JP7089663B2 - Recording device and recording system - Google Patents

Description

The present invention relates to a recording device provided with a recording unit that discharges a liquid to a medium to be conveyed for recording, and a recording system including a recording device including the recording unit.

In a recording device provided with a recording unit that ejects (sprays) liquid (ink) onto a medium for recording, as typified by an inkjet printer, if the medium is not sufficiently dried after recording, the following problems will occur. May occur.

For example, the medium may be curled so that the recording surface is on the outside, and the curled medium is likely to be caught in the transport path, which may cause clogging. In addition, the medium containing the liquid component has low rigidity, and is easily caught in the transport path, which may cause clogging.
Further, the medium containing the liquid component has a large frictional resistance on the surface of the medium, particularly on the recording surface. For this reason, when the medium after recording is discharged to the stacker, the medium discharged first with the surface damp is pushed out by friction with the back surface of the medium discharged later, and the alignment becomes poor. It may get worse.
In addition, the liquid that has not dried completely may adhere to the transport portion such as a roller.

In order to avoid these problems, a recording device has been proposed in which a heating unit is provided in the transport path after recording by the recording unit to evaporate the liquid sprayed on the medium (for example, a patent). Document 1). The heating unit described in Patent Document 1 is composed of a pair of rollers heated by a heater. According to the heating unit having such a configuration, the medium can be dried in a short time.

Japanese Unexamined Patent Publication No. 2012-210758

Here, since drying of the medium by the heating unit requires a relatively large amount of power consumption, the running cost of the recording device increases when the drying is performed by the drying unit.
In recent years, awareness of environmental protection has been increasing, and it is desired to further reduce power consumption from such a viewpoint.
Therefore, the present invention has been made in view of such a situation, and an object thereof is a recording device in which both efficient drying of the medium after recording and suppression of power consumption are taken into consideration, and the above-mentioned recording. The purpose is to provide a recording system equipped with a device.

In order to solve the above problems, the recording apparatus according to the first aspect of the present invention has a recording unit that discharges a liquid into a medium for recording, and a recording unit that contacts the medium and dries the medium after recording by heating. The drying unit is provided with a drying unit for controlling the drying unit and a control unit for controlling the operation of the drying unit, and the control unit controls the drying unit according to the conditions for drying the medium by the drying unit. It is characterized by.

According to this aspect, since the control unit controls the drying unit according to the conditions for drying the medium by the drying unit, wasteful power consumption can be suppressed.
For example, if the conditions for drying the medium are suitable for drying the medium, the drying time by the drying portion is shortened, the heating temperature for drying is lowered, or the drying is performed. The power consumption in the dried portion can be suppressed by not heating the dried portion.
In addition, in this specification, "suppression of power consumption" includes the case where power is not consumed.

A second aspect of the present invention is characterized in that, in the first aspect, the control unit uses a plurality of conditions as conditions for attempting the drying and controls the drying unit based on the plurality of conditions. And.
According to this aspect, the control unit uses a plurality of conditions as the conditions for attempting the drying, and controls the drying unit based on the plurality of conditions, so that the drying unit can be controlled more appropriately. As a result, the power consumption in the dried portion can be further reduced.

A third aspect of the present invention is the second aspect, wherein the plurality of conditions are the discharge amount of the liquid, the type of the medium, the size of the medium, the temperature in the installation environment of the apparatus, and the installation. At least these of the humidity in the environment, the margin amount of the tip region of the medium, whether the nearest recording surface of the medium is the back surface of the surface on which recording has already been performed, and the transport speed of the medium. It is characterized by including two.
According to this aspect, the dried portion can be controlled more appropriately based on at least two of the plurality of conditions, and the power consumption in the dried portion can be further reduced.

A fourth aspect of the present invention is, in the first aspect, when the control unit uses the discharge amount of the liquid as a condition for attempting the drying, and the discharge amount of the liquid is equal to or less than a predetermined threshold value. The dried portion is set to the first state, and when the discharge amount of the liquid exceeds the threshold value, the dried portion is set to the second state in which the dried portion is heated more than the first state. ..

According to this aspect, the control unit uses the discharge amount of the liquid as a condition for attempting the drying, and when the discharge amount of the liquid is equal to or less than a predetermined threshold value, the drying unit is in the first state. When the discharge amount of the liquid exceeds the threshold value, the dried portion is brought into the second state of heating more than the first state, so that the medium is surely dried in the second state. In the first state, power consumption can be suppressed and running cost can be suppressed.

A fifth aspect of the present invention is, in the fourth aspect, the drying portion is configured to include a roller pair that sandwiches the medium between the first roller and the second roller, and the first roller and the second roller. It is characterized in that at least one of the rollers is heated.
According to this aspect, the drying portion is configured to include a roller pair that sandwiches the medium between the first roller and the second roller, and at least one of the first roller and the second roller is heated. In this configuration, the effects of the fourth aspect described above can be obtained.

A sixth aspect of the present invention is characterized in that, in the fifth aspect, both the first roller and the second roller are heated.
According to this aspect, since both the first roller and the second roller are heated, the medium can be dried more reliably.

A seventh aspect of the present invention is, in the fifth or sixth aspect, the roller pair has a sandwiching state in which the medium can be sandwiched between the first roller and the second roller, and the first roller. It is characterized in that it can be switched between a separated state in which the second roller is separated from the second roller.

According to this aspect, the roller pair is in a holding state in which the medium can be held between the first roller and the second roller, and a separated state in which the first roller and the second roller are separated from each other. Since it is configured to be switchable between the two, for example, when there is a high possibility that the liquid on the recording surface adheres to the roller pair (when the roller pair is being heated, etc.), the liquid on the recording surface can be set to the separated state. Can reduce the degree of adhesion to the roller pair.

In the eighth aspect of the present invention, in the seventh aspect, the control unit sets the first state of the drying unit into a non-heating state in which the roller pair is not heated and in a separated state, and the drying unit is performed. The second state of the portion is characterized in that the roller pair is heated and the sandwiched state is set.

When the first state of the dried portion is a non-heated state in which the roller pair is not heated, the medium immediately after recording in a state where the temperature of the roller pair is low comes into contact with the roller pair. The liquid on the recording surface may adhere to the roller pair.
However, according to this aspect, when the control unit puts the roller pair in the unheated state without heating, the roller pair is put in the separated state, so that the roller is put in the non-heated state and the temperature is lowered. On the other hand, it is possible to suppress the possibility that the liquid on the recording surface adheres.

A ninth aspect of the present invention is, in the seventh aspect, the control unit puts the roller pair in the separated state when the roller pair has not reached the target heating state, and the roller pair sets the target heating state. When the state is reached, the roller pair is brought into the holding state.

For example, if the target heating state is a state in which the roller pair as the drying portion reaches a temperature suitable for drying the medium, the medium is placed on the roller pair in a state where the target heating state has not been reached. Upon contact, the liquid on the recording surface may adhere to the roller pair.
According to this aspect, the control unit puts the roller pair in the separated state when the roller pair has not reached the target heating state, and when the roller pair reaches the target heating state, the control unit sets the roller pair in the separated state. Since the roller pair is placed in the sandwiched state, it is possible to prevent the medium from coming into contact with the roller pair in a state where the roller pair has not reached the target heating state, and to prevent the liquid on the recording surface from adhering to the roller pair. can.

A tenth aspect of the present invention is, in any one of the seventh to ninth aspects, in the pinched state of the roller pair, both the first roller and the second roller advance into the medium transport path, and the said. It is characterized in that both the first roller and the second roller are retracted from the medium transport path in the separated state of the roller pair.

According to this aspect, in the separated state of the roller pair, both the first roller and the second roller are retracted from the medium transport path, so that the liquid on the recording surface is more reliably in the separated state. Can be reduced from sticking to the roller pair.

In the eleventh aspect of the present invention, in any one of the seventh to tenth aspects, the first roller is provided on the side of the nearest recording surface of the medium and can be moved back and forth with respect to the medium transport path. In the separated state, the spur is separated from the medium transport path, and a spur capable of advancing and retreating with respect to the medium transport path is provided on the side of the nearest recording surface of the medium. It is characterized in that it advances into the medium transport path and sandwiches the medium with the second roller in a state of being separated from the second roller.

According to this aspect, in the separated state of the roller pair, a spur capable of sandwiching the medium with the second roller advances into the medium transport path and sandwiches the medium in place of the first roller. Therefore, the medium can be conveyed by the second roller and the spur even in the separated state of the roller pair.

A twelfth aspect of the present invention comprises, in any one of the first to eleventh aspects, a plurality of downstream transport paths branching at a branch located downstream of the recording unit, wherein the drying unit is the said. It is characterized in that it is provided in the medium transport path between the recording unit and the branch unit.

According to this aspect, since the drying section is provided in the medium transport path between the recording section and the branch section, after recording by one drying section in a configuration including a plurality of downstream transport paths. The medium can be dried, and the size of the device can be suppressed and the cost can be suppressed.

A thirteenth aspect of the present invention includes, in any one of the first to eleventh aspects, a plurality of downstream transport paths branching at a branch portion located on the downstream side of the recording unit, and the drying unit has a plurality of. It is characterized in that it is provided in each of the downstream side transport paths of the above and is individually controlled by the control unit.

According to this aspect, a plurality of downstream side transport paths branching at a branch portion located on the downstream side of the recording unit are provided, and the drying unit is provided in each of the plurality of downstream side transport paths, and the control unit is provided. The medium can be dried under conditions suitable for each downstream transport path, the medium can be appropriately dried, and power consumption can be suppressed.

The recording system according to the fourteenth aspect of the present invention is provided adjacent to a recording unit having a recording unit for discharging a liquid to a medium for recording, and accepts the medium from the recording unit. The adjacent unit to be conveyed, a drying unit for contacting the medium and drying the medium after recording by heating, and a control unit for controlling the operation of the drying unit are provided, and the control unit is the drying unit. It is characterized in that the dried portion is controlled according to the conditions for drying the medium.

According to this aspect, since the control unit controls the drying unit according to the conditions for drying the medium by the drying unit, wasteful power consumption can be suppressed.
For example, if the conditions for drying the medium are suitable for drying the medium, the drying time by the drying portion is shortened, the heating temperature for drying is lowered, or the drying is performed. The power consumption in the dried portion can be suppressed by not heating the dried portion.

The schematic diagram of the recording system which concerns on this invention. Side sectional view of a part of the recording unit and the relay unit. The figure explaining the transport path at the time of double-sided recording. The figure explaining the structure of a heat roller pair. The flowchart which shows the flow when the control part controls the operation of a heat roller pair according to the paper transfer destination after recording. The figure which shows the classification according to the relationship between temperature and humidity in a dry environment. The flowchart which shows the flow when the control part controls the operation of a heat roller pair using a plurality of conditions as the condition when the paper is dried by a heat roller pair. The schematic diagram which shows the recording system which concerns on 2nd Embodiment. The schematic diagram which shows the recording system which concerns on 3rd Embodiment. The schematic diagram which shows the transport path of a relay unit route. The schematic diagram which shows the 1st path in the relay unit path. The schematic diagram which shows the 2nd path in the relay unit path.

[First Embodiment]
Hereinafter, an example of the embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram of a recording system according to the present invention. FIG. 2 is a side sectional view of a part of the recording unit and the relay unit. FIG. 3 is a diagram illustrating a transport path during double-sided recording. FIG. 4 is a diagram illustrating a configuration of a heat roller pair. FIG. 5 is a flowchart showing a flow when the control unit controls the operation of the heat roller pair according to the destination of the paper after recording. FIG. 6 is a diagram showing classification according to the relationship between temperature and humidity in a dry environment. FIG. 7 is a flowchart showing a flow when the control unit controls the operation of the heat roller pair by using a plurality of conditions as a condition for drying the paper by the heat roller pair.

Further, in the XYZ coordinate system shown in each figure, the X-axis direction is the width direction of the medium and indicates the depth direction of the device, and the Y-axis direction is the transport direction of the medium in the transport path in the device and the device width. The direction is shown, and the Z-axis direction indicates the device height direction.

■■■ Overview of recording system ■■■
The recording system 1 shown in FIG. 1 includes a recording unit 2 as a "recording device" for recording on paper as a "medium", a relay unit 3, and a post-processing unit 4. As an example, the recording system 1 includes a recording unit 2, a relay unit 3, and a post-processing unit 4 in order from the right side to the left side of FIG. Then, these devices are connected to each other so that the medium can be conveyed from the recording unit 2 to the post-processing unit 4. In the present embodiment, the relay unit 3 is an "adjacent unit" provided adjacent to the recording unit 2 (recording device).
The recording system 1 inputs processing (setting conditions for recording operation, execution instructions, etc.) to the media in the recording unit 2, the relay unit 3, and the post-processing unit 4 from the operation panel (not shown) provided in the recording unit 2. It is configured to be able to.
Hereinafter, a schematic configuration of each of the recording unit 2, the relay unit 3, and the post-processing unit 4 will be described mainly with reference to FIG. 1.

<<< Recording unit >>
The recording unit 2 (recording device) shown in FIG. 1 includes a printer unit 5 having a line head 10 as a "recording unit" for ejecting ink as an example of a "liquid" onto paper and recording, and a scanner unit 6. It is configured as a multifunction device equipped with. In the present embodiment, the ink is a water-based ink such as a water-based ink, and the printer unit 5 is a so-called inkjet printer.
The recording unit 2 is configured to enable double-sided recording in which the paper is inverted and recorded on the second surface (also referred to as the back surface) after recording on the first surface (also referred to as the front surface) of the paper. ..

A plurality of paper storage cassettes 7 are provided at the lower part of the recording unit 2. The paper stored in the paper storage cassette 7 is sent toward the line head 10, and a recording operation is performed. The paper after recording by the line head 10 is configured to be ejected to either the first ejection unit 8 provided in the recording unit 2 or the second ejection unit 40 provided in the post-processing unit 4.
When the paper after recording is ejected from the second ejection unit 40, the paper is sent from the delivery unit 28 to the relay unit 3 and further from the relay unit 3 toward the post-processing unit 4. The medium after performing post-treatment such as cutting and stapling in the post-treatment unit 4 is discharged to the second discharge unit 40.
The paper transport path in the printer unit 5 will be described in detail later.

<<< Relay unit >>>
The relay unit 3 (adjacent unit) shown in FIG. 1 is arranged between the recording unit 2 and the post-processing unit 4, and the paper delivered from the delivery unit 28 is received by the upstream relay unit 34 by the line head 10. The paper after recording is configured to be conveyed from the recording unit 2 to the post-processing unit 4.
The paper conveyed inside the relay unit 3 is sent from the downstream relay unit 35 provided in the relay unit 3 to the post-processing unit 4 via the receiving unit 41 of the post-processing unit 4.
The details of the paper transport path (relay unit path 32) in the relay unit 3 will be described after the description of the present embodiment (first embodiment) and the second embodiment described later.

<<< Post-processing unit >>>
Further, the post-processing unit 4 shown in FIG. 1 is configured to perform post-processing on the paper recorded in the recording unit 2. Examples of post-treatment include cutting, folding paper, punching holes, staples, and sorting.
The details of the paper transport path (post-processing unit path 33) in the post-processing unit 4 will be described later together with the relay unit path 32 in the printer unit 5.

■■■ About the media transfer route of the recording unit ■■■
Next, the paper transport path in the recording unit 2 will be described with reference to FIG.
In FIG. 2, the dotted line indicated by reference numeral T indicates a part of the paper transport path from the paper storage cassette 7. The paper transport path T includes a feed path 14 for feeding the paper picked up from the paper storage cassette 7, and a straight path 12 connected to the feed path 14 and including a recording area by the line head 10. There is.

Further, on the downstream side of the straight path 12, a first downstream transport path 13 (indicated by a two-dot chain line in FIG. 2) for feeding paper to the first discharge section 8 and a delivery section 28 are passed through and shown in FIG. A recording unit path 31 (indicated by a alternate long and short dash line in FIG. 2) constituting a second downstream transport path 30 which is a path leading to the second discharge unit 40 of the post-processing unit 4 is provided.
The first downstream transport path 13 and the second downstream transport path 30 are both paper transport routes after recording. In other words, it is a plurality of downstream transfer paths that branch at the branch portion G1 located on the downstream side of the line head 10. The first downstream transfer path 13 is a path connected to the first ejection unit 8 for ejecting the recorded paper without delivering it to the relay unit 3. That is, it is a route from the downstream side of the line head 10 to the first discharge portion 8. The second downstream transfer path 30 is a path connected to the second ejection section 40 in which the recorded paper is conveyed after being conveyed through the relay unit path 32, which is the medium transfer path of the relay unit 3. That is, it is a route from the downstream side of the line head 10 to the second discharge portion 40.
In the present embodiment, the second downstream transport route 30 is a route having a longer configuration than the first downstream transport route 13.

The medium transport path between the line head 10 and the branch portion G1 is provided with a heat roller pair 11 as a "drying portion" that contacts the transported paper and dries the paper after recording by heating. ing. The detailed configuration of the heat roller pair 11 will be described after the description of the paper transport path in the recording unit 2.
In the present embodiment, the heat roller pair 11 is provided immediately downstream of the belt transport means 20 described later.

The branch portion G1 in which the straight path 12 branches into the first downstream transfer path 13 and the recording unit path 31 constituting the second downstream transfer path 30, is used to transfer the paper after recording to the branch portion G1. A switching section 26 such as a guide flap for switching between the second downstream transport path 30 connected to the delivery section 28 and the first downstream transport path 13 connected to the first discharge section 8 is provided. In other words, the switching unit 26 is configured to switch between feeding the paper to the first downstream transport path 13 and the second downstream transport path 30 (recording unit path 31). The operation of the switching unit 26 is controlled by the control unit 27. The control unit 27 controls operations related to recording, including paper transfer in the recording unit 2, operation of the switching unit 26, and operation of the heat roller pair 11 (drying unit).
The present invention is characterized in controlling the operation of the heat roller pair 11 by the control unit 27. The control of the operation of the heat roller pair 11 performed by the control unit 27 will also be described after the description of the medium transfer path in the recording unit 2.
Hereinafter, the medium transfer path in the recording unit 2, that is, the transfer of paper from the paper storage cassette 7 to the first ejection unit 8, and the transfer of paper for double-sided recording will be described.

<<< About the paper transport route from the paper storage cassette to the first ejection section >>>
The feed path 14 shown in FIG. 2 is provided with a feed roller 17 in order along the medium transport direction, and a separation roller pair 18 for separating a plurality of sheets into one sheet.
The feeding roller 17 is configured to be rotationally driven by a drive source (not shown). Further, the separation roller pair 18 is also called a retard roller, and includes a drive roller 18a for feeding the paper toward the straight path 12 described later, and a driven roller 18b for niping and separating the paper between the drive rollers 18a. It is composed of.

A plurality of sheets of paper can be stored in the paper storage cassette 7, and the highest-level paper is picked up by the feeding roller 17 and transported to the downstream side in the transport direction. At this time, the next-ranked paper may be conveyed together with the top-ranked paper, but the top-ranked paper and the next-ranked paper are separated by the separation roller pair 18, and only the top-ranked paper is fed. It is sent to the route 14.

A resist roller pair 19 is provided on the downstream side of the separation roller pair 18 in the transport direction. In this embodiment, the feeding path 14 and the straight path 12 are connected at the position of the resist roller pair 19.
The straight path 12 is configured as a path extending substantially linearly, and a belt transport means 20, a static elimination unit 25, and a line head 10 are provided on the downstream side of the resist roller pair 19.
In the present embodiment, the belt transport means 20 is arranged in a region facing the head surface of the line head 10, and supports the side opposite to the recording surface of the paper.

The line head 10 is configured to inject ink (liquid) onto the recording surface of the paper to execute recording when the paper is conveyed to a position facing the line head 10 on the belt conveying means 20. The line head 10 is a recording head provided so that a nozzle for ejecting ink covers the entire width of the paper, and is configured as a recording head capable of recording the entire width of the medium without moving in the width direction of the medium. ing.
Although the recording unit 2 of this embodiment includes a line head 10, it is a serial type recording head mounted on a carriage and ejecting a liquid onto a medium while reciprocating in a direction intersecting the medium transport direction for recording. May be provided.

The paper conveyed on the straight path 12 is subsequently sent to the first downstream transfer path 13. At this time, the flap-shaped switching portion 26 swings so as to block the recording unit path 31 (second downstream transfer path 30), and guides the paper to the first downstream transfer path 13.
The paper that has entered the first downstream transfer path 13 is conveyed by the transfer roller pairs 21, 22 and the transfer roller pair group 23, is discharged from the first discharge unit 8, and is placed on the medium with the recording surface facing down. It is placed on the placement part 9.

<<< Transport route for double-sided recording >>>
The recording unit 2 shown in FIG. 2 is configured to be capable of performing double-sided recording, and is on the downstream side of the line head 10 and on the upstream side of the first downstream side transport path 13 (in the present embodiment, in FIG. 2). It is connected to the double-sided recording switchback path 15 branching from the straight path 12 on the upstream side of the transport roller pair 21) and the double-sided recording switchback path 15 and reverses the front and back sides (first side and second side) of the paper. It is provided with an inversion path 16 for returning to the straight path 12. Guide flaps 36 and 37 are provided at the connection portion between the straight path 12 and the switchback path 15 for double-sided recording, and the connection portion between the switchback path 15 for double-sided recording and the reverse path 16, respectively, and these are switched. The route through which the paper is sent can be switched. The operation of the guide flaps 36 and 37 is also controlled by the control unit 27. Further, the control unit 27 also controls the transfer timing performed by driving the belt transfer means 20 and various transfer roller pairs.

In the present embodiment, the double-sided recording switchback path 15 is also a paper transfer path after recording, and is one of a plurality of downstream transfer paths branched on the downstream side of the line head 10. The branch portion of the switchback path 15 for double-sided recording is referred to as a branch portion G2. It can be said that the heat roller pair 11 is provided between the line head 10 and the branch portion G2. In the following, the double-sided recording switchback path 15 may be referred to as a third downstream transfer path.

With reference to FIGS. 2 and 3, paper transport for double-sided recording will be described.
The uppermost figure of FIG. 3 shows a state in which recording is performed on the first surface of the paper by the line head 10. After recording on the first surface, as shown in the second figure from the top of FIG. 3, the paper (indicated by reference numeral P in each figure of FIG. 3) has a straight path 12 to a switchback path 15 for double-sided recording (FIG. 2). See also).

Subsequently, the paper P is fed from the double-sided recording switchback path 15 to the double-sided recording switchback path 15 by the transport roller pair 24 (FIG. 2) in the direction opposite to the direction (+ Y-axis direction) (−Y axis). It is sent in the direction) and enters the inversion path 16, the recording surface is inverted, enters the straight path 12 again, and recording is performed on the second surface by the line head 10 (second figure from the bottom of FIG. 3). .. In FIG. 2, reference numeral 29 is a transport roller pair provided in the inversion path 16.
The paper P on which recording has been performed on both sides enters the first downstream transport path 13 from the straight path 12, is discharged from the first discharge section 8, and is placed on the medium mounting section 9 (FIG. 2). (The bottom figure in FIG. 3).

■■■ About the configuration of the heat roller pair ■■■
Hereinafter, the configuration of the heat roller pair as the "drying portion" will be described.
As shown in FIG. 2, the heat roller pair 11 is a roller pair that sandwiches paper between a drive roller 11a as a "second roller" and a driven roller 11b as a "first roller".
In the present embodiment, both the driving roller 11a and the driven roller 11b are configured to be heated.
The heat roller pair 11 may be configured such that at least one of the drive roller 11a and the driven roller 11b constituting the heat roller pair 11 is heated. That is,
Either the driving roller 11a or the driven roller 11b can be heated. If both the driving roller 11a and the driven roller 11b are heated, both sides of the paper can be heated to realize more reliable drying of the paper.

For heating the drive roller 11a and the driven roller 11b, as an example, an induction heat generation method in which an induction coil (not shown) is provided inside the roller and the roller is heated by the action of a magnetic field generated by passing an electric current through the induction coil can be used. can.
The heating temperature of the driving roller 11a and the driven roller 11b can be adjusted by turning the heating on and off. Further, for example, it can be adjusted by controlling the duty ratio of the current.
Each of the driving roller 11a and the driven roller 11b is provided with a temperature detecting unit (not shown) for detecting the roller temperature.
Further, the heating of the driving roller 11a and the driven roller 11b can be individually and controllably configured.

As shown in the left figure of FIG. 4, the heat roller pair 11 has a holding state in which the paper can be held between the driving roller 11a and the driven roller 11b, and as shown in the middle figure of FIG. 4 and the right figure of FIG. It is configured to be switchable between a separated state in which the driving roller 11a and the driven roller 11b are separated from each other. This makes it possible to reduce the degree to which the ink on the recording surface adheres to the heat roller pair 11.
In the following, among the separated states, the state shown in the middle of FIG. 4 is referred to as a first separated state, and the state shown on the right side of FIG. 4 is referred to as a second separated state.

More specifically, in the sandwiched state of the heat roller pair 11 (left figure in FIG. 4), both the drive roller 11a and the driven roller 11b are medium transfer paths (paths in which the paper P is located in each figure of FIG. 4). It is configured to advance to.

Further, in the first separated state of the heat roller pair 11 (middle figure of FIG. 4), both the driving roller 11a and the driven roller 11b are configured to retract from the medium transport path. Hereinafter, an example of a configuration in which the drive roller 11a and the driven roller 11b are retracted from the medium transport path will be described.
The drive roller 11a is configured to be able to move forward and backward in the Z-axis direction. More specifically, as shown in FIG. 4, the drive roller 11a is held by the holder 85, and when the holder 85 is pressed by the pressing member 86, the drive roller 11a is pressed toward the medium transport path side. Has been done.
The drive roller 11a is configured to be displaceable so as to move forward and backward in the Z-axis direction together with the holder 85, and by rotating an eccentric cam 87 that rotates by receiving power from a drive source (not shown) controlled by the control unit 27. , A pinched state in which the drive roller 11a advances into the medium transport path and comes into contact with the driven roller 11b (left figure in FIG. 4), and a separated state in which the drive roller 11a retracts from the medium transport path and separates from the driven roller 11b (FIG. 4). (Middle figure of 4) and can be switched.

Further, as shown in each figure of FIG. 4, the driven roller 11b is rotatably held by the first holding portion 81, and the first holding portion 81 swings around the shaft portion 83 as an axis. It is configured to move forward and backward with respect to the medium transport path.
In this way, by taking the first separated state in which both the driving roller 11a and the driven roller 11b are retracted from the medium transport path, for example, when the paper P comes into contact with the paper P in a state where the heating of each roller is not sufficient, it is more reliable. It is possible to reduce the possibility that the ink on the recording surface adheres to the heat roller pair 11.

Further, in the present embodiment, a “spur” capable of advancing and retreating with respect to the medium transport path on the same side as the driven roller 11b (first roller), that is, on the side of the recording surface closest to the paper (upper in the present embodiment). In the second separated state in which the driven roller 11b is separated from the medium transport path, the serrated roller 84 is in a state of advancing into the medium transport path and is in contact with the drive roller 11a (second roller). It is configured to hold the paper between them.
The jagged roller 84 is rotatably held by the second holding portion 82, and swings following the swing of the driven roller 11b with the same shaft portion 83 as the first holding portion 81 holding the driven roller 11b as an axis. It is configured to do.
In the second separated state, the drive roller 11a is in a state of advancing with respect to the medium transport path.

As a result, the paper can be conveyed by the drive roller 11a and the serrated roller 84 even when the drive roller 11a and the driven roller 11b are separated from each other (second separated state). Further, since it is a jagged roller, it is possible to suppress the transfer of ink on the recording surface. It should be noted that such a jagged roller 84 can be omitted.

■■■ Control of heat roller operation by the control unit ■■■
The control unit 27 can control the heat roller pair 11 according to the conditions for drying the paper by the heat roller pair 11.
As conditions for drying the paper with the heat roller pair 11, for example, the type of paper, the paper size, the amount of ink ejected, the margin amount, the paper transport speed, and the recording surface of the latest paper have already been recorded. Whether or not it is the back surface of the surface, the recording environment (temperature, humidity), and the like can be mentioned. In addition to the material, the type of paper shall include the type due to differences in thickness, basis weight (weight per unit area), etc.

The control unit 27 controls the heat roller pair 11 according to the conditions for drying the paper by the heat roller pair 11, so that wasteful power consumption can be suppressed.
For example, if the conditions for drying the paper are suitable for drying the paper, the drying time by the heat roller pair 11 is shortened, the heating temperature for drying is lowered, or the drying is performed. By not performing heating or the like, the power consumption of the heat roller pair 11 can be suppressed.
The control of the operation of the heat roller pair 11 will be described by giving a specific example of the conditions for drying the paper by the heat roller pair 11.

◆◆ Control by conditions when drying paper with a pair of heat rollers ◆◆
<< Control according to paper type >>
The paper used in the recording unit 2 of the recording system 1 includes so-called plain paper, coated paper coated with a coating agent on the surface, postcards, envelopes, and the like.
The control unit 27 can control the operation of the heat roller pair 11 according to these paper types.
Table 1 shows an example of operation control of the heat roller pair 11 according to the paper type.

The control unit 27 sets the heat roller pair 11 in the first state when the paper type is coated paper, a postcard, or an envelope, and sets the heat roller pair 11 in the first state when the paper type is plain paper. A second state of heating rather than.
If the recorded paper is plain paper, it is dried by the heat roller pair 11 in the second state, which is heated more. On the other hand, since the coated paper has a coating agent coated on the surface, there is a risk of damaging the coating agent when heated. Therefore, drying is performed with the heat roller pair 11 in the first state in which heating is suppressed more than in the second state.
In addition, postcards that are thicker than plain paper and envelopes that have double-layered paper are less likely to curl or become less rigid due to the ejected ink, so the heat in the first state Dry with a pair of rollers 11.
In the first state, when the heating of the heat roller pair 11 is suppressed, the heating may be turned off, that is, the heating may not be performed.
As described above, since the first state (including the case where heating is off) and the second state of the heat roller pair 11 are switched according to the paper type, it is possible to suppress the power consumption of the heat roller pair 11. can.

Further, in the above, the control for switching the heating state of the heat roller pair 11 is taken as an example, but it is also possible to perform the control for shortening the heating time by the heat roller pair 11. Hereinafter, when the other conditions for drying the paper by the heat roller pair 11 are described, basically, the operation control of the heat roller pair 11 is to switch between the first state and the second state. As an example, it is also possible to control the heating time.
The configuration for switching between the first state and the second state of the heat roller pair 11 will be described in detail later.

<< Control according to paper basis weight >>
For example, even if the paper type (paper quality) is the same, the paper basis weight (g / m ² ) may be different.
The control unit 27 can control the operation of the heat roller pair 11 according to the paper basis weight.
Table 2 shows an example of operation control of the heat roller pair 11 according to the paper basis weight.

Paper with a large basis weight and thickness is less likely to curl due to ink absorption than paper with a small basis weight and thinness. Therefore, as an example, when the paper basis weight is less than 100 g / m ² , drying is performed by the heat roller pair 11 in the second state, which is heated from the first state. Further, when the paper basis weight is 100 g / m ² or more, drying is performed by the heat roller pair 11 in the first state in which heating is suppressed.
As described above, since the first state and the second state of the heat roller pair 11 are switched according to the paper basis weight, the power consumption of the heat roller pair 11 can be suppressed.
The conditions for a paper basis weight of less than 100 g / m ² are further subdivided (for example, less than 60 g / m ² , 60 g / m ² or more and less than 80 g / m ² , 80 g / m ² or more and less than 100 g / m ² , etc.). As the basis weight becomes smaller, the heating temperature can be gradually lowered or the heating time can be gradually shortened.

<< Control according to paper size >>
The control unit 27 can control the operation of the heat roller pair 11 according to the paper size.
Table 3 shows an example of operation control of the heat roller pair 11 according to the paper size.

Generally, when the paper size is small, such as postcard size, the paper is thick, so there is little risk that the paper will curl or become less rigid due to the ejected ink. Therefore, the heat roller in the first state. Dry on a pair of 11.
As described above, since the first state and the second state of the heat roller pair 11 are switched according to the paper size, the power consumption of the heat roller pair 11 can be suppressed.

<< Control according to the amount of ink ejected >>
The control unit 27 can control the operation of the heat roller pair 11 according to the amount of ink ejected to the paper W (ml / m ² ).
Table 4 shows an example of operation control of the heat roller pair 11 according to the amount of ink ejected to the paper W.

If the amount of ink ejected to the paper W is large, the paper is likely to curl and the rigidity of the paper is low, so that the ink is easily caught in the medium transport path. In addition, the ink on the recording surface easily adheres to various rollers and the like.
Therefore, in order to reliably dry the paper having a large ink ejection amount W, for example, when the ink ejection amount W (ml / m ² ) per unit area on the paper exceeds a predetermined threshold value W1. Drying is performed by the heat roller pair 11 in the second state, which is heated from the first state. Further, when the ink ejection amount W is not so large and is equal to or less than a predetermined threshold value W1, drying by the heat roller pair 11 in the first state (heating is suppressed more than in the second state) is performed. conduct.

As described above, since the first state and the second state of the heat roller pair 11 are switched according to the amount of ink ejected to the paper W, the power consumption of the heat roller pair 11 can be suppressed.
The conditions for the ink ejection amount W can be subdivided, and for example, as the ink ejection amount W decreases, the heating temperature can be gradually lowered or the heating time can be gradually shortened.

<< Control according to the amount of margin >>
The control unit 27 can control the operation of the heat roller pair 11 according to the margin amount N (mm) in the tip region of the paper.
Table 5 shows an example of operation control of the heat roller pair 11 according to the margin amount N in the front end region of the paper.

When the margin amount N in the front end region of the paper is small, the front end of the paper tends to curl easily. Therefore, it is easy to get caught in the medium transport path. On the contrary, when the margin amount N in the front end region of the paper is large, curling tends not to occur at the front end of the paper.
Therefore, for example, when the margin amount N of the paper in the tip region of the paper is equal to or less than a predetermined threshold value N1, drying is performed by the heat roller pair 11 in the second state, which is heated from the first state. Further, when the margin amount N of the paper in the tip region of the paper exceeds a predetermined threshold value N1, drying is performed by the heat roller pair 11 in the first state in which heating is suppressed.

The condition of the margin amount N at the tip of the paper can be subdivided, and for example, the heating temperature can be gradually lowered or the heating time can be gradually shortened as the margin amount N increases.
As described above, since the first state and the second state of the heat roller pair 11 are switched according to the margin amount N of the paper, the power consumption of the heat roller pair 11 can be suppressed.

<< Control according to paper transfer speed >>
The control unit 27 can control the operation of the heat roller pair 11 according to the paper transport speed when the heat roller pair 11 is used for drying.
In the present embodiment, the transport speed of the paper transported by the belt transport means 20 located on the upstream side of the heat roller pair 11 is a predetermined transport speed V and a speed of 3/4 of the transport speed V (hereinafter referred to as “)”. It can be changed to 3/4V), 1/2 speed (hereinafter, 1 / 2V), and 1/4 speed (hereinafter, 1 / 4V).
Table 6 shows an example of operation control of the heat roller pair 11 according to the paper transport speed.

When the paper transport speed is high (for example, the transport speed V, 3/4 V), the contact time with the heat roller pair 11 is short, so that the heat roller pair 11 in the second state, which is heated more, is used for drying. Further, when the paper transport speed is slow (for example, the transport speed is 1 / 2V, 1 / 4V), or when the paper is stopped in a state of being pinched by the heat roller pair 11, for example, the first method in which heating is suppressed is suppressed. Drying is performed by the heat roller pair 11 in the state of.
As described above, since the first state and the second state of the heat roller pair 11 are switched according to the paper transport speed, the power consumption of the heat roller pair 11 can be suppressed.

<< Control according to whether or not the recording surface of the latest paper is the back surface of the surface on which recording has already been performed >>
The control unit 27 can control the operation of the heat roller pair 11 depending on whether or not the nearest recording surface of the paper to be dried is the back surface of the surface on which recording has already been performed. "The recording surface of the most recent paper is the back surface of the surface on which recording has already been performed", that is, the paper on which recording has been performed on the second surface after recording on the first surface during double-sided recording. Refers to the second side. "The recording surface of the most recent paper is not the back side of the side on which recording has already been performed" means that after recording on the first side of the paper when performing double-sided recording, in addition to the single side of the paper when single-sided recording is performed. Refers to the first side of the paper.
Table 7 shows an example of operation control of the heat roller pair 11 according to the paper transport speed.

The recording surface of the nearest paper is the first surface, that is, the paper for which recording is performed only on the first surface is dried by the heat roller pair 11 in the first state in which heating is suppressed. On the other hand, the recording surface of the most recent paper is the second surface, that is, the paper after double-sided recording tends to have lower rigidity than the paper after single-sided recording, so that the first state is to perform more reliable drying. Drying is performed by the heat roller pair 11 in the second state, which is heated more than that.
As described above, the dried paper is in the first state and the second state of the heat roller pair 11 depending on whether or not the recording surface of the nearest paper is the back surface of the surface on which recording has already been performed. Since the above is switched, the power consumption of the heat roller pair 11 can be suppressed.

<< Control according to the environment when drying >>
The control unit 27 can control the operation of the heat roller pair 11 according to the environment at the time of drying. As the environment for drying, for example, one or both of temperature and humidity can be used. Further, the temperature and humidity can be the temperature and humidity in the room where the recording system 1 is installed. A humidity measurement unit and a temperature measurement unit (not shown) may be provided in the recording unit 2 and the measurement results thereof may be used.
In the present embodiment, the recording environment is divided into nine categories K1 to K9 as shown in FIG. 6 according to the relationship between temperature and humidity in the temperature / humidity environment, and the heat roller pair 11 is divided according to the categories K1 to K9. Control the operation.
Table 8 shows an example of operation control of the heat roller pair 11 according to the temperature and humidity environment.

From the viewpoint of the temperature of the temperature / humidity environment alone, the lower the temperature, the more difficult it is to dry, and the higher the temperature, the easier it is to dry. Therefore, when controlling the operation of the heat roller pair 11 according to the temperature of the temperature / humidity environment, the heating temperature of the heat roller pair 11 is gradually lowered or the heating by the heat roller pair 11 is heated as the temperature increases. The time can be shortened step by step.
Further, from the viewpoint of only the humidity of the temperature and humidity environment, the higher the humidity, the more difficult it is to dry, and the lower the temperature, the easier it is to dry. Therefore, when controlling the operation of the heat roller pair 11 according to the humidity of the temperature / humidity environment, the heating temperature of the heat roller pair 11 is gradually lowered as the humidity becomes lower, or the heating by the heat roller pair 11 is performed. The time can be shortened step by step.

As described above, since the first state and the second state of the heat roller pair 11 are switched according to the environment at the time of drying, the power consumption of the heat roller pair 11 can be suppressed.
Among the above-mentioned conditions for drying the paper, it is preferable to control the operation of the heat roller pair 11 according to the condition having a large influence on the easiness of drying the paper.
For example, conditions such as the amount of ink ejected, the type of paper, double-sided recording or single-sided recording are particularly likely to affect the ease of drying of the paper. In addition, depending on the season, the influence of the dry environment (temperature, humidity) becomes large. By preferentially using such conditions, the operation of the heat roller pair 11 (for example, switching of temperature) can be effectively controlled, and the power consumption can be efficiently suppressed.

In addition, each condition such as paper type, paper size, ink ejection amount, margin amount, etc. has a unique coefficient that changes according to the difference in the conditions, and the heat roller pair can be multiplied by the coefficient. It is also possible to determine the operation of 11.
For example, the reference temperature when the paper after recording is conveyed to the second downstream transfer path 30 and the paper is dried by the heat roller pair 11 in the second state is set to T1. This reference temperature T1 is a constant temperature defined regardless of the dry environment.
Then, based on this reference temperature T1, T1 is varied according to the drying environment. For example, in the case of the high temperature classification in Table 8, a coefficient larger than 1 (for example, "1.2") is multiplied by the reference temperature T1. On the contrary, in the case of low temperature classification, a coefficient smaller than 1 (for example, "0.8") is multiplied by the reference temperature T1. By doing so, more appropriate drying can be performed.

In this case, the final temperature of the heat roller pair 11 may be determined by sequentially multiplying by a coefficient according to other conditions.
Further, in this case, the above coefficients may be made different in consideration of the magnitude of the influence on the easiness of drying of the paper. For example, it is considered that the paper size has a small influence on the ease of drying of the paper from the viewpoint of the amount of ink ejected and the type of paper.
Therefore, the above coefficient in the case of high temperature classification from the viewpoint of paper size is set to, for example, "1.1", and the above coefficient in the case of high temperature classification from the viewpoint of ink ejection amount is set to, for example, "1.2". Therefore, weighting may be performed according to the conditions. In this case, for example, the paper type, the ink ejection amount, the margin amount, and whether or not the nearest recording surface is the back surface of the surface on which recording has already been performed, these viewpoints are the paper size, the paper transport speed, and the like. It can be said that the weight is heavier than these viewpoints.

◆◆ Control using multiple conditions ◆◆
The control unit 27 can control the heat roller pair 11 based on the plurality of conditions by using a plurality of conditions as the conditions for drying the paper by the heat roller pair 11.
The multiple conditions include the amount of ink ejected, the type of paper (paper type, basis weight, thickness, rigidity, etc.), the size of the paper, the temperature in the dry environment, the humidity in the dry environment, and the paper. Includes at least two of these: the margin of the leading edge region, whether the most recent recording surface of the paper is the back side of the surface on which recording has already been performed, and the paper transfer speed.

Hereinafter, an example of control using a plurality of conditions will be described with reference to the flowchart shown in FIG. 7.
First, the control unit 27 determines whether or not the recording surface of the nearest paper is the back surface of the surface on which recording has already been performed (step S11). If the recording surface of the latest paper is not the back surface of the surface on which recording has already been performed (NO in step S11), the process proceeds to step S12, and the recording surface of the latest paper is the back surface of the surface on which recording has already been performed. If there is (YES in step S11), the process proceeds to step S15.
In the following, "when the latest recording surface is not the back surface of the surface where recording has already been performed" is referred to as "after single-sided recording", and "when the latest recording surface is the back surface of the surface where recording has already been performed". Is called after one-sided recording.

Subsequently, the control unit 27 determines the size classification of the paper in step S12 or step S15.
In the present embodiment, A4, A5, A6, B5, B6, or letter (LTR) is set to a small size, and a larger size [for example, A3, B4, legal (LGL) size, etc.] is set to a large size. ..

Here, the control unit 27 includes "small size paper after single-sided recording", "large size paper after single-sided recording", "small size paper after double-sided recording", and "large size paper after double-sided recording". Four control tables (first table to fourth table) according to the amount of ink ejected, the temperature in the dry environment, the humidity in the dry environment, and the paper transport speed for each of "size paper". It has a table). Table 9 shows an example of the first table, which is a control table for small size paper after single-sided recording. Table 10 shows an example of the second table, which is a control table for large-sized paper after single-sided recording. Table 11 shows an example of a third table, which is a control table for small size paper after double-sided recording. Table 12 shows an example of a fourth table, which is a control table for large-sized paper after double-sided recording.
In each table, the recording density (%) is a value that increases or decreases according to the amount of ink ejected, and is the total ink with respect to the maximum amount of ink that can be injected into the recordable area (g) of one sheet of paper. It is a ratio of the discharge amount (g). That is, the recording density (%) = the total amount of ink ejected onto one sheet of paper (g) / the maximum amount of ink that can be injected (g) × 100. The maximum ink can be applied to the recordable area of one sheet (g) can be obtained from the maximum ink can be applied per unit area by the line head 10 provided in the recording unit 2.
Further, the recording density (%) is not limited to this, and may be the ratio of the area of the area where the ink is ejected to the area of one sheet of paper.

Then, if it is determined in step S12 that the size of the paper is small, the process proceeds to step S13, and the operation of the heat roller pair 11 is controlled using the first table (Table 9). If it is determined in step S12 that the size of the paper is large, the process proceeds to step S14, and the operation of the heat roller pair 11 is controlled using the second table (Table 10).
If it is determined in step S15 that the size of the paper is small, the process proceeds to step S16, and the operation of the heat roller pair 11 is controlled using the third table (Table 11). If it is determined in step S15 that the size of the paper is large, the process proceeds to step S17, and the operation of the heat roller pair 11 is controlled using the fourth table (Table 12).

As described above, the control unit 27 uses a plurality of conditions as the conditions for drying the paper by the heat roller pair 11, and controls the heat roller pair 11 based on the plurality of conditions to more appropriately heat the paper. The roller pair 11 can be controlled, and thus the power consumption of the heat roller pair 11 can be further reduced.

◆◆ About switching between the first state and the second state of the heat roller pair ◆◆
Switching between the first state and the second state of the heat roller pair 11 may be performed as follows.
That is, the control unit 27 sets the first state of the heat roller pair 11 to a non-heated state in which the heat roller pair 11 is not heated and to a separated state (middle figure of FIG. 4 or right figure of FIG. 4), and heat rollers. The second state of the pair 11 is set to the heating state for heating the heat roller pair 11 and the pinching state (left figure in FIG. 4).

In the first state of the heat roller pair 11, if the heat roller pair 11 is not heated, the power consumption can be effectively suppressed, but on the other hand, the heat roller pair 11 is not heated. In the non-heated state, the paper immediately after recording comes into contact with the heat roller pair 11 in a state where the temperature of the heat roller pair 11 is low. Since ink easily adheres to the roller surface having a low temperature, the ink on the recording surface may adhere to the heat roller pair 11.
However, when the control unit 27 puts the heat roller pair 11 in a non-heated state without heating, the heat roller pair 11 is separated from the heat roller pair 11, so that the heat roller pair 11 is recorded in the non-heated state and the temperature is lowered. It is possible to suppress the possibility of ink on the surface adhering.

Further, assuming that the target heating state is a state in which the heat roller pair 11 reaches a temperature suitable for drying the paper, the temperature of the heat roller pair 11 in the target heating state is set to a high temperature of about 180 ° C. as an example. To.
Therefore, it may take some time from the start of heating the heat roller pair 11 to the temperature rise to the target heating state. If the low temperature heat roller pair 11 that is not in the target heating state is placed in the sandwiched state, the ink on the recording surface may adhere to the low temperature heat roller pair 11.

Therefore, the control unit 27 separates the heat roller pair 11 when the heat roller pair 11 has not reached the target heating state, and sets the heat roller pair 11 when the heat roller pair 11 reaches the target heating state. Put it in a pinched state.
As a result, it is possible to suppress the possibility that the paper comes into contact with the heat roller pair 11 in a state where the heat roller pair 11 has not reached the target heating state, and ink on the recording surface adheres to the heat roller pair 11.

Further, the control unit 27 can also control the heating state of the driven roller 11b and the heating state of the driving roller 11a among the heat roller pair 11.
For example, the driven roller 11b is controlled to be heated more than the driving roller 11a. Since the driven roller 11b in contact with the nearest recording surface is heated more than the drive roller 11a in contact with the opposite surface of the nearest recording surface, the recording surface can be reliably dried and power consumption can be suppressed.

■■■ Other examples of controlling the operation of the heat roller pair by the control unit ■■■
Subsequently, another example of controlling the operation of the heat roller pair 11 by the control unit 27 will be described.
As described above, the heat roller pair 11 (drying section) includes the line head 10 (recording section) and the downstream transport path having a plurality of medium transport paths (first downstream transport path 13 and second downstream transport). It is provided in the medium transport path between the branch portion G1 that branches to the path 30) and the branch portion G1. Further, the position where the heat roller pair 11 is provided is also between the branch portion G2 where the medium transport path branches into the double-sided recording switchback path 15 as the third downstream transport path, and the line head 10. be.

Then, in the control unit 27, the paper after recording by the line head 10 has a plurality of downstream transfer paths [first downstream transfer path 13, second downstream transfer path 30, double-sided recording switchback path 15 ( The operation of the heat roller pair 11 can be controlled depending on which of the third downstream transport paths)]. In other words, the operation of the heat roller pair 11 can be controlled according to the destination of the paper after recording.

A first downstream transport path 13 for ejecting paper from the first ejection unit 8 provided in the recording unit 2, and a second downstream that is ejected after being sent to the post-processing unit 4 via the relay unit 3. In the side transport path 30, the second downstream transport path 30 is longer than the first downstream transport path 13, and the medium transport path is complicated (see FIG. 1).
When the paper after recording passes through a long and complicated medium transport path, if the paper after recording is not sufficiently dried, the curl that occurs on the paper after recording and the decrease in the rigidity of the paper due to the inclusion of ink (liquid). There is an increased risk that the paper will be caught in the medium transport path or jammed due to such factors. Therefore, it is necessary to dry the paper after recording firmly.
On the other hand, when the paper is conveyed through the first downstream transfer path 13, which is a medium transfer path having a relatively simple shape, even if the paper is not sufficiently dried after recording, the paper is transferred to the medium transfer path. There is little risk of getting caught or clogged. Therefore, some drying may be sufficient.

Here, the control unit 27 transfers the paper after recording by the line head 10 to any of the first downstream transfer path 13, the second downstream transfer path 30, and the double-sided recording switchback path 15. By controlling the operation of the heat roller pair 11 according to whether or not it is sent, wasteful power consumption can be suppressed and the running cost in the recording unit 2 (recording device) can be reduced.
Hereinafter, a specific example will be given for further description.

As described above, the recording system 1 has a first downstream transport path 13 and a second downstream transport path 30 having a longer path length than the first downstream transport path 13 as a plurality of downstream transport paths. And, including.
Then, when the paper after recording is sent to the first downstream transfer path 13, the control unit 27 lowers the temperature of the heat roller pair 11 and feeds the paper after recording to the second downstream transfer path 30. If so, heat the heat roller pair 11 to a higher temperature than a lower temperature. It should be noted that the high temperature and the low temperature referred to here indicate a relative relationship (high and low temperature) with each other.

Explaining with reference to the flowchart shown in FIG. 5, the control unit 27 determines to which downstream transport path the paper after recording is to be transported (step S1).
In step S1, when it is determined that the paper after recording is conveyed to the first downstream transfer path 13 which is a medium transfer path having a relatively simple shape, the heating of the heat roller pair 11 is reduced to a low temperature. And dry the paper (step S2). Further, in step S1, when it is determined that the paper after recording is conveyed to the second downstream transfer path 30 which is more complicated and has a longer path length than the first downstream transfer path 13, the heat roller is used. The paper is dried in a high temperature state in which the pair 11 is relatively heated compared to the low temperature state (step S3).
When the temperature of the heat roller pair 11 is lowered, the heating of the heat roller pair 11 may be turned off, that is, the heat roller pair 11 may not be heated.

By executing such control by the control unit 27, if the paper is not sufficiently dried, problems such as paper jams in the path are likely to occur, and the second downstream transfer path 30 having a long path length is likely to occur. In addition, when the paper after recording is sent, the paper can be reliably dried and the possibility of occurrence of defects can be reduced.
On the other hand, when the paper after recording is sent to the first downstream transfer path 13 which has a short path length and is relatively less likely to cause a problem than the second downstream transfer path 30, the heat roller pair 11 is used. It is possible to suppress heating and reduce the running cost of the device.

Further, the control unit 27 controls the degree of heating of the heat roller pair 11, for example, the heating state of the heat roller pair 11 is the same (for example, the second state), and the paper after recording is on any downstream side. It is also possible to execute a control for changing the heating time depending on whether or not the heat is transported to the side transport path.
Specifically, when the paper after recording is conveyed to the first downstream transfer path 13, the heating time of the heat roller pair 11 is set to the first heating time, and the paper after recording is the second. When transported to the downstream transport path 30, the heating time of the heat roller pair 11 is set to the second heating time, which is relatively longer than the first heating time. This also enhances the certainty of drying of the paper conveyed to the second downstream transfer path 30, and also enhances the certainty of drying of the paper conveyed to the second downstream transfer path 30, and also increases the reliability of the first downstream side, which is relatively less likely to cause a problem than the second downstream transfer path 30. When the paper after recording is sent to the transport path 13, the heating time of the heat roller pair 11 can be shortened to reduce the running cost of the apparatus.

Even when the paper after recording is conveyed to the double-sided recording switchback path 15 as the “third downstream transfer path”, the operation of the heat roller pair 11 is controlled by the control unit 27.
The paper conveyed to the double-sided recording switchback path 15 is conveyed to the inversion path 16, and as a result, the path length is longer than that of the first downstream transfer path 13, and the path is often curved. It will be transported along various media transport routes. Therefore, for example, the paper can be dried under the same conditions as the second downstream transfer path 30.
Further, since the switchback path 15 for double-sided recording and the inversion path 16 have a shorter path length than the second downstream transfer path 30 and the shape of the path is simple, paper is placed in the first downstream transfer path 13. Although the heat roller pair 11 is heated more than when the paper is fed, it is possible to suppress the heating of the heat roller pair 11 as compared with the case where the paper is fed to the second downstream transfer path 30.

Further, since the heat roller pair 11 is provided in the medium transport path on the upstream side of the branch portions G1 and G2 that branch to the plurality of downstream transport paths, the paper after recording by the line head 10 is a plurality of downstream. The paper can be dried by one heat roller pair 11 regardless of which of the side transport paths is sent, and it is possible to suppress the increase in size and cost of the device.

It should be noted that the control of the heat roller pair 11 according to the paper transport destination after this recording is replaced with the control of the heat roller pair 11 according to the environment (drying environment) when drying the paper described above. In addition to this, it is also possible to perform control according to the destination of the paper after recording, and then perform control according to the drying environment according to the result.
For example, when it is determined that the paper after recording is transported to the second downstream transport path 30, which is more complicated and has a longer path length than the first downstream transport path 13, the high temperature state of the heat roller pair 11 Can be changed according to the conditions of the dry environment.
Similarly, the low temperature state of the heat roller pair 11 when it is determined that the paper after recording is conveyed to the first downstream transfer path 13 can be changed according to the conditions of the dry environment.

■■■ Other configurations in the recording unit ■■■
Hereinafter, other configurations in the recording unit 2 according to this embodiment will be described.
The recording unit 2 (FIG. 2) is configured to be capable of feeding paper stored in the paper storage cassette 7 for recording and feeding paper from the manual feed tray 70. In FIG. 2, the dotted line R shows the transport path when the paper is fed from the manual feed tray 70.
The paper fed from the bypass tray 70 is fed by the transport roller pair 71, merges with the straight path 12, and is recorded by the line head 10. In the case of double-sided recording, after recording on the first surface, it is inverted through the double-sided recording switchback path 15 and the inversion path 16, and recording is performed on the second surface.
The paper after recording is connected to the straight path 12, is conveyed through the fourth downstream transfer path 74 extending linearly, and is placed on the output tray 73 through the ejection section 72.

Since the fourth downstream transport path 74 is short and the shape is almost linear and simple, when the recorded paper is fed to the fourth downstream transport path 74, the first downstream transport path 74 is used. It is desirable that the paper be dried in the first state as in the case where the paper is sent to 13.

In the present embodiment, the recording system 1 is configured by combining an individual recording unit 2, a relay unit 3, and a post-processing unit 4, but the recording unit 2, the relay unit 3, and the post-processing unit are configured. It is also possible to make a recording system in which 4 is integrally configured.
Further, even when a relay unit or a post-processing unit having a configuration other than the relay unit 3 and the post-processing unit 4 is connected, the recording unit 2 operates various operations of the heat roller pair 11 under the control of the control unit 27. It is configured to be controllable.

[Second Embodiment]
In this embodiment, a recording system 1A including a recording unit 2A having a different arrangement of heat roller pairs as a “drying portion” will be described with reference to FIG. FIG. 8 is a schematic diagram showing a recording system according to the second embodiment.
In the present embodiment, the same components as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

In the recording unit 2A (recording system 1A), the heat roller pair 11A as a "drying part" that contacts the paper and dries the paper after recording by heating is sent to the first downstream side of the paper after recording. Of the plurality of downstream transport routes including the transport path 13 and the second downstream transport path 30 having a longer path length than the first downstream transport path 13, the first downstream transport path 13 has a transport path 13. It is not provided, but is provided in the second downstream transport path 30.
More specifically, the heat roller pair 11A is provided in the recording unit path 31 of the recording unit 2A. In other words, it is provided in the medium transport path between the branch portion G and the delivery portion 28.

The heat roller pair 11A is not provided in the first downstream transfer path 13, but is provided in the second downstream transfer path 30, so that the paper in the path is not sufficiently dried. When the paper is fed to the second downstream transport path 30 having a long path length, which is prone to problems such as clogging, the paper can be reliably dried and the possibility of problems can be reduced.
On the other hand, when the paper is sent to the first downstream transfer path 13 which has a short path length and is less likely to cause a problem, the drying section does not perform drying, wasteful power consumption is avoided, and the running cost of the recording device is reduced. Can be suppressed.

The heat roller pair 11A provided in the recording system 1A is not limited to the recording unit 2A as long as it is the second downstream transfer path 30, and may be provided in the relay unit 3, for example. As an example, the transport roller pair 38 on the most upstream side can be a heat roller pair.
Depending on the shape and path length of the medium transfer path (relay unit path 32) in the relay unit 3, it is possible to provide the heat roller pair 11A in the medium transfer path (post-processing unit path) of the post-processing unit 4.

[Third Embodiment]
In this embodiment, still another example of the recording system according to the present invention will be described with reference to FIG. FIG. 9 is a schematic diagram showing a recording system according to the third embodiment.
Also in this embodiment, the same components as those in the above-described embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

In the recording system 1B according to the present embodiment, the recording unit 2B (recording device) is a first downstream transport as a plurality of downstream transport routes branched by branch portions G1 and G2 located on the downstream side of the line head 10. A heat roller pair 11A, 11B, 11C as a "drying portion" is provided in each of the path 13, the second downstream transfer path 30, and the double-sided recording switchback path 15 as the third downstream transfer path. There is.
The heat roller pairs 11A, 11B, and 11C are individually controlled by the control unit 27.

Heat roller pairs 11A, 11B, and 11C are provided in each of the first downstream transfer path 13, the second downstream transfer path 30, and the double-sided recording switchback path 15 as a plurality of downstream transfer paths. This makes it possible to dry the paper under conditions suitable for each downstream transport path. Therefore, the paper can be appropriately dried and the power consumption can be suppressed.

The arrangement of the heat roller pair 11A provided in the second downstream transfer path 30 is not limited to the recording unit 2A as long as it is the second downstream transfer path 30, and may be provided in the relay unit 3, for example. As an example, the transport roller pair 38 on the most upstream side can be a heat roller pair. Depending on the shape and path length of the medium transfer path (relay unit path 32) in the relay unit 3, it is possible to provide the heat roller pair 11A in the medium transfer path (post-processing unit path) of the post-processing unit 4.

<<< About the route when paper is sent to the second ejection unit via the relay unit >>>
Hereinafter, the second downstream transport path 30, which is the paper transport path when the paper after recording in the line head 10 is ejected from the second ejection unit 40, will be described mainly with reference to FIGS. 10 to 12. ..
FIG. 10 is a schematic view showing a transport path of the relay unit. FIG. 11 is a schematic diagram showing a first route in the relay unit route. FIG. 12 is a schematic diagram showing a second route in the relay unit route.

As shown in FIG. 1, the second downstream transfer path 30 includes the above-mentioned recording unit path 31, the relay unit path 32 which is the transfer path in the relay unit 3, and the post-processing which is the transfer path in the post-processing unit 4. The unit path 33 and the like are provided.
The paper after recording is sent from the delivery unit 28 of the recording unit 2 to the relay unit 3. Specifically, the paper after recording is sent to the recording unit path 31 (FIG. 2), passes through the delivery section 28, and enters the relay unit path 32 from the upstream relay section 34 of the relay unit 3.

Hereinafter, the relay unit route 32 will be described with reference to FIG. In each transport roller pair shown in FIG. 10, the drive roller driven by a drive source such as a motor is shown by a large circle, and the driven roller that is driven and rotated is shown by a small circle. The drive of the moving rollers of each transfer roller pair is controlled by the control unit 27 (FIGS. 1 and 2), and the paper is conveyed along the relay unit path 32.

The relay unit path 32 shown in FIG. 10 has a branch point A, a branch point B, and a branch point C at which the transport path branches, a confluence point D at which the transport paths merge, and an end portion E forming the end of the paper transport path. And an end F. Further, at the branch point A, the branch point B, and the branch point C, a guide flap (not shown) for distributing the paper transport path is provided.

Further, the relay unit path 32 includes an introduction path 50 (between the upstream relay section 34 and the branch point A), a first branch path 51 (between the branch point A and the branch point B), and a first switchback path. 52 (between branch point B and end E), first confluence path 53 (between branch point B and confluence D), and second branch path 54 (between branch point A and branch point C). ), The second switchback path 55 (between the branch point C and the end F), the second merging path 56 (between the branch point C and the merging point D), and the derivation path 64 (between the merging point D). (Between the downstream relay unit 35).

A first transfer roller pair group 57 is provided in the introduction path 50, the first branch path 51, and the second branch path 54. The first switchback path 52 is provided with a second transport roller pair group 58. The second switchback path 55 is provided with a third transport roller pair group 59. A fourth transport roller pair group 60 is provided on the first merging path 53, the second merging path 56, and the upstream side of the lead-out path 64 in the paper transport direction. A fifth transport roller pair group 61, a correction roller pair 62, and a discharge roller pair 63 are provided on the downstream side of the lead-out path 64 in the paper transport direction.

The correction roller pair 62 is a roller pair that corrects the skew of the paper when the skew (skew) of the paper with respect to the transport direction occurs in the relay unit path 32. Specifically, the correction of the paper skew is performed by the control unit 27 by abutting the paper against the correction roller pair 62 (medium transporting means) in the stopped state. The skew can be effectively corrected by abutting the paper against the correction roller pair 62 in the stopped state by increasing the paper transport speed of the fifth transport roller pair group 61 at a high speed. The paper that has been abutted against the correction roller pair 62 and whose skew has been corrected is nipated by the correction roller pair 62 and sent out to the downstream relay unit 35.
The correction roller pair 62 is located on the downstream side in the transport direction with respect to the fifth transport roller pair group 61, and is arranged so that the tip of the paper reaches the downstream side relay portion 35 during transport by the correction roller pair 62. Has been done. That is, the correction roller pair 62 is arranged near the downstream relay portion 35.

The second transfer roller pair group 58 and the third transfer roller pair group 59 can rotate in the forward rotation direction or the reverse rotation direction, and the paper transfer direction in the first switchback path 52 and the second switchback path 55. Can be inverted.

Subsequently, the flow of paper transport in the relay unit path 32 will be described with reference to FIGS. 11 and 12. 11 and 12 are views corresponding to FIG. 10, and are of transport systems such as the first transport roller pair group 57 to the fifth transport roller pair group 61, the correction roller pair 62, and the discharge roller pair 63. Illustration of components is omitted. Further, in FIGS. 11 and 12, the portion of the relay unit path 32 that is used for transporting paper is shown by a solid line, and the portion of the relay unit path 32 that is not used for transporting paper is shown by a broken line. Further, in FIGS. 11 and 12, the arrows in the drawings indicate the paper transport directions, and are designated by the symbols H1 to H6, respectively.

The relay unit route 32 conveys the paper through two routes, the first route 32a (the route shown by the solid line in FIG. 11) and the second route 32b (the route shown by the solid line in FIG. 12) shown in FIG. be able to.
As shown by the solid line in FIG. 11, the first path 32a through which the paper is conveyed includes the introduction path 50, the first branch path 51, the first switchback path 52, the first merging path 53, and the derivation path 64. Consists of.

In the first path 32a (FIG. 11), the paper sent from the upstream relay section 34 passes through the introduction path 50, travels through the first branch path 51 in the transport direction H1, and enters the first switchback path 52. .. The paper carried into the first switchback path 52 travels in the direction of the transport direction H2, then the traveling direction of the paper is reversed (switched back), and the paper travels in the transport direction H3 opposite to the transport direction H2. Enter the first confluence route 53. Subsequently, the paper advances in the transport direction H4 in the first confluence path 53 and enters the lead-out path 64, proceeds in the transport direction H5 and the transport direction H6 in the lead-out path 64, and travels from the downstream relay unit 35 to the post-processing unit 4. It is carried out toward the receiving unit 41 (FIG. 1).

On the other hand, the second path 32b shown by the solid line in FIG. 12 is composed of an introduction path 50, a second branch path 54, a second switchback path 55, a second merging path 56, and a derivation path 64.
In the second path 32b, the paper carried in from the upstream relay section 34 passes through the introduction path 50, proceeds through the second branch path 54 in the transport direction H1, and is carried into the second switchback path 55. The paper carried into the second switchback path 55 travels in the transport direction H2, then the traveling direction of the paper is reversed (switched back), travels in the transport direction H3 opposite to the transport direction H2, and second. It is carried into the confluence route 56. Subsequently, the paper travels in the transport direction H4 in the second merging path 56, is carried into the lead-out path 64, travels in the transport direction H5 and the transport direction H6 in the lead-out path 64, and is carried out from the downstream relay unit 35 to the post-processing unit 4. Is carried out toward the receiving unit 41 (FIG. 1).

When recording on a plurality of sheets in succession, the paper carried in from the upstream relay unit 34 is, for example, the preceding medium on which the recording was performed earlier by a guide flap (not shown) provided at the branch point A. It is guided to the first path 32a. Subsequently, the succeeding medium carried in from the upstream relay unit 34 is guided to the second path 32b by a guide flap (not shown) provided at the branch point A.
Then, the paper transfer by the first path 32a and the paper transfer by the second path 32b are alternately repeated.
As described above, in the second downstream transfer path 30, since the relay unit path 32 includes the first switchback path 52 and the second switchback path 55, the paper is conveyed over a longer transfer distance. Will be.

Subsequently, the paper carried out from the downstream relay unit 35 of the relay unit 3 is carried in from the receiving unit 41 of the post-processing unit 4 shown in FIG. 1 to the post-processing unit path 33. The paper that has entered the post-processing unit path 33 is sent by the transport roller pairs 42 and 43, and the tip end side reaches the second ejection unit 40. A guide flap 45 is provided in the vicinity of the upstream side of the second ejection unit 40, and is guided by the guide flap 45 so that the paper rear end side is set to the −Z axis direction side and the paper is stacked on the post-processing unit 44.
When the set number of sheets (which may be one) are stacked in the post-processing unit 44, post-processing (cutting, staple processing, etc.) is executed. The paper or the bundle of paper after the post-processing is executed is discharged in the + Y-axis direction by the discharge roller 46 and placed on the discharge tray 47.

In the first switchback path 52 or the second switchback path 55 of the relay unit path 32, the position of the paper surface (for example, the first surface) with respect to the transport direction is reversed before and after the paper traveling direction is switched back. Will be done.
Therefore, the front and back sides (positions of the first side and the second side) of the paper carried in from the upstream side relay unit 34 are reversed with respect to the transport direction while being conveyed through the first path 32a or the second path 32b. .. Then, the paper is carried out from the downstream relay unit 35 toward the post-processing unit 4 (FIG. 1) with the front and back sides reversed with respect to the transport direction.

Although an example of a recording unit as a recording device according to the present invention and a recording system including the same has been described above, the present invention is not limited to the above embodiment and is within the scope of the invention described in the claims. It goes without saying that various modifications are possible, and these are also included in the scope of the present invention.

1 ... Recording system, 2 ... Recording unit (recording device), 3 ... Relay unit, 4 ... Post-processing unit, 5 ... Printer unit, 6 ... Scanner unit, 7 ... Paper storage cassette, 8 ... First ejection unit, 9 ... Medium mounting unit, 10 ... line head, 11 ... heat roller pair, 11a ... drive roller, 11b ... driven roller, 12 ... straight path, 13 ... first downstream transport path, 14 ... feed path, 15 ... both sides Recording switchback path, 16 ... reversal path, 17 ... feed roller, 18 ... separation roller pair, 19 ... resist roller pair, 20 ... belt transfer means, 21 ... transfer roller pair, 22 ... transfer roller pair, 23 ... transfer Roller pair group, 24 ... Conveying roller pair, 25 ... Static elimination unit, 26 ... Switching unit, 27 ... Control unit, 28 ... Delivery unit, 29 ... Conveying roller pair, 30 ... Second downstream transfer path, 31 ... Recording unit Route, 32 ... Relay unit route, 33 ... Post-processing unit route, 34 ... Upstream relay unit, 35 ... Downstream relay unit, 36, 37 ... Guide flap, 38 ... Conveyor roller pair, 40 ... Second discharge unit, 41 ... receiving section, 42, 43 ... transport roller pair, 44 ... post-processing section, 45 ... guide flap, 46 ... discharging roller, 47 ... discharging tray, 50 ... introduction path, 51 ... first branch path, 52 ... first switch Back path, 53 ... 1st confluence path, 54 ... 2nd branch path, 55 ... 2nd switchback path, 56 ... 2nd confluence path, 57 ... 1st transfer roller pair group, 58 ... 2nd transfer roller pair Group, 59 ... 3rd transfer roller pair, 60 ... 4th transfer roller pair, 61 ... 5th transfer roller pair, 62 ... correction roller pair, 63 ... discharge roller pair, 70 ... manual feed tray, 71 ... Transport roller pair, 72 ... Discharge section, 73 ... Paper output tray, 74 ... 4th downstream transport path, 81 ... 1st holding section, 82 ... 2nd holding section, 83 ... Shaft section, 84 ... Giza roller (accelerating) ), G1, G2 ... Branch

Claims (11)

A recording unit that discharges liquid to the medium for recording,
A drying part that comes into contact with the medium and dries the medium after recording by heating.
A control unit that controls the operation of the drying unit is provided.
The drying portion includes a pair of rollers that sandwich the medium between the first roller and the second roller, and at least one of the first roller and the second roller is heated.
The roller pair is configured to be switchable between a holding state in which the medium can be held between the first roller and the second roller and a separated state in which the first roller and the second roller are separated from each other. Being done
The control unit controls the drying unit according to the conditions for drying the medium by the drying unit .
The control unit uses the discharge amount of the liquid as a condition for drying the liquid.
When the discharge amount of the liquid is equal to or less than a predetermined threshold value, the dried portion is set to the first state.
When the discharge amount of the liquid exceeds the threshold value, the dried portion is set to the second state of heating more than the first state.
The control unit
As the first state, the dried portion is placed in a non-heated state in which the roller pair is not heated and in a separated state.
As the second state, the dried portion is placed in a heated state for heating the roller pair and in a pinched state.
A recording device characterized by that. A recording unit that discharges liquid to the medium for recording,
A drying part that comes into contact with the medium and dries the medium after recording by heating.
A control unit that controls the operation of the drying unit is provided.
The drying portion includes a pair of rollers that sandwich the medium between the first roller and the second roller, and at least one of the first roller and the second roller is heated.
The roller pair is configured to be switchable between a holding state in which the medium can be held between the first roller and the second roller and a separated state in which the first roller and the second roller are separated from each other. Being done
The control unit controls the drying unit according to the conditions for drying the medium by the drying unit .
The control unit uses the discharge amount of the liquid as a condition for drying the liquid.
When the discharge amount of the liquid is equal to or less than a predetermined threshold value, the dried portion is set to the first state.
When the discharge amount of the liquid exceeds the threshold value, the dried portion is set to the second state of heating more than the first state.
The control unit
When the roller pair has not reached the target heating state, the roller pair is set to the separated state.
When the roller pair reaches the target heating state, the roller pair is put into the holding state.
A recording device characterized by that. A recording unit that discharges liquid to the medium for recording,
A drying part that comes into contact with the medium and dries the medium after recording by heating.
A control unit that controls the operation of the drying unit is provided.
The drying portion includes a pair of rollers that sandwich the medium between the first roller and the second roller, and at least one of the first roller and the second roller is heated.
The roller pair is configured to be switchable between a holding state in which the medium can be held between the first roller and the second roller and a separated state in which the first roller and the second roller are separated from each other. Being done
The first roller is provided on the side of the recording surface closest to the medium and is provided so as to be able to move forward and backward with respect to the medium transport path, and is separated from the medium transport path in the separated state.
A spur capable of advancing and retreating with respect to the medium transport path is provided on the side of the recording surface closest to the medium.
In the spur, in a state where the first roller is separated from the medium transport path, the spur is in a state of advancing into the medium transport path and sandwiches the medium with the second roller.
The control unit controls the drying unit according to the conditions for drying the medium by the drying unit .
The control unit uses the discharge amount of the liquid as a condition for drying the liquid.
When the discharge amount of the liquid is equal to or less than a predetermined threshold value, the dried portion is set to the first state.
When the discharge amount of the liquid exceeds the threshold value, the dried portion is brought into a second state in which the dried portion is heated more than the first state.
A recording device characterized by that. A recording unit that discharges liquid to the medium for recording,
A drying part that comes into contact with the medium and dries the medium after recording by heating.
A control unit that controls the operation of the drying unit,
A plurality of downstream transport routes branching at a branch located on the downstream side of the recording unit are provided.
The control unit controls the drying unit according to the conditions for drying the medium by the drying unit.
The drying unit is provided in each of the plurality of downstream transport paths and is individually controlled by the control unit.
A recording device characterized by that. In the recording device according to any one of claims 1 to 4, the control unit uses a plurality of conditions as conditions for attempting the drying, and controls the drying unit based on the plurality of conditions. do,
A recording device characterized by that. In the recording apparatus according to claim 5 , the plurality of conditions are:
The discharge amount of the liquid and
The type of medium and
The size of the medium and
The temperature in the installation environment of the device and
Humidity in the installation environment and
The amount of margin in the tip region of the medium and
Whether or not the most recent recording surface of the medium is the back surface of the surface on which recording has already been performed.
The transport speed of the medium and
Including at least two of these,
A recording device characterized by that. In the recording apparatus according to any one of claims 1 to 3 .
Both the first roller and the second roller are heated.
A recording device characterized by that. In the recording apparatus according to any one of claims 1 to 3 .
In the sandwiched state of the roller pair, both the first roller and the second roller advance into the medium transport path, and in the separated state of the roller pair, both the first roller and the second roller are media. It is configured to evacuate from the transport route.
A recording device characterized by that. The recording device according to any one of claims 1 to 3 , comprising a plurality of downstream transport paths branching at a branch located on the downstream side of the recording unit.
The drying section is provided in the medium transport path between the recording section and the branch section.
A recording device characterized by that. A recording unit having a recording unit that discharges a liquid to a medium for recording.
An adjacent unit provided adjacent to the recording unit and receiving and transporting the medium from the recording unit,
A drying part that comes into contact with the medium and dries the medium after recording by heating.
A control unit that controls the operation of the drying unit is provided.
The control unit controls the drying unit according to the conditions for drying the medium by the drying unit .
The drying unit is provided in the transport path of the recording unit and the transport path of the adjacent unit, and is individually controlled by the control unit.
A recording system characterized by that. A recording unit having a recording unit that discharges a liquid to a medium for recording.
A post-processing unit having a post-processing unit that performs post-processing on the medium recorded by the recording unit, and
A drying part that comes into contact with the medium and dries the medium after recording by heating.
A control unit that controls the operation of the drying unit is provided.
The control unit controls the drying unit according to the conditions for drying the medium by the drying unit .
The drying unit is provided in the transport path of the recording unit and the transport path of the post-processing unit, and is individually controlled by the control unit.
A recording system characterized by that.

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