Patent Publication Number: US-11383520-B2

Title: Liquid ejection device and liquid container

Description:
BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a liquid ejection device and a liquid container. 
     Description of the Related Art 
     Some of liquid ejection devices such as ink jet printers are configured so that a liquid container that contains a liquid (ink) to be supplied is replaceable from a case and a mounting body including the liquid container is detachably mounted. A liquid container described in Japanese Patent Application Laid-Open No. 2018-65374 includes a flexible bag-shaped member in which liquid is contained and a handle provided for users to carry the liquid container (used during replacement). 
     SUMMARY OF THE INVENTION 
     A handle as described in Japanese Patent Application Laid-Open No. 2018-65374 is configured to flexibly move between a position to carry a liquid container and a position to mount the liquid container in a liquid ejection device. In such a configuration, in a case where a mounting body that stores the liquid container is mounted in the liquid ejection device, there is a possibility that the handle may press a flexible bag-shaped member due to the weight of the handle. In this case, there is a concern that the ink supply pressure may change. In addition, due to an impact, a backlash or the like generated during the mounting of the mounting body in the liquid ejection device, a situation where the handle in a free state is at an unexpected position (for example, not at a horizontal position but at an inclined position) can be caused. In this case, when the mounting body is pulled out in the horizontal direction to replace the liquid container due to the consumption of ink, there is a concern that the handle may be caught in the liquid ejection device, which makes it difficult to remove the mounting body. Therefore, the position of the handle in the mounting body mounted in the liquid ejection device is preferably maintained at a predetermined position where the above-described problem is not caused. 
     An object of the present invention is to provide a liquid ejection device and a liquid container capable of maintaining the position of a handle at a predetermined position in a state where the liquid container is mounted in the liquid ejection device. 
     A liquid ejection device of the present invention has a device main body that ejections a liquid and a liquid container that contains the liquid, in which the liquid container is attachable to and detachable from the device main body in a direction orthogonal to a width direction of the ink container, the device main body has a first fitting portion, the liquid container has a handle that rotates around an axis that extends in the width direction, and the handle has a second fitting portion that fits to the first fitting portion. 
     Further features of the present invention will become apparent from the following description of exemplary embodiments with reference to the attached drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic perspective view illustrating an external configuration in a first embodiment of a liquid ejection device of the present invention. 
         FIGS. 2A, 2B, and 2C  are schematic perspective views of a liquid container. 
         FIGS. 3A, 3B, and 3C  are enlarged views illustrating an example of fitting portions in the first embodiment. 
         FIGS. 4A, 4B, and 4C  are enlarged views illustrating another example of the fitting portions. 
         FIGS. 5A and 5B  are side views for describing the rotation of a handle. 
         FIGS. 6A, 6B, and 6C  are schematic perspective views of a liquid container in a second embodiment. 
         FIGS. 7A, 7B, and 7C  are enlarged views of a first example of fitting portions in the second embodiment. 
         FIGS. 8A, 8B, and 8C  are enlarged views of a second example of the fitting portions in the second embodiment. 
         FIGS. 9A, 9B, and 9C  are enlarged views of a third example of the fitting portions in the second embodiment. 
         FIGS. 10A, 10B, and 10C  are enlarged views of a fourth example of the fitting portions in the second embodiment. 
         FIG. 11  is a schematic perspective view of a liquid container in a third embodiment. 
         FIG. 12  is a schematic perspective view of a liquid container in a fourth embodiment. 
     
    
    
     DESCRIPTION OF THE EMBODIMENTS 
     Hereinafter, embodiments of the present invention will be described in detail using drawings. It should be noted that components described in these embodiments are given as examples of the components of the present invention and do not limit the scope of the present invention only to the components. 
     First Embodiment 
       FIG. 1  is a schematic perspective view illustrating the external configuration of a liquid ejection device  10 . As illustrated in  FIG. 1 , a mounting body  105  (the mounting body  105  is configured by storing a liquid container  100  including a bag-shaped member  110  and a connecting member  120  in a case  61 , which will be described in detail in  FIGS. 2A to 2C ) is configured to be attachable to and detachable from the liquid ejection device  10 . The liquid ejection device  10  is, for example, an ink jet printer and forms an image by ejecting ink droplets from a recording head (not illustrated) included in the liquid ejection device  10  to record ink dots on a recording medium. Ink may be, for example, a pigment ink containing a coloring component. The recording medium is, for example, printing paper. The liquid container  100  includes the bag-shaped member  110  made of a flexible bag body and the connecting member  120  that connects the bag-shaped member  110  to the liquid ejection device  10  and includes an operating portion that is attached to and detached from the case  61 . 
     The bag-shaped member  110  contains a liquid (ink) that is ejected from the recording head. When the mounting body  105  is mounted in the liquid ejection device  10 , the liquid in the bag-shaped member  110  can be supplied to the recording head. In addition, the connecting member  120  includes a liquid withdrawal port  131  and an electrical connecting portion  140  on the front end side and includes a handle  170  that attaches and detaches the bag-shaped member  110  to and from the case  61  on the rear end side. Each configuration will be described in detail below. 
     It should be noted that, in the drawings used for the following description, as illustrated in  FIG. 1 , the width direction of the liquid ejection device  10  is defined as an X axis, the depth direction of the liquid ejection device  10  (the attachment and detachment direction of the mounting body  105 ) is defined as a Y axis, and the height direction of the liquid ejection device  10  is defined as a Z axis. 
       FIGS. 2A to 2C  is a schematic perspective view of the mounting body  105  illustrated in  FIG. 1 .  FIG. 2A  is a schematic perspective view of the mounting body  105  configured by containing the liquid container  100  including the bag-shaped member  110  and the connecting member  120  in the case  61 . In addition,  FIG. 2B  is a schematic perspective view illustrating the case  61  and the liquid container  100  that are separated from each other, and  FIG. 2C  is a schematic perspective view illustrating the handle  170  separated from the connecting member  120 . The liquid container  100  has a substantially rectangular shape having the longitudinal direction in an attachment and detachment direction dl (the Y direction in  FIG. 1  or  FIGS. 2A to 2C , which will be referred to as the longitudinal direction below) with respect to the device main body. The connecting member  120  is disposed on the front end side in a mounting direction with respect to the device main body, and the bag-shaped member  110  is disposed on the rear end side. The longitudinal direction is a direction orthogonal to the width direction (the X direction in  FIGS. 2A to 2C ) of the liquid container  100 . The height of the liquid container  100  (the length in the vertical direction (the Z direction) in  FIGS. 2A to 2C  on the paper) is shorter than the length (the length of the rectangular shape in the longitudinal direction) and the width (the length of the rectangular shape in the transverse direction) of the liquid container  100 . The “height”, “length” and “width” mean the distances in the respective directions between the outermost portions of the liquid container  100  in the corresponding directions. That is, the liquid container  100  has a thin flat plate shape having a small thickness. Therefore, the liquid container  100  enables the obtainment of high stability regarding the disposition posture on the case  61 . 
     The bag-shaped member  110  configuring the liquid container  100  is a container that contains liquid inside. The bag-shaped member  110  is flexible. The bag-shaped member  110  may be flexible enough to bend due to the weight of the bag-shaped member  110  or may be flexible to an extend that the bag-shaped member  110  holds the shape against the weight, but bends when a load larger than the weight of the bag-shaped member  110  is applied. The bag-shaped member  110  has a substantially rectangular shape having the longitudinal direction in the attachment and detachment direction dl with respect to the device main body. The bag-shaped member  110  is configured by laminating two sheet members and fusing the outer peripheral end portions of the sheet members. The sheet member is formed using a material having flexibility, a gas barrier property and a liquid impermeable property. Each sheet member may be configured using a film member of, for example, polyethylene terephthalate (PET), nylon or polyethylene. Each sheet member may be configured by laminating a plurality of films made of the above-described material. In this case, for example, the outer layer may be formed using a PET or nylon film having excellent impact resistance, and the inner layer may be formed using a polyethylene film having excellent ink resistance. Furthermore, a layer on which aluminum or the like is vapor-deposited may be added to the laminated structure. 
     As illustrated in  FIG. 2A , the connecting member  120  that configures the liquid container  100  is fixed to the end portion of the mounting body  105  on the front end side in the mounting direction. The connecting member  120  has a function of being connected to a connection receiving portion of the corresponding liquid ejection device  10 , a function of attaching and detaching the liquid container  100  to and from the case  61 , and a function of fixing the liquid container  100 . The outline of the appearance of the connecting member  120  will be described. The connecting member  120  typically has a substantially rectangular parallelepiped shape having the longitudinal direction in a direction orthogonal to the longitudinal direction of the liquid container  100  on the horizontal plane (the width direction described above. Hereinafter, the direction will be referred to as the width direction). The width (the length in the width direction) of the connecting member  120  is slightly longer than the width (the length in the width direction) of the bag-shaped member  110 . The difference between these widths may be set to, for example, approximately several millimeters to several tens of millimeters. A main body portion of the connecting member  120  is produced by molding, for example, a resin member such as polypropylene. 
     The connecting member  120  has the liquid withdrawal port  131  and the electrical connecting portion  140 . The liquid withdrawal port  131  is an opening portion that opens in a direction in which the liquid container  100  is mounted in the device main body. That is, the central axis of the liquid withdrawal port  131  is parallel to the longitudinal direction. The liquid withdrawal port  131  communicates with a containing portion that is a liquid containing region inside the bag-shaped member  110  through a supply port portion that is attached to the front end portion in the direction in which the liquid container  100  is mounted in the device main body. The liquid withdrawal port  131  is provided at almost the central position in the width direction of the connecting member  120 . The liquid withdrawal port  131  is formed at almost the same height position as the bag-shaped member  110  when the bag-shaped member  110  is fixed. The mounting body  105  is mounted in the device main body, whereby a liquid introduction portion in the liquid ejection device  10  is inserted into the liquid withdrawal port  131 . 
     The electrical connecting portion  140  includes a substrate  141  configured to be connected to a device-side electrical connecting portion in the liquid ejection device  10 . A plurality of terminals is disposed on a surface of the substrate  141 . The plurality of terminals is disposed at positions corresponding to terminals in the device-side electrical connecting portion. On a surface opposite to the surface of the substrate  141 , a storage device that stores information regarding the liquid, a circuit for detecting the connection of the device-side electrical connecting portion or the like may be provided. In the present embodiment, the electrical connecting portion  140  is provided at an end portion of the connecting member  120  in the direction in which the liquid container  100  is mounted in the device main body. In addition, the electrical connecting portion  140  is positioned closer to an end side of the connecting member  120  than the liquid withdrawal port  131  in the width direction. In the connecting member  120 , a substrate disposition portion  144  configured to dispose the substrate  141  of the electrical connecting portion  140  is formed as a recess portion recessed in the longitudinal direction and in the height direction of the liquid container  100  (hereinafter, referred to as the height direction). In the substrate disposition portion  144 , an inclined surface  144   s  that faces in a direction inclined upward between the longitudinal direction and the height direction is formed. The substrate  141  is disposed to be inclined on the inclined surface  144   s  at a disposition angle that is almost parallel to the inclined surface  144   s . That is, the normal vector of a contact surface of the surface  141   s  of the substrate  141  has a vector component in the longitudinal direction and a vector component in the height direction. 
     As described above, the substrate  141  is disposed such that the surface  141   s  faces in the height direction. Therefore, when the device-side electrical connecting portion is electrically connected, the electrical connecting portion  140  electrically comes into contact with the device-side electrical connecting portion while receiving at least a force that is directed downward from the device-side electrical connecting portion. Due to this force that is directed downward, the contact state between the electrical connecting portion  140  and the device-side electrical connecting portion becomes favorable, and the electrical connectivity of the electrical connecting portion  140  is enhanced. 
     In addition, when the liquid container  100  is removed from a case storage portion of the liquid ejection device  10  together with the case  61 , due to the force that is received from the device-side electrical connecting portion and is directed downward, the movement of the liquid container  100  from the liquid ejection device  10  in the removal direction is assisted. Therefore, the removal of the liquid container  100  from the liquid ejection device  10  is simplified. The substrate  141  is installed at a deep position in the substrate disposition portion  144 . The substrate  141  is sandwiched by two wall portions  145  that protrude in the longitudinal direction and in the height direction from the surface  141   s  of the substrate  141  on both sides in the width direction. These wall portions  145  function as members that protect the substrate  141 . Therefore, the substrate  141  can be prevented from being damaged when, for example, a user accidentally touches the substrate  141  or the liquid container  100  accidentally drops. 
     The case  61  has a substantially rectangular parallelepiped shape having the longitudinal direction in the attachment and detachment direction dl with respect to the device main body. The case  61  is formed as a hollow box body that is open in an upper portion on the horizontal plane. The case  61  is produced using, for example, a resin member of polypropylene or the like. The case  61  includes a bottom surface wall portion  200 , two side wall portions  201  and  202 , two rear surface wall portions  203 , and a front surface wall portion  205 . The bottom surface wall portion  200  is a substantially rectangular wall portion that configures the bottom surface portion of the case  61  and extends in the longitudinal direction and in the width direction. In the present specification, the expression “extend” means a configuration that continuously extends in a certain direction without being divided. In the middle of the extension, a protrusion and a recess, a curved portion, a hole portion, and a joined portion may be provided. The liquid container  100  is disposed on the bottom surface wall portion  200 . The bottom surface wall portion  200  has a size large enough to accommodate at least the entire bag-shaped member  110  when the liquid container  100  is disposed. The heights of the side wall portions  201  and  202  almost coincide with the height of the connecting member  120  in the liquid container  100 . The two rear surface wall portions  203  stand in the height direction at an end portion of the bottom surface wall portion  200  in the longitudinal direction. Each of the rear surface wall portions  203  is provided at either end in the width direction and is coupled to one of the two side wall portions  201  and  202  that is present on the same side in the width direction. In a state where the liquid container  100  is contained in the case  61 , the liquid withdrawal port  131  is disposed between the two rear surface wall portions  203 . The heights of the two rear surface wall portions  203  are lower than the heights of the side wall portions  201  and  202 , respectively. The two rear surface wall portions  203  are formed so as to cover portions lower than the electrical connecting portion  140  of the connecting member  120  and a liquid container-side fitting portion  155 , which is a second fitting portion, in a state where the liquid container  100  is contained in the case  61 . The front surface wall portion  205  extends in the width direction and in the height direction at an end portion of the bottom surface wall portion  200  in the removal direction of the liquid container  100  from the liquid ejection device  10  and is coupled to the bottom surface wall portion  200  and the two side wall portions  201  and  202 . 
     The handle  170  is a portion that a user grips when moving the liquid container  100  for the attachment to or detachment from the case  61  or the like. In the present embodiment, the handle  170  is produced by molding a resin member of polypropylene or the like.  FIG. 2B  is a schematic perspective view illustrating the appearance of the liquid container  100  removed from the case  61 . As illustrated in  FIG. 2B , the handle  170  includes a grip portion  171 , two coupling portions  172  and  173 , two base end portions  174  and  175 , and the liquid container-side fitting portion  155 . The grip portion  171  is a portion for the user to put a hand on. The grip portion  171  extends in the width direction. In the present embodiment, the length of the grip portion  171  in the width direction is slightly shorter than the length of the connecting member  120  in the width direction and is slightly longer than the length of the bag-shaped member  110  in the width direction. The two coupling portions  172  and  173  extend in the longitudinal direction from both ends of the grip portion  171 . The coupling portion  172  couples one end portion of the grip portion  171  in the width direction and the base end portion  174 . The coupling portion  173  couples the other end portion of the grip portion  171  in the width direction and the base end portion  175 . The base end portions  174  and  175  are axial portions having a substantially cylindrical shape, respectively, and protrude so as to face each other along the width direction. It is desirable that the grip portion  171  and the coupling portions  172  and  173  are appropriately thinned in order for weight reduction. The base end portion  174  protrudes at an end portion of the coupling portion  172  in a direction toward the inside of the liquid container  100  in the width direction. The base end portion  175  protrudes at an end portion of the coupling portion  173  in a direction toward the inside of the liquid container  100  in the width direction. Each of the two base end portions  174  and  175  is connected to a fixing portion  176  of the connecting member  120 . Due to the fixing portion  176 , the handle  170  is fixed to the connecting member  120  so as to be capable of rotating around an axis that extends in the width direction. In the present embodiment, the fixing portion  176  is configured using a shaft hole that extends in the width direction, and each of the base end portions  174  and  175  is inserted into the shaft hole in the width direction. The handle  170  is provided at a position where the handle  170  is exposed in a state where the liquid container  100  is contained in the case  61 . The handle  170  is provided at a position where the user is able to see and operate the handle  170 . The handle  170  rotates with respect to the connecting member  120  according to the user&#39;s operation. The handle  170  is capable of rotating in both directions, that is, a direction from the bag-shaped member  110  side toward the connecting member  120  side and a direction from the connecting member  120  toward the bag-shaped member  110 . The rotation axis, which is the center of the rotation of the handle  170 , coincides with the central axes of the two base end portions  174  and  175 . When the handle  170  rotates and the liquid container-side fitting portion  155  hits an abutting surface  158 , the rotation is stopped. The handle  170  rotates around the central axes (hereinafter, referred to as the rotation axis RX) of the two base end portions  174  and  175  of the handle  170 . 
     The use of the handle  170  enhances convenience at the time of the handling of the liquid container  100  such as the carrying of the liquid container  100  and the attachment to or detachment from the case  61 . Particularly, in the present embodiment, the handle  170  has the grip portion  171  that extends in the width direction, thereby having a shape that the user easily grips. In addition, the handle  170  is fixed to the connecting member  120  at two points of the base end portions  174  and  175  and can be stably rotated. As described above, according to the shape of the handle  170  of the present embodiment, since high operability can be obtained, the ease of handling the liquid container  100  is enhanced. 
     The liquid container-side fitting portion  155  is provided at an end portion of the handle  170  in the mounting direction of the mounting body  105 .  FIG. 2C  is a schematic perspective view illustrating the appearance of the handle  170  removed from the connecting member  120 . As illustrated in  FIG. 2C , the liquid container-side fitting portion  155  is provided on an extension line from the coupling portion  172  of the handle  170  and at a position facing the grip portion  171  across the base end portion  174 . The liquid container-side fitting portion  155  is provided on a side opposite to the electrical connecting portion  140  across the liquid withdrawal port  131  in the width direction. The liquid container-side fitting portion  155  has a protrusion and recess structure in which a plurality of substantially rectangular second combs  156  that extend in parallel in the mounting direction are arranged. Regarding the arrangement pattern in the width direction of the combs  156  and valley portions  157 , which are recessed portions formed between the combs  156 , in the liquid container-side fitting portion  155 , the protrusions and the recesses are opposite to protrusions and recesses in the arrangement pattern in the protrusion and recess structure of a fitting portion (first fitting portion) inside the liquid ejection device  10  that is a connection target. The liquid ejection device  10  is provided with a plurality of connection receiving portions (slots) for the mounting of the liquid container  100 , and the connection receiving portion in which the liquid container  100  is mounted is determined depending on the type (for example, color) of ink that is contained in the liquid container  100 . When the liquid container  100  is moved in the mounting direction and is connected to the corresponding liquid ejection device  10 , in a case where the combination of the liquid container  100  and the connection receiving portion is appropriate, fitting between the protrusion and recess structure of the fitting portion on the on the liquid ejection device  10  side and the protrusion and recess structure of the liquid container-side fitting portion  155  of the liquid container  100  is allowed. On the other hand, in a case where the combination between the liquid container  100  and the connection receiving portion is not appropriate, the protrusion and recess structure of the fitting portion on the liquid ejection device  10  side does not match the protrusion and recess structure of the liquid container-side fitting portion  155  of the liquid ejection device  10 , the liquid container  100  and the connection receiving portion cannot be fitted to each other. Therefore, the connection of an unmatched wrong liquid container  100  to the connection receiving portion is suppressed. 
     It should be noted that at least a part of the surface of the handle  170  is colored with the color of ink that is contained in the liquid container  100 , and furthermore, as the protrusion and recess structure of the liquid container-side fitting portion  155  of the liquid container  100 , a structure (shape) that corresponds to the protrusion and recess structure of the fitting portion of the connection receiving portion in which the liquid container  100  for the ink with the above-described color is to be contained is provided. Therefore, the connecting member  120  having a combination of the handle  170  for each color and the liquid container-side fitting portion  155  can be produced, and the number of components can be reduced. 
       FIGS. 3A to 3C  is an enlarged view illustrating an example of a device-side fitting portion  55  inside the liquid ejection device  10  and the liquid container-side fitting portion  155  in the present embodiment.  FIG. 3A  is a top view,  FIG. 3B  is a side view of the structure of  FIG. 3A  seen in a direction A illustrated in  FIG. 3A , and  FIG. 3C  is a side view of the structure of the device-side fitting portion  55  and the liquid container-side fitting portion  155  fitted to each other seen in the direction A illustrated in  FIG. 3A . The device-side fitting portion  55 , which is the first fitting portion, and the liquid container-side fitting portion  155 , which is the second fitting portion, have protrusion and recess structures (complementary structures) in which the arrangement patterns in the width direction are opposite to each other, whereby rattling in the width direction during fitting can be suppressed. As described above, the liquid ejection device  10 -side fitting portion  55  has combs  54  that regulate the liquid container  100  that can be mounted in the liquid ejection device  10  main body, and the liquid container-side fitting portion  155  has the combs  156  that regulate the liquid container  100  that can be mounted in the liquid ejection device  10  main body. The combs  54  are first combs in which a plurality of plate materials is arranged in the width direction, and the combs  156  are second combs in which a plurality of plate materials is arranged in the width direction. In addition, the ridge line of each comb  156  of the liquid container-side fitting portion  155  is provided with a tapering shape such that the liquid container  100  stored in the case  61  can be fitted into the liquid ejection device  100  without any resistance at the time of mounting the liquid container  100  in the liquid ejection device  10 . The liquid container-side fitting portion  155  is integrated with the handle  170  and rotates around the rotation axis RX in conjunction with the rotation of the handle  170  around the rotation axis RX (refer to  FIGS. 5A and 5B ). During the fitting of the device-side fitting portion  55  and the liquid container-side fitting portion  155 , in order to hinder the rotation of the liquid container-side fitting portion  155  around the rotation axis RX, in the device-side fitting portion  55  and the liquid container-side fitting portion  155 , rotation stoppers  56  and  57 , which are a first rotation regulating portion and a second rotation regulating portion, are provided, respectively, at the lower portions of the protrusion and recess structures. As illustrated in  FIG. 3C , when the liquid container  100  is mounted in the liquid ejection device  10  main body, and the device-side fitting portion  55  and the liquid container-side fitting portion  155  are fitted to each other, the rotation stopper  56  and the combs  156  abut or face each other, which regulates the upward rotation of the handle  170  around the width direction. In addition, when the liquid container  100  is mounted in the liquid ejection device  10  main body, and the device-side fitting portion  55  and the liquid container-side fitting portion  155  are fitted to each other, the rotation stopper  57  and the combs  54  abut or face each other, which regulates the downward rotation of the handle  170  around the width direction. The rotation stopper  56  is a first flat plate that is provided on the lower surfaces of the combs  54  and is retracted inward from the combs  54 . The rotation stopper  57  is a second flat plate that is provided on the lower surfaces of the combs  156  and is retracted inward from the combs  156 . 
     Since the position of the handle is regulated by forming the liquid container-side fitting portion  155  in the handle  170  as described above, the configuration of a pressurized state in the bag-shaped member  110  is regulated. In addition, in a case where the mounting body  105  is mounted in the device, the handle is not inclined due to a backlash or the like, and there is not a concern that the handle may be caught in the liquid ejection device, which makes it difficult to remove the mounting body is removed. 
       FIGS. 4A to 4C  is an enlarged view illustrating another example of the device-side fitting portion  55  inside the liquid ejection device  10  and the liquid container-side fitting portion  155  in the present embodiment.  FIG. 4A  is a top view,  FIG. 4B  is a side view of the structure of  FIG. 4A  seen in a direction A illustrated in  FIG. 4A , and  FIG. 4C  is a side view of the structure of the device-side fitting portion  55  and the liquid container-side fitting portion  155  fitted to each other seen in the direction A illustrated in  FIG. 4A . The structures of the combs  54  and the combs  156  are the same as those illustrated in  FIGS. 3A to 3C . During the fitting of the device-side fitting portion  55  and the liquid container-side fitting portion  155 , in order to hinder the rotation of the liquid container-side fitting portion  155  around the rotation axis RX (refer to  FIGS. 5A and 5B ), in the device-side fitting portion  55  and the liquid container-side fitting portion  155 , the rotation stoppers  56  and  57 , which are the first rotation regulating portion and the second rotation regulating portion, are provided, respectively, at the upper portions of the protrusion and recess structures. As illustrated in  FIG. 4C , when the liquid container  100  is mounted in the liquid ejection device  10  main body, and the device-side fitting portion  55  and the liquid container-side fitting portion  155  are fitted to each other, the rotation stopper  57  and the combs  54  abut or face each other, which regulates the upward rotation of the handle  170  around the width direction. In addition, when the liquid container  100  is mounted in the liquid ejection device  10  main body, and the device-side fitting portion  55  and the liquid container-side fitting portion  155  are fitted to each other, the rotation stopper  56  and the combs  156  abut or face each other, which regulates the downward rotation of the handle  170  around the width direction. The rotation stopper  56  is a first flat plate that is provided on the upper surface of the combs  54  and is retracted inward from the combs  54 . The rotation stopper  57  is a second flat plate that is provided on the upper surface of the combs  156  and is retracted inward from the combs  156 . 
     As described above, the position of the handle  170  is regulated when the mounting body is mounted in the device by the correlation between the rotation stopper  56  provided in the device-side fitting portion  55  and the rotation stopper  57  provided in the liquid container-side fitting portion  155 . That is, in a state where the liquid container  100  is mounted in the liquid ejection device  10 , the grip portion  171  of the handle  170  is held at a position separated from the bag-shaped member  110 . Therefore, in the mounting state of the liquid container  100  in the liquid ejection device  10 , the bag-shaped member  110  is not pressed by the handle  170 . Therefore, the deterioration of the pressure state in the containing portion in the bag-shaped member  110  by a pressure that is received from the handle  170  is suppressed. In addition, in the state where the liquid container  100  is mounted in the liquid ejection device  10 , the handle  170  does not protrude in the height direction of the case  61 . Therefore, there is no case where the handle  170  is fixed higher than usual due to a backlash or the like generated during the mounting of the liquid container  100  in the liquid ejection device  10 , and there is no case where the case  61  is caught in the liquid ejection device  10  at the time of pulling out the case  61  in the horizontal direction, which makes it difficult to remove the case  61 . 
       FIGS. 5A and 5B  is a side view of the handle  170  for describing the rotation of the handle  170 . The rotation range of the handle  170  in a direction separated from the bag-shaped member  110  is regulated by the liquid container-side fitting portion  155  and the rotation abutting surface  158 . As illustrated in  FIG. 5A , the rotation abutting surface  158  is provided in a direction opposite to the height direction of the connecting member  120  with respect to the liquid container-side fitting portion  155  in a mounted state. At the time of removing the liquid container  100  from the case  61 , when the grip portion  171  of the handle  170  is lifted in the height direction of the connecting member  120 , symmetrically with respect to the rotation axis RX, the liquid container-side fitting portion  155  descends in a direction opposite to the height direction of the connecting member  120 . When the liquid container-side fitting portion  155  hits the rotation abutting surface  158 , the rotation of the handle  170  is stopped, and the liquid container  100  can be removed from the case  61  by further lifting the grip portion  171  ( FIG. 5B ). 
     According to the present embodiment, in a state where the liquid container  100  is mounted in the liquid ejection device  10 , when the liquid container-side fitting portion  155  that is integrated with the handle  170  is fitted to the device-side fitting portion  55  provided in the liquid ejection device  10 , rotation around the rotation axis RX is suppressed. Therefore, the handle  170  is fixed at a certain position during the mounting of the liquid container  100  in the liquid ejection device  10 . Therefore, one of the deterioration of the pressure state in the bag-shaped member, which is a bag-shaped member, and the generation of a disadvantage during removal can be suppressed as described above. 
     Second Embodiment 
       FIGS. 6A to 6C  is a schematic perspective view of a liquid container  100   b  that is contained in a liquid ejection device in a second embodiment.  FIG. 6A  is a schematic perspective view of a mounting body in which the liquid container  100   b  in the second embodiment is contained. The state illustrated by  FIG. 6A  is a state of a mounting body  105   b  in which the liquid container  100   b  is housed in the case  61 . The liquid container  100   b  is an ink pack and includes the bag-shaped member  110  and a connecting member  120   b .  FIG. 6B  is a schematic perspective view illustrating the appearance of the liquid container  100   b  removed from the case  61 . As illustrated in  FIG. 6B , a handle  170   b  includes the grip portion  171 , the two coupling portions  172  and  173 , the two base end portions  174  and  175 , and a liquid container-side fitting portion  155   b . In the connecting member  120   b , the structure of the liquid container-side fitting portion  155   b  that is provided in the connecting member  120   b  is different from the structure of the liquid container-side fitting portion  155  that is provided in the connecting member  120  in the first embodiment. 
     The liquid container-side fitting portion  155   b  is provided at an end portion of the handle  170   b  in a mounting direction of the mounting body  105   b .  FIG. 6C  is a schematic perspective view illustrating the appearance of the handle  170   b  removed from the connecting member  120   b . As illustrated in  FIG. 6C , the position of the liquid container-side fitting portion  155   b  provided in the handle  170   b  is the same as the position of the liquid container-side fitting portion  155  provided in the first embodiment. Regarding the arrangement pattern of the protrusions and the recesses in the width direction in the combs  156  and the valley portions  157 , which are formed between the combs  156 , in the liquid container-side fitting portion  155   b , the protrusions and the recesses are opposite to protrusions and recesses in the arrangement pattern in the protrusion and recess structure of a fitting portion inside the liquid ejection device  10  that is a connection target. The liquid ejection device  10  is provided with a plurality of connection receiving portions (slots) for the mounting of a plurality of the liquid containers  100   b , and the connection receiving portion in which the liquid container  100   b  is mounted is determined depending on the color of ink that is contained in the liquid container  100   b . In addition, similar to the first embodiment, the handle  170   b  is colored with the color of ink that is contained in the liquid container  100   b , and furthermore, as the protrusion and recess structure of the liquid container-side fitting portion  155   b  of the liquid container  100   b , a structure (shape) that corresponds to the protrusion and recess structure of the fitting portion of the connection receiving portion in which the liquid container  100   b  for the ink with the above-described color is to be contained is provided. 
     As described below, in the second embodiment, rotation stoppers  56   b  and  57   b  are configured to fully cover a device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b.    
       FIGS. 7A to 7C  are enlarged views of a first example of the device-side fitting portion  55   b  inside the liquid ejection device  10  and the liquid container-side fitting portion  155   b  on the liquid container  100   b  side in the present embodiment.  FIG. 7A  is a top view,  FIG. 7B  is a side view of the structure of  FIG. 7A  seen in a direction A illustrated in  FIG. 7A , and  FIG. 7C  is a side view of the structure of the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b  fitted to each other seen in the direction A illustrated in  FIG. 7A . The structures and the arrangement patterns in the width direction of the respective combs  54  and combs  156  of the device-side fitting portion  55   b , which is the first fitting portion, and the liquid container-side fitting portion  155   b , which is the second fitting portion, are the same as those in the first embodiment. The liquid container-side fitting portion  155   b  is integrated with the handle  170   b  and rotates around the rotation axis RX in conjunction with the rotation of the handle  170   b  around the rotation axis RX (refer to  FIGS. 5A and 5B ). During the fitting of the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , in order to hinder the rotation of the liquid container-side fitting portion  155   b  around the rotation axis RX, as shown in  FIG. 7B , in the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , rotation stoppers  56   b  and  57   b , which are a first rotation regulating portion and a second rotation regulating portion, are provided, respectively, at the lower portions of the protrusion and recess structures and throughout the entire fitting portions. The rotation stopper  56   b  is a first flat plate that is provided in spaced apart relationship from the lower surfaces of the combs  54 , thereby forming slot  56   c  between the rotation stopper  56   b  and the lower surfaces of the combs  54 . The rotation stopper  57   b  can be inserted into the slot  56   c . The rotation stopper  57   b  is a second flat plate that is provided on the lower surfaces of the combs  156 . As illustrated in  FIG. 7C , in a state where the liquid container  100   b  is mounted in the liquid ejection device  10  main body, the rotation stopper  56   b  abuts or faces the rotation stopper  57   b , and the rotation stopper  57   b  abuts or faces the combs  54  and the rotation stopper  56   b.    
     The rotation stoppers are configured throughout the entire fitting portions, whereby a stronger rotation-stopping effect can be exhibited than in the configuration of the rotation stoppers formed halfway as in the first embodiment. Reliability as a structure is enhanced by improving the structural strength. 
       FIGS. 8A to 8C  are enlarged views of a second example of the device-side fitting portion  55   b  inside the liquid ejection device  10  and the liquid container-side fitting portion  155   b  in the present embodiment.  FIG. 8A  is a top view,  FIG. 8B  is a side view of the structure of  FIG. 8A  seen in a direction A illustrated in  FIG. 8A , and  FIG. 8C  is a side view of the structure of the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b  fitted to each other seen in the direction A illustrated in  FIG. 8A . The structures and the arrangement patterns in the width direction of the respective combs  54  and combs  156  of the device-side fitting portion  55   b , which is the first fitting portion, and the liquid container-side fitting portion  155   b , which is the second fitting portion, are the same as those in the first embodiment. The liquid container-side fitting portion  155   b  is integrated with the handle  170   b  and rotates around the rotation axis RX in conjunction with the rotation of the handle  170   b  around the rotation axis RX (refer to  FIGS. 5A and 5B ). During the fitting of the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , in order to hinder the rotation of the liquid container-side fitting portion  155   b  around the rotation axis RX, as shown in  FIG. 8B , in the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , rotation stoppers  56   b  and  57   b , which are a first rotation regulating portion and a second rotation regulating portion, are provided, respectively, at the lower portions of the protrusion and recess structures. The rotation stopper  56   b  is a first flat plate that is provided on the lower surfaces of the combs  54 . The rotation stopper  57   b  is a second flat plate that is provided in spaced apart relationship from the lower surfaces of the combs  156 , thereby forming slot  56   c  between the lower surfaces of the combs  156  and the rotation stopper  57   b . The rotation stopper  56   b  can be inserted into the slot  56   c . In this structure, the configuration of the rotation stoppers  56   b  and  57   b  is opposite to the configuration illustrated in  FIG. 7B . As illustrated in  FIG. 8C , in a state where the liquid container  100   b  is mounted in the liquid ejection device  10  main body, the rotation stopper  56   b  abuts or faces the combs  156  and the rotation stopper  57   b , and the rotation stopper  57   b  abuts or faces the rotation stopper  56   b.    
       FIGS. 9A to 9C  are enlarged views of a third example of the device-side fitting portion  55   b  inside the liquid ejection device  10  and the liquid container-side fitting portion  155   b  in the present embodiment.  FIG. 9A  is a top view,  FIG. 9B  is a side view of the structure of  FIG. 9A  seen in a direction A illustrated in  FIG. 9A , and  FIG. 9C  is a side view of the structure of the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b  fitted to each other seen in the direction A illustrated in  FIG. 9A . Due to the disposition of the rotation stopper  56   b  and the rotation stopper  57   b , the combs  54  and the combs  156  are not visible from above the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , respectively, and are thus indicated by broken lines in  FIG. 9A . The structures and the arrangement patterns in the width direction of the respective combs  54  and combs  156  of the device-side fitting portion  55   b , which is the first fitting portion, and the liquid container-side fitting portion  155   b , which is the second fitting portion, are the same as those in the first embodiment. The liquid container-side fitting portion  155   b  is integrated with the handle  170   b  and rotates around the rotation axis RX in conjunction with the rotation of the handle  170   b  around the rotation axis RX (refer to  FIGS. 5A and 5B ). During the fitting of the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , in order to hinder the rotation of the liquid container-side fitting portion  155   b  around the rotation axis RX, in the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , rotation stoppers  56   b  and  57   b , which are a first rotation regulating portion and a second rotation regulating portion, are provided, respectively, at the upper portions of the protrusion and recess structures. The rotation stopper  56   b  is a first flat plate that is provided in spaced apart relationship from the upper surfaces of the combs  54 , thereby forming slot  56   c  between the rotation stopper  56   b  and the upper surfaces of the combs  54 . The rotation stopper  57   b  can be inserted into the slot  56   c . The rotation stopper  57   b  is a second flat plate that is provided on the upper surfaces of the combs  156  and throughout the entire fitting portion. As illustrated in  FIG. 9C , in a state where the liquid container  100   b  is mounted in the liquid ejection device  10  main body, the rotation stopper  56   b  abuts or faces the rotation stopper  57   b , and the rotation stopper  57   b  abuts or faces the combs  54  and the rotation stopper  56   b.    
       FIGS. 10A to 10C  are enlarged views of a fourth example of the device-side fitting portion  55   b  inside the liquid ejection device  10  and the liquid container-side fitting portion  155   b  in the present embodiment.  FIG. 10A  is a top view,  FIG. 10B  is a side view of the structure of  FIG. 10A  seen in a direction A illustrated in  FIG. 10A , and  FIG. 10C  is a side view of the structure of the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b  fitted to each other seen in the direction A illustrated in  FIG. 10A . Due to the disposition of the rotation stopper  56   b  and the rotation stopper  57   b , the combs  54  and the combs  156  are not visible from above the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , respectively, and are thus indicated by broken lines in  FIG. 10A . The structures and the arrangement patterns in the width direction of the respective combs  54  and combs  156  of the device-side fitting portion  55   b , which is the first fitting portion, and the liquid container-side fitting portion  155   b , which is the second fitting portion, are the same as those in the first embodiment. The liquid container-side fitting portion  155   b  is integrated with the handle  170   b  and rotates around the rotation axis RX in conjunction with the rotation of the handle  170   b  around the rotation axis RX (refer to  FIGS. 5A and 5B ). During the fitting of the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , in order to hinder the rotation of the liquid container-side fitting portion  155   b  around the rotation axis RX, in the device-side fitting portion  55   b  and the liquid container-side fitting portion  155   b , rotation stoppers  56   b  and  57   b , which are a first rotation regulating portion and a second rotation regulating portion, are provided, respectively, at the upper portions of the protrusion and recess structures. The rotation stopper  56   b  is a first flat plate that is provided on the upper surfaces of the combs  54 . The rotation stopper  57   b  is a second flat plate that is provided in spaced apart relationship from the upper surfaces of the combs  156 , thereby forming slot  56   c  between the upper surfaces of the combs  156  and the rotation stopper  57   b . The rotation stopper  56   b  can be inserted into the slot  56   c . The configuration of the rotation stopper  57   b  is opposite to the configuration in  FIG. 9B . As illustrated in  FIG. 10C , in a state where the liquid container  100   b  is mounted in the liquid ejection device  10  main body, the rotation stopper  56   b  abuts or faces the combs  156  and the rotation stopper  57   b , and the rotation stopper  57   b  abuts or faces the rotation stopper  56   b.    
     According to the present embodiment, in a state where the liquid container  100   b  is mounted in the liquid ejection device  10 , when the liquid container-side fitting portion  155   b  that is integrated with the handle  170   b  is fitted to the device-side fitting portion  55   b  provided in the liquid ejection device  10 , rotation around the rotation axis RX is suppressed. Therefore, the handle  170   b  is fixed at a certain position during the mounting of the liquid container  100   b  in the liquid ejection device  10 . Therefore, one of the deterioration of the pressure state of the bag-shaped member as described above and the generation of a disadvantage during removal can be suppressed. 
     In addition, the rotation stoppers are configured throughout the entire fitting portions, whereby a stronger rotation-stopping effect can be exhibited than in the configuration of the rotation stoppers formed halfway as in the first embodiment. Reliability as a structure is enhanced by improving the structural strength. 
     Third Embodiment 
     The electrical connecting portion may be integrated with the handle.  FIG. 11  is a schematic perspective view of a mounting body  105   c  when a liquid container  100   c  is removed from the case  61  in a third embodiment. The third embodiment is an aspect in which an electrical connecting portion is provided in the handle of the first embodiment. The mounting body  105   c  is made up of the liquid container  100   c  and the case  61 . A handle  170   c  in the liquid container  100   c  has the liquid container-side fitting portion  155  and an electrical connecting portion  140   c . The electrical connecting portion  140   c  is provided at an end portion of the handle  170   c  in a mounting direction of the mounting body  105   c . The electrical connecting portion  140   c  is provided on an extension line from the coupling portion  173  of the handle  170   c  and at a position opposite to the grip portion  171  across the base end portion  175 . The electrical connecting portion  140   c  includes a substrate  141   c  configured to be connected to a device-side electrical connecting portion. A plurality of terminals is disposed on a surface  141   sc  of the substrate  141   c . The plurality of terminals is disposed at positions corresponding to terminals in the device-side electrical connecting portion. On a surface opposite to the surface  141   sc  of the substrate  141   c , a storage device that stores information regarding the liquid, a circuit for detecting the connection of the device-side electrical connecting portion, or the like may be provided. To a substrate disposition portion  144   c  in which the substrate  141   c  is disposed, an inclined surface  144   sc  that faces in a direction inclined upward between the longitudinal direction and the height direction is fixed by a processing method such as heat swaging. The electrical connecting portion  140   c  is disposed to be inclined on the inclined surface  144   sc  at a disposition angle that is almost parallel to the inclined surface  144   sc . That is, the normal vector of a contact surface of the surface  141   sc  of the substrate  141   c  has a vector component in the longitudinal direction and a vector component in the height direction. The substrate  141   c  in a mounted state is installed at a deep position in the substrate disposition portion  144   c . The substrate  141   c  is sandwiched by two wall portions  145  that protrude in the longitudinal direction and in the height direction from the surface  141   sc  of the substrate  141   c  on both sides in the width direction. In the present embodiment, when the grip portion  171  of the handle  170   c  is lifted in the height direction, symmetrically with respect to the rotation axis RX, the electrical connecting portion  140   c  descends in a direction opposite to the height direction. This rotation moves the electrical connecting portion  140   c  deeper into a portion between the wall portions  145 , which enables the prevention of the electrical connecting portion  140   c  being damaged by the user&#39;s accidental touching of the substrate  141   c  at the time of removing the liquid container  100   c . In addition, in the present embodiment, the structure of the liquid container-side fitting portion  155  adopts the same configuration as the configuration described in Example 1. The liquid container-side fitting portion  155  is fitted to the fitting portion in the liquid ejection device  10 , whereby the handle  170   c  is also fixed at a certain position. Therefore, the position of the electrical connecting portion  140   c  also becomes constant in the mounted state, and poor contact with a device-side electrical connecting portion is suppressed. 
     In a case where the electrical connecting portion is provided in the handle as described above, the structure of the liquid container-side fitting portion  155  provided to suppress unnecessary turning of the handle can also be used as a positioning structure of the electrical connecting portion. 
     Fourth Embodiment 
       FIG. 12  is a schematic perspective view of a mounting body  105   d  when a liquid container  100   d  is removed from the case  61  in a fourth embodiment. The fourth embodiment is an aspect in which an electrical connecting portion is provided in the handle of the second embodiment. The mounting body  105   d  is made up of the liquid container  100   d  and the case  61 . A handle  170   d  in the liquid container  100   d  has the liquid container side fitting portion  155   b  and the electrical connecting portion  140   c . The electrical connecting portion  140   c  is provided at an end portion of the handle  170   d  in a mounting direction of the mounting body  105   d . The electrical connecting portion  140   c  is provided on an extension line from the coupling portion  173  of the handle  170   d  and at a position opposite to the grip portion  171  across the base end portion  175 . The electrical connecting portion  140   c  includes a substrate  141   c  configured to be connected to a device-side electrical connecting portion. A plurality of terminals is disposed on a surface  141   sc  of the substrate  141   c . The plurality of terminals is disposed at positions corresponding to terminals in the device-side electrical connecting portion. On a surface opposite to the surface  141   sc  of the substrate  141   c , a storage device that stores information regarding the liquid, a circuit for detecting the connection of the device-side electrical connecting portion, or the like may be provided. To a substrate disposition portion  144   c  in which the substrate  141   c  is disposed, an inclined surface  144   sc  that faces in a direction inclined upward between the longitudinal direction and the height direction is fixed by a processing method such as heat swaging. The electrical connecting portion  140   c  is disposed to be inclined on the inclined surface  144   sc  at a disposition angle that is almost parallel to the inclined surface  144   sc . That is, the normal vector of a contact surface of the surface  141   sc  of the substrate  141   c  has a vector component in the longitudinal direction and a vector component in the height direction. The substrate  141   c  in a mounted state is installed at a deep position in the substrate disposition portion  144   c . The substrate  141   c  is sandwiched by two wall portions  145  that protrude in the longitudinal direction and in the height direction from the surface  141   sc  of the substrate  141   c  on both sides in the width direction. In the present embodiment, when the grip portion  171  of the handle  170   d  is lifted in the height direction, symmetrically with respect to the rotation axis RX, the electrical connecting portion  140   c  descends in a direction opposite to the height direction. This rotation moves the electrical connecting portion  140   c  deeper into a portion between the wall portions  145 , which enables the prevention of the electrical connecting portion  140   c  being damaged by the user&#39;s accidental touching of the substrate  141   c  at the time of removing the liquid container  100   d . In addition, in the present embodiment, the structure of the liquid container-side fitting portion  155   b  adopts the same configuration as the configuration described in the second embodiment. The liquid container-side fitting portion  155   b  is fitted to the fitting portion in the liquid ejection device  10 , whereby the handle  170   d  is also fixed at a certain position. Therefore, the position of the electrical connecting portion  140   c  also becomes constant in the mounted state, and poor contact with a device-side electrical connecting portion is suppressed. 
     In a case where the electrical connecting portion is provided in the handle as described above, the structure of the liquid container-side fitting portion  155  provided to suppress unnecessary turning of the handle can also be used as a positioning structure of the electrical connecting portion. 
     It should be noted that the second fitting portion and the electrical connecting portion need to be provided on both sides of the liquid withdrawal port, respectively, and which one needs to be on the right side of the liquid withdrawal port and which one needs to be on the left side of the liquid withdrawal port is not limited. However, it is needless to say that the respective positions of the second fitting portion and the electrical connecting portion are positions corresponding to the respective positions of the fitting portion inside the liquid container and the device-side electrical connecting portion. 
     According to the present invention, the position of the handle can be maintained at a predetermined position in a state where the liquid container is mounted in the liquid ejection device. 
     While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions. 
     This application claims the benefit of Japanese Patent Application No. 2020-030487, filed Feb. 26, 2020, and Japanese Patent Application No. 2020-186971, filed Nov. 10, 2020 which are hereby incorporated by reference herein in their entirety.