Recording apparatus

Abstract

To solve the first problem that not both of downsizing and heat generation of a motor are taken into consideration and the second problem that not both of downsizing and quietness are taken into consideration, in a conventional art.SOLUTION: A recording apparatus comprises: a recording part that performs recording on a medium being conveyed in a first direction; a recording-time conveyance path opposing to the recording part; a guiding path which is positioned below the recording-time conveyance path, and through which the medium passed from the recording-time conveyance path is guided in a second direction being an opposite direction to the first direction; a reversing path that is connected to the guiding path, reverses the medium. and causes the medium to join to the recording-time conveyance path; a reversing roller that is arranged in the reversing path, and feeds the medium downstream in the reversing path; a motor for reversing that drives the reversing roller; a first path forming part forming a lower surface of the recording-time conveyance path; and a second path forming part forming an upper surface of the guiding path. Therein the motor for reversing is arranged at a position sandwiched by the first path forming part and the second path forming part.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a recording device for recording on a medium. [Background technology]

[0002] Patent Document 1 discloses a printer in which the transport path for recording paper is formed in a U-shape, and a thermal head is disposed inside this U-shape. In this printer, a stepping motor that is the power source for a grip roller that transports the recording paper is disposed inside the U-shape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-253138 A Summary of the Invention [Problem to be solved by the invention]

[0004] The motor is a heat source, and for example, when the recording means is an inkjet recording head, the heat generated by the motor may adversely affect the ink ejection accuracy of the inkjet recording head. Even when the recording means is something other than an inkjet recording head, the influence of heat is a concern. The printer described in Patent Document 1 aims to make the device smaller and thinner by placing the stepping motor inside the U-shaped transport path, but the stepping motor is placed in the same space as the thermal head. Therefore, the heat generated by the stepping motor is directly transferred to the thermal head by radiation, and no consideration is given to the adverse effects that the heat generated by the stepping motor may have on the thermal head. In other words, the configuration described in Patent Document 1 does not take into consideration both miniaturization and heat generation by the motor. Below, this is referred to as the first problem with the prior art.

[0005] Furthermore, in the printer described in Patent Document 1, the stepping motor is provided in an exposed state facing the top surface of the device. In such a configuration, the operating sound of the motor is likely to leak from the top surface of the device. The noise leaking from the top surface of the device is likely to be unpleasant to the user, and there is room for improvement. In other words, the configuration described in Patent Document 1 does not take into consideration both miniaturization and quietness. Below, this is referred to as the second problem with the prior art. As described above, the conventional technology has a first problem and a second problem, and it is desirable to solve at least one of the first problem and the second problem. [Means for solving the problem]

[0006] In order to solve the above problem, the recording device of the present invention comprises a recording unit that records on a medium transported in a first direction, a recording transport path that is a medium transport path facing the recording unit, a guide path that is a medium transport path located below the recording transport path and guides the medium that has exited the recording transport path in a second direction opposite to the first direction, a reversal path that is a medium transport path connected to the guide path and reverses the medium to join the recording transport path, a reversal roller that is disposed on the reversal path and sends the medium downstream of the reversal path, a reversal motor that drives the reversal roller, a first path forming portion that forms a lower surface of the recording transport path, and a second path forming portion that forms an upper surface of the guide path, and is characterized in that the reversal motor is disposed at a position sandwiched between the first path forming portion and the second path forming portion. [Brief description of the drawings]

[0007] [Figure 1] FIG. [Diagram 2] A view of the printer's media transport path from the left side of the device. [Diagram 3] FIG. 4 is a block diagram showing a control system of the printer. [Figure 4] 13 is a cross-sectional view of the shutter, the cap unit, and the first path forming member in a state where the shutter is in the blocking position and the cap unit is in the lowered position. FIG. [Diagram 5] 11 is a cross-sectional view of the shutter, the cap unit, and the first path forming member in a state where the shutter is in an open position and the cap portion is in a lowered position. FIG. [Figure 6] 11 is a cross-sectional view of the shutter, the cap unit, and the first path forming member in a state where the shutter is in an open position and the cap portion is in a raised position. FIG. [Figure 7] A view of the printer's media transport path from the right side of the device. [Figure 8] FIG. 2 is a diagram illustrating the components of the printer. [Figure 9] FIG. 4 is a plan view showing an arrangement of each component relative to a first path forming member. [Figure 10] A view of the printer's media transport path from the left side of the device. [Figure 11] FIG. 4 is a plan view showing an arrangement of each component relative to a first path forming member. [Figure 12] 13 is a cross-sectional view of the shutter, the cap unit, and the first path forming member in a state where the shutter is in the blocking position and the cap unit is in the lowered position. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The present invention will now be briefly described. A recording device according to a first aspect of the present invention comprises a recording unit that records on a medium transported in a first direction, a recording transport path that is a medium transport path facing the recording unit, a guide path that is a medium transport path located below the recording transport path and guides the medium that has exited the recording transport path in a second direction opposite to the first direction, a reversal path that is a medium transport path connected to the guide path and reverses the medium to join the recording transport path, a reversal roller that is disposed on the reversal path and sends the medium downstream of the reversal path, a reversal motor that drives the reversal roller, a first path forming portion that forms a lower surface of the recording transport path, and a second path forming portion that forms an upper surface of the guide path, and the reversal motor is disposed at a position sandwiched between the first path forming portion and the second path forming portion.

[0009] According to this aspect, the reversing motor, which is a heat source, is disposed at a position sandwiched between the first path forming portion and the second path forming portion, so that the first path forming portion is located between the reversing motor and the recording portion, and it is possible to prevent the heat generated by the reversing motor from being transmitted to the recording portion by radiation. This makes it possible to prevent the heat generated by the reversing motor from adversely affecting the recording portion. Hereinafter, this is referred to as a first effect related to the reversing motor. In addition, since the reversing motor is disposed at a position sandwiched between the first path forming portion and the second path forming portion and a part or the whole of the reversing motor is covered by the first path forming portion, the operation sound of the reversing motor is less likely to leak from the top surface of the device. Hereinafter, this is referred to as a second effect related to the reversing motor. According to this aspect, at least one of the first and second operational effects related to the reversing motor can be obtained. Furthermore, by disposing the reversing motor at a position sandwiched between the first path forming portion and the second path forming portion, the space between the recording transport path and the guide path can be effectively utilized, and the device can be made compact.

[0010] The second aspect is an aspect dependent on the first aspect, and is characterized in that it comprises a media storage section located below the inversion path for storing the medium before feeding, and a pick roller for sending the medium from the media storage section, in which the medium sent from the media storage section is sent into the inversion path, and the pick roller is driven by the inversion motor.

[0011] When the pick roller is driven by the reversing motor, the reversing motor is more likely to generate heat, but the effect of the first aspect described above makes it possible to prevent the heat generated by the reversing motor from adversely affecting the recording unit.

[0012] A third aspect is an aspect dependent on the second aspect, and is characterized in that it comprises a medium support section located above the transport path during recording and supporting the medium before it is fed, and a feed roller that sends out the medium from the medium support section, in which the medium fed from the medium support section is fed into the transport path during recording, and the feed roller is driven by the reversing motor.

[0013] When the feed roller is driven by the reversing motor, the reversing motor is more likely to generate heat, but the effect of the first aspect described above makes it possible to prevent the heat generated by the reversing motor from adversely affecting the recording unit. Incidentally, this aspect is not limited to the second aspect, and may be subordinate to the first aspect.

[0014] A fourth aspect is an aspect dependent on the third aspect, characterized in that the reversing roller, the pick roller, and the feed roller are positioned in the second direction relative to the recording unit, and the reversing motor is positioned in the second direction relative to the recording unit.

[0015] According to this aspect, the reversing roller, the pick roller, and the feed roller are located in the second direction relative to the recording unit, and the reversing motor is also located in the second direction relative to the recording unit, so that the distance between the reversing motor and the reversing roller, the distance between the reversing motor and the pick roller, and the distance between the reversing motor and the feed roller can be reduced. As a result, the size of the means for transmitting power from the reversing motor to the reversing roller, the means for transmitting power from the reversing motor to the pick roller, and the means for transmitting power from the reversing motor to the feed roller can be reduced, which contributes to the miniaturization of the entire device.

[0016] A fifth aspect is a dependent aspect of the first aspect, and is characterized in that at least the motor main body portion of the reversing motor does not protrude in the width direction, which is a direction intersecting the first direction, beyond the first path forming portion when viewed from a normal direction to the surface of the medium transported along the recording transport path.

[0017] According to this aspect, at least the motor main body portion of the reversing motor does not protrude beyond the first path forming portion in the width direction, which is a direction intersecting the first direction, when viewed from a direction normal to the surface of the medium transported along the transport path during recording, thereby effectively reducing the device dimension in the width direction. In addition, since the motor main body is entirely covered by the first path forming portion, the first effect or the second effect can be effectively obtained. Incidentally, this aspect is not limited to the above-mentioned first aspect, and may be subordinate to any of the above-mentioned second to fourth aspects.

[0018] A sixth aspect is an aspect dependent on the first aspect, characterized in that the reversing motor contacts the second path forming portion. According to this aspect, the reversing motor is in contact with the second path forming portion, and therefore heat generated in the reversing motor can be effectively conducted to the second path forming portion. Here, the second path forming section forms the guide path, and since the guide path is a path used when reversing the medium on which the recording section has recorded, by increasing the temperature in the guide path, it is possible to promote drying of the medium on which the liquid has been discharged. In other words, by effectively transmitting the heat generated by the reversing motor to the second path forming section, it is possible to promote drying of the medium on which the liquid has been discharged. Incidentally, this aspect is not limited to the above-mentioned first aspect, and may be subordinate to any of the above-mentioned second to fifth aspects.

[0019] A seventh aspect is an aspect dependent on the fourth aspect, and includes a discharge path located downstream of the recording transport path for discharging a medium on which recording has been performed, a discharge roller disposed on the discharge path for sending the medium downstream of the discharge path, and a discharge motor for driving the discharge roller, wherein the discharge motor is located between the first path forming portion and the second path forming portion, and is disposed in the first direction relative to the recording portion.

[0020] In a configuration in which the ejection motor is provided in addition to the reversing motor, heat generated by the ejection motor in addition to the reversing motor may adversely affect the recording unit. According to this aspect, the ejection motor is provided at a position sandwiched between the first path forming portion and the second path forming portion, thereby preventing heat generated by the ejection motor from being transmitted to the recording portion by radiation. In addition, since the ejection motor is located in the first direction with respect to the recording unit, the reversing motor and the ejection motor are disposed with the recording unit therebetween, i.e., the reversing motor and the ejection motor are disposed apart from each other, which effectively prevents heat generated by the reversing motor and the ejection motor from adversely affecting the recording unit.

[0021] Furthermore, in a configuration that includes the ejection motor in addition to the inversion motor, noise is generated by the ejection motor in addition to noise generated by the inversion motor. However, since a part or all of the ejection motor is covered by the first path forming portion, the operating sound of the ejection motor is less likely to leak from the top surface of the device. Incidentally, this aspect is not limited to the above-mentioned fourth aspect, and may be subordinate to any of the above-mentioned first to third aspects, or any of the above-mentioned fifth and sixth aspects.

[0022] The eighth aspect is an aspect dependent on the seventh aspect, and is characterized in that it comprises a transport roller that is disposed on the transport path during recording and sends the medium downstream of the transport path during recording, and a transport motor that drives the transport roller, and the transport motor is disposed at a position sandwiched between the first path forming portion and the second path forming portion.

[0023] In a configuration including the transport motor in addition to the reversing motor and the ejection motor, heat generated by the transport motor in addition to the reversing motor and the ejection motor may adversely affect the recording unit. According to this aspect, the transport motor is provided at a position sandwiched between the first path forming portion and the second path forming portion, thereby preventing heat generated by the transport motor from being transmitted to the recording portion by radiation.

[0024] Furthermore, in a configuration that includes the transport motor in addition to the inversion motor and the discharge motor, noise is generated by the transport motor in addition to the noise generated by the inversion motor and the discharge motor. However, since a part or all of the transport motor is covered by the first path forming portion, the operating sound of the transport motor is less likely to leak from the top surface of the device. Incidentally, this aspect is not limited to the seventh aspect, but may be subordinate to any of the first to sixth aspects.

[0025] A ninth aspect is an aspect dependent on the eighth aspect, and is characterized in that the discharge motor is arranged in the first direction relative to the recording unit, the discharge motor is arranged at one end relative to the first path forming portion in a width direction that is a direction intersecting the first direction, and the transport motor is arranged at the other end relative to the first path forming portion in the width direction.

[0026] According to this aspect, the reversing motor, the ejection motor, and the transport motor are arranged to be separated from one another, which makes it possible to effectively prevent heat generated by the reversing motor, the ejection motor, and the transport motor from adversely affecting the recording unit.

[0027] A tenth aspect is a aspect dependent on any of the first to ninth aspects, and is characterized in that the first path forming portion is formed from a single member having a shape extending in the first direction from a position opposite the recording portion and extending in the second direction from a position opposite the recording portion.

[0028] According to this aspect, the first path forming portion is formed from a single member having a shape extending in the first direction from a position opposite the recording portion and extending in the second direction from a position opposite the recording portion, and therefore, heat generated by the reversing motor arranged below the first path forming portion can be preferably prevented from being transmitted to the recording portion by radiation. Furthermore, the noise generated by the reversing motor can be suitably prevented from leaking from the top surface of the device.

[0029] An eleventh aspect is a aspect dependent on any of the first to ninth aspects, characterized in that the recording unit is composed of a liquid ejection head that records on a medium by ejecting liquid, and the first path forming unit has an opening at a position opposite the recording unit, a cap unit that is arranged inside the opening and is switchable between a state covering the liquid ejection surface of the liquid ejection head and a state separated from the liquid ejection surface, and a shutter that is displaceable between a blocking position that blocks the opening and an opening position that opens the opening, and the shutter supports the medium passing through a position opposite the liquid ejection head when in the blocking position.

[0030] In a configuration in which the first path forming portion has an opening at a position opposite the recording portion and the cap portion is provided inside the opening, air currents containing heat generated by the reversal motor arranged below the first path forming portion are likely to flow toward the liquid ejection surface through the opening, which may adversely affect the liquid ejection accuracy of the liquid ejection head. In addition, there is a risk that operating noise generated by the reversing motor may easily leak out above the device through the opening. According to this aspect, the shutter is displaceable between a blocking position where the opening is blocked and an opening position where the opening is open, and the shutter supports a medium passing through a position facing the liquid ejection head when in the blocking position, so that when recording is performed on the medium, i.e., when heat is generated by the reversing motor, the opening is blocked by the shutter. This makes it possible to prevent airflow containing heat generated by the reversing motor from flowing toward the liquid ejection surface via the opening, and thus to prevent a decrease in liquid ejection accuracy. In addition, it is possible to prevent operating noise generated by the reversing motor from leaking upward through the opening.

[0031] The present invention will be specifically described below. The following describes an inkjet printer 1, which is a recording device that records on a medium such as recording paper. Hereinafter, the inkjet printer 1 will be referred to simply as the printer 1. In the XYZ coordinate system shown in each drawing, the X-axis direction is the width direction of the device, which is the width direction of the medium on which recording is performed. As seen by the operator of the printer 1, the +X direction is the left direction and the -X direction is the right direction. The Y axis direction is the depth direction of the device, and is the direction along the medium transport direction during recording. The -Y direction is the direction from the front of the device to the rear of the device, and is the medium transport direction during recording, and is an example of a first direction. The +Y direction is the direction from the rear of the device to the front of the device, and is an example of a second direction opposite to the first direction. In this embodiment, of the sides that make up the periphery of the printer 1, the side in the +Y direction is the front of the device, and the side in the -Y direction is the rear of the device. The Z-axis direction is the vertical direction, which is the device height direction. The +Z direction is the vertically upward direction, and the -Z direction is the vertically downward direction. In the following description, the direction in which the medium is transported may be referred to as "downstream" and the opposite direction may be referred to as "upstream."

[0032] 1, the printer 1 has an outer shell formed by a housing 30. The housing 30 has a front surface 30a, a right side surface 30b, a left side surface 30c, a top surface 30d, and a rear surface 30e. The front portion of the medium storage cassette 2 is exposed on the front surface 30a. The medium storage cassette 2 is an example of a medium storage section, and is configured to be able to store media before feeding. The medium storage cassette 2 can be removed from the printer 1 by pulling it out in the +Y direction, and can be installed in the printer 1 by pushing it in the -Y direction. In FIG. 1, the symbol Pt indicates the media stored in the medium storage cassette 2.

[0033] A recess 30f is provided on the top surface 30d. The bottom surface of the recess 30f is configured as the discharge tray 29. The discharge tray 29 is formed so as to be inclined upward in the +Y direction. An outlet 30g is provided inside the recess 30f so as to open in the +Y direction. The medium on which recording has been performed is discharged from the outlet 30g in the +Y direction and is supported by the discharge tray 29 and the top surface 30d.

[0034] A waste liquid tray 33, which is an example of a waste liquid storage section, is provided on the top surface 30d. The waste liquid tray 33 is a tray that stores waste ink generated during maintenance of the line head 40, which will be described later, and can be removed from the printer 1 by lifting it up from the top surface 30d in the +Z direction, and can be attached to the printer 1 by dropping it in the -Z direction.

[0035] Next, the medium transport path of the printer 1 will be described with reference to FIG. The printer 1 has a first feeding path R1a, a second feeding path R1b, a reversing path R2, a recording transport path R3, a guide path R4, and a discharge path R5 as medium transport paths for transporting the medium. In FIG. 2, these paths are indicated by two-dot chain lines. The first feeding path R1a is a path from the pick roller 3 at the bottom to the first nip roller 9. The second feeding path R1b is a path from the medium support unit 12 at the top to the first conveying roller pair 15 via the feeding roller 13. The reversing path R2 is a path from the first nip roller 9 to the second nip roller 10. The recording conveying path R3 is a path from the second nip roller 10 to the third conveying roller pair 27. The guide path R4 is a path from the third conveying roller pair 27 to the first nip roller 9 via the fourth conveying roller pair 65. The discharge path R5 is a path from the third conveying roller pair 27 to the discharge port 30g.

[0036] Among these, the transport path R3 during recording is a path facing the line head 40, and guides the medium in the -Y direction, which is an example of the first direction. Note that guiding the medium in the -Y direction does not necessarily mean that the medium transport direction is straight along the -Y direction, but rather means that it includes a -Y direction component. The guide path R4 is a medium transport path located below the recording transport path R3, and guides the medium that has exited from the recording transport path R3 in the +Y direction, which is an example of the second direction. Note that guiding the medium in the +Y direction does not necessarily mean that the medium transport direction is straight along the +Y direction, but rather means that it includes a +Y direction component. The reversing path R2 is a medium transport path that connects with the guide path R4, and turns the medium over to join the recording transport path R3. The discharge path R5 is located downstream of the recording transport path R3, and is a path for discharging the medium on which recording has been performed from a discharge port 30g.

[0037] A more detailed explanation is given below. The printer 1 is provided with the above-mentioned medium storage cassette 2 at the bottom of the device. A pick roller 3 is provided on the upper part of the medium storage cassette 2. The pick roller 3 can advance and retreat with respect to the medium Pt stored in the medium storage cassette 2, and rotates in contact with the medium Pt stored in the medium storage cassette 2 to send the medium out of the medium storage cassette 2 in the +Y direction.

[0038] A rotationally driven feed roller 5 and a separation roller 6 to which a rotational torque is applied by a torque limiter (not shown) are provided downstream of the pick roller 3. The medium sent out from the medium storage cassette 2 is nipped between the feed roller 5 and the separation roller 6, whereby the medium is separated and sent further downstream.

[0039] A reversing roller 8 that is driven to rotate is provided downstream of the feeding roller 5 and the separation roller 6. A first nip roller 9, a second nip roller 10, and a third nip roller 11 are provided around the reversing roller 8. Each nip roller is a roller that can be rotated by being driven. The medium is nipped between the reversing roller 8 and the first nip roller 9, and is further nipped between the reversing roller 8 and the second nip roller 10 and transported. The medium is reversed by the reversing roller 8 and transported downstream. In this embodiment, the reversing roller 8 is a large diameter roller whose outer periphery forms the inside of the reversing path R2, but is not limited to this. The outside and inside of the reversing path R2 may be formed by a path forming member, and the reversing roller 8 may be a small diameter roller arranged opposite each nip roller.

[0040] A first transport roller pair 15 including a first drive roller 16 that is driven to rotate and a first driven roller 17 that is rotatable by the first drive roller 16 is provided downstream of the reversing roller 8. The first drive roller 16 is one of the transport rollers provided on the transport path R3 during recording, and is an example of a first transport roller. The medium is transported by a first transport roller pair 15 to a position facing the line head 40 . Incidentally, the printer 1 is capable of feeding a medium from the medium storage cassette 2, i.e., feeding using the first feeding path R1a, as well as feeding a medium from the medium support unit 12, i.e., feeding using the second feeding path R1b. The medium support unit 12 supports the medium in an inclined position, and the supported medium is transported by the feeding roller 13 to the first transport roller pair 15. Reference numeral 14 denotes a separation roller to which a rotational torque is applied by a torque limiter (not shown).

[0041] The line head 40 is a liquid ejection head that ejects ink, which is an example of a liquid, onto a medium to record, and is an example of a recording unit. The line head 40 is a liquid ejection head in which a plurality of nozzles 44 that eject ink are arranged to cover the entire area in the width direction of the medium. The line head 40 is long in the width direction of the medium, and is configured as a liquid ejection head that can record over the entire width of the medium without moving in the width direction of the medium. The head surface 42 faces the medium and can also be called a liquid ejection surface or a nozzle surface. The printer 1 includes an ink storage section 47 (see FIG. 8), and the ink ejected from the line head 40 is supplied from the ink storage section 47 to the line head 40 via an ink tube (not shown).

[0042] A second transport roller pair 19 including a second drive roller 20 that is driven to rotate and a second driven roller 21 that can rotate following the second drive roller 20 is provided downstream of the line head 40. The second drive roller 20 is one of the transport rollers provided on the transport path R3 during recording, and is an example of a second transport roller. The medium on which recording has been performed is sent downstream by the second transport roller pair 19.

[0043] Here, the lower surface of the transport path R3 during recording is formed by the first path forming section 51. A part of the upper surface of the transport path R3 during recording upstream of the first transport roller pair 15 is formed by the third path forming section 53, and the medium is guided to the first transport roller pair 15 by the third path forming section 53 and the first path forming section 51. The upper surface of the transport path R3 during recording downstream of the second transport roller pair 19 is formed by the fourth path forming section 54, and the medium on which recording has been performed is guided to the third transport roller pair 27 by the fourth path forming section 54 and the first path forming section 51. Incidentally, the first path forming portion 51, the third path forming portion 53, and the fourth path forming portion 54 may each be formed of one member or a plurality of members.

[0044] A shutter 46 is provided at a position facing the line head 40 on the recording transport path R3. The shutter 46 can slide along the Y-axis direction to take a blocking position (FIGS. 2 and 4) facing the head surface 42 and an open position (FIGS. 5 and 6) retracted from the position facing the head surface 42. When in the blocking position, the shutter 46 supports the medium, thereby defining a gap between the medium and the head surface 42. Hereinafter, the gap between the shutter 46 and the head surface 42 may be referred to as a platen gap. The line head 40 is provided so as to be movable toward and away from the shutter 46, i.e., in the direction of adjusting the platen gap. In this embodiment, the direction of adjusting the platen gap is parallel to the Z-axis direction. Hereinafter, movement of the line head 40 in the +Z-axis direction may be referred to as "rising," and movement in the -Z direction may be referred to as "descending."

[0045] A cap unit 38 is provided below the shutter 46. The cap unit 38 includes a cap portion 39 (see FIGS. 4 to 6). The cap portion 39 is switchable between a state in which it covers the head surface 42 and a state in which it is spaced apart from the head surface 42. The operations of the shutter 46 and the cap unit 38 will be described later.

[0046] In FIG. 2, a flap 22 is provided downstream of the recording transport path R3. The flap 22 is provided so as to be swingable around a swing shaft 22a by a power source (not shown), such as a motor or a solenoid. When the -Y direction tip of the flap 22 descends, the medium transported along the recording transport path R3 is sent to the discharge path R5. When the -Y direction tip of the flap 22 ascends, the medium transported in reverse along the discharge path R5 can be sent to the guide path R4. The flap 22 is not limited to being driven by a power source, and may be biased by a spring so as to maintain a posture in which the -Y direction tip is raised. In this case, the tip of the medium proceeding downstream from the recording transport path R3 pushes aside the flap 22 and enters the discharge path R5.

[0047] In this embodiment, the ejection path R5 is a path for curving the medium so that the side on which recording has been performed faces inward, inverting it, and ejecting it from the ejection port 30g. When recording is performed on both sides of the medium, curving the side on which recording has been performed faces inward means curving the medium so that the side on which recording has been performed last faces inward. At the same time, the ejection path R5 is also a path for switching back the medium in order to feed the medium to the guide path R4. The discharge path R5 is provided with a third transport roller pair 27 including a third drive roller 27a that is driven to rotate and a third driven roller 27b that is rotatable by the third drive roller 27a. The third drive roller 27a is one of the discharge rollers provided on the discharge path R5 and is an example of a first discharge roller. Further, a fifth conveying roller pair 28 including a rotationally driven fifth driving roller 28a and a driven fifth roller 28b is provided downstream of the third conveying roller pair 27 on the discharge path R5. The fifth driving roller 28a is one of the discharge rollers provided on the discharge path R5 and is an example of a second discharge roller.

[0048] When the third transport roller pair 27 and the fifth transport roller pair 28 rotate forward, the medium is discharged from the discharge port 30g. After the rear end of the medium passes the third transport roller pair 27, when the third transport roller pair 27 and the fifth transport roller pair 28 rotate in the reverse direction while the leading end of the flap 22 in the -Y direction is raised, the end that was the rear end of the medium becomes the leading end, and the medium is sent into the guide path R4.

[0049] The guide path R4 is provided with a fourth transport roller pair 65 including a fourth drive roller 66 that is driven to rotate and a fourth driven roller 67 that is rotatable in response to the rotation of the fourth drive roller 66. The fourth drive roller 66 is an example of a guide roller provided on the guide path R4. The medium sent into guide path R4 is guided between reversing roller 8 and third nip roller 11 by fourth transport roller pair 65, and is sent into reversing path R2 by reversing roller 8 and third nip roller 11.

[0050] Reference numeral 52 denotes a second path forming portion that forms the upper surface of the guide path R4, and reference numeral 55 denotes a fifth path forming portion that forms the lower surface of the guide path R4. The second path forming portion 52 has its -Y direction end facing the flap 22, and slopes downward from its -Y direction end toward the +Y direction, then extends horizontally toward the +Y direction, before slopes upward so that its +Y direction end faces the reversing roller 8. The fifth path forming portion 55 has its -Y direction end facing the third drive roller 27a, and slopes downward from its -Y direction end toward the +Y direction, then extends horizontally toward the +Y direction, after which it slopes upward so that its +Y direction end faces the third nip roller 11. The second path forming portion 52 and the fifth path forming portion 55 may be formed of one member or a plurality of members.

[0051] Next, a control system including a motor provided in the printer 1 will be described with reference to FIG. The control unit 80 includes a CPU, non-volatile memory, and the like (not shown), and executes various control programs stored in the non-volatile memory to perform various controls of the printer 1. The control unit 80 also controls multiple motors that the printer 1 is equipped with. The reversing motor 81 controlled by the control unit 80 is a power source for the pick roller 3, the feed roller 5, the reversing roller 8, and the feed roller 13. The reversing motor 81 transmits power to the pick roller 3 via a power transmission unit m1a. Unless otherwise specified, the power transmission unit m1a and other power transmission units described later can be configured with known power transmission means such as gears and drive belts. The reversing motor 81 also transmits power to the feed roller 5 via a power transmission unit m1b. The reversing motor 81 also transmits power to the reversing roller 8 via a power transmission unit m2. The reversing motor 81 also transmits power to the feed roller 13 via a power transmission unit m3.

[0052] The transport motor 82 controlled by the control unit 80 is the power source for the first drive roller 16 , the second drive roller 20 , and the fourth drive roller 66 . The transport motor 82 transmits power to the first drive roller 16 via a power transmission unit m4. The transport motor 82 also transmits power to the second drive roller 20 via a power transmission unit m5. The transport motor 82 also transmits power to the fourth drive roller 66 via a power transmission unit m6.

[0053] The discharge motor 83 controlled by the control unit 80 is a power source for the third drive roller 27a and the fifth drive roller 28a. The discharge motor 83 transmits power to the third drive roller 27a via a power transmission unit m7, and also transmits power to the fifth drive roller 28a via a power transmission unit m8.

[0054] The pump motor 84 controlled by the control unit 80 drives the pump unit 32. The pump unit 32 sends ink from a cap portion 39 (see FIGS. 4 to 6) of the cap unit 38 to the waste liquid tray 33. Therefore, the cap portion 39 and the pump unit 32 are connected by an ink tube (not shown), and the pump unit 32 and the waste liquid tray 33 are also connected by an ink tube (not shown). The pump motor 84 transmits power to the pump unit 32 via a power transmission section m9.

[0055] The head drive motor 85 controlled by the control unit 80 is a power source for raising and lowering the line head 40 in the direction of adjusting the platen gap. The head drive motor 85 raises and lowers the line head 40 via a power transmission unit m10. The power transmission unit m10 can be configured, for example, by a rack and pinion mechanism including a rack (not shown) provided on the line head 40 and a pinion (not shown) that meshes with the rack, and the head drive motor 85 rotates the pinion. A guide frame 31 (see FIG. 2) is disposed in the +Y direction relative to the line head 40, and the line head 40 is guided by the guide frame 31 in the Z-axis direction.

[0056] The shutter drive motor 86 controlled by the control unit 80 is a power source for moving the shutter 46 in the Y-axis direction. The shutter drive motor 86 moves the shutter 46 via a power transmission unit m11. The power transmission unit m11 can be configured, for example, by a rack and pinion mechanism including a rack (not shown) provided on the shutter 46 and a pinion (not shown) that meshes with the rack, and the shutter drive motor 86 rotates the pinion. The power source for the shutter 46 is not limited to the dedicated shutter drive motor 86, and power may be obtained from another motor, for example, the transport motor 82.

[0057] The cap drive motor 87 controlled by the control unit 80 is a power source for raising and lowering the cap unit 38 along the Z-axis direction. The cap drive motor 87 raises and lowers the cap unit 38 via a power transmission unit m12. The power transmission unit m12 can be configured, for example, by a rack and pinion mechanism including a rack (not shown) provided on the cap unit 38 and a pinion (not shown) that meshes with the rack, and the cap drive motor 87 rotates the pinion. The power source for the cap unit 38 is not limited to the dedicated cap drive motor 87, and power may be obtained from another motor, for example, the head drive motor 85.

[0058] The wiper drive motor 88 controlled by the control unit 80 is a power source for moving the wiper unit 36 ​​along the X-axis direction. Here, the wiper unit 36 ​​includes a wiper 37 formed of an elastic material such as rubber as shown in FIG. 8. The wiper unit 36 ​​can move in the X-axis direction by the power of the wiper drive motor 88, and at that time, the wiper 37 wipes the head surface 42 of the line head 40. The wiper unit 36 ​​has a home position at the end in the -X direction. Reference numeral 36-1 denotes the wiper unit 36 ​​moving from the home position toward the end in the +X direction, and reference numeral 37-1 denotes the wiper 37 at that time.

[0059] A circuit board 90 is provided at the home position of the wiper unit 36 ​​(see also FIG. 1). The circuit board 90 constitutes the control unit 80, and is equipped with electronic components such as integrated circuits, capacitors, diodes, and transistors (not shown). This circuit board 90 is provided with an opening 90a, and is configured so that when the wiper unit 36 ​​is located at the home position, the wiper unit 36 ​​is located inside the opening 90a and does not interfere with the wiper unit 36 ​​and the circuit board 90. This configuration makes it possible to reduce the dimension of the printer 1 in the X-axis direction.

[0060] Returning to FIG. 3, the wiper drive motor 88 moves the wiper unit 36 ​​by means of a power transmission unit m13. The power transmission unit m13 is configured to include, for example, a drive pulley (not shown) provided at one end in the X-axis direction, a driven pulley (not shown) provided at the other end, and an endless belt (not shown) that is wound around the drive pulley and the driven pulley. The wiper unit 36 ​​is fixed to a part of the endless belt. The wiper drive motor 88 rotates the drive pulley.

[0061] Of the above motors, the reversing motor 81, the transport motor 82, and the ejection motor 83 are motors involved in transporting the medium, and are the motors that operate for the longest period of time among the multiple motors equipped in the printer 1, and therefore generate the most heat.

[0062] Next, the operation of the shutter 46 and the cap unit 38 will be described with reference to FIGS. In this embodiment, the first path forming portion 51 is formed as a whole from a single member, and has a recess 51d at a position facing the head surface 42 of the line head 40. A cap unit 38 including a cap portion 39 is disposed in the recess 51d. The recess 51d has guide holes 51a extending in the Y-axis direction in a sidewall at the -X direction end and a sidewall at the +X direction end. The shutter 46 has bosses 46a protruding in the -X direction at the -X direction end and spaced apart along the Y-axis direction, and also has bosses 46a protruding in the +X direction at the +X direction end and spaced apart along the Y-axis direction. The bosses 46a fit into the guide holes 51a, so that the shutter 46 is guided in the Y-axis direction by the first path forming portion 51.

[0063] 4 shows a state in which the shutter 46 is in the blocking position and the cap unit 38 is in the lowered position. When recording on the medium, the control unit 80 maintains the shutter 46 and the cap unit 38 in the state shown in FIG. When the head surface 42 is to be covered by the cap portion 39 from this state, the control unit 80 moves the shutter 46 from the shielding position to the open position as shown by the change from Fig. 4 to Fig. 5. Next, the cap unit 38 is raised as shown by the change from Fig. 5 to Fig. 6. When performing maintenance on the line head 40, the control unit 80 sets the shutter 46 and the cap unit 38 to the state shown in FIG. 6 when the power of the apparatus is turned off or in a recording standby state when the power is turned on.

[0064] In this embodiment, the cap unit 38 is raised and lowered to cause the cap portion 39 to cover the head surface 42, but the cap unit 38 may be fixedly provided, and the cap portion 39 may cover the head surface 42 when the line head 40 descends from the recording position. Alternatively, the cap portion 39 may cover the head surface 42 when the line head 40 descends and the cap unit 38 ascends.

[0065] Next, the arrangement of the reversing motor 81, the conveying motor 82, and the ejection motor 83 will be described with reference to FIGS. First, a description will be given of the arrangement of the reversing motor 81. As shown in Fig. 2, the reversing motor 81 is arranged at a position sandwiched between the first path forming portion 51 and the second path forming portion 52. The position sandwiched between the first path forming portion 51 and the second path forming portion 52 can also be rephrased as a position sandwiched between the recording-time transport path R3 and the guide path R4. As a result, the first path forming portion 51 is located between the reversing motor 81 and the line head 40, which can prevent heat generated in the reversing motor 81 from being transmitted to the line head 40 by radiation, and can prevent heat generated by the reversing motor 81 from adversely affecting the line head 40. Hereinafter, this is referred to as a first effect related to the reversing motor 81.

[0066] In addition, since the reversing motor 81 is disposed at a position sandwiched between the first path forming portion 51 and the second path forming portion 52 and is covered by the first path forming portion 51, the operating sound of the reversing motor 81 is less likely to leak from the top surface of the device. Hereinafter, this is referred to as a second effect related to the reversing motor 81. In addition, the heat generated by the reversing motor 81 acts on the guide path R4, thereby increasing the temperature inside the guide path R4 and promoting the drying of the medium onto which the ink has been ejected. Hereinafter, this is referred to as the third effect of the reversing motor 81. It is possible to obtain any one, two, or all of the first, second, and third operational effects related to the reversing motor 81. Furthermore, by disposing the reversing motor 81 at a position sandwiched between the first path forming portion 51 and the second path forming portion 52, it is possible to effectively utilize the space between the recording transport path R3 and the guide path R4, and it is possible to miniaturize the device.

[0067] In this embodiment, the reversing motor 81 drives the pick roller 3 and the feed roller 13 in addition to the reversing roller 8. In this case, the reversing motor 81 is more likely to generate heat, but the above-mentioned first effect can prevent the heat generated by the reversing motor 81 from adversely affecting the line head 40. In this embodiment, the reversing motor 81 also drives the feed roller 5.

[0068] In this embodiment, the reversing roller 8, the pick roller 3, and the feed roller 13 are located in the +Y direction with respect to the line head 40, and the reversing motor 81 is located in the +Y direction with respect to the line head 40. This makes it possible to reduce the distance between the reversing motor 81 and the reversing roller 8, the distance between the reversing motor 81 and the pick roller 3, and the distance between the reversing motor 81 and the feed roller 13. As a result, it is possible to reduce the size of the power transmission unit m2 (see FIG. 3) that transmits power from the reversing motor 81 to the reversing roller 8, the power transmission unit m1a (see FIG. 3) that transmits power from the reversing motor 81 to the pick roller 3, and the power transmission unit m3 (see FIG. 3) that transmits power from the reversing motor 81 to the feed roller 13, which contributes to the miniaturization of the entire device. In this embodiment, the feed roller 5 is also located in the +Y direction with respect to the line head 40. Therefore, the distance between the reversing motor 81 and the feed roller 5 can be reduced, and as a result, the size of the power transmission unit m1b (see FIG. 3) that transmits power from the reversing motor 81 to the feed roller 5 can also be reduced.

[0069] In this embodiment, as shown in Fig. 9, at least the motor body 81a of the reversing motor 81 does not protrude in the X-axis direction, i.e., in the width direction, beyond the first path forming part 51 when viewed in the Z-axis direction, i.e., in the normal direction to the surface of the medium transported through the recording transport path R3. In Fig. 9, the symbol X1 indicates the range in the width direction occupied by the first path forming part 51, and the symbol X2 indicates the range occupied by the motor body 81a. With this configuration, the device dimensions in the width direction can be effectively reduced. The symbol 81b indicates the motor shaft. In addition, since the entire motor main body 81a is covered by the first path forming portion 51, the first effect or the second effect related to the reversing motor 81 can be effectively obtained. In the present embodiment, the reversing motor 81 has the motor body 81a entirely covered by the first path forming part 51, but only a part of the motor body 81a may be covered by the first path forming part 51. In the present embodiment, the motor shaft 81b is partially covered by the first path forming part 51, but only the motor shaft 81b may be entirely covered by the first path forming part 51.

[0070] The reversing motor 81 may be configured to be in contact with the second path forming portion 52. This configuration allows the heat generated by the reversing motor 81 to be effectively transferred to the second path forming portion 52, and the drying of the medium transported through the guide path R4 can be further promoted. In this case, the second path forming portion 52 is formed from a material with good thermal conductivity, such as a metal material, so that the heat generated by the reversing motor 81 can be more effectively transferred to the second path forming portion 52. Furthermore, by forming the second path forming portion 52 from a material with good thermal conductivity, such as a metal material, and at the same time forming the first path forming portion 51 from a material with low thermal conductivity, such as a resin material, the drying of the medium transported through the guide path R4 can be further promoted, and the adverse effect of heat generated by the reversing motor 81 on the line head 40 can be effectively suppressed.

[0071] Next, the arrangement of the discharge motor 83 will be described. The discharge motor 83 is arranged at a position sandwiched between the first path forming portion 51 and the second path forming portion 52 as shown in Fig. 2. This positions the first path forming portion 51 between the discharge motor 83 and the line head 40, making it possible to suppress the heat generated by the discharge motor 83 from being transmitted to the line head 40 by radiation, and to suppress the heat generated by the discharge motor 83 from adversely affecting the line head 40. Hereinafter, this is referred to as a first effect related to the discharge motor 83.

[0072] In addition, the discharge motor 83 is disposed at a position sandwiched between the first path forming portion 51 and the second path forming portion 52, and is covered by the first path forming portion 51, so that the operating sound of the discharge motor 83 is less likely to leak from the top surface of the device. Hereinafter, this is referred to as a second effect related to the discharge motor 83. In addition, the heat generated by the discharge motor 83 acts on the guide path R4, thereby increasing the temperature inside the guide path R4 and promoting the drying of the medium onto which the ink has been ejected. Hereinafter, this is referred to as the third effect of the discharge motor 83. It is possible to obtain any one, two, or all of the first, second, and third operational effects related to the ejection motor 83. Furthermore, by disposing the ejection motor 83 at a position sandwiched between the first path forming portion 51 and the second path forming portion 52, it is possible to effectively utilize the space between the recording transport path R3 and the guide path R4, and it is possible to miniaturize the device.

[0073] In addition, in this embodiment, the discharge path R5 is shaped to invert the medium by curving it so that the surface of the medium on which recording was most recently performed faces inward, and the discharge path R5 is provided with multiple discharge rollers, including a third drive roller 27a as a first discharge roller and a fifth drive roller 28a as a second discharge roller located downstream of the third drive roller 27a. In this manner, when the discharge motor 83 drives multiple drive objects, the discharge motor 83 becomes even more likely to generate heat, but due to the effect of the first aspect of the discharge motor 83 described above, the heat generated by the discharge motor 83 can be prevented from adversely affecting the line head 40.

[0074] Furthermore, the third drive roller 27a and the fifth drive roller 28a are positioned in the -Y direction relative to the line head 40, and the discharge motor 83 is positioned in the -Y direction relative to the line head 40. This makes it possible to reduce the distance between the discharge motor 83 and the third drive roller 27a and the distance between the discharge motor 83 and the fifth drive roller 28a. As a result, it is possible to reduce the size of the power transmission unit m7 (see FIG. 3) that transmits power from the discharge motor 83 to the third drive roller 27a and the power transmission unit m8 (see FIG. 3) that transmits power from the discharge motor 83 to the fifth drive roller 28a, which contributes to the miniaturization of the entire device. However, the discharge motor 83 may be located in the +Y direction relative to the line head 40.

[0075] In this embodiment, as shown in Fig. 9, at least the motor main body 83a of the discharge motor 83 does not protrude in the X-axis direction, i.e., in the width direction, beyond the first path forming portion 51 when viewed in the Z-axis direction, i.e., in the normal direction to the surface of the medium transported along the recording transport path R3. In Fig. 9, the symbol X3 indicates the area occupied by the motor main body 83a. With this configuration, the device dimension in the width direction can be effectively reduced. The symbol 83b indicates the motor shaft. In addition, since the entire motor main body 83a is covered by the first path forming portion 51, the first effect or the second effect related to the discharge motor 83 can be effectively obtained. In the present embodiment, the discharge motor 83 has the motor body 83a entirely covered by the first path forming portion 51, but only a portion of the motor body 83a may be covered by the first path forming portion 51. In the present embodiment, the motor shaft 83b is partially covered by the first path forming portion 51, but only a portion of the motor shaft 83b may be covered by the first path forming portion 51.

[0076] The discharge motor 83 may be configured to be in contact with the second path forming portion 52. This configuration allows the heat generated by the discharge motor 83 to be effectively transferred to the second path forming portion 52, and the drying of the medium transported through the guide path R4 can be further promoted. In this case, the second path forming portion 52 is formed from a material with good thermal conductivity, such as a metal material, so that the heat generated by the discharge motor 83 can be more effectively transferred to the second path forming portion 52. Furthermore, by forming the second path forming portion 52 from a material with good thermal conductivity, such as a metal material, and at the same time forming the first path forming portion 51 from a material with low thermal conductivity, such as a resin material, the drying of the medium transported through the guide path R4 can be further promoted, and the heat generated by the discharge motor 83 can be effectively prevented from adversely affecting the line head 40.

[0077] Next, the arrangement of the feed motor 82 will be described. The feed motor 82 is arranged at a position sandwiched between the first path forming portion 51 and the second path forming portion 52 as shown in Fig. 7. This positions the first path forming portion 51 between the feed motor 82 and the line head 40, making it possible to prevent heat generated by the feed motor 82 from being transmitted to the line head 40 by radiation, and to prevent heat generated by the feed motor 82 from adversely affecting the line head 40. Hereinafter, this is referred to as a first effect related to the feed motor 82.

[0078] In addition, since the conveyor motor 82 is disposed at a position sandwiched between the first path forming portion 51 and the second path forming portion 52 and is covered by the first path forming portion 51, the operating sound of the conveyor motor 82 is less likely to leak from the top surface of the device. Hereinafter, this is referred to as a second effect related to the conveyor motor 82. In addition, the heat generated by the transport motor 82 acts on the guide path R4, thereby increasing the temperature inside the guide path R4 and promoting the drying of the medium onto which the ink has been ejected. Hereinafter, this is referred to as the third effect of the transport motor 82. It is possible to obtain any one, two, or all of the first, second, and third operational effects related to the transport motor 82. Furthermore, by disposing the transport motor 82 at a position sandwiched between the first path forming portion 51 and the second path forming portion 52, it is possible to effectively utilize the space between the recording transport path R3 and the guide path R4, and it is possible to miniaturize the device.

[0079] Further, a plurality of transport rollers are provided in the transport path R3 during recording, and the plurality of transport rollers include a first drive roller 16 serving as a first transport roller located upstream of the line head 40, and a second drive roller 20 serving as a second transport roller located downstream of the line head 40. Furthermore, the transport motor 82 drives a fourth drive roller 66 serving as a guide roller provided in the guide path R4. When the conveyor motor 82 drives multiple drive targets, the conveyor motor 82 is more likely to generate heat, but the effect of the first aspect of the conveyor motor 82 described above can prevent the heat generated by the conveyor motor 82 from adversely affecting the line head 40.

[0080] In this embodiment, the feed motor 82 is located in the −Y direction relative to the line head 40. However, the feed motor 82 may be located in the +Y direction relative to the line head 40.

[0081] 9, the motor main body 82a of the transport motor 82 in this embodiment protrudes slightly in the X-axis direction, i.e., in the width direction, from the first path forming portion 51 when viewed in the Z-axis direction, i.e., in the normal direction to the surface of the medium transported along the transport path R3 during recording. In Fig. 9, the reference symbol X4 indicates the range occupied by the motor main body 82a. Also, the reference symbol 82b indicates the motor shaft. However, at least the motor body 82a may be disposed so as not to protrude in the X-axis direction, i.e., the width direction, beyond the first path forming portion 51. With such a configuration, the device dimension in the width direction can be effectively reduced. In addition, since a portion or all of the motor main body 82a is covered by the first path forming portion 51, the first or second functional effect related to the conveyor motor 82 can be effectively obtained. In this embodiment, the entire motor shaft 82b protrudes from the first path forming portion 51 in the X-axis direction, i.e., the width direction, but a portion of the motor shaft 82b may be covered by the first path forming portion 51, or the entire motor shaft 82b may be covered by the first path forming portion 51.

[0082] The conveyor motor 82 may be configured to be in contact with the second path forming portion 52. This configuration allows the heat generated by the conveyor motor 82 to be effectively transferred to the second path forming portion 52, and the drying of the medium conveyed through the guide path R4 can be further promoted. In this case, the second path forming portion 52 is formed from a material with good thermal conductivity, such as a metal material, so that the heat generated by the conveyor motor 82 can be more effectively transferred to the second path forming portion 52. Furthermore, by forming the second path forming portion 52 from a material with good thermal conductivity, such as a metal material, and at the same time forming the first path forming portion 51 from a material with low thermal conductivity, such as a resin material, the drying of the medium conveyed through the guide path R4 can be further promoted, and the heat generated by the conveyor motor 82 can be effectively prevented from adversely affecting the line head 40.

[0083] Next, the positional relationship between the reversing motor 81, the transport motor 82, and the ejection motor 83 will be described. The reversing motor 81 is located in the +Y direction relative to the line head 40, and the discharging motor 83 is located in the −Y direction relative to the line head 40. With this arrangement, the discharge motor 83 and the reversing motor 81 are arranged on either side of the line head 40, i.e., the discharge motor 83 and the reversing motor 81 are arranged apart from each other. This makes it possible to effectively prevent heat generated by the discharge motor 83 and the reversing motor 81 from adversely affecting the line head 40.

[0084] The reversing motor 81 is located in the +Y direction relative to the line head 40, and the transport motor 82 is located in the −Y direction relative to the line head 40. With this arrangement, the conveyor motor 82 and the reversing motor 81 are arranged with the line head 40 therebetween, that is, the conveyor motor 82 and the reversing motor 81 are arranged apart from each other. This makes it possible to effectively prevent heat generated by the conveyor motor 82 and the reversing motor 81 from adversely affecting the line head 40.

[0085] The discharge motor 83 is arranged at one end, or the +X direction end, of the first path forming section 51 in the width direction, and the conveying motor 82 is arranged at the other end, or the -X direction end, of the first path forming section 51 in the width direction. As a result, the reversing motor 81, the discharge motor 83, and the transport motor 82 are positioned away from each other, which effectively prevents heat generated by the reversing motor 81, the discharge motor 83, and the transport motor 82 from adversely affecting the line head 40.

[0086] In this embodiment, the pump motor 84 and the pump unit 32 are disposed above the recording transport path R3 and directly below the waste liquid tray 33 as shown in FIG. 2, but the pump motor 84 and the pump unit 32 may be disposed in a position sandwiched between the first path forming portion 51 and the second path forming portion 52. 10, the pump motor 84 and the pump unit 32 are disposed at a position sandwiched between the first path formation portion 51 and the second path formation portion 52. The pump motor 84 and the pump unit 32 are disposed in the +Y direction with respect to the line head 40. In addition, the pair of the pump motor 84 and the pump unit 32 is disposed at a position separated from the reversing motor 81 in the width direction as shown in FIG. In FIG. 11, reference symbol X6 denotes an area occupied by the pump unit 32 in the width direction, and reference symbol X7 denotes an area occupied by the pump motor 84.

[0087] As a result, the first path formation part 51 is located between the pump motor 84 and the line head 40, which can prevent the heat generated in the pump motor 84 from being transmitted to the line head 40 by radiation and can prevent the heat generated by the pump motor 84 from adversely affecting the line head 40. Hereinafter, this is referred to as a first effect related to the pump motor 84. In addition, since the pump motor 84 is disposed at a position sandwiched between the first path forming portion 51 and the second path forming portion 52 and is covered by the first path forming portion 51, the operating sound of the pump motor 84 is less likely to leak from the upper surface of the device. Hereinafter, this is referred to as a second effect related to the pump motor 84. In addition, the heat generated by the pump motor 84 acts on the guide path R4, thereby increasing the temperature inside the guide path R4 and promoting the drying of the medium onto which the ink is ejected. Hereinafter, this is referred to as the third effect of the pump motor 84.

[0088] At least one of the first, second and third operational effects can be obtained with respect to the pump motor 84. Furthermore, by disposing the pump motor 84 at a position sandwiched between the first path forming portion 51 and the second path forming portion 52, the space between the recording-time transport path R3 and the guide path R4 can be effectively utilized, and the device can be made more compact. In addition, since the reversing motor 81, the discharge motor 83, the transport motor 82, and the pump motor 84 are arranged apart from each other, it is possible to effectively prevent heat generated by the reversing motor 81, the discharge motor 83, the transport motor 82, and the pump motor 84 from adversely affecting the line head 40.

[0089] Next, the first path forming portion 51 will be further described. In this embodiment, the first path forming part 51 is formed of a single member having a shape extending in the -Y direction from a position facing the line head 40 and extending in the +Y direction from a position facing the line head 40. This makes it possible to suitably prevent heat generated in each motor arranged below the first path forming part 51 from being transmitted to the line head 40 by radiation. In addition, it is also possible to suitably prevent noise generated by the reversing motor 81 from leaking from the top surface of the device.

[0090] Furthermore, the first path forming part 51 may be an opening part instead of the recess 51d for disposing the cap unit 38. The first path forming part 51A shown in Fig. 12 has an opening part 51e at a position facing the line head 40. The cap unit 38 is disposed inside the opening part 51e. In such a configuration, airflow containing heat generated by each of the motors arranged below the first path formation portion 51A is likely to flow toward the head surface 42 through the opening 51e, which may adversely affect the ink ejection accuracy of the line head 40. In addition, there is a risk that operating sounds generated by the motors may easily leak out to the upper part of the device through the opening 51e. However, when recording on the medium, that is, when heat is generated by the reversing motor 81, the transport motor 82, and the ejection motor 83, the opening 51e is closed by the shutter 46. This makes it possible to prevent airflow containing heat generated by the reversing motor 81, the transport motor 82, and the ejection motor 83 from heading toward the head surface 42 via the opening 51e, and thus makes it possible to prevent a decrease in ink ejection accuracy. In addition, it is possible to prevent operating noise generated by each of the motors from leaking upward through the opening.

[0091] Next, the arrangement of the waste liquid tray 33, the pump motor 84, and the pump unit 32 will be described. 2 and 7, a guide frame 31 that guides the line head 40 in the Z-axis direction is provided in the +Y direction with respect to the line head 40. The guide frame 31 is a frame that forms a surface parallel to the XZ plane, and is made of a metal material. The waste liquid tray 33, the pump motor 84, and the pump unit 32 are arranged in the +Y direction relative to the guide frame 31.

[0092] The pump motor 84 is disposed below the waste liquid tray 33. As a result, heat generated by the pump motor 84 is transferred to the waste liquid tray 33 by radiation and convection, and drying inside the waste liquid tray 33 can be promoted without using a separate component such as a heat sink, thereby suppressing an increase in the cost of the device. By promoting drying inside the waste liquid tray 33, the amount of waste liquid that can be stored in the waste liquid tray 33 can be increased. In this embodiment, the pump motor 84 is disposed directly below the waste liquid tray 33 and in a position facing the bottom surface of the waste liquid tray 33 . 9, reference symbol X5 denotes an area in the width direction occupied by the waste liquid tray 33, and reference symbol X7 denotes an area in the width direction occupied by the pump motor 84. As shown in the figure, the pump motor 84 does not protrude in the width direction from the waste liquid tray 33 when viewed from the Z axis direction. In addition, the pump motor 84 does not protrude in the Y axis direction from the waste liquid tray 33 when viewed from the Z axis direction. However, a part of the pump motor 84 may protrude from the waste liquid tray 33 in the width direction, or in the Y-axis direction.

[0093] The pump unit 32 is disposed alongside the pump motor 84 below the waste liquid tray 33. This allows the power transmission section m9 (see FIG. 3) that transmits power from the pump motor 84 to the pump unit 32 to be made compact. 9, the symbol X6 denotes an area in the width direction that is occupied by the pump unit 32. As shown in the figure, the pump unit 32 does not protrude in the width direction from the waste liquid tray 33 when viewed in the Z axis direction. In addition, the pump unit 32 does not protrude in the Y axis direction from the waste liquid tray 33 when viewed in the Z axis direction. However, a part of the pump unit 32 may protrude from the waste liquid tray 33 in the width direction or in the Y-axis direction. Also, the waste liquid tray 33 and the pump unit 32 do not have to overlap when viewed from the Z-axis direction.

[0094] In addition, the guide frame 31 separates the pump motor 84 from the line head 40. This makes it possible to prevent heat generated by the pump motor 84 from adversely affecting the line head 40.

[0095] 1 and 8, a circuit board 90 is provided on the side of the waste liquid tray 33. The circuit board 90 is a heat source, and is configured so that heat generated on the circuit board 90 is transferred to the waste liquid tray 33 by radiation and convection. Therefore, drying inside the waste liquid tray 33 can be further promoted without using a separate component such as a heat sink.

[0096] A power supply unit 91, which is a power supply source for the device, is provided at the bottom of the device, facing the circuit board 90. The power supply unit 91 is also a heat source, and is configured so that heat generated by the power supply unit 91 is transferred to the waste liquid tray 33 by convection. This can further promote drying inside the waste liquid tray 33.

[0097] 8, the circuit board 90 and power supply unit 91 are disposed at the end in the -X direction in the device width direction, and the ink containing section 47 is disposed at the end in the +X direction in the device width direction. In other words, the ink containing section 47 is disposed at a distance from the circuit board 90 and power supply unit 91, which are heat sources that generate significant heat. Here, when the ink ejected from the line head 40 is heated, the viscosity of the ink may deviate from the range of suitable viscosity for ejection, which may result in problems such as ejection defects. However, since the ink storage section 47, the circuit board 90, and the power supply unit 91 are located apart from each other as described above, it is possible to prevent the above-mentioned ejection defects and other problems from occurring.

[0098] The pump motor 84 may be in contact with the lower surface of the waste liquid tray 33. This allows the heat generated by the pump motor 84 to be transferred to the waste liquid tray 33 by conduction in addition to radiation and convection, further accelerating drying inside the waste liquid tray 33.

[0099] Other features of the printer 1 will be described below. 9, the reversing motor 81 and the discharge motor 83 are located at the end in the +X direction in the width direction with respect to the first path forming portion 51. However, one of the reversing motor 81 and the discharge motor 83 may be located at the end in the +X direction with respect to the first path forming portion 51, and the other may be located at the end in the -X direction with respect to the first path forming portion 51. Furthermore, the reversing motor 81 and the discharging motor 83 overlap each other in the width direction. In this specification, when a first component and a second component are said to overlap in a predetermined direction, it means that a part or all of the first component and a part or all of the second component are in the same position in the predetermined direction. In addition, in the following description, the range in which the first component and the second component overlap in the predetermined direction will be omitted from the drawings to avoid cluttering the drawings.

[0100] The reversing motor 81 and the feed roller 13 overlap in the Y-axis direction (see FIGS. 2 and 9). The reversing motor 81 and the pick roller 3 overlap in the Z-axis direction (see FIG. 2). The reversing motor 81 and the circuit board 90 overlap in the Z-axis direction (see FIG. 8). The reversing motor 81 and the medium storage cassette 2 overlap in the Y-axis direction (see FIG. 2), and further overlap in the width direction (see FIG. 8).

[0101] The discharge motor 83 and the pick roller 3 overlap in the Z-axis direction (see FIG. 2). The ejection motor 83 and the circuit board 90 overlap in the Z-axis direction (see FIG. 8). The ejection motor 83 and the medium storage cassette 2 overlap in the Y-axis direction (see FIG. 2), and further overlap in the width direction (see FIG. 8).

[0102] The conveying motor 82 and the pick roller 3 overlap in the Z-axis direction (see FIG. 7). The transport motor 82 and the circuit board 90 overlap in the Z-axis direction (see FIG. 8). The transport motor 82 and the medium storage cassette 2 overlap in the Y-axis direction (see FIG. 7), and further overlap in the width direction (see FIG. 8).

[0103] The pump motor 84 and the first path forming portion 51 overlap in the width direction and also overlap in the Y-axis direction (see FIG. 9). The pump motor 84 and the reversing motor 81 overlap in the width direction and also in the Y-axis direction (see FIG. 9). The pump motor 84 and the feed roller 13 overlap in the Y-axis direction (see FIGS. 2 and 7). The pump motor 84 and the circuit board 90 overlap in the Z-axis direction (see FIG. 8). The pump motor 84 and the medium containing cassette 2 overlap in the Y-axis direction (see FIGS. 2 and 7), and further overlap in the width direction (see FIG. 8). In this embodiment, the pump motor 84 and the reversing roller 8 do not overlap in the Z-axis direction (see FIGS. 2 and 7), but the pump motor 84 and the reversing roller 8 may overlap in the Z-axis direction.

[0104] The waste liquid tray 33 and the feed roller 13 overlap in the Y-axis direction (see FIGS. 2, 7, and 9). The feed roller 13 is located below the waste liquid tray 33. The feed roller 13 is located at the center position in the width direction (see FIG. 9). The waste liquid tray 33 is disposed on the upper surface 30d of the housing 30, that is, on the horizontal surface on the upper surface of the printer 1 (see FIGS. 1, 2, and 7). The waste liquid tray 33 is located in the +Y direction relative to the line head 40. The waste liquid tray 33 and the circuit board 90 overlap in the Z-axis direction (see FIG. 8). The waste liquid tray 33 and the medium containing cassette 2 overlap in the Y-axis direction (see FIG. 7), and further overlap in the width direction (see FIG. 8).

[0105] The present invention is not limited to the embodiments and modifications described above, but various modifications are possible within the scope of the invention described in the claims, and it goes without saying that these modifications are also included in the scope of the present invention. [Explanation of symbols]

[0106] 1...inkjet printer, 2...media storage cassette, 3...pick roller, 5...feed roller, 6...separation roller, 8...reversal roller, 9...first nip roller, 10...second nip roller, 11...third nip roller, 12...media support section, 13...feed roller, 14...separation roller, 15...first conveyor roller pair, 16...first drive roller, 17...first driven roller, 19...second conveyor roller pair, 20...second drive roller , 21... second driven roller, 22... flap, 22a... swing shaft, 27... third transport roller pair, 27a... third drive roller, 27b... third driven roller, 28... fifth transport roller pair, 28a... fifth drive roller, 28b... fifth driven roller, 29... discharge tray, 30... housing, 30a... front, 30b... right side, 30c... left side, 30d... top, 30e... rear, 30f... recess, 30g... discharge port, 31... guide frame, 32... port pump unit, 33...waste liquid tray, 36...wiper unit, 37...wiper, 38...cap unit, 39...cap portion, 40...line head, 42...head surface, 44...nozzle, 46...shutter, 46a...boss, 47...ink storage portion, 51...first path forming portion, 51a...guide hole, 51b...upstream end, 51c...downstream end, 51d...recess, 51e...opening, 52...second path forming portion, 53...third path forming portion, 54...fourth path forming section, 55...fifth path forming section, 56...sixth path forming section, 57...seventh path forming section, 65...fourth conveying roller pair, 66...fourth driving roller, 67...fourth driven roller, 80...control section, 81...reversing motor, 81a...motor main body, 81b...motor shaft, 82...conveying motor, 82a...motor main body, 82b...motor shaft, 83...discharge motor, 83a...motor main body, 83b...motor shaft, 84...pump motor, 85...head drive motor, 86...shutter drive motor, 87...cap drive motor, 88...wiper drive motor, 90...circuit board, 90a...opening, 91...power supply unit, R1a...first feed path, R1b...second feed path, R2...reversal path, R3...transport path during recording, R4...guiding path, R5...ejection path

Claims

1. a recording unit that records on a medium transported in a first direction; a recording transport path which is a medium transport path facing the recording unit; a guide path that is a medium transport path located below the recording transport path and that guides the medium that has exited from the recording transport path in a second direction opposite to the first direction; a medium transport path connected to the guide path, the medium being transported in a reverse direction so that the medium is transported in a reverse direction to be transported in a reverse direction to be transported in a recording mode; a reversing roller disposed in the reversing path and configured to feed the medium downstream of the reversing path; A reversing motor that drives the reversing roller; a first path forming portion that forms a lower surface of the recording transport path; A second path forming portion that forms an upper surface of the guide path; Equipped with The reversing motor is disposed at a position sandwiched between the first path forming portion and the second path forming portion. A recording device comprising:

2. 2. The recording apparatus according to claim 1, a medium storage section located below the inversion path and configured to store the medium before feeding; A pick roller that feeds the medium from the medium storage unit; Equipped with The medium fed from the medium storage unit is fed into the inversion path, The pick roller is driven by the reversing motor. A recording device comprising:

3. 3. The recording apparatus according to claim 2, a medium support section that is located on the recording transport path and supports the medium before it is fed; a feed roller that feeds the medium from the medium support unit; Equipped with The medium fed from the medium support unit is fed into the recording transport path, The feed roller is driven by the reversing motor. A recording device comprising:

4. 4. The recording apparatus according to claim 3, the reversing roller, the pick roller, and the feed roller are located in the second direction with respect to the recording unit, the reversing motor is positioned in the second direction relative to the recording unit; A recording device comprising:

5. 2. The recording apparatus according to claim 1, the reversing motor is configured such that at least a motor main body portion does not protrude beyond the first path forming portion in a width direction that is a direction intersecting with the first direction when viewed from a normal direction to a surface of the medium transported through the transport path during recording; A recording device comprising:

6. 2. The recording apparatus according to claim 1, The reversing motor contacts the second path forming portion. A recording device comprising:

7. 5. The recording apparatus according to claim 4, a discharge path located downstream of the recording transport path for discharging a medium on which recording has been performed; an ejection roller disposed in the ejection path and configured to feed the medium downstream of the ejection path; A discharge motor that drives the discharge roller; Equipped with the ejection motor is disposed at a position sandwiched between the first path forming portion and the second path forming portion and in the first direction with respect to the recording portion. A recording device comprising:

8. 8. The recording apparatus according to claim 7, a transport roller that is disposed on the transport path during recording and transports the medium downstream of the transport path during recording; A conveying motor that drives the conveying roller; Equipped with the conveyor motor is disposed at a position sandwiched between the first path forming portion and the second path forming portion, A recording device comprising:

9. 9. The recording apparatus according to claim 8, the ejection motor is disposed in the first direction relative to the recording unit, the discharge motor is disposed at one end of the first path forming portion in a width direction that is a direction intersecting the first direction, and the transport motor is disposed at the other end of the first path forming portion in the width direction. A recording device comprising:

10. 10. The recording apparatus according to claim 1, the first path forming portion is formed of a single member having a shape extending in the first direction from a position facing the recording portion and extending in the second direction from a position facing the recording portion; A recording device comprising:

11. 10. The recording apparatus according to claim 1, the recording unit is composed of a liquid ejection head that ejects liquid to perform recording on a medium, the first path formation portion has an opening portion at a position facing the recording portion, a cap portion that is disposed inside the opening and is switchable between a state in which the cap portion covers the liquid ejection surface of the liquid ejection head and a state in which the cap portion is spaced apart from the liquid ejection surface; a shutter that is displaceable between a blocking position for blocking the opening and an opening position for opening the opening, the shutter supporting a medium passing through a position facing the liquid ejection head when the shutter is in the blocking position; Equipped with A recording device comprising:

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