JP6287758B2 - Inkjet recording device - Google Patents

Description

  The present invention relates to an ink jet recording apparatus including an apparatus main body that forms an image using ink and an ink container that stores ink to be supplied to the apparatus main body.

  2. Description of the Related Art Inkjet recording apparatuses that form images by ejecting ink are widely used as recording apparatuses such as facsimiles, copying machines, and printers because they can form high-definition images.

  In such an ink jet recording apparatus, an ink container having a flexible ink pack filled with ink and a storage case for storing the ink pack is used to supply ink to the recording head.

  Further, a joint mechanism is provided at the connection portion of the ink container and the ink flow path of the apparatus main body. The joint mechanism includes a container side joint portion provided on the ink container side and a main body side joint portion provided on the apparatus main body side to which the container side joint portion is attached and detached. Then, by attaching the ink container to the apparatus main body, the container side joint portion and the main body side joint portion are connected, and ink can be supplied.

  When the ink container is replaced, the container side joint part and the main body side joint part are separated after the ink flow path is closed by an on-off valve as necessary.

  In addition, the joint mechanism provided in a liquid channel is disclosed by patent document 1, for example.

JP-T 8-503288

  In the conventional ink jet recording apparatus, as described above, when the ink container is replaced, the container side joint portion and the main body side joint portion are separated after the ink flow path is closed by the on-off valve as necessary. It is. For this reason, ink does not continue to overflow from the container side joint part or the main body side joint part.

  However, even in this conventional ink jet recording apparatus, a small amount of ink remaining at the tips of the container side joint portion and the main body side joint portion may leak to the outside, and the periphery of the joint mechanism may be stained. There is.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is an inkjet capable of suppressing leakage of ink remaining in a joint portion when an ink container is replaced. It is to provide a recording device.

  In order to achieve the above object, an ink jet recording apparatus of the present invention includes an apparatus main body that forms an image using ink, and an ink container that is detachably formed on the apparatus main body and stores ink supplied to the apparatus main body. A joint mechanism is provided at the connection portion of the ink flow path of the ink container and the apparatus main body, and the joint mechanism is provided on the ink container side, and on the apparatus main body side and the first joint portion. And a second joint part to which the one joint part is attached and detached. The first joint part is disposed in the first main body part and the cylindrical first main body part through which ink passes, and opens and closes the ink flow path. The second joint portion has a cylindrical second main body portion through which ink passes, and at least one of the first main body portion and the second main body portion. Inside, a cylindrical slide part for connecting the ink flow path is arranged, and when the ink container is attached to the apparatus main body, the ink flow paths of the first joint part and the second joint part are connected by the slide part. Thereafter, when the container side valve moves in the first main body part to open the ink flow path and the ink container is removed from the apparatus main body, the container side valve moves by moving the first joint part away from the second joint part. After moving in the first main body portion and closing the ink flow path, the slide portion moves in a direction to increase the internal volume of at least one of the first main body portion and the second main body portion.

  According to the present invention, it is possible to suppress the ink remaining at the tips of the first joint portion and the second joint portion from leaking to the outside, and to suppress the periphery of the joint mechanism from being stained.

It is a figure which shows the structure of the inkjet printer of one Embodiment of this invention. FIG. 2 is a diagram illustrating a structure around a first belt conveyance unit, a recording unit, and a second belt conveyance unit in FIG. 1. It is the figure which looked at the 1st belt conveyance part and recording part of the inkjet printer shown in FIG. 1 from upper direction. It is the figure which showed the container mounting part and ink container structure of the inkjet printer shown in FIG. It is the figure which showed the structure of the ink container of the inkjet printer of one Embodiment of this invention. It is the figure which showed the structure of the ink pack of the inkjet printer of one Embodiment of this invention. It is the figure which showed the structure of the ink container of the inkjet printer of one Embodiment of this invention. It is a figure of the connection part periphery of the ink supply port and supply port connection part of the inkjet printer of one Embodiment of this invention. It is a figure of the connection part of the ink supply port and supply port connection part of the inkjet printer of one Embodiment of this invention. It is a figure of the connection part periphery of the ink supply port and supply port connection part of the inkjet printer of one Embodiment of this invention. It is a figure of the connection part periphery of the ink supply port and supply port connection part of the inkjet printer of one Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, in an ink jet printer (ink jet recording apparatus) 100 according to an embodiment of the present invention, a paper feed cassette 2 that is a paper storage unit is disposed below a printer main body (apparatus main body) 1. A sheet P such as a cut paper before printing, which is an example of a recording medium, is accommodated in the sheet feeding cassette 2. A paper feeding device 3 is disposed downstream of the paper feeding cassette 2 in the paper conveyance direction, that is, above the right side of the paper feeding cassette 2 in FIG. The sheet feeding device 3 separates and feeds the sheets P one by one toward the upper right of the sheet feeding cassette 2 in FIG.

  The ink jet printer 100 includes a first paper transport path 4a therein. The first paper transport path 4a is located at the upper right, which is the paper feed direction in the paper feed cassette 2. The paper P sent out from the paper feed cassette 2 is transported vertically upward along the side surface of the printer body 1 through the first paper transport path 4a.

  A registration roller pair 13 is provided at the downstream end of the first paper transport path 4a with respect to the paper transport direction. Further, a first belt conveyance unit 5 and a recording unit 9 are disposed in the immediate vicinity of the registration roller pair 13 on the downstream side. The paper P sent out from the paper feed cassette 2 reaches the registration roller pair 13 through the first paper transport path 4a. The registration roller pair 13 feeds the paper P toward the first belt conveyance unit 5 while correcting the oblique feeding of the paper P and timings the ink ejection operation performed by the recording unit 9. The first paper transport path 4a is provided with a pair of transport rollers for transporting the paper P at appropriate positions.

  As shown in FIG. 2, the first belt conveyance unit 5 includes a first conveyance belt 8 wound around a first drive roller 6 and a first driven roller 7. The first conveyor belt 8 is rotated counterclockwise by the first drive roller 6. The paper P sent out by the registration roller pair 13 is held on the transport surface 8a (upper surface in FIG. 2) of the first transport belt 8, and is transported in the arrow X direction (from right to left).

  A first paper suction unit 30 is provided at a location inside the first transport belt 8 and facing the back side of the transport surface 8 a of the first transport belt 8. The first sheet suction unit 30 is provided with a large number of air suction holes 30a on the upper surface, and is provided with a fan 30b inside, so that air can be sucked downward from the upper surface. The first conveying belt 8 is also provided with a large number of air suction holes (not shown). With the above configuration, the first belt conveyance unit 5 conveys the paper P while adsorbing and holding the paper P on the conveyance surface 8 a of the first conveyance belt 8.

  The recording unit 9 includes a head housing 10 and line heads 11C, 11M, 11Y, and 11K held by the head housing 10. These line heads 11C to 11K are supported at such a height that a predetermined interval (for example, 1 mm) is formed with respect to the conveying surface 8a of the first conveying belt 8, and as shown in FIG. A plurality (three in this case) of recording heads 17a to 17c are arranged in a staggered manner along the paper width direction (vertical direction in FIG. 3) perpendicular to the head. The line heads 11C to 11K have a recording area equal to or larger than the width of the paper P, and are sucked and held on the conveyance surface 8a of the first conveyance belt 8 in accordance with the image data information received from the external computer. The ink of each color is ejected from the ink ejection nozzle 18 corresponding to the printing position onto the paper P to be printed. As a result, a full-color image in which four colors of yellow, magenta, cyan, and black are superimposed is recorded on the paper P.

  A container mounting unit 20 (see FIG. 4) is disposed above the recording unit 9. As shown in FIG. 4, the container mounting unit 20 includes a plurality of ink containers 21C, 21M, 21Y, and 21K that respectively contain cyan (C), magenta (M), yellow (Y), and black (K) inks. It is detachably attached. The ink containers 21C to 21K are connected to the line heads 11C to 11K via the ink supply tubes 23 and the sub ink tanks 24 (see FIG. 4) for the respective colors. An electromagnetic valve (main body side valve) 25 that opens and closes the ink flow path is provided at a portion upstream of the sub ink tank 24 of the ink supply tube 23. The ink supply tube 23, the sub ink tank 24, and the electromagnetic valve 25 are provided for each of the ink containers 21C to 21K. However, in FIG. One electromagnetic valve 25 is drawn at a time.

  The sub ink tank 24 is provided with an ink sensor (not shown) for detecting the amount of ink in the sub ink tank 24, and the electromagnetic valve 25 is opened according to the amount of ink, and the sub ink tanks 24C to 21K Ink is supplied to the ink tank 24.

  The sub ink tank 24 is disposed at a position lower than the ink containers 21C to 21K, and the colors corresponding to the ink containers 21C to 21K are generated by the ink pressure generated by the height difference between the sub ink tank 24 and the ink containers 21C to 21K. Of the ink is replenished and supplied to the sub ink tank 24.

  Further, when the ink in the sub ink tank 24 becomes a predetermined amount or less with the electromagnetic valve 25 opened, the control unit (not shown) determines that the ink in the ink pack 50 has run out.

  A second belt conveyance unit 12 is disposed on the downstream side (left side in FIG. 1) of the first belt conveyance unit 5 with respect to the sheet conveyance direction. The paper P on which the ink image is recorded by the recording unit 9 is sent to the second belt conveyance unit 12, and the ink ejected on the surface of the paper P is dried while passing through the second belt conveyance unit 12.

  The second belt conveyance unit 12 includes a second conveyance belt 40 that is wound around a second drive roller 41 and a second driven roller 42. The second transport belt 40 is rotated counterclockwise in FIG. 2 by the second drive roller 41. The sheet P on which an image is recorded by the recording unit 9 and conveyed in the direction of arrow X by the first belt conveyance unit 5 is transferred to the second conveyance belt 40 and conveyed in the direction of arrow Z in FIG.

  A second paper suction portion 43 is provided at a location inside the second transport belt 40 and facing the back side of the transport surface 40 a of the second transport belt 40. The second sheet suction unit 43 is provided with a number of air suction holes 43a on the upper surface and is provided with a fan 43b inside so that air can be sucked downward from the upper surface. The second conveyor belt 40 is also provided with a large number of air suction vents (not shown). With the above configuration, the second belt conveyance unit 12 conveys the paper P while adsorbing and holding the paper P on the conveyance surface 40 a of the second conveyance belt 40.

  A decurler unit 14 is provided on the downstream side of the second belt conveyance unit 12 with respect to the sheet conveyance direction and in the vicinity of the left side surface of the printer main body 1. The paper P from which the ink has been dried by the second belt conveyance unit 12 is sent to the decurler unit 14, and the curling of the paper P is corrected using a plurality of rollers arranged in the paper width direction.

  A second paper transport path 4b is provided on the downstream side (upper side in FIG. 1) of the decurler unit 14 with respect to the paper transport direction. The paper P that has passed through the decurler unit 14 is discharged from the second paper transport path 4b to a paper discharge tray 15 provided outside the left side surface of the inkjet printer 100 via a pair of discharge rollers.

  As shown in FIG. 5, the ink container 21 </ b> K includes an ink pack 50 that stores ink therein and a storage case 60 that stores the ink pack 50. In addition, in FIG. 5, the cap part 62 mentioned later of the storage case 60 is abbreviate | omitted. Further, since the ink containers 21C to 21Y have the same shape and configuration as the ink container 21K, description thereof is omitted here.

  As shown in FIG. 6, the ink pack 50 is formed of a laminate film that is a flexible film, and the ink storage unit 51 is filled with ink. A cylindrical ink supply port (first joint portion) 80 communicating with the inside of the ink storage portion 51 is attached to one end portion of the ink pack 50. An annular groove 80a is formed at the center of the ink supply port 80 along the circumferential direction. The detailed structure of the ink supply port 80 will be described later.

  As shown in FIG. 7, the storage case 60 includes, for example, a polypropylene base portion 61 and a polystyrene cap portion 62. The base portion 61 and the cap portion 62 are combined to form a substantially rectangular parallelepiped box, in which the ink pack 50 is stored.

  A circular fitting portion 62a (see FIG. 8) into which a groove portion 80a formed in the ink supply port 80 of the ink pack 50 is fitted is formed inside the cap portion 62. Further, an opening 62b (see FIG. 7) into which a supply port connecting portion 90 (to be described later) of the container mounting portion 20 is inserted is formed on the end surface on the mounting direction side of the cap portion 62. Further, a plurality of recesses and the like are formed on the outer peripheral surface of the cap portion 62 so as to correspond to the inner surface shape of the fixing portion 20a (see FIG. 4) of the container mounting portion 20.

  The base unit 61 includes a handle unit 61a that is held by the user when the ink container 21K is replaced, and a pack storage unit 61b that stores the ink pack 50.

  Next, the detailed structure of the connecting portion between the ink container 21K and the container mounting portion 20 will be described.

  As shown in FIG. 8, a joint mechanism 70 is provided at a connection portion between the ink container 21 </ b> K and the ink flow path R of the container mounting portion 20. The joint mechanism 70 includes an ink supply port (first joint portion) 80 provided in the ink container 21K and a supply port connection portion (second joint portion) 90 provided in the fixing portion 20a of the container mounting portion 20. Composed.

  The ink supply port 80 is composed of three cylindrical members 81 a, 81 b and 81 c, and a first main body portion 81 through which ink passes, and a container-side valve 82 disposed inside the cylindrical first main body portion 81. And a compression coil spring (biasing member) 83 that is disposed inside the first main body portion 81 and biases the container side valve 82 toward the left side (supply port connection portion 90 side).

  The container side valve 82 is formed with a plurality of ink passage portions 82a (see FIG. 9) for allowing ink to pass from the upstream side to the downstream side. In FIG. 9, the compression coil spring 83 and compression coil springs 94, 95, and 96 described later are omitted. Further, a sealing material 82b made of an O-ring is provided on the outer peripheral surface of the container side valve 82. The container side valve 82 is movable along the flow path direction (left and right direction) in the first main body 81, and the container side valve 82 moves along the flow path direction. R can be opened and closed.

  As shown in FIG. 8, the supply port connecting portion 90 includes a cylindrical second main body portion 91 through which ink passes, a cylindrical slide portion 92 disposed inside the second main body portion 91, and a second Compression coil spring (biasing member) that urges the protection portion 93 provided on the outer peripheral surface of the main body portion 91, the second main body portion 91, the slide portion 92, and the protection portion 93 toward the right side (the ink supply port 80 side). 94, 95 and 96.

  The second main body portion 91 is formed with an insertion portion 91a into which a part of the slide portion 92 is inserted. The inner diameter of the insertion portion 91 a is formed to be approximately the same as the inner diameter of the member 81 c of the first main body portion 81. In addition, a flange portion 91 b that protrudes radially outward is formed on the outer peripheral surface of the second main body portion 91. The ink supply tube 23 (see FIG. 4) is connected to the left end of the second main body 91.

  A plurality of ink passage portions 92a (see FIG. 9) for allowing ink to pass from the upstream side to the downstream side are formed at the right end portion of the slide portion 92. The slide part 92 is movable along the flow path direction (left-right direction) through the insertion part 91a of the second main body part 91. The slide portion 92 is formed so that the right side portion can be inserted into the first main body portion 81, and the right end portion is formed so as to press the container side valve 82 to the right side. The slide portion 92 has a smaller diameter than the first main body portion 81 and the second main body portion 91, and is a member (except for the compression coil spring 95) constituting the ink supply port 80 and the supply port connection portion 90. The smallest diameter.

  Further, sealing materials 92b and 92c made of O-rings are provided on the outer peripheral surface of the slide portion 92. The sealing material 92b suppresses ink leakage from between the slide portion 92 and the member 81c of the first main body portion 81, and the sealing material 92c prevents ink leakage from between the slide portion 92 and the second main body portion 91. Suppress.

  The protection part 93 is movable along the flow path direction on the inner peripheral surface of the connection part attaching projection 20b of the container mounting part 20 and the outer peripheral surface of the second main body part 91, and the ink container 21K is separated from the container mounting part 20 When removed, the right end (tip) of the slide portion 92 is protected. Thereby, it can suppress that a user touches the right end part of the slide part 92. FIG.

  The compression coil spring 94 is disposed on the left side of the flange portion 91 b of the second main body portion 91, and ensures an overstroke when the ink supply port 80 is attached to the supply port connection portion 90. The compression coil spring 95 is disposed inside the insertion portion 91a of the second main body 91, and biases the slide portion 92 toward the right side (the ink supply port 80 side). The compression coil spring 96 is disposed between the flange 91b of the second main body portion 91 and the protection portion 93, and biases the protection portion 93 toward the right side.

  In a state where the ink container 21K is mounted on the container mounting portion 20 (the state shown in FIG. 8), the ink flow path R is normally open. Specifically, the right end portion of the slide portion 92 is inserted into the first main body portion 81 and presses the container side valve 82 to the right side. Thereby, the sealing material 82b of the container side valve 82 is separated from the member 81c of the first main body 81, and the ink flow path R is opened. As a result, as shown by the thick arrows in FIG. 9, the member 81a of the first main body 81 from the ink pack 50, the ink passage 82a of the container side valve 82, the ink passage 92a of the slide 92, and the second main body. 91 and the ink flow path R are connected to the sub ink tank 24 through the ink supply tube 23.

  When the ink in the ink container 21K runs out and the ink container 21K is replaced, first, the ink flow path R on the apparatus main body (printer main body 1) side is closed by closing the electromagnetic valve 25 (see FIG. 4). At this time, a notification unit (not shown) such as a display panel is notified that the ink container 21K should be replaced. In addition, the opening / closing operation | movement of the solenoid valve 25 and the alerting | reporting operation | movement of an alerting | reporting part are performed by a control part (not shown).

  When the ink container 21K is removed from the container mounting unit 20, the ink supply port 80 is moved in the direction away from the supply port connection unit 90 (right direction). Specifically, when the ink supply port 80 is moved away from the supply port connection unit 90, the state shown in FIG. 8 is changed to the state shown in FIG. At this time, as shown in FIG. 10, the container side valve 82 moves to the left side inside the first main body portion 81 while the right end portion of the slide portion 92 is in contact with the container side valve 82, and the sealing material. 82b contacts the member 81c of the first main body 81, and the ink flow path R on the ink container 21K side is closed.

  Thereafter, the ink supply port 80 is further moved in a direction away from the supply port connection unit 90, whereby the state shown in FIG. 10 is changed to the state shown in FIG. At this time, the supply port connection 90 is slightly moved to the right by the compression coil spring 94. Further, the ink supply port 80 moves to the right side while the container side valve 82 closes the ink flow path R by the compression coil spring 83. And the internal volume of the 2nd main-body part 91 increases by the slide part 92 moving to the right side with respect to the 2nd main-body part 91 with the compression coil spring 95. FIG. Therefore, the ink in the contact portion between the slide portion 92 and the container side valve 82 is sucked into the slide portion 92. Further, when the ink supply port 80 is separated from the supply port connection portion 90, the protection portion 93 is moved to the right side by the compression coil spring 96 to substantially the same position as the right end portion of the slide portion 92, and the right end portion of the slide portion 92 is moved. Cover and protect.

  Then, by pulling out the ink container 21K further to the right side, the ink container 21K is removed from the container mounting portion 20.

  When a new ink container 21K is mounted on the container mounting unit 20, the ink supply port 80 and the supply port connection unit 90 operate in the reverse manner. For this reason, after the ink flow path R of the ink supply port 80 and the supply port connection section 90 is connected by the slide portion 92, the container side valve 82 moves in the first main body portion 81 to open the ink flow path R.

  In the present embodiment, as described above, when the ink containers 21 </ b> C to 21 </ b> K are removed from the printer main body 1, after the container-side valve 82 closes the ink flow path R, the slide portion 92 is positioned relative to the second main body portion 91. It moves to the 1 body part 81 side (direction which increases the internal volume of the 2nd body part 91). Thereby, after the container side valve 82 closes the ink flow path R, the internal volume of the second main body portion 91 increases, so that the ink at the tip of the ink supply port 80 and the supply port connection portion 90 is transferred to the second main body portion. Inhaled by 91. For this reason, it is possible to suppress the ink remaining at the tips of the ink supply port 80 and the supply port connection portion 90 from leaking to the outside, and to suppress the periphery of the joint mechanism 70 from being stained.

  Further, as described above, the slide portion 92 is provided in the second main body portion 91. Thereby, compared with the case where the slide part 92 is provided in the first main body part 81, the number of parts of the ink supply port 80 can be reduced, so that the replacement cost of the ink containers 21C to 21K which are consumables can be suppressed. it can.

  Further, as described above, the right side (ink supply port 80 side) portion of the slide portion 92 is inserted into the first main body 81 with the ink supply port 80 connected to the supply port connection unit 90. Yes. Accordingly, the ink flow path R of the first main body 81 can be easily connected to the ink flow path R of the second main body 91 by the slide portion 92.

  Further, as described above, the slide portion 92 presses the container side valve 82 in a state where the ink supply port 80 is connected to the supply port connection portion 90. As a result, the ink flow path R can be easily opened in a state where the ink supply port 80 is connected to the supply port connection part 90, and the ink flow path can be removed when the ink supply port 80 is removed from the supply port connection part 90. R can be easily closed.

  Further, as described above, the slide portion 92 has a smaller diameter than the first main body portion 81 and the second main body portion 91. Thereby, since the internal diameter of the slide part 92 can be made small, it can suppress easily that the ink in the slide part 92 leaks with the surface tension of an ink.

  Further, as described above, the ink containers 21 </ b> C to 21 </ b> K are removed from the printer main body 1 in a state where the ink flow path R on the printer main body 1 side is closed by the electromagnetic valve 25. Thereby, it is possible to prevent ink from flowing back from the printer main body 1 side. Further, for example, even when the sub ink tank 24 is arranged at a high position, it is possible to easily prevent the ink from overflowing from the supply port connection portion 90 when the ink containers 21C to 21K are replaced.

  Further, as described above, the protection unit 93 that protects the right side end (tip) of the slide unit 92 in a state where the ink containers 21C to 21K are removed from the printer main body 1 is provided. Thereby, since it can suppress that a user touches the right end part of the slide part 92, it can suppress that the slide part 92 is damaged or ink adheres to a user's hand.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, an inkjet recording apparatus using four colors of ink of yellow, magenta, cyan, and black has been described in order to obtain a full color image. However, an inkjet recording apparatus including colored inks of different hues has been described. It can also be used for ink jet recording apparatuses having different colors.

  In the above embodiment, the ink containers 21C to 21K mounted on the line head type ink jet printer 100 that performs recording with the recording head fixed to the recording apparatus main body have been described. However, the recording head scans the recording medium. However, the present invention can be applied to a serial type ink jet printer that performs recording in exactly the same manner.

  In the above embodiment, an example in which the electromagnetic valve 25 is provided in the ink supply tube 23 as the main body side valve for opening and closing the ink flow path R on the apparatus main body side is shown, but the present invention is not limited to this. Similarly to the ink supply port 80, a valve that opens and closes the ink flow path R may be provided in the supply port connection portion 90. Note that the main body side valve may not be provided if there is no risk of backflow of ink on the apparatus main body side because the sub ink tank 24 is disposed at a low position.

  In the above-described embodiment, the example in which the slide part 92 is provided in the second main body part 91 has been described, but the slide part 92 may be provided in the first main body part 81. Also, it is possible to provide both the first main body portion 81 and the second main body portion 91 with a slide portion that moves after the ink flow path R is closed to increase the internal volume.

1 Printer body (device body)
21C-21K Ink container 25 Solenoid valve (Main body side valve)
70 Joint mechanism 80 Ink supply port (first joint part)
81 1st body part 82 Container side valve 90 Supply port connection part (2nd joint part)
91 Second body portion 92 Slide portion 93 Protection portion 100 Inkjet printer (inkjet recording apparatus)
R ink flow path

Claims (4)

An apparatus body for forming an image using ink;
An ink container that is detachably formed with respect to the apparatus main body and stores ink to be supplied to the apparatus main body;
With
A joint mechanism is provided at the connection portion of the ink flow path of the ink container and the apparatus main body,
The joint mechanism includes a first joint portion provided on the ink container side, and a second joint portion provided on the apparatus main body side to which the first joint portion is attached and detached.
The first joint portion includes a cylindrical first main body portion through which ink passes, and a container-side valve that is disposed in the first main body portion and opens and closes an ink flow path.
The second joint part has a cylindrical second main body part through which ink passes,
Inside the front Symbol second body portion, the sliding portion of the circular cylindrical connecting the ink flow paths are arranged,
When the ink container is attached to the apparatus main body, the container-side valve moves in the first main body after the slide portion connects the ink flow paths of the first joint and the second joint. Open the ink flow path,
When removing the ink container from the apparatus main body, the container side valve moves in the first main body portion by moving the first joint portion in a direction away from the second joint portion. after closing, moves in a direction in which the sliding portion increases the internal volume of the previous SL second body portion, the internal volume of the second body section is increased by the total length of the second joint portion is longer,
The slide part has a smaller diameter than the first body part and the second body part,
On the outer peripheral surface of the second main body,
A state that is movable in a direction along the moving direction of the slide part, and that protects the tip of the slide part in a state where the ink container is removed from the apparatus main body, and the ink container is attached to the apparatus main body. A protective part that contacts the first body part and moves to the opposite side of the first body part,
A compression coil spring that urges the protection portion toward the first body portion;
An ink jet recording apparatus, wherein a is provided. The portion on the first joint portion side of the slide portion is inserted into the first main body portion with the first joint portion connected to the second joint portion. 2. An ink jet recording apparatus according to 1. While connecting the first joint portion to the second joint portion, claim 2, wherein the sliding portion is the container-side valve by pressing the container side valve is open the ink flow path 2. An ink jet recording apparatus according to 1. A main body side valve for opening and closing the ink flow path on the apparatus main body side;
In a state in which the ink flow path of the apparatus body by the main body side valve is closed, the ink-jet according to any one of claims 1 to 3, characterized in that said ink container is removed from the apparatus main body Recording device.

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