Waste liquid collection device

Abstract

To facilitate maintenance of a printer, with regard to a waste liquid housing device.SOLUTION: A waste liquid housing device 1 arranged outside a printer 10 comprises a connection part 5 for connecting the waste liquid housing device 1 to the printer 10 so as to allow movement to a first position P1 on the exterior of the printer 10, and a second position P2 being outside the printer 10 and different from the first position P1.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a waste liquid collection device that is disposed outside a printing device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, inkjet recording apparatuses have been proposed that include a waste ink tank that collects waste ink generated during a cleaning operation of an inkjet head (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-202837 A Summary of the Invention [Problem to be solved by the invention]

[0004] The waste liquid storage device is disposed inside the printing device, and therefore, when the waste liquid becomes full, the user opens a cover on the side or back of the printing device, removes the waste liquid storage device, and then discards the waste liquid inside the waste liquid storage device.

[0005] For example, in a printing system in which other devices, such as a transport device that transports media and a discharge device that discharges media, are connected to the side of the outer periphery of a printing device on which the waste liquid storage device is housed, removing (replacing) the waste liquid storage device requires disconnecting the printing device from the other devices, which is time-consuming. In particular, when a printing system includes multiple printing devices arranged in series, the number of connected devices increases, which is even more time-consuming.

[0006] It is possible to place the waste liquid collection device outside the printing device, but this would block the sides and back of the printing device, making it difficult to perform maintenance on the printing device on the sides blocked by the waste liquid collection device.

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a waste liquid storage device that can facilitate the maintenance of a printing device. [Means for solving the problem]

[0008] In one aspect, the waste liquid collection device is a waste liquid collection device that is positioned outside the printing device and is provided with a connection portion for connecting the waste liquid collection device to the printing device so that the waste liquid collection device can be moved between a first position outside the printing device and a second position outside the printing device that is different from the first position. Effect of the Invention

[0009] According to this aspect, maintenance of the printing device can be facilitated. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a front view showing an example of the layout of a printing system according to an embodiment. [Diagram 2] FIG. 2 is a right rear perspective view showing the waste liquid collection device and the printing device in a first position according to an embodiment. [Diagram 3] FIG. 2 is a plan view showing the waste liquid collection device and the printing device in a first position according to an embodiment. [Figure 4] FIG. 2 is a right side view showing the waste liquid collection device and the printing device in a first position according to the embodiment. [Diagram 5] FIG. 2 is a plan view showing a waste liquid collection device (shown in both a first position and a second position) and a printing device in one embodiment. [Figure 6] FIG. 2 is a right rear perspective view showing the waste liquid collection device and the printing device in a second position according to an embodiment. [Figure 7] FIG. 2 is a right rear perspective view showing the inside of a waste liquid collecting device in a first position according to an embodiment. [Figure 8] FIG. 2 is a right rear perspective view showing the inside of a waste liquid collecting device (without a cover) in a first position in one embodiment. [Figure 9] FIG. 2 is a partial right side view perspectively showing the inside of the waste liquid collecting device (without the cover) in the first position in one embodiment. [Figure 10] FIG. 4 is a right rear perspective view showing a first receiving portion in one embodiment. [Figure 11] FIG. 4 is a right rear perspective view showing a second receiving portion in one embodiment. [Figure 12] FIG. 2 is a right rear perspective view showing the cover in the embodiment. [Figure 13] FIG. 2 is a partial plan view perspectively showing the inside of a waste liquid collecting device (without a cover) in a first position in one embodiment. [Figure 14] FIG. 4 is a partial plan view perspectively showing the inside of a waste liquid collection device (with a first waste liquid pipe, a second waste liquid pipe, and a cover omitted) in a second position in one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A waste liquid storage device according to an embodiment of the present invention will now be described with reference to the drawings.

[0012] Fig. 1 is a front view showing an example of the arrangement of a printing system 100. Note that the front-rear direction, left-right direction, and up-down direction shown in Fig. 1 and Figs. 2 to 14 described later are, for example, horizontal directions, and the up-down direction is vertical directions.

[0013] The printing system 100 includes two printing devices 10, a supply device 20, two intermediate conveying devices 30, and a discharge device 40. Each device is connected to an adjacent device, and is arranged in series in the following order in the conveying direction (rightward) of a medium M, which is, for example, paper: supply device 20, printing device 10, intermediate conveying device 30, printing device 10, intermediate conveying device 30, discharge device 40.

[0014] The printing system 100 also includes a waste liquid collection device 1 disposed to the right rear of each of the two printing devices 10. The waste liquid collection device 1 will be described in detail later.

[0015] The two printing devices 10 are inkjet printing devices that perform printing using ink. The printing devices 10 have a rectangular parallelepiped shape. Usually, the printing device 10 does not have a perfect rectangular parallelepiped shape because each part, such as the insertion port and ejection port of the medium M, has unevenness, each of the outer surfaces (right side surface 11, back surface 12, etc.) has a step, or the sides between each surface are curved. Therefore, even if each surface of the printing device 10 has unevenness or a step, or each side is curved, the shape of the printing device 10 can be considered to be a rectangular parallelepiped shape. Note that the printing device 10 may be any printing device that discharges waste liquid, and may be a printing device that uses ink to print (for example, a stencil printing device) other than an inkjet printing device, or a printing device that does not use ink for printing. If the printing device does not use ink for printing, cleaning liquid and the like in the printing device becomes waste liquid.

[0016] As one example, the printing device 10 on the upstream side (left side) in the transport direction prints on the front side of the medium M, and the printing device 10 on the downstream side (right side) in the transport direction prints on the back side of the medium M. Alternatively, the printing device 10 on the downstream side prints on the medium M with ink different from that of the printing device 10 on the upstream side, on the same side or the opposite side to the side on which the printing device 10 on the upstream side prints.

[0017] The medium supplying device 20 supplies the medium M, which is loaded on each of two loading stages, an upper stage and a lower stage, to the printing device 10.

[0018] The two intermediate conveying devices 30 convey the medium M discharged from the printing device 10. Note that the intermediate conveying device 30 disposed between the two printing devices 10 may be omitted, and the two printing devices 10 may be connected to each other.

[0019] The discharge device 40 discharges the medium M discharged from the intermediate conveyance device 30 on the downstream side onto a stacking table.

[0020] 2 to 4 are a right rear perspective view, a plan view, and a right side view showing the waste liquid collection device 1 and the printing device 10 at the first position P1.

[0021] FIG. 5 is a plan view showing the waste liquid collection device 1 (shown at both the first position P1 and the second position P2) and the printing device 10. As shown in FIG.

[0022] FIG. 6 is a right rear perspective view showing the waste liquid collection device 1 and the printing device 10 in the second position P2.

[0023] FIG. 7 is a perspective view from the right rear side showing the inside of the waste liquid collection device 1 at the first position P1.

[0024] FIG. 8 is a perspective view from the right rear side showing the inside of the waste liquid collecting device 1 (without the cover 7) at the first position P1.

[0025] FIG. 9 is a partial right side view perspectively showing the inside of the waste liquid collecting device 1 (without the cover 7) at the first position P1.

[0026] 10 to 12 are right rear perspective views showing the first receiving portion 6a, the second receiving portion 6b, and the cover 7. Note that the second receiving portion 6b and the cover 7 are fixed to the rotatable waste liquid housing 2, and the front-rear direction, left-right direction, and up-down direction shown in Figs. 11 and 12 are directions when the waste liquid storage device 1 is in the first position P1.

[0027] FIG. 13 is a partial plan view perspectively showing the inside of the waste liquid collecting device 1 (without the cover 7) at the first position P1.

[0028] FIG. 14 is a partial plan view perspectively showing the inside of the waste liquid collection device 1 (with the first waste liquid pipe 3, the second waste liquid pipe 4, and the cover 7 omitted) at the second position P2 in one embodiment.

[0029] 2 to 4, the waste liquid collection device 1 includes a waste liquid housing 2, a first waste liquid pipe 3 and a second waste liquid pipe 4 (see FIGS. 7 to 9 and 13 described below), a connection part 5, an effluent liquid receiver 6, and a cover 7. The waste liquid collection device 1 is disposed outside the printing device 10 (for example, on the right side of the rear surface of the printing device 10 when in the first position P1 as shown in FIGS. 2 to 4).

[0030] The waste liquid housing 2 houses the waste liquid tank 2a shown in Figs. 7 to 9. This waste liquid tank 2a stores the waste liquid discharged from the printing device 10 and flowing through the first waste liquid pipe 3 and the second waste liquid pipe 4. The waste liquid flowing through the first waste liquid pipe 3 is, for example, ink discharged during purging of the inkjet head. The waste liquid flowing through the second waste liquid pipe 4 is, for example, excess ink in the pressurized tank and the negative pressure tank of the ink circulation path, and ink dripping when the ink cartridge is removed. The waste liquid housing 2 has a rectangular parallelepiped shape that houses the waste liquid tank 2a, and the waste liquid tank 2a can be removed by opening the top cover, but the waste liquid tank 2a may be housed in the waste liquid housing 2 in a state where it is exposed to the outside (for example, a state where the top of the waste liquid tank 2a is exposed).

[0031] 7 and 8, when the waste liquid collection device 1 is in the first position P1, a sensor 2b is disposed in the right rear portion inside the waste liquid housing 2 for detecting the presence or absence of the waste liquid tank 2a and the amount of waste liquid (e.g., full). A detection signal from this sensor 2b is sent to a control unit (processor) of the printing device 10 via wiring (not shown). Note that it is preferable that the wiring extend from the waste liquid housing 2 to the printing device 10 along the upper portion of the first waste liquid pipe 3 or the second waste liquid pipe 4, and bend while remaining connected to the printing device 10 and the sensor 2b (or the control unit of the waste liquid housing 2) as the waste liquid housing 2 rotates.

[0032] As shown in FIG. 5, the waste liquid collection device 1 is arranged to be rotatable (one example of movable) between a first position P1 (see FIGS. 2 to 4) outside the printing device 10 where the waste liquid housing 2 is arranged along the printing device 10 (for example, the rear surface 12 of the printing device 10) and a second position P2 (see FIG. 6) outside the printing device 10, which is a position rotated by, for example, 90 degrees from the first position P1. The second position P2 of the waste liquid collection device 1 is, for example, diagonally to the right rear of the printing device 10. By rotating from the first position P1 arranged along the rear surface 12 of the printing device 10 to the second position P2, the waste liquid housing 2 can be moved to a position away from the rear cover 12a (one example of exterior) provided on the rear surface 12 as shown in FIG. 6. This makes it possible to remove the rear cover 12a and perform maintenance inside the printing device 10. The second position P2 of the waste liquid collection device 1 may also be a position where the waste liquid housing 2 is arranged along the printing device 10 (for example, the right side surface 11 of the printing device 10). Here, when the waste liquid housing 2 is disposed along the printing device 10 at the first position P1 (or the second position P2) of the waste liquid collection device 1, it may be in contact with the printing device 10 or may be slightly spaced apart. In addition, it is preferable that the printing device 10 is maintained when the waste liquid collection device 1 is at least one of the first position P1 and the second position P2. Also, unlike the example of FIG. 5, the waste liquid housing 2 may be rotated so that a part of the waste liquid housing 2 at the first position P1 overlaps with a part of the waste liquid housing 2 at the second position P2. Even in this case, since the waste liquid collection device 1 moves from the first position P1 to the second position P2 by the rotation of the waste liquid housing 2, the second position P2 can be called a position different from the first position P1 or a position separated from the first position P1. In addition, it is preferable that a caster such as a roller is provided at the bottom of the waste liquid housing 2 to facilitate manual rotation of the waste liquid housing 2.

[0033] The first waste liquid pipe 3 and the second waste liquid pipe 4 shown in Figs. 7 to 9 are connected to the printing device 10 and the waste liquid tank 2a. The first waste liquid pipe 3 flows the waste liquid discharged from the right side surface 11 of the printing device 10, only a part of which is shown in Figs. 7 to 9, to the waste liquid tank 2a. The second waste liquid pipe 4 flows the waste liquid discharged from the right side surface 11 of the printing device 10, rearward of the connection part with the first waste liquid pipe 3, to the waste liquid tank 2a. The second waste liquid pipe 4 passes directly above the first waste liquid pipe 3. Note that, in this embodiment, an example in which two waste liquid pipes, the first waste liquid pipe 3 and the second waste liquid pipe 4, are arranged as an example of waste liquid pipes, is described. However, if the discharge path of the waste liquid of the printing device 10 can be made common and the discharge outlet of the waste liquid from the printing device 10 can be made single, the first waste liquid pipe 3 and the second waste liquid pipe 4 can be changed to a single waste liquid pipe.

[0034] The first waste liquid pipe 3 and the second waste liquid pipe 4 have straight portions 3a, 4a that flow straight along the right side surface 11 (one example of the first surface) of the printing device 10, and curved portions 3b, 4b that are located downstream of the straight portions 3a, 4a in the flow path of the waste liquid and curve as the waste liquid housing 2 rotates. The first waste liquid pipe 3 and the second waste liquid pipe 4 are flexible, and the straight portions 3a, 4a and the curved portions 3b, 4b are preferably formed integrally. As described above, since the second waste liquid pipe 4 is connected to the printing device 10 behind the first waste liquid pipe 3, the excess portion of the curved portion 4b of the second waste liquid pipe 4 is curved in a loop shape inside the waste liquid housing 2, as shown in Figures 7 and 8. However, if the second waste liquid pipe 4 is a pipe shorter than the first waste liquid pipe 3, the loop-shaped curved portion of the curved portion 4b can be omitted.

[0035] 2, 4, 7, and 8 connects the waste liquid casing 2 to the printing device 10 so as to be rotatable between a first position P1 of the waste liquid collection device 1 arranged along the printing device 10 and a second position P2 of the waste liquid collection device 1 different from the first position P1, as described above, while the waste liquid tank 2a remains connected to the first waste liquid pipe 3 and the second waste liquid pipe 4. Note that the waste liquid collection device 1 moves between the first position P1 and the second position P2 by the rotation of the waste liquid casing 2, but the waste liquid casing 2 (waste liquid collection device 1) may also be movable by linear movement, for example, along a guide rail.

[0036] The connecting portion 5 includes, for example, a bracket 5a, an arm 5b, and a rotating shaft portion 5c.

[0037] Bracket 5a is fixed to waste liquid housing 2, and has two horizontal portions, an upper portion and an lower portion, which protrude horizontally. Bracket 5a supports the upper and lower ends of rotation shaft portion 5c, which extends in the vertical direction, with the above-mentioned two horizontal portions.

[0038] The arm 5b is fixed to the right side surface 11 of the printing device 10 and extends straight to the rear of the printing device 10. A rotating shaft portion 5c passes through the rear end of the arm 5b.

[0039] The upper and lower ends of the rotating shaft 5c are supported by the bracket 5a. The rotating shaft 5c functions as the center of rotation C of the waste liquid housing 2. This center of rotation C can be considered as a vertical line passing through the rotating shaft 5c as shown in Fig. 8, and intersects with an imaginary line V passing through the straight portions 3a, 4a of the first waste liquid pipe 3 and the second waste liquid pipe 4 as shown in Fig. 13. Note that the imaginary line V only needs to pass through one of the straight portions 3a, 4a, and does not have to pass through the center of the straight portions 3a, 4a.

[0040] As described above, the first waste liquid pipe 3 and the second waste liquid pipe 4 (straight sections 3a, 4a) allow the waste liquid to flow along the right side surface 11 (an example of the first surface) of the printer 10. The first position P1 of the waste liquid casing 2 is a position along the back surface 12 (an example of the second surface) adjacent to the right side surface 11 across the right rear edge 13 (an example of one side of the periphery of the first surface) of the printer 10. The rotation center C (rotation shaft section 5c) of the waste liquid casing 2 is located between the area facing the right side surface 11 (i.e., the right side of the printer 10) and the area facing the back surface 12 (i.e., the rear of the printer 10) (i.e., the right rear of the printer 10), and is parallel to the right rear edge 13.

[0041] 8, 9, etc. receives the effluent flowing out from the first waste liquid pipe 3 and the second waste liquid pipe 4. This effluent is, for example, waste liquid that flows out from the connection part between the first waste liquid pipe 3 and the second waste liquid pipe 4 and the printing device 10 and runs down the first waste liquid pipe 3 or the second waste liquid pipe 4, since it is rare for the first waste liquid pipe 3 and the second waste liquid pipe 4 to be damaged and cause the waste liquid to leak.

[0042] The effluent receiver 6 has a first receiver 6a (see FIG. 10) and a second receiver 6b (see FIG. 11). The first receiver 6a is fixed to the printing device 10 (right side surface 11) and is disposed below the straight portions 3a, 4a of the first waste liquid pipe 3 and the second waste liquid pipe 4. The second receiver 6b is fixed to the waste liquid housing 2 and is disposed below the curved portions 3b, 4b of the first waste liquid pipe 3 and the second waste liquid pipe 4. Since the first receiver 6a has a horizontal U-shape as shown in FIG. 10, it is disposed so as to cover not only the lower portion of the straight portions 3a, 4a but also the right and upper portions of the straight portions 3a, 4a. When the first receiver 6a is disposed between the printing device 10 and another device (for example, an intermediate conveying device 30, a discharge device 40, an inspection device, a post-processing device), it is desirable that the width of the first receiver 6a is narrow in the direction in which they adjoin (the left-right direction).

[0043] As shown in Fig. 4, the first receiving portion 6a is inclined downward at an angle θ from the horizontal (the horizontal line is shown by a dashed line in Fig. 4) toward the waste liquid housing 2 on the right side surface 11 of the printing device 10. This is because the flow path of the waste liquid is inclined downward toward the downstream side so that the waste liquid flows by its own weight inside the first waste liquid pipe 3 and the second waste liquid pipe 4.

[0044] 9, 13, and 14, the second receiving portion 6b is disposed below the first receiving portion 6a so as to receive the effluent flowing from the first receiving portion 6a throughout the entire rotation range (the first position P1 and the second position P2 of the waste liquid storage device 1, and intermediate positions therebetween) of the waste liquid housing 2. Note that, similar to the first receiving portion 6a, the second receiving portion 6b is also preferably inclined downward from the horizontal toward the waste liquid housing 2.

[0045] As shown in Fig. 7, the cover 7 (see Fig. 12) is fixed to the waste liquid housing 2 and is disposed so as to cover the upper and right rear of the curved portions 3b, 4b between the first receiving portion 6a and the waste liquid housing 2. Note that in cases where the cover 7 interferes with the first receiving portion 6a or the second receiving portion 6b when the waste liquid housing 2 rotates between the first position P1 and the second position P2 of the waste liquid storage device 1, it is advisable to rotate the waste liquid housing 2 with the cover 7 removed as shown in Fig. 8 and other figures.

[0046] In the above description, the printing system 100 includes two printing devices 10 and two waste liquid storage devices 1, but the printing system may include a single waste liquid storage device 1 and a single printing device 10. When the printing system includes the waste liquid storage device 1, the printing device 10, and other devices (for example, an intermediate conveying device 30, a discharge device 40, an inspection device, a post-processing device), the first waste liquid pipe 3 and the second waste liquid pipe 4 of the waste liquid storage device 1 may be configured to flow waste liquid between the printing device 10 and the other devices.

[0047] In the above description, the rotation center C of the waste liquid housing 2 is in the vertical direction, but the rotation center C of the waste liquid housing 2 may be in a direction other than the vertical direction (for example, the horizontal direction).

[0048] In the present embodiment described above, the waste liquid storage device 1, which is disposed outside the printing device 10, is provided with a connecting portion 5 for connecting the waste liquid storage device 1 to the printing device 10 so as to be movable between a first position P1 outside the printing device 10 and a second position P2 outside the printing device 10 and different from the first position P1.

[0049] As a result, firstly, by disposing the waste liquid collection device 1 outside the printing device 10, for example, it becomes easy to remove and replace the full waste liquid tank 2a. Also, since the waste liquid collection device 1 can be moved between the first position P1 and the second position P2, for example, when the waste liquid collection device 1 is in one position (for example, the second position P2), it is possible to remove the rear cover 12a and perform maintenance on the inside of the printing device 10. Therefore, according to this embodiment, it is possible to easily perform maintenance on the printing device 10.

[0050] In this embodiment, the waste liquid collection device 1 further includes a waste liquid housing 2, and a first waste liquid pipe 3 and a second waste liquid pipe 4 which are examples of waste liquid pipes. The waste liquid housing 2 houses a waste liquid tank 2a. The first waste liquid pipe 3 and the second waste liquid pipe 4 are connected to the printing device 10 and the waste liquid tank 2a, and allow waste liquid discharged from the printing device 10 to flow into the waste liquid tank 2a. The connection unit 5 connects the waste liquid housing 2 to the printing device 10 so as to be rotatable between a first position P1 and a second position P2 of the waste liquid collection device 1.

[0051] Therefore, by rotating the waste liquid housing 2, which houses the waste liquid tank 2a connected to the first waste liquid pipe 3 and the second waste liquid pipe 4, while it is connected to the printing device 10, the waste liquid storage device 1 can be easily moved to a position (for example, the second position P2) where maintenance of the printing device 10 can be easily performed. Therefore, maintenance of the printing device 10 can be made easier.

[0052] In this embodiment, the first waste liquid pipe 3 and the second waste liquid pipe 4 flow waste liquid along the right side surface 11 (an example of a first surface) of the printer 10, which has a rectangular parallelepiped shape. The first position P1 of the waste liquid storage device 1 is a position where the waste liquid housing 2 is along the back surface 12 (an example of a second surface) of the printer 10 adjacent to the right side surface 11, with one side (right rear side 13) of the periphery of the right side surface 11 of the printer 10 in between. The connecting portion 5 is disposed so that the rotation center C of the waste liquid housing 2 is parallel to the right rear side 13 between the area facing the right side surface 11 and the area facing the rear surface 12.

[0053] This allows the waste liquid housing 2 to be moved away from the rear surface 12 of the printing device 10, which is aligned with the waste liquid storage device 1 at the first position P1, at the second position P2, making it easier to perform maintenance on the inside of the printing device 10, for example, by removing the rear cover 12a.

[0054] In this embodiment, the waste liquid storage device 1 further includes an effluent receiver 6 for receiving the effluent flowing out from the first waste liquid pipe 3 and the second waste liquid pipe 4. The first waste liquid pipe 3 and the second waste liquid pipe 4 have straight portions 3a, 4a that go straight, and curved portions 3b, 4b that are located downstream of the straight portions 3a, 4a in the flow path of the waste liquid and curve as the waste liquid housing 2 rotates. The effluent receiver 6 has a first receiving portion 6a and a second receiving portion 6b. The first receiving portion 6a is fixed to the printing device 10 and is disposed below the straight portions 3a, 4a of the first waste liquid pipe 3 and the second waste liquid pipe 4. The second receiving portion 6b is fixed to the waste liquid housing 2 and is disposed below the curved portions 3b, 4b of the first waste liquid pipe 3 and the second waste liquid pipe 4. The second receiving portion 6b is disposed below the first receiving portion 6a so as to receive the effluent flowing from the first receiving portion 6a over the entire rotation range of the waste liquid housing 2.

[0055] This makes it possible to prevent the effluent flowing out from the first waste liquid pipe 3 and the second waste liquid pipe 4 from leaking to the outside, even if the waste liquid housing 2 rotates between the first position P1 and the second position P2 of the waste liquid storage device 1.

[0056] In this embodiment, the first and second waste liquid pipes 3 and 4 have straight sections 3a and 4a that go straight, and curved sections 3b and 4b that are located downstream of the straight sections 3a and 4a in the flow path of the waste liquid and curve as the waste liquid casing 2 rotates. The connecting section 5 is disposed so that the rotation center C of the waste liquid casing 2 intersects with an imaginary straight line V that passes through the straight sections 3a and 4a of the first and second waste liquid pipes 3 and 4.

[0057] This can suppress the change in the piping length of the first drainage pipe 3 and the second drainage pipe 4 caused by the rotation of the drainage housing 2. Therefore, even if the straight portions 3a, 4a and the curved portions 3b, 4b are integrated in the first drainage pipe 3 and the second drainage pipe 4, it is possible to prevent the first drainage pipe 3 and the second drainage pipe 4 and the wiring from being stressed, causing problems such as clogging or disconnection. In addition, compared to a case where a joint is provided between the straight portions 3a, 4a and the curved portions 3b, 4b, the first drainage pipe 3 and the second drainage pipe 4 can be configured simply. However, when a joint is provided between the straight portions 3a, 4a and the curved portions 3b, 4b, the flow path of the waste liquid is narrowed inside the joint, so that flow path resistance occurs, or it becomes impossible to narrow the gap between the right side surface 11 of the printing device 10 and an adjacent device (for example, the intermediate conveying device 30) in order to enlarge the pipe path of the joint. On the other hand, in this embodiment, the arrangement of joints can be omitted, which makes it possible to avoid flow path resistance caused by the arrangement of joints and to reduce the distance between the printing device 10 and adjacent devices.

[0058] The present invention is not limited to the above-described embodiment as it is, and the components can be modified and embodied without departing from the gist of the invention in the implementation stage. In addition, various inventions can be formed by appropriate combinations of the multiple components disclosed in the above-described embodiment. For example, all the components shown in the embodiment may be appropriately combined. Of course, various modifications and applications are possible without departing from the spirit of the invention. The invention described in the claims at the time of filing of this application is appended below.

[0059] [Appendix 1] A waste liquid storage device disposed outside the printing device, A connecting portion for connecting the waste liquid collecting device to the printing device so as to be movable between a first position outside the printing device and a second position outside the printing device and different from the first position. A waste liquid storage device comprising:

[0060] [Appendix 2] a waste liquid housing that houses a waste liquid tank; a waste liquid pipe connected to the printing device and the waste liquid tank, for allowing waste liquid discharged from the printing device to flow into the waste liquid tank; The connecting portion connects the waste liquid housing to the printing device so as to be rotatable between the first position and the second position of the waste liquid collecting device. 2. The waste liquid storage device according to claim 1.

[0061] [Appendix 3] the waste liquid pipe allows the waste liquid to flow along a first surface of the printing device having a rectangular parallelepiped shape; the first position of the waste liquid storage device is a position where the waste liquid housing is along a second surface of the printing device adjacent to the first surface across one side of a periphery of the first surface of the printing device; The connecting portion is disposed so that a rotation center of the waste liquid housing is parallel to the one side between a region facing the first surface and a region facing the second surface. 3. The waste liquid storage device according to claim 2.

[0062] [Appendix 4] Further, an effluent receiver is provided for receiving effluent flowing out from the waste liquid pipe, the waste liquid pipe has a straight portion that moves straight and a curved portion that is located downstream of the straight portion in the flow path of the waste liquid and curves as the waste liquid casing rotates; the outflow liquid receiver has a first receiver portion fixed to the printing device and disposed below the straight portion of the waste liquid pipe, and a second receiver portion fixed to the waste liquid housing and disposed below the curved portion of the waste liquid pipe, The second receiving portion is disposed below the first receiving portion so as to receive the outflow liquid flowing from the first receiving portion throughout the entire rotation range of the waste liquid housing. 4. The waste liquid storage device according to claim 2 or 3.

[0063] [Appendix 5] the waste liquid pipe has a straight portion that moves straight and a curved portion that is located downstream of the straight portion in the flow path of the waste liquid and curves as the waste liquid casing rotates; The connecting portion is disposed so that a rotation center of the waste liquid casing intersects with an imaginary straight line passing through the straight portion of the waste liquid pipe. 5. The waste liquid storage device according to claim 2, [Explanation of symbols]

[0064] 1 Waste liquid collection device 2 Waste liquid housing 2a Waste liquid tank 2b Sensor 3. First waste pipe 3a Straight section 3b Curved part 4. Second waste pipe 4a Straight section 4b Curved section 5 Connecting part 5a Bracket 5b Arm 5c Rotating shaft 6 Spillage receiver 6a First receiving part 6b Second receiving part 7 Cover 10 Printing device 11 Right side (first side) 12 Back (2nd side) 12a Rear cover 13 Right rear edge 20 Feeding device 30 Intermediate conveying device 40 Ejector 100 Printing System C Rotation center P1 1st position P2 2nd position M medium V Imaginary line

Claims

1. A waste liquid storage device disposed outside the printing device, a connecting portion for connecting the waste liquid collecting device to the printing device so as to be movable between a first position outside the printing device and a second position outside the printing device and different from the first position; a waste liquid housing that houses a waste liquid tank; a waste liquid pipe connected to the printing device and the waste liquid tank, for allowing waste liquid discharged from the printing device to flow into the waste liquid tank; the connecting portion connects the waste liquid housing to the printing device so as to be rotatable between the first position and the second position of the waste liquid storage device; The waste liquid pipe includes a first waste liquid pipe and a second waste liquid pipe passing directly above the first waste liquid pipe, Each of the first waste liquid pipe and the second waste liquid pipe has a straight portion that flows straight along the printing device outside the printing device, and a curved portion that is located downstream of the straight portion in the flow path of the waste liquid and curves as the waste liquid housing rotates. A waste liquid storage device characterized by:

2. A waste liquid storage device disposed outside a printing device, a connecting portion for connecting the waste liquid collecting device to the printing device so as to be movable between a first position outside the printing device and a second position outside the printing device and different from the first position; a waste liquid housing that houses a waste liquid tank; a waste liquid pipe connected to the printing device and the waste liquid tank, for allowing waste liquid discharged from the printing device to flow into the waste liquid tank; the connecting portion connects the waste liquid housing to the printing device so as to be rotatable between the first position and the second position of the waste liquid storage device; the waste liquid pipe allows the waste liquid to flow along a first surface of the printing device having a rectangular parallelepiped shape; the first position of the waste liquid storage device is a position where the waste liquid housing is aligned with a second surface of the printing device adjacent to the first surface across one side of a periphery of the first surface of the printing device; The connecting portion is disposed such that a rotation center of the waste liquid housing is parallel to the one side between a region facing the first surface and a region facing the second surface. A waste liquid storage device characterized by:

3. A waste liquid storage device disposed external to a printing device, comprising: a connecting portion for connecting the waste liquid collecting device to the printing device so as to be movable between a first position outside the printing device and a second position outside the printing device and different from the first position; a waste liquid housing that houses a waste liquid tank; a waste liquid pipe connected to the printing device and the waste liquid tank, for allowing waste liquid discharged from the printing device to flow into the waste liquid tank; the connecting portion connects the waste liquid housing to the printing device so as to be rotatable between the first position and the second position of the waste liquid storage device; Further, an effluent receiver is provided for receiving effluent flowing out from the waste liquid pipe, the waste liquid pipe has a straight portion that moves straight and a curved portion that is located downstream of the straight portion in the flow path of the waste liquid and curves as the waste liquid casing rotates; the outflow liquid receiver has a first receiving portion fixed to the printing device and disposed below the straight portion of the drain pipe, and a second receiving portion fixed to the drain pipe housing and disposed below the curved portion of the drain pipe, The second receiving portion is disposed below the first receiving portion so as to receive the outflow liquid flowing from the first receiving portion over the entire rotation range of the waste liquid housing. A waste liquid storage device characterized by:

4. A waste liquid storage device disposed external to a printing device, comprising: a connecting portion for connecting the waste liquid collecting device to the printing device so as to be movable between a first position outside the printing device and a second position outside the printing device and different from the first position; a waste liquid housing that houses a waste liquid tank; a waste liquid pipe connected to the printing device and the waste liquid tank, for allowing waste liquid discharged from the printing device to flow into the waste liquid tank; the connecting portion connects the waste liquid housing to the printing device so as to be rotatable between the first position and the second position of the waste liquid storage device; the waste liquid pipe has a straight portion that moves straight and a curved portion that is located downstream of the straight portion in the flow path of the waste liquid and curves as the waste liquid casing rotates; The connecting portion is disposed so that a rotation center of the waste liquid casing intersects with an imaginary straight line passing through the straight portion of the waste liquid pipe. A waste liquid storage device characterized by:

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