JP7013779B2 - Liquid sprayer - Google Patents

Description

The present invention relates to a liquid injection device.

Conventionally, as a liquid injection device for a printer, a so-called off-carriage system in which an ink tank capable of continuously supplying ink is provided outside the carriage has been used (see, for example, Patent Document 1). In such a configuration, since the ink tank is generally provided at a position lower than the head, the head does not get dirty even if the ink drips when the ink is injected from the ink injection port.

On the other hand, in the so-called on-carriage type liquid injection device in which an ink tank capable of continuously supplying ink is mounted on the carriage, the ink injection port is mounted on the carriage due to the structure that the ink tank is mounted on the carriage. It is conceivable that the configuration is located above the system.

JP-A-2015-199264

However, when the ink injection port is arranged above the liquid injection head or the maintenance system in the on-carriage type liquid injection device, if the ink drips during ink injection, the liquid injection head or maintenance below the ink injection port It may adhere to each element such as a system and cause a decrease in reliability of each element such as a printing defect.

Therefore, the present invention is a liquid injection device in a so-called on-carriage type recording device in which an ink tank is mounted on a carriage, and each element such as a liquid injection head and a maintenance system when ink drips inside the carriage during ink injection. It is an object of the present invention to provide a liquid injection device capable of suppressing a decrease in reliability of the ink.

The liquid injection device according to one aspect of the present invention is
A liquid injection head that injects liquid from a nozzle onto the medium,
A liquid storage member that stores the liquid supplied to the liquid injection head,
It is equipped with a liquid injection head and a liquid accommodating member, and is equipped with a carriage that can move on a movement path.
The liquid accommodating member has a liquid injection port for injecting a liquid, which is located above the liquid injection head.
The liquid injection port is provided at a position that does not overlap with the nozzle forming surface, which is a region where the nozzle is formed, in a plan view from above.

According to this aspect, even if the liquid drips from the liquid injection port when the liquid is injected, it is difficult for the liquid to reach the nozzle forming surface, so that it is possible to suppress a decrease in reliability such as printing defects.

The liquid injection device of the above embodiment further includes a cap capable of forming a closed space in which the nozzle opens at a position facing the nozzle forming surface, and the liquid injection port is viewed from above when the carriage is on the movement path. It may be provided at a position where it does not overlap with the cap. According to this aspect, even if the liquid drips from the liquid injection port at the time of injecting the liquid, it is difficult for the liquid to reach the cap, so that the dirt on the liquid injection head due to the dirt on the cap can be suppressed.

The liquid injection device of the above aspect further includes a wiping portion capable of wiping the nozzle forming surface, and the liquid injection port is provided at a position where the carriage does not overlap with the wiping member in a plan view from above when the carriage is on the movement path. You may be. According to this aspect, even if the liquid drips from the liquid injection port when the liquid is injected, it is difficult for the liquid to reach the wiping member, so that the dirt on the liquid injection head due to the dirt on the wiping member can be suppressed.

In the liquid injection device of the above aspect, the carriage has a visual recognition portion that makes the liquid accommodating member visible, and the liquid injection port may be provided on one end side of the liquid accommodating member in the moving direction of the carriage. According to this aspect, since the liquid can be injected while looking at the liquid level in the liquid storage member through the visual recognition portion, it is possible to prevent the liquid from accidentally overflowing from the liquid injection port.

The liquid injection device of the above embodiment further includes a lid member that opens and closes the liquid injection port, the carriage has a visual recognition portion that makes the liquid storage member visible, and the lid member moves in a direction away from the visual recognition portion. It may be the one that opens the liquid injection port. According to this aspect, the lid member does not hide the visual recognition portion, and the liquid can be injected while looking at the liquid level in the liquid storage member through the visual recognition portion, and it is possible to prevent the liquid from accidentally overflowing from the liquid injection port.

Even if the liquid injection device of the above aspect further includes a lid member that opens and closes the liquid injection port, and a regulation unit that regulates the opening and closing operation of the lid member when the liquid injection head and the cap are at opposite positions. good. According to this aspect, the liquid injection port is inadvertently opened, and it is possible to prevent the liquid from spilling due to this.

The liquid injection device of the above embodiment further includes a lid member that opens and closes the liquid injection port, and a holding portion that holds the lid member at a predetermined holding position in a state where the liquid injection port is open, and is in the holding position. The lid member may not overlap the nozzle forming surface in a plan view from above. According to this aspect, even when the liquid drips from the lid member, it is difficult for the liquid to reach the nozzle forming surface, so that it is possible to suppress a decrease in reliability such as a printing defect.

It is a perspective view which shows the printer (recording apparatus) which is an example of application object of this invention. It is a perspective view which shows the printer in the state which the paper support is opened from the state shown in FIG. It is a perspective view which shows the printer in the state which opened the top cover from the state shown in FIG. It is a perspective view which shows a part of the printer in the state which the refill container is attached to the inlet of an ink tank. It is an enlarged perspective view which shows the structural example of a liquid injection device and its surroundings by cutting out a part of a housing. It is a top view which shows the configuration example inside the printer. It is a top view of the printer with the carriage in the home position. FIG. 7 is an enlarged front view showing the carriage and its periphery in FIG. 7. It is a top view of the printer with the carriage in the liquid injection position. 9 is an enlarged front view showing the carriage and its periphery in FIG. 9. It is a figure which shows an example of the carriage of the liquid injection apparatus which provided the scale in the visual | visual part. It is a figure which shows the other example of the carriage of the liquid injection apparatus which provided the scale in the visual | visual part. It is a figure which shows still another example of the carriage of the liquid injection apparatus which provided the scale in the visual | visual part. It is a figure which shows an example of the ink tank (liquid accommodating member) which arranged the liquid injection port at the intersection where the upper surface and the front surface intersect.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings. In each figure, those with the same reference numerals have the same or similar configurations.

<< Outline configuration of recording device >>
First, a schematic configuration example of the recording device to which the present invention is applied will be described. Hereinafter, an inkjet printer (hereinafter, simply referred to as a printer) will be described as an example of a recording device (see FIGS. 1 to 5).

In the XYZ coordinate system shown in each figure, the X direction is the moving direction of the liquid injection head 10 (that is, the moving direction of the carriage 30) and the width direction of the printer 100. Further, the Y direction indicates the depth direction of the printer 100, and the Z direction indicates the height direction of the printer 100. In each drawing, the + Y direction is the front side or the front side of the printer 100, and the −Y direction is the back side or the rear side of the printer 100. Further, when viewed from the front side of the printer 100, the left side is the + X direction and the right side is the −X direction. Further, the + Z direction is above the printer 100 (including the upper part, upper surface, etc.), and the −Z direction is below the printer 100 (including the lower part, lower surface, etc.).

The printer 100 rotates to the back side of a liquid injection head 10 that injects a liquid such as ink (hereinafter, simply referred to as ink) from a nozzle 11, a housing 2 that includes the liquid injection head 10 inside, and a housing 2. The appearance is composed of a paper support 3 that opens and closes with a shaft, and an upper cover 4 that opens and closes the upper part of the housing 2. When the paper support 3 is opened, the set opening 5 provided at the upper part of the housing 2 appears. A medium, for example, printing paper, is inserted into the set opening 5. The paper support 3 is a cover that opens and closes an area including the set opening 5 in the upper part of the housing 2. As shown in FIG. 2, the paper support 3 takes an inclined posture in an open state and holds the paper set in the set opening 5. It is configured to be supported by the support surface 3a.

The paper support 3 includes an auxiliary paper support 6 that can be accommodated inside and can be pulled out from the inside. By pulling out the auxiliary paper support 6, it is possible to stably support a longer paper (see FIG. 2).

The paper set in the set port 5 is fed in the + Y direction by the medium transfer device (not shown). Then, recording is performed by the liquid injection head 10 inside the housing 2, and the recorded paper is discharged from the discharging unit 8 provided on the front surface of the housing 2.

When the upper cover 4 is opened, the inside of the housing 2 is exposed (see FIG. 3). Inside the housing 2, a carriage 30 provided with a liquid injection head 10 for ejecting ink onto paper for recording is provided. In the carriage 30, the liquid injection head 10 is provided at the bottom, that is, on the −Z direction side, and is not visible in FIG. The carriage 30 can be moved in the width direction (X direction) intersecting the medium transport direction (+ Y direction) on the movement path T30 of the carriage 30 by a transport unit including a belt movement mechanism (indicated by reference numeral 12 in FIG. 3). It is configured in. When the upper cover 4 is opened, it is preferable that at least a part of the liquid injection port 32 of the carriage 30 and the following lid member 33 can be seen.

Further, the carriage 30 is provided with an ink tank (liquid accommodating member) 20 for accommodating the ink (liquid) supplied to the liquid injection head 10. In the present embodiment, the ink tank 20 is for one color (black), but a plurality of ink tanks corresponding to a plurality of colors can be mounted on the carriage 30.

In the present embodiment, the ink tank 20 includes a liquid injection port 32 capable of injecting ink from the replenishment container 14 (see FIG. 4). The liquid injection port 32 is arranged above the liquid injection head 10 and is normally closed by a cap 21 (see FIGS. 3 and 5). The ink tank 20 can be replenished with ink by attaching the replenishment container 14 to the liquid injection port 32 with the cap 21 removed and the carriage 30 located at the liquid injection position LFP (see FIG. 4). ..

Further, in the present embodiment, an operation panel 7 for receiving an operation input in the printer 100 is provided on the front surface of the housing 2 (see FIG. 1 and the like). The operation panel 7 is provided above the discharge unit 8. The discharge unit 8 is provided with a paper discharge tray 9 configured to be able to be pulled out.

Although detailed description is omitted, in the printer 100 of the present embodiment, the remaining amount confirmation unit 13a of the ink tank 20 and the remaining amount of the ink tank 20 are further formed of a material having transparency so that the remaining amount of liquid inside can be visually recognized. A second visual recognition unit 17 that can visually recognize the remaining amount confirmation unit 13a via the first visual recognition unit 16 that can visually recognize the amount confirmation unit 13a and the first visual recognition unit 16 is provided (see FIG. 1 and the like). In the remaining amount checking unit 13a, the liquid level L of the ink in the ink tank 20 can be visually recognized (see FIG. 5).

Further, reference numeral 18a in FIG. 2 is a surface on the front side of the device where an operation panel 7 or the like is provided, reference numeral 18b is a surface on which a second visual recognition unit 17 located at a position deeper than the surface 18a is arranged, and reference numeral 19 is a second. A recess for positioning the viewing unit 17 rearward offset from the surface 18a is shown. Further, reference numeral 22 indicates a notch portion configured so that the recess 19 is not hidden by the closed upper cover 4 (see FIG. 3 and the like).

Subsequently, a preferred embodiment of the present invention will be described. Hereinafter, the liquid injection device 1 of the printer 100 to which the present invention is applied will be described with reference to the drawings (see FIGS. 6 to 10).

<< Configuration of liquid injection device >>
[First Embodiment]
The liquid injection device 1 in the printer 100 of the present embodiment includes a liquid injection head 10, an ink tank 20, a carriage 30, and the like. Further, the carriage 30 is provided with a liquid injection port 32 and a lid member 33. Further, the printer 100 may include a regulation unit 23, a cap 60, a wiping member 80, and the like.

The liquid injection port 32 is arranged above the liquid injection head 10 (see FIG. 5 and the like). The liquid injection port 32 of the present embodiment is arranged at a position that does not overlap with the nozzle forming surface 11R in the configuration when viewed from above in a plan view (the configuration viewed from above, which is the same as the configuration shown in the plan view). (See Fig. 6). The nozzle forming surface 11R refers to a region in which the nozzle 11 is formed, which is represented by a rectangle in FIG. 6 in the present embodiment, for example. In other words, the liquid injection port 32 of the present embodiment is arranged in a region other than the region including the locus when the nozzle forming surface 11R is moved vertically upward so as not to be directly above the nozzle forming surface 11R. There is. Therefore, even if the ink drips from the liquid injection port 32 during ink injection, the ink is relatively difficult to reach the nozzle forming surface 11R, and the ink adheres to the nozzle forming surface 11R below the liquid injection port 32. Is suppressed.

The cap 60 is a member that suppresses clogging of the nozzle 11 due to drying of the liquid injection head 10. The cap 60 of the present embodiment is arranged at a position where the carriage 30 comes into contact with the liquid injection head 10 when the carriage 30 is in a predetermined position. In the present specification, the initial position of the carriage 30 in which the liquid injection head 10 and the cap 60 face each other is referred to as a home position HP (see FIG. 6). The cap 60 forms a closed space in which the nozzle 11 opens with respect to the liquid injection head 10 of the carriage 30 at the home position HP.

With respect to the cap 60 as described above, the liquid injection port 32 of the present embodiment is arranged at a position where the carriage 30 does not overlap with the cap 60 in a plan view from above regardless of the position on the movement path T30. (See Fig. 6). Therefore, even if the ink drips from the liquid injection port 32 at the time of ink injection or the like, it is difficult to reach the cap 60. Therefore, according to the liquid injection device 1 of the present embodiment, it is possible to suppress the contamination of the liquid injection head 10 due to the contamination of the cap 60.

Further, the liquid injection port 32 is provided on one end side of the ink tank 20 in the moving direction (X direction) of the carriage 30, for example, on the −X side of the center of the carriage 30 (see FIG. 6). When the user replenishes ink while supporting the replenishment container 14 with one hand, in such an embodiment, the liquid level L of the ink in the ink tank 20 is removed from the visual recognition unit (first visual recognition unit 16 or second visual recognition unit 17). It is easy to replenish the ink while checking, and it is possible to prevent the situation where the ink is accidentally overflowed from the liquid injection port 32.

The wiping member 80 is a member that is arranged at a position where the liquid injection head 10 comes into contact with the liquid injection head 10 and wipes the liquid injection head 10 (see FIG. 6). With respect to the wiping member 80, it is preferable that the liquid injection port 32 is arranged at a position where the carriage 30 does not overlap with the wiping member 80 in a plan view from above regardless of the position on the movement path T30. For example, in the present embodiment, the liquid injection port 32 is arranged at a position in front of the wiping member 80 (in the + Y direction) regardless of the position of the carriage 30 on the movement path T30 (FIG. FIG. 6). Therefore, even if the ink drips from the liquid injection port 32 at the time of ink injection, it is difficult to reach the wiping member 80. Therefore, according to the liquid injection device 1 of the present embodiment, it is possible to suppress the contamination of the liquid injection head 10 due to the contamination of the wiping member 80.

The lid member 33 is a member that opens and closes the liquid injection port 32. The lid member 33 of the present embodiment is pin-coupled at the hinge portion 33a on the upper surface of the carriage 30 and opens and closes around an axis parallel to the X direction. Since the lid member 33 opens the liquid injection port 32 by moving in a direction away from the visibility unit (first visibility unit 16 and second visibility portion 17), the ink in the ink tank 20 is charged when the ink is injected. There is no hindrance to visually recognizing the liquid level L. A part of the lid member 33 may be made of an elastic member, or all of the lid member 33 may be made of an elastic member.

In the liquid injection device 1 of the present embodiment, the liquid injection position LFP of the carriage 30 and the home position HP are shifted and set to different positions. Generally, when a downward pressing force acts on the cap 60 while the liquid injection head 10 and the cap 60 face each other, there is a risk that ink and air bubbles may flow back into the nozzle 11 and the cap may be damaged. In the form, by shifting the liquid injection position LFP from the home position HP in this way, even if the user pushes the replenishment container 14 downward during ink injection (see FIG. 4), a pressing force acts. , The ink and air bubbles are prevented from flowing back and the cap is not damaged due to the influence.

A part of the housing 2 of the printer 100 is configured to function as a regulating unit 23 that regulates the opening and closing of the lid member 33 at a predetermined position (FIGS. 7 to 10). In the case of the present embodiment, the regulating unit 23 hinders the opening operation of the lid member 33 when the carriage 30 is located at the home position (position where the liquid injection head 10 and the cap 60 face each other) HP (FIGS. 7 and 8). (See) and when the carriage 30 is in the liquid injectable position LFP, it does not interfere with the opening operation of the lid member 33 (see FIGS. 9 and 10). According to the regulation unit 23, it is possible to prevent a situation in which the liquid injection port 32 is inadvertently opened and the liquid spills at the home position HP or the like.

The printer 100 is provided with a holding portion 38 that holds the lid member 33 at a predetermined holding position when the liquid injection port 32 is open. Although not shown in detail, the holding portion 38 is composed of, for example, an edge portion of a housing 2 at a position where a part of the lid member 33 is locked (see FIG. 9). The lid member 33 at the holding position forms a nozzle in a plan view from above so that the ink does not easily reach the liquid injection head 10 (nozzle forming surface 11R) even when the ink drips along the lid member 33. It is configured at a position separated from the surface 11R so as not to overlap with the surface 11R (see FIG. 6).

As described above, according to the liquid injection device 1 of the present embodiment, even if the ink drips from the liquid injection port 32 at the time of liquid injection, the ink does not easily reach the nozzle forming surface 11R. , It is possible to suppress deterioration of reliability such as printing defects.

It should be noted that the embodiments described above are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Each element included in the embodiment and its arrangement, material, condition, shape, size, and the like are not limited to those exemplified, and can be appropriately changed. Further, it is possible to partially replace or combine the configurations shown in different embodiments.

[Second Embodiment]
Even if the visual recognition unit (first visual recognition unit 16 and the second visual recognition unit 17) described in the above embodiment and the remaining amount confirmation unit 13a of the ink tank 20 are provided with a scale that makes it easy to grasp the amount of the liquid level L of the ink. good. According to this, it is possible to prevent the ink from accidentally overflowing from the liquid injection port 32. For example, when the remaining amount confirmation unit 13a is provided with a linear scale 91 indicating the high level and the low level of the liquid amount (see FIGS. 8 and 10). Instead of or in addition to this, the first visual recognition unit 16 may be provided with a scale 92 having a triangular shape, a wedge shape, an arrow shape, or the like according to the height of each level (see FIG. 11). Further, another scale 93 having a different length can be added to the linear scale 91 to more accurately grasp the remaining amount (see FIG. 12). Further, the structure is such that the remaining amount checking portion 13a is divided into two by the beam portion 30B formed in the first visual recognition portion 16 of the carriage 30, and the beam portion 30B extending so as to cross the remaining amount checking portion 13a is about half of the liquid amount. It can also be configured so that the degree can be understood (see FIG. 13).

[Third Embodiment]
The lid member 33 may be configured to be temporarily fixed at the holding position. In such a case, it is possible to prevent the lid member 33 from getting in the way when it tries to return to the original position at the time of ink injection. In addition, it is possible to prevent the ink from dripping accidentally when the ink is injected.

[Fourth Embodiment]
The carriage 30 may be configured to be capable of mounting ink tanks (liquid accommodating members) 20 for a plurality of colors. In this case, it is preferable that each liquid injection port 32 does not overlap with the liquid injection head 10 in a plan view from above. Further, it is desirable that each liquid injection port 32 does not overlap with the cap 60 and the wiping member 80 in a plan view from above when the carriage 30 is on the movement path T30.

[Fifth Embodiment]
In the printer 100 including the carriage 30, the liquid injection head 10, the ink tank (liquid accommodating member) 20, and the housing accommodating the cap 60, the carriage 30 is in the home position (the position where the liquid injection head 10 and the cap 60 face each other) HP. The second visual recognition unit 17 may be provided so that the first visual recognition unit 16 of the carriage 30 can be seen when the carriage 30 is in the liquid injection position LFP. In such a case, the liquid level can be seen when necessary, so it is easy to determine when to replenish.

[Sixth Embodiment]
The liquid injection port 32 may be arranged at the intersection where the upper surface and the front surface of the ink tank (liquid accommodating member) 20 intersect (see FIG. 14). In such a case, when the ink drips from the liquid injection port 32, the ink flowing down the front surface can be visually recognized through the visual recognition unit (first visual recognition unit 16 or second visual recognition unit 17). As a result, ink dripping can be recognized at an early stage and can be dealt with.

[7th Embodiment]
A receiving member (not shown) for receiving the liquid dropped from the moving carriage 30 may be provided above the medium conveying device (not shown) for transporting the medium (for example, printing paper). In this case, the liquid discharge port for discharging the ink dripping in the carriage 30 to the outside may be arranged at a position vertically above the receiving member when the carriage 30 is on the movement path T30. In such a case, when the ink drips from the liquid discharge port provided in the carriage 30, it is possible to prevent the ink from dropping directly onto the medium.

The present invention is suitable for application to a liquid injection device of a recording device provided with a recording means for recording on a medium.

The liquid ejected by the liquid injection head 10 is not limited to ink, and may be, for example, a liquid material in which particles of a functional material are dispersed or mixed in the liquid. For example, the liquid injection head 10 is configured to inject a liquid material in which a material such as an electrode material or a coloring material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, a surface emitting display, or the like is dispersed or dissolved. You may do it.

1 ... Liquid injection device, 10 ... Liquid injection head, 11 ... Nozzle, 11R ... Nozzle forming surface, 16 ... First visual recognition unit, 17 ... Second visual recognition unit, 20 ... Ink tank (liquid accommodating member), 23 ... Case ( Regulatory part), 30 ... Carriage, 32 ... Liquid injection port, 33 ... Lid member, 38 ... Holding part, 60 ... Cap, 70 ... Conveying member, 80 ... Wiping member, 100 ... Printer (recording device),
HP ... (carriage) home position, LFP ... (carriage) liquid injection position, T30 ... carriage movement path, T32 ... liquid injection port movement trajectory

Claims (6)

A liquid injection head that injects liquid from a nozzle onto the medium,
A liquid accommodating member for accommodating the liquid supplied to the liquid injection head,
A carriage on which the liquid injection head and the liquid accommodating member are mounted and can move on a movement path,
The nozzle opens at a position facing the nozzle forming surface, which is a region where the nozzle is formed.
With a cap that can form a closed space ,
The liquid accommodating member has a liquid injection port for the user to inject the liquid, which is arranged above the liquid injection head.
The liquid injection port is provided at a position that does not overlap the nozzle forming surface in a plan view from above, and when the carriage is on the movement path, it overlaps with the cap in a plan view from above.
A liquid injection device characterized in that it is installed at a position where it does not become . A lid member that opens and closes the liquid injection port, and
The liquid injection device according to claim 1 , further comprising a regulating unit that regulates an opening / closing operation of the lid member when the liquid injection head and the cap are at positions facing each other. A liquid injection head that injects liquid from a nozzle onto the medium,
A liquid accommodating member for accommodating the liquid supplied to the liquid injection head,
A carry that is equipped with the liquid injection head and the liquid accommodating member and can move on a movement path.
Ji and
A wiping member capable of wiping the nozzle forming surface, which is a region where the nozzle is formed, is provided.
The liquid accommodating member is arranged above the liquid injection head, and the user can use the liquid.
Has a liquid inlet for injecting the body,
The liquid injection port is provided at a position that does not overlap with the nozzle forming surface in a plan view from above.
The liquid injection device is characterized in that , when the carriage is on the movement path, it is provided at a position where it does not overlap with the wiping member in a plan view from above. A liquid injection head that injects liquid from a nozzle onto the medium,
A liquid accommodating member for accommodating the liquid supplied to the liquid injection head,
A carry that is equipped with the liquid injection head and the liquid accommodating member and can move on a movement path.
With,
The liquid accommodating member injects the liquid arranged above the liquid injection head.
Has a liquid inlet for
The carriage has a visual recognition portion that makes the liquid accommodating member visible.
The liquid injection port has a nozzle shape, which is a region where the nozzle is formed in a plan view from above.
A liquid injection device provided at a position not overlapping with a surface, and provided on one end side of the liquid accommodating member in the moving direction of the carriage. A liquid injection head that injects liquid from a nozzle onto the medium,
It has a liquid injection port for injecting the liquid, which is arranged above the liquid injection head.
Then, the liquid accommodating member for accommodating the liquid supplied to the liquid injection head, and
A carry that is equipped with the liquid injection head and the liquid accommodating member and can move on a movement path.
Ji and
With a lid member that opens and closes the liquid injection port ,
The liquid injection port has a nozzle shape, which is a region where the nozzle is formed in a plan view from above.
It is installed at a position that does not overlap with the surface
The carriage has a visual recognition portion that makes the liquid accommodating member visible.
The lid member is a liquid injection device characterized in that the liquid injection port is opened by moving in a direction away from the visual recognition portion. A liquid injection head that injects liquid from a nozzle onto the medium,
It has a liquid injection port for injecting the liquid, which is arranged above the liquid injection head.
Then, the liquid accommodating member for accommodating the liquid supplied to the liquid injection head, and
A carry that is equipped with the liquid injection head and the liquid accommodating member and can move on a movement path.
Ji and
A lid member that opens and closes the liquid injection port, and
A holding portion for holding the lid member at a predetermined holding position in a state where the liquid injection port is open is provided .
The liquid injection port has a nozzle shape, which is a region where the nozzle is formed in a plan view from above.
It is installed at a position that does not overlap with the surface
A liquid injection device characterized in that the lid member at the holding position does not overlap the nozzle forming surface in a plan view from above.

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