Liquid discharge device

Abstract

To maintain a position of a liquid supply device relative to a body properly.SOLUTION: A liquid discharge device 1 includes: a liquid discharge part 5 for discharging a liquid; a body 9 equipped with the liquid discharge part 5; casters 13 movably supporting the body 9 on installation surfaces; adjusters 14 each for adjusting a position in a separation direction D between the installation surface G and the body 9; and a liquid supply device 100 which is movably formed independently of the body 9 and supplies the liquid to the liquid discharge part 5 through a liquid supply passage 12. The liquid supply device 100 has an engagement part 110 which engages with the body 9. The engagement part 110 has a caster receiving part 111 which may be installed between the caster 13 and the installation surface G in an engagement state that the body 9 and the liquid supply device 100 are engaged.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a liquid ejection device. [Background technology]

[0002] Various liquid ejection devices have been used in the past. Among these, there is a liquid ejection device in which a main body that ejects liquid and a liquid supply device that supplies liquid to the main body are configured to be movable. For example, Patent Document 1 discloses a printer system that includes a printer that prints by ejecting ink and a liquid supply device that supplies ink to the printer, and the printer and liquid supply device are connected by multiple tubes and are configured to be movable. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-199700 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional liquid ejection devices in which the main body and liquid supply device are configured to be movable, such as the printer system of Patent Document 1, for example, when the liquid ejection device is moved, there is a risk that the main body and the liquid supply device may become too far apart, causing damage to the liquid supply path such as a tube, or that the main body and the liquid supply device may become too close, causing a collision. Such risks are particularly likely to occur when the main body and the liquid supply device do not move in unison when they are moved. [Means for solving the problem]

[0005] In order to solve the above problem, the liquid ejection device of the present invention comprises a liquid ejection unit that ejects liquid, a main body on which the liquid ejection unit is mounted, casters that movably support the main body on an installation surface, an adjuster that adjusts the position of the main body in the direction of separation between the installation surface and the main body, and a liquid supply device that is configured to be movable independently of the main body and supplies the liquid to the liquid ejection unit via a liquid supply path, wherein the liquid supply device has an engagement portion that engages with the main body, and the engagement portion has a caster receiving portion that can be positioned between the caster and the installation surface when the main body and the liquid supply device are engaged. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a schematic side view of a liquid ejection device according to an embodiment of the present invention. [Figure 2] 2 is a perspective view of the liquid ejection device of FIG. 1 from the rear side, illustrating a state in which the liquid supply device and the main body are not connected. FIG. [Figure 3] 2 is a partial perspective view of the liquid ejection device of FIG. 1 from the rear side, illustrating a state in which the liquid supply device and the main body are connected via a liquid supply channel. FIG. [Figure 4] 2 is a side view of the periphery of the casters and adjuster in the main body of the liquid ejection device of FIG. 1. FIG. [Figure 5] FIG. 2 is a perspective view of a liquid supply device attached to the main body of the liquid ejection device of FIG. [Figure 6] 2 is a perspective view showing a state in which a liquid supply device is attached to the main body of the liquid ejection device of FIG. 1. FIG. [Figure 7] 2 is a side view of the periphery of the casters and adjusters in the main body of the liquid ejection device of FIG. 1, showing a state in which caster receiving portions are attached. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0007] First, the present invention will be briefly described. In order to solve the above problem, a first aspect of the liquid ejection device of the present invention comprises a liquid ejection unit that ejects liquid, a main body on which the liquid ejection unit is mounted, casters that movably support the main body on an installation surface, an adjuster that adjusts the position of the main body in the direction of separation between the installation surface and the main body, and a liquid supply device that is configured to be movable independently of the main body and supplies the liquid to the liquid ejection unit via a liquid supply path, wherein the liquid supply device has an engagement portion that engages with the main body, and the engagement portion has a caster receiving portion that can be positioned between the caster and the installation surface when the main body and the liquid supply device are engaged.

[0008] According to this aspect, the liquid supply device has an engagement portion that engages with the main body, and the engagement portion has a caster receiving portion that can be positioned between the caster and the installation surface when engaged. This configuration prevents the main body and the liquid supply device from moving unexpectedly, and even if the main body or the liquid supply device moves, the main body and the liquid supply device move in conjunction with each other. This allows the liquid supply device to be properly positioned relative to the main body, reducing the risk of the main body and the liquid supply device being too far apart and damaging the liquid supply path, or the risk of the main body and the liquid supply device getting too close and colliding.

[0009] A second aspect of the liquid ejection device of the present invention is an aspect dependent on the first aspect, and is characterized in that the caster receiving portion has a wall portion that surrounds the caster on three surfaces in the engaged state: two surfaces facing each other in an opposing direction that intersects the separating direction, and one surface facing in a direction that intersects the separating direction and the opposing direction.

[0010] According to this aspect, the caster receiving portion has a wall portion that surrounds the caster with three surfaces: two surfaces that face each other in the facing direction and one surface that faces in the separating direction and in a direction intersecting the facing direction when engaged. This configuration can prevent the caster receiving portion from coming off the caster unintentionally.

[0011] A third aspect of the liquid ejection device of the present invention is an aspect dependent on the second aspect, and is characterized in that the two opposing surfaces of the wall portion extend to a position where the adjuster is provided in the engaged state.

[0012] According to this aspect, the two opposing surfaces of the wall portion extend to the position where the adjuster is provided when engaged. This configuration particularly effectively prevents the caster receiving portion from coming off the caster unintentionally by the user.

[0013] A fourth aspect of the liquid ejection device of the present invention is an aspect dependent on any one of the first to third aspects, and is characterized in that the engagement portion has a folding portion on which the caster receiving portion is provided, and the folding portion is unfolded in the engaged state.

[0014] According to this aspect, the engaging portion has a folding portion provided with a caster receiving portion, and the folding portion is unfolded in the engaged state. This configuration makes it possible to prevent the engaging portion from becoming a hindrance, such as dragging the caster receiving portion, when the main body and the liquid supply device are in a disengaged state.

[0015] A fifth aspect of the liquid ejection device of the present invention is an aspect dependent on any one of the first to third aspects, and is characterized in that, in the engaged state, the main body and the liquid supply device are connected by the liquid supply path and can be put into a usable state.

[0016] According to this aspect, in the engaged state, the main body and the liquid supply device are connected by the liquid supply path, making it possible to enter a usable state. As a result, the position of the liquid supply device relative to the main body can be maintained appropriately in the usable state, reducing the risk of malfunctions caused by misalignment of the liquid supply device relative to the main body, such as poor liquid supply due to disconnection of the liquid supply path to the main body or the liquid supply device.

[0017] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. First, an overview of a liquid ejection device 1 according to an embodiment of the present invention will be described primarily with reference to FIG. 1. Note that in FIG. 1, some components are simplified and omitted to make the configuration easier to understand. In FIG. 1, the X-axis direction is the horizontal direction and corresponds to the direction in which a support portion of a supply unit 2 that holds a roll R1 on which a medium M is wound in a roll extends. The Y-axis direction is the horizontal direction and also corresponds to the front-rear direction of the liquid ejection device 1, which is perpendicular to the X-axis direction. The Z-axis direction is the vertical direction. In the following, the direction in which an arrow points is referred to as the + direction, and the direction opposite to the arrow pointing direction is referred to as the - direction. For example, in FIG. 1, the vertically upward direction is referred to as the +Z direction, the vertically downward direction is referred to as the -Z direction, the front of the liquid ejection device 1 is referred to as the +Y direction, and the rear of the liquid ejection device 1 is referred to as the -Y direction.

[0018] As shown in FIG. 1 , the liquid ejection device 1 of this embodiment includes a main body 9, and leg frames 7 are attached to the main body 9 near both ends in the X-axis direction. The main body 9 can also be considered to include a supply unit 2, leg frames 7, a medium support unit 3 and a winding unit 6, which will be described later. Casters 13 and adjusters 14 are provided below the leg frames 7. The casters 13 can be used to easily move the liquid ejection device 1, and the adjusters 14 can be used to suitably install the liquid ejection device 1 on an installation surface G. The liquid ejection device 1 of this embodiment also includes a supply unit 2 that holds a roll R1 on the rear side, or the -Y direction, of the main body 9. The supply unit 2 supports the paper tube of the roll R1 around which the medium M is wound, sandwiching it in the X-axis direction, and supplies the medium M to a position facing the head 5, which serves as the liquid ejection unit.

[0019] In the liquid ejection device 1 of this embodiment, when the medium M is transported in the transport direction A, the supply unit 2 rotates the roll R1 in a rotation direction C. Note that, although the roll R1 used in FIG. 1 is wound so that the image forming surface M1 on which the image is formed faces outward, if a roll R1 wound so that the image forming surface M1 faces inward is used, the supply unit 2 can rotate the roll R1 in the direction opposite to the rotation direction C to feed out the medium M.

[0020] The liquid ejection device 1 of this embodiment also has a transport path for the medium M, which includes a medium support section 3 that supports the medium M on a support surface 30. The liquid ejection device 1 of this embodiment includes, as the medium support section 3, an upstream medium support section 3A, a medium support section 3B, and a downstream medium support section 3C, from upstream to downstream in the transport direction A. The liquid ejection device 1 also has a roller pair 8, which includes a drive roller and a driven roller, as a transport section for transporting the medium M in the transport direction A on the transport path. However, there are no particular limitations on the configuration of the transport section.

[0021] The liquid ejection device 1 of this embodiment also includes a head 5 as a liquid ejection unit that has a plurality of nozzles disposed at a position facing the medium support unit 3B and that ejects liquid ink from the nozzles to form an image, and a carriage 4 that carries the head 5 and is capable of moving back and forth in the width direction B. A liquid supply path 12 formed of a tube or the like is connected to the head 5, and ink is supplied to the head 5 via the liquid supply path 12 from an ink cartridge attached to a liquid supply device 100 shown in FIG. 2, the details of which will be described later. In the liquid ejection device 1 of this embodiment, the transport direction A at the position facing the head 5 on the medium support unit 3B is the +Y direction, the width direction B, which is the direction of movement of the head 5, is the direction along the X-axis, and the ink ejection direction is the -Z direction.

[0022] With the above-described configuration, the head 5 can form an image by ejecting ink from nozzles (not shown) onto the transported medium M while moving back and forth in the width direction B, which is a direction intersecting the transport direction A. The liquid ejection device 1 of this embodiment can form a desired image on the medium M by repeatedly transporting the medium M in the transport direction A by a predetermined transport amount and ejecting ink while moving the head 5 in the width direction B with the medium M stopped.

[0023] Furthermore, the downstream medium support section 3C of the medium support section 3 is provided with a heater 20 as a heating section for heating the supported surface M2 of the medium M on the side opposite the image forming surface M1. In this embodiment, the heater 20 is configured with an electric heating wire or the like, but is not limited to this configuration. Furthermore, not only the downstream medium support section 3C, but also the upstream medium support section 3A and the medium support section 3B may be provided with a medium heating section for heating the supported surface M2 of the medium M on the side opposite the image forming surface M1.

[0024] Additionally, a blower 10 is provided at a portion of the transport path facing the downstream medium support unit 3C, which dries the ink ejected from the head 5 onto the image forming surface M1 of the medium M by blowing an airflow F. The blower 10 of this embodiment includes a fan 11 that generates the airflow F, and is configured to be able to blow gas as the airflow F onto the image forming surface M1 of the medium M, but is not limited to such a configuration.

[0025] Further, downstream of the downstream medium support unit 3C in the transport direction A, a winding unit 6 is provided that winds up the medium M transported in the transport direction A into a roll to form the roll R2. In the liquid ejection device 1 of this embodiment, the supply unit 2 and the winding unit 6 have the same configuration. The medium M transported from the supply unit 2 to the winding unit 6 is transported while being applied with a predetermined tension by the winding unit 6 or the like. The winding unit 6 supports the paper tube that serves as the winding core of the roll R2 by sandwiching it in the X-axis direction and rotates the paper tube to wind up the medium M into a roll. In FIG. 1, the winding unit 6 rotates the roll R2 in the rotation direction C so that the image forming surface M1 faces outward. However, the medium M may also be wound up so that the image forming surface M1 faces inward. In this case, the winding unit 6 rotates the roll R2 in the direction opposite to the rotation direction C.

[0026] A guide bar 200 is provided between the downstream medium support unit 3C and the rewinding unit 6 in the transport direction A. The guide bar 200 has an arc-shaped contact surface 201 when viewed from the width direction B. The guide bar 200 guides the transport of the medium M by bringing the contact surface 201 into contact with the supported surface M2 of the medium M being rewound by the rewinding unit 6. However, there are no particular limitations on the configuration of the guide bar 200, and the configuration may also be such that the guide bar 200 is not provided.

[0027] As described above, the liquid ejection device 1 of this embodiment includes a head 5 that ejects ink, and the head 5 is mounted on the main body 9. The liquid ejection device 1 of this embodiment also includes a liquid supply device 100 that supplies ink to the head 5. Details of the liquid supply device 100 and the engagement portion 110 between the main body 9 and the liquid supply device 100 will be described below, mainly with reference to FIGS. 2 to 7.

[0028] The liquid supply device 100 of this embodiment is configured to be movable independently of the main body 9, and is configured to be able to supply ink to the head 5 via the liquid supply path 12. The liquid supply device 100 can be equipped with a plurality of ink cartridges filled with ink, and can connect each of the plurality of ink cartridges to a plurality of liquid supply paths 12 provided corresponding to each ink cartridge. The liquid ejection device 1 of this embodiment is then able to eject ink from each of the plurality of ink cartridges from the head 5 onto the image forming surface M1 of the medium M being transported.

[0029] As shown in FIGS. 1 to 4 , the leg frames 7 of the main body 9 of the liquid ejection device 1 of this embodiment are provided with casters 13 and adjusters 14 that movably support the main body 9 on an installation surface G. As shown in FIGS. 4 and 7 , the adjusters 14 have a joint 14A for connecting to the leg frames 7, a shaft 14B, and an installation portion 14C. The shaft 14B is configured to adjust the distance between the joint 14A and the installation portion 14C in the extension direction (Z-axis direction) to adjust the position of the main body 9 in the separation direction D from the installation surface G. By adjusting the orientation of the main body 9 (the arrangement in the separation direction D from the installation surface G) with the adjusters 14, the casters 13 are spaced apart from the installation surface G. Note that a total of four casters 13 and adjusters 14 are provided on each of the two leg frames 7, two at each location. However, by adjusting the four adjusters 14, the medium support portion 3B of the main body 9 can be positioned so that it is horizontal even if the installation surface G is not a horizontal plane.

[0030] 5 to 7, liquid supply device 100 has an engagement portion 110 that engages with main body 9. Engagement portion 110 has caster receiving portions 111 that can be positioned between casters 13 and installation surface G when main body 9 and liquid supply device 100 are engaged as shown by the two-dot chain line in FIG. 6 and in FIG. 7.

[0031] Because the liquid ejection device 1 of this embodiment is configured as described above, when moving either the liquid supply device 100 or the main body 9, the main body 9 and the liquid supply device 100 are first put into a disengaged state where they are not engaged. However, because the liquid ejection device 1 of this embodiment is configured as described above, even when the main body 9 and the liquid supply device 100 are engaged, the main body 9 and the liquid supply device 100 can be prevented from moving unexpectedly, and even if the main body 9 or the liquid supply device 100 moves, the main body 9 and the liquid supply device 100 can move in conjunction with each other. Therefore, the liquid ejection device 1 of this embodiment can properly maintain the position of the liquid supply device 100 relative to the main body 9, and can reduce the risk of the main body 9 and the liquid supply device 100 being too far apart and damaging the liquid supply path 12, or the risk of the main body 9 and the liquid supply device 100 getting too close and colliding with each other.

[0032] Furthermore, with this configuration, for example, by making the size of the caster receiving portion 111 larger than the size of the caster 13, it is possible to provide flexibility in the arrangement of the caster 13 and the caster receiving portion 111 when engaging the main body 9 with the liquid supply device 100. Therefore, with this configuration, it is possible to prevent manufacturing tolerances and the like from making it difficult to fit the caster receiving portion 111 onto the caster 13, making it difficult to engage the main body 9 with the liquid supply device 100.

[0033] Here, the liquid discharger 1 of this embodiment will be described from another perspective. As shown in FIGS. 4 to 7, when the main body 9 and the liquid supply device 100 are changed from a disengaged state in which they are not engaged to an engaged state in which they are engaged, the liquid supply device 100 moves in the direction H relative to the main body 9. When in the engaged state, the casters 13 are spaced apart from the installation surface G to prevent the main body 9 from moving unexpectedly. In the liquid discharger 1 of this embodiment, the caster receiving portion 111 is provided with a bottom surface 111A, which can be positioned between the casters 13 and the installation surface G as shown in FIG. 7. Therefore, only the bottom surface 111A, rather than the entire caster receiving portion 111, can be considered the caster receiving portion. This configuration of the liquid discharger 1 of this embodiment can improve the stability of the main body 9 and the liquid supply device 100 when they are engaged.

[0034] 2 and 3, the liquid ejection device 1 of this embodiment has a connection section 120 that connects the main body 9 and the liquid supply device 100 via the liquid supply path 12, with a main body-side connection joint section 121 provided on the main body 9 and a liquid supply device-side connection joint section 122 provided on the liquid supply device 100. The liquid supply path 12 can be extended and connected from the main body-side connection joint section 121 to the liquid supply device-side connection joint section 122. Electrical wiring is also routed along the liquid supply path 12 shown in FIGS. 2 and 3, and by connecting the main body-side connection joint section 121 and the liquid supply device-side connection joint section 122 via the liquid supply path 12, the main body 9 and the liquid supply device 100 are also electrically connected.

[0035] At connection portion 120, which connects main body 9 and liquid supply device 100 via liquid supply path 12, unexpected relative movement between main body 9 and liquid supply device 100 can easily cause breakage of liquid supply path 12. Therefore, providing a reinforcing structure to reinforce liquid supply path 12 is one way to prevent breakage of the tubes and electrical wiring that make up liquid supply path 12. However, providing such a reinforcing structure can result in increased costs and an increase in the size of the device. However, by using a configuration including engagement portion 110 configured as in this embodiment, it is possible to eliminate the need for a reinforcing structure to reinforce liquid supply path 12, thereby preventing increased costs and an increase in the size of the device.

[0036] The liquid ejection device 1 of this embodiment is configured so that, when the main body 9 and the liquid supply device 100 are in an engaged state, they can be brought into a usable state in which they are connected by the liquid supply path 12. Therefore, the liquid ejection device 1 of this embodiment can properly maintain the position of the liquid supply device 100 relative to the main body 9 when in a usable state, reducing the risk of malfunctions caused by the liquid supply device 100 being misaligned with the main body 9, such as poor liquid supply caused by the liquid supply path 12 becoming disconnected from the main body 9 or the liquid supply device 100.

[0037] As can be seen from the above explanation, the liquid ejection device 1 of this embodiment is configured so that, when in an engaged state in which the main body 9 and the liquid supply device 100 are engaged, the connection part 120 between the main body 9 and the liquid supply device 100 can be brought into a usable state in which they are connected by the liquid supply path 12, by changing from the state shown in Fig. 2 to the state shown in Fig. 3. In addition, when in the usable state, the liquid ejection device 1 of this embodiment allows relative movement between the main body 9 and the liquid supply device 100 at the connection part 120. In other words, the connection part 120 has play that allows relative movement between the main body 9 and the liquid supply device 100.

[0038] Although the liquid ejection device 1 of this embodiment is configured so that there is almost no relative movement between the main body 9 and the liquid supply device 100 when they are engaged, the liquid ejection device 1 may be configured so that there is some relative movement between the main body 9 and the liquid supply device 100 when they are engaged, i.e., so that there is some play. By configuring the liquid ejection device 1 to have some play, it is possible to reduce the risk of damage to the engagement part 110 when vibrations are applied to the main body 9 or the liquid supply device 100.

[0039] However, it is preferable that the relative movement range between the main body 9 and the liquid supply device 100 at the engagement portion 110 is narrower than the relative movement range between the main body 9 and the liquid supply device 100 at the connection portion 120. In other words, it is preferable that the play between the main body 9 and the liquid supply device 100 at the connection portion 120 of the liquid supply path 12 is larger than the play between the main body 9 and the liquid supply device 100 at the engagement portion 110. This is because, with this configuration, it is possible to prevent the liquid supply path 12 from coming off the main body 9 or the liquid supply device 100 at the connection portion 120 and to prevent the connection portion 120 from being damaged, even when the main body 9 and the liquid supply device 100 move relative to each other to the maximum extent.

[0040] The detailed configuration of the engaging portion 110 of the liquid discharger 1 of this embodiment will be described below. As shown in Fig. 5, the engaging portion 110 of this embodiment includes a caster receiving portion 111, a first sheet metal portion 112 to which the caster receiving portion 111 is attached, and a second sheet metal portion 113 that is connected to the first sheet metal portion 112 via a hinge 114 and is attached to the liquid supply device 100. The first sheet metal portion 112 can be arranged on the second sheet metal portion 113 together with the caster receiving portion 111 by rotating relative to the second sheet metal portion 113 in a rotation direction E shown in Fig. 5 with respect to the hinge 114.

[0041] Explaining from another perspective, the engagement portion 110 of this embodiment has a first sheet metal portion 112 as a folding portion provided with a caster receiving portion 111, and in an engaged state where the main body 9 and the liquid supply device 100 are engaged, the first sheet metal portion 112 is unfolded relative to the second sheet metal portion 113. In a disengaged state, the first sheet metal portion 112 is configured to be foldable so as to be positioned in the +Z direction of the second sheet metal portion 113. By configuring the liquid discharger 1 of this embodiment in this way, it is possible to prevent the engagement portion 110 from becoming a hindrance, such as by dragging the caster receiving portion 111, in a disengaged state where the main body 9 and the liquid supply device 100 are not engaged.

[0042] 5 and 6, the caster receiving portion 111 of the liquid discharger 1 of this embodiment has a wall portion surrounding the caster 13 in the +X direction, the -X direction, and the +Y direction. Specifically, when the main body 9 and the liquid supplying device 100 are engaged with each other, the wall portion surrounding the caster 13 is made of a member having three surfaces: a first side surface portion 111B and a second side surface portion 111C that constitute two surfaces facing each other in an opposing direction (X-axis direction) intersecting with the separation direction D (Z-axis direction), and a rear surface portion 111D that constitutes one surface facing in a direction (Y-axis direction) intersecting with the separation direction D and the opposing direction. This configuration can prevent the caster receiving portion 111 from coming off the caster 13 unintentionally by the user.

[0043] As shown by the two-dot chain line in FIG. 6 , the first side surface portion 111B and the second side surface portion 111C, which are two opposing surfaces of the wall portion, extend to the position where the adjuster 14 is provided when the main body 9 and the liquid supply device 100 are engaged. This configuration particularly effectively prevents the caster receiving portion 111 from coming off the caster 13 unintentionally by the user. Furthermore, in the engaged state, the first side surface portion 111B and the second side surface portion 111C act as barriers, making it difficult to adjust the adjuster 14 and difficult to ground the caster 13 and make the main body 9 movable, making it easy to maintain the positional relationship between the main body 9 and the liquid supply device 100. Furthermore, when attaching the caster receiving portion 111 to the caster 13, the first side surface portion 111B and the second side surface portion 111C, which are two opposing surfaces of the wall portion, can be used as guides, improving workability.

[0044] The present invention is not limited to the above-described embodiments, and can be realized in various configurations without departing from the spirit of the present invention. Furthermore, the technical features in the embodiments corresponding to the technical features in each aspect described in the Summary of the Invention section can be appropriately replaced or combined to solve some or all of the above-described problems or achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be deleted as appropriate. [Explanation of symbols]

[0045] 1...liquid discharge device, 2...supply section, 3...medium support section, 3A...upstream medium support section, 3B...medium support section, 3C...downstream medium support section, 4...carriage, 5...head (liquid discharge section), 6...winding section, 7...leg frame, 8...roller pair, 9...main body, 10...blow section, 11...fan, 12...liquid supply path, 13...caster, 14...adjuster, 14A...joint section, 14B...shaft section, 14C...installation section, 20...heater, 30...support surface, 100...liquid supply device, 110...engagement section, 1 11...caster receiving portion, 111A...bottom surface portion, 111B...first side portion (wall portion), 111C...second side portion (wall portion), 111D...rear surface portion (wall portion), 112...first sheet metal portion (folding portion), 113...second sheet metal portion, 114...hinge, 120...connection portion, 121...main body side connection joint portion, 122...liquid supply device side connection joint portion, 200...guide bar, 201...contact surface, G...installation surface, M...medium, M1...image forming surface, M2...supported surface, R1...roll body, R2...roll body

Claims

1. a liquid ejection unit that ejects liquid; a main body on which the liquid ejection unit is mounted; casters that movably support the main body on an installation surface; an adjuster for adjusting the position of the installation surface and the main body in a direction away from each other; a liquid supply device configured to be movable independently of the main body and supplying the liquid to the liquid discharge unit through a liquid supply path; Equipped with the liquid supply device has an engagement portion that engages with the main body, The liquid discharge device is characterized in that the engaging portion has a caster receiving portion that can be arranged between the caster and the installation surface when the main body and the liquid supply device are in an engaged state.

2. 2. The liquid ejection device according to claim 1, A liquid ejection device characterized in that, in the engaged state, the caster receiving portion has a wall portion that surrounds the caster with three surfaces: two surfaces facing each other in an opposing direction that intersects the separating direction, and one surface facing in a direction that intersects the separating direction and the opposing direction.

3. 3. The liquid ejection device according to claim 2, The liquid ejection device according to claim 1, wherein the two opposing surfaces of the wall portion extend to a position where the adjuster is provided in the engaged state.

4. The liquid ejection device according to any one of claims 1 to 3, The liquid discharge device is characterized in that the engaging portion has a folding portion provided with the caster receiving portion, and the folding portion is unfolded in the engaged state.

5. The liquid ejection device according to any one of claims 1 to 3, The liquid ejection device is configured so that, in the engaged state, the main body and the liquid supply device are connected by the liquid supply path and can be put into a usable state.

Images