each apply black K, cyan C, magenta M, and yellow Y liquids to the continuous paper 110. The types and numbers of colors are not limited to this.

The continuous paper 110 is unwound from the original winding roller 102, is fed by the transport roller 112 of the transport unit 103 onto the transport guide member 113 arranged to face the liquid applying portion 101, and is guided by the transport guide member 113. Will be transported.

The continuous paper 110 to which the liquid is applied by the liquid application unit 101 is sent by the discharge roller 114 via the drying device 104 according to the present embodiment, 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 FIG.
FIG. 2 is an explanatory diagram showing the configuration of the drying device, and FIG. 3 is an explanatory diagram provided for explaining a contact portion of the continuous paper with respect to the heating roller.

In the drying device 104, as the members constituting the heating means 10, the continuous paper 110 comes into contact with the heating rollers 11A to 11F as the six heating members, the heating drums 12 as the curved surface heating members, and the heating rollers 11A to 11F. It is equipped with five contact guide rollers 13A to 13E that guide the user. Further, the heating means 10 is provided with guide rollers 17A to 17E for guiding the continuous book paper 110, and guide rollers 17F for winding the continuous book paper 110 around the heating drum 12. In the present embodiment, the heating drum 12 also serves as a transporting means for imparting a transporting force to the continuous paper 110. The plurality of heating rollers 11A to 11F and the guide rollers 17A to 17F are driven rollers that are carried around by contacting and transporting the continuous paper 110.

The heating rollers 11A to 11F are contact heating members having a curved peripheral surface (contact surface 11a) in contact with the continuous paper 110. Further, the contact guide rollers 13A to 13E guide the continuous paper 110 so as to come into contact with the contact surfaces 11a of the heating rollers 11E to 11A.

Here, the plurality of heating rollers 11A to 11F (hereinafter, referred to as "heating rollers 11" when not distinguished; the same applies to other members) are arranged side by side in an arc shape (curved shape) as shown in FIG. There is. Further, the contact guide rollers 13 are arranged between the adjacent heating rollers 11.

Here, the distance from the center of the heating drum 12 to the center of each heating roller 11 is the same, but the center of the heating drum 12 and the center of the arcuate curvature of the heating rollers 11 arranged in an arc shape are the same. It doesn't have to match.

In the transport path (transport path, transport path) 20 of the continuous book paper 110, the continuous book paper 110 passes through the contact regions (heating regions) of the plurality of heating rollers 11A to 11F, that is, to the plurality of heating rollers 11A to 11F. While in contact with each other, the upstream path Y1 conveyed in the first direction (Y1 direction) and the third direction (Y3) along the peripheral surface of the heating drum 12 are wound around almost the entire circumference of the heating drum 12. The heating drum transport path Y3, which is the first path to be transported in the (direction) direction, and the second path, which is transported in the second direction (Y2 direction) while recontacting the plurality of heating rollers 11E to 11A that are in contact with each other in the upstream path. The downstream route Y2 is included.

In this embodiment, two or more heating rollers 11 (heating members) come into contact with each other when the continuous paper 110 is conveyed along the downstream path Y2, but one heating roller 11 (heating member). It may be a route that comes into contact with. In other words, when the continuous paper 110 is conveyed along the downstream path Y2, it is not necessary to recontact and convey all of the plurality of heating rollers 11A to 11F. Similarly, in the present embodiment, the continuous paper 110 constitutes a path in contact with two or more heating rollers 11 (heating members) when being conveyed in the upstream path Y1, but one heating roller 11 (heating member) is configured. ) May be the path of contact. In other words, when the continuous paper 110 is conveyed along the upstream path Y1, it is not necessary to recontact and convey all of the plurality of heating rollers 11A to 11F. Further, the number of heating rollers that come into contact during transportation of the upstream route Y1 and the number of heating rollers that come into contact during transportation of the downstream route Y2 do not have to be the same.

In the present embodiment, the continuous paper 110 is conveyed in the upstream path Y1 while being in contact with the outer contact regions (peripheral surface portion a on the outer side in the radial direction of curvature) of the plurality of heating rollers 11A to 11F arranged in an arc shape. .. After that, the continuous paper 110 reaches the peripheral surface of the heating drum 12, is wound around almost the entire circumference of the heating drum 12, passes through the heating drum transport path Y3 while being in contact with the heating drum 12, and then passes through the guide roller 17F and the contact guide roller. At 13A, it is guided to the heating roller 11E again. Then, the continuous paper 110 is guided downstream by the contact guide rollers 13A to 13E to the inner contact regions (peripheral surface portion b on the inner side in the radial direction of curvature) of the plurality of heating rollers 11A to 11F arranged in an arc shape. It is conveyed along the path Y2.

At this time, as shown in FIG. 3, the continuous paper 110 conveys the upstream path Y1 and the downstream path Y2 while simultaneously contacting two separated portions (a portion and b portion in FIG. 3) of the same heating roller 11. Will be done. In this way, the continuous paper 110, which is the object to be dried, is simultaneously heated through two different heating regions (contact regions) of the same heating member (heating roller). As a result, the object to be dried can be efficiently dried with a small number of heating members.

In particular, in the present embodiment, since the heating members are arranged in an arc shape along the peripheral surface of the heating drum 12, the device can be downsized even if the number of the heating members is increased. Then, the drying speed can be increased by increasing the number of heating members.

In the present embodiment, the ink is not transferred even if the water of the ink applied to the continuous paper 110 is evaporated (vaporized) and the liquid-applied surface of the continuous paper 110 is directly touched when the upstream path Y1 is conveyed. Let it dry. Thereby, in the downstream path Y2, the contact guide roller 13 can be arranged on the liquid applying surface side of the continuous paper 110. After that, by being conveyed along the downstream path Y2, when the continuous paper 110 is wound by the take-up roller 105, the ink on the front surface of the continuous paper 110 is prevented from being transferred to the back surface of the continuous paper 110 and peeled off. Dry until ready.

Further, in the drying device 104 of the present embodiment, the heating drum 12 as a curved surface heating member is arranged in the heating drum transport path Y3. The heating drum 12 has a curved contact surface (peripheral surface) having a curvature smaller than that of the contact surface (contact region) of the heating roller 11. The heating drum 12 is rotationally driven, and the heating roller 11 is rotated around the continuous paper 110 to be conveyed. Then, the heating roller 11F, the heating drum 12, and the guide roller 17F form a transport path (transport path) for winding the continuous paper 110 around a region of 70% or more, preferably 80% or more of the circumference of the heating drum 12. is doing.

At this time, the contact distance of the continuous paper 110 with respect to the heating drum 12 is longer than the contact distance of the continuous paper 110 with respect to the heating roller 11. The "contact distance" is the distance at which the continuous paper 110 is in contact with the peripheral surface in the direction (conveying direction) along the circumferential direction of the heating drum 12 and the heating roller 11. When the heating member is a curved surface member having a curved surface as a contact surface (contact region) like the heating roller 11 of the present embodiment, the heating member is in contact with the curved surface in a direction along the circumferential direction (conveyance direction) of the curved surface. The distance you are.

Here, the contact distance and the winding angle will be described with reference to FIG.
As shown in FIG. 4, the contact distance L2 between the contact surface 12a, which is the peripheral surface of the heating drum 12, and the continuous paper 110 is the contact distance between the contact surface 11a, which is the peripheral surface of the heating roller 11, and the continuous paper 110. The transport path is configured to be longer than L1. Here, the winding angle θ2 of the continuous paper 110 with respect to the contact surface 12a of the heating drum 12 is larger than the winding angle θ1 of the continuous paper 110 with respect to the contact surface 11a of the heating roller 11 (θ2> θ1).

As for the winding angles θ2 and θ1 (which are collectively referred to as “winding angle θ”), as shown in FIG. 4, the continuous paper 110 contacts the contact surfaces 12a and 11a of the heating drum 12 and the heating roller 11. It is the meaning of the angle formed by the starting point Ps and the ending point Pe with respect to the center O. Therefore, when the winding angle θ is large, the contact distance is long if the diameter of the rotating body is the same, and the contact distance is long as the diameter of the rotating body is large even if the winding angle θ is the same.

In the present embodiment, the diameter of the heating drum 12 is larger than that of the heating roller 11 and the winding angle θ2 is larger than θ1, so that in any case, the continuous paper 110 with respect to the contact surface 12a of the heating drum 12 The contact distance L2 is longer than the contact distance L1 of the continuous paper 110 with respect to the contact surface 11a of the heating roller 11.

As described above, even if the winding angle θ is the same, the larger the diameter of the rotating body, the longer the contact distance. Therefore, even if the diameters of the heating drum 12 and the heating roller 11 are made the same and the winding angle θ2 is larger than θ1, the contact distance L2 of the continuous paper 110 with respect to the contact surface 12a of the heating drum 12 is the contact of the heating roller 11. The contact distance of the continuous paper 110 with respect to the surface 11a is longer than the contact distance L1.

In the present embodiment, the continuous paper 110 heated by the heating roller 11 in the upstream path Y1 can be further heated and dried by applying a large amount of heat by the heating drum 12 in the heating drum transfer path Y3. As a result, the continuous paper 110 immediately after the liquid is applied is first conveyed in contact with the heating roller 11 in the upstream path Y1 to reduce cockling, and then heated in the heating drum transfer path Y3. Since it is wound around the drum 12, it can be in close contact with the peripheral surface of the heating drum 12, and efficient drying can be performed.

That is, since the strength of the continuous paper 110 has decreased in a state where time has not passed since the liquid was applied, the circumference of the rotating body is covered over a wide range (long contact distance) on the back surface side of the continuous paper 110. It is difficult to make it adhere to the surface (contact surface). Therefore, in the initial state in which the applied liquid has not been dried, the winding angle of the continuous paper 110 around the heating roller 11 is reduced to shorten the contact distance. Here, by increasing the curvature of the heating roller 11, the tension generated during the transportation of the continuous paper 110 changes to a pressing force at the contact portion with the heating roller 11, so that the contact state with the heating roller 11 becomes uniform. Become. In this state, the continuous paper 110 suppresses or corrects the generation of cock rings and wrinkles, and when passing through the plurality of heating rollers 11, the liquid on the continuous paper 110 uniformly supplies the heat required for drying. You will be ready to do it.

The continuous paper 110, in which cockling is suppressed and drying is progressing in this way, can be brought into close contact with the peripheral surface (curved surface) of the continuous paper 110 even if the contact distance with the heating drum 12 is lengthened. Therefore, in the heating drum 12 arranged on the downstream side of the plurality of heating rollers 11, a large amount of heat is supplied to the continuous paper 110 by increasing the contact distance of the continuous paper 110, which is efficient in a short time. Can be dried.

Further, in the present embodiment, the back surface of the continuous paper 110 is re-contacted with the heating roller 11 in the downstream path Y2 on the downstream side of the heating drum transport path Y3 in the transport direction. As a result, for example, the heat transfer of the heating roller 11 in the upstream path Y1 and the heat transfer of the heating drum 12 in the heating drum transfer path Y3 evaporate the water content of the ink, and then the heat transfer of the heating roller 11 in the downstream path Y2. The solvent of the ink can be evaporated by heat to fix the ink on the continuous book paper 110.

Next, an example of the relationship between the roller diameter of the heating roller 11 and the cock ring of the continuous paper 110 will be described with reference to FIG.
FIG. 5 shows the results of changing the diameter of the heating roller 11 to measure the height of the cock ring generated on the continuous paper 110 and the pitch of the cock ring, and confirming the presence or absence of the cock ring that can be visually recognized. From this result, in this example, by setting the diameter of the heating roller 11 to 200 mm, the cockling height is almost halved as compared with the case where the diameter of the heating roller 11 is 250 mm, and the diameter of the heating roller 11 is 100 mm or less. By setting, you can see that the cock ring is gone. Therefore, the diameter of the heating roller 11 is preferably 200 mm or less, more preferably 100 mm or less.

Next, the air supply / exhaust device provided in the drying device 104 of the present embodiment will be described.
As shown in FIG. 2, the drying apparatus 104 of the present embodiment includes six heating rollers 11A to 11F arranged in an arc along the peripheral surface of the heating drum 12, and the peripheral surface of the heating drum 12. Five air supply / exhaust devices 30A to 30E, which form a part of the air blowing means, are arranged in the space between the air and the air. These air supply / exhaust devices 30 blow air toward both the continuous paper 110 passing through the heating drum transport path Y3 and the continuous paper 110 passing through the downstream path Y2. By performing such air blowing (air supply), it is possible to realize drying in a shorter time than when the continuous paper 110 is dried only by heat transfer of the heating roller 11 or the heating drum.

Further, in the drying device 104 of the present embodiment, since the continuous book paper 110 is transported in a limited device by bending or folding the transport path of the continuous book paper 110, the moisture vaporized in the transport path is carried out. And the concentration of solvent is high. Therefore, once vaporized water or solvent reattaches to the continuous paper 110, which tends to cause a decrease in drying efficiency. Therefore, the air supply / exhaust device 30 of the present embodiment functions as a recovery means for recovering (exhausting) the air (gas containing liquid components such as vaporized moisture and solvent) removed from the vicinity of the continuous book paper 110 by blowing air. Also equipped. As a result, it is possible to prevent the vaporized water and the solvent from reattaching to the continuous paper 110, and it is possible to improve the drying efficiency.

In particular, in the space between the heating roller 11 and the peripheral surface of the heating drum 12, air containing water and a solvent heated and vaporized by both of them tends to accumulate. In the present embodiment, since the air supply / exhaust device 30 also having a function as a recovery means is arranged in the space where the air containing water or solvent easily collects, the air containing water or solvent is efficiently exhausted. And the drying efficiency can be further improved.

FIG. 6 is an explanatory diagram schematically showing an example of the air supply / exhaust device 30 of the present embodiment.
The air supply / exhaust device 30 of the present embodiment includes a ventilation duct 31 and a recovery duct 32 inside the device. The air duct 31 has two air vents 31a, one air port 31a faces the continuous paper 110 passing through the heating drum transport path Y3, and the other air outlet 31a faces the continuous paper 110 passing through the downstream path Y2. It is provided so as to face the.

The blower duct 31 discharges the air supplied from the airflow generator 36 such as a blower fan, which is a part of the blower means, from the two blower ports 31a as shown by the arrow A in the figure, thereby providing the heating drum transport path Y3. Air is simultaneously blown onto both the continuous book paper 110 passing through and the continuous book paper 110 passing through the downstream path Y2. By blowing (blowing) this air, the drying of the continuous paper 110 is promoted, and the air 35 containing the vaporized water and liquid components such as a solvent is removed from the vicinity of the continuous paper 110 to replenish the liquid components. Reattachment to the book paper 110 can be suppressed.

The airflow generator 36 of the present embodiment includes a heating means such as a heater, and warm air is blown from the two airflow ports 31a of the airflow duct 31. Thereby, the drying of the continuous paper 110 can be further promoted. In particular, in the present embodiment, the heating means is controlled by a control unit such as a controller as a temperature maintaining means so that the temperature of the warm air blown from the two air outlets 31a is equal to or higher than the boiling point of the liquid to be vaporized such as the solvent of the ink. It is preferable to control. Specifically, a temperature sensor such as a ventilation duct 31 is installed, and the heating means is controlled so as to be equal to or higher than the boiling point of the liquid to be vaporized based on the detection result of the temperature sensor.

Further, the collection duct 32 in the air supply / exhaust device 30 of the present embodiment has two collection ports 32a, one collection port 32a faces the continuous paper 110 passing through the heating drum transport path Y3, and the other collection port 32a. 32a is provided so as to face the continuous paper 110 passing through the downstream path Y2.

The recovery duct 32 is put into a negative pressure state by an exhaust device 37 such as an intake fan, and a suction airflow as shown by an arrow B in the figure is generated in the two recovery ports 32a. As a result, the air 35 removed from the vicinity of the continuous book paper 110 by the air blown from the air outlet 31a of the air duct 31 is collected in the collection duct 32 from the two collection ports 32a. As a result, it is possible to prevent the vaporized water and the solvent from reattaching to the continuous paper 110, and it is possible to improve the drying efficiency.

The air recovered in the recovery duct 32 is exhausted to the outside of the drying device 104. At this time, it is preferable to cool and condense the air by providing a cooling means for cooling the recovered air, recover the liquid component in the recovered air, and then exhaust the air to the outside of the drying device 104.

By the way, since the space in which the air supply / exhaust device 30 of the present embodiment is arranged is narrow, the air blown from the two air outlets 31a of the air supply / exhaust device 30 is reflected by the continuous paper 110 and collides with each other to disturb the air flow. However, there is a risk of reducing the effect of ventilation (air supply) and the effect of recovery (exhaust).

Here, in the present embodiment, the continuous paper 110 of the heating drum transport path Y3 and the continuous paper 110 of the downstream path Y2, in which air is blown from the two air outlets 31a of the air supply / exhaust device 30, are conveyed in opposite directions. There is. Therefore, in the vicinity of the continuous paper 110 of the heating drum transport path Y3 and the vicinity of the continuous paper 110 of the downstream path Y2, airflows flowing in opposite directions are generated. As a result, even if air is simultaneously blown onto the continuous paper 110 of the heating drum transport path Y3 and the continuous paper 110 of the downstream path Y2, the air 35 reflected by the respective continuous paper 110 will be mutually caused by these airflows. It is swept in the opposite direction and does not collide with each other. Therefore, the effect of blowing air (air supply) does not decrease.

Further, in the present embodiment, as shown in FIG. 6, the two collection ports 32a of the air supply / exhaust device 30 are arranged on the downstream side in the transport direction of the continuous paper 110 with respect to the two air outlets 31a corresponding to each. ing. Therefore, the air 35 blown from the two air outlets 31a and reflected by the continuous paper 110 is recovered by the airflow (airflow flowing in the transport direction) generated in the vicinity of the continuous paper 110. The mouth 32a is flushed to the opposite location. As a result, the air 35 can be efficiently recovered in the recovery duct 32.

Next, a second embodiment of the present invention will be described with reference to FIG. 7.
FIG. 7 is an enlarged explanatory view of a main part of the drying device in the same embodiment.
The second embodiment is different from the first embodiment described above in that the heating drum 12 as a curved surface heating member is not provided.

In the drying device 104 of the present embodiment, as the members constituting the heating means 10, the four heating rollers 11A to 11E and the four heating rollers 11A to 11E as the five heating members are guided so that the continuous paper 110 comes into contact with the heating rollers 11A to 11E. The contact guide rollers 13A to 13D are provided. Further, the heating means 10 is also provided with guide rollers 17A to 17E for guiding the continuous paper 110. In the present embodiment, the transport path (transport path, transport path) 20 of the continuous paper 110 is formed by the plurality of heating rollers 11 and the contact guide roller 13. The heating rollers 11A to 11E also serve as a conveying means for imparting a conveying force to the continuous paper 110 by rotating.

The transport path 20 is in contact with the upstream path Y1 which is the first path in which the continuous paper 110 is transported in the first direction (Y1 direction) while contacting the plurality of heating rollers 11A to 11E in the upstream path Y1. It includes a downstream path Y2 that is conveyed in the second direction (Y2 direction) while being in contact with the plurality of heating rollers 11D to 11A again. The number of heating rollers 11 (heating members) constituting each of the paths Y1 and Y2 is appropriately set in the same manner as in the first embodiment described above.

In the present embodiment, the continuous paper 110 is conveyed in the upstream path Y1 while being in contact with the outer contact regions (peripheral surface portion a on the outer side in the radial direction of curvature) of the plurality of heating rollers 11A to 11E arranged in an arc shape. .. After that, the continuous book paper 110 is turned around in the downstream path Y2, and the contact guide rollers are formed in the inner contact regions (peripheral surface portion b inside in the radial direction of curvature) of the plurality of heating rollers 11A to 11E arranged in an arc shape. It is guided by 13A to 13D and conveyed while being in contact with each other. In this way, the continuous paper 110, which is the object to be dried, is simultaneously heated through two different heating areas (contact areas) of the same heating member (heating roller), so that the object to be dried is efficiently dried with a small number of heating members. be able to.

As shown in FIG. 7, one air supply / exhaust device 30A to 30D, which is a part of the air blowing means in the present embodiment, is provided in the space between the five heating rollers 11A to 11E arranged side by side in an arc shape. Each is arranged. These air supply / exhaust devices 30 are conveyed while contacting the outer contact regions of the plurality of heating rollers 11A to 11E and the continuous book paper 110 and the inner contact regions of the plurality of heating rollers 11E to 11A. Blow air toward both of the continuous paper 110. By performing such air blowing (air supply), it is possible to realize drying in a shorter time than in the case where the continuous paper 110 is dried only by the heat transfer of the heating roller 11.

Further, the air supply / exhaust device 30 of the present embodiment, as in the first embodiment described above, provides air (gas containing vaporized water, a liquid component such as a solvent, etc.) removed from the vicinity of the continuous book paper 110 by blowing air. It also has a function as a collection means for collection (exhaust). As a result, it is possible to prevent the vaporized water and the solvent from reattaching to the continuous paper 110, and it is possible to improve the drying efficiency.

However, in the present embodiment, since the air supply / exhaust device 30 blows air to the back surface of the continuous paper 110 opposite to the liquid-applied surface, the continuous paper 110 (thick paper or the like) having low air permeability is used. Therefore, the drying efficiency is inferior to that of the first embodiment described above. However, for the highly breathable continuous paper 110 (thin paper or the like), sufficient drying efficiency can be obtained even in this embodiment.

In the drying device 104 according to the above embodiment, a plurality of heating rollers 11 are arranged side by side in an arc shape (curved shape), but some or all of them may be arranged side by side in a straight line. For example, a path bent in the middle of the Y1 direction (or the Y2 direction), a crank-shaped path, or the like may be used.

Next, a third embodiment of the present invention will be described with reference to FIG.
FIG. 8 is an enlarged explanatory view of a main part of the drying device in the same embodiment.
In the first embodiment and the second embodiment described above, the heating roller with which the continuous paper 110 is in contact with the upstream path Y1 is contacted again with the downstream path Y2, but in the third embodiment, the heating roller is contacted again. The heating roller with which the continuous paper 110 is in contact with the upstream path Y1 is not contacted with the downstream path Y2.

The drying device 104 of the present embodiment has heating rollers 11A and 11B as two heating members, a guide roller 17 for changing the transport direction of the continuous paper 110, and heating as members constituting the heating means 10. It is equipped with a drum 12. In the present embodiment, the transport path (transport path, transport path) 20 of the continuous paper 110 is formed by the plurality of heating rollers 11, the guide roller 17, and the heating drum 12. The heating drum 12 also serves as a transporting means for imparting a transporting force to the continuous paper 110. The heating rollers 11A and 11B are driven rollers that are carried around by contacting and transporting the continuous paper 110.

The transport path 20 includes an upstream path Y1 in which the continuous paper 110 is transported in the first direction (Y1 direction) while contacting the two heating rollers 11A and 11B, and a chain whose transport direction is changed by the guide roller 17. It includes a downstream path Y2 in which the book paper 110 is conveyed in the second direction (Y2 direction) while being in contact with the heating drum 12. A part of the upstream route Y1 and the downstream route Y2 face each other. The number of heating rollers 11 (heating members) constituting the upstream path Y1 is appropriately set in the same manner as in the first embodiment described above. Further, a plurality of heating members may be used instead of the heating drum 12 constituting the downstream path Y2.

In the present embodiment, the continuous paper 110 is conveyed in contact with the two heating rollers 11A and 11B in the upstream path Y1. After that, the continuous book paper 110 is conveyed while being in contact with the heating drum 12 in the downstream path Y2 after the transfer direction is changed by the guide roller 17.

As shown in FIG. 8, the air supply / exhaust device 30 which is a part of the ventilation means in the present embodiment is arranged in the space between the heating rollers 11A and 11B of the upstream path Y1 and the heating drum 12 of the downstream path Y2. There is. The air supply / exhaust device 30 blows air toward both the continuous paper 110 that is conveyed while contacting the two heating rollers 11A and 11B and the continuous paper 110 that is conveyed while contacting the heating drum 12. By performing such air blowing (air supply), it is possible to realize drying in a shorter time than when the continuous paper 110 is dried only by heat transfer of the heating roller 11 and the heating drum 12.

Further, the air supply / exhaust device 30 of the present embodiment, as in the first embodiment described above, provides air (gas containing vaporized water, a liquid component such as a solvent, etc.) removed from the vicinity of the continuous book paper 110 by blowing air. It also has a function as a collection means for collection (exhaust). As a result, it is possible to prevent the vaporized water and the solvent from reattaching to the continuous paper 110, and it is possible to improve the drying efficiency.

In the above embodiment, the blowing means and the collecting means are realized by the same air supply / exhaust device 30, but the blowing means and the collecting means may be realized by separate devices.

Further, in the above embodiment, the contact heating means for heating the object to be dried in contact with the heating member is an example, but the object to be dried is heated by radiant heat or the like by using a non-contact heating means such as a heater. There may be.

Further, in the above embodiment, the example in which a plurality of heating members (heating rollers 11) and curved surface heating members (heating drum 12) are rotating bodies is described, but some or all of them may not be rotating bodies. good.

Further, in the above embodiment, a simple roller (rotating body) other than the heating member may be arranged in the middle, which is described in the configuration in which a plurality of heating members (heating rollers 11) are continuously arranged. ..

Further, in the above embodiment, the drying treatment by heat using the heating member (heating roller 11) and the heating drum 12 and the drying treatment by blowing air using the air supply / exhaust device 30 are used in combination. For example, heating is used. A simple roller or drum having no heating function may be used as the member (heating roller 11) or the heating drum 12, and the drying process may be performed by blowing air using the air supply / exhaust device 30.

Further, in the above embodiment, the example in which the member to be conveyed (the object to be dried) is a continuous paper is described, but the present invention is not limited to this, and any member that can be a drying target of the drying device 104 is used. There is no particular limitation. For example, in addition to continuous paper, roll paper, a continuous body such as a web, and a recording medium (printed matter) such as a long sheet material, a member such as a wallpaper or a sheet for an electronic circuit board such as a prepreg may be used.

In addition to recording images such as characters and figures on the object to be dried with a liquid such as ink, the printing device inks images that have no meaning such as patterns for the purpose of decoration and decoration. May be applied with the liquid of.

Further, in the above embodiment, the second direction is described as an example in which the direction is opposite to the first direction, but the direction is not limited to the opposite direction, and the direction having an angle with respect to the first direction is also used. good.

Next, the printing apparatus according to the fourth embodiment of the present invention will be described with reference to FIG.
FIG. 9 is a schematic explanatory view of the printing apparatus.
In this printing apparatus, between the original winding roller 102 and the take-up roller 105, a first printing unit 1001 that prints and dries on one side of the continuous book paper 110 and a continuous printing unit 1001 that prints on one side. An inversion unit 1003 that reverses the front and back of the book paper 110 and a second printing unit 1002 that prints and dries on the other side of the continuous book paper 110 are arranged.

The configurations of the liquid applying unit 101, the transport unit 103, and the drying device 104 of the first printing unit 1001 and the second printing unit 1002 are those of the above-mentioned first embodiment, second embodiment, and third embodiment. It may be used, or another configuration may be used.

Here, the liquid applying unit 101 of the first printing unit 1001 serves as a first liquid applying means for applying liquid to the first surface of the continuous paper 110, which is a member (object to be dried) to be conveyed. The liquid applying unit 101 of the second printing unit 1002 serves as a second liquid applying means for applying the liquid to the second surface opposite to the first surface of the continuous paper 110.

Further, the drying device 104 of the first printing unit 1001 is the first drying device in which the second surface of the continuous paper 110 comes into contact with the heating roller 11 in the first path Y1. The drying device 104 of the second printing unit 1002 is a second drying device in which the first surface of the continuous paper 110 comes into contact with the heating roller 11 in the upstream path Y1.

Next, the treatment liquid application device as the liquid application device according to the fifth embodiment of the present invention will be described with reference to FIG.
FIG. 10 is a schematic explanatory view of the treatment liquid coating device 2000.
The processing liquid coating device 2000 dries the processing liquid application units 2001 and 2002, which are liquid application units that apply the treatment liquid that is a liquid to the continuous book paper 110, and the continuous book paper 110 to which the treatment liquid is applied (applied). It is provided with a drying device 104, which is a drying unit. The processing liquid coating device 2000 may be arranged between the liquid applying portion 101 of the above-mentioned printing device and the main winding roller 102, and may apply the processing liquid to the continuous paper 110 before printing, for example. It may be arranged between the liquid applying portion 101 of the above-mentioned printing apparatus and the take-up roller 105 to apply the processing liquid to the continuous printing paper 110 after printing.

Examples of the treatment liquid include a modifying material that modifies the surface of the continuous paper 110 by applying it to the surface of the continuous paper 110. In terms of composition, the treatment liquid is a cellulose (anionic, cationic, nonionic, or a mixture of two or more of them) that promotes the permeation of water with respect to a surfactant (anionic, cationic, nonionic, or a mixture thereof). A solution containing hydroxypropyl cellulose or the like and a base such as talc fine powder can be used. Further, fine particles may be contained.

In the present embodiment, two treatment liquid application units 2001 and 2002 are provided in order to apply the treatment liquid to both sides of the continuous book paper 110, but one or more treatment liquid application units 2001 and 2002 are provided. You may have it.
As the configuration of the drying device 104, those of the above-mentioned first embodiment, second embodiment and third embodiment may be used, or other configurations may be used.
The treatment liquid coating device 2000 of the present embodiment can be applied to other than the printing device.

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

When a liquid discharge head is used as a liquid applying means, a piezoelectric actuator (laminated piezoelectric element and thin film type piezoelectric element), a thermal actuator using an electric heat conversion element such as a heat generating resistor, and vibration are used as an energy generation source for discharging the liquid. Those using an electrostatic actuator consisting 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.

What has been described above is an example, and has a unique effect in each of the following aspects.
(Aspect A)
A drying device 104 for transporting and drying an object to be dried such as a continuous paper 110, wherein the first path (heating drum transport path Y3, upstream path Y1, etc.) to which the object to be dried is conveyed, and the first path. The transport means for transporting the object to be dried and the air supply / exhaust device 30 or the like for blowing air toward the object to be dried so as to pass through a second path (downstream path Y2 or the like) whose transport direction is different from that of the path. The ventilation means has means, and the ventilation port 31a is arranged at a position where the ventilation port 31a faces both the first path and the second path, and the dried object and the second path passing through the first path are provided. It is characterized by blowing air toward both passing objects to be dried.
According to this aspect, the object to be dried transported by the transport means can be blown twice, once through the first path and once through the second path, by one blower means. As a result, it is possible to blow air to the object to be dried with less air blowing means than in a configuration in which the object to be dried is blown once by each of the two air blowing means. Therefore, efficient drying can be performed even with a small amount of air blowing means.

(Aspect B)
In the aspect A, a plurality of heating members such as heating rollers 11 arranged side by side in the transport direction of the object to be dried are included, and in the first path, the object to be dried covers a heating region a of the plurality of heating members. It is a path (upstream path Y1 or the like) that is conveyed so as to pass through, and the second path is conveyed so that the object to be dried passes through another heating region b in the heating member that is in contact with the first path. It is characterized by being a route (downstream route Y2, etc.).
According to this aspect, the object to be dried transported by the transport means is heated in the heating region of the heating member when passing through the first path, and again in another heating region in the same heating member when passing through the second path. Be heated. As a result, the object to be dried can be heated twice with one heating member, so that the object to be dried can be heated with fewer heating members than with the configuration in which the object to be dried is heated once with each of the two heating members. can. Therefore, according to this aspect, efficient drying can be performed with a small number of heating members.

(Aspect C)
In the aspect A, a curved contact region having a curvature smaller than the curvature of a plurality of heating members arranged side by side in the transport direction of the object to be dried and a contact region of the heating member with the object to be dried is provided. The first path includes a curved surface heating member provided, the first path is a path in which the object to be dried is conveyed along the peripheral surface of the curved surface heating member, and the second path is downstream in the transport direction of the first path. It is a path in which the object to be dried is conveyed so as to pass through a heating region of the plurality of heating members.
According to this, by using the curved surface heating member, the drying process can be performed in a shorter time.

(Aspect D)
In the aspect A, a curved contact region having a curvature smaller than the curvature of a plurality of heating members arranged side by side in the transport direction of the object to be dried and a contact region of the heating member with the object to be dried is provided. The first path includes the curved surface heating member provided, the first path is a path through which the object to be dried is conveyed so as to pass through the heating regions of the plurality of heating members, and the second path is the transfer of the first path. It is a path downstream in the direction in which the object to be dried is conveyed along the peripheral surface of the curved surface heating member.
According to this, by using the curved surface heating member, the drying process can be performed in a shorter time.

(Aspect E)
In the aspect C, the transport means transports the object to be dried so as to pass through the heating region of at least one heating member upstream of the transport direction of the curved surface heating member, and the transport means in the second path. It is characterized in that the dried material is conveyed so as to pass through another heating region in at least one of the heating members in contact with the dried material.
According to this, the drying process can be performed in a shorter time.

(Aspect F)
In the embodiment C or E, the plurality of heating members are arranged side by side in an arc around the curved surface heating member, and the second path is a path on the curved surface heating member side of the plurality of heating members. It is characterized by that.
According to this, the drying device can be miniaturized.

(Aspect G)
In any of the embodiments A to F, the transport means transports a member to which a liquid such as ink is applied as the object to be dried, and the first path and the said by the blow of the blower means. The collection port 32a of the collection means such as the air supply / exhaust device 30 for recovering the gas removed from the vicinity of the object to be dried transported in the second path is arranged at a position facing both the first path and the second path. It is characterized by having done it.
According to this, it is possible to suppress the reattachment of the vaporized liquid component to the object to be dried, and it is possible to improve the drying efficiency.

(Aspect H)
In the aspect G, the recovery means is characterized in that the recovered gas is condensed to recover the liquid component in the gas.
According to this, the gas after removing the liquid component can be discharged to the outside.

(Aspect I)
In any of the embodiments A to H, the temperature of the heater, temperature sensor, control unit, etc. that maintains the temperature of the gas blown by the blowing means above the boiling point of the liquid component contained in the object to be dried is maintained. It is characterized by having means.
According to this, the liquid contained in the object to be dried can be stably vaporized, and uneven drying can be suppressed.

(Aspect J)
A drying device 104 for transporting and drying an object to be dried such as a continuous paper 110, wherein the first path (heating drum transport path Y3, upstream path Y1, etc.) to which the object to be dried is conveyed, and the first path. A transport means for transporting the object to be dried so as to pass through a second path (downstream path Y2, etc.) located at a position facing the path, and an air supply / exhaust device 30 or the like for blowing air toward the object to be dried. The ventilation means has means, and the ventilation port 31a is arranged at a position where the ventilation port 31a faces both the first path and the second path, and the dried object and the second path passing through the first path are provided. It is characterized by blowing air toward both passing objects to be dried.
According to this aspect, the object to be dried transported by the transport means can be blown twice, once through the first path and once through the second path, by one blower means. As a result, it is possible to blow air to the object to be dried with less air blowing means than in a configuration in which the object to be dried is blown once by each of the two air blowing means. Therefore, efficient drying can be performed even with a small amount of air blowing means.

(Aspect K)
It is provided with a liquid applying means such as a liquid applying unit 101 for applying a liquid such as ink to an object to be dried such as continuous book paper 110, and a drying device 104 for drying the object to be dried to which the liquid is applied by the liquid applying means. In a printing device such as an inkjet recording device, the drying device according to any one of the aspects A to J is used as the drying device.
According to this aspect, it is possible to realize a printing apparatus capable of performing efficient drying with a small amount of air blowing means.

(Aspect L)
A liquid application unit such as a treatment liquid application unit 2001 or 2002 that applies a liquid such as a treatment liquid to an object to be dried such as continuous book paper 110, and a drying device 104 that conveys and dries the object to be dried to which the liquid is applied. A liquid applying device such as a treatment liquid coating device 2000 including a drying unit such as, etc., wherein the drying unit is located at a position facing the first path to which the object to be dried is conveyed and the first path. It has a transport means for transporting the object to be dried so as to pass through the two paths, and a blower means for blowing air toward the object to be dried. It is arranged at a position facing both of the second paths, and is characterized by blowing air toward both the dried object passing through the first path and the dried object passing through the second path.
According to this aspect, it is possible to realize a liquid applying device capable of performing efficient drying even with a small amount of blowing means.

10 Heating means 11 Heating roller 12 Heating drum 13 Contact guide roller 17 Guide roller 20 Conveyance path 30 Air supply / exhaust device 31 Blower duct 31a Blower port 32 Recovery duct 32a Recovery port 36 Airflow generator 37 Exhaust device 101 Liquid application unit 104 Drying device 110 Continuous book paper 1001 First printing unit 1002 Second printing unit 1003 Inverting unit

Japanese Unexamined Patent Publication No. 2014-152964

Claims (19)

A drying device that transports and dries the object to be dried.
A transport means for transporting the object to be dried so as to pass through a first path through which the object to be dried is transported and a second path whose transport direction is different from that of the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a sheet material to which liquid ink is applied and is transported as the object to be dried.
The blower means is arranged at a position where the blower port faces both the first path and the second path, and is directed to both the dried object passing through the first path and the dried object passing through the second path. Blow and blow
The collection port of the recovery means for recovering the gas removed from the vicinity of the object to be dried carried through the first path and the second path by the ventilation of the blower means is provided in both the first path and the second path. Place it in the opposite position and
The conveying means is such that the back surface of the ink-applied surface of the sheet material contacts the heating drum in the first path and the back surface of the sheet material contacts the heating roller in the second path. A drying device characterized by transporting materials . A drying device that transports and dries the object to be dried.
A transport means for transporting the object to be dried so as to pass through a first path through which the object to be dried is transported and a second path whose transport direction is different from that of the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a sheet material to which liquid ink is applied and is transported as the object to be dried.
The recovery port of the recovery means for recovering the gas removed from the vicinity of the object to be dried is arranged at a position facing both the first path and the second path.
The conveying means is such that the back surface of the ink-applied surface of the sheet material contacts the heating drum in the first path and the back surface of the sheet material contacts the heating roller in the second path. A drying device characterized by transporting materials . In the drying apparatus according to claim 1 or 2.
Includes a plurality of heating members arranged side by side in the transport direction of the object to be dried.
The first path is a path through which the object to be dried is conveyed so as to pass through the heating regions of the plurality of heating members.
The drying apparatus is characterized in that the second path is a path in which the object to be dried is conveyed so as to pass through another heating region in the heating member in contact with the first path. A drying device that transports and dries the object to be dried.
A transport means for transporting the object to be dried so as to pass through a first path through which the object to be dried is transported and a second path whose transport direction is different from that of the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a member to which a liquid is applied and is transported as the object to be dried.
The blower means is arranged at a position where the blower port faces both the first path and the second path, and is directed to both the dried object passing through the first path and the dried object passing through the second path. Blow and blow
The collection port of the recovery means for recovering the gas removed from the vicinity of the object to be dried carried through the first path and the second path by the ventilation of the blower means is provided in both the first path and the second path. Place it in the opposite position and
Includes a plurality of heating members arranged side by side in the transport direction of the object to be dried.
The first path is a path through which the object to be dried is conveyed so as to pass through the heating regions of the plurality of heating members.
The drying apparatus is characterized in that the second path is a path in which the object to be dried is conveyed so as to pass through another heating region in the heating member in contact with the first path. A drying device that transports and dries the object to be dried.
A transport means for transporting the object to be dried so as to pass through a first path through which the object to be dried is transported and a second path whose transport direction is different from that of the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a member to which a liquid is applied and is transported as the object to be dried.
The recovery port of the recovery means for recovering the gas removed from the vicinity of the object to be dried is arranged at a position facing both the first path and the second path.
Includes a plurality of heating members arranged side by side in the transport direction of the object to be dried.
The first path is a path through which the object to be dried is conveyed so as to pass through the heating regions of the plurality of heating members.
The drying apparatus is characterized in that the second path is a path in which the object to be dried is conveyed so as to pass through another heating region in the heating member in contact with the first path. In the drying apparatus according to claim 1 or 2.
A plurality of heating members arranged side by side in the transport direction of the object to be dried, and a curved surface heating member having a curved contact region having a curvature smaller than the curvature of the contact region of the heating member with the object to be dried. Including
The first path is a path through which the object to be dried is conveyed along the peripheral surface of the curved surface heating member.
The drying apparatus, wherein the second path is downstream in the transport direction of the first path, and the object to be dried is transported so as to pass through a heating region of the plurality of heating members. A drying device that transports and dries the object to be dried.
A transport means for transporting the object to be dried so as to pass through a first path through which the object to be dried is transported and a second path whose transport direction is different from that of the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a member to which a liquid is applied and is transported as the object to be dried.
The blower means is arranged at a position where the blower port faces both the first path and the second path, and is directed to both the dried object passing through the first path and the dried object passing through the second path. Blow and blow
The collection port of the recovery means for recovering the gas removed from the vicinity of the object to be dried carried through the first path and the second path by the ventilation of the blower means is provided in both the first path and the second path. Place it in the opposite position and
A plurality of heating members arranged side by side in the transport direction of the object to be dried, and a curved surface heating member having a curved contact region having a curvature smaller than the curvature of the contact region of the heating member with the object to be dried. Including
The first path is a path through which the object to be dried is conveyed along the peripheral surface of the curved surface heating member.
The drying apparatus, wherein the second path is downstream in the transport direction of the first path, and the object to be dried is transported so as to pass through a heating region of the plurality of heating members. A drying device that transports and dries the object to be dried.
A transport means for transporting the object to be dried so as to pass through a first path through which the object to be dried is transported and a second path whose transport direction is different from that of the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a member to which a liquid is applied and is transported as the object to be dried.
The recovery port of the recovery means for recovering the gas removed from the vicinity of the object to be dried is arranged at a position facing both the first path and the second path.
A plurality of heating members arranged side by side in the transport direction of the object to be dried, and a curved surface heating member having a curved contact region having a curvature smaller than the curvature of the contact region of the heating member with the object to be dried. Including
The first path is a path through which the object to be dried is conveyed along the peripheral surface of the curved surface heating member.
The drying apparatus, wherein the second path is downstream in the transport direction of the first path, and the object to be dried is transported so as to pass through a heating region of the plurality of heating members. In the drying apparatus according to claim 1 or 2.
A plurality of heating members arranged side by side in the transport direction of the object to be dried, and a curved surface heating member having a curved contact region having a curvature smaller than the curvature of the contact region of the heating member with the object to be dried. Including
The first path is a path through which the object to be dried is conveyed so as to pass through the heating regions of the plurality of heating members.
The drying apparatus is characterized in that the second path is downstream in the transport direction of the first path, and the object to be dried is transported along the peripheral surface of the curved surface heating member. A drying device that transports and dries the object to be dried.
A transport means for transporting the object to be dried so as to pass through a first path through which the object to be dried is transported and a second path whose transport direction is different from that of the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a member to which a liquid is applied and is transported as the object to be dried.
The blower means is arranged at a position where the blower port faces both the first path and the second path, and is directed to both the dried object passing through the first path and the dried object passing through the second path. Blow and blow
The collection port of the recovery means for recovering the gas removed from the vicinity of the object to be dried carried through the first path and the second path by the ventilation of the blower means is provided in both the first path and the second path. Place it in the opposite position and
A plurality of heating members arranged side by side in the transport direction of the object to be dried, and a curved surface heating member having a curved contact region having a curvature smaller than the curvature of the contact region of the heating member with the object to be dried. Including
The first path is a path through which the object to be dried is conveyed so as to pass through the heating regions of the plurality of heating members.
The drying apparatus, wherein the second path is downstream in the transport direction of the first path, and the object to be dried is transported along the peripheral surface of the curved surface heating member. A drying device that transports and dries the object to be dried.
A transport means for transporting the object to be dried so as to pass through a first path through which the object to be dried is transported and a second path whose transport direction is different from that of the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a member to which a liquid is applied and is transported as the object to be dried.
The recovery port of the recovery means for recovering the gas removed from the vicinity of the object to be dried is arranged at a position facing both the first path and the second path.
A plurality of heating members arranged side by side in the transport direction of the object to be dried, and a curved surface heating member having a curved contact region having a curvature smaller than the curvature of the contact region of the heating member with the object to be dried. Including
The first path is a path through which the object to be dried is conveyed so as to pass through the heating regions of the plurality of heating members.
The drying apparatus, wherein the second path is downstream in the transport direction of the first path, and the object to be dried is transported along the peripheral surface of the curved surface heating member. In the drying apparatus according to any one of claims 6 to 8 .
The transport means transports the object to be dried so as to pass through the heating region of at least one of the heating members upstream in the transport direction of the curved surface heating member, and the object to be dried comes into contact with the second path. A drying device, characterized in that it is conveyed so as to pass through another heating region in at least one of the heating members. In the drying apparatus according to claim 6, 7, 8 or 12 ,
The plurality of heating members are arranged side by side in an arc around the curved surface heating member.
The drying apparatus, wherein the second path is a path on the curved surface heating member side of the plurality of heating members. In the drying apparatus according to any one of claims 1 to 13 .
The recovery means is a drying device characterized in that the recovered gas is condensed and the liquid component in the gas is recovered. In the drying apparatus according to any one of claims 1 to 14 ,
A drying device comprising a temperature maintaining means for maintaining the temperature of the gas blown by the blowing means at a temperature equal to or higher than the boiling point of the liquid component contained in the object to be dried. A drying device that transports and dries the object to be dried.
A transporting means for transporting the object to be dried so as to pass through a first path to which the object to be dried is transported and a second path at a position facing the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a sheet material to which liquid ink is applied and is transported as the object to be dried.
The blower means is arranged at a position where the blower port faces both the first path and the second path, and is directed to both the dried object passing through the first path and the dried object passing through the second path. Blow and blow
The collection port of the recovery means for recovering the gas removed from the vicinity of the object to be dried carried through the first path and the second path by the ventilation of the blower means is provided in both the first path and the second path. Place it in the opposite position and
The conveying means is such that the back surface of the ink-applied surface of the sheet material contacts the heating drum in the first path and the back surface of the sheet material contacts the heating roller in the second path. A drying device characterized by transporting materials . A drying device that transports and dries the object to be dried.
A transporting means for transporting the object to be dried so as to pass through a first path to which the object to be dried is transported and a second path at a position facing the first path.
It has a blowing means for blowing toward the object to be dried, and has
The transport means transports a sheet material to which liquid ink is applied and is transported as the object to be dried.
The recovery port of the recovery means for recovering the gas removed from the vicinity of the object to be dried is arranged at a position facing both the first path and the second path.
The conveying means is such that the back surface of the ink-applied surface of the sheet material contacts the heating drum in the first path and the back surface of the sheet material contacts the heating roller in the second path. A drying device characterized by transporting materials . A liquid applying means for applying a liquid to the object to be dried,
In a printing apparatus provided with a drying device for drying an object to be dried to which a liquid has been applied by the liquid applying means.
A printing apparatus according to any one of claims 1 to 17, wherein the drying apparatus according to any one of claims 1 to 17 is used as the drying apparatus. A liquid applying device including a liquid applying unit for applying a liquid to an object to be dried and a drying unit for transporting and drying the object to be dried to which the liquid is applied.
The liquid applying device, wherein the drying unit includes the drying device according to any one of claims 1 to 17 .

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