JP2021070251A - Liquid replenishing device - Google Patents

Abstract

To provide a liquid replenishing device configured to be able to suppress a finger of a user from touching an end part of a liquid supply tube when attaching and detaching the liquid supply tube to and from an injection port of a liquid tank, so as to avoid the finger of the user from getting dirty with liquid.SOLUTION: A liquid replenishing device comprises: a liquid tank 110 which has a storage chamber 111 that stores liquid and an injection part 112 comprising an injection port communicated with the storage chamber; and a main body part that has a liquid flow path 122 formed of a first opening and a second opening and a gas flow path 123 formed of a third opening and a fourth opening, where the main body part can be attached and detached to and from the injection part. The device further comprises a liquid supply tube 120 that has a first end at which the first opening and the third opening are arranged and a second end at which at least the second opening of the second opening and the fourth opening is arranged, and a cap member 130 covering the first end. The liquid supply tube can be attached and detached together with the cap member to and from the injection part.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a liquid replenisher used to replenish a liquid tank with liquid.

Conventionally, an inkjet printer equipped with an ink tank that allows a user to replenish ink many times has been known. A gas-liquid exchange method is known as a method of replenishing ink to such an ink tank. In this gas-liquid exchange method, ink is replenished from the inside of the ink bottle into the ink tank by using an ink supply cylinder having an ink flow path through which ink flows and an air flow path through which air flows.

That is, the user attaches the ink supply cylinder to the injection portion of the ink tank. Then, the user inserts the end portion of the ink supply cylinder located outside the ink tank into the tip end portion of the ink bottle with the ink supply cylinder attached to the injection portion of the ink tank. As a result, the ink in the ink bottle flows through the ink flow path and flows out into the ink tank, while the air in the ink tank flows through the air flow path and flows out into the ink bottle. By simultaneously generating the ink flow in the ink flow path and the air flow in the air flow path, ink is replenished from the ink bottle to the ink tank by gas-liquid exchange (for example). , Patent Document 1).

JP-A-2018-161887

However, in the conventional configuration, when the ink supply cylinder is attached to or detached from the injection portion of the ink tank, particularly when the ink supply is finished and the ink supply cylinder is removed from the injection portion of the ink tank, the user's finger supplies the ink. There is a problem that the user's fingers may be soiled with ink because they may come into contact with the cylinder.

The present disclosure has been made in view of the above circumstances, and it is possible to prevent the user's fingers from coming into contact with the end of the liquid supply cylinder when the liquid tank is attached to and detached from the injection portion of the liquid tank. It is to provide a liquid replenishment device that can prevent the fingers from becoming dirty with liquid.

The liquid replenishment device according to the present disclosure is formed by a liquid tank having a storage chamber for storing liquid and an injection portion having an injection port communicating with the storage chamber, and a first opening and a second opening. A main body having a liquid flow path and a gas flow path formed by a third opening and a fourth opening, and the main body can be attached to and detached from the injection part, and the first opening and the first opening can be attached to and detached from the injection part. A liquid supply cylinder having a first end in which three openings are arranged, a second end in which at least the second opening is arranged among the second opening and the fourth opening, and a liquid supply cylinder of the liquid supply cylinder. A cap member that covers the first end located outside the liquid tank in a state where the main body portion is attached to the injection portion of the liquid tank is provided, and the liquid supply cylinder is provided with the cap member together with the cap member. It is characterized in that it can be attached to and detached from the injection portion.

According to the liquid supply device according to the present disclosure, the liquid supply cylinder can be attached to and detached from the injection portion together with the cap member, and when the liquid supply cylinder is attached to and detached from the injection portion of the liquid tank, the user's finger touches the liquid supply cylinder. It is possible to prevent the user's fingers from coming into contact with the end portion by the cap member, and it is possible to prevent the user's fingers from becoming dirty with the liquid.

A perspective view schematically showing a configuration example of the ink consuming device according to the first embodiment. FIG. 5 is a diagram schematically showing a configuration example of an ink replenishing device according to the first embodiment, and showing an example of a state in which an ink supply cylinder is attached to an injection portion of an ink tank. A horizontal sectional view taken along line AA in FIG. 2 of the ink supply cylinder according to the first embodiment. FIG. 6 is a diagram schematically showing a configuration example of an ink replenishing device according to the first embodiment, showing an example of a state in which the ink supply cylinder is removed from the injection portion of the ink tank. FIG. 6 is a diagram schematically showing a configuration example of an ink replenishing device according to the first embodiment, showing an example of a state in which an ink supply cylinder is attached to an injection portion of an ink tank and a cap member is removed. FIG. 6 is a diagram schematically showing a configuration example of an ink replenishing device according to the first embodiment, showing an example of a state in which an end portion of an ink supply cylinder is inserted into a tip end portion of an ink bottle. The figure which shows the state example which the cap member which concerns on 1st Embodiment is attached to the injection part of an ink tank. FIG. 5 is a diagram schematically showing a configuration example of an ink replenishing device according to a second embodiment, showing an example of a state in which the ink supply cylinder is removed from the injection portion of the ink tank. FIG. 5 is a diagram schematically showing a configuration example of an ink replenishing device according to a modified embodiment, and showing an example of a state in which an ink supply cylinder is attached to an injection portion of an ink tank. FIG. 6 is a diagram schematically showing a configuration example of an ink replenishing device according to a modified embodiment, showing an example of a state in which an ink supply cylinder is attached to an injection portion provided on an inclined surface of an ink tank. FIG. 6 is a diagram schematically showing a configuration example of an ink replenishing device according to a modified embodiment, and showing an example of a state in which the end of an ink supply cylinder is inserted into the tip of an ink bottle (No. 1). FIG. 2 is a diagram schematically showing a configuration example of an ink replenishing device according to a modified embodiment, showing an example of a state in which the end of an ink supply cylinder is inserted into the tip of an ink bottle (No. 2).

Hereinafter, a plurality of embodiments according to the liquid replenishment device of the present disclosure will be described with reference to the drawings. In a plurality of embodiments, substantially the same elements are designated by the same reference numerals, and the description thereof will be omitted.

(First Embodiment)
The ink consuming device 10 illustrated in FIG. 1 is an example of a liquid consuming device, and is configured as an inkjet printer that forms an image by consuming ink on an image forming object such as a sheet. The ink consuming device 10 includes a transport path 11 at a substantially central portion in the left-right direction thereof. In this case, the transport path 11 extends along the front-rear direction of the ink consuming device 10, and a well-known transport mechanism (not shown) transports the sheet, which is an image forming object, along the front-rear direction.

The ink consuming device 10 includes a plurality of ink tanks 110 inside the main body case 12 that constitutes the outer shell thereof. The ink tank 110 is an example of a liquid tank, and stores ink, which is an example of a liquid, inside. The ink tank 110 is made of, for example, a transparent or translucent resin material, and the remaining amount of ink inside can be visually recognized from the outside of the ink tank 110.

The ink stored in the ink tank 110 is supplied to the ink ejection head 13 provided so as to be reciprocally movable in the left-right direction on the upper portion of the transport path 11. Then, ink is ejected from the ink ejection head 13 to the image forming object on the transport path 11. As a result, an image including patterns, characters, and the like is formed on the image forming object by the ink. The ink stored in the ink tank 110 is, for example, cyan ink, magenta ink, yellow ink, black ink, or the like.

The ink consuming device 10 is configured to include an ink tank 110 that allows the user to replenish ink many times. Next, a configuration example of the ink replenishing device 100 for replenishing ink in the ink tank 110 will be described. The ink replenishment device 100 illustrated in FIGS. 2 and 4 is an example of a liquid replenishment device. The ink replenishment device 100 includes the ink tank 110 described above, and further includes an ink supply cylinder 120 and a cap member 130.

The ink tank 110 includes a storage chamber 111 for storing ink inside, and an injection unit 112 for injecting ink. The injection portion 112 has a cylindrical wall portion 112a. The wall portion 112a is an example of the first tubular wall portion, and forms an injection port 112b that communicates with the storage chamber 111. Further, a tank-side screw portion 112c is provided on the outer peripheral surface of the wall portion 112a. The tank-side screw portion 112c is an example of the first engaging portion.

The ink supply cylinder 120 is an example of a liquid supply cylinder. The main body 121 of the ink supply cylinder 120 has an ink flow path 122 and an air flow path 123. The ink flow path 122 is an example of a liquid flow path through which ink, which is an example of a liquid, flows, and is a substantially linear flow path having an outer opening 122a and an inner opening 122b at both ends thereof. The outer opening 122a is an example of the first opening, and the inner opening 122b is an example of the second opening. The air flow path 123 is an example of a gas flow path through which air flows, which is an example of gas, and is a substantially linear flow path having an outer opening 123a and an inner opening 123b at both ends thereof. The outer opening 123a is an example of the third opening, and the inner opening 123b is an example of the fourth opening. In a state where the ink supply cylinder 120 is attached to the injection portion 112 of the ink tank 110, the main body portion 121 has a substantially cylindrical shape extending in the vertical direction, and as illustrated in FIG. 3, the ink flow path 122 The horizontal cross-sectional shape of the air flow path 123 and the air flow path 123 are semicircular, respectively. Further, the ink flow path 122 and the air flow path 123 are in a state in which their respective semicircular arc side portions are directed outward.

The main body 121 of the ink supply cylinder 120 has an outer end 120A and an inner end 120B at both ends thereof. The outer end 120A is an example of the first end. In this case, the outer opening 122a of the ink flow path 122 and the outer opening 123a of the air flow path 123 are arranged at the outer end 120A. On the other hand, the inner end 120B is an example of the second end, and in this case, the inner opening 122b of the ink flow path 122 is arranged in the inner end 120B. In this case, the inner opening 123b of the air flow path is located between the outer end 120A and the inner end 120B and is arranged closer to the inner end 120B. Therefore, the ink supply cylinder 120 has a structure in which the lengths of the ink flow path 122 and the air flow path 123 are different, and in this case, the air flow path 123 is shorter than the ink flow path 122.

Further, the main body portion 121 of the ink supply cylinder 120 further has a flange portion 124. In this case, the flange portion 124 is provided between the outer end 120A and the inner end 120B. The flange portion 124 is provided so as to surround the periphery of the main body portion 121 of the ink supply cylinder 120 having the ink flow path 122 and the air flow path 123. Further, the flange portion 124 has a cylindrical wall portion 124a. This wall portion 124a is an example of the second tubular wall portion, and is the outer circumference of the wall portion 112a of the injection portion 112 in a state where the main body portion 121 of the ink supply cylinder 120 is mounted in the injection port 112b of the ink tank 110. It is provided so as to cover the surface. Further, a supply cylinder side screw portion 124b is provided on the inner peripheral surface of the wall portion 124a. The supply cylinder side screw portion 124b is an example of the second engaging portion.

In this case, the tank-side screw portion 112c and the supply cylinder-side screw portion 124b are configured as screw portions that can be screwed together. Therefore, the main body 121 of the ink supply cylinder 120 is detachably attached to the injection port 112b of the ink tank 110 by engaging with the tank-side screw portion 112c and the supply cylinder-side screw portion 124b by screwing.

Further, the flange portion 124 further has a cylindrical wall portion 124c on the opposite side of the wall portion 124a described above. The wall portion 124c forms a circular opening around the outer end 120A of the ink supply cylinder 120 into which the cap member 130 described later is inserted. Further, the opening diameter of the wall portion 124c is smaller than the opening diameter of the wall portion 124a.

Further, the main body 121 of the ink supply cylinder 120 is provided with a lead-out hole 125. In this case, the lead-out hole 125 is provided in the flange portion 124 between the main body portion 121 and the wall portion 124c, and penetrates the flange portion 124 along the axial direction of the main body portion 121. The lead-out hole 125 allows the leaked ink to leak from the outer end 120A of the main body 121 of the ink supply cylinder 120, that is, the end where the outer opening 122a and the outer opening 123a are arranged. It is guided into the ink tank 110.

The cap member 130 integrally includes a large diameter portion 131, an inner diameter small portion 132, and an outer diameter small portion 133. The large diameter portion 131 constitutes the main body portion of the cap member 130, and is the largest diameter portion of the cap member 130. The inner small diameter portion 132 is a portion having a smaller diameter than the large diameter portion 131, and is inserted into the opening formed by the wall portion 124c of the flange portion 124. The outer diameter small portion 133 is a small diameter portion provided on the side of the cap member 130 opposite to the inner diameter small portion 132. When attaching / detaching the cap member 130, the user may grip the outer diameter small portion 133 or the large diameter portion 131 as a grip portion for attaching / detaching the cap member 130, and attach / detach the cap member 130. At this time, the user can easily attach / detach the cap member 130 by having the outer peripheral surface of the large diameter portion 131, which is a larger portion of the outer diameter small portion 133 and the large diameter portion 131.

In the cap member 130, a recess 132a extending to an intermediate portion of the large diameter portion 131 is provided in the central portion of the inner diameter small portion 132. When the small inner diameter portion 132 of the cap member 130 is inserted into the opening formed by the wall portion 124c of the flange portion 124, the outer end 120A of the ink supply cylinder 120 is housed in the recess 132a of the small inner diameter portion 132. To. That is, the cap member 130 is a member capable of covering the outer end 120A located outside the ink tank 110 in a state where the main body 121 of the ink supply cylinder 120 is attached to the injection port 112b of the ink tank 110. It has become.

According to the ink replenishment device 100 configured as described above, as illustrated in FIGS. 2 and 4, the main body 121 of the ink supply cylinder 120 can be attached to and detached from the injection port 112b of the ink tank 110 together with the cap member 130. It has become.

That is, the user holds the wall portion 124a of the flange portion 124 of the ink supply cylinder 120 to which the cap member 130 is mounted, and the ink supply cylinder is engaged with the tank side screw portion 112c and the supply cylinder side screw portion 124b. By turning 120 together with the cap member 130, the ink supply cylinder 120 can be attached to the injection port 112b of the ink tank 110. At this time, the direction in which the ink supply cylinder 120 is turned is not in the vertical direction but mainly in the horizontal direction.

Further, the user holds the wall portion 124a of the flange portion 124 of the ink supply cylinder 120 to which the cap member 130 is mounted, and supplies ink so that the tank side screw portion 112c and the supply cylinder side screw portion 124b are disengaged. By turning the cylinder 120 together with the cap member 130, the ink supply cylinder 120 can be removed from the injection port 112b of the ink tank 110. At this time, the direction in which the ink supply cylinder 120 is turned is not in the vertical direction but mainly in the horizontal direction.

Further, when replenishing ink in the ink tank 110, as illustrated in FIG. 2, the user attaches the ink supply cylinder 120 together with the cap member 130 to the injection port 112b of the ink tank 110, and in FIG. As illustrated, the cap member 130 is removed from the ink supply cylinder 120. Then, as illustrated in FIG. 6, the user can use the end of the ink supply cylinder 120 located outside the ink tank 110 with the ink supply cylinder 120 attached to the injection port 112b of the ink tank 110, in this case. The outer end 120A is inserted into the tip 201 of the ink bottle 200. The tip portion 201 of the ink bottle 200 is provided with an insertion portion 201a, and the insertion portion 201a is inserted into the opening formed by the wall portion 124c of the flange portion 124.

Then, when the outer end 120A of the ink supply cylinder 120 is inserted into the tip end 201 of the ink bottle 200 in this way, the ink contained in the ink bottle 200 is placed in the ink flow path 122 as illustrated by the arrow A. Flowed out into the storage chamber 111 of the ink tank 110, while the air in the storage chamber 111 of the ink tank 110 flowed through the air flow path 123 and flowed out into the ink bottle 200 as illustrated by the arrow B. To do. By simultaneously generating the ink flow in the ink flow path 122 and the air flow in the air flow path 123, the ink bottle 200 is transferred to the storage chamber 111 of the ink tank 110 by gas-liquid exchange. Ink is replenished.

In the replenishment of ink based on such gas-liquid exchange, the liquid level of the ink in the storage chamber 111 of the ink tank 110 is the end of the air flow path 123, in this case, the inner opening 123b which is an example of the fourth opening. It will stop automatically when it reaches. That is, the ink replenishment based on the gas-liquid exchange is automatically stopped when the inner opening 123b of the air flow path 123 is blocked by the ink in the ink tank 110.

Further, as illustrated in FIG. 7, the cap member 130 is also removable from the injection port 112b of the ink tank 110. That is, in this case, the opening diameter of the injection port 112b of the ink tank 110 is the same as the opening diameter of the opening formed by the wall portion 124c of the flange portion 124. Therefore, it is possible to insert the inner diameter small portion 132 of the cap member 130 into the opening formed by the wall portion 124c of the flange portion 124, that is, the cap member 130 is a lid that closes the injection port 112b of the ink tank 110. It can also be used as a member.

According to the ink replenishment device 100 configured as described above, the ink supply cylinder 120 can be attached to and detached from the injection port 112b of the ink tank 110 together with the cap member 130. According to this configuration, when the ink supply cylinder 120 is attached to and detached from the injection port 112b of the ink tank 110, the user's finger touches the end portion of the ink supply cylinder 120, particularly the outer end 120A located outside the ink tank 110. The contact can be suppressed by the cap member 130, and it is possible to prevent the user's fingers from being soiled with ink.

Further, according to the ink replenishment device 100, the inner opening 123b of the air flow path 123 is arranged between the outer end 120A and the inner end 120B of the main body 121 of the ink supply cylinder 120. That is, the air flow path 123 is shorter than the ink flow path 122. According to this configuration, ink can be replenished to a position higher than the height of the inner opening 123b of the air flow path 123, in other words, the height of the inner opening 122b of the ink flow path 122, and the ink tank 110 is stored. More ink can be replenished in the chamber 111. The inner opening 123b of the air flow path 123 may be arranged at the inner end 120B of the main body 121 of the ink supply cylinder 120. That is, the ink supply cylinder 120 may be configured such that the ink flow path 122 and the ink flow path 122 have the same length.

Further, the main body 121 of the ink supply cylinder 120 has a flange portion 124 between the outer end 120A and the inner end 120B, and the flange portion 124 is around the main body 121 of the ink supply cylinder 120, in other words. If so, it is provided so as to surround the ink flow path 122 and the air flow path 123. According to this configuration, the user can attach / detach the ink supply cylinder 120 by holding the flange portion 124 without directly contacting the main body portion 121 of the ink supply cylinder 120, and the user's fingers can use the ink. It is possible to more surely avoid getting dirty with ink.

Further, the main body 121 of the ink supply cylinder 120 is detachably attached to the injection port 112b of the ink tank 110 by engaging with the tank side screw portion 112c and the supply cylinder side screw portion 124b by screwing. According to this configuration, the ink supply cylinder 120 can be easily attached to the injection port 112b of the ink tank 110, and the ink supply cylinder 120 can be easily removed from the injection port 112b of the ink tank 110. That is, since the ink supply cylinder 120 can be easily attached and detached by screwing the screw portion, it is possible to more reliably prevent the user's fingers from being soiled with ink.

The cap member 130 can also be attached to and detached from the injection port 112b of the ink tank 110. According to this configuration, when the user uses the gas-liquid exchange type ink bottle 200, the cap member 130 can be used as the cover member of the ink supply cylinder 120, while the so-called pumping type ink bottle is used. When used, the cap member 130 can be used as a lid member that closes the injection port 112b of the ink tank 110. That is, any of the gas-liquid exchange method and the pumping method can be supported according to the user's preference, and the usability can be improved. In the pumping method, the user inserts the tip of the ink bottle into the injection port 112b of the ink tank 110 and repeatedly crushes the main body of the ink bottle many times to charge the ink in the ink bottle to the ink tank 110. This is a method of replenishing the ink in the storage chamber 111 of the above.

Further, the main body 121 of the ink supply cylinder 120 is provided with a lead-out hole 125, and through the lead-out hole 125, the outer end 120A of the main body 121 of the ink supply cylinder 120, that is, the outer opening 122a and the air flow path. When ink leaks from the end where 123 is arranged, the leaked ink can be guided into the storage chamber 111 of the ink tank 110. According to this configuration, it is possible to prevent the leaked ink from adhering to the outer surface of the ink supply cylinder 120, particularly to the outer surface of the flange portion 124 which is a portion held by the user at the time of attachment / detachment, and the user's fingers. Can be more reliably prevented from being soiled with ink.

(Second Embodiment)
In this embodiment, the mode of engagement of the ink supply cylinder 120 with the injection port 112b of the ink tank 110 is different from the above-described embodiment. That is, as illustrated in FIG. 8, a groove 300 is provided on the outer peripheral surface of the injection port 112b of the ink tank 110. The groove portion 300 is an example of the first engaging portion. The groove portion 300 has a configuration in which a vertical groove portion 300a extending in the vertical direction and a horizontal groove portion 300b extending in the horizontal direction from the lower end portion of the vertical groove portion 300a are integrally provided.

On the other hand, a protrusion 301 is provided on the inner peripheral surface of the wall portion 124a of the flange portion 124. The protrusion 301 is an example of a second engaging portion that can be engaged with the groove 300.

When the ink supply cylinder 120 is attached to the injection port 112b of the ink tank 110, the user holds the wall portion 124a of the flange portion 124 of the ink supply cylinder 120 to which the cap member 130 is mounted, and first, the upper and lower groove portions 300a of the groove portion 300 The ink supply cylinder 120 is moved downward so that the protrusion 301 moves along the above. Then, the user rotates the ink supply cylinder 120 in the horizontal direction so that the protrusion 301 moves along the horizontal groove 300b of the groove 300. As a result, the ink supply cylinder 120 can be attached to the injection port 112b of the ink tank 110.

When removing the ink supply cylinder 120 from the injection port 112b of the ink tank 110, the user first holds the wall portion 124a of the flange portion 124 of the ink supply cylinder 120 to which the cap member 130 is mounted, and first, the groove portion 300 is horizontal. The ink supply cylinder 120 is rotated in the horizontal direction so that the protrusion 301 moves along the groove 300b. Then, the user moves the ink supply cylinder 120 upward so that the protrusion 301 moves along the upper and lower groove portions 300a of the groove portion 300. As a result, the ink supply cylinder 120 can be removed from the injection port 112b of the ink tank 110.

Also in the second embodiment configured as described above, the ink supply cylinder 120 can be attached to and detached from the injection port 112b of the ink tank 110 together with the cap member 130. Therefore, when the ink supply cylinder 120 is attached to and detached from the injection port 112b of the ink tank 110, the user's finger comes into contact with the end portion of the ink supply cylinder 120, particularly the outer end 120A located outside the ink tank 110. This can be suppressed by the cap member 130, and it is possible to prevent the user's fingers from being soiled with ink.

Further, the main body 121 of the ink supply cylinder 120 is detachably attached to the injection port 112b of the ink tank 110 by engaging the groove 300 and the protrusion 301. According to this configuration, the ink supply cylinder 120 can be easily attached to the injection port 112b of the ink tank 110, and the ink supply cylinder 120 can be easily removed from the injection port 112b of the ink tank 110. That is, since the ink supply cylinder 120 can be easily attached and detached by engaging the groove portion and the protrusion portion, it is possible to more reliably prevent the user's fingers from being soiled with ink.

The groove portion 300 may be configured to include an inclined groove portion that inclines downward toward the horizontal groove portion 300b instead of the upper and lower groove portions 300a. In this case, the inclined groove portion may be a groove portion that is inclined in a straight line, or may be a groove portion that is inclined in a curved shape. Further, a protrusion may be provided on the outer peripheral surface of the wall portion 112a of the ink tank 110, and a groove portion may be provided on the inner peripheral surface of the wall portion 124a of the flange portion 124 of the ink supply cylinder 120.

(Other embodiments)
The present disclosure is not limited to the plurality of embodiments described above, and various modifications and extensions can be made without departing from the gist thereof. For example, the plurality of embodiments described above may be appropriately selected and combined. Further, at least the second opening of the second opening and the fourth opening may be arranged at the second end of the ink supply cylinder 120, but even if both the second opening and the fourth opening are arranged. Good.

Further, as illustrated in FIG. 9, the ink supply cylinder 120 may be configured to further include a cylindrical wall portion 124d on the outside of the wall portion 124c of the flange portion 124. The wall portion 124d can be configured by extending the wall portion 124a toward the wall portion 124c. According to this configuration, it is possible to secure a large area of the portion held by the user when attaching / detaching the ink supply cylinder 120 to / from the injection port 112b of the ink tank 110, and it is possible to make it easier to attach / detach the ink supply cylinder 120. The diameter of the wall portion 124d may be the same as the diameter of the wall portion 124a, or may be different from the diameter of the wall portion 124a.

Further, as illustrated in FIG. 10, the ink supply cylinder 120 can be attached to and detached from the injection portion 112 provided on the inclined surface intersecting the virtual vertical direction in the ink tank 110 together with the cap member 130. is there. In this case, the wall surface in front of the ink tank 110 may extend along a virtual vertical direction. According to this configuration, since the injection unit 112 is provided on an inclined surface that is inclined toward the user, the user can easily attach / detach the ink supply cylinder 120 to / from the injection unit 112 of the ink tank 110 together with the cap member 130, and by extension, the ink supply cylinder 120. , It is easy to replenish ink in the storage chamber 111 of the ink tank 110.

Further, as illustrated in FIG. 11, the flange portion 124 may be configured to include the rib 126 inside the wall portion 124a. The rib 126 is provided at least outside the lead-out hole 125. According to this configuration, the rib 126 can prevent the ink flowing out from the lead-out hole 125 from going to the outside, that is, the side opposite to the main body 121 of the ink supply cylinder 120, and the ink flowing out from the lead-out hole 125. Can be efficiently guided into the storage chamber 111 of the ink tank 110.

Further, as illustrated in FIG. 12, the flange portion 124 may be configured such that the lead-out hole 125 is arranged so as to be in contact with the main body portion 121 of the ink supply cylinder 120. According to this configuration, the ink flowing out from the lead-out hole 125 flows along the outer peripheral surface of the main body 121 of the ink supply cylinder 120, and the ink flowing out from the lead-out hole 125 flows through the storage chamber 111 of the ink tank 110. It can be efficiently guided inside. In this case, the flange portion 124 may be configured to include the rib 126 on the inside of the wall portion 124a and on the outside of the lead-out hole 125. According to this configuration, the ink flowing out from the lead-out hole 125 can be guided to the main body 121 side of the ink supply cylinder 120 by the rib 126, and the ink can be easily transmitted to the outer peripheral surface of the main body 121 of the ink supply cylinder 120. Can be done. Further, the flange portion 124 may be configured to include an inclined surface portion 127 that is inclined downward toward the lead-out portion 125 at a portion that is outside the lead-out portion 125 inside the wall portion 124c. According to this configuration, the ink leaked from the outer end 120A of the ink supply cylinder 120 can be easily flowed to the lead-out portion 125 side, and the ink can be easily flowed into the storage chamber 111 of the ink tank 110 through the lead-out hole 125. Derivation can be further promoted.

100: Ink replenishment device (liquid replenishment device), 110: Ink tank (liquid tank), 111: Storage chamber, 112: Injection part, 112a: Wall part (first tubular wall part), 112b: Injection port, 112c: Tank side screw part (first engaging part, screw part), 120: ink supply cylinder (liquid supply cylinder), 120A: outer end (first end), 120B: inner end (second end), 121: main body part , 122: Ink flow path (liquid flow path), 122a: Outer opening (first opening), 122b: Inner opening (second opening), 123: Air flow path (gas flow path), 123a: Outer opening (third opening) Opening), 123b: Inner opening (4th opening), 124: Flange part, 124a: Wall part (2nd tubular wall part), 124b: Supply cylinder side screw part (2nd engaging part, screw part), 125 : Lead-out hole, 130: Cap member, 300: Groove (first engaging part), 301: Protruding part (second engaging part)

Claims (9)

A liquid tank having a storage chamber for storing liquid and an injection unit having an injection port communicating with the storage chamber.
A main body having a liquid flow path formed by the first opening and the second opening and a gas flow path formed by the third opening and the fourth opening is provided, and the main body can be attached to and detached from the injection part. The first end in which the first opening and the third opening are arranged, and the second end of the second opening and the fourth opening in which at least the second opening is arranged. With the liquid supply cylinder to have
A cap member that covers the first end located outside the liquid tank in a state where the main body portion of the liquid supply cylinder is attached to the injection portion of the liquid tank.
With
The liquid supply cylinder is a liquid supply device that can be attached to and detached from the injection portion together with the cap member. The liquid replenishing device according to claim 1, wherein the fourth opening is arranged between the first end and the second end. The main body portion has a flange portion between the first end and the second end.
The liquid replenishing device according to claim 1 or 2, wherein the flange portion is provided so as to surround the liquid flow path and the gas flow path. The injection portion of the liquid tank has a first tubular wall portion forming the injection port.
The first tubular wall portion has a first engaging portion on its outer peripheral surface, and has a first engaging portion.
The flange portion of the liquid supply cylinder has a second tubular wall portion that covers the outer peripheral surface of the first tubular wall portion.
The second tubular wall portion has a second engaging portion that engages with the first engaging portion on its inner peripheral surface.
3. The main body of the liquid supply cylinder is detachably attached to the injection portion of the liquid tank by engaging the first engaging portion and the second engaging portion. The liquid replenishment device described. The liquid replenishing device according to claim 4, wherein the first engaging portion and the second engaging portion are formed of screw portions that can be screwed into each other. The first engaging portion is composed of one of a protruding portion and a groove portion.
The liquid replenishing device according to claim 4, wherein the second engaging portion is formed by one of a protrusion and a groove. The liquid replenishing device according to any one of claims 1 to 6, wherein the cap member is also removable from the injection portion. The liquid replenishing device according to any one of claims 1 to 7, wherein the main body portion includes a first opening and a lead-out hole for guiding a liquid leaking from the third opening into the liquid tank. .. A liquid tank having a storage chamber for storing liquid and an injection unit having an injection port communicating with the storage chamber.
A main body having a liquid flow path formed by the first opening and the second opening and a gas flow path formed by the third opening and the fourth opening is provided, and the main body can be attached to and detached from the injection part. The first end in which the first opening and the third opening are arranged, and the second end of the second opening and the fourth opening in which at least the second opening is arranged. With the liquid supply cylinder to have
A cap member that covers the first end located outside the liquid tank in a state where the main body portion of the liquid supply cylinder is attached to the injection portion of the liquid tank.
With
The injection portion is provided on an inclined surface of the liquid tank, and is provided on an inclined surface.
The liquid supply cylinder is a liquid replenishment device that can be attached to and detached from the injection portion provided on the inclined surface together with the cap member.

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