Medium transport apparatus and recording apparatus

Abstract

To suppress the occurrence of a conveyance failure caused by a conveyed medium abutting on a static eliminator.SOLUTION: The recording apparatus includes the transport belt 181 that attracts the media P, the charging units 184 that charge the transport belt 181, the anti-static unit 60 that removes electric charge from the surfaces of the media P transported by the transport belt 181 toward the transport-direction D1 side, the rotary bodies 101 that are provided at positions facing the transport belt 181 upstream of the anti-static unit 60 in the transport-direction D1 side and at which the rotary bodies 101 can come into contact with the transported media P, and the guide unit 102 that guides the media P from the rotary bodies 101 to the anti-static unit 60. 1011, in the medium transport device 1, the guide portion 102 is configured to advance and retract with respect to the transport belt 181.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a medium transport device and a recording device. [Background technology]

[0002] Various media transport devices for transporting media, such as inkjet printers, have been used in the past. Among these, there are media transport devices equipped with a static elimination unit that eliminates charge on the surface of the transported medium. For example, Patent Document 1 discloses an inkjet printer that has a first static elimination unit and a second static elimination unit in which multiple short static elimination rollers are arranged across the entire width of the medium. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-111546 Summary of the Invention [Problem to be solved by the invention]

[0004] The inkjet printer in Patent Document 1 has multiple short static elimination rollers arranged with almost no spacing between them across the entire width of the medium, which allows it to remove charge from the surface of the medium as it is transported and suppress the occurrence of wrinkles. However, a first static elimination unit is configured downstream of the static elimination rollers in the medium transport direction, and there is a risk that the leading edge of the medium transported downstream from the static elimination roller will come into contact with the first static elimination unit, causing a jam. [Means for solving the problem]

[0005] In order to solve the above problem, the media conveying device of the present invention comprises a conveying belt that adsorbs a medium, a charging unit that charges the conveying belt, a discharge unit that removes charge from the surface of the medium conveyed in the conveying direction by the conveying belt, a rotating body that is positioned upstream of the discharge unit in the conveying direction opposite the conveying belt and at a position where it can come into contact with the medium being conveyed, and a guide unit that guides the medium from the rotating body to the discharge unit, wherein the rotating body is composed of a plurality of divided rotating bodies arranged along a width direction that intersects the conveying direction, and the guide unit is configured to be able to move forward and backward relative to the conveying belt.

[0006] In addition, another media conveying device of the present invention for solving the above problem comprises a conveying belt that adsorbs a medium, a charging unit that charges the conveying belt, a discharge unit that removes charge from the surface of the medium conveyed in the conveying direction by the conveying belt, a rotating body that is positioned upstream of the discharge unit in the conveying direction opposite the conveying belt and in a position that can contact the medium being conveyed, a guide unit that guides the medium from the rotating body to the discharge unit, and a holding unit that holds the discharge unit, wherein the rotating body is characterized in that a plurality of divided rotating bodies are arranged along a width direction that intersects the conveying direction, and the guide unit protrudes from the holding unit toward the rotating body. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a diagram showing the internal configuration of a recording device as a medium conveying device according to a first embodiment of the present invention, as viewed from the front side. [Figure 2] FIG. 2 is a perspective view showing a support portion of the recording apparatus in FIG. [Figure 3] FIG. 3 is a perspective view showing a flap of the support portion of FIG. 2. [Figure 4] FIG. 3 is a perspective view showing a frame portion of the support portion of FIG. 2. [Figure 5] 3 is a perspective view showing an end portion in the width direction of the support part of FIG. 2. FIG. [Figure 6] FIG. 2 is a front cross-sectional view showing the periphery of a flap and a support roller of the recording device of FIG. 1. [Figure 7]3 is a perspective cross-sectional view showing the periphery of the flap and support roller of the support portion of FIG. 2. FIG. [Figure 8] 3 is a front cross-sectional view showing the periphery of the flap and support roller of the support portion of FIG. 2, illustrating a state in which the tip of the support roller and the flap are in contact with the conveyor belt. FIG. [Figure 9] 3 is a front cross-sectional view showing the periphery of the flap and support roller of the support unit in FIG. 2, illustrating a state in which the tip of the support roller and the flap are separated from the conveyor belt. FIG. [Figure 10] 7 is a front cross-sectional view showing the periphery of the flap and support roller of the recording device of FIG. 1 at a cross-sectional position different from that of FIG. 6, and showing the state when the tip ends of the support roller and flap are in contact with the conveyor belt. [Figure 11] 7 is a front cross-sectional view showing the periphery of the flap and support roller of the recording device of FIG. 1 at a cross-sectional position different from that of FIG. 6, and showing a state when the tip of the support roller and the flap are separated from the conveyor belt. [Figure 12] FIG. 10 is a front cross-sectional view illustrating the periphery of a support roller of a recording device as a medium conveying device according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0008] The present invention will be briefly described below. A media conveying device according to a first aspect of the present invention comprises a conveying belt that attracts a medium, a charging unit that charges the conveying belt, a discharge unit that removes charge from the surface of the medium conveyed in a conveying direction by the conveying belt, a rotating body that is positioned upstream of the discharge unit in the conveying direction opposite the conveying belt and that can come into contact with the medium being conveyed, and a guide unit that guides the medium from the rotating body to the discharge unit, wherein the rotating body is composed of a plurality of divided rotating bodies arranged along a width direction that intersects the conveying direction, and the guide unit is configured to be able to move forward and backward relative to the conveying belt.

[0009] According to this aspect, a guide section is provided to guide the medium from the rotating body to the static eliminator section. The rotating body is made up of multiple divided rotating bodies arranged along a width direction intersecting the conveyance direction, and the guide section is configured to be able to move forward and backward relative to the conveyor belt. By dividing the rotating body into multiple sections, the medium can be attracted while smoothing out any wrinkles. Furthermore, providing the guide section can prevent the medium from jamming when it enters the static eliminator section. Therefore, it is possible to prevent the conveyed medium from coming into contact with the static eliminator and causing conveyance problems.

[0010] A medium conveying device according to a second aspect of the present invention is an aspect dependent on the first aspect, and is characterized in that the guide portion is provided on the rotation axis of the rotor so as to surround one or more of the divided rotors when viewed from a direction intersecting both the conveying direction and the width direction.

[0011] According to this aspect, the guide unit is provided on the rotation shaft of the rotor so as to surround one or more divided rotors when viewed from a direction intersecting both the conveying direction and the width direction. By providing the guide unit on the rotation shaft in this manner, the guide unit can be brought closer to the rotor. Therefore, the leading edge of the medium that has passed downstream in the conveying direction from the rotor can be easily guided.

[0012] The medium conveying device according to the third aspect of the present invention is an aspect dependent on the second aspect, and is characterized in that multiple sets of the guide portion and the multiple divided rotating bodies are provided on the rotating shaft.

[0013] According to this aspect, a plurality of sets of a guide portion and a plurality of divided rotors are provided on the rotation shaft. This configuration can reduce the gap between the divided rotors while ensuring the rigidity of the guide portion. By reducing the gap between the divided rotors, the occurrence of wrinkles can be reduced.

[0014] A medium conveying device according to a fourth aspect of the present invention is an aspect dependent on any one of the first to third aspects, and is characterized in that it is provided with a biasing portion that biases the guide portion in a direction that brings the downstream end of the guide portion in the conveying direction closer to the conveying belt.

[0015] According to this aspect, the device includes a biasing unit that biases the guide unit in a direction that brings the downstream end of the guide unit in the conveyance direction closer to the conveyor belt. By biasing the leading end of the guide unit in the direction that brings the medium closer to the belt, it is possible to more effectively reduce the risk of a jam occurring when the medium enters the static elimination unit.

[0016] A media conveying device according to a fifth aspect of the present invention is an aspect dependent on the fourth aspect, and is characterized in that it comprises a support part that can swing the rotating body, the guide part, and the urging part, and the support part has a regulating part that regulates the guide part from displacing in a direction approaching the conveying belt against the urging force of the urging part when the guide part oscillates the guide part and the urging part in a direction away from the conveying belt.

[0017] According to this aspect, the rotating body, the guide unit, and the support unit are provided with a swingable support member, and the support unit has a restricting member that restricts the guide unit from moving toward the conveyor belt against the biasing force of the biasing member when the guide unit and the biasing member are swung in a direction away from the conveyor belt. In a configuration in which the guide unit is biased toward the conveyor belt, if the support unit swings in a direction away from the conveyor belt, the guide unit will be displaced toward the conveyor belt by the biasing force if the restricting member is not provided. If the guide unit moves too far toward the conveyor belt, friction between the guide unit and the conveyor belt may occur. However, in this configuration, the restricting member restricts the displacement of the guide unit, thereby suppressing friction between the guide unit and the conveyor belt. Furthermore, if the guide unit moves too far toward the conveyor belt, the angle between the guide unit and the conveyor belt may become large, which may cause misalignment between the guide unit and the conveyor belt when the guide unit returns toward the conveyor belt. However, in the above-described configuration, the restricting portion restricts the displacement of the guide portion, so that it is possible to suppress the misalignment between the guide portion and the conveyor belt.

[0018] A media conveying device according to a sixth aspect of the present invention is an aspect dependent on the fifth aspect, and is characterized in that it comprises a housing that houses the conveying belt, the charging unit, the de-electrification unit and the support unit, and a door unit that is provided on the housing so as to be able to open and close, and the support unit swings the guide unit and the urging unit in a direction in which the guide unit moves away from the conveying belt in conjunction with the opening operation of the door unit.

[0019] According to this aspect, the device includes a housing that houses the conveyor belt, the charging unit, the static eliminator, and the support unit, and a door that is openable and closable on the housing. The support unit swings the guide unit and the biasing unit in a direction in which the guide unit moves away from the conveyor belt in conjunction with the opening of the door. With this configuration, for example, when a user opens the door of the housing to access the interior of the housing, the support unit swings in the direction in which the guide unit moves away from the conveyor belt, thereby increasing the space available.

[0020] A media conveying device according to a seventh aspect of the present invention is an aspect dependent on the sixth aspect, and is characterized in that it comprises a pair of registration rollers that corrects skew of the media and conveys the media to the conveying belt from upstream of the conveying belt in the conveying direction, one roller of the registration roller pair being provided on the support portion, and the registration roller pair moving apart in conjunction with the opening operation of the door portion.

[0021] According to this aspect, a pair of registration rollers is provided that corrects skew of the medium and transports the medium from upstream of the transport belt to the transport belt in the transport direction. One roller of the pair of registration rollers is provided on the support section, and the pair of registration rollers moves apart in conjunction with the opening of the door section. This configuration allows the pair of registration rollers to move apart as the door section opens, making jam clearance easier.

[0022] The medium conveying device according to the eighth aspect of the present invention is an aspect dependent on the seventh aspect, and is characterized in that the tip of the guide portion, whose displacement is regulated by the regulating portion, is positioned in a direction in which the guide portion moves away from the conveying belt than the straight line connecting the tip of the charge removal portion and the rotating body.

[0023] According to this aspect, the tip of the guide, whose displacement is restricted by the restricting unit, is positioned in a direction away from the conveyor belt than the line connecting the tip of the static eliminator and the rotating body. This configuration can prevent jammed media from interfering with the guide during jam clearance, thereby reducing damage to the guide.

[0024] A media conveying device according to a ninth aspect of the present invention is an aspect dependent on the seventh or eighth aspect, and is characterized in that it comprises a holding portion that holds the de-ionization portion, the holding portion having a guide surface that guides the media to the de-ionization portion, and the tip of the guide portion, the displacement of which is regulated by the regulating portion, is positioned in a direction in which the guide portion moves away from the conveying belt than a straight line connecting the guide surface and the rotating body.

[0025] According to this aspect, the holding unit that holds the static eliminator has a guide surface that guides the medium to the static eliminator, and the tip of the guide, whose displacement is restricted by the restricting unit, is positioned in a direction that causes the guide to move away from the conveyor belt with respect to a straight line connecting the guide surface and the rotating body. This configuration prevents jammed media from interfering with the guide during jam clearance, thereby preventing damage to the guide.

[0026] A medium transport device according to a 10th aspect of the present invention is an aspect dependent on any one of the 1st to 9th aspects, and is characterized in that the guide portion is a conductive member and is grounded.

[0027] According to this aspect, the guide portion is a conductive member and is grounded. With this configuration, the surface of the medium can be neutralized not only by the neutralization portion but also via the guide portion.

[0028] The media conveying device according to the eleventh aspect of the present invention comprises a conveying belt that attracts a medium, a charging unit that charges the conveying belt, a de-electrifying unit that removes charge from the surface of the medium conveyed in the conveying direction by the conveying belt, a rotating body that is positioned upstream of the de-electrifying unit in the conveying direction opposite the conveying belt and that can come into contact with the medium being conveyed, a guide unit that guides the medium from the rotating body to the de-electrifying unit, and a holding unit that holds the de-electrifying unit, wherein the rotating body is characterized in that a plurality of divided rotating bodies are arranged along a width direction that intersects the conveying direction, and the guide unit protrudes from the holding unit toward the rotating body.

[0029] According to this aspect, the device includes a guide portion that guides the medium from the rotating body to the static eliminator and a holder that holds the static eliminator. The rotating body is made up of multiple divided rotating bodies arranged along a width direction that intersects with the conveyance direction, and the guide portion protrudes from the holder toward the rotating body. By providing the guide portion so that it protrudes from the holder toward the rotating body, the medium can be easily guided from the rotating body to the static eliminator. This prevents the conveyed medium from coming into contact with the static eliminator, resulting in conveyance problems.

[0030] A medium transport device according to a twelfth aspect of the present invention is an aspect dependent on the eleventh aspect, characterized in that the guide portion is provided over the entire width direction.

[0031] According to this aspect, the guide portion is provided across the entire width of the recording medium. With this configuration, the guide portion can guide the medium more stably.

[0032] A recording device according to a thirteenth aspect of the present invention is characterized by comprising a medium conveying device according to any one of the first to twelfth aspects and a recording unit that records on the medium conveyed by the conveying belt.

[0033] According to this aspect, the recording unit is further provided for recording on the medium transported by the medium transport device, which prevents the transported medium from coming into contact with the static eliminator and causing transport problems.

[0034] A recording device according to a 14th aspect of the present invention is an aspect dependent on the 13th aspect, characterized in that the medium conveying device comprises a supply path that supplies the medium to the conveying belt, and an inversion path that inverts the medium recorded by the recording unit and re-conveys it to the supply path, and the recording unit performs recording by ejecting liquid onto the medium.

[0035] According to this aspect, the inkjet printer includes a supply path that supplies a medium to a conveyor belt and a reversing path that reverses the medium recorded by the recording unit and re-conveys it to the supply path. The recording unit performs recording by ejecting a liquid onto the medium. This configuration makes it possible to prevent conveyance problems caused by the medium coming into contact with the static eliminator in an inkjet printer that can record on both sides of the medium.

[0036] [Example 1] A recording apparatus 1 according to a first embodiment, which is an example of a medium conveying apparatus of the present invention, will be described below with reference to FIGS. 1 to 11. In the XYZ coordinate system shown in each figure, the X axis direction indicates the front and rear directions of the apparatus and the width direction of the medium, the Y axis direction indicates the side direction of the apparatus, and the Z axis direction indicates the height direction of the apparatus and the direction of gravity. The direction in which the medium P is conveyed is referred to as "downstream," and the opposite direction is referred to as "upstream." In addition, in each figure, some components may be omitted or simplified to make the internal configuration easier to understand.

[0037] First, an overview of the recording device 1 of this embodiment will be described with reference to Fig. 1. As shown in Fig. 1, the recording device 1 of this embodiment has a housing 53 and a discharge tray 4 that receives the medium P that has been recorded on and discharged. The recording device 1 also has an opening / closing cover 6 that is configured to be rotatable about a rotation axis (not shown) and can be opened and closed by rotating about the rotation axis. The opening / closing cover 6 is provided with a manual feed tray 41. The manual feed tray 41 rotates about a swing axis 41a and can be opened and closed relative to the opening / closing cover 6.

[0038] The recording device 1 has three medium feeding paths: a feeding path from the medium cassette 10A corresponding to the cassette feeding locus S1, a feeding path from an expansion cassette (not shown) corresponding to the expansion cassette feeding locus S2, and a feeding path from the manual feed tray 41 on which the medium P is placed corresponding to the manual feed path S3. The recording device 1 has three medium ejection methods: face-up ejection, which corresponds to the face-up ejection locus T1 and ejects the medium with the most recently printed first side facing up; face-down ejection, which corresponds to the face-down ejection locus T2 and ejects the medium with the first side facing down; and ejection to a post-processing device that performs post-processing on the medium P when the post-processing device is connected downstream of the recording device 1, which corresponds to the finisher ejection locus T3.

[0039] The recording device 1 is equipped with a face-up paper output tray 7 that receives media P that are discharged face-up. The face-up paper output tray 7 can be placed in a stored state shown in Figure 1 or in an open state (not shown) by rotating about a rotation axis 7a. The recording device 1 also has six media transport paths: a recording transport path R1, a switchback path R2, a reversing path R3, a face-down discharge path R4, a face-up discharge path R5, and a finisher discharge path R6.

[0040] The most downstream portion of the face-down discharge path R4 is configured by the discharge mechanism 36. In the region J1 of FIG.

[0041] The control unit 9, which performs various controls, acquires recording data, which is data for recording, generated by a printer driver running on an external computer (not shown) or a printer driver included in the control unit 9. Based on the recording data, the control unit 9 controls the inkjet recording head 8, various media transport rollers driven by motors (not shown), and flaps, which are path switching members. The control unit 9 performs necessary control based on the detection status of various sensors, such as a sensor that detects the passage of the medium P. The control unit 9 is conceptually shown in FIG. 1 and is actually configured by a circuit board installed in a predetermined position within the device main body 35.

[0042] Here, we will explain the medium feeding path up to the pair of registration rollers 17. Medium cassette 10A, which is detachably mounted on device main body 35, is equipped with hopper 11, and as hopper 11 swings around axis 11a, medium P stored in medium cassette 10A moves toward and away from feed roller 12, which is driven to rotate by a motor (not shown).

[0043] The medium P sent out from the medium cassette 10A by the feed roller 12 passes through the nip position of the separation roller pair 13 to prevent double feeding, and then receives a feeding force from the transport roller pair 14 and reaches the registration roller pair 17. Additional cassettes (not shown) located below the device main body 35 are also equipped with feed rollers 12 and separation roller pairs 13, and the medium P sent out from each additional cassette receives a feeding force from the transport roller pair 14 shown in FIG. 1 and reaches the registration roller pair 17. The manual feed path S3, which is the medium feed path from the manual feed tray 41, is provided with a feed roller 15 and a separation roller 16, and the medium P set in the manual feed tray 41 reaches the registration roller pair 17 by the rotation of these rollers.

[0044] The medium transport path is provided with a registration roller pair 17, transport roller pairs 20-24, transport roller pairs 26-31, and a discharge roller pair 25 as a discharge unit that discharges the medium P. Each roller pair has a drive roller driven by a motor (not shown) and a driven roller that can nip the medium P between itself and the drive roller and that contacts the medium P and rotates in response to the rotation. A recording transport path R1 as a first transport path passes under a recording head 8 as a recording unit that records on the medium P, and extends upstream and downstream of the recording head 8. In the recording transport path R1, the medium P receives a feed force from the registration roller pair 17 and a belt unit 18. The belt unit 18 has an electrostatic attraction belt 181 that transports the medium P, a drive roller 182 and a driven roller 183 between which the electrostatic attraction belt 181 is stretched, and a charging roller 184 that charges the electrostatic attraction belt 181.

[0045] One of the rollers constituting the pair of registration rollers 17 is formed on the support section 100. The support section 100 is displaced by a displacement mechanism (not shown) in accordance with the opening and closing of the opening and closing cover 6. The detailed configuration of the support section 100 will be described later, but the support section 100 is provided with a flap and a support roller, which are essential parts of the recording apparatus 1 of this embodiment.

[0046] The recording head 8 of this embodiment is a so-called line head in which nozzles that eject ink are arranged to cover the entire width of the medium, and is configured as a recording head that can record across the entire width of the medium without moving in the width direction of the medium. However, if the recording unit records by ejecting liquid such as ink onto the medium P, it is not limited to a line head. Furthermore, instead of a recording unit that ejects liquid ink, a recording unit that records using toner may be provided. The recording device 1 of this embodiment is provided with a discharging brush 60 upstream of the recording head 8 in the transport direction D1 of the medium P, which removes charge from the surface of the medium P as it is transported.

[0047] The switchback path R2 as the second transport path is a medium transport path that connects to the recording transport path R1, and after feeding the medium P that has passed under the recording head 8 to the left in Fig. 1, switches back and transports the medium P to the right in Fig. 1, which is the opposite direction to the feeding direction, and is located inside the curve of the face-down discharge path R4, which will be described later. In the switchback path R2, the medium P receives a feeding force from the transport roller pair 26.

[0048] The reverse path R3 as a third transport path is a medium transport path that connects to the switchback path R2, and reverses the medium P transported in the reverse direction, which is to the right in FIG. 1, by detouring above the recording head 8 and merging with the recording transport path R1 at a position upstream of the recording head 8, which in this embodiment is a position upstream of the registration roller pair 17. In the reverse path R3, the medium P receives a feeding force from the transport roller pairs 27, 28, and 29.

[0049] The face-down discharge path R4, which serves as the fourth transport path, is a medium transport path that connects to the recording transport path R1 and is a path for curving the medium P that has passed under the recording head 8 so that the surface facing the recording head 8 is inward, inverting it, and discharging it. In the face-down discharge path R4, the medium P receives a feeding force from the pairs of transport rollers 20, 21, 22, 23, and 24 and the pair of discharge rollers 25. As described above, the most downstream side of the face-down discharge path R4 is configured by the discharge mechanism unit 36. At the connection points of the respective medium transport paths, flaps are provided as path switching members that switch the medium transport paths. The path along which the medium P travels is determined by the flaps.

[0050] As described above, the face-up discharge path R5, which serves as the fifth transport path, is a path that discharges the medium P that has passed under the recording head 8 onto the face-up paper output tray 7 so that the surface facing the recording head 8 faces upward. The face-up discharge path R5 is provided with a transport roller pair 30. As described above, the finisher discharge path R6, which serves as the sixth transport path, is a discharge path to a post-processing device that performs post-processing on the medium P when such a device is connected downstream of the recording device 1. The finisher discharge path R6 is provided with a transport roller pair 31.

[0051] As described above, the recording device 1 of this embodiment includes the electrostatic attraction belt 181 as a conveying belt that attracts and conveys the medium P, the charging roller 184 as a charging unit that charges the electrostatic attraction belt 181, and the discharging brush 60 as a discharging unit that removes charge from the surface of the medium P conveyed in the conveying direction D1 by the electrostatic attraction belt 181. The discharging brush 60 sandwiches the medium P that is conveyed together with the electrostatic attraction belt 181 in the medium conveying path. Next, the detailed configuration of the support unit 100 will be described with reference to FIGS. 2 to 11.

[0052] 2 and other figures, the support unit 100 is provided with a support roller 101 that presses the transported medium P against the electrostatic attraction belt 181, at a position facing the electrostatic attraction belt 181 upstream of the static elimination brush 60 in the transport direction D1 of the medium P. In other words, the support unit 100 is provided with the support roller 101, which is a rotating body, at a position facing the electrostatic attraction belt 181 upstream of the static elimination brush 60 in the transport direction D1 and at a position that can come into contact with the transported medium P.

[0053] The support unit 100 also includes a metal flap 102 that prevents the tip PA of the transported medium P in the transport direction D1 from curling up in a region that is not attracted to the electrostatic attraction belt 181, and prevents the tip PA from colliding with the discharging brush 60. In other words, the support unit 100 includes the flap 102 as a guide that guides the medium P from the support roller 101 to the discharging brush 60. The flap 102 presses the transported medium P against the electrostatic attraction belt 181 with a constant force.

[0054] 2, 5, and 7, the support roller 101 has a plurality of divided rotors 1011 arranged along the X-axis direction, which corresponds to the medium width direction intersecting with the conveying direction D1. As shown in Fig. 3 and other figures, the flap 102 is provided with a leading end 1021 that is provided on the leading end side in the conveying direction D1 and can press the conveyed medium P against the electrostatic adsorption belt 181, a bearing 1022 through which the rotation shaft 104 of the support roller 101 passes, and a trailing end 1023 that is provided on the trailing end side in the conveying direction D1 and is pulled upward in the +Z direction corresponding to the spring 107 that is hung therearound, as shown in Fig. 7 and other figures.

[0055] The support unit 100 also includes a metal frame unit 108 shown in Figures 2 and 4. The frame unit 108 is provided with a hook 1081 around which the spring 107 is hung. With this configuration, the flap 102 is rotatable around the bearing 1022 as a rotation axis, as shown in Figures 8 and 9, for example, and the tip 1021 is movable forward and backward relative to the electrostatic attraction belt 181. The member forming the bearing 1022 is thin plate-shaped, and is configured so that the gap between the divided rotating bodies 1011 arranged across the member does not become too wide.

[0056] In the recording apparatus 1 of this embodiment, by dividing the support roller 101 into multiple parts, wrinkles in the transported medium P can be smoothed out while the medium P is attracted to the electrostatic attraction belt 181. Furthermore, by providing the flap 102, a configuration is achieved that can prevent the medium P from jamming when it enters the static elimination brush 60. The leading edge PA1 in FIG. 6 represents the transport trajectory of the leading edge PA of the medium P in the recording apparatus 1 of this embodiment, while the leading edge PA2 in FIG. 6 represents the transport trajectory of the leading edge PA of the medium P in a reference example recording apparatus configured without the flap 102. Therefore, the recording apparatus 1 of this embodiment is configured to prevent the transported medium P from coming into contact with the static elimination brush 60 and causing transport problems. Note that "coming into contact with the static elimination brush 60" also includes coming into contact with the holding portion 61 that holds the static elimination brush 60.

[0057] Furthermore, in the recording device 1 of this embodiment, the flap 102 can move forward and backward relative to the electrostatic adsorption belt 181, so the flap 102 can be displaced depending on the thickness of the medium P and the position of the leading edge PA. This makes it possible to more effectively guide a variety of media P. Note that in this embodiment, the guide section that guides the medium P from the rotating body to the static eliminator is a flap, but the guide section is not limited to a flap-like configuration, and may have a configuration other than a flap as long as it can move forward and backward relative to the conveyor belt.

[0058] Furthermore, the recording device 1 of this embodiment is a medium transport device and also a printer that includes a recording head 8 as a recording unit that performs recording on a medium P transported by an electrostatic adsorption belt 181. Therefore, it can be described as a device that can perform recording on a medium P transported by a medium transport device that can prevent the transported medium P from coming into contact with the discharging brush 60 and causing transport problems.

[0059] Furthermore, the recording apparatus 1 of this embodiment includes a recording transport path R1, which is a supply path that supplies the medium P to the electrostatic adsorption belt 181, and a reversing path R3 that reverses the medium P that has been recorded on by the recording head 8 and transports it back to the recording transport path R1. The recording head 8 can perform recording by ejecting ink, which is an example of a liquid, onto the medium P. With this configuration, the recording apparatus 1 of this embodiment can record on both sides of the medium P. In an inkjet printer that can record on both sides of the medium P, it is possible to prevent the medium P being transported from coming into contact with the discharging brush 60 and causing transport problems.

[0060] In general, in inkjet printers, the medium P is prone to curling due to the ejection of liquid ink. In particular, when recording on both sides of the medium P, a large amount of ink adheres, making the medium P particularly prone to curling. This makes it more likely that a jam will occur when the medium P, which has been recorded on its front side, enters the static elimination unit to record on its back side. However, the printer 1 of this embodiment has the above-described configuration, which reduces the likelihood of a jam occurring. Furthermore, when recording on both sides of the medium P, the electrostatic adsorption belt 181 will adsorb the surface that has already been recorded on and has ink adhering to it when recording on the back side. However, the ink may make it difficult for this surface to adsorb to the electrostatic adsorption belt 181. However, the printer 1 of this embodiment is equipped with the support roller 101 and flap 102 as rotating bodies, which makes it easier for this surface to adsorb to the electrostatic adsorption belt 181.

[0061] In the recording device 1 of this embodiment, the flap 102 serves as a guide that nips the medium P being transported after passing through the support roller 101 between the flap 102 and the electrostatic attraction belt 181 and guides the medium P along a path to the discharging brush 60. Generally, medium P with high recording density is prone to curling, and when recording on the back side during double-sided recording, the leading edge PA is prone to entering the discharging brush 60 in a curled state, causing a jam. As shown by the leading edge PA2 in Figure 6, in a configuration without the flap 102, the medium P that has passed through the support roller 101 may enter the discharging brush 60 in a curled state, causing a jam.

[0062] On the other hand, in a configuration such as the recording apparatus 1 of this embodiment, where a flap 102 is provided, the flap 102 serves as a guide for the medium P after it passes through the support roller 101 and before it enters the static elimination brush 60. The flap 102 is disposed at an angle relative to the surface of the electrostatic adsorption belt 181, allowing the medium P to stably enter the static elimination brush 60. Furthermore, in the recording apparatus 1 of this embodiment, a spring 107 is attached to the hole 1023A in the rear end 1023 of the flap 102 as shown in FIG. 3 and the hook portion 1081 of the frame portion 108 as shown in FIG. 4, as shown in FIG. 7, thereby applying a load in the −Z direction corresponding to a downward direction to the tip end 1021 of the flap 102. The flap 102 is displaced according to the thickness of the medium P, allowing it to accommodate media P of various thicknesses.

[0063] In the recording device 1 of this embodiment, the support roller 101 has the role of conveying the medium P to the medium conveyance path downstream in the conveyance direction D1 while smoothing out wrinkles on the medium P by nipping the conveyed medium P between the support roller 101 and the electrostatic adsorption belt 181. The support roller 101 is not a single cylinder that is long in the width direction, but is made up of a plurality of short, cylindrical divided rotors 1011. The support roller 101 has a plurality of divided rotors 1011 arranged on the rotation shaft 104 with almost no gaps between them, thereby preventing smoothed wrinkles from getting into the gaps between the divided rotors 1011 and being crushed.

[0064] Furthermore, in the recording device 1 of this embodiment, the support roller 101 is divided into multiple divided rotors 1011, so that the support roller 101 rotates only as far as the width of the medium P, thereby reducing conveyance resistance according to the width of the medium P. The support roller 101 is passed through the same rotation shaft 104 as the flap 102, and the rotation shaft 104 is configured to apply a downward load. Specifically, as shown in FIG. 5 , a coil spring 106 is passed through a shaft portion 105 extending in the width direction of the support portion 100 at both ends in the width direction of the support portion 100, and arm portions 106A of the coil spring 106 press the rotation shaft 104 downward.

[0065] In the recording apparatus 1 of this embodiment, as described above, the frame portion 108 hooks the spring 107 at the hook portion 1081 for pressing the tip portion 1021 of the flap 102 against the electrostatic attraction belt 181. The support portion 100 is configured to be movable in the vertical direction, and is configured to allow the support roller 101 and the tip portion 1021 of the flap 102 to be separated from the electrostatic attraction belt 181. The frame portion 108 has a tip portion 108A as a regulating portion for determining the angle of the flap 102 when the support roller 101 is separated from the electrostatic attraction belt 181.

[0066] 8 shows the angle of the flap 102 when the support roller 101 and the tip 1021 of the flap 102 are in contact with the electrostatic attraction belt 181, and FIG. 9 shows the angle of the flap 102 when the support roller 101 and the tip 1021 of the flap 102 are separated from the electrostatic attraction belt 181. In the recording apparatus 1 of this embodiment, FIG. 8 shows the state in which the tip 1021 of the flap 102 is in contact with the electrostatic attraction belt 181, which corresponds to the state when the medium P is transported by the electrostatic attraction belt 181. When the support part 100 is moved upward from the state shown in FIG. 8, the flap 102 rotates in the rotation direction D2. This is because the rear end 1023 is biased by the spring 107 so that the flap 102 rotates in the rotation direction D2. At this time, the support roller 101 moves away from the electrostatic attraction belt 181, but the tip end 1021 and the electrostatic attraction belt 181 remain in contact with each other.

[0067] On the other hand, when the support part 100 is moved upward from the state shown in Fig. 8 to a predetermined position, the rotation of the flap 102 in the rotation direction D2 is restricted. The state shown in Fig. 9 represents a state in which the rotation of the flap 102 in the rotation direction D2 is restricted. Then, when the support part 100 is moved further upward from the state in which the rotation of the flap 102 in the rotation direction D2 is restricted, the tip part 1021 and the electrostatic adsorption belt 181 also separate. In the state in which the rotation of the flap 102 in the rotation direction D2 is restricted, the angle of the flap 102 remains constant in the state shown in Fig. 9.

[0068] 9, in a state where the rotation of the flap 102 in the rotation direction D2 is restricted, the rear end 1023 of the flap 102 abuts against the tip end 108A of the frame part 108. In other words, the tip end 108A of the frame part 108 is a restricting part that restricts the flap 102 from being displaced in a direction approaching the electrostatic adsorption belt 181.

[0069] To put the above in another way, the recording device 1 of this embodiment includes a spring 107 as a biasing unit that biases the flap 102 downward, in a direction that brings the rear end 1023, which is the downstream end of the flap 102 in the transport direction D1, closer to the electrostatic adsorption belt 181. The recording device 1 of this embodiment is configured in this way, and by biasing the tip end 1021 of the flap 102 downward, in a direction that brings it closer to the electrostatic adsorption belt 181, the risk of a jam occurring when the medium P enters the discharging brush 60 is more effectively reduced depending on the thickness of the medium P, etc.

[0070] The recording apparatus 1 of this embodiment also includes a support unit 100 that can swing the support roller 101, the flap 102, the spring 107, and the like. The support unit 100 has a tip end 108A of a frame unit 108 that serves as a regulating unit that regulates the flap 102 from displacing downward, that is, toward the electrostatic attraction belt 181, against the biasing force of the spring 107, when the flap 102 and the spring 107 are swung upward, that is, away from the electrostatic attraction belt 181. In a configuration in which the flap 102 is biased downward, that is, toward the electrostatic attraction belt 181, when the support unit 100 swings in a direction away from the electrostatic attraction belt 181, the flap 102 is displaced toward the electrostatic attraction belt 181 due to the biasing force, unless a regulating unit is provided. If the flap 102 is displaced too far toward the electrostatic attraction belt 181, the flap 102 and the electrostatic attraction belt 181 may rub against each other. However, in the recording apparatus 1 of this embodiment, the regulating unit regulates the displacement of the flap 102 as configured above, thereby suppressing friction between the flap 102 and the electrostatic attraction belt 181. Furthermore, if the flap 102 is displaced too far in the direction approaching the electrostatic attraction belt 181, the angle between the flap 102 and the electrostatic attraction belt 181 increases, which may cause the flap 102 and the electrostatic attraction belt 181 to become twisted when the support unit 100 returns the flap 102 and the spring 107 downward, in the direction approaching the electrostatic attraction belt 181. However, in the recording apparatus 1 of this embodiment, the regulating unit regulates the displacement of the flap 102 as configured above, thereby suppressing twisting between the flap 102 and the electrostatic attraction belt 181.

[0071] Here, "the direction away from the electrostatic attraction belt 181" includes the direction in which the flap 102 does not separate from the electrostatic attraction belt 181 at the start of the swinging motion, but the direction in which the flap 102 separates by swinging further. In other words, the above expression merely defines the direction, and in the case of the recording apparatus 1 of this embodiment, it simply refers to downward. In the recording apparatus 1 of this embodiment, the tip 1021 of the flap 102 is actually biased by the spring 107, so the flap 102 does not separate from the electrostatic attraction belt 181 at the start of the swinging motion. Furthermore, as in the configuration of the recording apparatus 1 of this embodiment, the "regulating unit" may be configured to regulate the displacement of the guide unit after it has been displaced a certain amount.

[0072] 2 and 7, the flap 102 of this embodiment is provided on the rotation axis 104 of the support roller 101 so as to surround one or more divided rotors 1011 when viewed from the Z axis direction, which intersects with the Y axis direction corresponding to the conveying direction D1 and the X axis direction corresponding to the width direction. By providing the flap 102 on the rotation axis 104 of the support roller 101 in this manner, the flap 102 can be brought closer to the support roller 101. Therefore, the flap 102 of this embodiment can easily guide the leading edge PA of the medium P that has passed through the support roller 101 downstream in the conveying direction D1. Note that, although the flap 102 of this embodiment is provided on the rotation axis 104 of the support roller 101 so as to surround four divided rotors 1011, this is not limiting.

[0073] 2, the recording device 1 of this embodiment has a plurality of sets 103, each of which includes a flap 102 and a plurality of divided rotors 1011, arranged around a rotation shaft 104. This configuration makes it possible to reduce the gaps between the divided rotors 1011 while ensuring the rigidity of the flap 102. Reducing the gaps between the divided rotors 1011 makes it possible to prevent wrinkles from occurring.

[0074] From the viewpoint of wrinkle prevention alone, ideally, it is preferable to arrange as many small divided rotors 1011 as possible in succession in the width direction with small gaps between them. However, if the flaps 102 are configured to surround many small divided rotors 1011 only at both ends in the width direction, the rigidity will be low. From the viewpoint of rigidity alone, it is preferable to configure each divided rotor 1011 to be surrounded by a flap 102. However, since flaps 102 are attached to all the spaces between the divided rotors 1011, gaps that can cause wrinkles will be created. For this reason, it is preferable to design the rotors with a balance between these two. In other words, it is preferable that multiple sets 103 of divided rotors 1011 are provided on the rotating shaft 104.

[0075] As described above, the recording apparatus 1 of this embodiment includes the housing 53 that houses the electrostatic attraction belt 181, the charging roller 184, the charge removal brush 60, the support unit 100, and the like, and the opening / closing cover 6 that is openably and closably mounted on the housing 53. The support unit 100 is configured to swing the flap 102 and the spring 107 in a direction in which the flap 102 moves away from the electrostatic attraction belt 181 in conjunction with the opening operation of the opening / closing cover 6 by a linkage mechanism (not shown). FIG. 10 shows the opening / closing cover 6 in a closed state, with the leading end 1021 of the flap 102 in contact with the electrostatic attraction belt 181. Meanwhile, FIG. 11 shows the opening / closing cover 6 in an open state, with the leading end 1021 of the flap 102 spaced apart from the electrostatic attraction belt 181.

[0076] With the recording device 1 of this embodiment being configured as described above, for example, when a user opens the opening / closing cover 6 of the housing 53 to access the inside of the housing 53, the support part 100 swings in the separating direction, i.e., moves upward, so that the space can be expanded. From another perspective, for example, when a user accesses the inside of the housing 53, the flap 102 is not displaced too much in the direction approaching the electrostatic adsorption belt 181, so that the space inside the housing 53 can be more effectively secured.

[0077] As described above, the recording apparatus 1 of this embodiment is also equipped with a pair of registration rollers 17. The pair of registration rollers 17 corrects skew of the medium P and transports the medium P from upstream of the electrostatic adsorption belt 181 to the electrostatic adsorption belt 181 in the transport direction D1. As shown in FIG. 1 , one roller 171 of the pair of registration rollers 17 is provided on the support member 100. The support member 100 swings in the separating direction in conjunction with the opening of the open-close cover 6, causing the pair of registration rollers 17 to separate in conjunction with the opening of the open-close cover 6. This configuration of the recording apparatus 1 of this embodiment allows the pair of registration rollers 17 to separate in conjunction with the opening of the open-close cover 6, making jam clearance easier. Furthermore, for example, when a user accesses the inside of the housing 53, the flap 102 is not displaced too far in the direction approaching the electrostatic adsorption belt 181, making jam clearance easier.

[0078] Here, a preferred angle of the flap 102 when the support portion 100 is separated will be described. As shown in FIG. 11 , the tip P1 of the tip portion 1021 of the flap 102, whose displacement is restricted by the tip portion 108A of the frame portion 108, is preferably positioned above the straight line L1, which is represented by a two-dot chain line connecting the tip P2 of the static elimination brush 60 and the underside P3 of the support roller 101, in the direction in which the flap 102 moves away from the electrostatic adsorption belt 181. This configuration prevents jammed medium P from interfering with the flap 102 during jam clearance. Therefore, the recording apparatus 1 of this embodiment is configured to prevent damage to the flap 102. Note that the position of the "underside P3 of the support roller 101" may be the position of the lower end of the support roller 101, or may be the position where the surface of the support roller 101 comes into contact when a straight line is drawn based on the tip P2 of the static elimination brush 60, as shown in FIG. 11 .

[0079] Because the recording device 1 of this embodiment is configured as described above, if a jam occurs in the medium P on the transport path inside the recording device 1 and the opening / closing cover 6 is opened to pull out the medium P, there is a risk that the flap 102 will be deformed if the tip 1021 of the flap 102 hangs down and is on the path of the medium P being pulled out, i.e., if it is in a position overlapping with the straight line L1. This is because a force is applied to the flap 102 from the medium P, and stress is concentrated at the portion where the tip 108A of the frame portion 108 and the flap 102 abut, which may cause deformation of the flap 102 or the frame portion 108. In the recording device 1 of this embodiment, the flap 102 is set at an angle that prevents the flap 102 from being on the path of the medium P being pulled out when the support portion 100 is separated, thereby suppressing deformation of the flap 102 that occurs when the jam is cleared.

[0080] 11, the recording apparatus 1 of this embodiment includes a holding portion 61 that holds the static elimination brush 60, and the holding portion 61 has a guide surface 61A that guides the medium P to the static elimination brush. The tip portion 1021 of the flap 102, whose displacement is restricted by the tip portion 108A of the frame portion 108, is positioned above the straight line L2, which is represented by the dashed dotted line connecting the guide surface 61A and the support roller 101, in the direction in which the flap 102 moves away from the electrostatic adsorption belt 181.

[0081] The recording apparatus 1 of this embodiment is configured as described above, and the tip 1021 of the flap 102, whose displacement is restricted, is located in a direction away from the electrostatic attraction belt 181 from the straight line connecting the tip P4 of the guide surface 61A that guides the flap 102 to the anti-static brush 60 and the underside P3 of the support roller 101. This prevents jammed medium P from interfering with the flap 102 during jam clearance. Therefore, from this perspective as well, the recording apparatus 1 of this embodiment can prevent damage to the flap 102. From this perspective as well, the position of the "underside P3 of the support roller 101" may be the position of the lower end of the support roller 101, or may be the position where the "underside P3 of the support roller 101" comes into contact with the surface of the support roller 101 when a straight line is drawn based on the tip P4 of the guide surface 61A, as shown in FIG. 11 .

[0082] Furthermore, in the recording apparatus 1 of this embodiment, the flap 102 is made of stainless steel, which is a conductive member, and is grounded via a metal frame, etc. With this configuration, the recording apparatus 1 of this embodiment is configured so that the medium P can be neutralized not only by the neutralization brush 60 but also by the flap 102.

[0083] [Example 2] Next, a recording device of Example 2 will be described with reference to FIG. 12. In FIG. 12, components common to those of Example 1 are designated by the same reference numerals, and detailed description thereof will be omitted. Note that FIG. 12 corresponds to FIG. 10 showing the recording device 1 of Example 1. Here, the recording device of this example has the same configuration as the recording device 1 of Example 1, except for the configuration of the guide unit. Therefore, except for the parts described below, the recording device of this example has the same features as the recording device 1 of Example 1.

[0084] As described above, in the recording device 1 of Example 1, the guide portion that guides the medium P from the support roller 101 to the discharging brush 60 is the flap 102. On the other hand, as shown in Fig. 12, in the recording device of this example, the guide portion is the convex portion 61B provided on the holding portion 61. The convex portion 61B protrudes from the configuration area of ​​the guide surface 61A of the holding portion 61 toward the -Y direction, which corresponds to the direction toward the support roller 101, and extends along the X-axis direction.

[0085] That is, the recording device of this embodiment includes an electrostatic attraction belt 181 that attracts the medium P, a charging roller 184 that charges the electrostatic attraction belt 181, and a discharging brush 60 that removes charge from the surface of the medium P transported in the transport direction D1 by the electrostatic attraction belt 181. The recording device of this embodiment also includes a support roller 101 that is located upstream of the discharging brush 60 in the transport direction D1 and faces the electrostatic attraction belt 181 so as to be able to contact the transported medium P, a protrusion 61B that guides the medium P from the support roller 101 to the discharging brush 60, and a holding unit 61 that holds the discharging brush 60. Here, similar to the recording device 1 of the first embodiment, the support roller 101 has multiple divided rotors 1011 arranged along the width direction that intersects with the transport direction D1. In the recording device of this embodiment, the protrusion 61B serving as a guide protrudes from the holding unit 61 toward the support roller 101.

[0086] In this way, by providing the protrusion 61B as a guide portion so as to protrude from the holding portion 61 toward the support roller 101, which is a rotating body, the medium P can be easily guided from the support roller 101 to the static elimination brush 60. Therefore, the recording device of this embodiment can prevent the transported medium P from coming into contact with the static elimination brush 60, causing transport problems. Furthermore, by providing the guide portion in the static elimination portion rather than in the rotating body, as in the recording device of this embodiment, the gap between the rotating bodies can be made smaller in a configuration including multiple rotating bodies. For example, in the recording device 1 of Example 1, the divided rotating bodies 1011 are arranged with the component forming the bearing 1022, which is part of the guide portion, sandwiched between them, but in the recording device of this embodiment, it is possible to eliminate the need to place part of the guide portion between the rotating bodies.

[0087] Furthermore, as described above, in the recording device of this embodiment, the convex portions 61B as guide portions are provided across the entire width direction. With this configuration, the recording device of this embodiment can more stably guide the medium P with the convex portions 61B.

[0088] The present invention is not limited to the embodiments and modifications described above, and 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 within the scope of the present invention. [Explanation of symbols]

[0089] 1...recording device (medium conveying device), 4...discharge tray, 6...opening / closing cover, 7...face-up discharge tray, 7a...rotating shaft, 8...recording head (recording unit), 9...control unit, 10A...medium cassette, 11...hopper, 11a...shaft, 12...feed roller, 13...separation roller pair, 14...conveying roller pair, 15...feed roller, 16...separation roller, 17...registration roller pair, 18...belt unit, 20...conveying roller pair, 21...conveying roller pair, 22...conveying roller pair, 23...pair of transport rollers, 24...pair of transport rollers, 25...pair of discharge rollers, 26...pair of transport rollers, 27...pair of transport rollers, 28...pair of transport rollers, 29...pair of transport rollers, 30...pair of transport rollers, 31...pair of transport rollers, 35...main body of device, 36...discharge mechanism, 41...manual feed tray, 41a...oscillating shaft, 53...casing, 60...discharge brush (discharge unit), 61...holding unit, 61A...guide surface, 61B...convex portion (guide unit), 100...support unit, 101...support roller (rotating body) , 102... flap (guide portion), 103... set, 104... rotating shaft, 105... shaft portion, 106... coil spring, 106A... arm portion, 107... spring (urging portion), 108... frame portion, 108A... tip portion, 171... roller, 181... electrostatic adsorption belt (conveyor belt), 182... drive roller, 183... driven roller, 184... charging roller (charging portion), 1011... divided rotating body, 1021... tip portion, 1022... bearing, 1023... rear end portion, 1023A... hole portion, 1081... pull Hook, L1...straight line, L2...straight line, P...medium, PA...leading edge, PA1...leading edge, PA2...leading edge, P1...leading edge, P2...leading edge, P3...bottom, P4...leading edge, R1...recording transport path, R2...switchback path, R3...reversal path, R4...face-down ejection path, R5...face-up ejection path, S1...cassette feed path, S2...additional cassette feed path, S3...manual feed path, T1...face-up ejection path, T2...face-down ejection path, T3...finisher ejection path

Claims

1. a conveyor belt that adsorbs the medium; a charging unit that charges the conveyor belt; a charge removal unit that removes charges from the surface of the medium transported in the transport direction by the transport belt; a rotating body provided at a position facing the conveyor belt upstream of the static eliminator in the conveyance direction and capable of contacting the medium being conveyed; a guide section that guides the medium from the rotating body to the static eliminator section; Equipped with the rotating body includes a plurality of divided rotating bodies arranged along a width direction intersecting with the conveying direction, The guide portion is configured to be able to advance and retreat relative to the conveyor belt. A medium transport device characterized by:

2. 2. The medium transport device according to claim 1, the guide portion is provided on a rotation shaft of the rotor so as to surround one or more of the divided rotors when viewed from a direction intersecting both the conveying direction and the width direction; A medium transport device characterized by:

3. 3. The medium transport device according to claim 2, a plurality of sets of the guide portion and the plurality of divided rotors are provided on the rotation shaft; A medium transport device characterized by:

4. 2. The medium transport device according to claim 1, a biasing portion that biases the guide portion in a direction that brings a downstream end portion of the guide portion in the conveying direction closer to the conveyor belt; A medium transport device characterized by:

5. 5. The medium transport device according to claim 4, a support portion that allows the rotating body, the guide portion, and the biasing portion to swing; the support portion has a regulating portion that regulates the guide portion from being displaced in a direction toward the conveyor belt against the urging force of the urging portion when the guide portion swings the guide portion and the urging portion in a direction away from the conveyor belt. A medium transport device characterized by:

6. 6. The medium transport device according to claim 5, a housing that houses the conveyor belt, the charging unit, the static eliminator, and the support unit; a door portion provided on the housing in an openable and closable manner; Equipped with the support portion swings the guide portion and the biasing portion in a direction in which the guide portion moves away from the conveyor belt in conjunction with the opening operation of the door portion. A medium transport device characterized by:

7. 7. The medium transport device according to claim 6, a pair of registration rollers that corrects skew of the medium and transports the medium to the transport belt from upstream of the transport belt in the transport direction; one roller of the pair of resist rollers is provided on the support portion, The pair of registration rollers are separated in conjunction with the opening operation of the door portion. A medium transport device characterized by:

8. 8. The medium transport device according to claim 7, a tip of the guide portion whose displacement is restricted by the restricting portion is located in a direction away from the conveyor belt with respect to a straight line connecting the tip of the static eliminating portion and the rotating body; A medium transport device characterized by:

9. 8. The medium transport device according to claim 7, a holding portion that holds the static eliminator, the holding portion has a guide surface that guides the medium to the static eliminating portion, a tip end of the guide portion, the displacement of which is restricted by the restricting portion, is positioned in a direction away from the conveyor belt with respect to a straight line connecting the guide surface and the rotating body; A medium transport device characterized by:

10. 2. The medium transport device according to claim 1, The guide portion is a conductive member and is grounded. A medium transport device characterized by:

11. a conveyor belt that adsorbs the medium; a charging unit that charges the conveyor belt; a charge removal unit that removes charges from the surface of the medium transported in the transport direction by the transport belt; a rotating body provided at a position facing the conveyor belt upstream of the static eliminator in the conveyance direction and capable of contacting the medium being conveyed; a guide section that guides the medium from the rotating body to the static eliminator section; a holding portion that holds the static eliminator; Equipped with the rotating body includes a plurality of divided rotating bodies arranged along a width direction intersecting with the conveying direction, The guide portion protrudes from the holding portion toward the rotating body. A medium transport device characterized by:

12. The medium transport device according to claim 11, The guide portion is provided over the entire width direction. A medium transport device characterized by:

13. a medium transport device according to any one of claims 1 to 11; a recording unit that records on the medium transported by the transport belt; A recording device comprising:

14. 14. The recording apparatus according to claim 13, the medium transport device includes a supply path that supplies the medium to the transport belt, and a reversing path that reverses the medium recorded by the recording unit and transports it back to the supply path; the recording unit performs recording by ejecting a liquid onto the medium; A recording device characterized by:

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