Recording device

Abstract

To be able to prevent different kinds of liquid from mixing.SOLUTION: A recording device comprises: a recording part having a recording head that can discharge first liquid and second liquid; a first supply passage for supplying liquid from a first storage part storing the first liquid to the recording head; a second supply passage for supplying liquid from a second storage part storing the second liquid to the recording head; a first joint part jointing a first supply port provided in the recording part to the first supply passage; and a second joint part jointing a second supply port provided in the recording part to the second supply passage, where a wall is formed between the first supply port and the second supply port, in the recording part.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a recording device for recording an image. [Background technology]

[0002] In some conventional inkjet recording devices, an ink cartridge that stores ink and a head that ejects ink are connected by an ink tube, and an ink supply port of the head and the ink tube are connected via an attachment. In such a configuration, the attachment may be removed during maintenance such as head replacement or adjustment, and ink may drip from the attachment when the attachment is removed. Patent Document 1 discloses a configuration that prevents liquid from flowing into the wiring connection part of the head by providing a guide wall to guide the dripping ink. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-30121 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the configuration of Patent Document 1, when multiple ink supply ports are provided to use a recording head capable of ejecting ink of multiple colors, there is a risk that ink that drips when attaching or detaching an attachment may drip into an ink supply port of another color, which may result in different types of ink mixing, for example.

[0005] The present invention has been made in consideration of the above problems, and has an object to prevent different types of liquids from mixing with each other. [Means for solving the problem]

[0006] In order to solve the above problems, a recording device according to the present invention comprises: ink and the second ink A recording head capable of ejecting And the head joint, A recording unit having the first ink The first one to store tank to the recording head The first ink The first to supply tube And the second ink The second one stores tank to the recording head The second ink The second to supply tube and, a tube joint to which the ink cartridge is connected and which is connectable to the head joint, the head joint being configured to supply the first ink to the first tube. A first supply port; a second ink supply port arranged below the first ink supply port and configured to supply the second ink to the second tube; A second supply port; a first side wall provided with a first ink supply port, a second side wall adjacent to the first side wall, a first guide wall provided between the first supply port and the second supply port, protruding from the first side wall and guiding the first ink dripping from the first supply port, and a second guide wall protruding from the second side wall, connected to the first guide wall and guiding the first ink. A recording device comprising: Effect of the Invention

[0007] According to the present invention, it is possible to prevent different types of liquids from being mixed with each other. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a diagram illustrating a standby state of the inkjet recording apparatus. [Diagram 2] FIG. 2 is a block diagram showing the configuration of a control system in the inkjet printing apparatus. [Diagram 3] FIG. 2 is a diagram illustrating a printing state of the inkjet printing apparatus. [Figure 4] FIG. 2 is a diagram showing a maintenance state of the inkjet recording apparatus. [Diagram 5] FIG. 2 is a schematic diagram illustrating a configuration of an ink supply unit. [Figure 6] FIG. 2 is a schematic perspective view illustrating the connection between a head joint and a tube joint according to the first embodiment. [Figure 7] FIG. 2 is an enlarged perspective view showing the configuration around an ink supply port according to the first embodiment. [Figure 8] FIG. 2 is a schematic side view showing the configuration around an ink supply port according to the first embodiment. [Figure 9]FIG. 2 is an enlarged perspective view showing the configuration around an ink supply port according to the first embodiment. [Figure 10] 13A and 13B are schematic diagrams illustrating the connection between a head joint and a tube joint according to a second embodiment. [Figure 11] FIG. 11 is an enlarged schematic diagram showing the peripheral configuration of a connection portion between a head joint and a tube joint according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the following embodiments do not limit the present invention, and not all of the combinations of features described in the embodiments are necessarily essential to the solution of the present invention. Furthermore, the relative arrangements, shapes, etc. of the components described in the embodiments are merely examples, and are not intended to limit the scope of the present invention to only those.

[0010] [First embodiment] 1 is a diagram showing the internal configuration of an inkjet recording apparatus 1 (hereinafter, recording apparatus 1) used in this embodiment. In the figure, the x direction indicates the horizontal direction, the y direction (perpendicular to the paper surface) indicates the direction in which ejection ports are arranged in a recording head 8 (described later), and the z direction indicates the vertical direction.

[0011] The recording device 1 is a multifunction device equipped with a print unit 2 and a scanner unit 3, and various processes related to recording and reading operations can be executed by the print unit 2 and the scanner unit 3 individually or in conjunction with each other. The scanner unit 3 is equipped with an ADF (automatic document feeder) and an FBS (flatbed scanner), and can read documents automatically fed by the ADF and read (scan) documents placed on the platen of the FBS by a user. Note that although this embodiment is a multifunction device equipped with both the print unit 2 and the scanner unit 3, it may be configured not to include the scanner unit 3. FIG. 1 shows the recording device 1 in a standby state in which neither recording nor reading operations are being performed.

[0012] In the printing section 2, a first cassette 5A and a second cassette 5B for accommodating recording media (cut sheets) S are removably installed at the bottom vertically below the housing 4. The first cassette 5A accommodates relatively small recording media up to A4 size, while the second cassette 5B accommodates relatively large recording media up to A3 size, stacked flat. A first feeding unit 6A is provided near the first cassette 5A for separating and feeding the accommodated recording media one by one. Similarly, a second feeding unit 6B is provided near the second cassette 5B. When a recording operation is performed, the recording media S is selectively fed from one of the cassettes.

[0013] The transport roller 7, discharge roller 12, pinch roller 7a, spur 7b, guide 18, inner guide 19, and flapper 11 constitute a transport mechanism for guiding the recording medium S in a predetermined direction. The transport rollers 7 are disposed upstream and downstream of the recording head 8, and are drive rollers driven by a transport motor (not shown). The pinch roller 7a is a driven roller that nips the recording medium S together with the transport roller 7 and rotates. The discharge roller 12 is disposed downstream of the transport roller 7, and is a drive roller that is driven by a transport motor (not shown). The spur 7b, together with the transport roller 7 and the discharge roller 12 disposed downstream of the recording head 8, pinches and transports the recording medium S.

[0014] The guide 18 is provided on the transport path of the recording medium S and guides the recording medium S in a predetermined direction. The inner guide 19 is a member extending in the y direction, has a curved side, and guides the recording medium S along the side. The flapper 11 is a member for switching the direction in which the recording medium S is transported during double-sided recording operation. The discharge tray 13 is a tray for stacking and holding the recording medium S discharged by the discharge roller 12 after the recording operation is completed.

[0015] The recording head 8 of this embodiment is a full-line type color inkjet recording head (line head), and a plurality of ejection ports for ejecting ink according to recording data are arranged in the y direction in FIG. 1 in a width corresponding to the recording medium S. That is, the recording head 8 is configured to be able to eject ink of a plurality of colors. When the recording head 8 is in the standby position, the ejection port surface 8a of the recording head 8 faces vertically downward as shown in FIG. 1 and is capped (covered) by the cap unit 10. When performing a recording operation, the orientation of the recording head 8 is changed by the print controller 202 described later so that the ejection port surface 8a faces the platen 9. The platen 9 is formed of a flat plate extending in the y direction, and supports the recording medium S on which the recording operation is performed by the recording head 8 from the rear. The movement of the recording head 8 from the standby position to the recording position will be described in detail later.

[0016] The ink tank unit 14 stores each of the four colors of ink to be supplied to the recording head 8. The ink supply unit 15 is provided in the middle of a flow path connecting the ink tank unit 14 and the recording head 8, and adjusts the pressure and flow rate of the ink in the recording head 8 to appropriate ranges. In this embodiment, a circulation type ink supply system is adopted, and the ink supply unit 15 adjusts the pressure of the ink supplied to the recording head 8 and the flow rate of the ink collected from the recording head 8 to appropriate ranges.

[0017] The maintenance unit 16 includes a cap unit 10 and a wiping unit 17, and operates these at a predetermined timing to perform a maintenance operation on the recording head 8. The maintenance operation will be described in detail later.

[0018] 2 is a block diagram showing the control configuration of the recording apparatus 1. The control configuration mainly comprises a print engine unit 200 that controls the print section 2, a scanner engine unit 300 that controls the scanner section 3, and a controller unit 100 that controls the entire recording apparatus 1. A print controller 202 controls various mechanisms of the print engine unit 200 according to instructions from a main controller 101 of the controller unit 100. Various mechanisms of the scanner engine unit 300 are controlled by the main controller 101 of the controller unit 100. The control configuration will be described in detail below.

[0019] In the controller unit 100, a main controller 101 constituted by a CPU controls the entire recording device 1 using a RAM 106 as a work area in accordance with programs and various parameters stored in a ROM 107. For example, when a print job is input from a host device 400 via a host I / F 102 or a wireless I / F 103, an image processing unit 108 performs predetermined image processing on the received image data in accordance with instructions from the main controller 101. The main controller 101 then transmits the processed image data to a print engine unit 200 via a print engine I / F 105.

[0020] The recording device 1 may obtain image data from the host device 400 via wireless communication or wired communication, or may obtain image data from an external storage device (such as a USB memory) connected to the recording device 1. The communication method used for wireless communication or wired communication is not limited. For example, Wi-Fi (Wireless Fidelity) (registered trademark) or Bluetooth (registered trademark) can be used as a communication method used for wireless communication. Also, USB (Universal Serial Bus) or the like can be used as a communication method used for wired communication. Also, for example, when a read command is input from the host device 400, the main controller 101 transmits the command to the scanner unit 3 via the scanner engine I / F 109.

[0021] The operation panel 104 is a mechanism for a user to perform input and output to the recording device 1. The user can instruct operations such as copying and scanning, set the print mode, and recognize information about the recording device 1 via the operation panel 104.

[0022] In the print engine unit 200, a print controller 202 constituted by a CPU controls various mechanisms of the print section 2 in accordance with programs and various parameters stored in a ROM 203, using a RAM 204 as a work area. When various commands and image data are received via a controller I / F 201, the print controller 202 temporarily stores them in the RAM 204. The print controller 202 causes an image processing controller 205 to convert the stored image data into print data so that the print head 8 can use it for the printing operation.

[0023] When the recording data is generated, the print controller 202 causes the recording head 8 to execute a recording operation based on the recording data via the head I / F 206. At this time, the print controller 202 drives the feeding units 6A and 6B, the conveying rollers 7, the discharge rollers 12, and the flapper 11 shown in Fig. 1 via the conveyance control unit 207 to convey the recording medium S. In accordance with an instruction from the print controller 202, the recording head 8 executes a recording operation in conjunction with the conveyance operation of the recording medium S, and printing processing is performed.

[0024] The head carriage control unit 208 changes the orientation and position of the recording head 8 depending on the operating state of the recording device 1, such as the maintenance state and recording state. The recording head 8 is mounted on a carriage, and the recording head 8 and the carriage together constitute a recording unit (recording unit). The ink supply control unit 209 controls the ink supply unit 15 so that the pressure of the ink supplied to the recording head 8 falls within an appropriate range. The maintenance control unit 210 controls the operation of the cap unit 10 and the wiping unit 17 in the maintenance unit 16 when performing a maintenance operation on the recording head 8.

[0025] In the scanner engine unit 300, the main controller 101 controls the hardware resources of the scanner controller 302 in accordance with the programs and various parameters stored in the ROM 107, using the RAM 106 as a work area, thereby controlling various mechanisms provided in the scanner unit 3.

[0026] For example, the main controller 101 controls hardware resources in the scanner controller 302 via the controller I / F 301, so that an original placed on the ADF by a user is transported via the transport control unit 304 and read by the sensor 305. The scanner controller 302 then stores the read image data in the RAM 303. Note that the print controller 202 can convert the image data acquired as described above into recording data, thereby causing the recording head 8 to perform a recording operation based on the image data read by the scanner controller 302.

[0027] Fig. 3 shows the recording apparatus 1 in a recording state. Compared to the standby state shown in Fig. 1, the cap unit 10 is spaced away from the ejection port surface 8a of the recording head 8, and the ejection port surface 8a faces the platen 9. In this embodiment, the plane of the platen 9 is inclined at about 45 degrees with respect to the horizontal direction, and the ejection port surface 8a of the recording head 8 in the recording position is also inclined at about 45 degrees with respect to the horizontal direction so that the distance from the platen 9 is maintained constant.

[0028] When the recording head 8 moves from the standby position shown in FIG. 1 to the recording position shown in FIG. 3, the print controller 202 uses the maintenance control unit 210 to lower the cap unit 10 to the retracted position shown in FIG. 3. This separates the ejection port surface 8a of the recording head 8 from the cap member 10a. Thereafter, the print controller 202 uses the head carriage control unit 208 to rotate the recording head 8 by 45 degrees while adjusting the vertical height of the recording head 8, so that the ejection port surface 8a faces the platen 9. When the recording operation is completed and the recording head 8 moves from the recording position to the standby position, the print controller 202 performs the above steps in reverse.

[0029] Next, a description will be given of the transport path of the recording medium S in the printing section 2. When a recording command is input, the print controller 202 first uses the maintenance control section 210 and the head carriage control section 208 to move the recording head 8 to the recording position shown in Fig. 3. Then, the print controller 202 uses the transport control section 207 to drive either the first feeding unit 6A or the second feeding unit 6B in accordance with the recording command, and feeds the recording medium S.

[0030] Next, a description will be given of the maintenance operation for the recording head 8. As described in Fig. 1, the maintenance unit 16 of this embodiment includes a cap unit 10 and a wiping unit 17, and performs the maintenance operation by operating these at a predetermined timing.

[0031] Fig. 4 is a diagram showing the recording device 1 in a maintenance state. When moving the recording head 8 from the standby position shown in Fig. 1 to the maintenance position shown in Fig. 4, the print controller 202 moves the recording head 8 upward in the vertical direction and moves the cap unit 10 downward in the vertical direction. Then, the print controller 202 moves the wiping unit 17 from the retracted position to the right in Fig. 4. After that, the print controller 202 moves the recording head 8 downward in the vertical direction to a maintenance position where maintenance operation is possible.

[0032] On the other hand, when the recording head 8 moves from the recording position shown in Fig. 3 to the maintenance position shown in Fig. 4, the print controller 202 moves the recording head 8 vertically upward while rotating it 45 degrees. Then, the print controller 202 moves the wiping unit 17 from the retracted position to the right. After that, the print controller 202 moves the recording head 8 vertically downward to a maintenance position where the maintenance operation by the maintenance unit 16 can be performed.

[0033] 5 is a schematic diagram showing the configuration of the ink supply unit 15. The ink supply unit 15 is configured to supply ink from the ink tank unit 14 to the recording head 8. Here, the configuration for one color of ink is shown, but the recording device 1 has a similar configuration for each color of ink.

[0034] In the recording device 1, ink circulates between an ink tank 502, which constitutes the ink supply unit 15 and serves as a storage section for storing ink, and the recording head 8. Ink is supplied from the ink tank 502 to the recording head 8 via a supply flow path 507, and ink not ejected from the recording head 8 is recovered into the ink tank 502 via a recovery flow path 508. In other words, the ink tank 502, the supply flow path 507, the recording head 8, and the recovery flow path 508 form a circulation path through which the ink circulates. The pressure reducing pump 503 is a negative pressure generating source for reducing the pressure inside the ink tank 502.

[0035] Ink cartridge 501 is a storage member that stores ink to be supplied to ink tank 502. Ink cartridge 501 is configured to store ink in a flexible member, and ink is filled into ink tank 502 by a change in volume of the flexible member. Ink cartridge 501 is detachable from recording device 1. Ink cartridge 501 and ink tank 502 are connected by tank connection flow path 506.

[0036] When maintenance such as replacement or adjustment of the recording head 8 is required, the connection portion connecting the recording head 8 to the ink supply unit 15 may be removed. FIG. 6(a) is a schematic perspective view showing a state in which the head joint 111 of the recording head 8 is connected to a tube joint (joint portion) 115 to which the tube 116 constituting the supply flow path 507 is connected. FIG. 6(b) is a schematic perspective view showing a state in which the head joint 111 and the tube joint 115 are disconnected. Although FIG. 6 shows only the tube joint 115 of the tube 116 constituting the supply flow path 507, the tube constituting the recovery flow path 508 has a similar configuration. In this embodiment, the head joint 111 and the tube joint 115 are connected along the horizontal direction.

[0037] The tube joint 115 is connected to the ink supply unit 15 (ink tank 502) via a tube 116. The recording head 8 is capable of ejecting ink of four colors: cyan (C), magenta (M), yellow (Y), and black (Bk), and a plurality of tubes 116 provided for each ink color are held together by the tube joint 115. Note that the tube joint 115 may be configured to be provided separately for each color.

[0038] When the head joint 111 and the tube joint 115 are disconnected for maintenance of the recording device 1, ink may drip from the ink supply port 112 of the head joint 111 and the joint connection port 119 of the tube joint 115. If the dripping ink flows into the ink supply port 112 of another color, ink may mix in the recording head 8, causing a deterioration in print quality.

[0039] Fig. 7 is an enlarged perspective view showing the configuration around the ink supply port 112 in this embodiment. Fig. 7 shows a case where ink drips from the ink supply port 112. The ink supply ports 112 in this embodiment are provided in the following order from the top: cyan ink supply port 112C, magenta ink supply port 112M, yellow ink supply port 112Y, and black ink supply port 112Bk.

[0040] When the head joint 111 and the tube joint 115 are disconnected, ink 113 (cyan ink 113C, magenta ink 113M, yellow ink 113Y, and black ink 113Bk) drips from each ink supply port 112. The dripping ink 113 travels along a flow path formed by a guide wall 114 provided on the head joint 111, and is absorbed by an ink absorber 117 provided below the head joint 111. The ink absorber 117 functions as an ink holding member capable of absorbing ink.

[0041] The guide wall 114 includes a guide wall 114a provided to protrude from a side wall 111a of the head joint 111 where the ink supply port 112 is provided. The guide wall 114 also includes a guide wall 114b provided to protrude from a side wall 111b adjacent to the side wall 111a and extending in the opening direction of the ink supply port 112. The guide walls 114a and 114b are connected to form a continuous ink flow path. The ink 113 dripping from the ink supply port 112 is guided along the side wall 111a by the guide wall 114a, and then guided along the side wall 111b by the guide wall 114b to reach the ink absorber 117. In other words, the guide wall 114 provides independent flow paths from the ink supply port 112 to the ink absorber 117 for each ink color.

[0042] Such guide wall 114 forms an independent flow path for each ink color, preventing ink dripping from the ink supply port 112 from flowing into the ink supply port 112 of another color. This makes it possible to suppress the occurrence of ink mixing. In addition, even if the ink is the same color, pigment ink and dye ink may mix together and cause the ink to stick, but by providing guide wall 114, it is possible to suppress the mixing of different types of ink. That is, even if, for example, cyan ink 113C, magenta ink 113M, and yellow ink 113Y are dye-based inks and black ink 113Bk is a pigment-based ink, it is possible to suppress the inks from mixing with each other.

[0043] Fig. 8 is a schematic side view of the state in which ink has further dripped from the state in Fig. 7. Fig. 8 is a side view seen from the side wall 111b of the head joint 111. If a large amount of ink 113 has dripped, the ink 113 may fall from the edge of the guide wall 114a as shown in Fig. 8. In contrast, in this embodiment, the length of the guide wall 114a protruding from the side wall 111a is formed to become shorter from top to bottom.

[0044] Cyan ink 113C dripping from the cyan ink supply port 112C is received by a guide wall 114aC that protrudes from the side wall 111a by a length LC. Magenta ink 113M dripping from the magenta ink supply port 112M is received by a guide wall 114aM that protrudes from the side wall 111a by a length LM. Yellow ink 113Y dripping from the yellow ink supply port 112Y is received by a guide wall 114aY that protrudes from the side wall 111a by a length LY. The length relationship between the respective lengths is LC>LM>LY.

[0045] In this way, by configuring the guide walls 114a so that the protruding length is longer toward the top, even if ink drips from the edge of the guide walls 114a, it is prevented from flowing into the ink supply port 112 provided below. Therefore, it is possible to further prevent different types of ink from mixing with each other.

[0046] Fig. 9 is an enlarged perspective view showing the configuration around the ink supply port 112. Fig. 9(a) is a diagram showing a state in which the ink 113M has solidified, and Fig. 9(b) is a diagram showing a state in which the solidified ink 113M is released.

[0047] Some inks 113 harden (stick) when dried, depending on the composition of the components. When such ink 113 is used in this embodiment, it may harden and accumulate in the flow path formed by the guide wall 114, and overflow from the guide wall 114. As shown in FIG. 9(a), if the magenta ink 113M is an ink that tends to harden, the ink may harden in the flow path formed by the guide wall 114, and remain as fixed ink 118.

[0048] In contrast, if the cyan ink 113C is an ink that does not easily solidify (adhere), the ink supply port 112C for the cyan ink 113C is disposed above the ink supply port 112M for the magenta ink 113M, as shown in Figure 9(b). Ink that is prone to adhes may be more easily prevented from adhering by mixing with ink that is less likely to adhes.

[0049] Taking advantage of this characteristic, guide wall 114b is formed so that cyan ink 113C and magenta ink 113M join midway through the flow path formed by guide wall 114b. This allows cyan ink 113C dripping down from above to mix with the solidified ink 118 of magenta ink 113M, dissolving the solidified ink 118. The magenta ink 113M that has been freed from solidification continues to flow downward and is absorbed by ink absorber 117. This makes it possible to prevent ink that is prone to solidification from solidifying and accumulating midway through the flow path.

[0050] The above describes a configuration for preventing different types of ink (liquid) from mixing at the head joint 111, but the present invention is not limited to this. For example, by making the peripheral configuration of the tube joint 115 and the joint connection port 119 similar, it is possible to prevent different types of ink (liquid) from mixing at the tube joint 115.

[0051] Second Embodiment In the second embodiment, a configuration in which the head joint 111 and the tube joint 115 are connected in the gravity direction (Z direction) will be described. Fig. 10(a) is a schematic diagram showing a state in which the head joint 111 and the tube joint 115 are connected, and Fig. 10(b) is a schematic diagram showing a state in which the head joint 111 and the tube joint 115 are disconnected.

[0052] When maintenance of the recording device 1 is required, such as replacing the recording head 8, the tube joint 115 may be removed from the head joint 111 as shown in Fig. 10(b). At that time, ink may drip from the joint connection port 119 of the tube joint 115. If the dripping ink flows into the ink supply port 112 of another color, ink may be mixed in the recording head 8, which may result in a decrease in print quality.

[0053] Figure 11 is an enlarged schematic diagram showing the peripheral configuration of the connection portion between the head joint 111 and the tube joint 115. Figure 11(a) shows the state in which the head joint 111 and the tube joint 115 are connected, and Figures 11(b) to 11(d) sequentially show how the head joint 111 and the tube joint 115 are detached.

[0054] As in the first embodiment, ink dripping from the ink supply port 112 is independently guided toward the ink absorber 117 by a flow path formed by the guide wall 114. The guide wall 114 in the second embodiment further has a guide rail 120 on its upper portion that can engage with a guide portion 121 provided on the tube joint 115. In the second embodiment, the ink supply ports 112 are arranged in the Y direction that intersects (is perpendicular to) the direction of gravity (Z direction).

[0055] That is, when the user removes the tube joint 115 from the head joint 111, first, the tube joint 115 is moved upward in the direction of gravity (Z direction) as shown in Fig. 11(b). Then, the guide rail 120 as a restricting portion and the guide portion 121 butt against each other, and the guide portion 121 and the guide rail 120 engage with each other.

[0056] This engagement restricts movement of the tube joint 115 in the Y direction. That is, the guide rail 120 restricts movement of the tube joint 115 in the arrangement direction (Y direction) of the ink supply ports 112. Therefore, even if ink drips from the joint connection port 119, it is prevented from flowing into the adjacent ink supply ports 112 of other colors.

[0057] 11(c), the user moves the tube joint 115 in the X direction along the guide rail 120. Ink 113 dripping from the joint connection port 119 and the ink supply port 112 due to this movement flows through the flow path formed by the guide wall 114 and is absorbed by the ink absorber 117.

[0058] As described in the first embodiment, when pigment-based ink and dye-based ink are mixed, the ink may solidify. In contrast, even when the cyan ink 113C, magenta ink 113M, and yellow ink 113Y are dye-based and the black ink 113Bk is pigment-based, the engagement between the guide portion 121 and the guide rail 120 can prevent the inks from mixing.

[0059] After that, Figure 11( d ), the user can remove the tube joint 115 from the head joint 111 by moving the tube joint 115 in the X direction along the guide rail 120. With this configuration, even if the head joint 111 and the tube joint 115 are connected in the gravity direction, it is possible to prevent dripping ink from flowing into the ink supply ports 112 of other colors. In other words, it is possible to prevent different types of liquid from mixing with each other. [Explanation of symbols]

[0060] 1 Recording device 8. Recording Head 112 Ink supply port 113 Ink 114 Guide Wall 502 Ink tank (storage section) 507 Supply Channel

Claims

1. a recording unit having a recording head capable of ejecting a first ink and a second ink and a head joint; a tube joint to which a first tube for supplying the first ink from a first tank that stores the first ink to the recording head and a second tube for supplying the second ink from a second tank that stores the second ink to the recording head are connected, and which is connectable to the head joint; The head joint is a first side wall provided with a first supply port for supplying the first ink to the first tube and a second supply port disposed below the first supply port for supplying the second ink to the second tube; a second side wall adjacent to the first side wall; a first guide wall that is provided between the first supply port and the second supply port, protruding from the first side wall, and that guides the first ink dripping from the first supply port; a second guide wall protruding from the second side wall and connected to the first guide wall for guiding the first ink.

2. 2. The recording apparatus according to claim 1, further comprising an absorbent body for absorbing the first ink guided by the second guide wall.

3. a third tube for supplying a third ink from a third tank storing the third ink to the recording head is connected to the tube joint; The head joint is a third supply port provided in the first side wall below the second supply port for supplying the third ink to the third tube; a third guide wall that is provided between the second supply port and the third supply port, protruding from the first side wall, and that guides the second ink dripping from the second supply port; 3. The recording apparatus according to claim 2, wherein a length by which the third guide wall protrudes from the first side wall is shorter than a length by which the first guide wall protrudes from the first side wall.

4. 4. The recording apparatus according to claim 3, wherein the absorber absorbs the first ink dripping down from the first guide wall.

Images