Recording device

Abstract

To solve a problem that, in a conventional recording device capable of removing jammed media when opening an opening / closing part, there was room for improvement in terms of usability.SOLUTION: A recording device includes a door part that opens and closes a side surface of a device body, and that opens a part of a conveyance path when opened and forms a part of the conveyance path when closed. The door part includes: a first path forming part that forms a part of the conveyance path; a first roller pair that nips and conveys a medium; and a second roller pair located below the first roller pair and that nips and conveys the medium. The first roller pair and the second roller pair maintain a nip state when the door part is opened and closed, and when the door part is opened, at least a part of a path portion between the first roller pair and the second roller pair in the conveyance path is opened. A path length between the first roller pair and the second roller pair is shorter than a length in a conveyance direction of a medium of a minimum recordable size.SELECTED DRAWING: Figure 11

Description

[Technical field]

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

[0002] In recording devices such as inkjet printers, an opening / closing section for opening the medium transport path is sometimes provided, as shown in Patent Document 1. When the opening / closing section is opened, the medium transport path is opened, and the clogged medium can be removed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-091921 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional configuration as described above, the jammed medium can be removed when the opening and closing part is opened, but this is the extent of it, and there is room for improvement in terms of usability. [Means for solving the problem]

[0005] In order to solve the above problem, the recording device of the present invention comprises a device main body having a transport path for transporting a medium and a recording unit that records on the medium on the transport path, and a door portion that opens and closes a side of the device main body, the door portion opening to open a part of the transport path and forming a part of the transport path by closing, the door portion having a first path forming portion that forms a part of the transport path, a first roller pair that nips and transports the medium, and a second roller pair that is located below or above the first roller pair and nips and transports the medium, the first roller pair and the second roller pair maintain a nipped state when the door portion is opened and closed, when the door portion is opened, at least a part of the path portion between the first roller pair and the second roller pair on the transport path is opened, and the path length between the first roller pair and the second roller pair is shorter than the transport direction length of a medium of the smallest size that can be recorded. [Brief description of the drawings]

[0006] [Figure 1] FIG. 2 is a diagram showing a media transport path of the printer. [Diagram 2] FIG. 2 is an external perspective view of the printer with the door section closed. [Diagram 3] FIG. 2 is an external perspective view of the printer with the door open. [Figure 4] FIG. 4 is a perspective view of the support unit in a closed state. [Diagram 5] FIG. [Figure 6] FIG. 13 is a perspective view of an operation unit for unlocking the support unit. [Figure 7] FIG. 4 is a perspective view of a first portion provided on the support unit. [Figure 8] 4 is a perspective view of a contact portion and a pressing portion provided on the door portion. FIG. [Figure 9] FIG. [Figure 10] 4A and 4B are diagrams showing each route formation portion that forms a guide route, a switchback route, and a reverse route. [Figure 11] 4A and 4B are diagrams showing each route formation portion that forms a guide route, a switchback route, and a reverse route. [Figure 12] FIG. 4 is a cross-sectional view of the first member, the second member, and the flap. [Figure 13] FIG. 4 is a perspective view of a first member, a second member, and a flap. [Figure 14] An enlarged view of part A in Figure 13. [Figure 15] Enlarged view of part B in Figure 13. [Figure 16] Enlarged view of part C in Figure 13. [Figure 17] FIG. [Figure 18] FIG. 4 is a perspective view of a portion where the first member and the second member engage with each other. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] The present invention will now be briefly described. A recording device according to a first aspect comprises a device main body having a transport path for transporting a medium and a recording unit for recording on the medium along the transport path, and a door portion for opening and closing a side of the device main body, the door portion opening to open a portion of the transport path and forming a portion of the transport path by closing, the door portion having a first path forming portion forming a portion of the transport path, a first roller pair nipping and transporting the medium, and a second roller pair located below or above the first roller pair and nipping and transporting the medium, the first roller pair and the second roller pair maintaining a nipped state when the door portion is opened and closed, and when the door portion is opened, at least a portion of the path portion between the first roller pair and the second roller pair in the transport path is opened, and the path length between the first roller pair and the second roller pair is shorter than the transport direction length of a medium of the smallest size that can be recorded.

[0008] According to this aspect, the first roller pair and the second roller pair maintain a nipped state when the door portion is opened and closed, and the path length between the first roller pair and the second roller pair is shorter than the transport direction length of a medium of the smallest size that can be recorded, so that the medium is nipped by at least one of the first roller pair and the second roller pair when the door portion is opened, thereby preventing the medium from falling unintentionally. Here, if the entire path portion between the first roller pair and the second roller pair in the transport path remains closed when the door is opened, the visibility of the jammed medium decreases and the jammed medium becomes difficult to remove. However, according to this aspect, when the door is opened, at least a portion of the path portion between the first roller pair and the second roller pair in the transport path is opened, improving the visibility of the jammed medium and making it easier to remove the jammed medium. This improves the usability of the recording device. In addition, when the term "at least a part" is used in this specification, it can mean either a part or the whole.

[0009] A second aspect is an aspect dependent on the first aspect, characterized in that the device body has a support portion provided at a position opposite the recording portion and capable of supporting a medium to be recorded by the recording portion, the support portion has a second path forming portion at a position opposite the first path forming portion and forming a part of the transport path, and by opening the door portion, the space between the first path forming portion and the second path forming portion is opened.

[0010] According to this aspect, by opening the door, the gap between the first path forming portion and the second path forming portion is opened, so that the medium stuck between the first path forming portion and the second path forming portion can be removed, thereby improving the usability of the recording device.

[0011] A third aspect is an aspect dependent on the second aspect, characterized in that the door portion has a third path forming portion that forms part of the conveying path at a position different from the first path forming portion, and a fourth path forming portion that faces at least a portion of the third path forming portion and forms part of the conveying path, and the first roller pair is arranged in a part of the conveying path formed by the third path forming portion and the fourth path forming portion.

[0012] According to this aspect, in a configuration in which the first roller pair is disposed in a part of the conveying path formed by the third path forming portion and the fourth path forming portion, the effect of the first aspect described above can be obtained.

[0013] A fourth aspect is an aspect dependent on the third aspect, and is characterized in that a path length of a portion of the conveying path formed by the third path forming portion and the fourth path forming portion is shorter than a path length of a portion of the conveying path formed by the first path forming portion and the second path forming portion that is opened by opening the door portion.

[0014] A part of the transport path formed by the third path forming portion and the fourth path forming portion is a section that is not opened even when the door portion is opened. According to this aspect, the path length of the section that is not opened even when the door is opened is shorter than the path length of the section that is opened when the door is opened, so that it is possible to ensure visibility of jammed media while preventing the media from falling when the door is opened, and as a result, it is possible to improve the usability of the recording device.

[0015] A fifth aspect is an aspect dependent on the third aspect, and is characterized in that a path length of a portion of the transport path formed by the third path forming portion and the fourth path forming portion is shorter than a transport direction length of a medium of a smallest size that can be recorded.

[0016] According to this aspect, since the path length of the section that is not opened even when the door is opened is shorter than the transport direction length of the smallest recordable size medium, the medium that is jammed between the third path forming portion and the fourth path forming portion can be visually confirmed and removed regardless of the transport direction length of the medium, and as a result, the usability of the recording device can be improved. Incidentally, this aspect is not limited to the above-mentioned third aspect, and may be subordinate to the above-mentioned fourth aspect.

[0017] A sixth aspect is an aspect dependent on the third aspect, and is characterized in that the transport path includes a switchback path for switchback transporting the medium that has passed between the recording unit and the support unit, a guide path that guides the medium that has passed between the recording unit and the support unit to the switchback path, and a reversal path that is connected to the switchback path and reverses the medium, and the fourth path forming portion forms at least a portion of the guide path and at least a portion of the reversal path, and the first path forming portion and the second path forming portion form at least a portion of the reversal path downstream of the third path forming portion in the transport direction.

[0018] According to this aspect, since the fourth path forming portion forms at least a part of the guide path and at least a part of the reverse path, the device can be downsized by using common members, which makes the recording device easier to handle and improves the usability of the recording device. Incidentally, this aspect is not limited to the above-mentioned third aspect, and may be subordinate to the above-mentioned fourth or fifth aspect.

[0019] A seventh aspect is a dependent aspect of the sixth aspect, and is characterized in that the fourth path forming portion comprises a first member and a second member connected to the first member, and a static electricity removal brush that removes static electricity from a medium is provided in a state sandwiched between the first member and the second member. According to this aspect, since the static electricity removal brush that removes static electricity from the medium is provided in a state where it is sandwiched between the first member and the second member, the static electricity removal brush can be easily assembled and provided.

[0020] An eighth aspect is an aspect dependent on the sixth aspect, and further includes a switching unit switchable between a state in which the medium is guided from the guide path to the switchback path and a state in which the medium is guided from the switchback path to the reverse path, and the fourth path forming portion has a plurality of support shaft portions along a medium width direction intersecting with a medium transport direction, the switching portion includes a first engagement portion that engages with the support shaft portions to restrict movement of the switching portion in a first direction in which the medium abuts against the switching portion, and a second engagement portion that engages with the support shaft portions to restrict movement of the switching portion in a second direction opposite to the first direction, and the switching portion rotatably engages with the support shaft portion by sandwiching the support shaft portion between the first engagement portion and the second engagement portion, and the first engagement portion and the second engagement portion are provided in plurality along the medium width direction, and the number of the second engagement portions is less than the number of the first engagement portions.

[0021] If the number of the second engagement portions is the same as the number of the first engagement portions, the workability when engaging the switching portion with the support shaft portion will decrease, and there is a risk that the frictional resistance will increase when the switching portion is fitted into the support shaft portion, making it difficult to ensure smooth oscillation of the switching portion. However, according to the present embodiment, since the number of the second engagement portions is smaller than the number of the first engagement portions, it is possible to suppress a decrease in workability when engaging the switching portion with the support shaft portion, and it is also possible to suppress an increase in frictional resistance when the switching portion is fitted into the support shaft portion. In addition, there is a risk that the switching portion will deform in the first direction when the medium hits the switching portion, but since there are more first engagement portions than second engagement portions, the deformation can be effectively suppressed. Incidentally, this aspect is not limited to the sixth aspect, and may be subordinate to the seventh aspect.

[0022] A ninth aspect is an aspect dependent on the sixth aspect, and includes a switching unit switchable between a state in which the medium is guided from the guide path to the switchback path and a state in which the medium is guided from the switchback path to the reverse path, the fourth path forming unit has a plurality of support shaft portions that rotatably support the switching unit along a medium width direction that intersects with a medium transport direction, the switching unit has a first engagement portion that engages with the support shaft portions to restrict movement of the switching unit in a first direction in which the medium abuts against the switching unit, and and a second engagement portion that engages with the support shaft portion to restrict movement of the switching portion in a second direction opposite to the first direction, and the switching portion is rotatably engaged with the support shaft portion by sandwiching the support shaft portion between the first engagement portion and the second engagement portion, and the first engagement portion and the second engagement portion are provided in multiple locations along the medium width direction, the first engagement portion being provided at the center and both ends of the switching portion in the medium width direction, and the second engagement portion being provided at both ends of the switching portion in the medium width direction.

[0023] If the number of the second engagement portions is the same as the number of the first engagement portions, the workability when engaging the switching portion with the support shaft portion will decrease, and there is a risk that the frictional resistance will increase when the switching portion is fitted into the support shaft portion, making it difficult to ensure smooth oscillation of the switching portion. However, according to the present embodiment, since the number of the second engagement portions is smaller than the number of the first engagement portions, it is possible to suppress a decrease in workability when engaging the switching portion with the support shaft portion, and it is also possible to suppress an increase in frictional resistance when the switching portion is fitted into the support shaft portion. In addition, there is a risk that the switching portion will deform in the first direction when the medium hits the switching portion, but since the first engagement portion is provided at the center and both ends of the switching portion in the medium width direction, the deformation can be suppressed. Incidentally, this aspect is not limited to the sixth aspect, and may be subordinate to the seventh aspect.

[0024] A tenth aspect is a aspect dependent on any of the second to ninth aspects, characterized in that the support portion is switchable by rotating between a first state in which it can support a medium to be recorded by the recording portion and a second state in which it is retracted from the recording portion from the first state, further comprising an operating portion for releasing the state in which the support portion is maintained in the first state, and the second path forming portion comprises a guide portion for guiding a user's finger to the operating portion.

[0025] According to this aspect, by switching the support unit from the first state to the second state, when a medium becomes clogged at a position facing the recording unit, the medium can be easily removed. In addition, since the second path forming portion includes a guide portion that guides the user's finger to the operation portion, usability is improved. In addition, there is no need to provide the guide portion on a dedicated member, and an increase in the cost of the device can be suppressed.

[0026] An eleventh aspect is a dependent aspect of the tenth aspect, and is characterized in that the support portion has a conveyor belt for conveying a medium, and the conveyor belt conveys the medium in a direction intersecting the horizontal and vertical directions. According to this aspect, since the transport belt transports the medium in a direction intersecting the horizontal and vertical directions, the recording device can be made smaller in size in both the horizontal and vertical directions. Furthermore, since the support portion is rotatable, access to the conveyor belt is improved, and usability is improved.

[0027] A twelfth aspect is a aspect dependent on any one of the second to ninth aspects, characterized in that the support portion has a conveyor belt that conveys the medium. According to this aspect, in a configuration in which the support section has a transport belt that transports a medium, the effects of any one of the first to ninth aspects described above can be obtained.

[0028] A thirteenth aspect is a dependent aspect of the twelfth aspect, characterized in that the support portion has a cleaning portion that cleans the conveyor belt, and the support portion has a cleaning portion that cleans the conveyor belt, and when viewed in a direction intersecting the outer surface of the door portion, the conveyor belt and the cleaning portion are within the area of ​​the second path forming portion.

[0029] According to this aspect, since the conveyor belt and the cleaning unit are within the area of ​​the second path forming unit when viewed in a direction intersecting with the outer surface of the door unit, it is possible to prevent a user from accidentally accessing the conveyor belt or the cleaning unit and soiling his / her fingers. In addition, there is no need to provide a dedicated member for covering the conveyor belt or the cleaning unit, which prevents an increase in the cost of the device.

[0030] A fourteenth aspect is a dependent aspect of the thirteenth aspect, characterized in that the cleaning section has a paper powder collection container that collects paper powder from the conveying belt, and when viewed in a direction intersecting with the outer surface of the door section, the second path forming section covers the paper powder collection container.

[0031] According to this aspect, since the second path forming portion covers the paper dust collection container when viewed in a direction intersecting with the outer surface of the door portion, it is possible to prevent a user from inadvertently accessing the paper dust collection container and scattering paper dust when the door portion is opened. In addition, there is no need to provide a dedicated member for covering the paper dust collection container, which prevents an increase in the cost of the device.

[0032] A fifteenth aspect is a aspect dependent on any of the second to ninth aspects, characterized in that the support portion is switchable by rotating between a first state in which it can support a medium to be recorded by the recording portion and a second state in which it is retracted from the recording portion from the first state, and the door portion has an abutment portion that abuts against the support portion when the door portion is closed from a state in which the door portion is open and the support portion is in the second state, thereby switching the support portion to the first state. According to this aspect, even if the door is closed with the support part in the second state, the door switches the support part from the second state to the first state, thereby improving usability.

[0033] A sixteenth aspect is a aspect dependent on any of the second to ninth aspects, characterized in that the support portion is switchable by rotating between a first state in which it can support a medium to be recorded by the recording portion and a second state in which it is retracted from the recording portion from the first state, and the door portion has a pressing portion that presses the support portion toward the first state.

[0034] According to this aspect, the door portion has a pressing portion that presses the support portion toward the first state, so that the support portion can be appropriately maintained in the first state. As a result, the distance between the support portion and the recording portion can be appropriately maintained, and deterioration of recording accuracy can be suppressed.

[0035] A seventeenth aspect is a dependent aspect of the sixteenth aspect, and is characterized in that the door portion has an abutment portion that abuts against the support portion when the door portion is closed from a state in which the door portion is open and the support portion is in the second state, thereby switching the support portion to the first state, and in that, as the door portion is closed, the abutment portion transitions from a state in which the abutment portion abuts against the support portion to a state in which the pressing portion presses the support portion.

[0036] According to this aspect, as the door section is closed, the abutment portion transitions from a state in which it abuts the support portion to a state in which the pressing portion presses the support portion, and therefore, by operating the door section, it is possible to switch the support portion to the second state and to press the support portion with the pressing portion. In addition, the contact portion and the pressing portion can be positioned closer to each other, which allows the device to be made more compact.

[0037] An eighteenth aspect is a aspect dependent on the seventeenth aspect, characterized in that the abutting portion holds the pressing portion. According to this aspect, since the abutment portion holds the pressing portion, the device can be made smaller and costs can be suppressed compared to a configuration in which the pressing portion is held by a dedicated member.

[0038] A 19th aspect is a dependent aspect of the 17th aspect, characterized in that the support portion has a first portion which engages with the abutment portion and the pressing portion, and the door portion has a guide portion which guides the first portion from the pressing portion to the abutment portion when the door portion is opened and the first portion transitions from a state in contact with the pressing portion to a state in contact with the abutment portion.

[0039] In a configuration in which the door part transitions from a state in which the abutment part abuts the first part to a state in which the pressing part presses the first part as the door part closes, there are cases in which the door part is not completely closed and is reopened. In this case, the first part tries to transition from a state in which it is in contact with the pressing part to a state in which it is in contact with the abutment part, but at that time, there is a risk that the first part will get caught on the abutment part. According to this aspect, when the door portion is opened and the first portion transitions from a state in contact with the pressing portion to a state in contact with the abutment portion, the guide portion guides the first portion from the pressing portion to the abutment portion, thereby preventing the above-mentioned snagging. Incidentally, this aspect is not limited to the above-mentioned 17th aspect, and may be subordinate to the above-mentioned 18th aspect.

[0040] A twentieth aspect is a aspect dependent on any of the seventeenth aspects, and is characterized in that the support portion has a conveyor belt for conveying a medium, and the conveyor belt conveys the medium in a direction intersecting the horizontal and vertical directions.

[0041] According to this aspect, since the transport belt transports the medium in a direction intersecting the horizontal and vertical directions, the recording device can be made smaller in size in both the horizontal and vertical directions. Furthermore, since the support portion is rotatable, access to the conveyor belt is improved, and usability is improved. In addition, in a configuration in which the conveyor belt conveys the medium in a direction intersecting the horizontal and vertical directions, the support portion is likely to rotate toward the second state due to its own weight, but the pressing portion can appropriately maintain the support portion in the first state. As a result, the distance between the support portion and the recording portion is appropriately maintained, and deterioration of recording accuracy can be suppressed. Incidentally, this aspect is not limited to the above-mentioned 17th aspect, and may be subordinate to the above-mentioned 18th or 19th aspect.

[0042] The present invention will be specifically described below. In the following, an inkjet printer 1 that performs recording by ejecting ink, which is an example of a liquid, onto a medium such as recording paper will be described as an example of a recording device. In the following, the inkjet printer 1 will be abbreviated to printer 1. Note that the printer 1 can also be considered as a medium transport device from the viewpoint of transporting the medium. In this case, the printer 1 includes the medium transport device and a line head 44, which is an example of a recording unit, which will be described later.

[0043] The XYZ coordinate system shown in each figure is an orthogonal coordinate system, with the Y axis direction being the direction that intersects with the medium transport direction, i.e., the medium width direction, and also the device depth direction. The +Y direction of the Y axis direction is the direction from the front of the device to the rear of the device, and the -Y direction is the direction from the rear of the device to the front of the device. The X-axis direction is the width direction of the device, and as seen by the operator of the printer 1, the +X direction is the left side and the -X direction is the right side. The Z-axis direction is the vertical direction and is the normal direction to the mounting surface G of the printer 1, that is, the height direction of the device. Within the Z-axis direction, the +Z direction is the upward direction, and the -Z direction is the downward direction. In the following, the direction in which the medium is transported may be referred to as "downstream," and the opposite direction may be referred to as "upstream." In addition, the medium transport path is shown by a dashed line in Figure 1. In the printer 1, the medium is transported through the medium transport path shown by the dashed line in Figure 1.

[0044] The F-axis direction is the medium transport direction between a line head 44 and a transport belt 53 (described later), i.e., in the recording area, with the +F direction being the downstream transport direction and the opposite -F direction being the upstream transport direction. The V-axis direction is perpendicular to the F-axis direction.

[0045] 2, the printer 1 is a multifunction device equipped with a scanner unit 7, which is an example of an image reading device, on the top of the device main body 2. However, the scanner unit 7 may be omitted. An operation panel 6 for performing various operation settings is provided on the top of the device main body 2. The side of the printer 1 in the -Y direction on which the operation panel 6 is provided is defined as the device front side. The printer 1 is also configured so that an add-on unit (not shown) can be connected to the bottom of the device main body 2, and is configured so that media can be fed from this add-on unit. However, the add-on unit does not have to be connectable. The printer 1 is provided with a transport path for transporting the medium sent from the add-on unit.

[0046] The device body 2 has a first media cassette 3 that stores media in its lower portion. The symbol P indicates the media stored in the first media cassette 3. A pick roller 21 that sends out the stored media in the -X direction is provided for the first media cassette 3. The medium sent out by the pick roller 21 is sent by a feed roller pair 25 towards a transport roller pair 31. In this specification, unless otherwise specified, a roller pair refers to a pair of rollers that nip and transport a medium between two opposing rollers. In the following, unless otherwise specified, a "roller pair" is defined as consisting of a drive roller that is driven by a drive source (not shown) to apply a feeding force to the medium, and a driven roller that rotates in contact with the drive roller or the medium.

[0047] The medium receiving the feeding force from the transport roller pair 31 is sent between the line head 44, which is an example of a recording head, and the transport belt 53, that is, to a position facing the line head 44. Note that hereinafter, the medium transport path from the transport roller pair 31 to the transport roller pair 32 is referred to as the transport path T1 during recording. The line head 44, which is an example of a recording section, constitutes the head unit 43. The line head 44 performs recording by ejecting ink onto the surface of the medium. The line head 44 is an ink ejection head configured so that the nozzles that eject ink cover the entire area in the width direction of the medium, and is configured as an ink ejection head that can record over the entire width of the medium without moving in the width direction of the medium. However, the ink ejection head is not limited to this, and may be a type that is mounted on a carriage and ejects ink while moving in the width direction of the medium.

[0048] The head unit 43 is provided so as to be capable of moving forward and backward relative to the transport path T1 during recording, and is provided so as to be movable between a recording position where it advances onto the transport path T1 during recording to record on the medium, and a retreat position where it retreats from the transport path T1 during recording. FIG. 1 shows a state in which the head unit 43 is in the recording position, and in this state recording is performed on the medium.

[0049] Reference numerals 10A, 10B, 10C, and 10D denote ink storage units serving as liquid storage units. Ink ejected from the line head 44 is supplied from each ink storage unit to the line head 44 via a tube (not shown). The ink storage units 10A, 10B, 10C, and 10D are detachably provided in the mounting units 11A, 11B, 11C, and 11D, respectively. Reference numeral 12 denotes a waste liquid storage section that stores ink as waste liquid discharged from the line head 44 toward a flushing cap (not shown) for maintenance purposes.

[0050] The conveyor belt 53 is an endless belt that is wound around a drive shaft 51 and a driven shaft 52, and rotates when the drive shaft 51 is driven by a motor (not shown). The medium is conveyed to a position facing the line head 44 while being attracted to the belt surface of the conveyor belt 53. The medium can be attracted to the conveyor belt 53 by a known attraction method such as an air suction method or an electrostatic attraction method.

[0051] Here, the transport path T1 during recording, which passes through a position facing the line head 44, crosses both the horizontal and vertical directions and transports the medium upward. That is, the F-axis direction crosses both the horizontal and vertical directions. Therefore, the ejection surface 44a of the line head 44 that ejects ink is also parallel to the F-axis direction and crosses both the horizontal and vertical directions. In this embodiment, the angle α that the F-axis direction makes with the horizontal direction is 75°. The angle α may be changed to another angle within the range of 0°<α≦90°. For example, the angle α may be set to the range of 45°≦α≦80°. In addition, when the device body 2 is made compact, 60°≦α≦80° is preferable.

[0052] The medium on whose first side recording has been performed by the line head 44 is then conveyed further upward by the conveyor roller pair 32 positioned downstream of the conveyor belt 53 . A flap 41 is provided downstream of the transport roller pair 32, and the transport direction of the medium is switched by this flap 41. When the medium is to be discharged as is, the transport path of the medium is switched by the flap 41 to face the upper transport roller pair 35, and the medium is discharged by the transport roller pair 35 toward the discharge tray 8, which is an example of a medium placement section.

[0053] When recording is to be performed on the second side of the medium in addition to the first side, the medium is guided to the guide path T2 by the flap 41. In this embodiment, the guide path T2 is a medium transport path from the transport roller pair 32 to the flap . The flap 42 is pressed in the counterclockwise direction in FIG. 1 by a pressing member (not shown), and the medium traveling along the guide path T2 pushes aside the flap 42 and enters the switchback path T3. In this embodiment, the switchback path T3 is the media transport path above the flap 42. The switchback path T3 is provided with transport roller pairs 36 and 37. The medium that enters the switchback path T3 is transported upward by the transport roller pairs 36 and 37, and when the lower end of the medium passes the flap 42, the rotation direction of the transport roller pairs 36 and 37 is switched, whereby the medium is transported downward. At this time, the flap 42 guides the medium transported downward so that it heads toward the reversal path T4. The flap 42 is an example of a switching portion that can be switched between a state in which the medium is guided from the guide path T2 to the switchback path T3 and a state in which the medium is guided from the switchback path T3 to the reversing path T4.

[0054] The switchback path T3 is connected to a reversing path T4. In this embodiment, the reversing path T4 is a medium transport path that extends from the position of the flap 42 to the transport roller pair 31 via the transport roller pairs 33, 34, and 38. The medium transported downward from the position of the flap 42 receives a feeding force from the transport roller pairs 33 and 34, reaches the transport roller pair 38, curves and reverses, and is sent to the transport roller pair 31. The transport roller pair 33 is an example of a first roller pair, and the transport roller pair 34 is an example of a second roller pair. However, the transport roller pair 34 may be an example of the first roller pair, and the transport roller pair 33 may be an example of the second roller pair. The medium is again sent to a position facing the line head 44, with the second side opposite the first side on which recording has already been performed facing the line head 44. This makes it possible for the line head 44 to record on the second side of the medium. The supply roller 19 and the separation roller 20 provided near the transport roller pair 38 are a roller pair that feeds the medium from a supply tray not shown in FIG.

[0055] Next, the belt unit 50 and the cleaning section 60 will be described with reference to Fig. 9. The conveyor belt 53 constituting the belt unit 50 is an endless belt having an outer first surface Sa and an inner second surface Sb, and is wound around a drive shaft 51 and a driven shaft 52. The conveyor belt 53 is made of a base material such as urethane or rubber, and contains a conductive material as necessary to adjust the resistance value.

[0056] The drive shaft 51 is driven to rotate by a motor (not shown). When the drive shaft 51 is driven to rotate in the direction of the arrow a, the conveyor belt 53 rotates in the clockwise direction in FIG. 9. Hereinafter, this rotation of the conveyor belt 53 may be referred to as "forward rotation." When the drive shaft 51 is driven to rotate in the direction of the arrow b, the conveyor belt 53 rotates in the counterclockwise direction in FIG. 9. Hereinafter, this rotation of the conveyor belt 53 may be referred to as "reverse rotation."

[0057] A base frame 55 is provided inside the conveyor belt 53. A backup plate 55a is provided on the base frame 55, and a portion of the conveyor belt 53 that faces the line head 44 is supported by the backup plate 55a. A slide frame 56 is supported on the base frame 55 so as to be slidable along the F-axis direction. A driven shaft 52 is supported on the slide frame 56. A pressing member, such as a compression spring (not shown), that presses the slide frame 56 in the +F direction is provided on the base frame 55. This presses the driven shaft 52 in the +F direction, and tension is applied to the conveyor belt 53.

[0058] The conveyor belt 53 is wound around the drive shaft 51 and the driven shaft 52, forming a first section 53a and a second section 53b as flat belt sections. The first section 53a is a section facing the line head 44, and the second section 53b is a section on the opposite side to the first section 53a.

[0059] When the conveyor belt 53 rotates forward, the first section 53a of the conveyor belt 53 moves in the +F direction, and the second section 53b moves in the -F direction. That is, when the conveyor belt 53 rotates forward, in the first section 53a, the -F direction is the upstream of the belt movement direction, and the +F direction is the downstream of the belt movement direction, and in the second section 53b, the +F direction is the upstream of the belt movement direction, and the -F direction is the downstream of the belt movement direction. When the conveyor belt 53 reverses, the first section 53a of the conveyor belt 53 moves in the -F direction, and the second section 53b moves in the +F direction. That is, when the conveyor belt 53 reverses, in the first section 53a, the +F direction is the upstream of the belt movement direction, and the -F direction is the downstream of the belt movement direction, and in the second section 53b, the -F direction is the upstream of the belt movement direction, and the +F direction is the downstream of the belt movement direction.

[0060] Next, a charging roller 49 is provided at a position facing the drive shaft 51 with the conveyor belt 53 interposed therebetween. The charging roller 49 is in contact with a first surface Sa which is the outer surface of the conveyor belt 53, and is rotated in accordance with the rotation of the conveyor belt 53. A DC voltage is applied to the charging roller 49 by a voltage application unit (not shown), so that the charging roller 49 supplies electric charge to the portion in contact with the conveyor belt 53. In this embodiment, the charging roller 49 supplies a positive charge to the transport belt 53, charging the first surface Sa of the transport belt 53 with a positive polarity, so that the first surface Sa of the transport belt 53 becomes an attraction surface that attracts the medium. However, the configuration for transporting the medium by the transport belt 53 is not limited to this electrostatic adsorption type, and other types such as an air suction type may also be used.

[0061] A support roller 54 that comes into contact with the medium is provided upstream of the line head 44. The support roller 54 presses the medium against a portion of the conveyor belt 53 that is wound around the drive shaft 51. The support roller 54 is grounded, which removes electric charges on the recording surface side of the medium.

[0062] Next, a cleaning section 60 is provided at a position facing the second section 53b of the conveyor belt 53. The cleaning section 60 includes a cleaning web 61. The cleaning web 61 is wound around a drive shaft 62, a pressing shaft 63, and a driven shaft 64, and tension is applied to the cleaning web 61 by a tensioner 65.

[0063] In this embodiment, the cleaning web 61 is an endless fabric, and can be pressed against the first surface Sa of the conveyor belt 53 by a pressing shaft 63. The drive shaft 62 is rotationally driven by a sheet drive motor (not shown). The drive shaft 62 is rotationally driven in the clockwise direction in FIG. 9, whereby the cleaning web 61 rotates in the clockwise direction in FIG.

[0064] The cleaning unit 60 includes a rotating frame 67. The above-mentioned drive shaft 62, pressing shaft 63, and driven shaft 64 are provided on the rotating frame 67, and the whole is configured as a unit body. The rotating frame 67 is provided rotatably about a rotating shaft 68 extending in the Y-axis direction, and the pressing shaft 63 advances and retreats relative to the conveyor belt 53 by rotating.

[0065] The rotating frame 67 is pressed in a direction in which the pressing shaft 63 faces the conveyor belt 53 by a pressing member (not shown), for example, a tension spring. The rotating frame 67 can be in a state in which the rotation in the direction in which the rotating frame 67 faces the conveyor belt 53 is restricted by the rotation of a cam (not shown), and in a state in which the restriction is released. In a state in which the cam restricts the rotation of the rotating frame 67, the pressing shaft 63 is separated from the conveyor belt 53, and the cleaning unit 60 is in a non-cleaning state in which the cleaning web 61 is separated from the first surface Sa of the conveyor belt 53. In a state in which the cam releases the restriction, the pressing shaft 63 advances toward the conveyor belt 53, and the cleaning unit 60 is in a cleaning state in which the cleaning web 61 comes into contact with the first surface Sa of the conveyor belt 53.

[0066] In the cleaning state of the cleaning unit 60, the cleaning web 61 is pressed against the conveyor belt 53 by the pressing shaft 63. In this state, the conveyor belt 53 rotates forward and the cleaning web 61 rotates in the clockwise direction in Fig. 9 to clean the first surface Sa of the conveyor belt 53. That is, the cleaning web 61 cleans the first surface Sa by moving relatively to the first surface Sa while being in contact with the first surface Sa of the conveyor belt 53.

[0067] A backup member 57 is provided on the inner side of the conveyor belt 53. The backup member 57 is provided on the base frame 55 on the inner side of the conveyor belt 53. The backup member 57 is provided at a position where the cleaning web 61 abuts against the second surface Sb of the conveyor belt 53 at a position where the cleaning web 61 contacts the first surface Sa of the conveyor belt 53. The backup member 57 nips the conveyor belt 53 and the cleaning web 61 between itself and the pressing shaft 63, and assists the cleaning web 61 in cleaning the first surface Sa. The backup member 57 is provided on the base frame 55 so as to be displaceable in the V-axis direction, and is pressed by a compression spring 58 toward the second surface Sb.

[0068] Next, a paper dust removal wiper 70 is provided in the -F direction relative to the cleaning unit 60. The paper dust removal wiper 70 is formed from a sheet material made of PET (polyethylene terephthalate) as an example, and is disposed in a direction opposite to the forward rotation direction of the conveyor belt 53. The paper dust removal wiper 70 is fixedly provided and is always in contact with the conveyor belt 53 to remove paper dust adhering to the conveyor belt 53. Reference numeral 72 denotes a paper dust collection container for collecting the removed paper dust. Reference numeral 71 denotes a contact sheet for preventing the paper dust adhering to the paper dust removal wiper 70 from moving to the conveyor belt 53 and heading upstream when the conveyor belt 53 is reversed.

[0069] In this embodiment, the cleaning unit 60 is configured to clean the transport belt 53 with the cleaning web 61, but instead of this, or in addition to this, the cleaning unit 60 may be configured to clean the transport belt 53 with a blade.

[0070] Next, the door portion 80 will be described. As shown in Figs. 1 to 3, a door portion 80 which is an openable / closable body is provided on the side surface in the -X direction of the device body 2, that is, on the right side surface. The door unit 80 is rotatably connected to the device body 2 by the hinge portion 45 (see FIG. 3), and opens and closes with respect to the device body 2 by rotating. In this embodiment, the rotation axis of the door unit 80 is parallel to the Z-axis direction. In this embodiment, the door unit 80 is rotatably connected to the device body 2 at the end in the +Y direction, and rotates with the end in the -Y direction as a free end.

[0071] Incidentally, the door section 80 is provided with a locking section (not shown), and this locking section engages with an engaged section (not shown) provided on the device body 2, thereby locking the door section 80 in a closed state relative to the device body 2. This locking section can be unlocked by operating an operating lever 81 (see FIG. 2).

[0072] Between the door section 80 and the device main body 2, a part of the guide path T2, a part of the switchback path T3, and a part of the reversing path T4 are formed. The door section 80 also forms a part of a part of the reversing path T4 inside. By opening the door section 80 as shown in the change from Fig. 2 to Fig. 3, the inside of the device main body 2 is exposed, and as a result, a part of the guide path T2, a part of the switchback path T3, and a part of the reversing path T4 are opened. 3, when the door portion 80 is opened, the first path forming portion 91, the fourth path forming portion 94, and the eighth path forming portion 100 are exposed on the door portion 80 side. When the door portion 80 is opened, the second path forming portion 92, the fifth path forming portion 97, the ninth path forming portion 102, and the tenth path forming portion 103 are exposed on the device body 2 side.

[0073] 10 and 11 show the path forming portions that form each media transport path with hatching. Note that Fig. 10 shows the door portion 80 in a closed state. Fig. 11 shows the path forming portions associated with the door portion 80 shifted in the -X direction from the path forming portions associated with the device body 2 for the sake of convenience in order to clearly show the path forming portions associated with the door portion 80 when the door portion 80 is open. As shown in Figures 10 and 11, the fourth path forming portion 94 forms a part of the guide path T2. The third path forming portion 93 and the fifth path forming portion 97 form a part of the switchback path T3. The first path forming portion 91, the second path forming portion 92, the third path forming portion 93, the fourth path forming portion 94, the sixth path forming portion 98, the seventh path forming portion 99, the eighth path forming portion 100, the ninth path forming portion 102, and the tenth path forming portion 103 each form a part of the reverse path T4. The fourth path forming portion 94 includes a first member 95 and a second member 96.

[0074] Of the above-mentioned path forming portions, the first path forming portion 91, the third path forming portion 93, the fourth path forming portion 94, the sixth path forming portion 98, the seventh path forming portion 99, and the eighth path forming portion 100 are provided in the door portion 80. Further, the second path forming portion 92, the fifth path forming portion 97, the ninth path forming portion 102, and the tenth path forming portion 103 are provided in the apparatus body 2. In particular, the second path forming portion 92 is provided in the belt unit 50. In this embodiment, each of the path forming portions is made of a resin material.

[0075] The door section 80 includes the -X direction rollers of the transport roller pairs 36, 37, the transport roller pairs 33, 34, the supply roller 19, the separation roller 20, and the +Z direction roller of the transport roller pair 38. When the door section 80 is opened, the nips of the transport roller pairs 36, 37, 38 are released as shown in FIG. By opening the door 80 as described above, if a jam occurs in the guide path T2, the switchback path T3, or the reverse path T4, the jammed medium can be removed.

[0076] When the door 80 is opened, the belt unit 50, which is an example of a support portion, is exposed as shown in Figs. 4 and 5. The belt unit 50 is formed by assembling various members to a unit body 50a. The unit body 50a is rotatable about a drive shaft 51 as a rotation axis. The belt unit 50 can be switched between a first state (Fig. 4) in which the belt unit 50 can support a medium to be recorded by the line head 44 by rotating, and a second state (Fig. 5) in which the belt unit 50 is retracted from the line head 44 from the first state. By switching the belt unit 50 to the second state, if a jam occurs in the recording transport path T1, the jammed medium can be removed.

[0077] The belt unit 50 is provided with a second path forming part 92. In Figures 4 and 5, reference numeral 75 denotes a screw that fixes the second path forming part 92 to the unit main body 50a. By removing the screw 75, the second path forming part 92 can be removed from the unit main body 50a, which allows access to the above-mentioned cleaning unit 60 and, for example, allows the paper powder collection container 72 to be attached and detached.

[0078] In the second path forming portion 92, a recess 92a is formed in the -Y direction as shown in an enlarged view in Fig. 6. The bottom of the recess 92a is formed as a concave guide surface 92b. An operation portion 76 for releasing the lock of the belt unit 50 held, i.e., locked, in the first state is provided above the recess 92a. The belt unit 50 has a locking mechanism (not shown) for locking the first state, and the above lock can be released by hooking the operation portion 76 from below and pulling it in the -X direction, and the belt unit 50 can be switched from the first state to the second state.

[0079] The guide surface 92b serving as a guide formed in the second path forming portion 92 improves usability by guiding the user's finger to the operation portion 76. In addition, since the guide surface 92b is provided in the second path forming portion 92, it is not necessary to provide the guide surface 92b on a dedicated member, and an increase in the cost of the device can be suppressed.

[0080] 4 and 5, in the belt unit 50, a first portion 110 is provided in the +Y direction with respect to the second path forming portion 92. The first portion 110 has a supported surface 110a. The door portion 80 is provided with a contact portion 83. The contact portion 83 is also provided with a pressing portion 84. The pressing portion 84 presses the first portion 110 (supported surface 110a) of the belt unit 50 when the door portion 80 is in the closed state. The pressing direction is the direction in which the belt unit 50 takes the first state, i.e., the closing direction.

[0081] The pressing portion 84 is provided so as to be displaceable in a direction toward and away from the belt unit 50, and is pressed toward the belt unit 50 by a pressing member (not shown), for example, a spring. By using such pressing portion 84, the first state of the belt unit 50 is appropriately maintained when the door portion 80 is closed. The pressing portion 84 presses the belt unit 50 in the first state, i.e., in the closing direction, at the end of the belt unit 50 in the +Y direction in the Y axis direction. A similar pressing portion 84 is also provided at the end of the belt unit 50 in the -Y direction, but is not shown in the figure. Moreover, at the −Y direction end and the +Y direction end of the belt unit 50 in the Y axis direction, the above-mentioned locking mechanism holds the belt unit 50 in the first state.

[0082] Here, there may be a case where the door portion 80 is closed while the belt unit 50 is in the second state, that is, the open state. The abutment portion 83 provided on the door portion 80 functions in this case. The contact portion 83 has a contact surface 83a, and when the door portion 80 is closed with the belt unit 50 in the second state, i.e., the open state, the contact surface 83a comes into contact with the corner portion 110b of the first portion 110. When the door portion 80 is further closed from that state, the contact surface 83a presses the first portion 110, causing the belt unit 50 to rotate in the closing direction.

[0083] The solid arrows in Fig. 8 indicate the path along which the first portion 110 moves on the contact surface 83a when the door portion 80 is closed. The arrows in Fig. 7 indicate the change in the position at which the first portion 110 contacts the contact surface 83a and the pressing portion 84 when the door portion 80 is closed. 8, when the door part 80 is closed, the first part 110 moves upward from the bottom on the contact surface 83a, moves from the contact surface 83a to the pressing part 84, and is pressed by the pressing part 84. That is, when the door part 80 is closed, the belt unit 50 is also closed and switched to the first state. If the door part 80 is opened again before it is completely closed, the first part 110 will move on the contact surface 83a in the opposite direction to the path shown in Fig. 8. If the door part 80 is opened again before it is completely closed, the position of the first part 110 that comes into contact with the contact surface 83a and the pressing part 84 will move in the opposite direction to the change shown in Fig. 7.

[0084] In this way, the door section 80 has the abutment section 83 that switches the belt unit 50 to the first state by abutting against the belt unit 50 when the door section 80 is closed from a state in which the door section 80 is open and the belt unit 50 is in the second state. As a result, even if the door section 80 is closed with the belt unit 50 in the second state, the door section 80 switches the belt unit 50 from the second state to the first state, improving usability.

[0085] The door portion 80 also has a pressing portion 84 that presses the belt unit 50 toward the second state. This makes it possible to properly maintain the first state of the belt unit 50. As a result, the distance between the belt unit 50 and the line head 44 is properly maintained, and deterioration of recording accuracy can be suppressed.

[0086] As the door 80 is closed, the state transitions from one in which the contact portion 83 contacts the belt unit 50 to one in which the pressing portion 84 presses the belt unit 50. In this manner, by performing the operation of closing the door 80, the belt unit 50 can be switched to the second state and the pressing portion 84 can press the belt unit 50. In addition, the contact portion 83 and the pressing portion 84 can be positioned closer to each other, which allows the device to be made more compact.

[0087] In the present embodiment, the contact portion 83 holds the pressing portion 84. This allows the device to be made smaller in size and prevents costs from increasing, compared to a configuration in which the pressing portion 84 is held by a dedicated member.

[0088] Here, when door portion 80 is about to be closed, it may not be completely closed and may be opened again. In this case, first portion 110 attempts to transition from a state in contact with pressing portion 84 to a state in contact with abutting portion 83, and at this time, there is a risk that first portion 110 may get caught on abutting portion 83. Specifically, this is the case when first portion 110 attempts to transition from a state in contact with pressing portion 84 to a state in contact with abutting portion 83, as shown by the dashed arrow in FIG. 8. However, the contact portion 83 according to this embodiment has a guide portion 83b. When the door portion 80 is opened and the first portion 110 transitions from a state in which it is in contact with the pressing portion 84 to a state in which it is in contact with the contact portion 83, the guide portion 83b guides the first portion 110 from the pressing portion 84 to the contact portion 83. This makes it possible to prevent the above-mentioned getting caught.

[0089] As described above, the belt unit 50 has the conveyor belt 53, which conveys the medium in the +F direction, i.e., in a direction intersecting the horizontal and vertical directions. In this configuration in which the conveyor belt 53 conveys the medium in a direction intersecting the horizontal and vertical directions, the belt unit 50 is likely to rotate toward the second state due to its own weight, but the pressing portion 84 can appropriately maintain the belt unit 50 in the first state. As a result, the distance between the belt unit 50 and the line head 44 is appropriately maintained, and a decrease in recording accuracy can be suppressed.

[0090] Next, each of the path forming parts described with reference to Figs. 10 and 11 will be further described. As described above, the door section 80 has the first path forming portion 91 that forms part of the reversing path T4, the transport roller pair 33, and the transport roller pair 34 located below the transport roller pair 33. Since the two opposing rollers of the transport roller pair 33 and the transport roller pair 34 are both provided in the door section 80, a nipped state is maintained when the door section 80 is opened or closed as shown in FIG. 11, when the door portion 80 is opened, at least a part of the path portion between the transport roller pair 33 and the transport roller pair 34 in the reversing path T4 is opened. In this embodiment, the range of the path length L1 is opened. The path length L0 between the transport roller pair 33 and the transport roller pair 34 is shorter than the length in the transport direction of a medium of the smallest recordable size.

[0091] As described above, the transport roller pairs 33 and 34 maintain a nipped state when the door section 80 is opened or closed, and since the path length L0 between the transport roller pairs 33 and 34 is shorter than the transport direction length of the smallest recordable size of media, the media is nipped by at least one of the transport roller pairs 33 and 34, thereby preventing the media from unintentionally falling when the door section 80 is opened. Here, if the entire path portion between the transport roller pair 33 and the transport roller pair 34 in the reversing path T4 remains closed when the door section 80 is opened, the visibility of the jammed medium decreases and the jammed medium becomes difficult to remove. However, according to the present embodiment, when the door section 80 is opened, at least a portion of the path portion between the transport roller pair 33 and the transport roller pair 34 in the reversing path T4 is opened, improving the visibility of the jammed medium and making it easier to remove the jammed medium. As a result, the usability of the printer 1 can be improved.

[0092] The belt unit 50 also includes a second path forming portion 92 that forms part of the reverse path T4 at a position opposite the first path forming portion 91. By opening the door 80, the gap between the first path forming portion 91 and the second path forming portion 92 is opened. This makes it possible to remove media that has become clogged between the first path forming portion 91 and the second path forming portion 92. As a result, the usability of the printer 1 can be improved.

[0093] The door portion 80 also has a third path forming portion 93 that forms a part of the reversing path T4 at a position different from the first path forming portion 91, and a fourth path forming portion 94 that forms a part of the conveying path and is at least partially opposed to the third path forming portion 93. The conveying roller pair 33 is disposed in a part of the reversing path T4 formed by the third path forming portion 93 and the fourth path forming portion 94. That is, one roller constituting the transport roller pair 33 is provided in the third path forming portion 93, and the other roller is provided in the fourth path forming portion 94. Furthermore, the door section 80 has a third path forming section 93 that forms part of the reversing path T4, and a sixth path forming section 98 that faces at least a portion of the third path forming section 93 and forms part of the conveying path, at a position different from the first path forming section 91. The conveying roller pair 34 is disposed in a part of the reversing path T4 that is formed by the third path forming section 93 and the sixth path forming section 98. That is, one roller that constitutes the conveying roller pair 34 is provided in the third path forming section 93, and the other roller is provided in the sixth path forming section 98.

[0094] Furthermore, the path length L2 of the part of the reversing path T4 formed by the third path forming portion 93 and the fourth path forming portion 94 is shorter than the path length L1 of the part of the reversing path T4 formed by the first path forming portion 91 and the second path forming portion 92 that is opened by opening the door portion 80. This provides the following advantageous effects. A part of the reversal path T4 formed by the third path forming portion 93 and the fourth path forming portion 94 is a section that is not opened even when the door portion 80 is opened. In this embodiment, the path length L2 of the section that is not opened even when the door unit 80 is opened is shorter than the path length L1 of the section that is opened when the door unit 80 is opened, so it is possible to ensure visibility of jammed media while preventing media from falling when the door unit 80 is opened, and as a result, it is possible to improve the usability of the device.

[0095] Furthermore, in this embodiment, the path length L2 of a portion of the reversing path T4 formed by the third path forming portion 93 and the fourth path forming portion 94 is shorter than the transport direction length of a medium of the smallest recordable size. This makes it possible to visually confirm and remove a medium that is jammed between the third path forming portion 93 and the fourth path forming portion 94, regardless of the transport direction length of the medium. As a result, the usability of the printer 1 can be improved.

[0096] In addition, in this embodiment, a portion of the reversal path T4 formed by the sixth path forming portion 98, the seventh path forming portion 99, and the eighth path forming portion 100 in the door portion 80 is also a section that is not opened even when the door portion 80 is opened, as described above. In this embodiment, the path length L3 of this section is shorter than the path length L1 of the section that is opened by opening the door unit 80. This makes it possible to ensure visibility of jammed media while preventing media from falling when the door unit 80 is opened. As a result, the usability of the device can be improved. In addition, since the section in which the medium is curved and turned over, i.e., the section formed by the eighth path forming section 100, is divided as shown in FIG. 11, if a jam occurs in the section in which the medium is curved and turned over, the jam can be easily cleared. In addition, path length L3 is also shorter than the length in the transport direction of the smallest recordable size of medium. This makes it possible to visually confirm and remove a medium that is jammed in the section of path length L3, regardless of the length in the transport direction of the medium. As a result, the usability of the printer 1 can be improved.

[0097] The medium transport path of the printer 1 also includes a switchback path T3 for switchback transport of the medium that has passed between the line head 44 and the belt unit 50, a guide path T2 that guides the medium that has passed between the line head 44 and the belt unit 50 to the switchback path T3, and a reversal path T4 that connects to the switchback path T3 and reverses the medium. The fourth path forming unit 94 forms at least a portion of the guide path T2 and at least a portion of the reversal path T4. The first path forming unit 91 and the second path forming unit 92 form at least a portion of the reversal path T4 downstream of the third path forming unit 93 in the transport direction. Because the fourth path forming portion 94 forms at least a part of the guide path T2 and at least a part of the reverse path T4, the device can be made more compact by standardizing the components. As a result, the printer 1 becomes easier to handle, and the usability of the printer 1 can be improved.

[0098] Next, the fourth path formation portion 94 will be described in detail. 12 and 13, the fourth path forming portion 94 includes a first member 95 and a second member 96 connected to the first member 95. The second member 96 is fixed to the first member 95 by screws 89 at both ends in the medium width direction. The first member 95 includes path forming ribs 95a at appropriate intervals along the medium width direction, and the path forming ribs 95a form the guide path T2. 17, the second member 96 is formed with a plate-like portion 96b that protrudes downward. The first member 95 is formed with an insertion portion 95b into which the plate-like portion 96b can be inserted downward. By inserting the plate-like portion 96b into the insertion portion 95b, the second member 96 is restricted from moving in the X-axis direction relative to the first member 95 at the center in the medium width direction. A guide rib 96c is formed on the plate-shaped portion 96b. The guide rib 96c guides the medium so that the leading end of the medium transported along the reversing path T4 does not get caught on the second member 96 when the plate-shaped portion 96b is inserted into the insertion portion 95b as shown in Fig. 18. In this manner, by guiding the medium by the guide rib 96c provided on the plate-shaped portion 96b that restricts the movement of the second member 96, the medium can be transported stably without complicating the configuration.

[0099] 12 and 13 , a static elimination brush 46, which is an example of a static elimination unit that eliminates static electricity from the medium in the guide path T2, is provided in the fourth path formation portion 94. The static elimination brush 46 is provided in a state where it is sandwiched between a first member 95 and a second member 96. 12, the base 46a of the static electricity removal brush 46 can be fixed to an attachment surface 95c formed on the first member 95 by double-sided tape, an adhesive, or the like. When the second member 96 is fixed to the first member 95 with the base 46a of the static electricity removal brush 46 fixed to the attachment surface 95c, the static electricity removal brush 46 is sandwiched between a clamping portion 95d of the first member 95 and a clamping portion 96d of the second member 96. Since the charge-eliminating brush 46 is provided in a state where it is sandwiched between the first member 95 and the second member 96 in this manner, the charge-eliminating brush 46 can be easily assembled. Furthermore, it is also possible to omit fixing the base 46a of the static electricity removal brush 46 to the attachment surface 95c formed on the first member 95 using double-sided tape or adhesive, and to fix the static electricity removal brush 46 by clamping it between the clamping portion 95d of the first member 95 and the clamping portion 96d of the second member 96. Moreover, the base portion 46a of the static electricity removal brush 46 may be fixed to the second member 96 with double-sided tape or an adhesive, and then sandwiched between the first member 95 and the second member 96.

[0100] Next, the attachment structure of the flap 42 to the second member 96 will be described. 13 to 16, a plurality of support shafts 96a are provided at intervals along the medium width direction on the upper portion of the second member 96. The support shafts 96a serve as pivot axes for the flap . The flap 42 has a first engagement portion 42a and a second engagement portion 42b that are engageable with the support shaft portion 96a. The support shaft portion 96a is sandwiched between the first engagement portion 42a and the second engagement portion 42b, whereby the flap 42 is rotatably engaged with the support shaft portion 96a.

[0101] A plurality of first engagement portions 42a and second engagement portions 42b are provided along the medium width direction. At both ends in the medium width direction, as shown in Figures 14 and 16, a first engagement portion 42a and a second engagement portion 42b are provided, and the support shaft portion 96a is sandwiched between the first engagement portion 42a and the second engagement portion 42b. The first engagement portion 42a is formed in a concave shape so as to receive the support shaft portion 96a. The first engagement portion 42a restricts movement of the flap 42 in a first direction in which the medium strikes the flap 42, which is the -X direction in this embodiment. The second engagement portion 42b restricts movement of the flap 42 in a second direction opposite to the first direction, which is the +X direction in this embodiment. 12 and 15, no second engagement portions 42b are provided in the center in the medium width direction. That is, the number of second engagement portions 42b is smaller than the number of first engagement portions 42a.

[0102] Here, if the number of second engagement portions 42b is the same as the number of first engagement portions 42a, the workability when engaging the flap 42 with the support shaft portion 96a will decrease, and there is a risk that the frictional resistance will increase when the flap 42 is fitted onto the support shaft portion 96a, making it difficult to ensure smooth swinging of the flap 42. However, in this embodiment, the number of second engagement portions 42b is less than the number of first engagement portions 42a, thereby preventing a decrease in workability when engaging the flap 42 with the support shaft portion 96a, and also preventing an increase in frictional resistance when the flap 42 is fitted into the support shaft portion 96a.

[0103] In addition, there is a risk that the flap 42 will deform in the -X direction when the medium hits the flap 42, but since the first engagement portion 42a is provided at the center and both ends of the flap 42 in the medium width direction, such deformation can be suppressed.

[0104] In this embodiment, the transport belt 53 transports the medium in the +F direction, that is, a direction intersecting the horizontal and vertical directions, which allows the printer 1 to be made smaller in both the horizontal and vertical directions. Furthermore, since the belt unit 50 is rotatable, access to the conveyor belt 53 is improved, and usability is improved.

[0105] In this embodiment, the belt unit 50 has a cleaning section 60 that cleans the conveyor belt 53. When viewed in a direction intersecting with the outer surface of the door section 80, i.e., when viewed in the direction of arrow T1 in Fig. 9, the conveyor belt 53 and the cleaning section 60 are within the area of ​​the second path forming section 92. This makes it possible to prevent the user from accidentally accessing the conveyor belt 53 or the cleaning section 60 and soiling their fingers. In addition, there is no need to provide a dedicated member for covering the conveyor belt 53 or the cleaning section 60, which makes it possible to prevent an increase in the cost of the device.

[0106] The cleaning unit 60 also has a paper powder collection container 72 that collects paper powder from the conveyor belt 53. When viewed in a direction intersecting the outer surface of the door unit 80, i.e., when viewed in the direction of arrow T1 in Fig. 9, the second path forming portion 92 covers the paper powder collection container 72. This makes it possible to prevent the user from inadvertently accessing the paper powder collection container 72 and scattering paper powder when the door unit 80 is opened. In addition, there is no need to provide a dedicated member for covering the paper powder collection container 72, which makes it possible to prevent an increase in the cost of the device.

[0107] 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]

[0108] 1...inkjet printer, 2...device body, 3...first media cassette, 6...operation panel, 7...scanner unit, 8...output tray, 10A, 10B, 10C, 10D...ink storage section, 11A, 11B, 11C, 11D...mounting section, 12...waste liquid storage section, 19...supply roller, 20...separation roller, 21...pick roller, 25...feed roller pair, 31, 32, 33, 34, 35, 36, 37, 38...transport roller pair, 41...flap, 42...flap, 42a...first engagement joint portion, 42b...second engagement portion, 43...head unit, 44...line head, 45...hinge portion, 46...static charge brush, 46a...base portion, 49...charging roller, 50...belt unit, 50a...unit body, 51...driving shaft, 52...driven shaft, 53...conveyor belt, 53a...first section, 53b...second section, 54...support roller, 55...base frame, 55a...backup plate, 56...slide frame, 57...backup member, 58...compression spring, 60...cleaning portion , 61... cleaning web, 62... drive shaft, 63... pressing shaft, 64... driven shaft, 65... tensioner, 67... rotating frame, 68... rotating shaft, 70... paper dust removal wiper, 71... contact sheet, 72... paper dust collection container, 75... screw, 76... operation portion, 80... door portion, 81... operation lever, 83... abutment portion, 83a... abutment surface, 83b... guide portion, 84... pressing portion, 89... screw, 91... first path forming portion, 92... second path forming portion, 92a... recess, 92b... guide surface, 93... third path forming portion, 94... fourth path forming portion Path forming portion, 95...first member, 95a...path forming rib, 95b...insertion portion, 95c...attachment surface, 95d...clamping portion, 96...second member, 96a...support shaft portion, 96b...plate-shaped portion, 96c...guide rib, 96d...clamping portion, 97...fifth path forming portion, 98...sixth path forming portion, 99...seventh path forming portion, 100...eighth path forming portion, 102...ninth path forming portion, 103...tenth path forming portion, 110...first portion, 110a...supported surface, 110b...corner portion, 111...pressed portion, 111a...pressed surface, T1: Recording transport path, T2: Guidance path, T3: Switchback path, T4: Reversal path

Claims

1. an apparatus body including a transport path for transporting a medium and a recording unit for recording on the medium along the transport path; a door portion that opens and closes a side surface of the device body, the door portion opening a part of the transport path when opened and forming a part of the transport path when closed; Equipped with The door portion is A first path forming portion that forms a part of the transport path; a first roller pair that nips and transports the medium; a second roller pair located below or above the first roller pair and nipping and transporting the medium; having The first roller pair and the second roller pair maintain a nip state when opening and closing the door portion, When the door portion is opened, at least a part of a path portion between the first roller pair and the second roller pair in the conveying path is opened, a path length between the first roller pair and the second roller pair is shorter than a length in a transport direction of a medium of a minimum size that can be recorded; A recording apparatus comprising:

2. 2. The recording apparatus according to claim 1, the device body has a support part that is provided at a position facing the recording part and is capable of supporting a medium on which data is recorded by the recording part; the support portion includes a second path forming portion that forms a part of the transport path at a position opposite to the first path forming portion, By opening the door portion, the first path forming portion and the second path forming portion are opened. A recording apparatus comprising:

3. 3. The recording apparatus according to claim 2, The door portion is a third path forming portion that forms a part of the conveying path at a position different from the first path forming portion; a fourth path forming portion that faces at least a portion of the third path forming portion and forms a part of the conveying path; having the first roller pair is disposed in a part of the transport path formed by the third path forming portion and the fourth path forming portion; A recording apparatus comprising:

4. 4. The recording apparatus according to claim 3, a path length of a portion of the conveying path formed by the third path forming portion and the fourth path forming portion is shorter than a path length of a portion of the conveying path formed by the first path forming portion and the second path forming portion that is opened by opening the door portion; A recording apparatus comprising:

5. 4. The recording apparatus according to claim 3, a path length of a portion of the transport path formed by the third path formation portion and the fourth path formation portion is shorter than a length in a transport direction of a medium of a minimum recordable size; A recording apparatus comprising:

6. 4. The recording apparatus according to claim 3, The transport path is a switchback path for switchback-transporting the medium that has passed between the recording unit and the support unit; a guide path that guides the medium that has passed between the recording unit and the support unit to the switchback path; a reversing path connected to the switchback path and reversing the medium; having The fourth path formation portion forms at least a part of the guide path and at least a part of the reverse path, The first path forming portion and the second path forming portion form at least a part of the reversing path downstream of the third path forming portion in a conveying direction. A recording apparatus comprising:

7. 7. The recording apparatus according to claim 6, The fourth path formation portion is A first member; a second member connected to the first member; Equipped with a static elimination brush that eliminates static electricity from a medium is provided in a state sandwiched between the first member and the second member; A recording apparatus comprising:

8. 7. The recording apparatus according to claim 6, a switching unit that can switch between a state in which the medium is guided from the guide path to the switchback path and a state in which the medium is guided from the switchback path to the reverse path, the fourth path forming portion has a plurality of support shaft portions that rotatably support the switching portion along a medium width direction that intersects with a medium transport direction, The switching unit is a first engagement portion that engages with the support shaft portion to restrict movement of the switching portion in a first direction in which the medium strikes the switching portion; a second engagement portion that engages with the support shaft portion to restrict movement of the switching portion in a second direction opposite to the first direction; Equipped with the support shaft portion is sandwiched between the first engagement portion and the second engagement portion, whereby the switching portion is rotatably engaged with the support shaft portion, the first engaging portion and the second engaging portion are provided in a plurality of portions along the medium width direction, The number of the second engagement portions is less than the number of the first engagement portions. A recording apparatus comprising:

9. 7. The recording apparatus according to claim 6, a switching unit that is switchable between a state in which the medium is guided from the guide path to the switchback path and a state in which the medium is guided from the switchback path to the reverse path, the fourth path forming portion has a plurality of support shaft portions that rotatably support the switching portion along a medium width direction that intersects with a medium transport direction, The switching unit is a first engagement portion that engages with the support shaft portion to restrict movement of the switching portion in a first direction in which the medium strikes the switching portion; a second engagement portion that engages with the support shaft portion to restrict movement of the switching portion in a second direction opposite to the first direction; Equipped with the support shaft portion is sandwiched between the first engagement portion and the second engagement portion, whereby the switching portion is rotatably engaged with the support shaft portion, the first engaging portion and the second engaging portion are provided in a plurality of portions along the medium width direction, the first engagement portion is provided at a center and both ends of the switching portion in the medium width direction, the second engagement portion is provided on both ends of the switching portion in the medium width direction, A recording device comprising:

10. 10. The recording apparatus according to claim 2, the support unit is switchable between a first state in which the support unit can support a medium to be recorded by the recording unit and a second state in which the support unit is retracted from the recording unit from the first state by rotating; An operation unit for releasing the state in which the support unit is held in the first state, The second path forming portion includes a guide portion that guides a user's finger to the operation portion. A recording device comprising:

11. 11. The recording apparatus according to claim 10, the support unit has a conveyor belt that conveys a medium, The conveyor belt conveys the medium in a direction intersecting a horizontal direction and a vertical direction. A recording device comprising:

12. 10. The recording apparatus according to claim 2, The support unit has a conveyor belt that conveys a medium. A recording device comprising:

13. 13. The recording apparatus according to claim 12, the support unit has a cleaning unit that cleans the conveyor belt, When viewed in a direction intersecting an outer surface of the door portion, the conveyor belt and the cleaning unit are located within an area of ​​the second path forming portion. A recording device comprising:

14. 14. The recording apparatus according to claim 13, the cleaning unit has a paper dust collection container that collects paper dust from the conveyor belt, When viewed in a direction intersecting an outer surface of the door portion, the second path forming portion covers the paper powder collection container. A recording device comprising:

15. 10. The recording apparatus according to claim 2, the support unit is switchable between a first state in which the support unit can support a medium to be recorded by the recording unit and a second state in which the support unit is retracted from the recording unit from the first state by rotating; The door portion has an abutment portion that abuts against the support portion when the door portion is opened and the support portion is in the second state and then switches the support portion to the first state. A recording device comprising:

16. 10. The recording apparatus according to claim 2, the support unit is switchable between a first state in which the support unit can support a medium to be recorded by the recording unit and a second state in which the support unit is retracted from the recording unit from the first state by rotating; The door portion has a pressing portion that presses the support portion toward the first state. A recording device comprising:

17. 17. The recording apparatus according to claim 16, the door portion has an abutment portion that abuts against the support portion when the door portion is opened and the support portion is in the second state and then switches the support portion to the first state, With the closing operation of the door portion, the abutting portion transitions from a state in which the abutting portion abuts the support portion to a state in which the pressing portion presses the support portion. A recording device comprising:

18. 18. The recording apparatus according to claim 17, The abutment portion holds the pressing portion. A recording device comprising:

19. 18. The recording apparatus according to claim 17, the support portion has a first portion which is a portion which engages with the contact portion and the pressing portion, The door portion has a guide portion that guides the first portion from the pressing portion to the abutting portion when the door portion is opened and the first portion transitions from a state in which the door portion is in contact with the pressing portion to a state in which the abutting portion is in contact with the pressing portion. A recording device comprising:

20. 18. The recording apparatus according to claim 17, the support unit has a conveyor belt that conveys a medium, The conveyor belt conveys the medium in a direction intersecting a horizontal direction and a vertical direction. A recording device comprising:

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