Patent Grant
11007785
The present application is based on, and claims priority from JP Application Serial Number 2018-173330, filed Sep. 18, 2018, the disclosure of which is hereby incorporated by reference herein in its entirety.
The present disclosure relates to a waste liquid container and an attachment.
For example, an existing waste liquid container disclosed in JP-A-2016-10900 has been known as an example of waste liquid containers capable of being mounted on liquid ejecting apparatuses. A to-be-inserted portion is provided on a front wall of such a waste liquid container, and the to-be-inserted portion of the waste liquid container is inserted into a discharge portion provided on a liquid ejecting apparatus in a state in which the waste liquid container is mounted on the liquid ejecting apparatus. Waste liquid used in the liquid ejecting apparatus is discharged into the waste liquid container after passing through the discharge portion.
A to-be-locked portion is provided on a bottom wall of the waste liquid container, and a separation movement restricting portion provided on the liquid ejecting apparatus makes contact with the to-be-locked portion of the waste liquid container in the state in which the waste liquid container is mounted on the liquid ejecting apparatus. As a result, a positioning state of the waste liquid container mounted on the liquid ejecting apparatus becomes stable.
In the waste liquid container disclosed in JP-A-2016-10900, the to-be-locked portion is however located at a position under a center of an opening of the to-be-inserted portion in the vertical direction. The waste liquid leaked out from the to-be-inserted portion therefore adheres to the to-be-locked portion while flowing down the front wall of the waste liquid container and is transferred onto the liquid ejecting apparatus in some cases. In this case, there is a risk that the waste liquid transferred onto the liquid ejecting apparatus is transferred also onto a waste liquid container newly mounted on the liquid ejecting apparatus.
According to an aspect of the present disclosure, a waste liquid container that is mounted on a mounting portion in a detachable manner with movement in a mounting direction intersecting with a gravity direction having a discharge portion for discharging waste liquid and a restricting portion provided under the discharge portion includes a waste liquid introduction portion being coupled to the discharge portion when the waste liquid container is mounted on the mounting portion, an accommodation portion accommodating the waste liquid discharged from the discharge portion, and a restricted portion having a contact portion configured to make contact with the restricting portion and restricting movement of the waste liquid container in a detachment direction opposite to the mounting direction by contact between the contact portion and the restricting portion in a state in which the waste liquid container is mounted on the mounting portion, in which the contact portion is arranged at a position that does not overlap with a center of an opening of the waste liquid introduction portion in a vertical direction when seen from a side on which the waste liquid introduction portion is opened.
Hereinafter, one embodiment embodying a waste liquid container and a liquid ejecting apparatus will be described with reference to the drawings.
As illustrated in
The recording unit 11 is an ink jet printer and includes a recording unit case 14 configuring a housing of the liquid ejecting apparatus. A guide member 15 extending in a main-scanning direction and a carriage 16 supported on the guide member 15 in a state of being movable in the main-scanning direction are provided in the recording unit case 14. The carriage 16 reciprocates in the main-scanning direction with the driving of a carriage motor. A recording head 17 is provided on the carriage 16. The recording head 17 has nozzles for ejecting ink as an example of liquid. Recording is performed on paper P by ejecting ink from the recording head 17 while moving the carriage 16 in the main-scanning direction.
A cartridge holder 18 is provided on a left side in the drawing in the recording unit case 14. A plurality of ink cartridges 19 accommodating ink therein is mounted on the cartridge holder 18 in a detachable manner. The ink in the ink cartridges 19 thus mounted on the cartridge holder 18 is supplied to the recording head 17 after passing through an ink supply tube 20.
A maintenance device 30 that performs maintenance on an ink supply system including the recording head 17 is provided on a right side in the drawing in the recording unit case 14. A mounting portion 31 is provided on the maintenance device 30 and a waste liquid container 50 is mounted on the mounting portion 31 in a detachable state. The maintenance by the maintenance device 30 causes the ink discharged from the recording head 17 to be discharged to the waste liquid container 50.
As illustrated in
A discharge portion 33 and a substrate connecting portion 34 are provided on a side surface of the mounting recess portion 32, which is located on a first end portion thereof in the lengthwise direction. The discharge portion 33 has a cylindrical shape and discharges the waste liquid discharged from the recording head 17. The substrate connecting portion 34 is electrically coupled to a control device of the complex machine 10. The substrate connecting portion 34 has a projecting piece shape and is inserted into a recess portion 51 (see
A restricting portion 35 having a projecting shape is provided on a bottom surface of the mounting recess portion 32. The restricting portion 35 has a trapezoidal side view shape when seen from the direction intersecting with the mounting direction F1 of the waste liquid container 50. The upper surface of the restricting portion 35 is configured by a first surface 35A, a second surface 35B, and a third surface 35C arranged side by side in the mounting direction F1 of the waste liquid container 50 (see
Guide portions 36 having a recess shape are provided in side surfaces of the mounting recess portion 32. The guide portions 36 have a groove shape extending in the direction along the mounting direction F1 of the waste liquid container 50. When the waste liquid container 50 accommodated in the mounting recess portion 32 is moved in the mounting direction F1, guided portions 54 (see
A cover member 37 is mounted, in a rotationally movable manner, on an opening edge of the mounting recess portion 32, which is located on a second end portion thereof in the lengthwise direction. An engagement claw 38 is provided on a front end portion of the cover member 37, which is farther from a rotational movement center. When the cover member 37 rotationally moves to a position at which it makes contact with the waste liquid container 50 in a state in which the waste liquid container 50 is positioned on the mounting recess portion 32, the engagement claw 38 of the cover member 37 is engaged with an engagement portion 55 (see
Next, the configuration of the waste liquid container 50 will be described with reference to the drawings.
As illustrated in
A front wall portion 50a on the front side of the container member 50A in the mounting direction F1 is arranged to be close to the first end portion of the mounting recess portion 32 in the lengthwise direction when mounted on the mounting portion 31. An introduction port 56 corresponding to a waste liquid introduction portion into which the discharge portion 33 of the mounting portion 31 is inserted is provided in the front wall portion 50a of the container member 50A at a position close to a center thereof in the height direction. An annular projecting portion 57 projects on the periphery of the introduction port 56. When the waste liquid container 50 is mounted on the mounting portion 31, the discharge portion 33 provided on the mounting portion 31 is inserted into the introduction port 56 through an opening of the annular projecting portion 57.
A recess portion 58 opened to the front side and the lower side of the container member 50A is formed in a bottom wall portion 50b of the container member 50A. That is to say, the recess portion 58 is opened to the gravity direction and the mounting direction F1 of the container member 50A. The recess portion 58 extends to reach a position close to a center of the bottom wall portion 50b of the container member 50A from the front wall portion 50a of the container member 50A.
The recess portion 58 of the container member 50A accommodates therein the restricted portion 53 that is engaged with the restricting portion 35 provided on the bottom surface of the mounting recess portion 32 when the waste liquid container 50 is mounted on the mounting portion 31. The restricted portion 53 has a thin plate shape extending long in one direction. A first end portion of the restricted portion 53 in the lengthwise direction is not coupled to the recess portion 58, and a second end portion of the restricted portion 53 in the lengthwise direction is coupled to the recess portion 58. That is to say, the restricted portion 53 is supported by the recess portion 58 in a cantilever structure. In this case, the first end portion of the restricted portion 53 in the lengthwise direction does not project in the mounting direction F1 of the container member 50A from the front wall portion 50a of the container member 50A. The restricted portion 53 has a deformation portion 53a configured to be elastically deformable in the direction intersecting with the lengthwise direction of the restricted portion 53 and a contact portion 53b provided on the front end of the deformation portion 53a. The contact portion 53b indicates only a portion of a projecting portion toward the lower side of the container member 50A, which actually makes contact with the restricting portion 35 when the waste liquid container 50 is mounted on the mounting portion 31, the projecting portion being provided on the front end of the deformation portion 53a. The second end portion of the restricted portion 53 in the lengthwise direction is arranged on a detachment direction F2 side relative to the contact portion 53b. When the waste liquid container 50 is mounted on the mounting portion 31, the contact portion 53b is engaged with the first surface 35A of the restricting portion 35. With this engagement, the waste liquid container 50 is positioned on the mounting recess portion 32 in the direction along the mounting direction F1.
The guided portions 54 that are engaged with the guide portions 36 provided in the side surfaces of the mounting recess portion 32 when the waste liquid container 50 is mounted on the mounting portion 31 are provided on the side walls of the container member 50A. The guided portions 54 are configured by a plurality of projecting portions. Movement of the guided portions 54 in the mounting direction F1 of the waste liquid container 50 is guided by the guide portions 36. The guided portions 54 are arranged on the detachment direction F2 side of the waste liquid container 50 relative to the circuit substrate 52.
As illustrated in
As illustrated in the same drawing, in the container member 50A, the connecting terminal 52a of the circuit substrate 52 is arranged on the upper side relative to the restricted portion 53. In the container member 50A, the recess portion 51 accommodating therein the circuit substrate 52 and the recess portion 58 accommodating therein the restricted portion 53 are separated from each other without communicating with each other.
As illustrated in
The inside of the container member 50A is an accommodation portion 59 accommodating therein the waste ink discharged from the discharge portion 33. An absorbing member 60 for absorbing the waste ink is arranged in the accommodation portion 59. A surface of the bottom surface of the accommodation portion 59, which is close to the introduction port 56, is configured as a sloped surface with a downward gradient in the detachment direction F2 of the waste liquid container 50. In this case, the absorbing member 60 is arranged at a position on the detachment direction F2 side of the waste liquid container 50 relative to the bottom surface of the accommodation portion 59, which is configured as the sloped surface as described above. That is to say, a gap is interposed in the horizontal direction between the absorbing member 60 and the front wall portion 50a of the container member 50A. Therefore, even when a discharging speed of the waste ink to the accommodation portion 59 from the discharge portion 33 is higher than an absorbing speed of the waste ink by the absorbing member 60, overflow of the waste ink from the waste liquid container 50 is suppressed. The waste ink discharged to the accommodation portion 59 from the discharge portion 33 reaches the absorbing member 60 while flowing down the bottom surface of the accommodation portion 59 with gravity force. The absorbing member 60, therefore absorbs the waste ink smoothly.
Next, operations when the waste liquid container 50 in the embodiment is mounted on the mounting portion 31 will be described with reference to the drawings.
As illustrated in
Subsequently, as illustrated in
After that, as illustrated in
Next, the operations when the waste liquid container 50 in the embodiment is mounted on the mounting portion 31 will be described with reference to the drawings while particularly focusing on operations of the restricting portion 35 and the restricted portion 53.
As illustrated in
As illustrated in
Then, as illustrated in
Next, operations when the waste liquid container 50 in the embodiment is detached from the mounting portion 31 will be described with reference to the drawings while particularly focusing on operations of the restricting portion 35 and the restricted portion 53.
As illustrated in
As illustrated in
Then, as illustrated in
Next, actions of the waste liquid container 50 in the embodiment will be described.
The discharge portion 33 provided on the mounting portion 31 is inserted into the introduction port 56 of the waste liquid container 50 in the state in which the waste liquid container 50 is mounted on the mounting portion 31. Then, the waste ink discharged by the recording head 17 is discharged to the waste liquid container 50 after passing through the discharge portion 33. In this case, a part of the waste ink discharged to the waste liquid container 50 from the discharge portion 33 leaks from the introduction port 56 of the waste liquid container 50 in some cases.
In this point, in the embodiment, the center of the opening of the introduction port 56 and the contact portion 53b of the restricted portion 53 are arranged at the positions that do not overlap with each other in the vertical direction when seen from the side on which the introduction port 56 of the waste liquid container 50 is opened. With this arrangement, even if the waste ink leaked out from the introduction port 56 of the waste liquid container 50 flows down the front wall portion of the waste liquid container 50 to the lower side in the vertical direction with the gravity force as described above, adherence of the waste ink to the contact portion 53b of the restricted portion 53 is suppressed. Therefore, in the state in which the waste liquid container 50 is mounted on the mounting portion 31, influences on the attachment and detachment operations of the waste liquid container 50 by adherence of the contact portion 53b of the restricted portion 53 to the restricting portion 35 provided on the mounting recess portion 32 with the waste ink interposed therebetween due to the adherence of the waste ink to the contact portion 53b of the restricted portion 53 is avoided. Further, transfer, onto the waste liquid container 50 newly mounted on the mounting portion 31, of the waste ink that has adhered to the restricting portion 35 due to transfer of the waste ink onto the restricting portion 35 from the contact portion 53b of the restricted portion 53 may be avoided.
In the present embodiment, the connecting terminal 52a of the circuit substrate 52 is arranged above the restricted portion 53. Therefore, even if the waste ink leaked out from the introduction port 56 of the waste liquid container 50 adheres to the contact portion 53b of the restricted portion 53, reaching of the waste ink to the circuit substrate 52 from the contact portion 53b of the restricted portion 53 is suppressed. Occurrence of coupling failure between the connecting terminal 52a of the circuit substrate 52 and the substrate connecting portion 34 due to the adherence of the waste ink to the connecting terminal 52a of the circuit substrate 52 may be avoided.
The above-described embodiment can provide the following effects.
1. In the waste liquid container 50, the contact portion 53b of the restricted portion 53 is arranged at the position that does not overlap with the center of the opening of the introduction port 56 in the vertical direction when seen from the side on which the introduction port 56 is opened. With this configuration, after the waste ink leaked out from the introduction port 56 flows down to the lower side in the vertical direction with the gravity force, adherence of the waste ink to the contact portion 53b of the restricted portion 53 can be suppressed.
2. The restricted portion 53 has the deformation portion 53a having the end portion in the lengthwise direction, which is coupled to the contact portion 53b, and being configured to be elastically deformable in the direction intersecting with the lengthwise direction. With this configuration, the restricted portion 53 is engaged with the restricting portion 35, and attachment and detachment operations of the waste liquid container 50 to and from the mounting portion 31 can be smoothly performed.
3. The restricted portion 53 is accommodated in the recess portion 58 opened to the gravity direction and the mounting direction F1 of the waste liquid container 50. With this configuration, the adherence of the waste ink leaked out from the introduction port 56 to the contact portion 53b of the restricted portion 53 can be further suppressed.
4. The restricted portion 53 has the first end portion in the lengthwise direction, which is coupled to the contact portion 53b, and the second end portion in the lengthwise direction, which is coupled to the recess portion 58. With this configuration, reaching of the waste ink leaked out from the introduction port 56 to the contact portion 53b while flowing down the inner surface of the recess portion 58 can be suppressed.
5. The second end portion of the restricted portion 53 is arranged on the detachment direction F2 side relative to the contact portion 53b. With this configuration, the reaching of the waste ink leaked out from the introduction port 56 to the contact portion 53b while flowing down the inner surface of the recess portion 58 can be further suppressed.
6. The connecting terminal 52a of the circuit substrate 52 is arranged on the upper side relative to the restricted portion 53 in the state in which the waste liquid container 50 is mounted on the mounting portion 31. With this configuration, even if the waste ink leaked out from the introduction port 56 adheres to the contact portion 53b of the restricted portion 53, reaching of the waste ink to the connecting terminal 52a of the circuit substrate 52 from the contact portion 53b can be suppressed.
7. The connecting terminal 52a of the circuit substrate 52 is arranged so as to face toward the outer side in the width direction which is the direction intersecting with both of the gravity direction and the mounting direction F1. With this configuration, even if the waste ink leaked out from the introduction port 56 adheres to the contact portion 53b of the restricted portion 53, the reaching of the waste ink to the connecting terminal 52a of the circuit substrate 52 from the contact portion 53b can be further suppressed.
8. The waste liquid container 50 includes the guided portions 54 that are guided by the guide portions 36 provided in the mounting portion 31 when being mounted on the mounting portion 31. With this configuration, the mounting operation of the waste liquid container 50 on the mounting portion 31 can be smoothly performed.
9. The guided portions 54 are arranged on the detachment direction F2 side of the waste liquid container 50 relative to the circuit substrate 52. With this configuration, when the waste liquid container 50 is mounted on the mounting portion 31, the substrate connecting portion 34 provided on the mounting portion 31 and the connecting terminal 52a of the circuit substrate 52 can be connected to each other properly.
The above-described embodiment may be changed as in the following variations. Further, appropriate combinations of the above-described embodiment and the following variations may configure further variations, and appropriate combinations of the following variations may configure further variations.
In the above-described embodiment, the present disclosure may be applied to an apparatus of a type that an attachment and the waste liquid container 50 are coupled to each other with an ink flow path interposed therebetween while the attachment is mounted on the mounting portion 31 instead of the waste liquid container 50.
In the above-described embodiment, in the waste liquid container 50, the guided portions 54 may be arranged on the mounting direction F1 side relative to the circuit substrate 52.
In the above-described embodiment, the waste liquid container 50 may not include the guided portions 54 that are guided by the guide portions 36 provided in the mounting portion 31 when being mounted on the mounting portion 31.
In the above-described embodiment, the connecting terminal 52a of the circuit substrate 52 may be arranged so as to face toward the lower side in the vertical direction or may be arranged so as to face toward the upper side in the vertical direction.
In the above-described embodiment, the circuit substrate 52 may be arranged at the lower side relative to other sites of the restricted portion 53 than the contact portion 53b as long as the connecting terminal 52a thereof is arranged at the upper side relative to the contact portion 53b of the restricted portion 53 in the state in which the waste liquid container 50 is mounted on the mounting portion 31.
In the above-described embodiment, the connecting terminal 52a of the circuit substrate 52 may be arranged at the same height as the restricted portion 53 or may be arranged at the lower side relative to the restricted portion 53 in the state in which the waste liquid container 50 is mounted on the mounting portion 31.
In the above-described embodiment, the second end portion of the restricted portion 53 in the lengthwise direction may be coupled to the recess portion 58 at a position on the mounting direction F1 side relative to the contact portion 53b.
In the above-described embodiment, the second end portion of the restricted portion 53 in the lengthwise direction may be coupled to a site differing from the recess portion 58, such as on the bottom wall portion 50b of the waste liquid container 50, for example.
In the above-described embodiment, a part of the restricted portion 53 may project from the recess portion 58. For example, the contact portion 53b coupled to the first end portion of the restricted portion 53 in the lengthwise direction may project relative to the front wall portion 50a of the waste liquid container 50 through the front opening of the recess portion 58.
In the above-described embodiment, the restricted portion 53 may not include the deformation portion 53a that is deformed in the direction intersecting with the lengthwise direction.
In the above-described embodiment, in the waste liquid container 50, other sites of the restricted portion 53 than the contact portion 53b may be arranged so as to overlap with the center of the opening of the introduction port 56 in the vertical direction as long as the contact portion 53b of the restricted portion 53 is arranged so as not to overlap with the center of the opening of the introduction port 56 in the vertical direction when seen from the side on which the introduction port 56 is opened.
In the above-described embodiment, in the waste liquid container 50, the container member 50A and the restricted portion 53 may be configured by separate members.
In the above-described embodiment, the liquid ejecting apparatus may include a liquid ejecting head ejecting liquid other than the ink, for example, a liquid material formed by dispersing or mixing particles of a functioning material in the liquid. For example, the liquid ejecting head may eject a liquid material in a form of a solution or a dispersion of a material such as an electrode material or a coloring material (pixel material) to be used for manufacturing a liquid crystal display, an electro luminescence (EL) display, a field emission display, and so on.
In the above-described embodiment, the waste liquid container 50 may accommodate therein liquefied waste liquid by collecting mist which has scattered with liquid ejection or the like, or may accommodate not only liquid to be used for ejection onto a target but also various types of functioning liquid such as washing liquid used for washing the liquid ejecting head or the like.
In the above-described embodiment, the apparatus on which the waste liquid container 50 is mounted may be any apparatus other than the liquid ejecting apparatus as long as the apparatus causes the used liquid to be discharged through the discharge portion 33. Examples of such apparatuses include a washing apparatus that washes a target with liquid such as water and an inspection apparatus that performs inspection and the like using inspection liquid.
Hereinafter, technical spirits that are grasped from the above-described embodiment and variations will be described together with effects.
First Aspect
A waste liquid container that is mounted on a mounting portion having a discharge portion for discharging waste liquid and a restricting portion provided under the discharge portion in a detachable manner with movement in a mounting direction intersecting with a gravity direction includes a waste liquid introduction portion being coupled to the discharge portion when the waste liquid container is mounted on the mounting portion, an accommodation portion accommodating the waste liquid discharged from the discharge portion, and a restricted portion having a contact portion configured to make contact with the restricting portion and restricting movement of the waste liquid container in a detachment direction opposite to the mounting direction by contact between the contact portion and the restricting portion in a state in which the waste liquid container is mounted on the mounting portion, wherein the contact portion is arranged at a position which does not overlap with a center of an opening of the waste liquid introduction portion in a vertical direction when seen from a side on which the waste liquid introduction portion is opened.
With this configuration, after the waste liquid leaked out from the waste liquid introduction portion flows down to the lower side in the vertical direction with the gravity force, adherence of the waste liquid to the contact portion of the restricted portion can be suppressed.
Second Aspect
In the waste liquid container according to the first aspect, the restricted portion may have a deformation portion having an end portion in the lengthwise direction, which is coupled to the contact portion, and being configured to be elastically deformable in a direction intersecting with the lengthwise direction.
With this configuration, attachment and detachment operations of the waste liquid container to and from the mounting portion can be smoothly performed in the configuration in which the restricted portion is engaged with the restricting portion.
Third Aspect
In the waste liquid container according to the first or second aspect, the restricted portion may be accommodated in a recess portion opened to a gravity direction and the mounting direction.
With this configuration, the adherence of the waste liquid leaked out from the waste liquid introduction portion to the contact portion of the restricted portion can be further suppressed.
Fourth Aspect
In the waste liquid container according to the third aspect, the restricted portion may have a first end portion in the lengthwise direction, which is coupled to the contact portion, and a second end portion in the lengthwise direction, which is coupled to the recess portion.
With this configuration, reaching of the waste liquid leaked out from the waste liquid introduction portion to the contact portion while flowing down the inner surface of the recess portion can be suppressed.
Fifth Aspect
In the waste liquid container according to the fourth aspect, the second end portion of the restricted portion may be arranged on the detachment direction side relative to the contact portion.
With this configuration, the reaching of the waste liquid leaked out from the waste liquid introduction portion to the contact portion while flowing down the inner surface of the recess portion can be further suppressed.
Sixth Aspect
The waste liquid container according to any one of the first to fifth aspects may further include a circuit substrate having a connecting terminal that is electrically connected to a substrate connecting portion provided on the mounting portion in mounting on the mounting portion, wherein the connecting terminal of the circuit substrate is arranged on an upper side relative to the restricted portion in a state in which the waste liquid container is mounted on the mounting portion.
With this configuration, even if the waste liquid leaked out from the waste liquid introduction portion adheres to the contact portion of the restricted portion, the reaching of the waste liquid to the connecting terminal of the circuit substrate from the contact portion can be suppressed.
Seventh Aspect
In the waste liquid container according to the sixth aspect, the connecting terminal of the circuit substrate may be arranged so as to face toward an outer side in a width direction which is a direction intersecting with both of a gravity direction and the mounting direction.
With this configuration, even if the waste liquid leaked out from the waste liquid introduction portion adheres to the contact portion of the restricted portion, the reaching of the waste liquid to the connecting terminal of the circuit substrate from the contact portion can be further suppressed.
Eighth Aspect
The waste liquid container according to any one of the first to seventh aspects may further include a guided portion that is guided by a guide portion provided in the mounting portion when the waste liquid container is mounted on the mounting portion.
With this configuration, a mounting operation of the waste liquid container on the mounting portion can be smoothly performed.
Ninth Aspect
In the waste liquid container according to the eighth aspect, the guided portion may be arranged on the detachment direction side relative to a circuit substrate.
With this configuration, when the waste liquid container is mounted on the mounting portion, the coupling portion provided on the mounting portion and the connecting terminal of the circuit substrate can be connected to each other properly.
Tenth Aspect
An attachment that is mounted on a mounting portion having a discharge portion for discharging waste liquid and a restricting portion provided under the discharge portion in a detachable manner with movement in a mounting direction intersecting with a gravity direction includes a waste liquid introduction portion being coupled to the discharge portion when the attachment is mounted on the mounting portion, an accommodation portion accommodating the waste liquid discharged from the discharge portion through the waste liquid introduction portion, and a restricted portion having a contact portion configured to make contact with the restricting portion and restricting movement of the attachment in a detachment direction opposite to the mounting direction by contact between the contact portion and the restricting portion in a state in which the attachment is mounted on the mounting portion, wherein the contact portion is arranged at a position which does not overlap with a center of an opening of the waste liquid introduction portion in a vertical direction when seen from a side on which the waste liquid introduction portion is opened.
With this configuration, after the waste liquid leaked out from the waste liquid introduction portion flows down to the lower side in the vertical direction with the gravity force, adherence of the waste liquid to the contact portion of the restricted portion can be suppressed.
| Number | Date | Country | Kind |
|---|---|---|---|
| JP2018-173330 | Sep 2018 | JP | national |
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| Number | Date | Country | |
|---|---|---|---|
| 20200086649 A1 | Mar 2020 | US |
