JP2017170883A - Dryer, printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable efficient drying even with a few heat members.SOLUTION: A dryer comprises: multiple heat rollers 11A-11E aligned to contact with a surface of a continuous sheet of paper 110 where a liquid is provided as well as to contact with an opposite surface thereof, to heat the continuous sheet of paper 110. The heat rollers 11A-11E are members each of which has a curved contact surface 11a contacting with the continuous sheet of paper 110. A conveyance passage in which the continuous sheet of paper 110 is conveyed while contacting with the multiple heat rollers 11A-11E comprises: a first passage Y1 where the continuous sheet of paper 110 is conveyed while contacting with the multiple heat rollers 11A-11E; and a second passage Y2 where the continuous sheet of paper is conveyed while contacting again with the multiple heat rollers 11D-11A as contacting in the first passage Y1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a drying apparatus and a printing apparatus.

  2. Description of the Related Art As a printing apparatus that performs printing by applying a liquid to a continuous paper or the like, there is a printer that applies a liquid to a continuous paper or the like and then uses a contact heating means such as a heating roller to dry it.

  For example, a heating roller that conveys a substrate along a conveyance path on the outer circumferential surface by rotating the substrate to which the liquid is applied is wound around the outer circumferential surface and heating the substrate. In some cases, a plurality of guide rollers having a smaller diameter than the heating roller that guides the substrate are arranged (Patent Document 1).

JP 2014-152964 A

  By the way, in order to heat the heating roller in contact with a member to be conveyed such as continuous paper, it is necessary to copy the member to be conveyed to at least a part of the peripheral surface of the heating roller. Therefore, when many heating rollers are arranged, there is a problem that the apparatus becomes large.

  The present invention has been made in view of the above problems, and an object thereof is to enable efficient drying even with a small number of heating members.

In order to solve the above problems, a drying apparatus according to the present invention includes:
An apparatus for drying a member to which liquid is applied and transported,
A plurality of first heating members arranged in the transport direction of the transported member to heat the transported member in contact with the transported member;
The transported member has a transport path that is transported while being in contact with the plurality of first heating members,
The transport path is
A first path in which the member to be conveyed is conveyed while being in contact with the plurality of first heating members;
The transported member includes a second path that is transported while being again in contact with the at least one first heating member that has been in contact with the first path.

  According to the present invention, efficient drying can be performed even with a small number of heating members.

1 is a schematic explanatory diagram of a printing apparatus according to a first embodiment of the present invention. It is expansion explanatory drawing of the drying apparatus in the said 1st Embodiment. It is explanatory drawing with which it uses for description of the contact state to a heating roller. It is expansion explanatory drawing of the drying apparatus in 2nd Embodiment of this invention. It is expansion explanatory drawing of the drying apparatus in 3rd Embodiment of this invention. It is explanatory drawing with which it uses for description of the contact distance and winding angle to a heating roller and a heating drum. It is explanatory drawing with which it uses for description of the relationship between a heating roller diameter and a cock ring. It is expansion explanatory drawing of the drying apparatus in 4th Embodiment of this invention. It is principal part expansion explanatory drawing of the drying apparatus in 5th Embodiment of this invention. It is principal part expansion explanatory drawing of the drying apparatus in 6th Embodiment of this invention. It is a schematic explanatory drawing of the printing apparatus which concerns on 7th Embodiment of this invention.

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

  This printing apparatus is an ink jet recording apparatus, and includes a liquid application unit 101 including a liquid discharge head that is a liquid application unit that discharges and applies ink, which is a liquid of a predetermined color, to the continuous paper 110 that is a conveyed member. have.

  In the liquid application unit 101, for example, full-line heads 111A, 111B, 111C, and 111D for four colors are arranged from the upstream side in the transport direction of the continuous paper 110. Each head 111 applies black K, cyan C, magenta M, and yellow Y liquid to the continuous paper 110, respectively. The type and number of colors are not limited to this.

  The continuous paper 110 is fed out from the original winding 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. Are transported.

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

  Next, the drying apparatus in 1st Embodiment is demonstrated with reference to FIG.2 and FIG.3. FIG. 2 is an enlarged explanatory view of the drying device, and FIG. 3 is an explanatory view for explaining a contact point of the continuous paper with the heating roller.

  The drying device 104 includes contact heating means 10 that heats the continuous paper 110 by contacting the surface of the continuous paper 110 opposite to the surface to which the liquid is applied. In addition, guide rollers 17 </ b> A and 17 </ b> B are provided for guiding the continuous paper 110 that has passed through the contact heating means 10.

  The contact heating means 10 includes heating rollers 11 </ b> A to 11 </ b> E that are a plurality of first heating members having a curved contact surface 11 a that is a circumferential surface that contacts the continuous paper 110. The contact heating means 10 includes contact guide rollers 13A to 13D that are contact guide members that guide the continuous paper 110 so as to contact the contact surfaces 11a of the heating rollers 11D to 11A.

  Here, the plurality of heating rollers 11 </ b> A to 11 </ b> E (hereinafter referred to as “heating roller 11” when not distinguished from each other. The same applies to other members) are arranged in a curved shape. Further, the contact guide roller 13 is disposed between the adjacent heating rollers 11.

  It has a conveyance path (conveyance path, conveyance path) 20 for the continuous paper 110 constituted by the plurality of heating rollers 11 and the contact guide roller 13.

  The transport path 20 is a first path (hereinafter referred to as “first path Y1”) in which the continuous paper 110 is transported in the first direction (Y1 direction) while contacting the plurality of heating rollers 11A to 11E. And a second path (hereinafter referred to as “second path Y2”) that is conveyed in the second direction (Y2 direction) while re-contacting the plurality of heating rollers 11D to 11A that are in contact with each other in the first path. Yes.

  In this embodiment, a path is formed in which two or more heating rollers 11 (first heating members) come into contact with each other when the continuous paper 110 is transported through the second path Y2, but one heating roller 11 ( The path may be in contact with the first heating member. In other words, when the continuous paper 110 is transported through the second path Y2, it is not necessary to transport all the heating rollers 11A to 11E in contact again.

  Here, the continuous paper 110 is conveyed in the first path Y1 while being in contact with the heating rollers 11A to 11E on the outer side (side receiving the tension) of the plurality of heating rollers 11A to 11E arranged in a curved shape. . Thereafter, the direction of the continuous paper 110 is changed in the second path Y2, and the inside of the plurality of heating rollers 11E to 11A (the side on which the loosening occurs) is guided by the contact guide roller 13 to the heating rollers 11D to 11A. It is conveyed while in contact.

  At this time, as shown in FIG. 3, the continuous paper 110 is conveyed through the first path Y <b> 1 and the second path Y <b> 2 while simultaneously contacting two spaced apart locations (a part and b part) of the same heating roller 11. It will be.

  In this way, the members simultaneously conveyed to two different places on the same heating member (heating roller) are brought into contact with each other and heated.

  Thereby, the member conveyed efficiently with few heating members can be dried.

  In the present embodiment, when the first path Y1 is transported, the liquid is not transferred even if the moisture of the ink applied to the continuous paper 110 is evaporated and the liquid application surface of the continuous paper 110 is directly touched. Until dry. Thereby, the contact guide roller 13 can be arranged on the liquid application surface side of the continuous paper 110 in the second path Y2.

  Thereafter, the paper is transported through the second path Y2, and is dried until the liquid on the surface can be prevented from being transferred to the back surface and being peeled off when the continuous paper 110 is taken up by the take-up roller 105.

  Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 4 is an enlarged explanatory view of the drying apparatus in the embodiment.

  In the present embodiment, the configuration of the printing apparatus other than the drying apparatus 104 is the same as that of the first embodiment.

  Further, the drying device 104 has a place where a plurality of (here, two) heating rollers 11 are arranged between the contact guide rollers 13 and 13 in the drying device 104 of the first embodiment.

  Even with such a configuration, it is possible to guide the heating roller 11 and the contact guide roller 13 so that they are brought into contact with the heating roller 11 even when transported in the second direction Y2.

  Then, due to the arrangement of the contact guide roller 13 according to the present embodiment, the portion of the continuous paper 110 being transported through the first path Y1 and the second path between the heating rollers 11 and 11 where the contact guide roller 13 is not disposed. A space 120 is formed between the portions of the continuous paper 110 that is transporting Y2.

  Therefore, for example, a sensor unit for controlling the temperature of the heating roller 11 and a temperature control unit 121 for controlling the temperature can be arranged in the space 120.

  Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is an enlarged explanatory view of the drying apparatus in the embodiment.

  In the present embodiment, the configuration of the printing apparatus other than the drying apparatus 104 is the same as that of the first embodiment.

  The drying device 104 is a heating drum that is a second heating member at a position downstream of the plurality of heating rollers 11 in the first path Y1 and upstream of the plurality of heating rollers 11 in the second path Y2. 12 is arranged. The heating drum 12 has a curved contact surface (circumferential surface) having a smaller curvature than the contact surface of the heating roller 11.

  Here, the heating drum 12 is driven to rotate, and the heating roller 11 is rotated with the continuous paper 110 being conveyed.

  The heating roller 11E, the heating drum 12, and the guide roller 17 constitute a path (conveying path) for winding the continuous paper 110 around the heating drum 12 in an area of 70% or more, preferably 80% or more. Yes. The heating drum 12 and the guide roller 17 change the conveying direction of the continuous paper 110 from the direction of the first path Y1 to the direction of the second path Y2.

  At this time, the contact distance of the continuous paper 110 to the heating drum 12 is longer than the contact distance of the continuous paper 110 to the heating roller 11. The “contact distance” is a distance at which the continuous paper 110 is in contact with the circumferential surface in the direction along the circumferential direction of the heating drum 12 and the heating roller 11 (conveying direction). When the heating member is a curved member having a curved surface as a contact surface, the distance is in contact with the curved surface in a direction along the circumferential direction of the curved surface (conveying direction).

  Here, the contact distance and the winding angle will be described with reference to FIG.

  As shown in FIG. 6, the contact distance L <b> 2 between the contact surface 12 a that is the peripheral surface of the heating drum 12 and the continuous paper 110 is the contact distance between the contact surface 11 a that 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 shown in FIG. 6, the winding angles θ2 and θ1 (collectively referred to as “winding angle θ”) end the contact with the point Ps where the continuous paper 110 starts to contact the contact surfaces 12a and 11a. This means the angle formed by the point Pe to the center O.

  Therefore, when the winding angle θ is increased, the contact distance is increased if the diameter of the rotating body is the same, and the contact distance is increased as the diameter of the rotating body is increased even if the winding angle θ is the same.

  In this embodiment, since 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, in any case, the contact surface 12a of the heating drum 12 and the continuous paper 110 Is longer than the contact distance L1 between the contact surface 11a of the heating roller 11 and the continuous paper 110.

  As described above, even when the winding angle θ is the same, the contact distance increases as the diameter of the rotating body increases. Therefore, even if the heating drum 12 and the heating roller 11 have the same diameter and the winding angle θ2 is made larger than θ1, the contact distance L2 between the contact surface 12a of the heating drum 12 and the continuous paper 110 becomes the contact of the heating roller 11. The contact distance L1 between the surface 11a and the continuous paper 110 is longer.

  As a result, the continuous paper 110 that has been transported through the first path Y <b> 1 and heated by the heating roller 11 can be heated and dried by applying a large amount of heat by the heating drum 12.

  In this case, the continuous paper 110 immediately after the liquid is applied is reduced in cockling by being conveyed through the first path Y1 while being in contact with the heating roller 11, and is wound around the heating drum 12 in this state. Efficient drying can be performed by closely contacting the peripheral surface of the heating drum 12.

  That is, since the strength of the continuous paper 110 is reduced when the time has not passed since the liquid application, the back surface side of the continuous paper 110 has a wide range (long contact distance). It is difficult to adhere to the surface (contact surface).

  Therefore, in the initial state where the applied liquid has not been dried, the contact angle is shortened by reducing the winding angle of the continuous paper 110 around the heating roller 11.

  Here, by increasing the curvature of the heating roller 11, the tension generated when the continuous paper 110 is conveyed changes from the pressing force at the contact portion with the heating roller 11, so the contact state with the heating roller 11 is uniform. Become. In this state, generation of cockling and wrinkles is suppressed or corrected in the continuous paper 110, and when passing through the plurality of heating rollers 11, the heat necessary for drying is uniformly supplied to the liquid on the continuous paper 110. Ready to do.

  In this way, the continuous paper 110 that has been cocked and dried is able to be brought into close contact with the contact surface even if the contact distance with the rotating body (curved surface) is increased.

  Therefore, in the heating drum 12 arranged on the downstream side of the plurality of heating rollers 11, by increasing the contact distance of the continuous paper 110, a large amount of heat is supplied to the continuous paper 110 to efficiently dry in a short time. Can be done.

  Furthermore, in this embodiment, the back surface of the continuous paper 110 is brought into contact with the heating roller 11 again on the downstream side of the heating drum 12.

  Thereby, for example, the moisture of the ink is evaporated by the heat transfer of the heating roller 11 and the heat transfer of the heating drum 12 in the first path Y1, and then the ink is transferred by the heat transfer of the heating roller 11 in the second path Y2. By evaporating the solvent, the ink can be fixed on the paper which is the continuous paper 110.

  Next, an example of the relationship between the roller diameter of the heating roller 11 and the cockling of the continuous paper 110 will be described with reference to FIG.

  FIG. 7 shows the results of changing the diameter of the heating roller 11 to measure the cockling height and cockling pitch generated on the continuous paper 110, and confirming the presence or absence of a cockling that can be visually confirmed.

  From this result, in this example, by setting the diameter of the heating roller 11 to 200 mm, the cockling height is almost halved compared to when the diameter of the heating roller 11 is 250 mm, and the diameter of the heating roller 11 is 100 mm or less. By doing this, you can see that cockling is gone.

  Accordingly, the diameter of the heating roller 11 is preferably 200 mm or less, and more preferably 100 mm or less.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 is an enlarged explanatory view of the drying device in the embodiment.

  In the present embodiment, the configuration of the printing apparatus other than the drying apparatus 104 is the same as that of the first embodiment.

  The drying device 104 is a contact guide that guides the continuous paper 110 to contact the ten heating rollers 11 (11A to 11J), the heating drum 12, and the heating rollers 11 (11A to 11J) that constitute the contact heating means 10. The roller 13 (13A-13J) is provided.

  Further, guide rollers 17 </ b> A to 17 </ b> D for guiding the continuous paper 110 to the contact heating means 10 and a guide roller 17 </ b> E for winding the continuous paper 110 around the heating drum 12 are provided. Furthermore, heating rollers 14A and 14B that also serve as guide rollers for guiding the continuous paper 110 coming out from the contact heating means 10 are provided.

  In the contact heating means 10, ten heating rollers 11 (11 </ b> A to 11 </ b> J) are arranged around the heating drum 12 in an arc shape. 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 coincides with the center of the arc of the heating roller 11 arranged in an arc shape. do not have to.

  Thereby, when it conveys in contact over the some heating roller 11, a load is not applied to the continuous paper 110, and it can convey with appropriate tension | tensile_strength.

  The continuous paper 110 guided to the contact heating means 10 by the guide roller 17D is in contact with the outer sides (opposite to the heating drum 12) of the plurality of heating rollers 11A to 11J arranged in an arc shape. Y1 is conveyed.

  After that, the continuous paper 110 reaches the circumferential surface of the heating drum 12 and is wound around the entire circumference of the heating drum 12 to come into contact therewith, and then again with the guide roller 17E and the contact guide roller 13A, the heating roller 11J. Be guided to. The continuous paper 110 is conveyed along the second path Y2 while being guided and contacted with the inside of the heating rollers 11J to 11A (on the heating drum 12 side) by the contact guide rollers 13A to 13J.

  Thereby, even if the number of heating members is increased, the apparatus can be reduced in size. And a drying rate can be raised by increasing the number of heating members.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 9 is an enlarged explanatory view of a main part of the drying apparatus in the same embodiment.

  In the present embodiment, the contact guide roller 13 disposed between the adjacent heating rollers 11, 11 has a first position shown in FIG. 9B that presses the conveyed continuous paper 110 against the heating roller 11, and the continuous paper. The paper 110 is disposed so as to be movable in the direction of the arrow between the second position shown in FIG. Thereby, the position of the contact guide roller 13 can be changed with respect to the conveyance path outside the group of heating rollers 11.

  In addition, the movement of the contact guide roller 13 can be performed manually by, for example, a handle operation or can be performed by an actuator provided with a drive source.

  Since it comprised in this way, in order to improve workability | operativity at the time of initial loading of the continuous paper 110, the contact guide roller 13 is only the predetermined distance N1 with respect to the conveyance path outside the heating roller 11 group at the time of loading operation. The retreated position can be separated.

  After the continuous paper 110 is loaded, the contact guide roller 13 is moved to a pressing position at a predetermined distance N2 (N2 <N1) with respect to the conveyance path outside the heating roller 11 group, and the continuous paper 110 is moved. Pressing inward from the common circumscribing line of the adjacent heating rollers 11 and 11. Thereby, the contact area | region with respect to the heating roller 11 of the continuous paper 110 can be enlarged.

  Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 10 is an enlarged explanatory view of a main part of the drying apparatus in the same embodiment.

  In the present embodiment, the first heating rollers 11A to 11K and the contact guide rollers 13A to 13H are arranged side by side.

  Here, between the group of the first heating rollers 11A to 11E and the group of the first heating rollers 11G to 11K arranged in a curved shape, a path in which the heating rollers 11E, 11F, and 11G are arranged in a straight line is interposed, respectively. By doing so, a part of the transport path is bent, and the straight path portion is included in the curved path.

  That is, the shape of the conveyance path (conveyance path) is not limited to the curved shape, and may include a straight shape (straight path) in part (this embodiment).

  In the above-described embodiment, an example in which the plurality of first heating members and second heating members are rotating bodies has been described, but some or all of them may not be rotating bodies.

  In each of the above embodiments, the conveyance path is described as an arc-shaped, arc-shaped or curved path. However, the present invention is not limited to this. For example, a route that is bent in the middle of the Y1 direction (or Y2 direction), a crank-like route, or the like may be used.

  Moreover, in each said embodiment, the simple 1st roller (rotating body) other than a heating member may be arrange | positioned in the middle demonstrated by the structure which several 1st heating members are located in a line in a row.

  In each said embodiment, although the member conveyed is demonstrated in the example which is a continuous paper, it is not restricted to this, It will not specifically limit if it is a member conveyed by the drying apparatus which concerns on this invention. For example, in addition to a continuous material such as continuous paper, roll paper, and web, and a recording medium (printed material) such as a long sheet material, a printed material such as a sheet for an electronic circuit board such as wallpaper or prepreg may be used.

  In addition to recording images such as letters and figures with a liquid such as ink, an image having no meaning such as a pattern is printed on a member conveyed by the printing apparatus for the purpose of decoration or decoration. Or a liquid such as

  In each of the above embodiments, the second direction is described as an example opposite to the first direction. However, the second direction is not limited to the opposite direction, and may be a direction having an angle with respect to the first direction. Good.

  Next, a printing apparatus according to a seventh embodiment of the present invention will be described with reference to FIG. FIG. 10 is a schematic explanatory diagram of the printing apparatus.

  This printing apparatus includes a first printing unit 1001 that prints on one side of the continuous paper 110 between the original winding roller 102 and the winding roller 105, and a continuous printing that is printed on one side by the first printing unit 1001. A reversing unit 1003 for reversing the front and back of the booklet 110 and a second printing unit 1002 for printing on the other side of the continuous paper 110 and drying are arranged.

  The configurations of the liquid application unit 101, the transport unit 103, and the drying device 104 of the first printing unit 1001 and the second printing unit 2 are substantially the same as (or may be the same as) the first embodiment, but the second to second units. It can be the same as or substantially the same as in the sixth embodiment.

  Here, the liquid application unit 101 of the first printing unit 1001 serves as a first liquid application unit that applies liquid to the first surface of the continuous paper 110 that is a conveyed member. The liquid application unit 101 of the second printing unit 1002 serves as a second liquid application unit that applies liquid to the second surface opposite to the first surface of the continuous paper 110 that is a conveyed member.

  In addition, the drying device 104 of the first printing unit 1001 is a first drying device in which the first surface of the continuous paper 110 contacts 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 second surface of the continuous paper 110 is in contact with the heating roller 11 in the first path Y1.

  In the present application, the liquid applied to the member to be conveyed is not particularly limited, but it is preferable that the viscosity is 30 mPa · s or less at normal 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.

10 Contact heating means 11A to 11J Heating roller (first heating member)
12 Heating drum (second heating member)
13A to 13J Contact guide roller 17A to 17C Guide roller 101 Liquid application unit 103 Conveying unit 104 Drying device 110 Continuous paper (member to be conveyed)

Claims (13)

An apparatus for drying a member to which liquid is applied and transported,
A plurality of first heating members arranged in the transport direction of the transported member to heat the transported member in contact with the transported member;
The transported member has a transport path that is transported while being in contact with the plurality of first heating members,
The transport path is
A first path in which the member to be conveyed is conveyed while being in contact with the plurality of first heating members;
The drying apparatus comprising: a second path in which the transported member is transported while being again in contact with the at least one first heating member that has been in contact with the first path. The plurality of first heating members are arranged in a curved shape or an arc shape,
The first path is a path outside the plurality of first heating members arranged in the curved shape or the arc shape,
The drying apparatus according to claim 1, wherein the second path is a path inside the plurality of first heating members arranged in a curved shape or an arc shape. 2. A contact guide member for guiding the conveyed member so as to contact the first heating member when the conveyed member is conveyed along the second path. Or the drying apparatus of 2. The drying apparatus according to claim 3, wherein the contact guide member is disposed between the first heating members adjacent to each other. The drying apparatus according to claim 3 or 4, wherein a plurality of the first heating members are disposed between the contact guide members adjacent to each other. 6. The drying apparatus according to claim 3, wherein the contact guide member contacts a surface of the member to be transported to which the liquid is applied. The contact heating member is movable between a first position where the conveyed member is pressed against the first heating member and a second position where the conveyed member is not pressed against the first heating member. A drying apparatus according to any one of claims 3 to 6. The first path has a lower curvature than the contact surface of the first heating member at a position downstream of the plurality of first heating members and a second path at an upstream side of the plurality of first heating members. A second heating member having a curved contact surface is disposed;
The contact distance in the conveyance direction between the second heating member and the conveyed member is longer than the contact distance in the conveyance direction between the first heating member and the conveyed member. 4. The drying apparatus according to any one of 3. The drying apparatus according to claim 8, wherein the plurality of first heating members are arranged in an arc around the second heating member. An outer path of the plurality of first heating members arranged in an arc shape with respect to the second heating member is the first path,
The drying apparatus according to claim 9, wherein an inner path of the plurality of first heating members arranged in an arc shape with respect to the second heating member is the second path. The drying apparatus according to any one of claims 1 to 10, wherein the first heating member is in contact with a surface of the member to be transported opposite to a surface to which a liquid is applied. A liquid applying means for applying a liquid to a member to be conveyed;
A printing apparatus comprising: the drying apparatus according to claim 1. First liquid applying means for applying a liquid to the first surface of the conveyed member;
A first drying device comprising the drying device according to any one of claims 1 to 10, which is disposed on the downstream side in the transport direction of the first liquid application unit;
A second liquid applying means disposed on the downstream side in the transport direction of the first drying device, for applying a liquid to a second surface which is a surface opposite to the first surface of the transported member;
A second drying device configured by the drying device according to any one of claims 1 to 10, which is disposed on the downstream side in the transport direction of the second liquid application unit,
In the first drying device, the second surface of the conveyed member is in contact with the plurality of first heating members in the first path,
The second drying apparatus is a printing apparatus, wherein the first surface of the conveyed member is in contact with the plurality of first heating members in the first path.

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